WO2021128882A1 - 一种光固化3d打印机的平台调整机构和光固化3d打印机 - Google Patents

一种光固化3d打印机的平台调整机构和光固化3d打印机 Download PDF

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Publication number
WO2021128882A1
WO2021128882A1 PCT/CN2020/110122 CN2020110122W WO2021128882A1 WO 2021128882 A1 WO2021128882 A1 WO 2021128882A1 CN 2020110122 W CN2020110122 W CN 2020110122W WO 2021128882 A1 WO2021128882 A1 WO 2021128882A1
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WO
WIPO (PCT)
Prior art keywords
platform
positioning
curing
light
plate
Prior art date
Application number
PCT/CN2020/110122
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English (en)
French (fr)
Inventor
洪英盛
张胜哲
Original Assignee
深圳市智能派科技有限公司
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Publication of WO2021128882A1 publication Critical patent/WO2021128882A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/245—Platforms or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor

Definitions

  • the invention relates to the technical field of light-curing 3D printers, in particular to a platform adjustment mechanism of a light-curing 3D printer and a light-curing 3D printer.
  • the light-curing 3D printer irradiates the liquid light-curing resin with ultraviolet light or other light sources in a specific wavelength range and initiates a photochemical reaction, so that the light-curing resin in the area irradiated by the light source is cured and molded from the liquid, and the object to be molded can be obtained after curing layer by layer.
  • the structure of a light-curing 3D printer generally includes a platform lifting mechanism, a molding platform, a resin tank, a display screen, a light source, etc.
  • the light source forms a transmission area to be cured at the bottom of the resin tank through the display screen, which is located on the molding surface of the molding platform or the bottom of the cured layer.
  • the liquid resin between the bottom of the resin tank is cured and formed in the transmission area.
  • the cured layer that is formed first needs to be reliably bonded to the forming surface of the forming platform. This requires that the forming platform needs to be adjusted accurately before printing, so that the forming surface of the forming platform and the resin tank Keep the bottom surfaces parallel and have proper spacing.
  • the molding platform will be lifted and lowered in the resin tank under the drive of the platform lifting mechanism, so that the cured layer is separated from the bottom surface of the resin tank, while leaving a space between the cured layer and the bottom surface of the resin tank.
  • the height of the next layer of pre-cured resin layer so that the liquid resin fills into the gap between the cured layer and the bottom of the resin tank, and prepares for the next layer of curing.
  • the height positioning of each cured layer needs to ensure high accuracy.
  • the typical lifting mechanism of the forming platform generally consists of a motor, a screw, a screw nut, a linear guide, a guide rail slider, a lifting cantilever, and a forming platform.
  • the linear guide and the screw are arranged in parallel, and the forming platform and the lifting cantilever can be Detachable and fixed connection.
  • the motor drives the screw rod to rotate
  • the screw nut matched with the screw rod is fixed on the lifting cantilever
  • the lifting cantilever is fixedly connected with the guide rail slider
  • the guide rail slider is slidingly connected with the linear guide rail
  • the screw nut connects the screw rod
  • the rotary motion is converted to linear motion and drives the lifting cantilever to move linearly, so that the forming platform moves up and down along the linear guide rail.
  • the adjustment mechanism of a typical forming platform uses multiple leveling screws to level the forming platform, but the process of adjusting multiple leveling screws in turn for leveling is complicated and often requires repeated adjustments to obtain a better leveling effect. , In some cases, it can't even be leveled completely, which is inconvenient for users to operate, and may affect the final printing effect.
  • the present invention provides a platform adjustment mechanism of a light-curing 3D printer, which aims to solve the above-mentioned problems.
  • a platform adjustment mechanism for a light-curing 3D printer including: it is used in a light-curing 3D printer, the light-curing 3D printer includes a resin tank, and the platform mechanism includes: A base plate, the resin tank is installed on the base plate; a molding platform plate, the plane of the molding platform plate facing the resin tank is a molding surface, and the molding surface is connected to the resin tank installed on the base plate The bottom surface is arranged in parallel; the vertical moving assembly is connected with the forming platform plate to control the forming platform plate to move in the vertical direction; the connecting piece connects the vertical moving part and the forming platform plate; platform adjustment Assembly; set between the connecting piece and the molding platform plate, used to adjust the molding platform plate and the bottom surface of the resin tank to be parallel; wherein, the platform adjustment assembly includes a positioning ball head, a positioning pressing part , A tightening piece and a connecting rod, the connecting piece is provided with a first groove portion facing the side surface of
  • the platform adjustment assembly further includes a first elastic member disposed between the bottom surface of the first groove portion and the positioning ball head. The element applies elastic force to the positioning ball head in a direction toward the base plate.
  • the first elastic member is a spring.
  • a second groove portion is provided on the side of the connecting piece, and the vertical moving assembly is inserted into the second groove portion, and the fixing piece is used to hold the The vertical moving component is locked on the connecting piece, and the vertical moving component drives the connecting piece to move synchronously.
  • the vertical moving part includes a positioning plate, a sliding block, a lifting cantilever, a screw rod and a motor;
  • the positioning plate is arranged on the base plate, and the A linear guide rail is arranged on the positioning plate;
  • the sliding block is slidably arranged on the linear guide;
  • the lifting cantilever is fixedly installed on the sliding block, and one end of the lifting cantilever is inserted into the second groove part
  • the screw rod passes through the lifting cantilever;
  • the motor is connected to the screw rod in transmission, and is used to drive the lifting cantilever to slide along the linear guide rail.
  • the vertical movement assembly further includes a screw nut adjustment assembly, the screw nut assembly is connected to the screw drive, and the screw nut assembly is fixedly arranged at The lifting cantilever.
  • the screw nut adjustment assembly includes: a nut body, a second elastic member, and a clamp member; the nut body includes a fixing portion and an adjustment portion, the adjustment portion Is a cylindrical ring connected to the fixing portion at one end, and a plurality of openings are provided on the cylindrical side of the adjustment portion; the clamp member is sleeved on the adjustment portion, and the second elastic member is sleeved on the adjustment portion.
  • the clamp member; the fixing portion is fixed on the lifting cantilever by a plurality of screws.
  • the side surface of the end of the adjustment portion away from the fixing portion protrudes outwardly with a flange portion, and the flange portion abuts against the inner surface of the clamp member.
  • a light-curing 3D printer including the above-mentioned platform adjustment mechanism of the light-curing 3D printer.
  • the technical solutions provided by the embodiments of the present application may include the following beneficial effects:
  • the present application designs a platform adjustment mechanism for a light-curing 3D printer and a light-curing 3D printer.
  • the positioning ball head, the positioning pressing part and the tightening part are arranged to make the shape
  • the platform board is easy to level, which ensures that the molding platform board is parallel to the bottom surface of the resin tank, improves the accuracy of the height positioning of each layer of the solidified layer in the 3D printing process, and also improves the surface accuracy of the printed part; by reducing the motor
  • the transmission error between the screw rod and the screw rod improves the transmission accuracy of the platform lifting mechanism and ensures the stability of the transmission accuracy.
  • Figure 1 is a schematic structural diagram of a platform mechanism according to an embodiment of the present invention.
  • Figure 2 is a schematic structural view of a platform mechanism according to another embodiment of the present invention.
  • Figure 3 is a schematic structural diagram from another perspective of the platform mechanism according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a partial structure of a platform mechanism according to an embodiment of the present invention.
  • Figure 5 is an exploded view of the embodiment of Figure 4.
  • Figure 6 is a cross-sectional view of the embodiment of Figure 4.
  • Fig. 7 is a schematic structural diagram of a screw nut adjustment assembly according to an embodiment of the present invention.
  • Fig. 8 is an exploded view of the embodiment of Fig. 7.
  • the present invention discloses a platform adjustment mechanism for a light-curing 3D printer.
  • the platform mechanism is used for a light-curing 3D printer.
  • the light-curing 3D printer includes a resin tank 10.
  • the platform adjustment mechanism of the light-curing 3D printer of the present application includes: a base plate 20, a molding platform plate 30, a vertical movement assembly 40, a connector 50 and a platform adjustment assembly 60.
  • the resin tank 10 is installed on the base plate 20, the plane of the molding platform plate 30 facing the resin tank 10 is the molding surface of the product, and the molding surface is parallel to the bottom surface of the resin tank installed on the base plate 20.
  • the vertical moving assembly 40 is in transmission connection with the forming platform plate 30 so that the vertical moving assembly 40 drives the forming platform plate 30 to move up and down.
  • the vertical movement assembly 40 is used to control the movement of the forming platform plate 30 in the vertical direction.
  • the connecting member 50 connects the vertical moving member and the forming platform plate 30.
  • the platform adjustment assembly 60 is disposed between the molding platform plate 30 and the connecting member 50, and is used to adjust the molding platform plate 30 to be parallel to the bottom surface of the resin tank installed on the base plate 20.
  • the platform adjustment assembly 60 includes a positioning ball 61, a positioning and pressing part 62, a tightening part 63 and a connecting rod 64.
  • the connecting part 50 is provided on the side facing the forming platform plate 30.
  • a groove portion 51 that is, the lower bottom surface of the connecting member 50 is provided with a first groove portion 51, the positioning ball 61 and the positioning and pressing member 62 are both arranged in the first groove portion 51, and the positioning and pressing member 62 is set.
  • a through hole 53 is also provided on the connecting member 50, and the through hole 53 is in communication with the first groove portion 51.
  • the fixing member 63 passes through the through hole 53 to compress the positioning and pressing member 62, and then the positioning and pressing member 62 is deformed to compress the positioning ball 61, so that the positioning ball 61 is fixed in position under the action of friction.
  • the first groove portion 51 is a cylindrical groove
  • the through hole 53 is provided on the cylindrical side surface of the cylindrical groove, and presses the positioning and pressing member 62 from the side, thereby fixing the positioning ball 61 .
  • the positioning and pressing part 62 is a deformable part, that is, the positioning and pressing part 62 is deformed under the action of an external force.
  • the positioning and pressing part 62 presses the positioning ball 61 after the deformation, so that the positioning ball 61 is pressed in the positioning Fixed under the action of the piece 62.
  • the positioning and pressing member 62 may be a cylindrical ring structure made of a flexible material, and specifically may be a rubber material or the like. In some other embodiments, the positioning and pressing member 62 also has an opening 621 opened along the axial direction of the cylinder. The opening 621 is arranged so that the positioning and pressing member 62 can be deformed under the action of an external force, so the positioning and pressing member 62 is still It can be a rigid material, such as metal, hard plastic, etc.
  • the positioning ball head 61 and the forming platform plate 30 are connected through the connecting rod 64, and the positioning ball head 61 can perform appropriate rotation and appropriate vertical movement in the first groove portion 51.
  • the molding surface of the molding platform plate is close to the bottom surface of the resin tank, so as to achieve precise leveling, thereby driving the molding platform plate 30 to rotate, so as to adjust the molding surface of the molding platform plate 30 and install it on the base.
  • the bottom surface of the resin tank 10 on the board 20 is arranged in parallel, which improves the accuracy of the height positioning of each cured layer in the 3D printing process, and also improves the surface accuracy of the printed part.
  • the vertical moving assembly 40 drives the forming platform plate 30 to move to the lower base plate 20.
  • the forming platform plate 30 abuts against the base plate 20 (ie the bottom surface of the resin tank), and acts on the positioning ball 61
  • the molding platform 30 will be adjusted to be parallel to the bottom surface of the resin tank.
  • the number of through holes and fastening members 63 can be set to multiple, and the specific number is not limited here, and can be set according to actual conditions.
  • the tightening piece 63 may be a pin with threads, and the tightening piece 63 is fixed in the through hole by a screw fixing method.
  • the platform adjustment assembly 60 further includes a first elastic member 65, which is disposed between the bottom surface of the first groove portion 51 on the connecting member 50 and the positioning ball 61.
  • the first elastic member 65 exerts an elastic force on the positioning ball head 61 in a direction toward the base plate 20.
  • the elastic force of the first elastic member 65 can squeeze the positioning ball head 61, so that the positioning ball head can move vertically in the first groove portion, so that the forming platform connected with the positioning ball head 61
  • the plate 30 is automatically attached to the plane where the bottom surface of the resin tank 10 is located, which simplifies the adjustment process and makes the adjustment result more accurate.
  • the first elastic member 65 is configured as a spring.
  • a second groove portion 52 is provided on one side of the connecting member 50, the vertical moving member is inserted into the second groove portion 52, and the vertical moving assembly 40 is fixed to the second groove portion 52 by a fixing member 70 On the connecting piece 50, the vertical moving piece drives the connecting piece 50 to move up and down synchronously.
  • the vertical moving assembly 40 includes a positioning plate 41, a sliding block 42, a lifting cantilever 43, a screw rod 44 and a motor 45.
  • the positioning plate 41 is disposed on the base plate 20
  • a linear guide rail 411 is disposed on the positioning plate 41
  • the slider 42 is slidably disposed on the linear guide rail 411.
  • the lifting cantilever 43 is fixedly installed on the sliding block 42, and one end of the lifting cantilever wall is inserted into the second groove portion 52, and the lifting cantilever 43 is fixed by the fixing member 70.
  • the screw rod 44 passes through the lifting cantilever 43, and the motor 45 is in transmission connection with the screw rod 44, and is used to drive the lifting cantilever 43 to slide along the linear guide 411.
  • the motor 45 is mounted on the base plate 20, and can also be fixed together with the positioning plate 41.
  • the screw 44 of the motor 45 is the rotating shaft of the motor 45, that is to say, the motor 45 and the screw 44 are an integrated structure, and the screw 44 directly serves as the rotating shaft of the motor 45, which improves the coaxiality and avoids The transmission error caused by the radial runout of the screw rod 44 also simplifies the installation structure.
  • the internal structure of the motor 45 in this embodiment is improved.
  • the buffer parts commonly used in the market are removed between the rotating shaft and the housing of the motor 45, so that it has greater axial rigidity and can avoid axial displacement when bearing axial force. Therefore, the positioning error of the forming platform plate 30 due to the change of the axial resistance can be avoided.
  • the vertical movement assembly 40 further includes a screw nut adjustment assembly 46, the screw nut adjustment assembly 46 is drivingly connected to the screw 44, and the screw nut adjustment assembly 46 is fixedly installed on the lifting cantilever 43 .
  • the screw rod drives the lifting cantilever 43 to move up and down.
  • the screw nut adjustment assembly 46 includes a nut main body 461, a second elastic member 462 and a clamp member 463.
  • the lifting cantilever 43 is provided with a third groove portion 431 of the screw nut adjustment assembly 46.
  • the nut main body 461 includes a fixing portion 4611 and an adjustment portion 4612.
  • the adjustment portion 4612 is a cylindrical ring, and the screw 44 passes through the fixing portion 4611 and
  • the adjusting portion 4612 is provided with a plurality of openings (not marked in the figure) on the fixing portion 4611, and the fixing portion 4611 is fixed in the third groove portion 431 on the lifting cantilever 43 by a plurality of screws.
  • a plurality of openings 46121 are uniformly arranged on the cylindrical side surface of the adjusting portion 4612.
  • the opening 46121 increases the elasticity of the adjusting portion 4612, so that the opening 46121 can be deformed under the action of external force.
  • the clamp member 463 is sleeved on the adjusting portion 4612, the second elastic member 462 is sleeved on the clamp member 463, and the fixing portion 4611 is close to the opening of the third groove portion 431 during installation.
  • the clamp member 463 can move relative to the adjustment portion 4612. Under the action of the elastic force of the second elastic member 462, the clamp member 463 squeezes the adjustment portion 4612, thereby clamping and passing through the adjustment portion 4612.
  • the screw rod 44 in the portion 4612 enables the inner transmission surface of the nut main body 461 to always be in close contact with the transmission surface of the screw rod 44, thereby greatly reducing the fit gap and improving the accuracy of linear motion.
  • the side surface of the end of the adjusting portion 4612 away from the fixing portion 4611 protrudes outward from the flange portion 46122, and the flange portion 46122 abuts against the inner surface of the clamp member 463.
  • the adjusting portion 4612 will be worn during use.
  • the flange portion 46122 is added to the port of the adjusting portion 4612, which increases the deformation of the adjusting portion 4612.
  • the flange portion 46122 plays a role in compensating the fitting gap caused by wear. , Extend the service life of the nut body 461.
  • the material of the nut main body 461 is a metal material, or a plastic material with good wear resistance.
  • this application also protects a light-curing 3D printer, which includes the above-mentioned platform mechanism and a body 80.
  • the base plate 20 is installed on the main body 80
  • the resin tank 10 is installed on the base plate 20
  • the vertical moving assembly 40 is installed on the base plate 20.
  • other parts such as a control platform, are also provided inside the fuselage 80.

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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Abstract

一种光固化3D打印机的平台调整机构和光固化3D打印机，该调整机构包括：底座板(20)，树脂槽(10)安装于底座板(20)上；成型平台板(30)，成型平台板(30)朝向树脂槽(10)的平面为成型面；竖直移动组件(40)，与成型平台板(30)连接，控制成型平台板(30)在竖直方向上移动；连接件(50)，连接竖直移动件(40)和成型平台板(30)；平台调整组件(60)；设置于连接件(50)与成型平台板(30)之间，用于调整成型平台板(30)与树脂槽(10)的底面平行；平台调整组件(60)包括定位球头(61)、定位压紧件(62)、紧定件(63)和连接杆(64)，连接件(50)朝向成型平台板(30)的侧面设有第一凹槽部(51)，定位球头(61)和定位压紧件(62)均设于第一凹槽部(51)内；定位压紧件(62)套设于定位球头(61)外，连接杆(64)连接定位球头(61)和成型平台板(30)，连接件(50)上设有通孔(53)，紧定件(63)穿过通孔(53)压紧定位压紧件(62)从而压紧定位球头(61)。所述调平机构提高了3D打印过程中每一层固化层的高度定位的精度，提升了被打印件的表面精度；并通过减小电机和丝杆之间的传动误差提高了平台升降机构的传动精度，保证了传动精度的稳定性。

Description

一种光固化3D打印机的平台调整机构和光固化3D打印机 技术领域
本发明涉及光固化3D打印机技术领域，尤其涉及一种光固化3D打印机的平台调整机构和光固化3D打印机。
 背景技术
光固化3D打印机通过利用紫外光或其他特定波长范围的光源照射液态光固化树脂并引发光化学反应，使被光源照射区域的光固化树脂由液态固化成型，逐层固化后即可得到待成型物体。
光固化3D打印机的结构一般包括平台升降机构、成型平台、树脂槽、显示屏、光源等，光源透过显示屏在树脂槽底部形成待固化的透射区域，位于成型平台成型面或已固化层底部与树脂槽底部之间的液态树脂在透射区域固化成型。在逐层成型三维物体的过程中，首先成型的固化层需要可靠粘结在成型平台的成型面上，这要求在开始打印之前，需要精确地调节成型平台，使得成型平台的成型面与树脂槽底面保持平行且具有合适的间距。另外，每一层固化完成后，成型平台会在平台升降机构的带动下，在树脂槽内进行升降动作，使得已固化层脱离树脂槽底面，同时在已固化层和树脂槽底面之间留出预固化成型的下一层树脂层的高度，以便液态树脂填充进入已固化层与树脂槽底部之间的间隙，为下一层固化做准备，其中为了使打印物体获得较好的表面成型质量，每一层固化层的高度定位需要保证较高的精度。
目前市场上，典型的成型平台升降机构一般由电机、丝杆、丝杆螺母、直线导轨、导轨滑块、升降悬臂、成型平台组成，其中直线导轨与丝杆平行布置，成型平台与升降悬臂可拆卸地固定连接。正常工作时，电机驱动丝杆旋转，与丝杆配合的丝杆螺母固定于升降悬臂上，升降悬臂与导轨滑块固定连接，导轨滑块与直线导轨滑动连接，进而丝杆螺母将丝杆的旋转运动转换为直线运动并带动升降悬臂直线运动，从而使成型平台沿直线导轨进行升降运动。典型的成型平台的调节机构，通过多个调平螺钉对成型平台进行调平操作，但是依次调整多个调平螺钉进行调平的过程复杂，且经常需要反复调整才能获得较好的调平效果，某些情况下甚至无法完全调平，不便于用户操作，且有可能影响最终打印效果。
 技术解决方案
本发明提供了一种光固化3D打印机的平台调整机构，旨在解决上述问题。
根据本申请实施例的第一方面，提供了一种光固化3D打印机的平台调整机构，包括：其用于光固化3D打印机中，所述光固化3D打印机包括树脂槽，所述平台机构包括：底座板，所述树脂槽安装于所述底座板上；成型平台板，所述成型平台板朝向所述树脂槽的平面为成型面，所述成型面与安装于所述底座板上的树脂槽的底面平行设置；竖直移动组件，与所述成型平台板连接，控制所述成型平台板在竖直方向上移动；连接件，连接所述竖直移动件和所述成型平台板；平台调整组件；设置于所述连接件与所述成型平台板之间，用于调整所述成型平台板与所述树脂槽的底面平行；其中，所述平台调整组件包括定位球头、定位压紧件、紧定件和连接杆，所述连接件朝向所述成型平台板的侧面设置有第一凹槽部，所述定位球头和所述定位压紧件均设置于所述第一凹槽部内；所述定位压紧件套设于所述定位球头外，所述连接杆连接所述定位球头和所述成型平台板，所述连接件上还设有通孔，所述紧定件从所述通孔中穿过，压紧所述定位压紧件，所述定位压紧件产生形变从而压紧所述定位球头；所述定位压紧件为可变形件。
在本发明的光固化3D打印机的平台调整机构中，所述平台调整组件还包括设置于所述第一凹槽部底面与所述定位球头之间的第一弹性件，所述第一弹性件对所述定位球头施加方向朝向所述底座板的弹力。
在本发明的光固化3D打印机的平台调整机构中，所述第一弹性件为弹簧。
在本发明的光固化3D打印机的平台调整机构中，所述连接件的侧面上设置有第二凹槽部，所述竖直移动组件插入所述第二凹槽部内，通过一固定件将所述竖直移动组件锁紧于所述连接件上，所述竖直移动组件带动所述连接件同步运动。
在本发明的光固化3D打印机的平台调整机构中，所述竖直移动件包括定位板、滑块、升降悬臂、丝杆和电机；所述定位板设置于所述底座板上，且所述定位板上设置有直线导轨；所述滑块在所述直线导轨上可滑动设置；所述升降悬臂固定安装于所述滑块上，且所述升降悬臂的一端插入所述第二凹槽部内；所述丝杆穿设于所述升降悬臂上；所述电机与所述丝杆传动连接，用于带动所述升降悬臂沿着所述直线导轨滑动。
在本发明的光固化3D打印机的平台调整机构中，竖直移动组件还包括丝杆螺母调节组件，所述丝杆螺母组件与所述丝杆传动连接，且所述丝杆螺母组件固定设置于所述升降悬臂上。
在本发明的光固化3D打印机的平台调整机构中，所述丝杆螺母调节组件包括：螺母主体、第二弹性件和卡箍件，所述螺母主体包括固定部和调节部，所述调节部为一端与所述固定部连接的圆柱环，所述调节部的圆柱侧面设置有多条开口部；所述卡箍件套设于所述调节部上，所述第二弹性件套设于所述卡箍件上；所述固定部通过多个螺钉固定于所述升降悬臂上。
在本发明的光固化3D打印机的平台调整机构中，所述调节部远离所述固定部的一端的侧面向外凸出凸缘部，所述凸缘部与所述卡箍件的内侧面抵合。
根据本申请实施例的第二方面，提供了一种光固化3D打印机，包括上述的光固化3D打印机的平台调整机构。
 有益效果
本申请实施例提供的技术方案可以包括以下有益效果：本申请设计了一种光固化3D打印机的平台调整机构和光固化3D打印机，通过设置定位球头、定位压紧件和紧定件，使得成型平台板方便调平，确保了成型平台板与树脂槽的底面平行，提高了3D打印过程中每一层固化层的高度定位的精度，也就提升了被打印件的表面精度；通过减小电机和丝杆之间的传动误差从而提高了平台升降机构的传动精度，保证了传动精度的稳定性。
 附图说明
为了更清楚地说明本发明实施例技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图   1是本发明一个实施例的平台机构的结构示意图；
图   2是本发明另一实施例的平台机构的一视角结构示意图；
图   3是本发明另一实施例的平台机构的又一视角结构示意图；
图4是本发明实施例的平台机构的部分结构示意图；
图5是图4实施例的爆炸图；
图6是图4实施例的剖面图；
图7是本发明实施例的丝杆螺母调节组件的结构示意图；
图8是图7实施例的爆炸图。
标号说明:
10、树脂槽；20、底座板；30、成型平台板；40、竖直移动组件；41、定位板；411、直线导轨；42、滑块；43、升降悬臂；431、第三凹槽部；44、丝杆；45、电机；46、丝杆螺母调节组件；461、螺母主体；4611、固定部； 4612、调节部；46121、开口部；46122、凸缘部；462、第二弹性件；463、卡箍件；50、连接件；51、第一凹槽部；52、第二凹槽部；53、通孔；60、平台调整组件；61、定位球头；62、定位压紧件；621、开口；63、紧定件；64、连接杆；65、第一弹性件；70、固定件；80、机身。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
还应当理解，在此本发明说明书中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本发明。如在本发明说明书和所附权利要求书中所使用的那样，除非上下文清楚地指明其它情况，否则单数形式的“一”、“一个”及“该”意在包括复数形式。
还应当进一步理解，在本发明说明书和所附权利要求书中使用的术语“和/ 或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。
请参照图1-图3所示，本发明公开了一种光固化3D打印机的平台调整机构，该平台机构用于光固化3D打印机，光固化3D打印机包括树脂槽10。本申请的光固化3D打印机的平台调整机构包括：底座板20、成型平台板30、竖直移动组件40、连接件50和平台调整组件60。树脂槽10安装于底座板20上，成型平台板30朝向树脂槽10的平面为产品的成型面，成型面与安装在底座板20上的树脂槽的底面平行设置。竖直移动组件40与成型平台板30传动连接，使得竖直移动组件40带动成型平台板30上下移动。竖直移动组件40用于控制成型平台板30在竖直方向上移动。连接件50连接竖直移动件和成型平台板30。平台调整组件60设置于成型平台板30与连接件50之间，其用于调整成型平台板30与安装于底座板20上的树脂槽的底面平行。
请参照图4-图6所示，平台调整组件60包括定位球头61、定位压紧件62、紧定件63和连接杆64，在连接件50朝向成型平台板30的侧面上设置有第一凹槽部51，也就是连接件50的下底面设置有第一凹槽部51，定位球头61和定位压紧件62都设置在第一凹槽部51内，定位压紧件62套设于定位球头61外。在连接件50上还设有通孔53，该通孔53与第一凹槽部51连通。紧定件63从通孔53中穿过，压紧定位压紧件62，随后定位压紧件62产生形变从而压紧定位球头61，使得定位球头61在摩擦力的作用下固定位置。在本实施例中，第一凹槽部51为圆柱形的凹槽，通孔53设置在圆柱形凹槽的圆柱侧面上，从侧面压住定位压紧件62，从而将定位球头61固定。定位压紧件62为可变形件，即定位压紧件62在外力的作用下会发生形变，定位压紧件62在产生形变后压紧定位球头61，使得定位球头61在定位压紧件62的作用下固定。定位压紧件62可以为柔性材质的圆柱环结构，具体可以为橡胶材质等。在一些其它实施例中，在定位压紧件62上还具有沿圆柱轴向开设的开口621，开口621的设置使得定位压紧件62在外力的作用下可以变形，因此定位压紧件62还可以为刚性材质，比如金属、硬质塑料等。
本申请通过连接杆64连接定位球头61和成型平台板30，定位球头61在第一凹槽部51可以进行适当的转动以及进行适当的竖直移动。通过定位球头的旋转和上下移动来实现成型平台板的成型面贴紧树脂槽底面，从而达到精确调平，从而带动成型平台板30转动，以调整成型平台板30的成型面与安装在底座板20上的树脂槽10的底面平行设置，提高了3D打印过程中每一层固化层的高度定位的精度，也就提升了被打印件的表面精度。在3D打印过程中先通过竖直移动组件40带动成型平台板30向下方的底座板20运动，成型平台板30与底座板20（即树脂槽的底面）抵接，在定位球头61的作用下，成型平台板30会调整至与树脂槽的底面平行。
在一些实施例中，通孔和紧定件63的数量可以设置为多个，对具体的数量在此不做限定，可以根据实际情况设置。紧定件63可以为具有螺纹的销钉，通过螺纹固定方式将紧定件63固定于通孔中。
在一个可选的实施例中，平台调整组件60还包括第一弹性件65，第一弹性件65设置于连接件50上第一凹槽部51的底面与定位球头61之间，此结构使得第一弹性件65对定位球头61施加方向朝向底座板20的弹力。在调节成型平台板30时，第一弹性件65的弹力可以挤压定位球头61，使得定位球头在第一凹槽部内进行适当的竖直移动，使得与定位球头61连接的成型平台板30自动贴合树脂槽10底面所在的平面，简化了调整过程，并且使得调整结果更加准确。在一些实施例中，第一弹性件65设置为弹簧。
在一些实施例中，连接件50的一侧面上设置有第二凹槽部52，竖直移动件插入到第二凹槽部52内，并且通过一个固定件70将竖直移动组件40固定于连接件50上，从而使得竖直移动件带动连接件50同步上下移动。
请参照图1-图3所示，竖直移动组件40包括定位板41、滑块42、升降悬臂43、丝杆44和电机45。定位板41设置在底座板20上，在定位板41上设置有直线导轨411，滑块42在直线导轨411上可滑动设置。升降悬臂43固定安装于滑块42上，并且升降悬壁的一端插入到第二凹槽部52内，通过固定件70将升降悬臂43固定住。丝杆44穿设在升降悬臂43上，电机45与丝杆44传动连接，其用于带动升降悬臂43沿着直线导轨411滑动。电机45安装在底座板20上，也可以与定位板41固定在一起。在一些实施例中电机45的丝杆44即为电机45的转轴，也就是说电机45与丝杆44为一体式结构，丝杆44直接作为电机45的转轴，提升了同轴度，避免了丝杆44径向跳动带来的传动误差，同时简化了安装结构。本实施例中的电机45内部结构进行改进，在电机45的转轴与外壳之间去除现市场上常用的缓冲零件，因而具有较大的轴向刚度，承受轴向力的时候可以避免轴向位移，从而可以避免由于轴向阻力变化导致的成型平台板30定位的误差。
在一个可选的实施例中，竖直移动组件40还包括丝杆螺母调节组件46，丝杆螺母调节组件46与丝杆44传动连接，并且丝杆螺母调节组件46固定安装在升降悬臂43上。通过此结构使得丝杆带动升降悬臂43上下移动。
请参照图2、图7和图8所示，丝杆螺母调节组件46包括：螺母主体461、第二弹性件462和卡箍件463。在升降悬臂43上设置有丝杆螺母调节组件46的第三凹槽部431，螺母主体461包括固定部4611和调节部4612，调节部4612是一个圆柱环，丝杆44穿过固定部4611和调节部4612，在固定部4611上设置有多个开孔（图中未标示），通过多个螺钉将固定部4611固定于升降悬臂43上的第三凹槽部431内。在调节部4612的圆柱侧面上均匀排布有多条开口部46121，开口部46121的设置增加了调节部4612的弹性，使得开口部46121在外力的作用可以进行形变。卡箍件463套设在调节部4612上，第二弹性件462套设于卡箍件463上，安装时固定部4611靠近第三凹槽部431的开口处。在本实施例中，卡箍件463可以相对调节部4612进行一定的移动，在第二弹性件462的弹性力的作用下，卡箍件463挤压调节部4612，从而夹紧穿设在调节部4612内的丝杆44，使得螺母主体461的内传动面能够始终于丝杆44的传动面紧密接触，从而大大减少配合间隙，提高了直线运动的精度。
在一些较优的实施例中，调节部4612远离固定部4611的一端的侧面向外凸出凸缘部46122，凸缘部46122与卡箍件463的内侧面抵合。在使用过程中调节部4612会被磨损，在调节部4612的端口部增加凸缘部46122，也就增加了调节部4612的变形量，凸缘部46122起到了补偿磨损带来的配合间隙的作用，延长了螺母主体461的使用寿命。其中，螺母主体461的材质为金属材质，也可以为耐磨性好的塑料材质。
请参照图1所示，本申请还保护一种光固化3D打印机，该光固化3D打印机包括上述的平台机构和机身80。底座板20设置于机身80上，树脂槽10安装在底座板20上，竖直移动组件40设置在底座板20上。在本实施例中机身80内部还设置了其它的零部件，比如控制平台等，这些技术特征都是现有技术，在此不做赘述。本申请的光固化3D打印机上升降机构的运动精度更高，同时也能快速准确的调整成型平台板30与树脂槽10底面的平行度，3D打印机的打印质量高。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (9)

  1. 一种光固化3D打印机的平台调整机构，其用于光固化3D打印机中，所述光固化3D打印机包括树脂槽，其特征在于，所述平台机构包括：
    底座板，所述树脂槽安装于所述底座板上；
    成型平台板，所述成型平台板朝向所述树脂槽的平面为成型面，所述成型面与安装于所述底座板上的树脂槽的底面平行设置；
    竖直移动组件，与所述成型平台板连接，控制所述成型平台板在竖直方向上移动；
    连接件，连接所述竖直移动件和所述成型平台板；
    平台调整组件；设置于所述连接件与所述成型平台板之间，用于调整所述成型平台板与所述树脂槽的底面平行；
    其中，所述平台调整组件包括定位球头、定位压紧件、紧定件和连接杆，所述连接件朝向所述成型平台板的侧面设置有第一凹槽部，所述定位球头和所述定位压紧件均设置于所述第一凹槽部内；所述定位压紧件套设于所述定位球头外，所述连接杆连接所述定位球头和所述成型平台板，所述连接件上还设有通孔，所述紧定件从所述通孔中穿过，压紧所述定位压紧件，所述定位压紧件产生形变从而压紧所述定位球头；所述定位压紧件为可变形件。
  2. 根据权利要求1所述的光固化3D打印机的平台调整机构，其特征在于，所述平台调整组件还包括设置于所述第一凹槽部底面与所述定位球头之间的第一弹性件，所述第一弹性件对所述定位球头施加方向朝向所述底座板的弹力。
  3. 根据权利要求2所述的光固化3D打印机的平台调整机构，其特征在于，所述第一弹性件为弹簧。
  4. 根据权利要求2所述的光固化3D打印机的平台调整机构，其特征在于，所述连接件的侧面上设置有第二凹槽部，所述竖直移动组件插入所述第二凹槽部内，通过一固定件将所述竖直移动组件锁紧于所述连接件上，所述竖直移动组件带动所述连接件同步运动。
  5. 根据权利要求4所述的光固化3D打印机的平台调整机构，其特征在于，所述竖直移动件包括定位板、滑块、升降悬臂、丝杆和电机；所述定位板设置于所述底座板上，且所述定位板上设置有直线导轨；所述滑块在所述直线导轨上可滑动设置；所述升降悬臂固定安装于所述滑块上，且所述升降悬臂的一端插入所述第二凹槽部内；所述丝杆穿设于所述升降悬臂上；所述电机与所述丝杆传动连接，用于带动所述升降悬臂沿着所述直线导轨滑动。
  6. 根据权利要求5所述的光固化3D打印机的平台调整机构，其特征在于，竖直移动组件还包括丝杆螺母调节组件，所述丝杆螺母组件与所述丝杆传动连接，且所述丝杆螺母组件固定设置于所述升降悬臂上。
  7. 根据权利要求6所述的光固化3D打印机的平台调整机构，其特征在于，所述丝杆螺母调节组件包括：螺母主体、第二弹性件和卡箍件，所述螺母主体包括固定部和调节部，所述调节部为一端与所述固定部连接的圆柱环，所述调节部的圆柱侧面设置有多条开口部；所述卡箍件套设于所述调节部上，所述第二弹性件套设于所述卡箍件上；所述固定部通过多个螺钉固定于所述升降悬臂上。
  8. 根据权利要求7所述的光固化3D打印机的平台调整机构，其特征在于，所述调节部远离所述固定部的一端的侧面向外凸出凸缘部，所述凸缘部与所述卡箍件的内侧面抵合。
  9. 一种光固化3D打印机，其特征在于，包括如权利要求1-8任一项所述的光固化3D打印机的平台调整机构。
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