WO2016173059A1 - 三维打印机中多轴承支撑结构 - Google Patents

三维打印机中多轴承支撑结构 Download PDF

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WO2016173059A1
WO2016173059A1 PCT/CN2015/080176 CN2015080176W WO2016173059A1 WO 2016173059 A1 WO2016173059 A1 WO 2016173059A1 CN 2015080176 W CN2015080176 W CN 2015080176W WO 2016173059 A1 WO2016173059 A1 WO 2016173059A1
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gear
bearings
bearing
dimensional printer
force
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PCT/CN2015/080176
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English (en)
French (fr)
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金葆青
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金葆青
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • 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 utility model relates to the technical field of three-dimensional printing, in particular to a multi-bearing support structure applied to a three-dimensional printer in the three-dimensional printer.
  • Three-dimensional printing is a kind of rapid prototyping technology. It is a technique of constructing an object by layer-by-layer printing based on a digital model file and using a bondable material such as powdered metal or plastic. It has been used in the manufacture of molds in the fields of mold manufacturing and industrial design. At present, with the development of technology, 3D printing technology is gradually being used for the direct manufacture of some products. In particular, parts of high-value applications, such as hip joints or teeth, or some aircraft parts, have begun to use the above techniques for print forming.
  • the 3D printer is a device for 3D printing. It uses a layered stacking method to create a 3D model. The operation process is similar to that of a conventional printer, except that a conventional printer prints ink onto a paper to form a two-dimensional plan. Paper, and the three-dimensional printer is a liquid photosensitive resin material, molten plastic wire, gypsum powder and the like by spraying adhesive or extrusion to achieve layer stacking to form a three-dimensional entity.
  • the above three-dimensional printer generally includes: a gear and a bearing, wherein the gear is applied to the extrusion motor and matched with the bearing. A corresponding extruded wire extrusion space is formed between the gear and the bearing.
  • the existing bearing is a single bearing structure that is distributed on one side of the gear and provides a force to the gear.
  • the output shaft of the extrusion motor is always subjected to a single-sided pressure, so that the output shaft is prone to displacement and deformation, and the long-term use will affect the service life of the extrusion motor and the printing of the three-dimensional printer. Accuracy.
  • the present invention provides a multi-bearing support structure in a three-dimensional printer, comprising: a gear, and a plurality of bearings supporting the gear;
  • the plurality of bearings are distributed on both sides of the gear, one of the plurality of bearings is distributed on one side of the gear, an extrusion space is formed between the bearing and the gear, and the gear is applied First force
  • the remaining bearing is distributed on the other side of the gear, and the remaining bearing is tangent to the gear and has a tangent point, the remaining bearing applying a second force to the gear, the tangent point being A force point between the corresponding bearing and the gear, the first force is balanced with the second force.
  • the number of bearings on one side of the gear is two, and the number of bearings on the other side of the gear is one.
  • the edges of the two bearings on one side of the gear are tangent to have a first tangent point, and the center of the bearing on the other side is located in the first cut The point is connected to the center of the gear.
  • the two bearings on one side of the gear have a pitch
  • the line segment having the center of the two bearings on the one side has a midpoint
  • the other The center of the bearing on the side is located on the line connecting the midpoint to the center of the gear.
  • the three bearings on both sides of the gear have the same diameter.
  • the component forces of the second force in the vertical direction are balanced, and the component forces of the second force in the horizontal direction are the first force Balanced.
  • the gear and the plurality of bearings are mounted in the same mounting plane.
  • the gear has an extrusion groove, and the extrusion groove forms an extrusion space with the gear of the corresponding side.
  • the number of the plurality of bearings is at least three.
  • the utility model has the beneficial effects that the multi-bearing support structure of the three-dimensional printer of the present invention provides a phase balancing force to the gear, thereby supporting the gear and assisting the gear to perform the extrusion action. At the same time, it can prevent the gear and the corresponding motor from generating displacement, avoiding the deformation of the motor output shaft and prolonging the service life of the motor.
  • FIG. 1 is a plan view showing a specific embodiment of a multi-bearing support structure in a three-dimensional printer of the present invention.
  • the multi-bearing support structure 100 of the three-dimensional printer of the present invention includes a gear 10 and a plurality of bearings 20 supporting the gear 10.
  • the bearing 20 supports the gear and assists in the extrusion operation, and the balance of the forces provided by the plurality of bearings 20 for the gear 10 is balanced.
  • the gear 10 and the plurality of bearings 20 are mounted in the same mounting plane, and the number of the plurality of bearings 20 is three or more.
  • the plurality of bearings 20 are distributed on both sides of the gear 10, and one of the plurality of bearings 20 is distributed on one side of the gear 10, and the bearing 20 applies a first action to the gear 10. force.
  • an extrusion space is formed between the bearing 20 and the gear 10, so that the corresponding extruded wire is located in the extrusion space, and the gear 10 performs a corresponding extrusion action.
  • the gear 10 has an extrusion groove that forms an extrusion space with the gear 10 of the corresponding side.
  • the remaining bearing 20 is distributed on the other side of the gear 10, and the edge of the remaining bearing 20 is tangent to the edge of the gear 10 and has a tangent point, the number of the tangent points and the remaining bearing 20 The numbers are equal.
  • the remaining bearing 20 applies a second force to the gear 10, the point of cut being a point of force between the respective bearing 20 and the gear 10, the first force being balanced with the second force. Thereby, the gear 10 is prevented from being displaced correspondingly when subjected to a force in a single direction.
  • the number of bearings 20 on one side of the gear 10 is two, and the number of bearings 20 on the other side of the gear 10 is one. Therefore, in the present embodiment, the component forces in the vertical direction of the second force are balanced, and the component forces in the horizontal direction of the second force are balanced with the first force.
  • the two bearings 20 on one side of the gear 10 When the edges of the two bearings 20 on one side of the gear 10 are tangent, the two have a first tangent point, and the center of the bearing 20 of the other side is located at the first tangent point and the center of the gear 10 Connected.
  • the line segment ending in the center of the two bearings 20 on the one side has a midpoint, and the center of the bearing 20 on the other side is located therein A point is connected to the center of the gear 10 .
  • the distance between the two bearings 20 on one side is preferably as close as possible, but the distance between the two bearings should ensure that the two are in a tangential critical state.
  • the two bearings 20 on one side provide the gears 10 with the forces F1 and F2, respectively, and the bearings on the other side provide the gear 20 with a force F3 between the two bearings 20 on one side of the gear 10.
  • the line of the center of the circle is L1
  • the line connecting the center of the two bearings 20 and the center of the gear 10 is L2, so that there is an angle ⁇ between L1 and L2.
  • the distance between the two bearings on the same side should be as small as possible, and both should be at the critical point of contact to prevent motion resistance.
  • the diameters of the three bearings 20 on both sides of the gear 10 are equal.
  • the number of the plurality of bearings 20 may be three or more. At this time, one of the bearings 20 is still separately distributed on one side of the gear 10, forming an extrusion space therewith, and providing a corresponding force. The remaining bearing 20 is on the other side to provide a balancing force.
  • the multi-bearing support structure of the three-dimensional printer of the present invention provides a phase balancing force to the gears, thereby preventing gears and corresponding motors from being generated while supporting the gears and assisting the gears to perform the extrusion action.
  • the displacement avoids deformation of the motor output shaft and prolongs the service life of the motor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

一种三维打印机中多轴承支撑结构，其包括：齿轮、支撑所述齿轮的多个轴承；所述多个轴承分布于所述齿轮的两侧，所述多个轴承中的一个分布于所述齿轮的一侧，该轴承与所述齿轮之间形成挤出空间，并对所述齿轮施加第一作用力；所述剩余轴承分布于所述齿轮的另一侧，且所述剩余轴承与所述齿轮相切，并具有切点，所述剩余轴承对所述齿轮施加第二作用力，所述切点为相应轴承与齿轮之间的受力点，所述第一作用力与所述第二作用力相平衡。本实用新型的三维打印机中多轴承支撑结构对齿轮提供相平衡的作用力，从而，在对齿轮进行支撑以及辅助齿轮进行挤出动作的同时，还能够防止齿轮以及相应电机产生位移，避免电机输出轴发生变形，延长了电机的使用寿命。

Description

三维打印机中多轴承支撑结构 技术领域
本实用新型涉及三维打印技术领域，具体地，尤其涉及一种应用于所述三维打印机中的三维打印机中多轴承支撑结构。
背景技术
三维印刷即快速成形技术的一种，它是一种以数字模型文件为基础，运用粉末状金属或塑料等可粘合材料，通过逐层打印的方式来构造物体的技术。其曾常在模具制造、工业设计等领域被用于制造模型，目前，随着技术的发展，三维打印技术正逐渐用于一些产品的直接制造。特别是一些高价值应用的零部件，例如，髋关节或牙齿，或一些飞机零部件等，已经开始使用上述技术打印成形。
三维打印机是用于进行三维打印的设备，其采用层层堆积的方式分层制作出三维模型，其运行过程类似于传统打印机，只不过传统打印机是把墨水打印到纸质上形成二维的平面图纸，而三维打印机是把液态光敏树脂材料、熔融的塑料丝、石膏粉等材料通过喷射粘结剂或挤出等方式实现层层堆积叠加形成三维实体。
上述三维打印机通常包括：齿轮以及轴承，其中，齿轮应用于挤出电机上，并与轴承相配合。齿轮与轴承之间形成相应挤出丝挤出空间。然而，现有的轴承为单轴承结构，其分布于所述齿轮的一侧，并对齿轮提供作用力。如此，由于该单一作用力，使得挤出电机的输出轴始终受到了一个单侧的压力，从而，输出轴容易产生位移和变形，长期使用会影响到挤出电机的使用寿命以及三维打印机打印的精确度。
因此，针对上述问题，有必要提出进一步的解决方案。
实用新型内容
本实用新型的目的是提供一种三维打印机中多轴承支撑结构，以克服现有技术中存在的不足。
为实现上述目的，本实用新型提供一种三维打印机中多轴承支撑结构，其包括：齿轮、支撑所述齿轮的多个轴承；
所述多个轴承分布于所述齿轮的两侧，所述多个轴承中的一个分布于所述齿轮的一侧，该轴承与所述齿轮之间形成挤出空间，并对所述齿轮施加第一作用力；
所述剩余轴承分布于所述齿轮的另一侧，且所述剩余轴承与所述齿轮相切，并具有切点，所述剩余轴承对所述齿轮施加第二作用力，所述切点为相应轴承与齿轮之间的受力点，所述第一作用力与所述第二作用力相平衡。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述齿轮一侧的轴承的数量为两个，所述齿轮另一侧的轴承的数量为一个。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述齿轮一侧的两个轴承的边缘相切，具有第一切点，所述另一侧的轴承的圆心位于所述第一切点与所述齿轮圆心的连线上。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述齿轮一侧的两个轴承具有间距，以所述一侧的两个轴承的圆心为端点的线段具有中点，所述另一侧的轴承的圆心位于所述中点与所述齿轮圆心的连线上。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述齿轮两侧的三个轴承的直径相等。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述第二作用力竖直方向的分力之间相平衡，所述第二作用力水平方向的分力与所述第一作用力相平衡。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述齿轮和多个轴承安装于同一安装平面内。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述齿轮具有挤出槽，所述挤出槽与所述相应侧的齿轮形成挤出空间。
作为本实用新型的三维打印机中多轴承支撑结构的改进，所述多个轴承的数量为至少三个。
与现有技术相比，本实用新型的有益效果是：本实用新型的三维打印机中多轴承支撑结构对齿轮提供相平衡的作用力，从而，在对齿轮进行支撑以及辅助齿轮进行挤出动作的同时，还能够防止齿轮以及相应电机产生位移，避免电机输出轴发生变形，延长了电机的使用寿命。
附图说明
图1是本实用新型的三维打印机中多轴承支撑结构的一具体实施方式的平面示意图。
具体实施方式
为使本实用新型的目的、技术方案和优点更加清楚明了，下面结合具体实施方式并参照附图，对本实用新型进一步详细说明。应该理解，这些描述只是示例性的，而并非要限制本实用新型的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本实用新型的概念。
如图1所示，本实用新型的三维打印机中多轴承支撑结构100包括：齿轮10、支撑所述齿轮10的多个轴承20。其中，轴承20对齿轮进行支撑，并辅助进行挤出动作，且多个轴承20为所述齿轮10提供的作用力之间相平衡。优选地，所述齿轮10和多个轴承20安装于同一安装平面内，所述多个轴承20的数量为三个或三个以上。
具体地，所述多个轴承20分布于所述齿轮10的两侧，所述多个轴承20中的一个分布于所述齿轮10的一侧，该轴承20对所述齿轮10施加第一作用力。同时，该轴承20与所述齿轮10之间形成挤出空间，从而，相应挤出丝位于该挤出空间中，齿轮10进行相应的挤出动作。为了形成说 上述挤出空间，所述齿轮10具有挤出槽，所述挤出槽与所述相应侧的齿轮10形成挤出空间。
所述剩余轴承20分布于所述齿轮10的另一侧，且所述剩余轴承20的边缘与所述齿轮10的边缘相切，并具有切点，该切点的数量与剩余轴承20的个数相等。所述剩余轴承20对所述齿轮10施加第二作用力，所述切点为相应轴承20与齿轮10之间的受力点，所述第一作用力与所述第二作用力相平衡。从而，避免了齿轮10在受到单一方向的作用力时产生相应的位移。
作为一种实施方式，所述齿轮10一侧的轴承20的数量为两个，所述齿轮10另一侧的轴承20的数量为一个。从而，本实施方式中，第二作用力竖直方向的分力之间相平衡，第二作用力水平方向的分力与第一作用力相平衡。
当所述齿轮10一侧的两个轴承20的边缘相切时，二者具有第一切点，所述另一侧的轴承20的圆心位于所述第一切点与所述齿轮10圆心的连线上。当所述齿轮10一侧的两个轴承20具有间距时，以所述一侧的两个轴承20的圆心为端点的线段具有中点，所述另一侧的轴承20的圆心位于所述中点与所述齿轮10圆心的连线上。其中，一侧的两个轴承20之间的距离以尽量靠近为优选方式，但两个轴承之间的距离应当保证二者出于相切的临界状态。论证过程如下：
设位于一侧的两个轴承20为齿轮10提供的作用力分别为F1和F2，位于另一侧的轴承为齿轮20提供的作用力为F3，位于齿轮10一侧的两个轴承20之间圆心的连线为L1，两个轴承20的圆心与齿轮10的圆心的连线为L2，从而L1与L2之间具有夹角α。
从而，如果齿轮在原位不产生位移，那么：F3＝F1*sin a+F2*sin a。当α的角度越大，那么在横向的作用力则越大，以便于F3平衡。当齿轮顺时针运动挤出丝时，同一侧的两个轴承将同时做顺时针运动，那么二者接触面则在做反向运动，产生的两个力互为摩擦力，即为运动阻力。
因此，同一侧的两个轴承的距离要尽可能的小，同时二者又要处在接触的临界点，防止产生运动阻力。
本实施方式中，所述齿轮10两侧的三个轴承20的直径相等。
在其他实施方式中，多个轴承20的数量可以为三个以上，此时，其中一个轴承20依然单独分布于齿轮10的一侧，与其形成挤出空间，并提供相应作用力。剩余轴承20位于另一侧，以提供平衡作用力。
综上所述，本实用新型的三维打印机中多轴承支撑结构对齿轮提供相平衡的作用力，从而，在对齿轮进行支撑以及辅助齿轮进行挤出动作的同时，还能够防止齿轮以及相应电机产生位移，避免电机输出轴发生变形，延长了电机的使用寿命。
应当理解的是，本实用新型的上述具体实施方式仅仅用于示例性说明或解释本实用新型的原理，而不构成对本实用新型的限制。因此，在不偏离本实用新型的精神和范围的情况下所做的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。此外，本实用新型所附权利要求旨在涵盖落入所附权利要求范围和边界、或者这种范围和边界的等同形式内的全部变化和修改例。

Claims (9)

  1. 一种三维打印机中多轴承支撑结构，其特征在于，所述三维打印机中多轴承支撑结构包括：齿轮、支撑所述齿轮的多个轴承；
    所述多个轴承分布于所述齿轮的两侧，所述多个轴承中的一个分布于所述齿轮的一侧，该轴承与所述齿轮之间形成挤出空间，并对所述齿轮施加第一作用力；
    所述剩余轴承分布于所述齿轮的另一侧，且所述剩余轴承与所述齿轮相切，并具有切点，所述剩余轴承对所述齿轮施加第二作用力，所述切点为相应轴承与齿轮之间的受力点，所述第一作用力与所述第二作用力相平衡。
  2. 根据权利要求1所述的三维打印机中多轴承支撑结构，其特征在于，所述齿轮一侧的轴承的数量为两个，所述齿轮另一侧的轴承的数量为一个。
  3. 根据权利要求2所述的三维打印机中多轴承支撑结构，其特征在于，所述齿轮一侧的两个轴承的边缘相切，具有第一切点，所述另一侧的轴承的圆心位于所述第一切点与所述齿轮圆心的连线上。
  4. 根据权利要求2所述的三维打印机中多轴承支撑结构，其特征在于，所述齿轮一侧的两个轴承具有间距，以所述一侧的两个轴承的圆心为端点的线段具有中点，所述另一侧的轴承的圆心位于所述中点与所述齿轮圆心的连线上。
  5. 根据权利要求3所述的三维打印机中多轴承支撑结构，其特征在于，所述齿轮两侧的三个轴承的直径相等。
  6. 根据权利要求1所述的三维打印机中多轴承支撑结构，其特征在于，所述第二作用力竖直方向的分力之间相平衡，所述第二作用力水平方向的分力与所述第一作用力相平衡。
  7. 根据权利要求1所述的三维打印机中多轴承支撑结构，其特征在 于，所述齿轮和多个轴承安装于同一安装平面内。
  8. 根据权利要求1所述的三维打印机中多轴承支撑结构，其特征在于，所述齿轮具有挤出槽，所述挤出槽与所述相应侧的齿轮形成挤出空间。
  9. 根据权利要求1所述的三维打印机中多轴承支撑结构，其特征在于，所述多个轴承的数量为至少三个。
PCT/CN2015/080176 2015-04-30 2015-05-29 三维打印机中多轴承支撑结构 WO2016173059A1 (zh)

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CN202986109U (zh) * 2012-12-21 2013-06-12 金华市闪铸科技有限公司 一种用于3d打印机喷头的丝料挤出机构
DE202014103023U1 (de) * 2014-07-02 2014-08-08 Michael Schillinger Extruderanordnung für einen 3D-Drucker
CN204036856U (zh) * 2014-08-13 2014-12-24 郑州乐彩科技股份有限公司 一种3d打印机喷头装置
CN104441662A (zh) * 2014-11-29 2015-03-25 济南大学 3d打印机挤出机构

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CN202986109U (zh) * 2012-12-21 2013-06-12 金华市闪铸科技有限公司 一种用于3d打印机喷头的丝料挤出机构
DE202014103023U1 (de) * 2014-07-02 2014-08-08 Michael Schillinger Extruderanordnung für einen 3D-Drucker
CN204036856U (zh) * 2014-08-13 2014-12-24 郑州乐彩科技股份有限公司 一种3d打印机喷头装置
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