阅读说明：本技术 一种上液面光固化三维成形装置及方法 (A kind of upper liquid level photocuring three-dimensional device and method ) 是由 俞红祥 王康恒 于 2019-09-20 设计创作，主要内容包括：本发明涉及一种上液面光固化三维成形装置及方法,包括刚性框架,刚性框架上设有Z向直线模组、悬臂支架,刚性框架上设有溢流槽,溢流槽内设有成型槽,成型槽侧面上部设有溢流口,成型槽侧面底部设有与增压泵连接的连通口,增压泵入口设于溢流槽底部,溢流槽、成型槽内有光敏树脂；Z向直线模组与成形基板连接,成形基板上设有光固化三维成形体,Z向直线模组可驱动成形基板、光固化三维成形体在成型槽内竖直移动并定位；悬臂支架末端设有成像元件,成像元件可将光学图形投射至成型槽内光敏树脂的上液面。本发明结构简单、方案合理、光敏树脂上液面液位控制精度高,易于在大尺寸、高精度光固化三维成形设备中推广应用。(The present invention relates to a kind of upper liquid level photocuring three-dimensional device and methods, including rigid frame, rigid frame is equipped with Z-direction straight line mould group, pole bracket, rigid frame is equipped with overflow launder, forming tank is equipped in overflow launder, forming tank side surface upper part is equipped with overflow port, and forming tank side bottom is equipped with the communication port connecting with booster pump, it is pressurized pump intake and is set to isopipe root, have photosensitive resin in overflow launder, forming tank；Z-direction straight line mould group is connect with forming board, and forming board is equipped with photocuring three-dimensional body that formed, and Z-direction straight line mould group can drive forming board, photocuring three-dimensional body that formed vertical shift and to position in forming tank；Pole bracket end is equipped with image-forming component, and optical figuring can be projected to the upper liquid level of photosensitive resin in forming tank by image-forming component.Rationally, on photosensitive resin liquid level Liquid level precision is high for the configuration of the present invention is simple, scheme, is easy to promote and apply in large scale, high-precision photocuring three-dimensional equipment.)

1. a kind of upper liquid level photocuring three-dimensional device, including rigid frame (1), rigid frame (1) is equipped with Z-direction straight line mould Group (8), pole bracket (11) are equipped with forming tank it is characterized in that: rigid frame (1) is equipped with overflow launder (2) in overflow launder (2) (3), forming tank (3) side surface upper part is equipped with overflow port (6), and forming tank (3) side bottom is equipped with the connection connecting with booster pump (5) Mouth (7), booster pump (5) entrance are set to overflow launder (2) bottom, have photosensitive resin (4) in overflow launder (2), forming tank (3)；Z-direction is straight Line mould group (8) is connect with forming board (9), and forming board (9) is equipped with photocuring three-dimensional body that formed (10), Z-direction straight line mould group (8) forming board (9), photocuring three-dimensional body that formed (10) can be driven in the interior vertical shift of forming tank (3) and positioned；Pole bracket (11) end is equipped with image-forming component (12), and optical figuring can be projected to forming tank (3) interior photosensitive resin by image-forming component (12) Upper liquid level.

2. upper liquid level photocuring three-dimensional device according to claim 1, it is characterized in that: photocuring controller (20) point It is not connect with booster pump (5), Z-direction straight line mould group (8), image-forming component (12).

3. the upper liquid level photocuring three-dimensional method of device according to claim 1, it is characterized in that: Z-direction straight line mould group (8) It drives forming board (9), and height corresponding to cured object (13) the decline monolayer immobilization thickness being attached on forming board (9) Degree, photosensitive resin (4) in grooving (3) the table levelling again on cured body (13), forms with a thickness of monolayer immobilization thickness New upper liquid level liquid layer (14), optical figuring is projected to newly upper liquid level liquid layer (14), caused by optical picture by image-forming component (12) Photocuring reaction occurs for shape irradiation area, and then generates current layer identical with image-forming component (12) institute's projection optics graphics shape Solidfied material (15), and then current layer solidfied material (15) close adhesion carries out next layer in cured object (13) upper surface again Photocuring.

Technical field

The present invention relates to 3 D-printing field, especially a kind of upper liquid level photocuring three-dimensional device and method.

Background technique

Photocuring three-dimensional irradiates photosensitive resin material, solidification reaction by specific wavelength light source to be consolidated Compound, the significant advantage fast with shaping speed, forming surface is smooth, has developed into the important class in increases material manufacturing technology field One of.The implementation of photocuring three-dimensional is based primarily upon the basic principle of layer-by-layer exposure curing, multilayer accumulation forming, i.e., logical The image-forming components such as liquid crystal display (LCD), Digital Light Processor (DLP), scanning galvanometer (Galvanic Scan Head) are crossed, are controlled The exposure area of photosensitive resin thin layer processed is successively exposed with obtaining sheet, graphical curing reaction object by continuous, and The effect of ply adhesion caused by light interlayer penetrates when single layer exposes obtains photocuring made of being accumulated as multilayer chip solidfied material Three-dimensional body that formed.

According to layer-by-layer exposure object, that is, photosensitive resin coating position difference, photocuring three-dimensional equipment can be divided into upper liquid Face solidification solidifies two types with lower liquid level, wherein upper liquid level photocuring refers to the direct projection optics pattern of image-forming component to liquid bath Photosensitive resin on liquid level then will be under gained sheet solidfied material to upper liquid level thin layer exposure curing to obtain sheet solidfied material It sinks in photosensitive resin, in a manner of the new upper liquid level thin layer exposure curing for continuing to form levelling on sheet solidfied material；Under Liquid level photocuring refers to that the optical design of image-forming component projection passes through liquid bath clear bottom, to lower liquid level thin layer exposure curing to obtain Sheet solidfied material then removes gained sheet solidfied material from liquid bath clear bottom, is filled out with continuing to flow sheet solidfied material following table Fill the mode for the new lower liquid level thin layer exposure curing to be formed.

Existing upper liquid level uv equipment is mainly used for large scale, low precision photocuring application, this is mostly derived from upper liquid The inherent characteristic in face: upper liquid level solidfied material is not necessarily to from other sur-face peelings, good to the adaptability of large scale section solidified forming, but The achievable precision of upper liquid level Liquid level is low, causes optical design projection multiplying power offset, causes to solidify dimensional discrepancy；And lower liquid Face uv equipment then biases toward small size, and high precision part application, this is also derived from the inherent characteristic of lower liquid level: lower liquid level liquid Position is constant, and optical design projection multiplying power is constant, and solidification size is accurate, but solidifies after the solidification of lower liquid level with liquid bath clear bottom adhesion The difficulty and damage that object is removed from liquid bath clear bottom increase with solidification section and increased dramatically, so that the type equipment is not used to Large-size components forming.Currently, being directed to large scale, high-precision photocuring three-dimensional demand, also lack a kind of optical design throwing It penetrates multiplying power stabilization, big section solidfied material and damages the small photocuring three-dimensional method even without removing from imaging interfaces removing.

Summary of the invention

The shortcomings that the invention solves the above-mentioned prior arts provides a kind of detect without exact filling level, without accurate quantification The high upper liquid level photocuring three-dimensional device and method of fluid infusion, level stability degree.

The technical scheme adopted by the invention to solve the technical problem: this upper liquid level photocuring three-dimensional device, including Rigid frame, rigid frame are equipped with Z-direction straight line mould group, pole bracket, and rigid frame is equipped with overflow launder, is equipped in overflow launder Forming tank, forming tank side surface upper part are equipped with overflow port, and forming tank side bottom is equipped with the communication port connecting with booster pump, booster pump Entrance is set to isopipe root, has photosensitive resin in overflow launder, forming tank；Z-direction straight line mould group is connect with forming board, shapes base Plate is equipped with photocuring three-dimensional body that formed, and Z-direction straight line mould group can drive forming board, photocuring three-dimensional body that formed in forming tank Vertical shift simultaneously positions；Pole bracket end is equipped with image-forming component, and optical figuring can be projected to light in forming tank by image-forming component The upper liquid level of quick resin.

Preferably, photocuring controller is connect with booster pump, Z-direction straight line mould group, image-forming component respectively.

A kind of upper liquid level photocuring three-dimensional method, Z-direction linear module drive forming board, and it is attached to forming base The corresponding height of cured object decline monolayer immobilization thickness on plate, table is again on cured body for photosensitive resin in grooving Levelling, forms the new upper liquid level liquid layer with a thickness of monolayer immobilization thickness, and optical figuring is projected to newly upper liquid level liquid by image-forming component Layer leads to that photocuring reaction is occurred by optical figuring irradiation area, and then generates and image-forming component institute projection optics graphics shape Identical current layer solidfied material, and then current layer solidfied material close adhesion carries out next layer in cured object upper surface again Photocuring.

More specifically:

Before starting photocuring, photocuring controller issues out code to image-forming component, to close the optics of image-forming component Figure projection；Enough photosensitive resins first is injected to grooving, until the photosensitive resin in grooving is from overflow port spill-over, Xiang Yiliu The appropriate photosensitive resin of injection in slot, it is ensured that the photosensitive resin in overflow launder floods pressurization pump intake, and the photosensitive tree in overflow launder Volume contraction caused by photosensitive resin solidifies in the entire Light Curing of rouge adequate remedy, grooving；Photocuring controller issues Enabled instruction controls booster pump for the photosensitive resin in overflow launder and is slowly injected into grooving, the photosensitive tree of grooving to booster pump Rouge is slowly spilled over to overflow launder, to establish slow, stable photosensitive resin circulation between grooving and overflow launder；Photocuring control Device processed issues displacement commands to Z-direction straight line mould group, controls Z-direction linear module drive forming board and gently declines, until submerging into Liquid level monolayer immobilization thickness on shape slot photosensitive resin.

When carrying out first floor photocuring, photocuring controller maintains booster pump enabled instruction, it is ensured that the photosensitive tree in grooving Rouge is slowly spilled over to overflow launder；Photocuring controller delay, to wait forming board to decline the photosensitive tree of caused grooving Liquid surface fluctuation calms down naturally on rouge；Photocuring controller issues the first floor and solidifies graph data to image-forming component, controls image-forming component First floor optical figuring is projected to liquid level on grooving photosensitive resin, photocuring controller maintain the projection of first floor optical figuring and Image-forming component is closed after end exposure, on forming board on the photosensitive resin of monolayer immobilization thickness liquid levels layer by first floor optical figuring It irradiates, be cured reaction, generate the first floor sheet solidfied material of respective shapes, and first floor sheet solidfied material is attached to forming board On, first floor photocuring terminates.

When carrying out succeeding layer photocuring, photocuring controller first issues displacement commands to Z-direction straight line mould group, and it is straight to control Z-direction Line mould group drives the corresponding height of forming board decline monolayer immobilization thickness；Photocuring controller delay, waits base to be formed Plate declines liquid surface fluctuation on caused grooving photosensitive resin and calms down naturally, and waiting time, photocuring controller maintains booster pump It works, liquid level liquid level is determined by grooving overflow open height on the grooving after calming down naturally；Photocuring controller issues Current layer solidifies graph data to image-forming component, controls image-forming component for current layer optical figuring and is projected to grooving photosensitive resin Upper liquid level, photocuring controller maintain current layer optical figuring to project and close image-forming component after end exposure, and upper one layer solid Liquid levels layer on the photosensitive resin of monolayer immobilization thickness in compound by the irradiation of current layer optical figuring, is cured reaction, generates The current lamellar solidfied material of respective shapes, and current lamellar solidfied material is attached to one layer of solidfied material surface, current layer light Solidification terminates；The above process is successively implemented, and liquid level thin layer solidifies the sheet solidfied material generated and successively tires out on grooving photosensitive resin Add, until constituting complete photocuring three-dimensional body that formed.

Liquid surface level is determined by grooving overflow open height on the photosensitive resin of grooving of the present invention, and booster pump is by overflow launder In photosensitive resin pressurization, continue injection molding slot so that grooving photosensitive resin is constantly from overflow port spill-over, and then shaping It is generated in slot and liquid surface level on the consistent photosensitive resin of overflow open height；The photosensitive resin of grooving of the present invention is full from overflow port After overflowing, overflow launder is directly flowed back to, and the photosensitive resin in overflow launder continues to inject grooving by booster pump, thus in grooving Photosensitive resin flow circuit is constituted between overflow launder；The flow of booster pump of the present invention is low, and booster pump is from communication port injection molding slot Photosensitive resin, bottom-up slow liquid stream is constituted in grooving, grooving photosensitive resin is can avoid and stands cause for a long time Component layering, sedimentation problem；The present invention not only may be used using the method for liquid surface level on overflow port control grooving photosensitive resin To solve the problems, such as that volume caused by photosensitive resin cure shrinkage reduces in grooving, liquid level reduces, forming board can also compensate for It constantly submerges the submerged member volume that grooving is caused and increases effect.

Upper liquid level photocuring three-dimensional method of the invention, the Liquid level of liquid level is not necessarily on grooving photosensitive resin High-accuracy liquid level sensor is only recycled by the photosensitive resin liquid that booster pump drives without high precision volume compensation mechanism It can be realized with overflow mechanism；Upper liquid level photocuring three-dimensional method of the invention, liquid level liquid on grooving photosensitive resin Position is stablized, and image-forming component is also stable to the optical figuring projection multiplying power of upper liquid level, photocuring dimensional accuracy is high；Structure of the invention letter Rationally, on photosensitive resin liquid level Liquid level precision is high for single, scheme, is easy to set in large scale, high-precision photocuring three-dimensional Standby middle popularization and application.

Detailed description of the invention

Fig. 1 is general structure schematic diagram of the invention；

Fig. 2 is photosensitive resin circulating circuit figure of the invention；

Fig. 3 is upper liquid level single layer photocuring schematic diagram of the invention；

Fig. 4 is control signal connection figure of the invention；

Description of symbols: rigid frame 1, overflow launder 2, forming tank 3, photosensitive resin 4, booster pump 5, entrance 501, outlet 502, overflow port 6, communication port 7, Z-direction straight line mould group 8, forming board 9, photocuring three-dimensional body that formed 10, pole bracket 11, imaging Element 12, cured object 13, new upper liquid level liquid layer 14, current layer solidfied material 15, photocuring controller 20.

Specific embodiment

The present invention will be further explained below with reference to the attached drawings: