阅读说明：本技术 3d打印机自动换料装置及自动换料方法 (Automatic material changing device and automatic material changing method for 3D printer ) 是由 刘辉林 唐京科 敖丹军 陈春 严罗林 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种3D打印机自动换料装置及自动换料方法,其中装置包括挤出机构、切换机构；挤出机构包括主动轮、第一从动轮组、第二从动轮组、第一旋转夹、第二旋转夹以及拉伸弹簧,第一旋转夹和第二旋转夹的一端均与盖体铰接,第一旋转夹和第二旋转夹的另一端通过拉伸弹簧连接；切换机构包括与挤出底座转动连接的切换杆,及与切换杆固定连接的切换手柄；第一旋转夹近于拉伸弹簧的一端固定连接有第一限位柱,第二旋转夹近于拉伸弹簧的一端固定连接有第二限位柱；切换手柄处于初始状态时,切换杆的两端分别抵接于第一限位柱和第二限位柱,以使得第一从动轮组和第二从动轮组均与主动轮分离。本发明自动化程度高,提升了工作效率,节约了人力成本。(The invention discloses an automatic material changing device and an automatic material changing method for a 3D printer, wherein the device comprises an extrusion mechanism and a switching mechanism; the extruding mechanism comprises a driving wheel, a first driven wheel set, a second driven wheel set, a first rotating clamp, a second rotating clamp and an extension spring, one end of each of the first rotating clamp and the second rotating clamp is hinged with the cover body, and the other end of each of the first rotating clamp and the second rotating clamp is connected through the extension spring; the switching mechanism comprises a switching rod which is rotatably connected with the extrusion base and a switching handle which is fixedly connected with the switching rod; one end of the first rotating clamp close to the extension spring is fixedly connected with a first limiting column, and one end of the second rotating clamp close to the extension spring is fixedly connected with a second limiting column; when the switching handle is in an initial state, two ends of the switching rod are respectively abutted to the first limiting column and the second limiting column, so that the first driven wheel set and the second driven wheel set are both separated from the driving wheel. The invention has high automation degree, improves the working efficiency and saves the labor cost.)

The automatic material changing device of the 3D printer is characterized by comprising a cover body, an extrusion mechanism, a switching mechanism and a motor; an installation cavity is arranged in the cover body, and the extruding mechanism and the switching mechanism are installed in the installation cavity; the extrusion mechanism comprises a driving wheel, a first driven wheel set, a second driven wheel set, a first rotating clamp, a second rotating clamp and an extension spring; one ends of the first rotating clamp and the second rotating clamp are hinged with the cover body, and the other ends of the first rotating clamp and the second rotating clamp are connected through the extension spring; the driving wheel is positioned between the first rotating clamp and the second rotating clamp; an output shaft of the motor is connected with the driving wheel; the switching mechanism comprises a switching rod which is rotatably connected with the cover body and a switching handle which is fixedly connected with the switching rod; one end of the first rotating clamp close to the extension spring is fixedly connected with a first limiting column, and one end of the second rotating clamp close to the extension spring is fixedly connected with a second limiting column; the switching handle is to being close to when first driven wheelset rotates, first driven wheelset with the action wheel meshing, the switching handle is to being close to when second driven wheelset rotates, the second driven wheelset with the action wheel meshing.

2. The 3D printer auto feed changer of claim 1, wherein the first driven wheel set comprises a first switching gear and a first extrusion bearing; the first switching gear is arranged above the first extrusion bearing, and a first bulge is arranged on the first switching gear; the second driven wheel set comprises a second switching gear and a second extrusion bearing; the second switching gear is arranged above the second extrusion bearing, and a second bulge is arranged on the second switching gear.

3. The automatic material changing device for the 3D printer according to claim 1, wherein one end of the switching rod is further provided with a first blocking portion, and the other end of the switching rod is further provided with a second blocking portion.

4. The automatic material changing device of the 3D printer according to claim 3, wherein one end of the switching rod is provided with a first concave arc-shaped surface, and the first concave arc-shaped surface forms a guide surface which is abutted with the first limiting column; the other end of the switching rod is provided with a second concave arc-shaped surface, and the second concave arc-shaped surface forms a guide surface which is abutted against the second limiting column.

5. The automatic reloading device of 3D printer as claimed in claim 2, wherein said cover body comprises an extrusion base, and an extrusion cover connected with the extrusion base; the extruding base is provided with the installation cavity, the through hole is located on the extruding base, the motor is fixed at the bottom of the extruding base, and an output shaft of the motor penetrates through the through hole to be connected with the driving wheel.

6. The automatic material changing device of the 3D printer according to claim 5, wherein the first switching gear and the extrusion base are both provided with a first tension spring column, the second switching gear and the extrusion base are both provided with a second tension spring column, a first spring is connected between the first switching gear and two first tension spring columns of the extrusion base, and a second spring is connected between the second switching gear and two second tension spring columns of the extrusion base.

7. The automatic refueling device for 3D printers according to any one of claims 1 to 6, further comprising a first feeding pipe, a second feeding pipe, a first discharging pipe, and a second discharging pipe; first inlet pipe and first discharging pipe are located respectively first driven wheelset and the middle both ends of action wheel, second inlet pipe and second discharging pipe are located respectively the second is driven wheelset and the middle both ends of action wheel.

8. The automatic material changing device for the 3D printer according to claim 7, wherein the extrusion base is provided with a first fixing hole for fixing the first feeding pipe, a second fixing hole for fixing the first discharging pipe, a third fixing hole for fixing the second feeding pipe, and a fourth fixing hole for fixing the second discharging pipe; the first fixing hole and the second fixing hole are positioned on the same axis, and the third fixing hole and the fourth fixing hole are positioned on the same axis; the mounting cavity is also internally provided with a supporting plate for supporting the first feeding pipe and the second feeding pipe, and the supporting plate is provided with a first supporting hole with the diameter corresponding to that of the first feeding pipe and a second supporting hole with the diameter corresponding to that of the second feeding pipe; the first support hole and the second support hole are arranged side by side.

9. The automatic reloading device of 3D printer according to claim 8, characterized in that it also comprises a motor mounting plate; the motor mounting plate is fixed in extrude the bottom of base, the motor with motor mounting plate fixed connection.

10. An automatic refueling method using the automatic refueling device of the 3D printer according to any one of claims 1 to 9, wherein the method comprises the following steps:

monitoring a feeding channel which is working;

judging whether the feeding channel which is working is in a state of material breaking or not;

if so, the motor is controlled to drive the driving wheel to rotate reversely so as to withdraw the residual threads in the feeding channel, and the driven wheel set corresponding to the feeding channel is separated from the driving wheel under the action force of the driven wheel set corresponding to the feeding channel on the switching rod, so that the driven wheel set corresponding to the other feeding channel is meshed with the driving wheel.

Technical Field

The invention relates to the field of 3D printing, in particular to an automatic material changing device and an automatic material changing method for a 3D printer.

Background

In the 3D printing process, an extruder is used for driving the material wires to enter the spray head, and then the molten material wires are extruded from the nozzle for printing. But the condition that the stock silk runs out can appear printing on the way, needs operating personnel to stick in for a long time and carries out manual reloading beside the printer, if do not in time change the charging tray, prints and will fail, has greatly reduced work efficiency and stock silk utilization ratio.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an automatic material changing device and an automatic material changing method for a 3D printer.

In order to achieve the purpose, the invention adopts the following technical scheme: the automatic material changing device of the 3D printer comprises a cover body, an extrusion mechanism, a switching mechanism and a motor; an installation cavity is arranged in the cover body, and the extruding mechanism and the switching mechanism are installed in the installation cavity; the extrusion mechanism comprises a driving wheel, a first driven wheel set, a second driven wheel set, a first rotating clamp, a second rotating clamp and an extension spring; one ends of the first rotating clamp and the second rotating clamp are hinged with the cover body, and the other ends of the first rotating clamp and the second rotating clamp are connected through the extension spring; the driving wheel is positioned between the first rotating clamp and the second rotating clamp; an output shaft of the motor is connected with the driving wheel; the switching mechanism comprises a switching rod which is rotatably connected with the cover body and a switching handle which is fixedly connected with the switching rod; one end of the first rotating clamp close to the extension spring is fixedly connected with a first limiting column, and one end of the second rotating clamp close to the extension spring is fixedly connected with a second limiting column; the switching handle is to being close to when first driven wheelset rotates, first driven wheelset with the action wheel meshing, the switching handle is to being close to when second driven wheelset rotates, the second driven wheelset with the action wheel meshing.

The further technical scheme is as follows: the first driven wheel set comprises a first switching gear and a first extrusion bearing; the first switching gear is arranged above the first extrusion bearing, and a first bulge is arranged on the first switching gear; the second driven wheel set comprises a second switching gear and a second extrusion bearing; the second switching gear is arranged above the second extrusion bearing, and a second bulge is arranged on the second switching gear.

The further technical scheme is as follows: one end of the switching rod is also provided with a first blocking part, and the other end of the switching rod is also provided with a second blocking part.

The further technical scheme is as follows: one end of the switching rod is provided with a first inwards concave arc-shaped surface, and the first inwards concave arc-shaped surface forms a guide surface which is abutted against the first limiting column; the other end of the switching rod is provided with a second concave arc-shaped surface, and the second concave arc-shaped surface forms a guide surface which is abutted against the second limiting column.

The further technical scheme is as follows: the cover body comprises an extrusion base and an extrusion cover connected with the extrusion base; the extruding base is provided with the installation cavity, the through hole is located on the extruding base, the motor is fixed at the bottom of the extruding base, and an output shaft of the motor penetrates through the through hole to be connected with the driving wheel.

The further technical scheme is as follows: first switching gear all is equipped with first extension spring post on extruding the base, second switching gear all is equipped with second extension spring post on extruding the base, be connected with first spring between first switching gear and two first extension spring posts of extruding the base, second switching gear and two second spring posts of extruding the base are connected with the second spring between.

The further technical scheme is as follows: the device also comprises a first feeding pipe, a second feeding pipe, a first discharging pipe and a second discharging pipe; first inlet pipe and first discharging pipe are located respectively first driven wheelset and the middle both ends of action wheel, second inlet pipe and second discharging pipe are located respectively the second is driven wheelset and the middle both ends of action wheel.

The further technical scheme is as follows: the extrusion base is provided with a first fixing hole for fixing the first feeding pipe, a second fixing hole for fixing the first discharging pipe, a third fixing hole for fixing the second feeding pipe and a fourth fixing hole for fixing the second discharging pipe; the first fixing hole and the second fixing hole are positioned on the same axis, and the third fixing hole and the fourth fixing hole are positioned on the same axis; the mounting cavity is also internally provided with a supporting plate for supporting the first feeding pipe and the second feeding pipe, and the supporting plate is provided with a first supporting hole with the diameter corresponding to that of the first feeding pipe and a second supporting hole with the diameter corresponding to that of the second feeding pipe; the first support hole and the second support hole are arranged side by side.

The further technical scheme is as follows: the motor mounting plate is also included; the motor mounting plate is fixed in extrude the bottom of base, the motor with motor mounting plate fixed connection.

An automatic material changing method adopting the automatic material changing device of the 3D printer comprises the following steps:

monitoring a feeding channel which is working;

judging whether the feeding channel which is working is in a state of material breaking or not;

if so, the motor is controlled to drive the driving wheel to rotate reversely so as to withdraw the residual threads in the feeding channel, and the driven wheel set corresponding to the feeding channel is separated from the driving wheel under the action force of the driven wheel set corresponding to the feeding channel on the switching rod, so that the driven wheel set corresponding to the other feeding channel is meshed with the driving wheel.

Compared with the prior art, the invention has the beneficial effects that: according to the automatic material changing device of the 3D printer, the driven wheel set and the driving wheel are controlled to be meshed and separated through the switching handle, the automatic switching of the feeding channel is realized by utilizing the reverse rotation of the motor, so that the automatic material changing is completed, manual monitoring and material changing are not needed, the automation degree is high, the working efficiency is improved, and the labor cost is saved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.

Drawings

FIG. 1 is an assembly diagram of an embodiment of an automatic material changing device of a 3D printer according to the present invention;

FIG. 2 is an exploded view of an embodiment of an automatic material changing device of a 3D printer according to the present invention;

FIG. 3 is a schematic view of an installation structure of components in an installation cavity in an embodiment of the automatic material changing device of the 3D printer according to the invention;

FIG. 4 is a schematic view of an installation structure of components in an installation cavity in an embodiment of the automatic material changing device of the 3D printer according to the invention (an extrusion base is not shown);

FIG. 5 is a schematic view of a mounting structure of a sub-component inside a mounting cavity in an embodiment of the automatic material changing device of the 3D printer;

FIG. 6 is a schematic structural diagram of an extrusion base in an embodiment of an automatic material changing device of a 3D printer according to the present invention;

FIG. 7 is a schematic structural diagram of a switching mechanism in an embodiment of an automatic material changing device of a 3D printer according to the invention;

fig. 8 is a schematic structural diagram of a first driven wheel set in an embodiment of an automatic material changing device of a 3D printer according to the invention.

Reference numerals

1. A cover body; 11. extruding the cover; 12. extruding the base; 121. a mounting cavity; 122. a first tension spring column; 1221. a first spring; 123. a second tension spring column; 1231. a second spring; 124. a first fixing hole; 125. a second fixing hole; 126. a third fixing hole; 127. a fourth fixing hole; 128. a support plate; 1281. a first support hole; 1282. a second support hole; 129. a through hole; 2. a motor mounting plate; 3. a motor; 4. a first rotating clamp; 41. a first driven wheel set; 411. a first switching gear; 412. a first protrusion; 413. a first extrusion bearing; 42. a first limit post; 43. an extension spring; 5. a second rotating clamp; 51. a second driven wheel set; 52. a second limit post; 6. a switching mechanism; 61. a switch lever; 611. a first inner concave arc surface; 612. a first blocking portion; 613. a second concave arc-shaped surface; 614. a second blocking portion; 62. switching a handle; 7. a driving wheel; 8. a first feed tube; 9. a first discharge pipe; 10. a second feed tube; 20. a second discharge pipe; 30. a first feed channel; 40. a second feed channel.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," some embodiments, "" an example, "" a specific example, "" or "some examples," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.