CN210026327U - Feeding device for 3D printer - Google Patents

Abstract

The utility model discloses a feeding device for a 3D printer, which comprises a melting barrel with a cavity inside, wherein the upper end of the melting barrel is hermetically connected with a rear cover for sealing the cavity; the melting barrel is of a double-layer hollow structure, and a heating device is arranged in the middle of an interlayer of the melting barrel; the lower end of the melting barrel is fixedly connected with an extruding box, and a cavity of the melting barrel is communicated with a cavity inside the extruding box; the cavity of the material extruding box is internally provided with a material extruding device connected with the driving device, and the material extruding device is a pair of gears which are meshed with each other; the lower end of the material extruding box is fixedly connected with a spray head which is communicated with the inner cavity of the material extruding box. The utility model discloses having set up a double-deck cavity melting cylinder of taking heating device, melting cylinder capacity is bigger simultaneously, has saved the process of frequent reloading, uses a pair of relative meshed gear as extrusion device simultaneously, and the raw materials that make to extrude are more even.

Description

Feeding device for 3D printer

Technical Field

The utility model relates to a 3D printer technical field, concretely relates to a material feeding unit for 3D printer.

Background

A 3D printer, also known as a three-dimensional printer (3DP), is a machine that is an additive manufacturing technique, i.e., a rapid prototyping technique, which is based on a digital model file, and manufactures a three-dimensional object by printing a layer of adhesive material on a layer by layer using an adhesive material such as a special wax material, powdered metal, or plastic. The 3D printer differs from the traditional printer in that the "ink" it uses is a real raw material.

The existing 3D printer needs to melt raw materials and then add the raw materials into a feeding device, and generally adopts a screw extrusion device, if the raw materials are not melted completely, the extruded raw materials are not uniform, and frequent material changing and feeding processes are needed, so that the printer is very troublesome.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a material feeding unit for 3D printer, it has solved current 3D printer crowded material inhomogeneous, the trouble problem of feeding reloading.

In order to achieve the purpose of the invention, the utility model adopts the technical scheme that:

the feeding device for the 3D printer comprises a melting barrel with a cavity inside, wherein the upper end of the melting barrel is connected with a rear cover for sealing the cavity in a sealing manner; the melting barrel is of a double-layer hollow structure, and a heating device is arranged in the middle of an interlayer of the melting barrel; the lower end of the melting barrel is fixedly connected with an extruding box, and a cavity of the melting barrel is communicated with a cavity inside the extruding box; the cavity of the material extruding box is internally provided with a material extruding device connected with the driving device, and the material extruding device is a pair of gears which are meshed with each other; the lower end of the material extruding box is fixedly connected with a spray head which is communicated with the inner cavity of the material extruding box.

Preferably, the internal cavity of the headbox matches the shape of a pair of meshing gears.

Preferably, a boss is arranged at the center of each of the two side surfaces of the gear; the inner side wall opposite to the extrusion box is provided with a groove in movable fit with bosses on two sides of one gear, a groove in movable fit with bosses on two sides of the other gear and a through hole, and a rotating shaft of the driving device extends into the through hole and is connected with the bosses in the through hole.

Preferably, the driving device is a driving motor, and the driving motor penetrates through a through hole in the extruding box through a rotating shaft and is connected with a boss of the gear.

Preferably, the inner layer of the melting cylinder is aluminum alloy, and the outer layer is a vacuum insulation plate.

Preferably, the heating device is an electric heating tube wound on the circumference of the inner layer of the melt cylinder.

Preferably, the lower end of the melting barrel is provided with a funnel nozzle, and the funnel nozzle is connected with the material extruding box through threads.

Preferably, the funnel mouth is also provided with a valve.

Preferably, the spray head is connected with the extrusion box through threads.

Preferably, the spray head is a chocolate printing spray head or a pancake printing spray head.

The utility model has the advantages that: this scheme has set up heating device in the melt section of thick bamboo, can directly heat the raw materials and melt, and convenient material changing feeding operation, the melt section of thick bamboo possess a great cavity of storing the raw materials, can avoid frequently feeding in raw materials, gear extrusion device makes the raw materials of extruding more even, has effectively solved the crowded material of current 3D printer inhomogeneous, and the feeding reloads trouble problem.

Drawings

Fig. 1 is a schematic structural diagram of a feeding device for a 3D printer.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is a schematic view of gear engagement.

Wherein: 1. a melting barrel; 2. a material extruding box; 3. a spray head; 4. a gear; 5. a drive motor; 6. an electric heating tube; 7. a funnel mouth; 8. a valve; 9. a rear cover; 10. and (4) a boss.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in fig. 1 to 4, a feeding device for a 3D printer includes a melting cylinder 1 with a cavity inside, a rear cover 9 for sealing the cavity is connected to the upper end of the melting cylinder 1 in a sealing manner, and the rear cover 9 is connected with the melting cylinder 1 through threads, so that the feeding device is convenient to disassemble and assemble and is convenient to feed.

The melting barrel 1 is of a double-layer hollow structure, a heating device is arranged in the middle of an interlayer of the melting barrel 1, raw materials can be directly placed into the melting barrel 1 to be melted through the heating device, and operation is convenient.

The lower extreme fixedly connected with of melting cylinder 1 crowded workbin 2, melting cylinder 1 inner space is linked together with crowded workbin 2 inside cavity, and crowded material device that is connected with drive arrangement is provided with in the inside of crowded workbin 1, and crowded material device is a pair of intermeshing gear 4, and a pair of meshing gear 4 can be extruded the raw materials that do not heat completely and melt and refine, makes the raw materials extruded more even, and crowded workbin 2 lower extreme fixedly connected with shower nozzle 3, shower nozzle 3 is linked together with crowded workbin 2 inside cavity.

The cavity in the extruding box 2 is matched with the shape of the pair of meshed gears 4, bosses 10 are arranged at the central positions of two side faces of each gear 4, a groove which is movably matched with the boss 10 on two sides of one gear 4 and a groove and a through hole which are movably matched with the boss 10 on two sides of the other gear 4 are formed in the opposite inner side wall of the extruding box 2, and a rotating shaft of the driving device extends into the through hole to be connected with the boss 10 in the through hole.

The driving device is a driving motor 5, the driving motor 5 penetrates through a through hole in the extruding box 2 through a rotating shaft to be connected with a boss 10 of the gear 4, and the driving motor 5 drives the gear 4 to rotate to extrude the raw materials.

The melting barrel 1 is divided into an inner layer and an outer layer, the inner layer is made of aluminum alloy, and the outer layer is made of a vacuum heat insulation plate, so that an operator cannot be scalded outside, the temperature inside is rapidly increased, and heat is not easy to dissipate.

The heating device is an electric heating tube 6 wound on the circumference of the inner layer of the melting barrel 1, and the electric heating tube 6 is uniformly wound on the inner layer of the melting barrel 1, so that the heating is faster and more uniform.

The lower end of the melting barrel 2 is provided with a funnel nozzle 7, raw materials which are heated and melted can flow into the inner cavity of the extruding box 2 more easily, and the funnel nozzle 7 is connected with the extruding box 2 through threads.

The funnel mouth 7 is provided with a valve 8 which can control the flow of the raw materials at any time, the spray head 3 is connected with the material extruding box 2 through threads, and the spray head 3 is a chocolate printing spray head or a pancake printing spray head which can be replaced at any time to meet different printing requirements.

The utility process that a material feeding unit for 3D printer that this scheme provided is:

the raw materials are added into the melting barrel 1, the electric heating tube 6 is electrified to heat the melting barrel 1, and the raw materials are melted. The driving motor 5 is electrified to drive the gear 4 to rotate, the gear 4 extrudes the raw materials into the nozzle 3 through rotation, and simultaneously the incompletely melted raw materials can be refined, so that the extruded raw materials are more uniform. When the raw material is not required to be extruded, the driving motor 5 and the electric heating tube 6 are closed, and the valve 8 is closed, so that the feeding can be stopped.

To sum up, the utility model discloses simple structure has adopted gear engagement's mode to extrude the raw materials, makes the raw materials of extruding more even, and a melt section of thick bamboo and the setting of electrothermal tube make the raw materials can directly melt in the device, have made things convenient for reinforced reloading process, avoid the repeated reinforced operation that carries on.

Claims (10)

1. The utility model provides a material feeding unit for 3D printer which characterized in that: the melting furnace comprises a melting furnace barrel (1) with a cavity inside, wherein the upper end of the melting furnace barrel (1) is connected with a rear cover (9) for sealing the cavity in a sealing way; the melting barrel (1) is of a double-layer hollow structure, and a heating device is arranged in the middle of an interlayer of the melting barrel (1); the lower end of the melting barrel (1) is fixedly connected with an extruding box (2), and a cavity of the melting barrel (1) is communicated with a cavity in the extruding box (2); a material extruding device connected with a driving device is arranged in the cavity of the material extruding box (2), and the material extruding device is a pair of gears (4) which are meshed with each other; the lower end of the material extruding box (2) is fixedly connected with a spray head (3), and the spray head (3) is communicated with a cavity inside the material extruding box (2).

2. The feeding device for a 3D printer according to claim 1, characterized in that: the internal cavity of the extrusion box (2) is matched with the shape of the pair of meshed gears (4).

3. The feeding device for a 3D printer according to claim 2, characterized in that: a boss (10) is arranged at the center of each of the two side surfaces of the gear (4); the inner side wall opposite to the extruding box (2) is provided with a groove which is movably matched with bosses (10) on two sides of one gear (4) and a groove and a through hole which are movably matched with bosses (10) on two sides of the other gear, and a rotating shaft of the driving device extends into the through hole and is connected with the bosses (10) which are positioned in the through hole.

4. The feeding device for a 3D printer according to claim 3, characterized in that: the driving device is a driving motor (5).

5. The feeding device for a 3D printer according to claim 1, characterized in that: the inner layer of the melting barrel (1) is made of aluminum alloy, and the outer layer of the melting barrel is made of a vacuum heat insulation plate.

6. The feeding device for a 3D printer according to claim 4, characterized in that: the heating device is an electric heating tube (6) wound on the circumference of the inner layer of the melting barrel (1).

7. The feeding device for a 3D printer according to claim 1, characterized in that: the lower end of the melting barrel (1) is provided with a funnel nozzle (7), and the funnel nozzle (7) is connected with the material extruding box (2) through threads.

8. The feeding device for a 3D printer according to claim 7, characterized in that: the funnel mouth (7) is provided with a valve (8).

9. The feeding device for a 3D printer according to claim 1, characterized in that: the spray head (3) is connected with the extrusion box (2) through threads.

10. The feeding device for a 3D printer according to claim 1, characterized in that: the spray head (3) is a chocolate printing spray head or a pancake printing spray head.

Images