3D printing consumable heat conduction device and 3D printer

Abstract

The utility model provides a 3D printing consumable heat conduction device and a 3D printer, and relates to the technical field of 3D printing, according to the 3D printing consumable heat conduction device, on the cross section perpendicular to the extending direction of a consumable channel, the consumable channel is provided with a tip part protruding inwards and a contact surface opposite to the tip part, and the contact surface is provided with a heat conduction layer; when the printing consumables are input along the consumable channel, the tip part pierces the printing consumables and pushes the printing consumables to be attached to the contact surface, on one hand, the tip part can cut the conveyed printing consumables, and on the other hand, the cut printing consumables can be extruded to be attached to the contact surface, so that it is ensured that the contact area is large enough, and efficient heat conduction is achieved; and the melting rate of the printing supplies can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a 3D printing consumables heat conducting device and a 3D printer. Background Art

[0002] As 3D printing speeds increase, the extrusion rate of filaments must also be increased. However, this shortens the time the filaments spend in the nozzle's heat channel. If the filaments can't be preheated quickly, the continuous, high-speed supply of printing filaments will be impossible. Therefore, improving the preheating efficiency of 3D printing filaments has become a major technical issue limiting 3D printing process efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a 3D printing consumables heat conducting device and a 3D printer, so as to improve the preheating efficiency of the printing consumables.

[0004] In the first aspect, the 3D printing consumables heat conducting device provided by the present utility model is provided with a consumables channel;

[0005] In a cross section perpendicular to the extending direction of the consumable channel, the consumable channel has an inwardly protruding tip and a contact surface opposite to the tip;

[0006] When the printing consumables are input along the consumables channel, the pointed portion penetrates the printing consumables and pushes the printing consumables to adhere to the contact surface.

[0007] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the tip is deflected toward the inside of the consumables channel along the input direction of the printing consumables.

[0008] In combination with the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the contact surface is inclined toward the tip along the input direction of the printing consumables.

[0009] In combination with the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the contact surface includes: a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface have an included angle.

[0010] In combination with the third possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the tip is symmetrical with respect to the bisector of the angle between the first inclined surface and the second inclined surface.

[0011] In combination with the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein there are multiple tips, and the multiple tips are spaced apart on a cross section perpendicular to the extension direction of the consumable channel and extend along the consumable channel respectively.

[0012] In combination with the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the contact surface is a conical surface, and the radial dimension of the conical surface decreases along the input direction of the consumable channel.

[0013] In combination with the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the contact surfaces are arranged at intervals around the consumables channel, and the contact surfaces are provided with grooves.

[0014] In combination with the first aspect, the present utility model provides an eighth possible implementation of the first aspect, wherein the 3D printing consumables heat conducting component includes: a preheating heat conducting component and a melting heat conducting component;

[0015] The consumables channel is provided on the preheating heat conducting member;

[0016] The melting heat-conducting component is connected to the preheating heat-conducting component, and the melting heat-conducting component is provided with a melting flow channel communicated with the consumable channel.

[0017] In a second aspect, the 3D printer provided by the present invention is equipped with the 3D printing consumables heat conducting device described in the first aspect.

[0018] The embodiment of the utility model brings the following beneficial effects: on the cross section perpendicular to the extension direction of the consumable channel, the consumable channel has an inwardly protruding tip and a contact surface opposite to the tip. When the printing consumables are input along the consumable channel, the tip penetrates the printing consumables and pushes the printing consumables to fit against the contact surface. On the one hand, the tip can cut the transported printing consumables, and on the other hand, it can squeeze the divided printing consumables close to the contact surface, thereby ensuring a sufficiently large contact area to achieve efficient heat conduction, which is beneficial to improving the melting rate of the printing consumables.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of a consumable channel and a cross section of a 3D printing consumable heat conducting device provided in an embodiment of the present invention;

[0022] Figure 2 A schematic cross-sectional view of a first consumable channel of a 3D printing consumable heat conducting device provided by an embodiment of the present invention;

[0023] Figure 3 A schematic cross-sectional view of a second consumable channel of a 3D printing consumable heat conducting device provided by an embodiment of the present invention;

[0024] Figure 4 A schematic cross-sectional view of a third consumable channel of a 3D printing consumable heat conducting device provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a melting assembly of a 3D printer provided in an embodiment of the present invention.

[0026] Icons: 001 - preheating heat conductor; 002 - melting heat conductor; 003 - nozzle; 004 - heating source; 005 - throat; 006 - connector; 007 - heat sink; 100 - consumables channel; 110 - tip; 120 - contact surface; 121 - first slope; 122 - second slope; 123 - groove; 200 - printing consumables. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used to describe the difference in names, and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] like Figure 1 and Figure 2 As shown, the 3D printing consumables heat conducting device provided by the embodiment of the present invention is provided with a consumables channel 100; in a cross section perpendicular to the extension direction of the consumables channel 100, the consumables channel 100 has an inwardly protruding tip 110 and a contact surface 120 opposite to the tip 110; when the printing consumables 200 are input along the consumables channel 100, the tip 110 penetrates the printing consumables 200 and pushes the printing consumables 200 to fit the contact surface 120.

[0031] The inscribed circle of the consumable channel 100 is slightly smaller than the cross-section of the printing consumable 200. When the printing consumable 200 is input into the consumable channel 100, the entrance of the consumable channel 100 can produce a peeling effect on the printing consumable 200, thereby increasing the contact area and tightness of the printing consumable 200 with the inner wall of the consumable channel 100. When the printing consumable 200 is continuously transported along the consumable channel 100, the tip 110 that penetrates the printing consumable 200 produces a cutting effect on the printing consumable 200, which can achieve the purpose of dividing the printing consumable 200. The divided printing consumable 200 is more easily heated to a molten state. In addition, the tip 110 can squeeze the printing consumable 200 close to the contact surface 120. Conversely, the contact surface 120 will also squeeze the printing consumable 200 to fully contact the tip 110, achieving heat conduction through close contact, and higher heat transfer efficiency.

[0032] In an optional embodiment, the tip 110 is tilted toward the inside of the consumables channel 100 along the input direction of the printing consumables 200. As the printing consumables 200 are input, the depth to which the tip 110 penetrates the printing consumables 200 gradually increases, thereby ensuring smooth transportation of the printing consumables 200 while achieving the segmentation of the printing consumables 200.

[0033] In an optional embodiment, the contact surface 120 is inclined along the input direction of the printing consumables 200 toward the tip 110. As the printing consumables 200 are input, the contact surface 120 gradually squeezes the printing consumables 200 close to the tip 110, which can also ensure smooth transportation of the printing consumables 200 and achieve a cutting effect.

[0034] like Figure 1 and Figure 2As shown, the contact surface 120 includes a first inclined surface 121 and a second inclined surface 122. The first inclined surface 121 and the second inclined surface 122 form an angle. In a cross section perpendicular to the direction in which the consumables channel 100 extends, the first inclined surface 121 and the second inclined surface 122 form a V-shape, and the printing consumables 200 can be compressed between the tip 110, the first inclined surface 121, and the second inclined surface 122.

[0035] In addition, the printing consumables 200 cut by the tip 110 will be pressed and adhered to the first inclined surface 121 and the second inclined surface 122 .

[0036] In this embodiment, the tip 110 is symmetrical with respect to the bisector of the angle between the first inclined surface 121 and the second inclined surface 122. The tip 110 can cut the printing consumables 200 into two equal parts, one part of which is pressed between the tip 110 and the first inclined surface 121, and the other part is pressed between the tip 110 and the second inclined surface 122.

[0037] like Figure 1 and Figure 3 As shown, in another embodiment, a plurality of tips 110 are provided, and the plurality of tips 110 are spaced apart in a cross section perpendicular to the extension direction of the consumable channel 100 and extend along the consumable channel 100. The plurality of tips 110 pierce and cut the printing consumable 200 together, which not only increases the contact area between the tips 110 and the printing consumable 200, but also can separate the printing consumable 200 into more small portions, which is more conducive to efficient preheating of the printing consumable 200.

[0038] like Figure 3 and Figure 4 As shown, in an optional embodiment, the contact surface 120 is a conical surface, and the radial dimension of the conical surface decreases along the input direction of the consumable channel 100.

[0039] like Figure 4 As shown, the contact surfaces 120 are arranged at intervals around the consumable channel 100, and the contact surfaces 120 are provided with grooves 123, which can increase the heat transfer area and improve the heat conduction efficiency.

[0040] See also Figure 1 and Figure 5 As shown, the 3D printing consumables heat-conducting device includes: a preheating heat-conducting member 001 and a melting heat-conducting member 002; a consumables channel 100 is provided in the preheating heat-conducting member 001; and the melting heat-conducting member 002 is connected to the preheating heat-conducting member 001 and has a melt flow channel connected to the consumables channel 100. The preheating heat-conducting member 001 and the melting heat-conducting member 002 can be sealed and assembled using a threaded or interference fit. The printing consumables 200 are divided and preheated in the consumables channel 100, and then enter the melt flow channel to heat up and reach a molten state.

[0041] like Figure 5 As shown, the 3D printer provided by the embodiment of the present invention is equipped with the 3D printing consumables heat conducting device described in the above embodiment.

[0042] In an embodiment of the present invention, a heating source 004 is used to surround a preheating heat conductor 001 and a melting heat conductor 002, thereby achieving heating of the preheating heat conductor 001 and the melting heat conductor 002. The melting heat conductor 002 is connected to the nozzle 003, and the molten consumables can be extruded to the target position through the nozzle 003. In addition, the inlet end of the consumable channel 100 is connected to the throat 005 through the connector 006, and the throat 005 is connected to the heat sink 007. The connector 006 and the heat sink 007 can both adopt a snap connection or a threaded connection structure. The heat sink 007 can reduce the heat transferred to the consumables that have not entered the throat 005, thereby preventing the consumables on the supply side from being softened by heat, and avoiding the consumables from being unable to enter the throat 005 smoothly due to premature softening. The 3D printer recorded in this embodiment has the technical effects of the above-mentioned 3D printing consumables heat-conducting device, which will not be repeated here.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A 3D printing consumables heat conducting device, characterized in that: The 3D printing consumables heat conducting device is provided with a consumables channel; In a cross section perpendicular to the extending direction of the consumable channel, the consumable channel has an inwardly protruding tip and a contact surface opposite to the tip; When the printing consumables are input along the consumables channel, the pointed portion penetrates the printing consumables and pushes the printing consumables to adhere to the contact surface.

2. The 3D printing consumables heat conducting device according to claim 1, characterized in that: The tip portion is inclined toward the inner side of the consumables channel along the input direction of the printing consumables.

3. The 3D printing consumables heat conducting device according to claim 1, characterized in that: The contact surface is inclined toward the tip along the input direction of the printing consumables.

4. The 3D printing consumables heat conducting device according to claim 1, characterized in that: The contact surface includes: a first inclined surface and a second inclined surface; The first inclined surface and the second inclined surface have an included angle.

5. The 3D printing consumables heat conducting device according to claim 4, characterized in that: The tip is symmetrical with respect to a bisector of an angle between the first inclined surface and the second inclined surface.

6. The 3D printing consumables heat conducting device according to claim 1, characterized in that: There are multiple tip portions, which are spaced apart on a cross section perpendicular to the extending direction of the consumables channel and extend along the consumables channel respectively.

7. The 3D printing consumables heat conducting device according to claim 1, characterized in that: The contact surface is a conical surface, and the radial dimension of the conical surface decreases along the input direction of the consumable channel.

8. The 3D printing consumables heat conducting device according to claim 1, characterized in that: The contact surfaces are arranged at intervals around the consumable material channel, and the contact surfaces are provided with grooves.

9. The 3D printing consumables heat conducting device according to any one of claims 1 to 8, characterized in that: The 3D printing consumables heat conducting device includes: a preheating heat conducting component and a melting heat conducting component; The consumables channel is provided on the preheating heat conducting member; The melting heat-conducting component is connected to the preheating heat-conducting component, and the melting heat-conducting component is provided with a melting flow channel communicated with the consumable channel.

10. A 3D printer, characterized in that: The 3D printer is equipped with the 3D printing consumables heat conducting device according to any one of claims 1 to 9.

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