Novel 3D printer particle extruder

Abstract

The utility model discloses a novel 3D printer particle extruder, which comprises a stock bin in which a rotatable extrusion screw is mounted, and is characterized in that a motor is mounted at the upper part of the stock bin, the power output end of the motor is connected with the extrusion screw, the discharge end of the stock bin is provided with an extrusion channel, the extrusion screw extends into the extrusion channel, and the extrusion channel is communicated with the extrusion screw. A nozzle is installed at the discharging end of the extrusion channel, a heating block corresponding to the nozzle is installed on the extrusion channel, a cooling fan is installed on the stock bin, multiple sets of cooling channels corresponding to the extrusion channel are installed at the air outlet end of the cooling fan, and the air outlet ends of the multiple sets of cooling channels correspond to the discharging end of the nozzle. And by arranging the cooling fan and the cooling channel, the circulation speed of air around the nozzle can be increased, so that heat dissipation of a material extruded and molded by the nozzle is accelerated, the extruded material is rapidly cured and molded, and the molding quality of the 3D printer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a novel 3D printer particle extruder. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a kind of machine of cumulative manufacturing technology, that is, rapid prototyping technology. It is based on a digital model file, using special wax materials, powdered metal or plastic and other adhesive materials to print layers of adhesive materials to make three-dimensional objects. At present, 3D printers are used to manufacture products. The technology of constructing objects by printing layer by layer. The principle of 3D printer is to put data and raw materials into the 3D printer, and the machine will make the product layer by layer according to the program.

[0003] During 3D printing with some existing pellet extruders, the printing material becomes soft due to high temperature during the extrusion process and cannot solidify quickly after molding. It is easy to deform after extrusion, making it difficult for the material to maintain the printed shape, thus affecting the printing quality. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of some existing particle extruders in the process of 3D printing, that is, the printing material becomes soft due to high temperature during the extrusion process and cannot be quickly solidified after molding, and is easily deformed after extrusion, which makes it difficult for the material to maintain the printed shape, thereby affecting the printing quality, and to provide a new type of 3D printer particle extruder.

[0005] The purpose of the utility model is achieved through the following technical solutions: a new type of 3D printer particle extruder, including a silo, a rotatable extrusion screw is installed in the silo, and its characteristics are: a motor is installed on the upper part of the silo, the power output end of the motor is connected to the extrusion screw, an extrusion channel is installed at the discharge end of the silo, the extrusion screw extends into the extrusion channel, a nozzle is installed at the discharge end of the extrusion channel, a heating block corresponding to the nozzle is installed on the extrusion channel, a cooling fan is installed on the silo, and a plurality of groups of cooling channels corresponding to the extrusion channels are installed at the air outlet end of the cooling fan, and the air outlet ends of the plurality of cooling channels correspond to the discharge end of the nozzle. By arranging the cooling fan and the cooling channel, the circulation speed of the air around the nozzle can be increased, thereby accelerating the heat dissipation of the material extruded by the nozzle, and making the extruded material quickly solidify and mold, thereby improving the molding quality of the 3D printer.

[0006] A further technical solution is that the extrusion screw is tapered in the extrusion channel and is narrow at the top and wide at the bottom, and the pitch of the thread on the extrusion screw is wide at the top and narrow at the bottom. By setting the extrusion screw to be tapered in the extrusion channel and being narrow at the top and wide at the bottom, and coordinating the pitch of the thread on the extrusion screw to be wide at the top and narrow at the bottom, the flow speed of the printing material in the extrusion channel can be increased, thereby achieving a faster printing speed and improving the practicality of the equipment.

[0007] A further technical solution is that multiple groups of heat dissipation channels are arranged in a circular array about the nozzles, and the air inlet and air outlet ends of the heat dissipation channels are designed to be wide at the top and narrow at the bottom. Multiple groups of heat dissipation channels arranged in a circular array about the nozzles can evenly cool the formed extruded materials and ensure the cooling effect on the printed materials. The air inlet and air outlet ends of the heat dissipation channels are designed to be wide at the top and narrow at the bottom to increase the wind speed at the air outlet end, thereby improving the cooling and solidification effect on the printed materials.

[0008] A further technical solution is that a temperature sensor electrically connected to the heating block is installed on the extrusion channel. The temperature sensor can control the temperature of the heating block more accurately, thereby ensuring the printing quality and facilitating the printing of materials that are very sensitive to temperature. The device can print and process various types of raw materials, thereby improving the applicability of the equipment.

[0009] A further technical solution is that a feed pipe is installed on one side of the extrusion screw, and a transparent observation plate is installed on the extrusion screw. By installing the transparent observation plate, the internal consumables remaining amount can be observed, which is convenient for timely adding consumables.

[0010] A further technical solution is that the power output end of the motor is connected to the extrusion screw through a reducer. By setting the reducer, the rotation speed can be reduced, the output torque can be increased, the load can be reduced, and the smooth operation of the equipment can be ensured.

[0011] A further technical solution is that a material-blocking flap is installed between the silo and the extrusion channel, and the material-blocking flap can prevent the material in the extrusion channel from returning to the silo.

[0012] The utility model has the following advantages: the utility model can increase the circulation speed of air around the nozzle by arranging a cooling fan and a cooling channel, thereby accelerating the heat dissipation of the material extruded by the nozzle, allowing the extruded material to be quickly solidified and formed, thereby improving the molding quality of the 3D printer; by arranging the extrusion screw to be tapered in the extrusion channel with a narrow upper and wide lower shape and coordinating the pitch of the thread on the extrusion screw to be wide upper and narrow lower, the flow speed of the printing material in the extrusion channel can be increased, a faster printing speed can be achieved, and the practicality of the equipment can be improved; the temperature sensor can be arranged to control the temperature of the heating block more accurately, thereby ensuring the printing quality, facilitating the printing of materials that are very sensitive to temperature, enabling the equipment to print and process various types of raw materials, and improving the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0014] Figure 2 This is a front view structural schematic diagram of the utility model;

[0015] Figure 3It is a side view structural schematic diagram of the utility model;

[0016] In the figure, 1. silo; 2. extrusion screw; 3. material stopper; 4. heating block; 5. temperature sensor; 6. cooling fan; 7. cooling channel; 8. nozzle; 9. motor; 10. reducer; 11. feed pipe. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1~Figure 3As shown, the novel 3D printer particle extruder comprises a silo 1, in which a rotatable extrusion screw 2 is installed, and the characteristics are as follows: a motor 9 is installed on the upper part of the silo 1, the power output end of the motor 9 is connected to the extrusion screw 2, an extrusion channel is installed at the discharge end of the silo 1, the extrusion screw 2 extends into the extrusion channel, a nozzle 8 is installed at the discharge end of the extrusion channel, a heating block 4 corresponding to the nozzle 8 is installed on the extrusion channel, a cooling fan 6 is installed on the silo 1, a plurality of cooling channels 7 corresponding to the extrusion channels are installed at the air outlet end of the cooling fan 6, and the air outlet ends of the plurality of cooling channels 7 are all connected to the nozzle 8 The discharge end of the extruder 1 corresponds to the discharge end of the extruder 1. By arranging the cooling fan 6 and the cooling channel 7, the circulation speed of the air around the nozzle 8 can be increased, thereby accelerating the heat dissipation of the material extruded by the nozzle 8, so that the extruded material can be quickly solidified and formed, thereby improving the molding quality of the 3D printer. A material blocking flap 3 is installed between the silo 1 and the extrusion channel. The material blocking flap 3 can prevent the material in the extrusion channel from returning to the silo 1. The extrusion screw 2 is tapered in the extrusion channel with a narrow top and a wide bottom. The pitch of the thread on the extrusion screw 2 is wide at the top and narrow at the bottom. By arranging the extrusion screw 2 in the extrusion channel with a narrow top and a wide bottom, the thread on the extrusion screw 2 can be matched. The pitch is wide at the top and narrow at the bottom, which can increase the flow speed of the printing material in the extrusion channel, achieve faster printing speed, and improve the practicality of the equipment. The multiple groups of heat dissipation channels 7 are arranged in a circular array about the nozzle 8. The air inlet end and the air outlet end of the heat dissipation channel 7 are designed to be wide at the top and narrow at the bottom. The multiple groups of heat dissipation channels 7 are arranged in a circular array about the nozzle 8, which can evenly cool the formed extruded material and ensure the cooling effect on the printing material. The air inlet end and the air outlet end of the heat dissipation channel 7 are designed to be wide at the top and narrow at the bottom, which can speed up the wind speed at the air outlet end, thereby improving the cooling and curing effect on the printing material. A temperature sensor 5 electrically connected to the heating block 4 is installed on the extrusion channel. The temperature sensor 5 is provided to control the temperature of the heating block 4 more accurately, thereby ensuring the printing quality and facilitating the printing of materials that are very sensitive to temperature, so that the equipment can print and process various types of raw materials, thereby improving the applicability of the equipment. A feed pipe 11 is installed on one side of the extrusion screw 2, and a transparent observation plate is installed on the extrusion screw 2. By installing the transparent observation plate, the internal consumables remainder can be observed, which is convenient for timely adding consumables. The power output end of the motor 9 is connected to the extrusion screw 2 through the reducer 10. By providing the reducer 10, the rotation speed can be reduced, the output torque can be increased, the load can be reduced, and the smooth operation of the equipment can be ensured.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel 3D printer pellet extruder, comprising a silo (1), wherein a rotatable extrusion screw (2) is installed in the silo (1), characterized in that: A motor (9) is installed on the upper part of the silo (1), the power output end of the motor (9) is connected to the extrusion screw (2), the discharge end of the silo (1) is installed with an extrusion channel, the extrusion screw (2) extends into the extrusion channel, the discharge end of the extrusion channel is installed with a nozzle (8), the extrusion channel is installed with a heating block (4) corresponding to the nozzle (8), the silo (1) is installed with a cooling fan (6), the air outlet end of the cooling fan (6) is installed with a plurality of cooling channels (7) corresponding to the extrusion channels, and the air outlet ends of the plurality of cooling channels (7) correspond to the discharge end of the nozzle (8).

2. The novel 3D printer particle extruder according to claim 1, characterized in that: The extrusion screw (2) is in a tapered shape in the extrusion channel, being narrow at the top and wide at the bottom; the pitch of the thread on the extrusion screw (2) is wide at the top and narrow at the bottom.

3. The novel 3D printer particle extruder according to claim 1, characterized in that: The plurality of heat dissipation channels (7) are arranged in a circular array about the nozzle (8), and the air inlet end and the air outlet end of the heat dissipation channel (7) are designed to be wide at the top and narrow at the bottom.

4. The novel 3D printer particle extruder according to claim 1, characterized in that: A temperature sensor (5) electrically connected to the heating block (4) is installed on the extrusion channel.

5. The novel 3D printer particle extruder according to claim 1, characterized in that: A feed pipe (11) is installed on one side of the extrusion screw (2), and a transparent observation plate is installed on the extrusion screw (2).

6. The novel 3D printer particle extruder according to claim 1, characterized in that: The power output end of the motor (9) is connected to the extrusion screw (2) via a reducer (10).

7. The novel 3D printer particle extruder according to claim 1, characterized in that: A material blocking flap (3) is installed between the material bin (1) and the extrusion channel.

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