CN210553018U

CN210553018U - Component platform and 3D printing equipment applied by same

Info

Publication number: CN210553018U
Application number: CN201920056124.XU
Authority: CN
Inventors: 高晓飞
Original assignee: Shanghai Canmei Medical Technology Co ltd
Current assignee: Shanghai Canmei Medical Technology Co ltd
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2020-05-19
Anticipated expiration: 2029-01-14

Abstract

The application provides a component platform and 3D printing apparatus who uses thereof, the component platform includes: the component plate is parallel to the bottom surface of the containing groove in a working state, and is driven by the lifting driving mechanism to continuously adhere to the curing layer formed in the containing groove so as to form a 3D component in an accumulated mode; and the adjusting mechanism is connected between the lifting driving mechanism and the component plate and is used for adjusting the component plate to be in an inclined state from a parallel state relative to the bottom surface of the containing groove after the printing work is finished so as to discharge residual liquid on the component plate and/or the 3D component.

Description

Component platform and 3D printing equipment applied by same

Technical Field

The application relates to the technical field of 3D printing, in particular to a component platform and a 3D printing device applied by the component platform.

Background

The rapid prototyping technology is a discrete/stack prototyping technology, wherein a three-dimensional data model is cut into layers to obtain the outline of each layer, a machining path is designed according to outline information, a prototyping head obtains the entity of each layer under the control of a control system, and the entities are stacked layer by layer to obtain the final entity. 3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using bondable materials such as powdered metal, plastic, and resin, etc. in a layer-by-layer printing manner, based on a digital model file. The 3D printing apparatus manufactures a 3D object by performing such a printing technique. The 3D printing equipment has wide application in the fields of dies, customized commodities, medical jigs, prostheses and the like due to high forming precision. Wherein, because the 3D printing apparatus based on bottom surface exposure only need set up the high photocuring material of one deck at the appearance groove bottom, compare with exposure, more material saving, consequently receive the pet of pursuing of many individual character product producers.

The bottom surface exposure 3D printing equipment comprises a containing groove for containing the photocuring material, an optical system positioned below the bottom of the containing groove, a component plate positioned above the containing groove and a Z-axis driving mechanism for driving the component plate to lift up and down. When the 3D printing device is used for printing a 3D component, the optical system irradiates the light-cured material in the containing groove to form a first cured layer between the bottom of the containing groove and the component plate, the first cured layer is attached to the component plate, then the component plate is driven by the Z-axis driving mechanism to move upwards so that the first cured layer is separated from the bottom of the containing groove, then the component plate is descended so that the space between the bottom of the containing groove and the first cured layer is filled with the cured material to be cured, the optical system is used for irradiating again to obtain a second cured layer attached to the first cured layer, and the like, and the cured layers are accumulated on the component plate through multiple times of separation and irradiation to obtain the 3D component.

After once printing is completed, the Z-axis driving mechanism can lift the printed 3D component above the liquid level of the containing groove so as to drain residual liquid on the component plate and the 3D component, but due to the viscosity of the light-cured material, the process needs a long time, if the printed 3D component is complex in structure or comprises a groove structure, the time needed by the automatic residual liquid removing mode is longer, and if a worker takes down the component plate bonded with the 3D component for processing, unnecessary waste of the light-cured material can be caused.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a component platform and a 3D printing apparatus applied to the component platform, so as to more conveniently drain residual liquid on a component board and a 3D component after the 3D component is printed.

To achieve the above and other related objects, a first aspect of the present application discloses a component platform, applied to a 3D printing apparatus including a lifting drive mechanism and a vessel, the component platform including: the component plate is parallel to the bottom surface of the containing groove in a working state, and is driven by the lifting driving mechanism to continuously adhere to the curing layer formed in the containing groove so as to form a 3D component in an accumulated mode; and the adjusting mechanism is connected between the lifting driving mechanism and the component plate and is used for adjusting the component plate to be in an inclined state from a parallel state relative to the bottom surface of the containing groove after the printing work is finished so as to discharge residual liquid on the component plate and/or the 3D component.

In certain embodiments of the first aspect of the present application, the adjustment mechanism comprises: the movable block is provided with a hoisting structure connected with the lifting driving mechanism and a fixing structure used for fixing the component plate, and the hoisting structure is provided with a slideway used for adjusting the posture of the movable block; the locking assembly is matched with the hoisting structure; when the locking assembly is in a locking state, the locking part of the movable block is locked on the hoisting structure, and the component plate is in a component position parallel to the chassis of the accommodating groove; when the locking assembly is in a relaxed state, the movable block and the component plate slide along the slideway under the action of stress, and the component plate is adjusted from a parallel state relative to the chassis of the containing groove to an inclined state so as to be beneficial to discharging residual liquid on the component plate; when the locking assembly is in an unlocking state, the locking assembly slides out along the slide way so as to take down the movable block from the hoisting structure.

In certain embodiments of the first aspect of the present application, the movable block has an eccentric weight, and when the locking assembly is in the relaxed state, the movable block together with the component plate slides along the slideway under the action of the gravity of the eccentric weight, and the component plate is adjusted from a parallel state to an inclined state relative to the chassis of the accommodating groove so as to remove residual liquid on the component plate.

In certain embodiments of the first aspect of the present application, the slide way of the hoisting structure comprises a locking portion, a releasing end far away from the locking portion, and a limiting portion located between the locking portion and the releasing end, the limiting portion and the locking portion are not on the same plane space.

In certain embodiments of the first aspect of the present application, the slide way of the movable block includes a limiting portion, a releasing end far away from the limiting portion, and a locking portion located between the limiting portion and the releasing end, and the limiting portion and the locking portion are not on the same plane space.

In certain embodiments of the first aspect of the present application, the locking portion and the retaining portion of the slideway are arcuate between them.

In certain embodiments of the first aspect of the present application, the locking portion is a counter bore structure having a first step and a second step, and the first step extends along the slide, the locking assembly includes a boom, a bottom end of the boom is disposed for a step lock corresponding to the counter bore structure, and an adjustment member disposed at a top end of the boom, the step lock having a blocking step corresponding to the first step and a locking step corresponding to the second step.

In certain embodiments of the first aspect of the present application, the width of the limit stop of the slideway is less than the width of the blocking step.

In certain embodiments of the first aspect of the present application, the boom is a threaded rod threadedly coupled to the adjustment member.

In certain embodiments of the first aspect of the present application, the adjustment member is a manual knob or handle.

In certain embodiments of the first aspect of the present application, the adjustment member is coupled to the drive motor by a coupling, a gear, a belt, or a chain drive.

In certain embodiments of the first aspect of the present application, an expansion spring is sleeved on the suspension rod, and a pressing portion for pressing the top end of the suspension rod is provided on the lifting drive mechanism.

A second aspect of the present application discloses a 3D printing apparatus, comprising: a vessel having a light-transmitting bottom; an optical system for irradiating the photo-curable material in the vessel toward the transparent bottom to obtain a patterned cured layer; a component platform as described in the first aspect above; and the lifting driving mechanism is connected with the component platform and is used for controlling the component platform to perform lifting movement in the accommodating groove so as to enable the solidified layers continuously attached to the component platform to be accumulated to form a 3D component object.

In certain embodiments of the second aspect of the present application, the pocket is disposed on a pocket support.

In certain embodiments of the second aspect of the present application, the optical system comprises a DLP device or an LCD device.

In certain embodiments of the second aspect of the present application, the optical system is located directly below the vessel, and an optical axis of a viewing cone projected by the optical system is perpendicular to a bottom surface of the vessel.

In certain embodiments of the second aspect of the present application, the optical system is located at a side below the accommodating groove, and a reflecting mirror is disposed on a light path projected by the optical system, and an optical axis of a cone projected by the optical system is reflected by the reflecting mirror to be perpendicular to the bottom surface of the accommodating groove.

The utility model provides a component platform and 3D printing apparatus who is suitable for is through setting up an guiding mechanism between lift actuating mechanism and component board for adjust after print job finishes guiding mechanism realizes adjusting the component board to the tilt state so that get rid of by the parallel state in bottom surface of holding the groove relatively the component board and/or raffinate on the 3D component, and then do benefit to liquid photocuring material's recovery, also do benefit to right the aftertreatment process of 3D component.

Drawings

FIG. 1 is a schematic structural view of a component platform of the present application in one embodiment.

Fig. 2 is a schematic cross-sectional view of a component platform of the present application in a locked state in one embodiment.

FIG. 3 is a schematic cross-sectional view of a component platform of the present application in an inclined state according to an embodiment

Fig. 4 is an exploded perspective view of a component platform according to an embodiment of the present disclosure.

FIG. 5 is an exploded cross-sectional view of a component platform according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a hoisting structure of a movable block according to an embodiment of the present disclosure.

Fig. 7 is a schematic structural view of a hoisting structure of a movable block according to another embodiment of the present application.

Fig. 8-14 are schematic views of the component platform of the present application in an embodiment.

Fig. 15 is a schematic structural view of a hoisting structure of a movable block according to still another embodiment of the present application.

FIG. 16 is a schematic view of an embodiment of an adjustment member of the platform of the present application.

Fig. 17 is a schematic view of an adjustment member in the platform of the present application in another embodiment.

Fig. 18-21 are schematic views illustrating the implementation state of the adjusting member in the component platform according to the present application in still another embodiment.

Detailed Description

The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.

In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Spatially relative terms, such as "upper," "lower," "left," "right," "lower," "below," "lower," "above," "upper," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature as illustrated in the figures.

Although the terms first, second, etc. may be used herein to describe various elements or parameters in some instances, these elements or parameters should not be limited by these terms. These terms are only used to distinguish one element or parameter from another element or parameter. For example, the first step may be referred to as the first step without departing from the scope of the various described embodiments. The first step and the second step are both described as one step, but they are not the same step unless the context clearly indicates otherwise.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using bondable materials such as powdered metal, plastic, and resin, etc. in a layer-by-layer printing manner, based on a digital model file. In the 3D printing apparatus, for example, the printing material is a light-curable material such as photosensitive resin, and the 3D printing apparatus based on bottom exposure only needs to set a layer of high light-curable material at the bottom of a container (the container is also called as a container, a resin tank, a liquid tank, etc. in some other application scenes or embodiments), so that the material is saved compared with the upper exposure (for example, the 3D printing apparatus using SLA technology with laser scanning) apparatus, and therefore, the 3D printing apparatus is popular among many manufacturers of personalized products. After one-time printing is finished, the Z-axis driving mechanism can lift the printed 3D member above the liquid level of the containing groove so as to drain or remove residual liquid on the member plate and the 3D member, but the viscosity of the photocuring material enables the process to take longer time, and if the printed 3D member is complex in structure or comprises a groove structure, the automatic residual liquid removing mode needs long time or cannot remove residual liquid in the groove, so that the production efficiency is reduced; if the staff takes off the component plate bonded with the 3D component without waiting for emptying the residual liquid for processing, unnecessary waste of the light-cured material can be caused.

In view of this, the present application discloses a component platform, which is applied to a 3D printing apparatus including a lifting driving mechanism and a receiving slot, and in an embodiment, the 3D printing apparatus, for example, a bottom-exposure-based 3D printing apparatus, may be, for example, a bottom-exposure DLP (Digital Light Processing) apparatus or a bottom-exposure LCD (liquid crystal Display) apparatus.

In a DLP apparatus based on bottom exposure, the optical system is a projection device. For example, the projection apparatus includes a DMD chip, a controller, and a memory module in which a layered image for layering a 3D member model is stored. And the DMD chip irradiates the light source of each pixel on the corresponding layered image to the bottom surface of the accommodating groove after receiving the control signal of the control device. In fact, the mirror is composed of hundreds of thousands or even millions of micromirrors, each micromirror represents a pixel, and the projected image is composed of these pixels. The DMD chip may be simply described as a semiconductor optical switch and a micromirror plate corresponding to the pixel, and the control means allows/prohibits the light reflected from each of the micromirrors by controlling each optical switch in the DMD chip, thereby irradiating the corresponding layered image onto the photocurable material through the light-transmissive bottom of the vessel, so that the photocurable material corresponding to the shape of the image is cured to obtain a patterned cured layer.

For the LCD device with bottom exposure, the optical system of the LCD device is a 3D printing device including an LCD screen (LCD panel), a backlight source, a focusing lens, a fresnel lens, and a polarizing film, and in an exemplary illustration, the LCD device with bottom exposure operates in a manner that the backlight source penetrates through a condenser lens to make the light source uniformly distributed, and the fresnel lens makes the light vertically irradiate the LCD screen. The LCD screen is provided with a polarizing film on both sides, the polarizing film is the imaging base of the liquid crystal display, the imaging display of the LCD screen is transparent, and images can be irradiated on the light-cured resin through the LCD screen through the light-transmitting bottom of the container. The thin resin liquid between the component platform and the bottom film is cured under the light-transmitting irradiation of the LCD screen, the component platform lifts up the cured part to allow the liquid resin to be replenished, the component platform descends again, and the thin layer between the component platform and the bottom film is exposed again. In an exemplary embodiment, the resolution of the LCD screen is, for example, 1280 × 768 pixels, such as a 12 inch display screen with a dot matrix accuracy of 0.16 × 0.16 mm. That is to say the dimensional accuracy of the product formation imaged through the LCD screen can reach 0.16 mm. In different embodiments, the selection of a specific LCD screen may have different specifications according to actual requirements.

Generally, a 3D printing apparatus prints a 3D member by exposing and curing a material layer of a photocurable material layer by layer and accumulating the cured layers. The photo-curable material generally refers to a material that forms a cured layer after being irradiated by light (such as ultraviolet light, laser light, etc.), and includes but is not limited to: photosensitive resin, or a mixture of photosensitive resin and other materials. Such as ceramic powders, pigments, etc.

The material of the containing groove body includes but is not limited to: glass, plastic, solid resin, stainless steel, etc. Wherein, the capacity of the containing groove depends on the type of the 3D printing device, in order to enable the light energy of the optical system to pass through the containing groove and irradiate the light-cured material contained therein, the bottom of the containing groove is made of at least a high light-transmitting material, which includes but is not limited to: polydimethylsiloxane (PDMS), acrylic, Teflon (Teflon), common glass, tempered glass, and other materials. For example, in an exemplary embodiment, the vessel is a glass vessel, and each sidewall of the glass vessel can be further attached with a light absorbing paper (such as a black film, a black paper, or the like) so as to reduce the curing interference of the light curing material due to light scattering during the projection of the optical system. In addition, a transparent flexible film and the like which are convenient to peel off can be laid on the inner bottom surface of the containing groove.

The lifting driving mechanism is also called as a Z-axis driving system in some cases, and comprises a driving unit and a vertical moving unit, wherein the driving unit is used for driving the vertical moving unit so that the vertical moving unit drives the component platform to move up and down. For example, the driving unit is a driving motor. The drive unit is controlled by a control instruction. Wherein the control instructions include: the directional commands for indicating the ascending, descending or stopping of the component platform may even include parameters such as rotation speed/rotation speed acceleration, or torque/torsion. This facilitates precise control of the distance of elevation of the vertical moving unit to achieve precise adjustment of the Z-axis. Here, the vertical moving unit may include a fixed rod having one end fixed to the component platform, and a meshing moving assembly fixed to the other end of the fixed rod, wherein the meshing moving assembly is driven by the driving unit to drive the fixed rod to move vertically, and the meshing moving assembly may be, for example, a limiting moving assembly meshed by a toothed structure, such as a rack. As another example, the vertical moving unit includes: the positioning and moving structure comprises a screw rod and a positioning and moving structure connected with the screw rod in a screwing mode, wherein two ends of the screw rod are connected with a driving unit in a screwing mode, an extending end of the positioning and moving structure is fixedly connected onto a component platform, and the positioning and moving structure can comprise a nut-shaped structure of a ball and a clamping piece.

The Z axis of the lifting driving mechanism is controlled by a control device to issue a control command to control the lifting driving mechanism to perform ascending, descending or stopping operations, in an embodiment, the control device includes an electronic device capable of executing a computer program, which includes but is not limited to: computer equipment, embedded intelligent terminal, etc. The control device comprises a processor, a memory, an interface and other components, wherein the processor is connected with the memory and the interface. The interface is used for connecting the Z-axis mobile unit. The memory may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory also includes a memory controller that can control access to the memory by other components of the device, such as the CPU and peripheral interfaces. The processor is operatively coupled to the memory. More specifically, the processor may execute program instructions stored in the memory to perform operations in the computing device, such as zeroing the component platform in accordance with the zeroing program instructions. As such, the processor may include one or more general purpose microprocessors, one or more application specific processors (ASICs), one or more field programmable logic arrays (FPGAs), or any combination thereof.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a component platform of the present application in an embodiment, fig. 2 is a schematic cross-sectional structural diagram of the component platform of the present application in a locked state in an embodiment, fig. 3 is a schematic cross-sectional structural diagram of the component platform of the present application in an inclined state in an embodiment, as shown in the drawings, in an embodiment, the component platform 1 includes: a member plate 10 and an adjustment mechanism 11.

The component plate 10 is disposed on the lifting driving mechanism 2, the component plate 10 is parallel to the bottom surface of the vessel 3 in the working state, and the solidified layer formed in the vessel 3 is continuously attached to the lifting driving mechanism 2 to form the 3D component 4.

In certain embodiments, the 3D printing apparatus may also be provided with a leveling component (not shown in the figures) for adjusting the level of the component platform working surface. As described above, for the bottom-exposed 3D printing apparatus, the lower surface of the component platform is parallel to the inner bottom surface of the container 3, and if the leveling mechanism corresponding to the container 3 is used to adjust the levelness of the container 3, it is laborious for the container 3 containing the light-curable material to adjust the container 3. Thus, in some instances, it may be relatively easy to adjust the level of the lower surface of the component platform using the leveling assembly.

In a specific application, the leveling assembly may be disposed between the component platform and the lift drive mechanism 2, and may include: the leveling device comprises a leveling detection component, a leveling component and a locking component, wherein the leveling detection component is used for detecting the levelness of the component platform and outputting a leveling detection parameter between the levelness of the current component platform and an adjustment target, so that a control device can control the leveling component to carry out leveling operation on the component platform according to the leveling detection parameter, and after the leveling operation of the component platform is completed, the component platform is locked by the locking component. The control device may be, for example, an industrial personal computer, a Programmable Logic Controller (PLC), a single chip microcomputer, or the like.

In some cases, when the user starts the 3D printing apparatus to print a new 3D object, the control device performs a zeroing operation and then performs layer-by-layer printing according to a layered model of the 3D object. The zeroing operation comprises initializing detection information of the detection unit, controlling the Z-axis moving unit to drive the component platform to move towards the bottom surface of the containing groove 3, acquiring changed detection information from the leveling detection part by the control device when the component platform presses the bottom surface of the containing groove 3, and controlling the Z-axis to stop moving when the real-time acquired detection information reaches a preset detection threshold value so that the component platform is located at an initial position. When the component platform is determined to be located at the initial position, the control device can also drive the component platform to move towards the direction far away from the bottom surface of the containing groove 3 according to the first layer height control Z-axis moving unit of the 3D model, so that the light curing material located between the bottom surface of the containing groove 3 and the component platform is cured through energy radiation of the optical system.

In some embodiments, to avoid excessive disturbance of the photocurable material by the lifting movement of the component platform within the photocurable material, the component platform may be configured in at least one of the following configurations to allow the photocurable material contacted by the component platform to flow away as quickly as possible. One structure is to provide flow guide through holes on the component platform. For example, the flow guide through hole is perpendicular to the component platform body and penetrates through the body. For another example, the flow guide through hole is inclined to the component platform body and penetrates through the component platform body. Similar flow-directing through holes as described above may be distributed throughout the component platform to reduce disturbance of the light curable material during the lift phase. The other structure is that the upper surface of the component platform is an inclined slope surface. For example, in the case of a bottom-exposure 3D printing apparatus, the upper surface of the component stage body used therein is an inclined surface having a thick middle and thin periphery, and the lower surface is parallel to the inner bottom surface of the receiving groove 3, and the light-curable material on the upper side of the component stage flows down along the inclined surface while the component stage is lifted. The above structures may also be combined on a component platform, for example, a diversion trench is disposed on an inclined slope surface, which is not described herein.

The adjusting mechanism 11 is connected between the lifting driving mechanism 2 and the component plate 10, and the adjusting mechanism 11 is used for adjusting the component plate 10 from a parallel state to an inclined state relative to the bottom surface of the containing groove 3 after the printing work is finished so as to remove residual liquid on the component plate 10 and/or the 3D component 4. In an embodiment, the adjusting mechanism 11 is configured to adjust the component board 10 from a parallel state to a tilted state with respect to the bottom surface of the container 3 after being operated by a force, where the tilted state is a state in which the component surface of the component board 10 is not parallel to the inner bottom surface of the container 3, and it can be understood that an extension line of the component surface of the component board 10 and an extension line of the inner bottom surface of the container 3 form an included angle of more than 0 ° and less than 180 ° in space, thereby facilitating to remove the residual liquid photocurable material on the component board 10, the 3D component 4, or the component boards 10 and 3D components 4. Preferably, an extension line of the component surface of the component plate 10 and an extension line of the inner bottom surface of the accommodating groove 3 form an included angle of 90 degrees in space.

In an embodiment, the implementation manner of the adjusting mechanism 11 for adjusting the component plate 10 from the parallel state to the inclined state relative to the bottom surface of the accommodating groove 3 after being operated by a force after the printing operation is finished comprises, in an exemplary embodiment, the adjustment mechanism 11 is configured to adjust the adjustment mechanism to a desired adjustment position after the end of a print job, after the adjusting mechanism 11 is released, the adjusting mechanism is adjusted from a parallel state to an inclined state relative to the bottom surface of the containing groove 3 by the force brought by the gravity center of the adjusting mechanism, in another exemplary embodiment, the adjustment mechanism 11 is adapted to adjust the adjustment mechanism to a desired position after the end of a print job, the adjusting mechanism 11 is adjusted from a parallel state to an inclined state relative to the bottom surface of the accommodating groove 3 by external force, the extraneous force may be from manual operation or from a force driven by a force source such as a drive motor.

Referring to fig. 4, which is an exploded perspective view of a component platform according to an embodiment of the present invention, as shown in the figure, the adjusting mechanism 11 includes a movable block 110 and a locking assembly 111.

The movable block 110 is provided with a hoisting structure 1100 connected with the lifting driving mechanism 2 and a fixing structure 1101 used for fixing the component plate 10, and the hoisting structure is provided with a slideway used for adjusting the position of the movable block 110. In an exemplary embodiment, the fixing structure 1101 includes an engaging surface formed on one side of the movable block 110 engaging the component plate 10, a first screw hole penetrating the movable block 110 from the engaging surface, and a screw or bolt engaged with the screw hole, and accordingly, the component plate 10 is also provided with a second screw hole corresponding to the first screw hole, and the screw or bolt is inserted through the first screw hole of the movable block 110 and screwed into the second screw hole of the component plate 10, thereby mounting the component plate 10 on the movable block 110.

In other embodiments, the component plate 10 may be mounted on the movable block 110 in a non-detachable manner, such as welding or bonding.

In an exemplary embodiment, the locking assembly 111 is engaged with the lifting structure, and the locking assembly 111 has three states relative to the lifting structure.

When the locking assembly 111 is in the locking state, the locking portion of the movable block 110 is locked on the hoisting structure, and the component plate 10 is at a component position parallel to the chassis of the accommodating groove 3, so as to ensure that the component plate 10 is parallel to the bottom surface of the accommodating groove 3 in the working state, and the solidified layer formed in the accommodating groove 3 is continuously attached under the driving of the lifting driving mechanism 2 to form the 3D component 4 in an accumulated manner, which is in the state shown in fig. 2.

When the locking assembly 111 is in a relaxed state, the movable block 110 and the component plate 10 slide along the slideway under the action of force, the component plate 10 is adjusted from a parallel state to an inclined state relative to the chassis of the containing groove 3 so as to remove residual liquid on the component plate 10, and the movable block 110 is still hung on the hoisting structure at the moment, so that the residual liquid on the component plate 10 and the 3D component 4 which are drained can flow into or drop into the containing groove 3 below, and further the photocuring liquid material can be recycled and is in a state shown in fig. 3.

When the locking assembly 111 is in the unlocked state, the locking assembly 111 can slide out along the slide way to take down the movable block 110 from the hoisting structure, so that a worker can take down (generally, shoveling down by using a tool) the 3D member 4 on the member plate 10 for post-processing; the post-processing is, for example, operations such as removing unnecessary support structures of the 3D member 4 or putting the 3D member 4 into a further curing device to enhance curing or cleaning, and the like, in a state as shown in fig. 4.

Referring to fig. 5, which is an exploded sectional view of the component platform of the present application in one embodiment, as shown in the figure, in an exemplary embodiment, the slide 1100 of the hoisting structure includes a locking portion 1102 for engaging with the locking assembly 111, a limiting portion 1103 for limiting the sliding of the locking assembly 111, and a releasing end 1104 for disengaging from the locking assembly 111. In this embodiment, the locking part 1102 is used to cooperate with the locking component 111 to lock the movable block 110 on the hoisting structure.

In this embodiment, a sliding track 1100 section with an arc-shaped structure is disposed between the limiting portion 1103 and the locking portion 1102, so as to ensure that the locking portion 1102 and the limiting portion 1103 at two ends of the limiting portion 1103 are not located on the same plane space, in other words, when the locking assembly 111 is located at the locking portion 1102, the bottom surface of the movable block 110 (i.e. the surface for combining the component board 10) is in a state of being parallel to the chassis of the accommodating groove 3; when the locking assembly 111 is located at the limiting portion 1103, the bottom surface of the movable block 110 is not parallel to the chassis of the accommodating groove 3, so that the component board 10 disposed on the movable block 110 is inclined relative to the bottom surface of the accommodating groove 3.

Referring to fig. 6, which is a schematic structural view of a hoisting structure of the movable block 110 of the present application in an embodiment, as shown in the figure, in this embodiment, the releasing end 1104 is located at an end of the slide way 1100 far from the locking portion 1102, the releasing end 1104 is in an open structure on the movable block 110, and a width of the releasing end 1104 is greater than an outer peripheral diameter of the suspension rod 1110 of the locking assembly 111, so that after the locking assembly 111 is unlocked, the locking assembly 111 can slide out along the slide way 1100 to remove the movable block 110 from the hoisting structure.

In an exemplary embodiment, the locking portion 1102 has a counter bore structure with a first step 11020 and a second step 11021, and the first step 11020 extends along the slide way 1100 to the limiting portion 1103.

Referring to fig. 7, which is a schematic structural diagram of a hoisting structure of the movable block 110 of the present application in another embodiment, as shown in the figure, in this embodiment, a slide 1100 of the hoisting structure includes a locking portion 1102 for engaging with the locking assembly 111, a limiting portion 1103 for limiting the sliding of the locking assembly 111, and a releasing end 1104 for disengaging from the locking assembly 111.

In this embodiment, the release end 1104 is located at an end of the slide 1100 away from the limiting portion 1103, the release end 1104 is in an opening structure on the movable block 110, and a width of the release end 1104 is greater than a peripheral diameter of the suspension rod 1110 of the locking assembly 111, so that after the locking assembly 111 is unlocked, the locking assembly 111 can slide out along the slide 1100 to remove the movable block 110 from the hoisting structure.

In this embodiment, the locking portion 1102 is located between the limiting portion 1103 and the releasing end 1104, and is used for cooperating with the locking component 111 to lock the movable block 110 on the hoisting structure. In this embodiment, the locking portion 1102 has a counter bore structure having a first step 11020 and a second step 11021, and the first step 11020 extends toward the limiting portion 1103 along the slide way 1100.

Referring to fig. 8 to 14, which are schematic views illustrating an operating state of the component platform according to an embodiment of the present disclosure, for convenience of illustration, reference indications of some components are omitted in fig. 8 to 14, and refer to reference indications in fig. 5 and 6 provided in the present disclosure.

When a user needs to mount the adjusting mechanism 11 with the component board 10 fixed thereon on the lifting driving mechanism 2, as shown in fig. 8, in a state where the locking assembly 111 is already mounted on the cantilever of the lifting driving mechanism 2 in advance, the slide 1100 with the movable block 110 with the component board 10 fixed thereon is aligned with the hanging rod 1110 of the locking assembly 111 in the direction indicated by the arrow in fig. 8, and the hanging rod 1110 enters the slide 1100 until reaching the locking portion 1102 in the slide 1100; in the state shown in fig. 9, the adjusting member at the top end of the suspension lever 1110 is screwed, the step lock 1111 is turned in the direction shown by the arrow in fig. 9, the stop step 11110 abuts against and abuts on the first step 11020 of the locking portion 1102, and the locking step 11111 of the step lock 1111 abuts against and abuts on the second step 11021 of the locking portion 1102, and at this time, the adjusting member at the top end of the suspension lever 1110 screws the suspension lever 1110, whereby the movable block 110 is firmly locked to the suspension arm of the lifting drive mechanism 2 by the suspension lever 1110 passing through the suspension arm of the lifting drive mechanism 2 and the hoisting structure of the adjustment mechanism 11.

After the printing is completed, when the user needs to adjust the posture of the adjusting mechanism 11 fixed with the component board 10 to facilitate draining of the liquid light-cured material on the component board 10 and the 3D component 4 on the component board 10, as shown in fig. 10, the user adjusts the adjusting piece at the top end of the suspension rod 1110 to release the contact between the step locking portion 1111 at the bottom end of the suspension rod 1110 and the first step 11020 and the second step 11021 of the locking portion 1102, and moves the step locking portion 1111 at the bottom end of the suspension rod 1110 downward in the direction shown by the arrow in fig. 10, and at this time, as shown in fig. 11, the blocking step 11110 of the step locking portion 1111 at the bottom end of the suspension rod 1110 is disengaged from the first step 11020 of the locking portion 1102 by a certain distance, the locking step 11111 of the step 1111 is also disengaged from the second step 11021 of the locking portion 1102 by a certain distance, and the movable block 110 together with the component board 10 slides along the slide track 1100 to the limiting portion under the force, the stopping step 11110 up to the bottom end of the hanging rod 1110 is stopped by the limiting portion 1103, and is in a state as shown by 12, so that the component plate 10 is adjusted from a parallel state to an inclined state relative to the chassis of the accommodating groove 3 to facilitate the removal of residual liquid on the component plate 10, and the movable block 110 is still hung on the hanging structure, so that the residual liquid on the component plate 10 and the 3D component 4 which are drained can flow into or drip into the accommodating groove 3 below, and the photocuring liquid material can be recycled.

When a user needs to take the adjusting mechanism 11 fixed with the component board 10 off the lifting driving mechanism 2, the adjusting part continues to rotate reversely for a certain distance, the step lock 1111 at the bottom end of the suspension rod 1110 continues to move downwards through the direction shown by the arrow in fig. 13, so that the locking assembly 111 is completely in an unlocked state, the suspension rod 1110 of the locking assembly 111 can slide out along the release end 1104 of the slide 1100 which is an opening, and the movable block 110 is taken off from the hoisting structure through the direction shown by the arrow in fig. 14, so that a worker can take off the 3D component 4 on the component board 10 (generally, the 3D component 4 is shoveled off by a tool) for post-processing; the post-processing is for example removing unnecessary support structures of the 3D element 4 or placing the 3D element 4 in a further curing device to enhance curing or cleaning operations.

Referring to fig. 15, which is a schematic structural view illustrating a hoisting structure of the movable block 110 according to the present application in a further embodiment, as shown in the figure, in an exemplary embodiment, the movable block 110 has an eccentric weight portion 1103, when the locking assembly 111 is in the unlocked state, the movable block 110 and the component plate 10 slide along the slide way 1100 under the gravity of the eccentric weight portion 1103, and the component plate 10 is adjusted from a parallel state to an inclined state relative to the bottom surface of the accommodating groove 3, so as to remove residual liquid on the component plate 10.

In an embodiment, the density or mass of the eccentric weight portion 1103 is greater than that of other portions of the movable block 110, so that the movable block 110 can be tilted due to the gravity of the eccentric weight portion 1103 without being constrained by the locking assembly 111, and the purpose of adjusting the component plate 10 from a parallel state to the bottom surface of the accommodating groove 3 to a tilted state to remove the residual liquid on the component plate 10 is achieved.

In one embodiment, the eccentric weight portion 1103 can be made of a material different from that of the movable block 110, such as a lead material with a larger mass. In another embodiment, the eccentric weight portion 1103 may be made of the same material as the movable block 110, for example, the eccentric weight portion 1103 has a solid structure, and the other portion of the movable block 110 has a hollow structure.

As shown in fig. 5, the locking assembly 111 includes a suspension bar 1110 for passing through the suspension arm of the lifting driving mechanism 2 and the hoisting structure of the adjusting mechanism 11, a step lock 1111 provided at the bottom end of the suspension bar 1110, and an adjusting member provided at the top end of the suspension bar 1110.

In the above-described embodiment, the lock portion 1102 has a counterbore structure having a first step 11020 and a second step 11021, and the first step 11020 extends toward the limiting portion 1103 along the slide way 1100, and accordingly, the step locking head 1111 has a blocking step 11110 corresponding to the first step 11020 and a locking step 11111 corresponding to the second step 11021, as shown, in the locked state of the locking assembly 111, the stop step 11110 of the step lock 1111 abuts against and abuts on the first step 11020 of the locking part 1102, the locking step 11111 of the step locking head 1111 abuts against and abuts on the second step 11021 of the locking part 1102, and at this time, an adjuster at the top end of the boom 1110 screws the boom 1110, whereby the movable block 110 is firmly locked to the boom of the lift drive mechanism 2 by the boom 1110 passing through the boom of the lift drive mechanism 2 and the hoisting structure of the adjustment mechanism 11. In an embodiment, the hanger bar 1110 is a threaded rod that is threadably coupled to the adjustment member.

In an exemplary embodiment, the adjusting member may be manually adjusted or automatically driven by a driving motor, and accordingly, the adjusting member is a manual knob or a handle, i.e., in the state shown in fig. 1 to 3.

The adjusting member is connected to a driving motor through a coupling, a gear, a belt, or a chain transmission, and the adjusting member adjusts the suspension rod 1110 by the driving of the driving motor, in other words, adjusts the locking assembly 111 and the hoisting structure in three states. In an exemplary embodiment, referring to fig. 16, which is a schematic view of an adjusting member in the component platform of the present application in one embodiment, as shown, the adjusting member is connected to a driving motor 5 through, for example, a coupling 51, and the adjusting member is driven by the driving motor 5 to adjust the suspension rod 1110.

In another exemplary embodiment, please refer to fig. 17, which is a schematic diagram of an adjusting member in the component platform of the present application in another embodiment, as shown in the figure, the adjusting member is connected to a driving motor 5 by a belt or a chain transmission, for example, and the adjusting member is driven by the driving motor 5 to adjust the suspension rod 1110, wherein the reference 52 in the figure can be understood as a belt or a chain.

In an exemplary embodiment, please refer to fig. 18 to 21, which are schematic views illustrating an implementation state of an adjusting element in a component platform according to the present application in yet another embodiment, as shown in fig. 18, the adjusting element further includes, for example, a spring 7 and a pressing element 6, wherein the top end of the suspension rod 1110 has a cap portion (not numbered), the spring 7 is sleeved on the suspension rod 1110 and located between the cap portion at the top end of the suspension rod 1110 and the cantilever of the lifting driving mechanism 2, and is used for providing an elastic force to force a blocking step 11110 of a step locking head 1111 at the bottom end of the suspension rod 1110 to abut against and abut against a first step 11020 of the locking portion 1102, and a locking step 11111 of the step locking head abuts and abuts against a second step 11021 of the locking portion 1102.

As shown in fig. 19, the pressing member 6 is disposed on the lifting driving mechanism 2 for pressing down the cap portion at the top end of the suspension lever 1110 when being driven, so that the spring 7 on the suspension lever 1110 is compressed, and the stopping step 11110 of the step locking head 1111 at the bottom end of the suspension lever 1110 is forced to disengage from the first step 11020 of the locking portion 1102 by a certain distance, and the locking step 11111 of the step locking head 1111 also disengages from the second step 11021 of the locking portion 1102 by a certain distance; the movable block 110 and the component plate 10 are forced to slide along the slide track 1100 by the other suspension rod 1110 to the limiting portion 1103 until the blocking step 11110 at the bottom end of the suspension rod 1110 is blocked by the limiting portion 1103 to be in a state shown as 20, so that the component plate 10 is adjusted from a parallel state relative to the chassis of the containing groove 3 to an inclined state to facilitate discharging of residual liquid on the component plate 10, and the movable block 110 is still hung on the hanging structure at the moment, so that the residual liquid on the component plate 10 and the 3D component 4 which are drained can flow into or drop into the containing groove 3 below, and further the photocuring liquid material can be recycled.

When the adjusting mechanism 11 fixed with the component plate 10 needs to be removed from the lifting driving mechanism 2, the top pressing member 6 continues to press the bottom end of the suspension rod 1110, the step lock 1111 continues to move downwards, so that the locking assembly 111 is completely in an unlocked state, the suspension rod 1110 of the locking assembly 111 can slide out along the release end 1104 with the slide 1100 as an opening, and the movable block 110 is removed from the hoisting structure through the direction shown by the arrow in fig. 21, thereby facilitating a worker to remove (generally, to scoop down with a tool) the 3D component 4 on the component plate 10 for post-processing; the post-processing is for example removing unnecessary support structures of the 3D element 4 or placing the 3D element 4 in a further curing device to enhance curing or cleaning operations.

The utility model provides a component platform is through setting up an guiding mechanism between lifting drive mechanism 2 and component board for adjust after print job ends guiding mechanism realizes adjusting the component board to the tilt state so that get rid of by the parallel state in bottom surface that holds the groove relatively the component board and/or raffinate on the 3D component, and then do benefit to the recovery of photocuring material also do benefit to right the aftertreatment process of 3D component.

The present application further provides a 3D printing apparatus, the 3D printing apparatus at least includes: lifting driving mechanism, component platform, appearance groove, optical system.

The containing groove is provided with a light-transmitting bottom; the containing groove is arranged on the containing groove bracket. In an exemplary embodiment, two sides of the receiving groove bracket are respectively provided with a parallel guide rail or a parallel slot for matching with the receiving groove, and correspondingly, two opposite sides of the receiving groove are provided with a clamping strip or a protrusion for placing the parallel guide rail or the parallel slot. Therefore, when the accommodating groove is installed, the clamping strip or the protrusion of the accommodating groove is correspondingly inserted into the parallel guide rail or the parallel clamping groove of the accommodating groove bracket.

In order to ensure that the containing groove can be stably arranged on the containing groove bracket, the containing groove bracket is also used for arranging or disassembling a fastening mechanism of the containing groove. In some embodiments, the fastening mechanism may include a screwing component and a connecting rod or a bolt connected to the screwing component, the connecting rod or the bolt penetrates through the parallel guide rails or the parallel slots of the slot-containing bracket, and the connecting rod or the bolt is driven by the screwing component to tighten or press the distance between the parallel guide rails or the parallel slots, so as to fasten the clamping strips or the protrusions of the slots. In an exemplary embodiment, the fastening mechanism may include a screwing component and a push rod connected to the screwing component, and the push rod is driven by the screwing component to protrude relative to the parallel guide rail or the parallel clamping groove and to prop against a clamping strip or a protrusion of a containing groove disposed in the parallel guide rail or the parallel clamping groove.

In order to ensure the layer thickness uniformity of the solidified layer formed in the containing groove, the containing groove leveling treatment needs to be carried out in the 3D printing equipment before printing or after the 3D printing equipment is assembled, and in some embodiments, the containing groove bracket is further provided with a leveling mechanism for adjusting the levelness of the working surface in the groove holding groove.

In an embodiment, the material of the vessel body includes but is not limited to: glass, plastic, solid resin, stainless steel, etc. Wherein, the capacity of the containing groove depends on the type of the 3D printing device, in order to enable the light energy of the optical system to pass through the containing groove and irradiate the light-cured material contained therein, the bottom of the containing groove is made of at least a high light-transmitting material, which includes but is not limited to: polydimethylsiloxane (PDMS), acrylic, Teflon (Teflon), common glass, tempered glass, and other materials. For example, in an exemplary embodiment, the vessel is a glass vessel, and each sidewall of the glass vessel can be further attached with a light absorbing paper (such as a black film, a black paper, or the like) so as to reduce the curing interference of the light curing material due to light scattering during the projection of the optical system. In addition, a transparent flexible film and the like which are convenient to peel off can be laid on the inner bottom surface of the containing groove.

The lifting driving mechanism is connected with the component platform and is used for controlling the component platform to perform lifting movement in the accommodating groove so as to enable the solidified layers continuously attached to the component platform to be accumulated to form a 3D component object.

In the embodiment, the working principle and the possible implementation manner and structure of the component platform are described with reference to the above description of fig. 1 to 21, that is, various embodiments of the component platform claimed in the present application and modifications or changes that may be made to the above embodiment of fig. 1 to 21 may be applied to the 3D printing apparatus of the present application without departing from the spirit and scope of the present application.

In certain embodiments, the 3D printing apparatus may also be provided with a leveling component (not shown in the figures) for adjusting the level of the component platform working surface. As described above, for the bottom-exposed 3D printing apparatus, the lower surface of the component platform is parallel to the inner bottom surface of the container, and if the leveling mechanism corresponding to the container is used to adjust the levelness of the container, it is laborious for the container containing the photo-curable material to adjust the container. Thus, in some instances, it may be relatively easy to adjust the level of the lower surface of the component platform using the leveling assembly.

In particular applications, the leveling assembly may be disposed between a component platform and a lift drive mechanism, and may include: the leveling device comprises a leveling detection component, a leveling component and a locking component, wherein the leveling detection component is used for detecting the levelness of the component platform and outputting a leveling detection parameter between the levelness of the current component platform and an adjustment target, so that a control device can control the leveling component to carry out leveling operation on the component platform according to the leveling detection parameter, and after the leveling operation of the component platform is completed, the component platform is locked by the locking component. The control device may be, for example, an industrial personal computer, a Programmable Logic Controller (PLC), a single chip microcomputer, or the like.

In some cases, when the user starts the 3D printing apparatus to print a new 3D object, the control device performs a zeroing operation and then performs layer-by-layer printing according to a layered model of the 3D object. The zeroing operation comprises initializing detection information of the detection unit, controlling the Z-axis moving unit to drive the component platform to move towards the bottom surface of the containing groove, acquiring changed detection information from the leveling detection part by the control device when the component platform applies pressure to the bottom surface of the containing groove, and controlling the Z-axis to stop moving when the real-time acquired detection information reaches a preset detection threshold value so that the component platform is located at an initial position. When the component platform is determined to be located at the initial position, the control device can also drive the component platform to move towards the direction far away from the bottom surface of the containing groove according to the first layer height control Z-axis moving unit of the 3D model, so that the light curing material located between the bottom surface of the containing groove and the component platform is cured through energy radiation of the optical system.

In some embodiments, to avoid excessive disturbance of the photocurable material by the lifting movement of the component platform within the photocurable material, the component platform may be configured in at least one of the following configurations to allow the photocurable material contacted by the component platform to flow away as quickly as possible. One structure is to provide flow guide through holes on the component platform. For example, the flow guide through hole is perpendicular to the component platform body and penetrates through the body. For another example, the flow guide through hole is inclined to the component platform body and penetrates through the component platform body. Similar flow-directing through holes as described above may be distributed throughout the component platform to reduce disturbance of the light curable material during the lift phase. The other structure is that the upper surface of the component platform is an inclined slope surface. For example, in a bottom-exposure 3D printing apparatus, the upper surface of the component stage body is formed as an inclined surface having a thick middle and thin periphery, and the lower surface is parallel to the inner bottom surface of the receiving groove, and the light-curable material on the upper side of the component stage flows down along the inclined surface while the component stage is lifted. The above structures may also be combined on a component platform, for example, a diversion trench is disposed on an inclined slope surface, which is not described herein.

In an embodiment, the lifting drive mechanism is also referred to as a Z-axis drive system in some cases, and includes a drive unit and a vertical moving unit, and the drive unit is used for driving the vertical moving unit so that the vertical moving unit drives the component platform to perform lifting movement. For example, the driving unit is a driving motor. The drive unit is controlled by a control instruction. Wherein the control instructions include: the directional commands for indicating the ascending, descending or stopping of the component platform may even include parameters such as rotation speed/rotation speed acceleration, or torque/torsion. This facilitates precise control of the distance of elevation of the vertical moving unit to achieve precise adjustment of the Z-axis. Here, the vertical moving unit may include a fixed rod having one end fixed to the component platform, and a meshing moving assembly fixed to the other end of the fixed rod, wherein the meshing moving assembly is driven by the driving unit to drive the fixed rod to move vertically, and the meshing moving assembly may be, for example, a limiting moving assembly meshed by a toothed structure, such as a rack. As another example, the vertical moving unit includes: the positioning and moving structure comprises a screw rod and a positioning and moving structure connected with the screw rod in a screwing mode, wherein two ends of the screw rod are connected with a driving unit in a screwing mode, an extending end of the positioning and moving structure is fixedly connected onto a component platform, and the positioning and moving structure can comprise a nut-shaped structure of a ball and a clamping piece.

The optical system is used for irradiating the light curing material in the vessel towards the transparent bottom to obtain a patterned cured layer; in an embodiment, the optical system comprises a DLP device or an LCD device.

The bottom surface exposure technique that 3D printing apparatus disclosed in this application adopted. In one embodiment, the optical system is located right below the vessel, and an optical axis of a cone projected by the optical system is perpendicular to the bottom surface of the vessel.

In another embodiment, the optical system is located at one side below the containing groove, a reflecting mirror is arranged on a light path projected by the optical system, and an optical axis of a cone projected by the optical system is reflected to be perpendicular to the bottom surface of the containing groove by the reflecting mirror.

The optical system is positioned on one side below the containing groove, a reflecting mirror is arranged on a light path projected by the optical system, and the optical axis of the cone projected by the optical system is reflected to be vertical to the bottom surface of the containing groove through the reflecting mirror. In this embodiment, due to the requirements of the structural design and the component layout of the 3D printing apparatus, the optical system is disposed on one side of the projection range of the receiving groove mounting structure, for example, one of the front side, the rear side, the left side or the right side of the projection range of the receiving groove mounting structure, and correspondingly, the optical axis of the projected view cone of the optical system is parallel to the bottom surface of the receiving groove, and therefore, on the optical path, a reflecting mirror with 45 ° refraction is disposed to refract the optical path of the projected view cone of the optical system to be perpendicular to the bottom surface of the receiving groove.

The bottom-exposure-based 3D printing apparatus may be, for example, a bottom-exposure DLP (Digital light processing) apparatus or a bottom-exposure LCD (Liquid Crystal Display) apparatus.

For the LCD device with bottom exposure, the optical system is a 3D printing device including an LCD screen (LCD panel), a backlight source, a focusing lens, a fresnel lens, and a polarizing film, and in an exemplary illustration, the LCD device with bottom exposure operates in a manner that the backlight source penetrates through a condenser lens to make the light source uniformly distributed, and the fresnel lens makes the light vertically irradiate the LCD screen. The LCD screen is provided with a polarizing film on both sides, the polarizing film is the imaging base of the liquid crystal display, the imaging display of the LCD screen is transparent, and images can be irradiated on the light-cured resin through the LCD screen through the light-transmitting bottom of the container. The thin resin liquid between the component platform and the bottom film is cured under the light-transmitting irradiation of the LCD screen, the component platform lifts up the cured part to allow the liquid resin to be replenished, the component platform descends again, and the thin layer between the component platform and the bottom film is exposed again. In an exemplary embodiment, the resolution of the LCD screen is, for example, 1280 × 768 pixels, such as a 12 inch display screen with a dot matrix accuracy of 0.16 × 0.16 mm. That is to say the dimensional accuracy of the product formation imaged through the LCD screen can reach 0.16 mm. In different embodiments, the selection of a specific LCD screen may have different specifications according to actual requirements.

To sum up, the 3D printing apparatus that the component platform of this application was suitable for is through setting up an guiding mechanism between lift actuating mechanism and component board for adjust after print job finishes guiding mechanism realizes adjusting the component board to the tilt state so as to be favorable to getting rid of by the parallel state in bottom surface of holding the groove relatively the component board and/or raffinate on the 3D component, and then do benefit to the recovery of photocuring material and also do benefit to right the aftertreatment process of 3D component.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. A component platform applied to a 3D printing device comprising a lifting driving mechanism and a containing groove, is characterized by comprising:

the component plate is parallel to the bottom surface of the containing groove in a working state, and is driven by the lifting driving mechanism to continuously adhere to the curing layer formed in the containing groove so as to form a 3D component in an accumulated mode; and

and the adjusting mechanism is connected between the lifting driving mechanism and the component plate and is used for adjusting the component plate to be in an inclined state from a parallel state relative to the bottom surface of the containing groove after the printing work is finished so as to discharge residual liquid on the component plate and/or the 3D component.

2. The component platform of claim 1, wherein the adjustment mechanism comprises:

the movable block is provided with a hoisting structure connected with the lifting driving mechanism and a fixing structure used for fixing the component plate, and the hoisting structure is provided with a slideway used for adjusting the posture of the movable block;

the locking assembly is matched with the hoisting structure; wherein the content of the first and second substances,

when the locking assembly is in a locking state, the locking part of the movable block is locked on the hoisting structure, and the component plate is in a component position parallel to the chassis of the accommodating groove;

when the locking assembly is in a relaxed state, the movable block and the component plate slide along the slideway under the action of stress, and the component plate is adjusted from a parallel state relative to the chassis of the containing groove to an inclined state so as to be beneficial to discharging residual liquid on the component plate;

when the locking assembly is in an unlocking state, the locking assembly slides out along the slide way so as to take down the movable block from the hoisting structure.

3. The component platform of claim 2, wherein the movable block has an eccentric weight, and wherein the movable block with the component plate slides along the slideway under the weight of the eccentric weight when the locking assembly is in the relaxed state.

4. The component platform of claim 2, wherein the slideway of the hoisting structure comprises a locking portion, a release end remote from the locking portion, and a limiting portion located between the locking portion and the release end, the limiting portion being not on the same planar space as the locking portion.

5. The component platform of claim 2, wherein the slide of the movable block comprises a stop portion, a release end distal from the stop portion, and a lock portion between the stop portion and the release end, the stop portion and the lock portion not being in the same planar space.

6. The component platform of claim 4 or 5, wherein the locking portion and the retaining portion of the slideway are arcuate.

7. The component platform as claimed in claim 4 or 5, wherein the locking portion is a counter-bore structure having a first step and a second step, and the first step extends along the slide, and the locking assembly includes a boom, a step lock provided at a bottom end of the boom for corresponding to the counter-bore structure, and an adjuster provided at a top end of the boom, the step lock having a blocking step corresponding to the first step and a locking step corresponding to the second step.

8. The component platform of claim 7, wherein a width of the curb portion of the slide is less than a width of the stop step.

9. The component platform of claim 7, wherein the boom is a threaded rod threadably connected to the adjustment member.

10. The component platform of claim 7, wherein the adjustment is a manual knob or handle.

11. The component platform of claim 7, wherein the adjustment member is coupled to the drive motor via a coupling, gear, belt, or chain drive.

12. The component platform of claim 7, wherein the boom is sleeved with a telescopic spring, and the lifting driving mechanism is provided with a jacking portion for jacking the top end of the boom.

13. A3D printing apparatus, comprising:

a vessel having a light-transmitting bottom;

an optical system for irradiating the photo-curable material in the vessel toward the light-transmissive bottom to obtain a patterned cured layer;

the component platform of any one of claims 1 to 12; and

and the lifting driving mechanism is connected with the component platform and is used for controlling the component platform to perform lifting movement in the accommodating groove so as to enable the solidified layers continuously attached to the component platform to be accumulated to form a 3D component object.

14. The 3D printing device according to claim 13, wherein the pocket is provided on a pocket support.

15. The 3D printing device according to claim 13, wherein the optical system comprises a DLP device or an LCD device.

16. The 3D printing apparatus according to claim 13, wherein the optical system is located directly below the vessel, and an optical axis of a viewing cone projected by the optical system is perpendicular to a bottom surface of the vessel.

17. The 3D printing apparatus according to claim 13, wherein the optical system is located at a side below the vessel, and a mirror is disposed on a light path projected by the optical system, and an optical axis of the viewing cone projected by the optical system is reflected by the mirror to be perpendicular to a bottom surface of the vessel.