Additive auxiliary feeding mechanism for 3D printing

Abstract

The utility model relates to an additive auxiliary feeding mechanism for 3D printing, which belongs to the technical field of 3D printing and comprises a feeding shell, a heating pipe is fixedly mounted at the bottom of the feeding shell, a heating wire is fixedly mounted in the heating pipe, a cooling cavity is formed in the heating pipe, and the cooling cavity is communicated with the feeding shell. A cooling outlet pipe is fixedly installed at the position, close to the top end, of one side of the heating pipe, a circulating pump is fixedly installed at the top of the feeding shell, a circulating communicating pipe communicating with the cooling outlet pipe is fixedly installed at the input end of the circulating pump, and a preheating pipe is fixedly installed at the top of the feeding shell. According to the additional material auxiliary feeding mechanism for 3D printing, a preheating pipe is arranged at the top of the feeding shell, a cooling cavity is formed in a heating pipe, cooling water in the cooling cavity communicates with a preheating cavity in the preheating pipe, the cooling water absorbing heat of the heating pipe preheats a 3D printing material in the preheating pipe, the heat of a heating wire is fully utilized, and the heat of the heating wire is fully utilized; and the 3D printing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, concretely is a kind of additive auxiliary feeding mechanism for 3D printing. BACKGROUND

[0002] 3D printing, also known as additive manufacturing or rapid prototyping, is an innovative manufacturing process that allows the direct creation of three-dimensional physical objects from digital models. 3D printing is a manufacturing technique that builds three-dimensional objects by layering materials, based on digital model files, using various materials such as plastics, metals, ceramics, etc. for printing, among which, FDM technology forms objects by heating and extruding thermoplastic materials.

[0003] 3D printing additive auxiliary feeding mechanism refers to the equipment or components used for precise delivery and control of printing materials during the 3D printing process. This mechanism usually includes a feeding motor, a feeding gear, a feeding tube and related sensors and control systems. The feeding motor drives the feeding gear to rotate, and the feeding gear pulls the printing materials out of the storage through friction and delivers them to the printing head or working area through the feeding tube.

[0004] 3D printing technology is widely used today, and the additive spooling printing technology used initially has been used down, for example: ABS or PLA material additive filaments are wound into a disc, and fed to the hot melt spooling assembly through the quantitative feeding assembly, and then extruded into a fine filament after heating, and then laid, bonded and cooled to set, but during the heating and extrusion of thermoplastic materials, cooling is needed at the heating part, and the common cooling device is through air cooling, which causes the heating component to lose too much heat, therefore, the present application proposes a 3D printing additive auxiliary feeding mechanism. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a 3D printing additive auxiliary feeding mechanism, which has the advantages of preheating the printing materials using the waste heat of the heating component, and solves the problem of cooling and heat dissipation at the heating part during the heating and extrusion of thermoplastic materials, and the common cooling device is through air cooling, which causes the heating component to lose too much heat.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: an additive auxiliary feeding mechanism for 3D printing, feeding shell is fixedly installed with heating tube on the bottom, heating wire is fixedly installed in the inside of heating tube, cooling cavity is opened in the inside of heating tube, cooling outlet pipe is fixedly installed on the position close to the top end of one side of heating tube, circulating pump is fixedly installed on the top of feeding shell, circulating communication pipe which is linked with cooling outlet pipe is fixedly installed on the input end of circulating pump, preheating pipe is fixedly installed on the top of feeding shell, preheating inlet pipe which is fixedly connected with the output end of circulating pump is fixedly installed on the position close to the bottom end of one side of preheating pipe, and preheating cavity is opened in the inside of preheating pipe.

[0007] Further, the side of the feeding shell is fixedly installed with a heat dissipation shell, and the inner side wall of the heat dissipation shell is fixedly installed with a heat dissipation fine tube.

[0008] Further, the top of the heat dissipation shell is fixedly installed with a heat dissipation inlet pipe in communication with the input end of the heat dissipation fine tube, a preheating outlet pipe is fixedly installed on the position close to the top end of one side of the preheating pipe, and the heat dissipation inlet pipe and the preheating outlet pipe are in communication through a reflux pipe.

[0009] Further, the bottom of the heat dissipation shell is fixedly installed with a heat dissipation outlet pipe in communication with the output end of the heat dissipation fine tube, and a cooling inlet pipe is fixedly installed on the position close to the bottom end of one side of the heating pipe, and the heat dissipation outlet pipe and the cooling inlet pipe are in communication through a cooling communication pipe.

[0010] Further, the side of the feeding shell is fixedly installed with a heat dissipation fan, the heat dissipation fan is located in the inside of the heat dissipation shell, the side of the heat dissipation shell is fixedly installed with a heat dissipation mesh plate, and the surface of the heat dissipation shell is provided with an air inlet mesh hole.

[0011] Further, the inner side wall of the feeding shell is rotatably installed with two extrusion wheels, and the side of the feeding shell is rotatably installed with a driving gear fixedly connected with one of the extrusion wheels.

[0012] Further, the side of the feeding shell is rotatably installed with a driven gear engaged with the driving gear, the side of the feeding shell is fixedly installed with a mounting bracket, the side of the mounting bracket is fixedly installed with a driving motor with one side of the output shaft fixedly connected with the driving gear, and the bottom end of the heating pipe is fixedly installed with a discharge head.

[0013] Compared with the prior art, the utility model provides an additive auxiliary feeding mechanism for 3D printing, which has the following beneficial effects:

[0014] The additive auxiliary feeding mechanism for 3D printing, by setting the preheating pipe on the top of the feeding shell, by setting the cooling cavity inside the heating pipe, the cooling water in the cooling cavity is communicated with the preheating cavity inside the preheating pipe, the 3D printing material is preheated in the preheating pipe by the cooling water absorbing the heat of the heating pipe, the heat of the heating wire is fully utilized, the efficiency of 3D printing is increased, and the problem that excessive heat of the heating component is wasted when the thermoplastic material is heated and extruded and cooling is needed at the heating position is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structure schematic view of the utility model;

[0016] Fig. 2 It is a structure front view of the utility model;

[0017] Fig. 3 It is a heat dissipation shell side view of the utility model;

[0018] Fig. 4 It is a heat dissipation shell three-dimensional view of the utility model.

[0019] In the drawing: 1, feeding shell; 2, heating pipe; 201, cooling cavity; 3, heating wire; 4, cooling outlet pipe; 5, circulating pump; 6, circulating communication pipe; 7, preheating pipe; 8, preheating inlet pipe; 9, preheating cavity; 10, heat dissipation shell; 11, heat dissipation fine pipe; 12, heat dissipation inlet pipe; 13, preheating outlet pipe; 14, backflow pipe; 15, heat dissipation outlet pipe; 16, cooling inlet pipe; 17, cooling communication pipe; 18, heat dissipation fan; 19, heat dissipation mesh plate; 20, air inlet mesh hole; 21, extrusion wheel; 22, driving gear; 23, driven gear; 24, mounting bracket; 25, driving motor; 26, discharge head. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figs. 1 to 4The utility model provides an additive auxiliary feeding mechanism for 3D printing, which comprises a feeding shell 1, a heating pipe 2 fixedly installed at the bottom of the feeding shell 1, a heating wire 3 fixedly installed inside the heating pipe 2, a cooling cavity 201 formed in the heating pipe 2, a cooling outlet pipe 4 fixedly installed at the position close to the top end of one side of the heating pipe 2, a circulating pump 5 fixedly installed at the top of the feeding shell 1, a circulating communication pipe 6 fixedly installed at the input end of the circulating pump 5 and connected with the cooling outlet pipe 4, a preheating pipe 7 fixedly installed at the top of the feeding shell 1, a preheating inlet pipe 8 fixedly installed at the position close to the bottom end of one side of the preheating pipe 7 and fixedly connected with the output end of the circulating pump 5, and a preheating cavity 9 formed in the preheating pipe 7.

[0022] Cooling liquid is added in the cooling cavity 201, and the cooling liquid after absorbing heat is transmitted to the preheating pipe 7 through the circulating pump 5, so that the 3D printing material is preheated when passing through the preheating pipe 7, thereby improving the efficiency of 3D printing.

[0023] Meanwhile, a heat dissipation shell 10 is fixedly installed at one side of the feeding shell 1, and a heat dissipation thin pipe 11 is fixedly installed at the inner side wall of the heat dissipation shell 10.

[0024] The top of the heat dissipation shell 10 is fixedly installed with a heat dissipation inlet pipe 12 connected with the input end of the heat dissipation thin pipe 11, the preheating pipe 7 is fixedly installed with a preheating outlet pipe 13 at the position close to the top end of one side, and the heat dissipation inlet pipe 12 and the preheating outlet pipe 13 are connected through a backflow pipe 14.

[0025] Secondly, a heat dissipation outlet pipe 15 connected with the output end of the heat dissipation thin pipe 11 is fixedly installed at the bottom of the heat dissipation shell 10, and a cooling inlet pipe 16 is fixedly installed at the position close to the bottom end of one side of the heating pipe 2, and the heat dissipation outlet pipe 15 and the cooling inlet pipe 16 are connected through a cooling communication pipe 17.

[0026] A heat dissipation fan 18 is fixedly installed at one side of the feeding shell 1, the heat dissipation fan 18 is located in the heat dissipation shell 10, a heat dissipation mesh plate 19 is fixedly installed at one side of the heat dissipation shell 10, and air inlet mesh holes 20 are formed in the surface of the heat dissipation shell 10. When the heat dissipation fan 18 is started, air enters from the air inlet mesh holes 20, blows through the heat dissipation thin pipe 11, and is cooled.

[0027] Meanwhile, two extrusion wheels 21 are rotatably installed at the inner side wall of the feeding shell 1, and a driving gear 22 fixedly connected with one of the extrusion wheels 21 is rotatably installed at one side of the feeding shell 1.

[0028] The side of the feeding shell 1 is rotatably provided with a driven gear 23 engaged with the driving gear 22, the side of the feeding shell 1 is fixedly provided with a mounting bracket 24, the side of the mounting bracket 24 is fixedly provided with a driving motor 25 with the output shaft fixedly connected with the side of the driving gear 22, and the bottom end of the heating pipe 2 is fixedly provided with a discharging head 26. The 3D printing material is located between the two extruding wheels 21, the driving motor 25 drives the driving gear 22 to rotate, drives the driven gear 23 to rotate, and drives the two extruding wheels 21 to synchronously rotate, so that the 3D printing material is output to the heating pipe 2, and is output from the discharging head 26 after being melted.

[0029] In use, the 3D printing material is located between the two extruding wheels 21, the driving motor 25 drives the driving gear 22 to rotate, drives the driven gear 23 to rotate, and drives the two extruding wheels 21 to synchronously rotate, so that the 3D printing material is output to the heating pipe 2, and is output from the discharging head 26 after being melted, the cooling liquid is added in the cooling cavity 201, the cooling liquid after absorbing heat is transmitted to the preheating pipe 7 through the circulating pump 5, and the 3D printing material is preheated when passing through the preheating pipe 7, so that the efficiency of 3D printing is improved.

[0030] The electrical elements in the text are electrically connected with the master controller and the power supply, the master controller can be a conventional known device such as a computer for control, and the existing disclosed power connection technology is not described herein.

[0031] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An additive assisted feeding mechanism for 3D printing comprising a feeding housing (1) characterized in that: The bottom of the feeding shell (1) is fixedly installed with a heating pipe (2), the inside of the heating pipe (2) is fixedly installed with a heating wire (3), the inside of the heating pipe (2) is provided with a cooling cavity (201), one side of the heating pipe (2) is fixedly installed with a cooling outlet pipe (4) near the top end, the top of the feeding shell (1) is fixedly installed with a circulating pump (5), the input end of the circulating pump (5) is fixedly installed with a circulating communication pipe (6) in communication with the cooling outlet pipe (4), the top of the feeding shell (1) is fixedly installed with a preheating pipe (7), one side of the preheating pipe (7) is fixedly installed with a preheating inlet pipe (8) fixedly connected with the output end of the circulating pump (5), the inside of the preheating pipe (7) is provided with a preheating cavity (9).

2. The additive assisted feeding mechanism for 3D printing as claimed in claim 1, wherein: One side of the feeding shell (1) is fixedly installed with a heat dissipation shell (10), and the inner side wall of the heat dissipation shell (10) is fixedly installed with a heat dissipation fine pipe (11).

3. The additive assisted feeding mechanism for 3D printing as claimed in claim 2, wherein: The top of the heat dissipation shell (10) is fixedly installed with a heat dissipation inlet pipe (12) in communication with the input end of the heat dissipation fine pipe (11), one side of the preheating pipe (7) is fixedly installed with a preheating outlet pipe (13) near the top end, and the heat dissipation inlet pipe (12) and the preheating outlet pipe (13) are communicated through a backflow pipe (14).

4. The additive assisted feeding mechanism for 3D printing as claimed in claim 2, wherein: The bottom of the heat dissipation shell (10) is fixedly installed with a heat dissipation outlet pipe (15) in communication with the output end of the heat dissipation fine pipe (11), one side of the heating pipe (2) is fixedly installed with a cooling inlet pipe (16) near the bottom end, and the heat dissipation outlet pipe (15) and the cooling inlet pipe (16) are communicated through a cooling communication pipe (17).

5. The additive assisted feeding mechanism for 3D printing as claimed in claim 2, wherein: One side of the feeding shell (1) is fixedly installed with a heat dissipation fan (18), the heat dissipation fan (18) is located in the inside of the heat dissipation shell (10), one side of the heat dissipation shell (10) is fixedly installed with a heat dissipation mesh plate (19), and the surface of the heat dissipation shell (10) is provided with an air inlet mesh hole (20).

6. The additive assisted feeding mechanism for 3D printing as claimed in claim 1, wherein: The inner side wall of the feeding shell (1) is rotatably installed with two extrusion wheels (21), and one side of the feeding shell (1) is rotatably installed with a driving gear (22) fixedly connected with one of the extrusion wheels (21).

7. The additive assisted feeding mechanism for 3D printing as claimed in claim 6, wherein: One side of the feeding shell (1) is rotatably installed with a driven gear (23) engaged with the driving gear (22), one side of the feeding shell (1) is fixedly installed with a mounting bracket (24), one side of the mounting bracket (24) is fixedly installed with a drive motor (25) with one side of the driving gear (22) fixedly connected, and the bottom end of the heating pipe (2) is fixedly installed with a discharge head (26).

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