CN221292312U

CN221292312U - Three-dimensional forming equipment

Info

Publication number: CN221292312U
Application number: CN202323049115.3U
Authority: CN
Inventors: 韦华忠; 请求不公布姓名
Original assignee: Shenzhen Anycubic Technology Co Ltd
Current assignee: Shenzhen Anycubic Technology Co Ltd
Priority date: 2023-11-10
Filing date: 2023-11-10
Publication date: 2024-07-09
Anticipated expiration: 2033-11-10

Abstract

The utility model discloses a three-dimensional forming device, wherein pigment is sprayed on a structural member through a coloring mechanism, and a first curing member cures the pigment and a medium layer together, so that one-step forming of a color model is realized, and the color has flexibility. The main technical scheme of the utility model is as follows: a stereolithography apparatus, comprising: a structural member; the feeding and discharging mechanism is opposite to the construction member and is used for adding media to the construction member or discharging the media on the construction member; the printing platform is opposite to the construction member; the lifting mechanism is connected with the printing platform and used for driving the printing platform to move close to or away from the structural member; the painting mechanism is used for spraying pigment on the construction piece; the first curing member is at least for curing the pigment and the medium to form a current print layer on the print platform. The utility model is mainly used for color printing.

Description

Three-dimensional forming equipment

Technical Field

The utility model relates to the technical field of three-dimensional forming, in particular to three-dimensional forming equipment.

Background

The photocuring 3D printing technology is characterized in that a controller controls a light source to selectively irradiate photosensitive media contained in a trough, so that the photosensitive media are solidified on a printing platform, the printing platform is controlled to move in the Z-axis direction, the media are refluxed below a molded model, then the next irradiation and solidification are carried out, and the photosensitive media are stacked layer by layer, so that three-dimensional molding is realized.

The color of the printing model is determined by the color of the photosensitive medium in the trough, and the color of the model can be changed by containing the photosensitive medium with different colors in the trough, but the color can be changed in a layering manner only in the printing height direction. In the prior art, a printing model is colored by spraying, for example, in a patent with publication number CN106238256B, an automatic inkjet coloring system is disclosed, which comprises a rotatable workbench and a piezoelectric inkjet unit capable of moving up and down, and the printing model is sprayed with color by the piezoelectric inkjet unit. The additional coloring mode increases the step of printing the finished product, and an additional device is required to be arranged for coloring, so that excessive space is occupied.

Disclosure of utility model

In view of the above, the embodiment of the utility model provides a stereoscopic molding device, which is mainly used for solving the problem that a color model cannot be directly printed.

In order to achieve the above purpose, the present utility model mainly provides the following technical solutions:

the utility model provides a three-dimensional forming device, comprising:

A structural member;

The feeding and discharging mechanism is opposite to the structural member and is used for adding media to the structural member or discharging the media on the structural member;

the printing platform is opposite to the construction piece;

The lifting mechanism is connected with the printing platform and used for driving the printing platform to move close to or away from the structural member;

The painting mechanism is used for spraying pigment on the structural member;

And the first curing part is at least used for curing the pigment and the medium so as to form a current printing layer on the printing platform.

According to the three-dimensional forming equipment provided by the embodiment of the utility model, the pigment is sprayed on the structural member through the pigment coating mechanism, and the pigment and the medium layer are solidified together by the first solidifying member, so that the current printing layer has the color, the color model is formed at one time by sequentially printing layer by layer, and the color has flexibility. In the prior art, the color of the printing model is determined by the color of the photosensitive medium in the trough, the photosensitive medium with different colors is contained in the trough, the color can be changed in a layered manner in the printing height direction, the step of printing a finished product is increased in a coloring mode of the printing model, and an additional device is required to be arranged for coloring, so that excessive space is occupied. Compared with the prior art, in the utility model, the pigment is sprayed on the structural member through the pigment coating mechanism, and then the pigment is solidified through the first solidifying member, so that the pigment is solidified and attached on the medium layer, the color can be flexibly changed through spraying the pigment, the limitation of a printing layer is avoided, any printing layer comprises a colored pigment layer and the medium layer after being molded, the color of the pigment layer is enabled to be in color through the medium layer by layer through gradual lamination, and the one-time molding of the color model is realized.

Drawings

Fig. 1 is a schematic structural diagram of a stereoscopic forming apparatus according to an embodiment of the present utility model at a first view angle;

Fig. 2 is a schematic cross-sectional structure diagram of a stereoscopic molding apparatus according to an embodiment of the present utility model at a second view angle;

Fig. 3 is a schematic structural diagram of a stereoscopic forming apparatus according to an embodiment of the present utility model at a third view angle;

fig. 4 is a schematic structural diagram of a stereoscopic forming apparatus according to a fourth embodiment of the present utility model at a fourth view angle;

FIG. 5 is a schematic view of an exploded view of a structural member of a stereolithography apparatus according to an embodiment of the present utility model;

Fig. 6 is a schematic cross-sectional structure of a stereoscopic molding apparatus according to an embodiment of the present utility model;

FIG. 7 is an enlarged schematic view of the stereolithography apparatus shown in FIG. 6 in area A;

Fig. 8 is a schematic view of a part of an exploded structure of a stereoscopic molding apparatus according to an embodiment of the present utility model;

Fig. 9 is a schematic structural diagram of a doctor mechanism in a stereoscopic molding apparatus according to an embodiment of the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model to achieve the preset purpose, the following detailed description refers to the specific implementation, structure, features and effects of a three-dimensional forming device according to the present utility model with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a stereoscopic molding apparatus, including:

A construction 100;

A feeding and discharging mechanism 200, wherein the feeding and discharging mechanism 200 is opposite to the structural member 100, and the feeding and discharging mechanism 200 is used for adding medium to the structural member 100 or discharging medium on the structural member 100;

A printing platform 300, the printing platform 300 being opposite to the construction 100;

The lifting mechanism 400 is connected with the printing platform 300, and the lifting mechanism 400 is used for driving the printing platform 300 to move close to or away from the construction member 100;

A painting mechanism 500, the painting mechanism 500 being used to paint on the construction 100;

the first curing member 600, the first curing member 600 is at least for curing the pigment and the medium to form the current print layer on the print platform 400.

The medium is used for solidification molding of the model, and the medium is the material for printing the model. The medium that transmits light, such as a medium that is transparent, or a medium that transmits light of a particular color. The medium is transparent to light of a plurality of colors so as to develop the color of the pigment.

The construction 100 is used to receive media and participate in the curing of the media, and is also used to receive paint and participate in the curing of the paint. The construction member 100 includes a light-transmitting region for transmitting or generating the curing light, and the light-transmitting region has a supporting function, and the construction member 100 may be any structure satisfying the above conditions. If the construction member 100 is a display screen of the stereoscopic forming device, the display screen directly contacts the current printing layer for supporting and releasing the current printing layer; or the structural member 100 is a glass panel on the upper surface of the display screen, for example, an OLED display screen, where the OLED display screen can directly provide light with a preset contour to cure the medium or pigment, the light-emitting structure inside the OLED display screen is the first curing member 600, and the upper glass substrate of the OLED display screen is the structural member 100; or the construction member 100 is a transparent support plate or a transparent film different from the display screen; or the construction member 100 is a trough, and the trough comprises a release film, wherein the release film is used for transmitting light and is abutted with a display screen of the three-dimensional forming equipment so as to play a supporting role; or the construction member 100 is a trough, and the whole trough is made of light-transmitting materials.

The feeding and discharging mechanism 200 is used to add a medium to the upper surface of the transparent area of the construction member 100, and the coverage area of the medium is intended to ensure that the current printing layer can be formed, for example, the medium can be added in a spraying manner according to the contour of the current printing layer, or the medium can be introduced in a flowing manner over the entire transparent area of the construction member 100. The height of the media addition should be such that it is greater than the thickness of the current print layer, e.g., greater than the thickness of the current print layer, and may be less than twice the thickness of the current print layer. Alternatively, the thickness of the medium is less than 10mm.

The resin on the feeding and discharging mechanism 200 discharged from the constitution member 100 may be discharged only to the region for spraying the pigment so that the pigment may be adhered to the constitution member 100; the resin in the printing region of the structural member 100 may be entirely discharged. The print platform 300 is opposite the construction 100, meaning that the print platform 300 is opposite the light transmissive area or area for curing molding of the construction 100.

The lifting mechanism 400 may have various structures, for example, the lifting mechanism 400 includes a Z-axis guide frame, a motor, a screw rod and a slider, the printing platform 300 is connected with the slider, the slider is slidably connected to the Z-axis guide frame, the motor is connected with the screw rod, the screw rod is in threaded connection with the slider, and the motor drives the screw rod to rotate, so that the printing platform 300 can be pushed to move in the Z-axis direction, and then can approach or depart from the constructional element 100. Other structures of the lifting mechanism 400 are possible, and the present application is not limited thereto.

The painting mechanism 500 moves the paint in the transparent area of the structural member 100, specifically, sprays the paint according to the color information of the model, or the color to be presented by the current printing layer, and for the current printing layer, the paint sprayed can be a single color or can be spliced transition of a plurality of different colors. The shape of the pigment can be consistent with the outline of the current printing layer, and can be only a region extending to the edge of the current printing layer by a preset distance, for example, the preset distance is 1 millimeter, so that the effect of taking the color of the model into consideration and the reduction of the pigment consumption are achieved. The first curing member 600 is located on a side of the build member 100 opposite the printing platform 300, at least opposite the light transmissive region of the build member 100, and the first curing member 600 provides a corresponding curing environment according to the curing principles of the pigment and medium, such as providing ultraviolet light, where the light passes through the light transmissive region of the build member 100 to cure the pigment and medium to form a current printed layer exhibiting color.

The current printing layer comprises a pigment layer after pigment solidification and a medium layer after medium solidification, so that the color of the pigment layer can penetrate through the medium layer, and the model is expressed as color. The current printing layer forming process can be two modes:

In one embodiment, the resin on the structural member 100 is first emptied by the feeding and discharging mechanism, so that the structural member 100 is exposed at least in the area for forming the upper surface of the current printing layer, the pigment is coated on the structural member 100 by the pigment coating mechanism 500, and the pigment is cured by the first curing member 600, and the pigment is cured or partially cured, so that the pigment is fixed on the structural member 100; or the pigment is not cured, then resin is added to the construction member 100, the resin covers the pigment, the printing platform 300 is moved to the lower surface of the printing platform 300 or the lower surface of the formed model is separated from the construction member 100 by the thickness of the current printing layer, the pigment and the resin are irradiated through the first curing member 600 according to the outline of the layer model, the pigment and the resin are cured and formed together and adhered on the lower surface of the printing platform 300 or the lower surface of the formed model, then the printing platform 300 is lifted to a certain height, for example, the spraying height can be avoided when the color coating mechanism 500 is moved, and the process is repeated, so that the layer-by-layer printing can be performed.

In another embodiment, the feeding and discharging mechanism is used for adding resin to the structural member 100, moving the printing platform 300 to the lower surface of the printing platform 300 or the lower surface of the formed model and the thickness of the current printing layer of the structural member 100 at intervals, irradiating the resin according to the outline of the model of the current layer through the first curing member 600 to form a medium layer of the current printing layer, then lifting the printing platform 300 to a certain height, such as a height capable of avoiding the spraying of the movement of the painting mechanism 500, emptying the resin on the structural member 100, so that the structural member 100 is at least exposed in the upper surface area for forming the current printing layer, coating pigment on the structural member 100 by the painting mechanism 500, and curing the pigment or a part of the pigment through the first curing member 600, so that the pigment is fixed on the structural member 100; or the pigment is not cured, the printing platform 300 is lowered to the height that the medium layer of the current printing layer is contacted with the pigment, or the printing platform 300 is moved to the height that the printing platform 300 cures the resin layer of the current printing layer, the pigment is irradiated through the first curing part 600 according to the outline of the current layer model or the outline larger than the outline of the current layer model, the pigment is cured on the medium layer of the current printing layer, then the printing platform 300 is driven to move, the current printing layer is separated, and then the process is repeated, so that the layer-by-layer printing can be realized.

The stereolithography apparatus may further include a main support 800, where the main support 800 includes an upper plate 810, a lower plate 820, and a plurality of support bars 830, the upper plate 810 and the lower plate 820 being spaced apart, the support bars 830 connecting the upper plate 810 and the lower plate 820, and supporting the upper plate 810. The structural member 100 is disposed on the upper base plate 810, the main support 800 of the feeding and discharging mechanism 200 is directly or indirectly connected, for example, the feeding and discharging mechanism 200 is connected with the upper base plate 810 or the lower base plate 820, the lifting mechanism 400 is connected with the upper base plate 810, the painting mechanism 500 can be connected with the upper base plate 810 or the lower base plate 820 and is partially located above the upper base plate 810 for moving the painting mechanism 500 above the structural member 100, and the first curing member 600 is located between the upper base plate 810 and the lower base plate 820 and faces the structural member 100.

The storage mode of the medium may be various, for example, an external container may be used for storage, for example, the three-dimensional forming device includes a storage container, the storage container may be a material bottle or a storage container with a filtering function, the feeding and discharging mechanism 200 is respectively communicated with the storage container and the structural member 100, and the feeding and discharging mechanism 200 is used for conveying the medium on the structural member 100 to the storage container or conveying the medium from the storage container to the structural member 100.

Or it is also possible to dispense with an additional container, by means of which the construction of the construction element 100 is arranged such that the medium flows between the different receiving spaces of the construction element 100. As shown in fig. 5, the construction member 100 includes a printing area, a buffer slot 111 is formed on the construction member 100, the printing platform 300 is opposite to the printing area, the painting mechanism 500 is used for spraying pigment on the printing area, the feeding and discharging mechanism 200 is respectively communicated with the buffer slot 111 and the printing area, and the feeding and discharging mechanism 200 is used for conveying the medium on the printing area to the buffer slot 111 or conveying the medium from the buffer slot 111 to the printing area.

In embodiments where the form 100 includes a display screen, the print area may be a display area of the display screen, and the buffer slot 111 is opened in a non-display area of the display screen. In the embodiment of the construction member 100 being a trough, the construction member 100 includes a frame and a release film assembly 120, the frame is connected with the release film assembly 120, the printing area includes a partial area of the release film assembly 120, that is, the partial area of the release film assembly 120 is a printing area, and the frame is provided with a buffer groove 111.

In a more specific embodiment, the frame includes a frame 110 and a partition 130, the frame 110 is connected to the release film assembly 120, the partition 130 is located outside the release film assembly 120, the partition 130 is connected to the frame 110, and the partition 130 and the frame 110 enclose a buffer slot 111. The bottom wall of the buffer slot 111 far away from the printing platform 300 can be higher than the printing area or lower than the printing area, the bottom wall of the buffer slot 111 can be lowered to increase the amount of media which can be accommodated by the buffer slot 111, the longitudinal space is fully utilized, and the horizontal extension range of the construction member 100 is prevented from being too large. The buffer tank 111 has a function of accommodating a medium, and the partition 130 and the buffer tank 111 cooperate with each other to define a height at which the medium is added to the printing area. As shown in fig. 5 to 6, the height h of the partition 130 near the top of the printing platform 300 higher than the printing area is a preset height, for example, the height h is 0.5 millimeter, 1mm, 10mm, etc., or the height h is twice the thickness of the single-layer model, so that the height of the build member 100 for adding resin can meet the molding height of the current printing layer, and excessive addition is avoided, for example, excessive addition is avoided, the medium liquid level is higher than the top of the partition 130, and the medium flows into the buffer tank 111 beyond the partition 130, thereby ensuring that the problem of incomplete medium discharge caused by the error of the added medium is avoided when the medium is discharged.

Further, the frame 110 includes a base plate and a surrounding plate 140, where the surrounding plate 140 is connected to the base plate and extends to one side of the base plate, and the surrounding plate 140 encloses a printing space corresponding to a printing area of a part, or the surrounding plate 140 cooperates with the base plate and the partition 130 to jointly enclose a printing space corresponding to the printing area. In order to enable the medium with a certain height to be accumulated in the printing space, and when the medium is too much, the medium can overflow through the partition plate 130 and cannot overflow to the outer side of the frame 110 through the enclosing plate 140, and the height of the enclosing plate 140 is higher than that of the partition plate 130 or the height of the partition plate 130 in the corresponding area of the printing space. The enclosing plate 140 is further used for enclosing a part of the buffer slot 111, or, the enclosing plate 140 cooperates with the bottom plate and the partition 130 to enclose the buffer slot 111 together, and the height of the enclosing plate 140 in the area corresponding to the buffer slot 111 may be higher than the partition 130 or not higher than the buffer slot 111.

The feeding and discharging mechanism 200 may perform the feeding and discharging of the medium in various ways, and in one embodiment, as shown in fig. 2 and 6-7, the feeding and discharging mechanism 200 includes a duct 210 and a power assembly, the duct 210 is at least in communication with the structural member 100, the power assembly is connected to the duct 210, and the power assembly is used to feed the medium onto the structural member 100 through the duct 210 or to withdraw the medium from the structural member 100.

The specific type of the power assembly is not limited, and may be, for example, an air pump or a combination of a magnetic wheel and a magnetic pump, or the power assembly includes a moving wheel 220 and an in-out power member 230, the moving wheel 220 is connected to the duct 210, the in-out power member 230 is connected to the moving wheel 220, the moving wheel 220 is a cam, and the in-out power member 230 is used to drive the moving wheel 220 to rotate the intermittent extrusion duct 210 to add a medium to the construction member 100 through the duct 210, or to draw out the medium on the construction member 100.

The feeding and discharging mechanism 200 may further include a fixing frame 240, and the fixing frame 240 is connected to the upper base plate 810 or the lower base plate 820 for fixing the moving wheel 220 and the feeding and discharging power member 230. As the moving wheel 220 rotates, intermittent compression pushes the media within the conduit 210. The change of the medium flow direction can be achieved by the forward rotation and the reverse rotation of the moving wheel 220. In embodiments where construct 100 includes a buffer slot 111, one end of conduit 210 may extend to the bottom of buffer slot 111, and the other end of conduit 210 is used to add or drain media to the print zone.

In one embodiment, the construction member 100 includes a printing area, the construction member 100 is provided with an inner groove 112 located outside the printing area, the inner groove 112 is lower than the printing area with respect to the bottom of the groove of the printing platform 300, and at least a part of the edge of the notch of the inner groove 112 near the printing area is not higher than the printing area.

Since the slot edge of the inner trough 112 near the print zone is at least partially not higher than the print zone, the media on the print zone has a tendency to flow to the inner trough 112, facilitating the discharge of media on the print zone. In some embodiments, an external scraping element may be used to scrape off residual media from the upper surface of the print zone, where the hanging media is scraped to the inner trough 112, and the inner trough 112 acts to collect the residual media. In embodiments where the construct 100 includes a frame and a release film assembly 120, the frame is provided with an interior groove 112. In the embodiment in which the frame includes the frame 110 and the partition 130, the inner groove 112 is disposed on the frame 110, and the inner groove 112 and the buffer groove 111 may have various positional relationships, such as being adjacent to each other, and the inner groove 112 is disposed adjacent to the partition 130.

In the embodiment in which the feeding and discharging mechanism 200 includes the guide pipe 210, the moving wheel 220, and the feeding and discharging power member 230, a guide pipe fixing member may be provided, the guide pipe fixing member being fixed to the frame 110 and being opposite to the inner tank 112 and the buffer tank 111, both ends of the guide pipe 210 being respectively fixed by the guide pipe fixing member and respectively extending to the bottoms of the inner tank 112 and the buffer tank 111 or to positions near the bottoms thereof. The moving wheel 220 and the access member 230 may be disposed below the structural member 100 and opposite the areas of the inner tank 112 and the buffer tank 111. When media is added to the print zone, media may be added to the inner trough 112 and will flow to the print zone when the level of the media exceeds the notch edge of the inner trough 112 no higher than the print zone. The inner tank 112 and the buffer tank 111 are adjacent to each other, and serve to reduce the length of the guide pipe 210, so that the flow time of the medium between the inner tank 112 and the buffer tank 111 is short, and the efficiency of adding and discharging the medium is increased. In the foregoing embodiments in which the frame 110 includes a floor and a shroud 140, the shroud 140 is also configured to enclose a portion of the inner tank 112, or the shroud 140 cooperates with the floor to enclose the inner tank 112.

In one embodiment, the frame has an opening 113 formed therein, or the frame 110 has an opening 113 formed therein. The release film assembly 120 is connected to the frame 110 and covers the opening 113. The frame or the frame body 110 is further provided with a mounting groove 114, the mounting groove 114 is located outside the opening 113, the release film assembly 120 comprises a release film and an outer frame, the printing platform 300 is opposite to the release film, the painting mechanism 500 is used for spraying pigment on the release film, the release film is connected with the outer frame, the outer frame is embedded into the mounting groove 114 and is fixed with the frame, and the frame is abutted to the release film so as to tension the release film. The mounting groove 114 is formed on the side of the frame facing the printing platform 300, and the area of the release film opposite to the opening 113 is equal to or higher than at least part of the edge of the notch of the inner groove 112, which is close to the printing area.

The frame 110 is abutted against the release film from bottom to top, so that the release film is tensioned upwards, the printing area comprises an area of the release film opposite to the opening 113, the printing area is located at a higher position by tensioning the release film upwards, and the medium flows to the inner groove 112 more smoothly. More specifically, in the embodiment in which the frame 110 includes a bottom plate, the opening 113, the mounting groove 114 and the inner groove 112 are all formed on the bottom wall, and the release film is tensioned upward, so that the release film is higher than the bottom wall, and the height of the release film exceeds the thickness of the release film, and the upper surface of the release film and the bottom wall can be regarded as being on the same plane approximately due to the thinness of the release film, so that the inner groove 112 and the release film, or the medium between the inner groove 112 and the printing area, flows smoothly without obstruction.

In the embodiment of non-solidification after pigment spraying, in order to avoid pigment from being driven by a medium with higher fluidity to move, a spraying mode can be adopted to add the medium. If the three-dimensional forming equipment further comprises a spraying part, the feeding and discharging mechanism 200 is connected with the spraying part, the feeding and discharging mechanism 200 is used for providing media for the spraying part, and the spraying part is used for spraying the media on the structural part 100 or sucking the media on the structural part 100.

A spray moving unit for moving the spray member may be provided, or the spray member may be connected to a moving unit of the painting mechanism 500 for movable spraying. The shower member may be adapted to any of the embodiments of the construction member 100 described above, and any of the embodiments of the feeding and discharging mechanism 200 described above, for example, the conduit 210 may have one end connected to the shower member and the other end communicating with the buffer tank 111.

In one embodiment, as shown in FIG. 1, the painting mechanism 500 includes a spray head assembly 510 and a moving unit, the spray head assembly 510 includes a controllable spray head 511, the controllable spray head 511 is connected to the moving unit, and the moving unit is at least used to drive the controllable spray head 511 to move.

The controllable nozzle 511 is moved to spray paint onto the construction member 100, so that it can be flexibly sprayed according to the color required for the current printing layer, such as spraying a plurality of colors or coating only a partial area of the current printing layer with the colors. Pigments include a variety of different colors, such as may be three colors: magenta, green, blue, or also four colors: cyan, magenta, yellow, black, etc., different colors may be mixed to form a new desired color. The spray head assembly 510 further includes a plurality of primary ink cartridges 512 and a plurality of feeding members 513, wherein any primary ink cartridge 512 is used for storing pigment of one color, the controllable spray head 511 includes a plurality of controllable nozzles, any primary ink cartridge 512 corresponds to at least one controllable nozzle, and a feed inlet is formed in the controllable spray head 511. The feeding member 513 is connected to the feeding port and the primary ink box 512, and the primary ink box 512 is used for feeding the controllable nozzle 511 through the feeding member 513, and the controllable nozzle is used for opening and closing so as to selectively spray paint onto the release film assembly 120. The primary ink cartridges 512, the feeding member 513, and the feeding ports may be in one-to-one correspondence. The feeding member 513 is used for extracting the pigment in the primary ink cartridge 512 and delivering the pigment to the controllable nozzle. The controllable nozzle may include a piezoelectric ceramic sheet, and the piezoelectric ceramic sheet is deformed by a driving voltage of a preset frequency acting on the piezoelectric ceramic sheet, and the piezoelectric ceramic extrudes the pigment by a contraction effect, so that the pigment is ejected.

The feeding member 513 may be fed in various manners, for example, in one embodiment, the feeding member 513 includes a feeding tube and a feeding power member, the feeding tube is connected to the feeding port and the primary ink box 512, and the feeding power member is connected to the feeding tube to drive the pigment to flow, and the feeding power member may be a peristaltic pump, an air pump, etc. Or the controllable nozzle 511 further comprises a secondary ink box which is communicated with the controllable nozzle and the feeding opening, the feeding piece 513 comprises a feeding pipe, and the secondary ink box is a negative pressure ink box. The pigment in the primary ink box 512 is continuously supplied to the secondary ink box through the feeding pipe by the pressure difference between the secondary ink box and the primary ink box 512, so that the material breakage is avoided, and the control is simple.

In one embodiment, the spray head assembly 510 further comprises a mounting plate 514 and a control member, wherein the mounting plate 514 is connected with the controllable spray head 511, the control member is connected with the mounting plate 514 and is electrically connected with the controllable spray head 511, and the control member is electrically connected with a master controller of the stereolithography apparatus and is used for controlling the opening and closing of the controllable spray nozzle of the controllable spray head 511. The mounting plate 514 is arranged so that the control member is closer to the controllable spray head 511, the transmission distance of the control signal is reduced, and the control signal is prevented from being disturbed.

In one embodiment, the nozzle assembly 510 further includes a wire fixing plate 515, where the wire fixing plate 515 is connected to the moving unit, and the wire fixing plate 515 is used to fix the feeding member 513, for example, in an embodiment where the feeding member 513 includes feeding tubes, the number of the feeding tubes is multiple, and the feeding tubes can be limited by the wire fixing plate 515, so that the feeding tubes are prevented from falling down to affect the appearance, and the feeding tubes are prevented from being separated from the primary ink box 512 or the controllable nozzle 511 due to scraping.

The moving unit may be of various constructions in order to ensure that the controllable nozzle 511 moves at least in a plane parallel to the upper surface of the construction element 100 in order to achieve the desired colour application according to the current printed layer. In the following detailed embodiment, the moving unit includes a first moving component 520 and a second moving component 530, where the first moving component 520 is connected to the second moving component 530, the spray head component 510 is connected to the second moving component 530, the first moving component 520 is used for driving the second moving component 530 to drive the controllable spray head 511 to move in a first direction, and the second moving component 530 is used for driving the controllable spray head 511 to move in a second direction, where the first direction and the second direction are different directions.

As shown in fig. 1, the first direction and the second direction may be perpendicular to each other, the first direction may be the x direction shown in the figure, and the second direction may be the y direction shown in the figure, so as to implement free movement spraying of the spray head assembly 510 in the x-y plane. Because the second moving component 530 has a certain length in the y direction, in order to ensure that the second moving component 530 is stable and not easy to shake, the first moving component 520 includes two sub-moving components, the two sub-moving components are arranged at intervals, and the two sub-moving components are respectively connected with two ends of the second moving component 530. The second moving component 530 is required to be disposed above the upper base plate 810 to drive the controllable spray head 511 to spray the surface of the structural member 100 connected to the upper base plate 810, the first moving component 520 may be disposed below the upper base plate 810, and the upper base plate 810 is provided with a connecting hollow extending in the x direction, and the first moving component 520 is connected with the second moving component 530 through the connecting hollow.

The first moving assembly 520 and the second moving assembly 530 may have various structures, for example, the sub-moving assembly may be a belt driving assembly or a screw driving assembly, and the second moving assembly 530 may be a belt driving assembly or a screw driving assembly, or may be driven by any driving method in the art, for example, the following specific implementation manner is shown in the following examples: as shown in fig. 3, the sub-moving assembly of the first moving assembly 520 includes a first supporting plate 521, a first power member, a first driving wheel 522, a first rail 523, a first moving block 524 and a first conveyor belt 525, wherein the relative positions of the first supporting plate 521 and the structural member 100 are fixed, the first power member and the first driving wheel 522 are respectively connected with the first supporting plate 521 and distributed at intervals, the first rail 523 is connected with the first supporting plate 521 and extends in a first direction, the first moving block 524 is slidably connected with the first rail 523, the first conveyor belt 525 is wound on the first power member and the first driving wheel 522, the first conveyor belt 525 is connected with the first moving block 524, the second moving assembly 530 is connected with the first moving block 524, and the first power member is used for driving the first conveyor belt 525 to move so as to drive the second moving assembly 530 and the controllable spray head 511 to move in the first direction through the first moving block 524. As shown in fig. 2, the second moving assembly 530 includes a second support plate 531, a second power member 532, a second track 533, a second moving block 534, a second conveyor belt 535 and a second driving wheel 536, the second support plate 531 is connected to the first moving assembly 520, the second power member 532 and the second driving wheel 536 are respectively connected to the second support plate 531 and are arranged at intervals, the second track 533 is connected to the second support plate 531 and extends in a second direction, the second moving block 534 is slidably connected to the second track 533, the second conveyor belt 535 is wound around the second power member 532 and the second driving wheel 536, the second conveyor belt 535 is connected to the second moving block 534, the controllable spray head 511 is connected to the second moving block 534, and the second power member 532 is used for driving the second conveyor belt 535 to move so as to drive the controllable spray head 511 to move in the second direction through the second moving block 534.

The first end of the first moving block 524 is slidably connected to the first rail 523, and the second end of the first moving block 524 passes through the connection hollow of the upper base plate 810 and is connected to the second support plate 531. The second backup pad 531 can be the aluminium alloy, guarantees structural strength and alleviates the drive burden. By driving the movement with the first conveyor 525 and the second conveyor 535, the driving response is faster and the overall weight of the mobile unit is lighter.

In order to ensure that the position of the controllable spray nozzle 511 is more accurate, an additional position detecting member can be used for tracking and detecting the position of the controllable spray nozzle 511, so that the spray color is accurate. In one embodiment, as shown in fig. 8, the painting mechanism 500 further includes a position detecting member 540, the position detecting member 540 being opposite to the controllable nozzle 511, and the position detecting member 540 being configured to sense the position of the controllable nozzle 511.

The position detecting member 540 may be fixed to the upper base plate 810 and opposite to the second moving member 530, such as opposite to the second support plate 531 or the first moving block 524, to indirectly opposite to the controllable nozzle 511, to detect the actual x-direction position of the controllable nozzle 511. The position detecting member 540 may also be disposed on the first moving assembly 520 directly opposite the controllable nozzle 511 to detect the actual y-direction position of the controllable nozzle 511. In a specific embodiment, the position detecting member 540 includes a grating ruler, where the grating ruler includes a scanning head and a straight line, where the scanning head is connected to the controllable nozzle 511 or the second moving block 534, and the straight line is fixed on the second support plate 531 through a bracket and extends parallel to the second support plate 531, where the scanning head is opposite to the straight line. The controllable spray head 511 or the second moving block 534 drives the scanning head to move relative to the straight line, so that the accurate position of the controllable spray head 511 moving in the y direction can be obtained. Or the scanning head is connected with the second support plate 531 or the first moving block 524, and the straight line can be fixed on the first support plate 521 or the upper bottom plate 810 through a bracket, and is arranged in parallel with the first support plate 521 in an extending manner, and the scanning head is opposite to the straight line. The second support plate 531 or the first moving block 524 will drive the scanning head to move relative to the straight line, so that the accurate position of the controllable spray head 511 moving in the x direction can be obtained, and when the position deviation occurs, the spray can be performed after correction, so as to ensure the pigment position accuracy.

In one embodiment, the painting mechanism 500 further includes a second curing member 550, the second curing member 550 being opposite the release film assembly 120 for curing the paint.

The second curing member 550 is different from the first curing member 600 in that the second curing member 550 is used for curing the paint, and in one embodiment, the second curing member 550 is connected to the second moving block 534 or the controllable nozzle 511 in the moving unit, and the second curing member 550 is used for moving the cured paint. The second curing members 550 may be provided in plural, for example, two, on both sides of the controllable nozzle 511 in the y direction. The second curing member 550 may be a linear light source or a point light source, and may be an ultraviolet light source, and in the process of moving and spraying the controllable spray head 511, the second curing member 550 moves along with the controllable spray head 511, so as to cure the pigment while spraying, and avoid pigment flowing and shifting. Or in some embodiments, the moving curing can be performed after the pigment spraying is finished, so that the coverage area of curing light can be reduced, and the problem of medium temperature rise caused by the light can be solved.

In one embodiment, the stereolithography apparatus further comprises a doctor mechanism 700, the doctor mechanism 700 being configured to move relative to the build member 100 to doctor against the medium on the upper surface of the build member 100. In the embodiment where the inner groove 112 is formed in the construction member 100, the scraper mechanism 700 may scrape and push the medium on the upper surface of the construction member 100 into the inner groove 112, so that on one hand, the storage of the residual medium is realized, on the other hand, the residual medium is used as a basis for adding the medium to the construction member 100 next time, and then, the complete removal of the medium on the construction member 100 is considered, the total amount of the medium to be added when the medium is added next time is reduced, and the time for adding the medium can be shortened.

The doctor mechanism 700 is used for moving the doctor, and a separate driving member may be provided to perform the movement of the doctor mechanism 700, for example, the stereolithography apparatus further includes a doctor moving member to which the doctor mechanism 700 is connected, the doctor moving member being used to drive the doctor mechanism 700 to move. Alternatively, in the foregoing embodiment in which the color coating mechanism 500 includes the spray head assembly 510 and the moving unit, the doctor mechanism 700 is connected to the moving unit, specifically, the doctor mechanism 700 may extend in the y direction, the doctor mechanism 700 is connected to the second support plate 531 of the second moving assembly 530, the doctor mechanism 700 and the controllable spray head 511 may be located on opposite sides of the second support plate 531, and the first moving assembly 520 drives the controllable spray head 511 and the doctor mechanism 700 to move in the x direction.

In order to allow for the doctor mechanism 700 to both catch media above the build member 100 and not contact the build member 100 when painting paint, in one embodiment, the doctor mechanism 700 includes a doctor assembly 710, a roll-over power member 720, and a doctor bracket 730, the doctor bracket 730 being connected to a doctor moving member or unit, the roll-over power member 720 being connected to the doctor bracket 730, and a first end of the doctor assembly 710 being connected to the roll-over power member 720, as shown in fig. 9. The scraper supporter 730 is connected to the second support plate 531 of the scraper moving member or moving unit, the scraper assembly 710 extends in the y-direction, and the number of the overturning power members 720 is two, and the overturning power members are respectively connected to two ends of the scraper assembly 710 in the y-direction and are used for driving the scraper assembly 710 to rotate. So that the second end of the scraper assembly 710 moves to switch positions. If the position of the second end of the scraper assembly 710 includes a scraping position and a storage position, the overturning power member 720 is used to drive the scraper assembly 710 to rotate, so that the second end of the scraper assembly 710 is switched between the scraping position and the storage position, and the second end of the scraper assembly 710 is closer to the structural member 100 than the storage position. In the stowed position, the second end of the scraper assembly 710 is spaced away from the construct 100, e.g., the direction from the first end to the second end of the scraper assembly 710 may be horizontal or sloped upward so that the second end of the scraper assembly 710 does not contact the construct 100. In the scraping position, the second end of the scraper assembly 710 is close to the structural member 100, for example, the direction from the first end to the second end of the scraper assembly 710 may be vertical or inclined downward, and the scraper assembly 710 abuts against the structural member 100 to scrape residual media.

To ensure that the doctor assembly 710 docs off residual media without damaging the construct 100, in one embodiment, the doctor assembly 710 includes a doctor 711 and a toolholder 712, the toolholder 712 being coupled to a roll-over motive member 720, the toolholder 712 being formed from a dimensionally stable material having a degree of rigidity, such as a metal toolholder. A first end of the blade 711 is coupled to a tool holder 712. The blade 711 is a flexible blade, such as a soft gel, foam or silicone blade. In some embodiments, the doctor blade 711 is coated with a release layer, which may be a fluorine coating, on at least a second end thereof, which may reduce the sticking of the medium to the doctor blade 711.

As described above, the construction member 100 may be a display screen, a glass panel on the upper surface of the display screen, a transparent support plate, or a trough, and the like, and the different construction members 100 may be configured to be connected to the upper base plate 810 in different manners and with different relative positions to the first curing member 600. In one embodiment, the three-dimensional forming device further includes a display screen, the upper substrate 810 is provided with a light-transmitting opening, the display screen is laid on the light-transmitting opening, the structural member 100 is a trough, the trough is connected with the upper substrate 810, and can be connected with the upper substrate 810 by bolts, and the release film is abutted with the display screen, and the first curing member 600 is located on one side of the display screen opposite to the printing platform 300 and is used for projecting backlight to the display screen, so that the backlight passes through the display screen to form curing light adapted to the contour of the current printing layer. In another embodiment, the upper substrate 810 is provided with a light-transmitting opening, the first curing member 600 is laid on the light-transmitting opening, the structural member 100 is connected with the upper substrate 810 and is abutted to the first curing member 600, the first curing member 600 is used for projecting curing light to the structural member 100, the first curing member 600 directly generates light adapted to the contour of the current printing layer, the first curing member 600 can be an OLED display screen, and the structural member 100 can be a trough. In still another embodiment, the upper base 810 is provided with a light-transmitting opening, the structural member 100 and the first curing member 600 are stacked and arranged and are all laid on the light-transmitting opening, the first curing member 600 is used for projecting curing light adapted to the contour of the current printing layer to the structural member 100, the first curing member 600 may be a light generating part structure of the OLED display screen, the structural member 100 may be equivalent to an upper glass substrate of the OLED display screen, or the first curing member 600 is the whole OLED display screen, and the structural member 100 is an additional light-transmitting plate.

The application also provides the following embodiments:

Reference numeral 1, a three-dimensional shaping apparatus, comprising:

a construction 100; a feeding and discharging mechanism 200, wherein the feeding and discharging mechanism 200 is opposite to the structural member 100, and the feeding and discharging mechanism 200 is used for adding medium to the structural member 100 or discharging medium on the structural member 100;

The lifting mechanism 400 is connected with the printing platform 300, and the lifting mechanism 400 is used for driving the printing platform 400 to move close to or away from the construction member 100;

The first curing member 600, the first curing member 600 is used to cure the paint and the medium to form the current print layer on the print platform 400.

Reference numeral 2, the stereolithography apparatus according to reference numeral 1, wherein,

The stereolithography apparatus includes a storage container, and a feed-in and feed-out mechanism 200 in communication with the storage container and the build member 100, respectively, the feed-in and feed-out mechanism 200 being configured to transfer a medium on the build member 100 to the storage container or transfer a medium from the storage container to the build member 100.

Reference numeral 3, the stereolithography apparatus according to reference numeral 1, wherein the structure 100 includes a printing area, the structure 100 is provided with a buffer slot 111 located outside the printing area, the printing platform 300 is opposite to the printing area, the painting mechanism 500 is used for spraying pigment on the printing area, the feeding and discharging mechanism 200 is respectively communicated with the buffer slot 111 and the printing area, and the feeding and discharging mechanism 200 is used for conveying media on the printing area to the buffer slot 111 or conveying media from the buffer slot 111 to the printing area.

Reference numeral 4, the stereo lithography apparatus according to reference numeral 3, wherein the construction member 100 includes a frame and a release film assembly 120, the frame is connected with the release film assembly 120, a partial area of the release film assembly 120 is a printing area, and a buffer groove 111 is formed in the frame; the frame comprises a frame body 110 and a baffle 130, wherein the frame body 110 is connected with the release film assembly 120, the baffle 130 is positioned at the outer side of the release film assembly 120, the baffle 130 is connected with the frame body 110, and the baffle 130 and the frame body 110 are enclosed into a buffer groove 111; the top end of the partition 130 near the printing platform 300 is higher than the printing area by a preset height, and the bottom wall of the buffer tank 111 far from the printing platform 300 is lower than the printing area.

The stereoscopic forming device according to the reference numeral 5 and the reference numeral 1, wherein the structural member 100 comprises a printing area, an inner groove 112 positioned outside the printing area is formed on the structural member 100, the printing platform 300 is opposite to the printing area, the painting mechanism 500 is used for spraying pigment on the printing area, the groove bottom of the inner groove 112 is lower than the printing area, and at least part of the edge of a groove opening of the inner groove 112, which is close to the printing area, is not higher than the printing area; the construction member 100 comprises a frame and a release film assembly 120, the frame is connected with the release film assembly 120, the release film assembly 120 comprises a printing area, and an inner groove 112 is formed in the frame.

The three-dimensional forming equipment according to the reference numeral 6 and the reference numeral 5, wherein an opening 113 is formed on the frame, and the release film component 120 is connected with the frame and covers the opening 113;

The frame is also provided with a mounting groove 114, the mounting groove 114 is positioned at the outer side of the opening 113, the release film assembly 120 comprises a release film and an outer frame, the release film comprises a printing area, the release film is connected with the outer frame, the outer frame is embedded into the mounting groove 114 and is fixed with the frame, and the frame is abutted against the release film to tension the release film;

The mounting groove 114 is formed on the side of the frame facing the printing platform 300, and the area of the release film opposite to the opening 113 is equal to or higher than at least part of the edge of the notch of the inner groove 112, which is close to the printing area.

Reference numeral 7, the stereolithography apparatus according to reference numeral 6, wherein,

The frame is also provided with a buffer groove 111, a baffle 130 is arranged between the buffer groove and the mounting groove 114, and the height of the baffle 130 is higher than that of the release film.

The stereolithography apparatus according to reference numeral 8, reference numeral 7, wherein the frame includes a surrounding plate 140 enclosing a printing space corresponding to a partial printing area, a partial inner tank 112, and a partial buffer tank 111, and the height of the surrounding plate 140 is higher than that of the partition 130.

The stereolithography apparatus according to reference numeral 9, reference numeral 1, wherein the feeding and discharging mechanism 200 includes a duct 210 and a power assembly, the duct 210 being in communication with at least the structural member 100, the power assembly being connected to the duct 210, the power assembly being for adding a medium to the structural member 100 through the duct 210 or extracting the medium from the structural member 100;

And/or, the three-dimensional forming equipment further comprises a spraying part, the feeding and discharging mechanism 200 is connected with the spraying part, the feeding and discharging mechanism 200 is used for providing media for the spraying part, and the spraying part is used for spraying the media on the construction part 100 or sucking the media on the construction part 100.

The stereolithography apparatus according to reference numeral 10 and reference numeral 9, wherein the power assembly includes a moving wheel 220 and a power in and out member 230, the moving wheel 220 is connected to the guide pipe 210, the power in and out member 230 is connected to the moving wheel 220, the moving wheel 220 is a cam, and the power in and out member 230 is used to drive the moving wheel 220 to rotate the intermittent extrusion guide pipe 210 to add a medium to the construction member 100 through the guide pipe 210 or to draw out the medium on the construction member 100.

The stereolithography apparatus according to reference numeral 11, wherein the painting mechanism 500 includes a spray head assembly 510 and a moving unit, the spray head assembly 510 including a controllable spray head 511, the controllable spray head 511 being connected to the moving unit, the moving unit being at least for driving the controllable spray head 511 to move;

The paint comprises a plurality of different colors, the spray head assembly 510 further comprises a plurality of primary ink boxes 512 and a plurality of feeding pieces 513, any primary ink box 512 is used for storing the paint with one color, the controllable spray head 511 comprises a plurality of controllable nozzles, any primary ink box 512 corresponds to at least one controllable nozzle, and a feed inlet is formed in the controllable spray head 511;

The feeding member 513 is connected to the feed inlet and the primary ink cartridge 512, respectively, and the primary ink cartridge 512 is configured to feed the controllable nozzle 511 through the feeding member 513, and the controllable nozzle is configured to be opened and closed to selectively spray paint onto the structural member 100.

Reference numeral 12, the stereoscopic shaping apparatus according to reference numeral 11, wherein, the first-stage ink box 512, the feeding member 513 and the feed inlet are in one-to-one correspondence;

Or the feeding part 513 comprises a feeding pipe and a feeding power part, wherein the feeding pipe is respectively connected with the feeding port and the primary ink box 512, and the feeding power part is connected with the feeding pipe so as to drive pigment to flow;

Or the controllable nozzle 511 further comprises a secondary ink box which is communicated with the controllable nozzle and the feeding opening, the feeding piece 513 comprises a feeding pipe, and the secondary ink box is a negative pressure ink box.

The reference numeral 13, the stereolithography apparatus according to reference numeral 11, wherein the nozzle assembly 510 further comprises a mounting plate 514 and a control member, the mounting plate 514 is connected with the controllable nozzle 511, the control member is connected with the mounting plate 514 and is electrically connected with the controllable nozzle 511, the control member is electrically connected with a master controller of the stereolithography apparatus, and is used for controlling the opening and closing of the controllable nozzle 511;

and/or, the nozzle assembly 510 further includes a wire fixing plate 515, the wire fixing plate 515 being connected to the moving unit, the wire fixing plate 515 being used to fix the feeding part 513.

The stereoscopic forming device according to reference numeral 14 and reference numeral 11, wherein the moving unit includes a first moving assembly 520 and a second moving assembly 530, the first moving assembly 520 is connected with the second moving assembly 530, the spray head assembly 510 is connected with the second moving assembly 530, the first moving assembly 520 is used for driving the second moving assembly 530 to drive the controllable spray head 511 to move in a first direction, and the second moving assembly 530 is used for driving the controllable spray head 511 to move in a second direction, and the first direction and the second direction are different directions.

The stereolithography apparatus according to reference numeral 15, reference numeral 14, wherein the first moving assembly 520 comprises at least one sub-moving assembly, the sub-moving assembly being a belt drive assembly or a screw drive assembly;

The number of the sub-moving assemblies is two, the two sub-moving assemblies are arranged at intervals, and the two sub-moving assemblies are respectively connected with two ends of the second moving assembly 530;

And/or the second moving assembly 530 is a belt drive assembly or a screw drive assembly.

Reference numeral 16, the stereolithography apparatus according to reference numeral 11, wherein the painting mechanism 500 further comprises a position detecting member 540, the position detecting member 540 being opposite to the controllable nozzle 511, the position detecting member 540 being configured to sense the position of the controllable nozzle 511; the position sensing member 540 includes a grating scale.

The stereolithography apparatus according to reference numeral 17 and reference numeral 11, wherein the painting mechanism 500 further includes a second curing member 550, the second curing member 550 being opposite to the release film assembly 120 for curing the paint; the second curing member 550 is connected to the moving unit or the controllable nozzle 511, and the second curing member 550 is used to move the cured pigment.

Reference numeral 18, the stereolithography apparatus according to reference numeral 1, wherein the stereolithography apparatus further comprises:

a scraper mechanism 700, the scraper mechanism 700 being configured to move relative to the construction member 100 to scrape a medium against an upper surface of the construction member 100;

The three-dimensional forming equipment further comprises a scraper moving part, wherein the scraper mechanism 700 is connected with the scraper moving part, and the scraper moving part is used for driving the scraper mechanism 700 to move;

or the painting mechanism 500 includes a moving unit to which the blade mechanism 700 is connected, the moving unit being for driving the blade mechanism 700 to move.

The stereolithography apparatus according to reference numeral 19, reference numeral 16, wherein the doctor mechanism 700 includes a doctor assembly 710, a roll-over power member 720, and a doctor bracket 730, the doctor bracket 730 being connected to a doctor moving member or a moving unit, the roll-over power member 720 being connected to the doctor bracket 730, a first end of the doctor assembly 710 being connected to the roll-over power member 720; the second end of the scraper assembly 710 includes a scraping position and a storage position, and the overturning power member 720 is configured to drive the scraper assembly 710 to rotate, so that the second end of the scraper assembly 710 is switched between the scraping position and the storage position, and the second end of the scraper assembly 710 is closer to the structural member 100 than the storage position.

The stereolithography apparatus according to reference numeral 20, 19, wherein the doctor assembly 710 includes a doctor 711 and a tool holder 712, the tool holder 712 being coupled to the roll-over power member 720, a first end of the doctor 711 being coupled to the tool holder 712; the blade 711 is a flexible blade and at least a second end of the blade 711 is coated with an anti-adhesive layer.

The reference numeral 21, the stereoscopic shaping apparatus according to reference numeral 1, wherein, the stereoscopic shaping apparatus further includes a main support 800 and a display screen, the main support 800 includes an upper base plate 810, a light-transmitting opening is formed on the upper base plate 810, the display screen is laid on the light-transmitting opening, the structural member 100 is used for being connected with the upper base plate 810 and being abutted with the display screen, the first curing member 600 is located at one side of the display screen opposite to the printing platform 300, and is used for projecting backlight to the display screen, so that the backlight passes through the display screen to form curing light adapted to the contour of the current printing layer;

Or the three-dimensional forming equipment further comprises a main support 800, the main support 800 comprises an upper bottom plate 810, a light transmission opening is formed in the upper bottom plate 810, a first curing member 600 is paved on the light transmission opening, the construction member 100 is connected with the upper bottom plate 810 and is abutted to the first curing member 600, and the first curing member 600 is used for projecting curing light which is matched with the contour of the current printing layer to the construction member 100;

Or the three-dimensional forming equipment further comprises a main support 800, the main support 800 comprises an upper bottom plate 810, a light transmission opening is formed in the upper bottom plate 810, the construction member 100 and the first curing member 600 are arranged in a stacked mode and are paved on the light transmission opening, and the first curing member 600 is used for projecting curing light which is matched with the contour of the current printing layer to the construction member 100.

The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A stereolithography apparatus, comprising:

A structural member;

The feeding and discharging mechanism is opposite to the construction piece and is used for adding media to the construction piece or discharging the media on the construction piece;

A print platform opposite the build;

The lifting mechanism is connected with the printing platform and used for driving the printing platform to move close to or away from the construction piece;

A painting mechanism for painting paint on the construction;

And the first curing piece is used for curing the pigment and the medium to form a current printing layer on the printing platform.

2. The stereolithography apparatus as claimed in claim 1, wherein,

The three-dimensional forming equipment comprises a storage container, the feeding and discharging mechanism is respectively communicated with the storage container and the construction piece, and the feeding and discharging mechanism is used for conveying media on the construction piece to the storage container or conveying the media from the storage container to the construction piece.

3. The stereolithography apparatus as claimed in claim 1, wherein,

The construction piece comprises a printing area, a buffer groove outside the printing area is formed in the construction piece, the printing platform is opposite to the printing area, the color coating mechanism is used for spraying pigment on the printing area, the feeding and discharging mechanism is respectively communicated with the buffer groove and the printing area, and the feeding and discharging mechanism is used for conveying media on the printing area to the buffer groove or conveying the media from the buffer groove to the printing area.

4. The stereolithography apparatus as claimed in claim 3, wherein,

The construction piece comprises a frame and a release film assembly, the frame is connected with the release film assembly, a partial area of the release film assembly is the printing area, and the frame is provided with the cache groove;

the frame comprises a frame body and a baffle, the frame body is connected with the release film assembly, the baffle is positioned at the outer side of the release film assembly, the baffle is connected with the frame body, and the baffle and the frame body are enclosed into the cache groove;

the top end of the partition board, which is close to the printing platform, is higher than the printing area by a preset height, and the bottom wall of the buffer tank, which is far away from the printing platform, is lower than the printing area.

5. The stereolithography apparatus as claimed in claim 1, wherein,

The construction piece comprises a printing area, an inner groove positioned outside the printing area is formed in the construction piece, the printing platform is opposite to the printing area, the color coating mechanism is used for spraying pigment on the printing area, the bottom of the inner groove is lower than the printing area, and at least part of the edge of a notch of the inner groove, which is close to the printing area, is not higher than the printing area;

The construction piece comprises a frame and a release film assembly, wherein the frame is connected with the release film assembly, the release film assembly comprises a printing area, and the frame is provided with the inner groove.

6. The stereolithography apparatus as claimed in claim 5, wherein,

An opening is formed in the frame, and the release film assembly is connected with the frame and covers the opening;

The frame is further provided with a mounting groove, the mounting groove is positioned at the outer side of the opening, the release film assembly comprises a release film and an outer frame, the release film comprises a printing area, the release film is connected with the outer frame, the outer frame is embedded into the mounting groove and is fixed with the frame, and the frame is abutted against the release film to tension the release film;

The mounting groove is formed in one side, facing the printing platform, of the frame, the area, opposite to the opening, of the release film is equal to or higher than the area, close to the printing area, of the notch edge of the inner groove, and at least part of the area is formed.

7. The stereolithography apparatus as claimed in claim 6, wherein,

The frame is also provided with a buffer groove, a partition plate is arranged between the buffer groove and the mounting groove, and the height of the partition plate is higher than that of the release film.

8. The stereolithography apparatus according to claim 7, wherein said frame includes a shroud surrounding a portion of said print area corresponding to said print space, a portion of said inner tank, and a portion of said buffer tank, said shroud having a height greater than a height of said baffle.

9. The stereolithography apparatus as claimed in claim 1, wherein,

The feeding and discharging mechanism comprises a guide pipe and a power assembly, wherein the guide pipe is at least communicated with the construction member, the power assembly is connected with the guide pipe, and the power assembly is used for adding media to the construction member or extracting the media from the construction member through the guide pipe;

And/or, the three-dimensional forming equipment further comprises a spraying part, the feeding and discharging mechanism is connected with the spraying part, the feeding and discharging mechanism is used for providing a medium for the spraying part, and the spraying part is used for spraying the medium on the structural part or sucking the medium on the structural part.

10. The stereolithography apparatus according to claim 9, wherein said power assembly includes a moving wheel coupled to said conduit and an in and out power member coupled to said moving wheel, said moving wheel being a cam, said in and out power member for driving said moving wheel to intermittently squeeze said conduit to add or withdraw media from said build member through said conduit.

11. The stereolithography apparatus as claimed in claim 1, wherein,

The color coating mechanism comprises a spray head assembly and a moving unit, wherein the spray head assembly comprises a controllable spray head, the controllable spray head is connected with the moving unit, and the moving unit is at least used for driving the controllable spray head to move;

The paint comprises a plurality of different colors, the spray head assembly further comprises a plurality of primary ink boxes and a plurality of feeding pieces, any primary ink box is used for storing the paint with one color, the controllable spray head comprises a plurality of controllable nozzles, any primary ink box corresponds to at least one controllable nozzle, and a feed inlet is formed in the controllable spray head;

the feeding piece is respectively connected with the feeding port and the primary ink box, the primary ink box is used for feeding the controllable spray head through the feeding piece, and the controllable spray nozzle is used for opening and closing so as to selectively spray pigment on the structural piece.

12. The stereolithography apparatus as claimed in claim 11, wherein,

The primary ink box, the feeding piece and the feeding opening are in one-to-one correspondence;

Or the feeding piece comprises a feeding pipe and a feeding power piece, wherein the feeding pipe is respectively connected with the feeding port and the primary ink box, and the feeding power piece is connected with the feeding pipe so as to drive the pigment to flow;

Or the controllable nozzle further comprises a secondary ink box communicated with the controllable nozzle and the feeding opening, the feeding piece comprises a feeding pipe, and the secondary ink box is a negative pressure ink box.

13. The stereolithography apparatus as claimed in claim 11, wherein,

The spray head assembly further comprises a mounting plate and a control piece, wherein the mounting plate is connected with the controllable spray head, the control piece is connected with the mounting plate and is electrically connected with the controllable spray head, and the control piece is used for being electrically connected with a main controller of the three-dimensional forming equipment and controlling the opening and closing of a controllable spray nozzle of the controllable spray head;

And/or, the spray head assembly further comprises a wire fixing plate, the wire fixing plate is connected with the moving unit, and the wire fixing plate is used for fixing the feeding piece.

14. The stereolithography apparatus as claimed in claim 11, wherein,

The mobile unit comprises a first mobile component and a second mobile component, the first mobile component is connected with the second mobile component, the spray head component is connected with the second mobile component, the first mobile component is used for driving the second mobile component to drive the controllable spray head to move in a first direction, the second mobile component is used for driving the controllable spray head to move in a second direction, and the first direction and the second direction are different directions.

15. The stereolithography apparatus as recited in claim 14, wherein,

The first moving assembly comprises at least one sub-moving assembly, and the sub-moving assembly is a belt transmission assembly or a screw transmission assembly;

The number of the sub-moving assemblies is two, the two sub-moving assemblies are arranged at intervals, and the two sub-moving assemblies are respectively connected with two ends of the second moving assembly;

And/or the second moving assembly is a belt transmission assembly or a screw transmission assembly.

16. The stereolithography apparatus as claimed in claim 11, wherein,

The color coating mechanism further comprises a position detection piece, wherein the position detection piece is opposite to the controllable spray head and is used for sensing the position of the controllable spray head;

The position detecting member includes a grating scale.

17. The stereolithography apparatus as claimed in claim 11, wherein,

The painting mechanism further comprises a second curing member, which is opposite to the release film assembly of the construction member and is used for curing the pigment;

The second solidifying piece is connected with the moving unit or the controllable spray head and is used for moving and solidifying the pigment.

18. The stereolithography apparatus according to claim 1, further comprising:

A scraper mechanism for moving relative to the construction member to scrape and push a medium on an upper surface of the construction member;

The three-dimensional forming equipment further comprises a scraper moving part, wherein the scraper mechanism is connected with the scraper moving part, and the scraper moving part is used for driving the scraper mechanism to move;

Or the painting mechanism comprises a moving unit, the scraper mechanism is connected with the moving unit, and the moving unit is used for driving the scraper mechanism to move.

19. The stereolithography apparatus as recited in claim 18, wherein,

The scraper mechanism comprises a scraper assembly, a turnover power piece and a scraper bracket, wherein the scraper bracket is connected with the scraper moving piece or the moving unit, the turnover power piece is connected with the scraper bracket, and the first end of the scraper assembly is connected with the turnover power piece;

The position of the second end of the scraper assembly comprises a scraping position and a storage position, the overturning power piece is used for driving the scraper assembly to rotate, so that the second end of the scraper assembly is switched between the scraping position and the storage position, and when the scraping position is adopted, the second end of the scraper assembly is closer to the construction piece than when the storage position is adopted.

20. The stereolithography apparatus as recited in claim 19, wherein,

The scraper assembly comprises a scraper and a cutter holder, the cutter holder is connected with the overturning power piece, and the first end of the scraper is connected with the cutter holder;

The doctor blade is a flexible doctor blade, and at least a second end of the doctor blade is coated with an anti-adhesive layer.

21. The stereolithography apparatus as claimed in claim 1, wherein,

The three-dimensional forming equipment further comprises a main support and a display screen, wherein the main support comprises an upper bottom plate, a light transmission opening is formed in the upper bottom plate, the display screen is laid in the light transmission opening, the structural piece is used for being connected with the upper bottom plate and is abutted to the display screen, and the first curing piece is positioned on one side, opposite to the printing platform, of the display screen and is used for projecting backlight to the display screen, so that the backlight passes through the display screen to form curing light matched with the contour of a current printing layer;

Or the three-dimensional forming equipment further comprises a main support, wherein the main support comprises an upper bottom plate, a light transmission opening is formed in the upper bottom plate, the first curing piece is laid in the light transmission opening, the construction piece is used for being connected with the upper bottom plate and is abutted to the first curing piece, and the first curing piece is used for projecting curing light which is matched with the contour of the current printing layer to the construction piece;

or the three-dimensional forming equipment further comprises a main support, the main support comprises an upper bottom plate, a light transmission opening is formed in the upper bottom plate, the construction piece and the first curing piece are arranged in a stacked mode and are paved on the light transmission opening, and the first curing piece is used for projecting curing light which is matched with the contour of the current printing layer to the construction piece.