CN106671414A - Photocuring rapid molding method using lantern slide playing function - Google Patents

Abstract

The invention discloses a photocuring rapid molding method using a lantern slide playing function. Printing sectional views can be conveniently and rapidly shown. The photocuring rapid molding method comprises the following steps that a three-dimensional model is cut into face models according to the molding accuracy; section information patterns are led into lantern slides; printed two-dimension cut cross patterns are checked before printing, and the playing time of the lantern slides is set; and the platform accuracy, the lantern slide exposure time and gradual exposure curing are set. After curing molding is completed, an organic solvent is used for flushing away parts which are not cured, and molded pieces are taken down from a support plate. The photocuring rapid molding method is simple in principle, convenient to comprehend and suitable for use by low-age students.

Description

A kind of method of the photocureable rapid shaping of utilization lantern slide playing function

Technical field

The present invention relates to a kind of light-curing quick moulding method of utilization ppt demo functions.

Background technology

3D printing is new rapid prototyping ＆ manufacturing technology (RP).It with the rapid shaping technique of accumulation method implementation model, It is an important breakthrough of manufacturing technology field.It can overcome the traditional mechanical special construction obstacle that cannot realize of processing, can be with Realize the simplification production of arbitrarily complicated structure member, can automatically, directly, accurately just design philosophy is from CAD model, turn Turn to the model with certain function or device.Existing 3D printing technique is divided into thermoplastic cement basic technology (FDM), and laser burns Knot forming technique (SLS), the regions curing forming technique of photocurable liquid Choice of Resin (SLA).Since 2013, rapid shaping Technology is developed and has been expanded rapidly market application, wherein education market accounting 1/3rd or so.But at present towards The 3D printing equipment in education of middle and primary schools market is mainly desktop level FDM machine, but its algorithm is complicated, is unfavorable for middle and primary schools' physiology Solution.

The content of the invention

For above content, it is necessary to a kind of simply and intuitively quick forming fabri-cation method is proposed, towards education of middle and primary schools Using.

The present invention can be realized based on the photocureable rapid shaping of slide presentation function, do not needed in the engineering for printing PC ends sequential Communication Control is printed, and the lantern slide cross section information after section imports the projector in 3D printer by computer. Threedimensional model is discrete for two-dimension picture, lantern slide is fabricated to, demonstration exposure is carried out one by one, reduce rapid shaping technique Require, forming process Simple visual is readily appreciated.

A kind of method of the photocureable rapid shaping of utilization lantern slide playing function, using following device, the device includes Computer, projector, profiled member supporting plate Z axis kinetic control system, the photosensitive resin being mounted in resin reservoir；

Characterized in that, comprising the steps：

(1) in a computer with the threedimensional model of 3D modeling software foundation manufacture；

(2) it is surface model by threedimensional model section, is converted into picture, imports lantern slide；Lantern slide is set to expose section Hum pattern is arranged alternately with black Background；

(3) projector light source and setting section precision are selected；Precision controlling is in 0.02mm to 0.05mm；

(4) luminance signal is detected using light sensitive diode, realizes that exposure process is detected using photosensitive switch, realize that Z axis are transported It is dynamic synchronous with exposure process, without the need for communicating with PC ends sequential；

(5) the lantern slide cross section information after section is imported the projector in 3D printer by computer, successively to tree Fat is solidified；When having image exposure, photoswitch detects signal；When black figure is shown, blackout realizes height electricity Flat output, low and high level is exported for the motion of Single-chip Controlling Z axis；Every layer of hardening time is 2s~20s；Black Background is set It is during printing, to reserve Z axis motion and moulding stress release time to be, the time is 3~10s；

(6) fall uncured portion with solvent washing, profiled member is removed from supporting plate, complete mold curing manufacture.

Described 3D modeling software can be：3D MAX, Pro/E, solidworks, AUTO CAD etc.

Described surface model is referred to and for threedimensional model to be separated into the two-dimensional section data message that each face is obtained.

Described picture refer to it is discrete after cross section information save as the common picture format of JPG, BMP.

Described solidified resin type refers to the photosensitive resins different to photosensitive peak value.

Described projector refers to the projector through light source repacking, and light source is selected and selects resin wavelength photoreceptor phase Match somebody with somebody.

Described section precision refers to the layer precision with reference to threedimensional model size and system of processing to determine threedimensional model How many faces are separated into, precision is higher, discrete face is more, picture number is more.

Described processing platform refers to a platform that accurate movement can be carried out in vertical direction, in vertical direction (Z Axle) mobile profiled member supporting plate.

Described hardening time is determined by resin material and required solidification intensity.

Described solvent should be easy to get, nontoxic organic solvent, when resin viscosity is relatively low, using water rinse.

The present invention operation principle be：General photosensitive resin is made up of polymer monomer with performed polymer, also added with light-initiated , there is polyreaction in agent, complete solidification under the light irradiation of corresponding wavelength.Using with required solidified resin peak value wavelength photoreceptor phase Corresponding projection light source, connection computer or other display equipment (such as mobile phone), carry out slide demonstration exposure.Exposure image is carried on the back Scape should be black, and cross section information is white, and such picture white portion has light to project, and resin solidification, black portions do not have light According to resin is still liquid.Profiled member supporting plate is moved by photoswitch and Single-chip Controlling Z axis motor system, realization successively exposes Photocuring.After successively whole exposure curings are complete for the surface model that threedimensional model is cut into slices, with solvent uncured portion Rinse out, then the physical treatment of whole threedimensional model is completed.

It is characteristic of the invention that：

1. compared with traditional photocureable rapid shaping mode, the present invention does not operationally need PC ends control program, when During using the projector with Bluetooth function, can be connected with mobile phone, carry out lantern slide broadcasting, it is easy to use.

2. the slide demonstration mode that the present invention is adopted, can in advance observe before printing the layered effect of printout, more Plus the succinct process for presenting printing.

3., using the exposure curing molding based on slide presentation function, forming process is directly perceived, readily appreciates, fits for the present invention Grasp 3D printing principle and application are further understood for low age student.

4. in the present invention, realize that exposure process is detected using photosensitive switch, light sensitive diode detection luminance signal, the detection Signal can make printing precision more accurate, and precision can be controlled between 0.02mm to 0.05mm, it is ensured that success during printing Rate.

5. the present invention realizes that Z axis motion is synchronous with exposure process：Lantern slide is set to expose cross section information figure with the black back of the body Scape figure replaces, and when having image exposure, photoswitch detects signal；When black figure is shown, blackout realizes low and high level Output, the motion of Single-chip Controlling Z axis.

6. in the present invention, resin liquid storage trench bottom is upper to apply poly- not imperial thin film using the transparent acrylic base plate for scribbling silica gel. The resin trough floor of other molding modes is different from, silica gel only acts to buffer Bottom Pressure during molding in the present invention, Poly- not imperial thin film is easy to cured layer and separates with base plate.From without using the high price silica gel with the low absorption affinity of solidification part, reducing into This.

7. in the present invention, ultraviolet source can flexibly be chosen according to resin material, can be real from 300nm~405nm wavelength Existing, shorter from wavelength, projector service life is lower.

Description of the drawings

Rapid shaping schematic diagram during Fig. 1 is of the invention

In figure：1, profiled member supporting plate, 2, photosensitive resin, 3, resin reservoir, 4, scribble silica gel and be covered with poly- not imperial thin film High printing opacity acrylic board, 5, light sensitive diode probe, 6, projection light shine, 7, change light source projector.

Fig. 2 examples 1 adopt threedimensional model

The entity that Fig. 3 examples 1 are printed

Model cross section information figure (square body Model) when Fig. 4 lantern slides are played, design lower left circle exposure is in order to just In light sensitive diode detection

Black Background when Fig. 5 lantern slides are played, whole lantern slide is that model cross section information figure and black Background replace

Specific embodiment

Be necessary first it is pointed out here that be that the present embodiment is served only for being further described the present invention, it is impossible to be interpreted as Limiting the scope of the invention.

Example 1

The present invention realizes resin solidification rapid shaping using slide demonstration Exposure mode；Projector light source emission wavelength is 405nm；Moved using step motor control Z axis；From the photosensitive resin that peak value wavelength photoreceptor is 405nm as material to be solidified Material；From human teeth's model.

This example is carried out by the following method：Resin reservoir is cleaned up, rear addition resin to be dried is placed in processing flat On platform；Tooth model is scanned using oral cavity spatial digitizer, stl forms are saved as；File is imported into professional software section discrete Into surface model, section precision is adjusted to 200 μm or so, and it is jpg forms to preserve each surface model image；These image files are imported Lantern slide, picture replaces with ater background；Adjustment photosensitive probe position, setting slide switching time is 5s, Z axis kinetic system System rises 200 μm after exposing every time (for the higher resin of viscosity, Z axis motor system should lift after each exposure higher Highly, it is where 200 μm that difference in height is then dropped to when exposing with last time again), carry out successively exposure curing；Completion of cure Afterwards, profiled member supporting plate is taken out, with solvent washing uncured portion is fallen, profiled member is removed from supporting plate and be obtained threedimensional model Profiled member.

Claims (1)

1. a kind of method of the photocureable rapid shaping of utilization lantern slide playing function, using following device, the device includes meter Calculation machine, projector, profiled member supporting plate Z axis kinetic control system, the photosensitive resin being mounted in resin reservoir；

Characterized in that, comprising the steps：

(1) in a computer with the threedimensional model of 3D modeling software foundation manufacture；

(2) it is surface model by threedimensional model section, is converted into picture, imports lantern slide；Lantern slide is set to expose cross section information Figure is arranged alternately with black Background；

(3) projector light source and setting section precision are selected；Precision controlling is in 0.02mm to 0.05mm；

(4) using light sensitive diode detect luminance signal, using photosensitive switch realize exposure process detect, realize Z axis motion with Exposure process synchronization；

(5) the lantern slide cross section information after section is imported the projector in 3D printer by computer, successively resin is entered Row solidification；When having image exposure, photoswitch detects signal；When black figure is shown, blackout realizes that low and high level is defeated Go out, low and high level is exported for the motion of Single-chip Controlling Z axis；Every layer of hardening time is 2s~20s；Arranging black Background is It is during printing, to reserve Z axis motion and moulding stress release time, the time is 3~10s；

(6) fall uncured portion with solvent washing, profiled member is removed from supporting plate, complete mold curing manufacture.