CN210415534U - 3D printer extrusion mechanism - Google Patents
3D printer extrusion mechanism Download PDFInfo
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- CN210415534U CN210415534U CN201921404931.2U CN201921404931U CN210415534U CN 210415534 U CN210415534 U CN 210415534U CN 201921404931 U CN201921404931 U CN 201921404931U CN 210415534 U CN210415534 U CN 210415534U
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- extrusion mechanism
- screw rod
- extruder
- elbow
- extruder shell
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Abstract
The utility model provides a 3D printer extrusion mechanism, including storage bucket, storage bucket lid, step motor, shaft coupling, screw rod, extruder shell, shower nozzle, step motor with the screw rod passes through shaft coupling fixed connection, the screw rod set up in the extruder shell, the shower nozzle set up in extruder shell discharge gate department, the nozzle connect in the shower nozzle below, 3D printer extrusion mechanism still includes the elbow, elbow one end with storage bucket threaded connection, the other end with extruder shell threaded connection. The bent pipe is adopted for connection, so that when the charging basket conveys materials to the extruder, the resistance of the pipe is greatly reduced, and harder mud can be pushed while smaller air pressure is used; the material is shortened from the storage to the final in-process delivery path who extrudes to can effectively avoid the degeneration problem of material, improve the printing quality, and the return bend is more convenient when wasing.
Description
Technical Field
The utility model relates to a 3D printer technical field, in particular to 3D printer extrusion mechanism suitable for soft materials.
Background
At present, among the 3D printing technique, soft materials print for example clay, food and obtain more and more applications as new technology, and through hose connection between feeder tube and the extrusion body in the more 3D printer extrusion mechanism on the existing market, feeder tube one end is connected with extrusion body feed inlet position, and the feeder tube other end is connected with distal end feedway. The connection mode is inconvenient to operate, and the soft material can only be in a thin mud shape, so that the problem of low printing speed is caused, and the model is easy to collapse in the printing process. The hose is adopted, so that the cleaning of the pipe is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides a 3D printer extrusion mechanism can effectively solve above-mentioned problem.
The utility model discloses a realize like this:
the utility model provides a 3D printer extrusion mechanism, includes storage bucket, storage bucket lid, step motor, shaft coupling, screw rod, extruder shell, shower nozzle, step motor with the screw rod passes through shaft coupling fixed connection, the screw rod set up in the extruder shell, the shower nozzle set up in extruder shell discharge gate department, the nozzle connect in the shower nozzle below, 3D printer extrusion mechanism still includes the elbow, elbow one end with storage bucket threaded connection, the other end with extruder shell threaded connection.
As a further improvement, the elbow angle ranges from 40 ° to 120 °.
As a further improvement, the elbow angle ranges from 85 ° to 100 °.
As a further improvement, the interior of the upper end of the extruder shell (15) is provided with a step-shaped structure, and the step-shaped structure comprises a first boss and a second boss, wherein the second boss is provided with a first through hole; a bearing is fixedly arranged on the first boss, and the inner ring of the bearing is fixedly connected with the screw rod and used for limiting the screw rod; a sealing ring is fixedly arranged on the second boss; the screw rod penetrates through the extruder shell, the bearing and the sealing ring through the first through hole, and the sealing ring is used for preventing soft materials in the extruder shell from overflowing.
As a further improvement, the spray head is internally provided with a through hole, the diameter of the upper end of the spray head is larger than that of the lower end of the spray head, the upper end is internally provided with a conical cavity, and the upper end is provided with a thread structure.
The utility model has the advantages that: the 3D printer extrusion mechanism is characterized in that a charging basket is connected with an extruder shell through a bent pipe, and when the charging basket conveys materials to the extruder, the resistance of the pipe is greatly reduced, so that harder mud can be pushed while smaller air pressure is used; adopt the return bend, the material shortens from the storage to the in-process delivery path of finally extruding to can effectively avoid the degeneration problem of material, improve the printing quality, and it is more convenient when wasing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of an extrusion mechanism of a 3D printer according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an extrusion mechanism of a 3D printer according to an embodiment of the present invention;
fig. 3 is a schematic view of an extruder housing of an extrusion mechanism of a 3D printer according to an embodiment of the present invention;
fig. 4 is a schematic view of a screw of an extrusion mechanism of a 3D printer according to an embodiment of the present invention;
fig. 5 is a schematic view of a nozzle of an extrusion mechanism of a 3D printer according to an embodiment of the present invention;
the corresponding part names for the various reference numbers in the figures are: 10-barrel, 11-barrel cover, 12-elbow, 13-stepping motor, 14-coupler, 15-extruder shell, 151-bearing, 152-circular hole, 153-first boss, 154-second boss, 155-first through hole, 156-sealing ring, 16-spray head, 161-through hole, 162-spray head upper end, 163-spray head lower end, 164-conical cavity, 17-spray nozzle, 18-screw rod, 181-first thread and 182-second thread.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any 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 limited otherwise.
The present invention will be described in further detail with reference to the accompanying drawings.
In this embodiment, refer to fig. 1, a 3D printer extrusion mechanism, includes storage bucket 10, storage bucket lid 11, step motor 13, shaft coupling 14, screw rod 18, extruder housing 15, shower nozzle 16, nozzle 17, step motor 13 with screw rod 18 passes through shaft coupling 14 fixed connection, screw rod 18 set up in extruder housing 15, shower nozzle 16 set up in 1 discharge gate department of extruder housing, nozzle 17 connect in 16 below of shower nozzle, 3D printer extrusion mechanism still includes elbow 12, 12 one end of elbow 12 with storage bucket 10 threaded connection, the other end with 15 threaded connection of extruder housing.
In this embodiment, the lower end of the charging barrel 10 has a circular outlet with a thread on the outer side, the angle range of the elbow 12 is 40 ° to 120 °, and further the angle range of the elbow 12 is 85 ° to 100 °. The joint of one end of the elbow 12 and the charging bucket 10 is provided with a thread structure, and the round outlet and the upper end of the elbow 12 can be rotationally connected through threads. The extruder housing 15 has a circular hole 152 (see fig. 3) on one side, the circular hole 152 has an outer diameter slightly larger than that of the other end of the elbow 12, and the other end of the elbow 12 can be inserted into the circular hole 152 and then screwed. The elbow 12 may be made of ABS or metal. The connection between the charging basket 10 and the extruder housing 15 is realized through the elbow 12, and a hose connection which is commonly used in the prior art is not adopted, so that the resistance of the hose is greatly reduced when the charging basket conveys materials to the extruder under the action of air pressure, and harder mud can be pushed while smaller air pressure is used; and adopt return bend 12, the material is shortened from the storage to the in-process delivery path that finally extrudes to can effectively avoid the material to carry the degeneration problem that brings in the long journey, thereby can improve printing quality, and it is more convenient when wasing.
In this embodiment, referring to fig. 2 and 3, the interior of the extruder housing 15 is hollow, the upper end of the extruder housing 15 has a step-shaped structure, and the step-shaped structure includes a first boss 153 and a second boss 154, the second boss has a first through hole 155, the first boss 153 is fixedly provided with a bearing 151, and an inner ring of the bearing 151 is fixedly connected with the screw 18 for limiting the screw 18; a sealing ring 156 is fixedly arranged on the second boss 154; the screw 18 passes through the extruder housing 15, the bearing 151 and the sealing ring 156 through the first through hole 155, and the sealing ring 156 is used for preventing the soft material in the extruder housing 15 from overflowing.
Referring to fig. 4, the screw 18 is provided with a first thread 181, the cross section of the outer side of the first thread 181 is smaller than that of the inner side to form a certain inclined plane, the included angle between the inclined plane and the horizontal plane is 10 ° to 80 °, and by adopting the inclined plane structure, when the screw 18 rotates, the downward conveying of the material is facilitated. The upper end of the screw rod 18 is further provided with a second thread 182, the second thread 182 is a parallel thread, the upper half part of the second thread 182 is sleeved with the sealing ring 156, and the lower half part of the sealing ring 156 is sleeved with the first through hole 155.
Referring to fig. 2 and 5, the nozzle head 16 has a through hole 161 formed therein, the upper end 162 of the nozzle head 16 has a diameter larger than that of the lower end 163, a tapered cavity 164 is formed in the upper end 162 of the nozzle head, and a screw structure is formed outside the upper end 162 of the nozzle head. The spray head 16 is connected to the lower end of the extruder housing 15, and the connection position corresponds to the inner side of the lower end of the extruder housing 15 and is also provided with a thread structure, and the spray head 16 is rotatably connected to the lower end of the extruder housing 15 through a thread. When the soft material in the extruder housing 15 is extruded, the conical cavity 164 is more favorable for the material to flow downward than the cylindrical structure, and if the cylindrical cavity is adopted, the residual material is always at the bottom of the cylindrical cavity and cannot flow downward.
The utility model discloses the working process is like this: the charging barrel 10 is filled with soft materials, under the action of air pressure, the soft materials flow into the extruder housing 15 through the bent pipe 12, the motor 13 rotates to drive the screw 18 to rotate, and the soft materials are extruded into the spray head 16 along with the first thread 181 on the screw 18 and then extruded through the nozzle 17.
According to the 3D printer extrusion mechanism provided by the embodiment, the charging basket is connected with the extruder shell through the bent pipe, so that when the charging basket conveys materials to the extruder, the resistance of the pipe is greatly reduced, and harder mud can be pushed while smaller air pressure is used; adopt the return bend, the material shortens from the storage to the in-process delivery path of finally extruding to can effectively avoid the degeneration problem of material, improve the printing quality, and it is more convenient when wasing. And the conical cavity structure in the spray head and the inclined plane thread structure of the screw are favorable for the soft material to flow downwards, and further favorable for conveying the material.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a 3D printer extrusion mechanism, its characterized in that, includes storage bucket (10), storage bucket lid (11), step motor (13), shaft coupling (14), screw rod (18), extruder shell (15), shower nozzle (16), nozzle (17), step motor (13) with screw rod (18) pass through shaft coupling (14) fixed connection, screw rod (18) set up in extruder shell (15), shower nozzle (16) set up in extruder shell (15) discharge gate department, nozzle (17) connect in shower nozzle (16) below, 3D printer extrusion mechanism still includes elbow (12), elbow (12) one end with storage bucket (10) threaded connection, the other end with extruder shell (15) threaded connection.
2. The 3D printer extrusion mechanism of claim 1, wherein the elbow (12) angle range is 40 ° to 120 °.
3. 3D printer extrusion mechanism according to claim 2, characterized in that the angle range of the bend (12) is 85 ° to 100 °.
4. The 3D printer extrusion mechanism according to claim 1, wherein the upper end of the extruder housing (15) is internally provided with a step-shaped structure, the step-shaped structure comprises a first boss (153) and a second boss (154), and the second boss (154) is provided with a first through hole (155); a bearing (151) is fixedly arranged on the first boss (153), and the inner ring of the bearing (151) is fixedly connected with the screw rod (18) and used for limiting the screw rod (18); a sealing ring (156) is fixedly arranged on the second boss (154); the screw (18) passes through the extruder shell (15), the bearing (151) and the sealing ring (156) through the first through hole (155), and the sealing ring (156) is used for preventing soft materials in the extruder shell (15) from overflowing.
5. The 3D printer extrusion mechanism according to claim 1, wherein the nozzle head (16) has a through hole (161) therein, the upper end (162) of the nozzle head (16) has a larger diameter than the lower end (163), the upper end (162) has a tapered cavity (164) therein, and the upper end (162) has a threaded configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921404931.2U CN210415534U (en) | 2019-08-27 | 2019-08-27 | 3D printer extrusion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921404931.2U CN210415534U (en) | 2019-08-27 | 2019-08-27 | 3D printer extrusion mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210415534U true CN210415534U (en) | 2020-04-28 |
Family
ID=70364665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921404931.2U Active CN210415534U (en) | 2019-08-27 | 2019-08-27 | 3D printer extrusion mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210415534U (en) |
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2019
- 2019-08-27 CN CN201921404931.2U patent/CN210415534U/en active Active
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