CN210336899U - 3D of controllable flow prints graphite alkene combined material shower nozzle - Google Patents
3D of controllable flow prints graphite alkene combined material shower nozzle Download PDFInfo
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- CN210336899U CN210336899U CN201921028566.XU CN201921028566U CN210336899U CN 210336899 U CN210336899 U CN 210336899U CN 201921028566 U CN201921028566 U CN 201921028566U CN 210336899 U CN210336899 U CN 210336899U
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Abstract
The utility model relates to a flow-controllable 3D printing graphene composite material spray head, which comprises an inner core and a lifting cover, wherein the lifting cover is sleeved on the inner core and moves along the axial direction of the inner core; the upper end of the inner core is cylindrical, the lower end of the inner core is in a circular truncated cone shape, a plurality of material conveying through holes are uniformly formed in the inner core, one ends of the material conveying through holes are located on the upper end face of the inner core, and the other ends of the material conveying through holes are located on the circular truncated cone-shaped side wall of the inner core; a cylindrical cavity is arranged at the upper end of the lifting cover, a round table-shaped cavity is arranged at the lower end of the lifting cover, and a discharge hole is formed in the bottom end of the lifting cover; a certain gap is reserved between the inner wall of the lower end of the lifting cover and the outer wall of the lower end of the inner core, when the melting consumable flows out from the material conveying through hole, the melting consumable falls into the inclined inner wall of the round table-shaped cavity at the lower end of the lifting cover, the melting consumable flows out from the material outlet through gravity, when the lifting cover moves axially along the inner core, the gap between the inner wall of the lower end of the lifting cover and the outer wall of the lower end of the inner core changes, the flow of the melting consumable flowing out from the material conveying through hole is controlled, and the flow.
Description
Technical Field
The utility model relates to a 3D prints the field, specifically is a controllable flow's 3D prints graphite alkene combined material shower nozzle.
Background
Due to the special two-dimensional honeycomb lattice monoatomic layer structure of the graphene, the graphene has unique physical properties such as light weight, large specific surface area, good electric and thermal conductivity, high mechanical strength and the like, and therefore, the graphene can be used as an ideal structure and functional filler to prepare a composite material.
3D printing is a molding manufacturing process that has developed rapidly in recent years, also known as "additive manufacturing. Compared with the traditional material reducing manufacturing process, the process of manufacturing the die is reduced. The technology of the mould-free forming gets rid of the constraints of space geometry and design process, and can convert the design of a complex structure into a solid product.
The 3D printing technology is combined with the preparation of the graphene/polymer matrix composite material, so that the composite material can be rapidly manufactured and molded to manufacture products with complex structures. Due to the addition of the graphene, the 3D printed product has better mechanical property and functional characteristics, and meanwhile, a gradient functional product can be prepared more conveniently. Meanwhile, the mode of manufacturing layer by layer through 3D printing inhibits large-area agglomeration of graphene in a polymer matrix, and is more beneficial to realizing uniform dispersion.
Fused deposition modeling is mainly suitable for 3D printing of thermoplastic polymers, and is one of the most common 3D printing modes at present. The graphene/polymer matrix composite material prepared by melt mixing, solution mixing and other modes is made into a 3D printing wire rod through equipment such as an extruder, and then the graphene/polymer matrix composite material can be subjected to melt deposition molding.
However, the nozzle of the existing fused deposition modeling printer has a fixed-size aperture, the aperture size of the nozzle cannot be adjusted, when the nozzle with different apertures needs to be adopted, the nozzle needs to be replaced, even the 3D printer needs to be replaced, and the working efficiency is low. How to control the flow of the melting consumables from the discharge hole becomes a problem which needs to be solved by researchers urgently.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how the outflow speed of the molten consumables from the discharge hole can be controlled;
in order to achieve the above object, the utility model provides a following technical scheme:
the utility model relates to a 3D printing graphene composite material spray head with controllable flow, which comprises a feeding unit, a heating unit and a nozzle connected with the lower end surface of the heating unit;
the nozzle comprises an inner core and a lifting cover which is sleeved on the inner core and moves along the axial direction of the inner core;
the upper end of the inner core is cylindrical, the lower end of the inner core is in a circular truncated cone shape, a plurality of material conveying through holes which are convenient for the melting consumables to pass through are uniformly formed in the inner core, one end of each material conveying through hole is positioned on the upper end surface of the inner core, and the other end of each material conveying through hole is positioned on the circular truncated cone-shaped side wall of the inner core; the material conveying through holes are arranged, so that molten consumables can flow to the discharge hole in time, and blockage is prevented; one end of the material conveying through hole is positioned on the upper end surface of the inner core so as to facilitate the penetration of the melting consumable material; the other end of the material conveying through hole is positioned at the circular truncated cone-shaped side wall of the inner core, namely, the other end of the material conveying through hole is elliptical and positioned at the circular truncated cone-shaped inclined side wall.
A cylindrical cavity is arranged at the upper end of the lifting cover, a round table-shaped cavity is arranged at the lower end of the lifting cover, and a discharge hole is formed in the bottom end of the lifting cover;
the inner diameter of the cylindrical cavity of the lifting cover is consistent with the cylindrical outer diameter of the upper end of the inner core, so that the lifting cover is ensured to be attached to the outer wall of the inner core; similarly, the profile of the circular truncated cone-shaped cavity of the lifting cover is consistent with that of the circular truncated cone-shaped cavity of the inner core, a certain gap is reserved between the inner wall of the lower end of the lifting cover and the outer wall of the lower end of the inner core, when the melting consumables flow out from the material conveying through holes, the melting consumables fall into the inclined inner wall of the circular truncated cone-shaped cavity of the lower end of the lifting cover, and the melting consumables flow out from the discharge hole.
When the lifting cover moves upwards along the axial direction of the inner core, the inner wall of the upper end of the lifting cover is attached to the outer wall of the upper end of the inner core and moves upwards, and the gap distance between the lower end of the inner wall of the lifting cover and the lower end of the outer wall of the inner core is reduced;
when the lifting cover moves along the axial direction of the inner core, the gap between the inner wall of the lower end of the lifting cover and the outer wall of the lower end of the inner core is changed, the flow of the melting consumable materials flowing out of the material conveying through hole is controlled, and finally the flow of the melting consumable materials flowing out of the material outlet is controlled; when the lifting cover moves upwards along the axial direction of the inner core, the flow of the melting consumables flowing out of the discharge hole is reduced; on the contrary, when the lifting cover moves downwards along the axial direction of the inner core, the flow rate of the melting consumables flowing out of the discharge port is increased.
How to fix the inner core and the heating unit, the utility model adopts the technical proposal that the outer wall at the upper end of the inner core is provided with a first thread which connects the inner core and the heating unit;
the inner core is screwed into the inner thread of the lower end face of the heating unit through the first thread, so that fixation is realized.
In order to prevent the inner core and the heating unit from being connected and clamped by screw threads, the utility model adopts the technical proposal that a limiting ring is arranged below the first screw thread and is fixedly arranged on the outer wall of the inner core;
through setting up the spacing ring, offset the up end of spacing ring and heating element's lower terminal surface, prevent that the inner core from urgently needing the precession to it is dead with heating element threaded connection card.
How to realize the lifting movement of the lifting cover, the utility model adopts the structure that the second thread is arranged below the limiting ring and is matched with the internal thread of the lifting cover; when the lifting cover is rotated, the lifting cover moves along the axis direction of the inner core; by rotating the lifting cover, lifting movement relative to the inner core occurs.
How to prevent the melting consumables from entering the gap between the lifting cover and the threaded connection of the inner core, the sealing ring is arranged below the second thread, and the sealing ring is fixedly arranged on the outer wall of the inner core; when the lifting cover is rotated, the sealing ring prevents the molten consumables flowing out of the material conveying through hole from flowing into the gap at the second thread.
The utility model has the advantages that: the utility model relates to a 3D of controllable flow prints graphite alkene combined material shower nozzle, lift cover lower extreme inner wall leaves certain clearance with inner core lower extreme outer wall, when the melting consumptive material flows from defeated material through-hole, fall into lift cover lower extreme round platform form cavity slope inner wall department, flow melting consumptive material from the discharge gate through gravity, when lift cover along inner core axial motion, the clearance between lift cover lower extreme inner wall and the inner core lower extreme outer wall changes, the flow of outflow melting consumptive material in the defeated material through-hole of control, final control flows the flow of melting consumptive material from the discharge gate.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the matching structure of the inner core and the lifting cover of the present invention;
FIG. 3 is a schematic view of the structure of the inner core of the present invention;
FIG. 4 is a schematic view of the elevating cover of the present invention;
FIG. 5 is a sectional view showing the inner core and the elevating cover of the present invention;
in the figure: 1-feeding unit, 2-heating unit, 3-nozzle, 4-inner core, 5-lifting cover, 6-material conveying through hole, 7-first screw thread, 8-spacing ring, 9-second screw thread, 10-sealing ring, 11-discharge hole.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the utility model relates to a 3D printing graphene composite material nozzle with controllable flow rate, which comprises a feeding unit 1, a heating unit 2 and a nozzle 3 connected with the lower end surface of the heating unit 2;
as shown in fig. 2, the nozzle 3 includes an inner core 4 and a lifting cover 5 which is sleeved on the inner core 4 and moves along the axial direction of the inner core 4;
as shown in fig. 3, the upper end of the inner core 4 is cylindrical, the lower end of the inner core is circular truncated cone-shaped, a plurality of material conveying through holes 6 for the melting consumables to pass through are uniformly formed in the inner core 4, one end of each material conveying through hole 6 is located on the upper end surface of the inner core 4, and the other end of each material conveying through hole 6 is located on the circular truncated cone-shaped side wall of the inner core 4; the material conveying through holes are arranged, so that molten consumables can flow to the discharge hole in time, and blockage is prevented; one end of the material conveying through hole is positioned on the upper end surface of the inner core so as to facilitate the penetration of the melting consumable material; the other end of the material conveying through hole is positioned at the circular truncated cone-shaped side wall of the inner core, namely, the other end of the material conveying through hole is elliptical and positioned at the circular truncated cone-shaped inclined side wall.
As shown in fig. 4, a cylindrical cavity is arranged at the upper end of the lifting cover 5, a truncated cone-shaped cavity is arranged at the lower end of the lifting cover 5, and a discharge hole 11 is arranged at the bottom end of the lifting cover 5;
the inner diameter of the cylindrical cavity of the lifting cover is consistent with the cylindrical outer diameter of the upper end of the inner core, so that the lifting cover is ensured to be attached to the outer wall of the inner core; similarly, the profile of the circular truncated cone-shaped cavity of the lifting cover is consistent with that of the circular truncated cone-shaped cavity of the inner core, a certain gap is reserved between the inner wall of the lower end of the lifting cover and the outer wall of the lower end of the inner core, when the melting consumables flow out from the material conveying through holes, the melting consumables fall into the inclined inner wall of the circular truncated cone-shaped cavity of the lower end of the lifting cover, and the melting consumables flow out from the discharge hole.
As shown in fig. 5, when the lifting cover 5 moves upward along the axial direction of the inner core 4, the inner wall of the upper end of the lifting cover 5 is attached to the outer wall of the upper end of the inner core 4 and moves upward, and the gap distance between the lower end of the inner wall of the lifting cover 5 and the lower end of the outer wall of the inner core 4 is reduced;
when the lifting cover moves along the axial direction of the inner core, the gap between the inner wall of the lower end of the lifting cover and the outer wall of the lower end of the inner core is changed, the flow of the melting consumable materials flowing out of the material conveying through hole is controlled, and finally the flow of the melting consumable materials flowing out of the material outlet is controlled; when the lifting cover moves upwards along the axial direction of the inner core, the flow of the melting consumables flowing out of the discharge hole is reduced; on the contrary, when the lifting cover moves downwards along the axial direction of the inner core, the flow rate of the melting consumables flowing out of the discharge port is increased.
As shown in fig. 3, how to fix the inner core and the heating unit, the utility model adopts the technical scheme that the outer wall of the upper end of the inner core 4 is provided with a first thread 7, and the first thread 7 connects the inner core 4 and the heating unit 2;
the inner core is screwed into the inner thread of the lower end face of the heating unit through the first thread, so that fixation is realized.
As shown in fig. 3, in order to prevent the inner core from being locked by the threaded connection with the heating unit, the utility model adopts the technical scheme that a limit ring 8 is arranged below the first thread 7, and the limit ring 8 is fixedly arranged on the outer wall of the inner core 4;
through setting up the spacing ring, offset the up end of spacing ring and heating element's lower terminal surface, prevent that the inner core from urgently needing the precession to it is dead with heating element threaded connection card.
As shown in fig. 3, how to realize the lifting movement of the lifting cover, the utility model adopts the structure that the second thread 9 is arranged below the limit ring 8, and the second thread 9 is matched with the internal thread of the lifting cover 5; when the lifting cover 5 is rotated, the lifting cover 5 moves along the axial direction of the inner core 4; by rotating the lifting cover 5, a lifting movement takes place relative to the core 4.
As shown in fig. 3, how to prevent the melting consumables from entering the gap between the lifting cover and the threaded connection of the inner core, the sealing ring 10 is arranged below the second thread 9, and the sealing ring 10 is fixedly arranged on the outer wall of the inner core 4; when the elevating hood 5 is rotated, the sealing ring 10 prevents the molten consumables flowing out of the feed through hole 6 from flowing into the gap at the second screw 9.
The utility model relates to a 3D of controllable flow prints graphite alkene combined material shower nozzle, lift cover lower extreme inner wall leaves certain clearance with inner core lower extreme outer wall, when the melting consumptive material flows from defeated material through-hole, fall into lift cover lower extreme round platform form cavity slope inner wall department, flow melting consumptive material from the discharge gate through gravity, when lift cover along inner core axial motion, the clearance between lift cover lower extreme inner wall and the inner core lower extreme outer wall changes, the flow of outflow melting consumptive material in the defeated material through-hole of control, final control flows the flow of melting consumptive material from the discharge gate.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides a controllable flow's 3D prints graphite alkene combined material shower nozzle which characterized in that includes: comprises a feeding unit, a heating unit and a nozzle connected with the lower end surface of the heating unit;
the nozzle comprises an inner core and a lifting cover which is sleeved on the inner core and moves along the axial direction of the inner core;
the upper end of the inner core is cylindrical, the lower end of the inner core is in a circular truncated cone shape, a plurality of material conveying through holes which are convenient for molten consumables to pass through are uniformly formed in the inner core, one end of each material conveying through hole is located on the upper end face of the inner core, and the other end of each material conveying through hole is located on the circular truncated cone-shaped side wall of the inner core;
a cylindrical cavity is arranged at the upper end of the lifting cover, a round table-shaped cavity is arranged at the lower end of the lifting cover, and a discharge hole is formed in the bottom end of the lifting cover;
when the lifting cover moves upwards along the axial direction of the inner core, the inner wall of the upper end of the lifting cover is attached to the outer wall of the upper end of the inner core to move upwards, and the gap distance between the lower end of the inner wall of the lifting cover and the lower end of the outer wall of the inner core is reduced.
2. The 3D printing graphene composite material spray head with the controllable flow rate according to claim 1, is characterized in that: the outer wall of the upper end of the inner core is provided with first threads, and the inner core is connected with the heating unit through the first threads.
3. The 3D printing graphene composite material spray head with the controllable flow rate according to claim 2, characterized in that: and a limiting ring is arranged below the first thread and fixedly arranged on the outer wall of the inner core.
4. The 3D printing graphene composite material spray head with the controllable flow rate according to claim 3, characterized in that: a second thread is arranged below the limiting ring and matched with the internal thread of the lifting cover;
when the lifting cover is rotated, the lifting cover moves along the axis direction of the inner core.
5. The 3D printing graphene composite material spray head with the controllable flow rate according to claim 4, is characterized in that: a sealing ring is arranged below the second thread and fixedly arranged on the outer wall of the inner core;
when the lifting cover is rotated, the sealing ring prevents the melting consumables flowing out of the material conveying through hole from flowing into the gap at the second thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921028566.XU CN210336899U (en) | 2019-07-03 | 2019-07-03 | 3D of controllable flow prints graphite alkene combined material shower nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921028566.XU CN210336899U (en) | 2019-07-03 | 2019-07-03 | 3D of controllable flow prints graphite alkene combined material shower nozzle |
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| CN210336899U true CN210336899U (en) | 2020-04-17 |
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| CN201921028566.XU Active CN210336899U (en) | 2019-07-03 | 2019-07-03 | 3D of controllable flow prints graphite alkene combined material shower nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181810A (en) * | 2019-07-03 | 2019-08-30 | 常州轻工职业技术学院 | A kind of 3D printing graphene composite material spray head of flow-controllable |
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- 2019-07-03 CN CN201921028566.XU patent/CN210336899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181810A (en) * | 2019-07-03 | 2019-08-30 | 常州轻工职业技术学院 | A kind of 3D printing graphene composite material spray head of flow-controllable |
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