3D printer nozzle

Abstract

The utility model provides a 3D printer nozzle which comprises a back plate, a nozzle assembly, a heat dissipation block and a proximity switch, and the back plate is used for being connected with a coordinate axis assembly in a sliding mode; the spray head assembly is fixedly connected to the back plate and used for spraying consumables. The heat dissipation block is fixedly arranged on the back plate and used for preventing the consumable from being heated and deformed in the spray head assembly; the proximity switch is fixedly arranged on the side, away from the nozzle assembly, of the backboard. The nozzle assembly comprises a throat pipe and a heating block which are integrally arranged, the throat pipe is used for guiding consumables, and the heating block is used for melting the consumables in the heating block; the proximity switch is arranged close to the spray head assembly and used for sensing the accumulation degree of the consumables at the spray head assembly, and in this way, when the consumables accumulated near the spray head assembly are enough and reach the preset numerical value of the proximity switch, the proximity switch can sense and send out a stop command, so that the machine stops printing, and the spray head assembly is protected against damage.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printer technical field, concretely relates to a 3D printer nozzle. BACKGROUND

[0002] Now, 3D printing technology has been widely used in multiple fields, such as jewelry design, footwear design and manufacturing, industrial design and architectural design. Hot end wrapping head is one of the more disastrous printing problems in 3D printing, when the model falls off in the first few layers of printing, the fallen model has the probability of adhering to the nozzle, with the continuous extrusion of the nozzle, eventually leading to a more serious wrapping head condition. Or when the nozzle is feeding all the time, but not sticking to the platform plate, it will lead to the wrapping of the printing material around the nozzle, resulting in a wrapping head condition, when enough is accumulated, it will damage the nozzle assembly. SUMMARY

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model aims at providing a 3D printer nozzle, which can prevent the wrapping of consumables and damage the nozzle assembly.

[0004] The utility model discloses a technical scheme adopted to solve its technical problems:

[0005] The utility model provides a 3D printer nozzle, which comprises:

[0006] A back plate is used for slidingly connecting a coordinate axis assembly;

[0007] A nozzle assembly is fixedly connected to the back plate and is used for spitting out consumables;

[0008] A heat dissipation block is fixedly arranged on the back plate and is used for preventing the consumables from being deformed by heat in the nozzle assembly;

[0009] A proximity switch is fixedly arranged on the side of the back plate away from the nozzle assembly;

[0010] The nozzle assembly comprises an integrated throat pipe and a heating block, the throat pipe is used for guiding the consumables, and the heating block is used for melting the consumables therein;

[0011] The proximity switch is arranged close to the nozzle assembly and is used for sensing the accumulation degree of the consumables at the nozzle assembly.

[0012] As a preferred embodiment, the nozzle assembly further comprises a ceramic heating sheet and a snap ring, the ceramic heating sheet is used for heating the consumables to be extruded, and the ceramic heating sheet abuts on the heating block;

[0013] The snap ring is sleeved on the ceramic heating sheet and the heating block and is used for fixing the relative position of the ceramic heating sheet and the heating block.

[0014] As a preferred embodiment, the heat dissipation block is configured as a tower-shaped heat dissipation block.

[0015] As a preferred embodiment, a fan assembly is further included, the fan assembly comprising a base and a fan blade, the base being detachably connected with the heat dissipation block, the fan blade being rotationally connected with the base, and the axis of the fan blade corresponding to the axis of the heat dissipation block.

[0016] As a preferred embodiment, the nozzle assembly further comprises a silica gel sleeve, the silica gel sleeve being sleeved on the ceramic heating sheet and the heating block.

[0017] As a preferred embodiment, a fixing shaft is further included, one end of the fixing shaft being threadedly connected with the heat dissipation block, and the other end of the fixing shaft abutting against the base, and a bolt being threadedly connected with the fixing shaft through the base.

[0018] As a preferred embodiment, the fan blade is configured as an axial fan.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The utility model provides a 3D printer nozzle, including backplate, nozzle assembly, heat dissipation block and proximity switch, wherein, backplate is used for sliding connection coordinate axis component, nozzle assembly fixed connection is in backplate for spitting and vomiting consumable, heat dissipation block fixedly arranged in backplate is used for preventing consumable and is deformed in the heat of nozzle assembly, proximity switch fixedly arranged in the side of backplate away from nozzle assembly, nozzle assembly includes the integrated setting of throat pipe and heating block, and throat pipe is used for importing consumable, and heating block is used for melting consumable in it, and proximity switch is close to nozzle assembly setting is used for inductive consumable and is accumulated degree at nozzle assembly, and such setting, when the consumable of nozzle assembly vicinity is accumulated enough, reaches the value of proximity switch and is set in advance, and proximity switch can inductive and send stop command to, thereby makes the machine and suspends printing, protects the nozzle assembly from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings described in the following are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0022] Figure 1 It is a perspective view of the 3D printer nozzle of the embodiment of the present application.

[0023] Figure 2Part of the embodiment of the utility model 3D printer nozzle's partial three-dimensional exploded structure diagram;

[0024] Figure 3 Another three-dimensional exploded structure diagram of the embodiment of the utility model 3D printer nozzle.

[0025] Among them:

[0026] 1-back plate;2-ceramic heating sheet;3-radiating block;4-throat pipe;5-first snap ring;6-second snap ring;7-axial flow fan;71-base;72-fan blade;8-fixed shaft;9-silica gel cover;10-proximity switch;11-heating block. Specific implementation

[0027] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model is described in detail below in conjunction with the drawings and specific embodiments.It should be explained that the embodiments and the features in the embodiments of the application can be combined with each other without conflict.In the following description, a lot of specific details are described so as to fully understand the utility model, and the described embodiment is only a part of the embodiment of the utility model, not all the embodiments.Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments and are not intended to limit the utility model.

[0029] Please see Figure 1 And Figure 2 The utility model embodiment provides a kind of 3D printer nozzle, including back plate 1, nozzle assembly, radiating block 3 and proximity switch 10, wherein, back plate 1 is used to slide connection coordinate axis assembly, and coordinate axis assembly can reciprocate at least in one direction;Nozzle assembly is fixedly connected to back plate 1, is used to spray and spit consumables;Radiating block 3 is fixedly arranged on back plate 1, is used to prevent consumables from being deformed by heating in nozzle assembly;Proximity switch 10 is fixedly arranged on the side of back plate 1 away from nozzle assembly;Proximity switch 10 is arranged at the end of nozzle assembly, is used to induct the accumulation degree of consumables at the end of nozzle assembly, so setting, when the consumables enough enough in the vicinity of nozzle assembly, reach the value of proximity switch 10 preestablished, proximity switch 10 can induct and send stop command, to make machine pause printing, protect nozzle assembly from being damaged.

[0030] Specifically, please see Figure 3The nozzle assembly comprises a throat pipe 4 and a heating block 11, a ceramic heating sheet 2 and a clamping ring, the throat pipe 4 is used for guiding the consumables, the heating block 11 is used for melting the consumables in the heating block 11, the ceramic heating sheet 2 is also used for heating the consumables to be extruded, the ceramic heating sheet 2 is arranged in abutment with the heating block 11, the clamping ring is sleeved on the ceramic heating sheet 2 and the heating block 11, and is used for fixing the relative positions of the ceramic heating sheet 2 and the heating block 11, preferably, in order to prevent the positions of the ceramic heating sheet 2 and the heating block 11 from being deviated, according to the actual length of the heating block 11, a corresponding number of clamping rings can be selected, in the embodiment, two clamping rings are selected, and the two clamping rings are defined as a first clamping ring 5 and a second clamping ring 6, the first clamping ring 5 and the second clamping ring 6 are sleeved on two ends of the heating block 11 respectively, and the nozzle assembly further comprises a silica gel sleeve 9, the silica gel sleeve 9 is sleeved on the ceramic heating sheet 2 and the heating block 11.

[0031] Further, the heat dissipation block 3 is configured as a tower-shaped heat dissipation block 3, the tower-shaped heat dissipation block 3 can well cooperate with the air duct, accelerate air circulation, improve heat exchange rate and prevent the consumables from being deformed due to heating in the nozzle assembly, preferably, the printer nozzle of the embodiment further comprises a fan assembly, the fan assembly comprises a base 71 and a fan blade 72, the base 71 is detachably connected with the heat dissipation block 3, the fan blade 72 is rotationally connected with the base 71, and the axis of the fan blade 72 corresponds to the axis of the heat dissipation block 3.

[0032] As an optional embodiment, the fan blade 72 of the embodiment is configured as an axial flow fan 7.

[0033] It can be understood that, in the embodiment, the throat pipe 4 communicates with the heating block 11, and the heating block 11 has the same effect as the ceramic heating sheet 2, that is, the heating block 11 is used for melting the consumables to be extruded in the heating block 11.

[0034] In summary, the 3D printer nozzle of the embodiment has at least the following technical effects:

[0035] The utility model discloses a 3D printer nozzle, including backplate 1, nozzle assembly, heat dissipation block 3 and proximity switch 10, wherein backplate 1 is used for sliding connection coordinate axis subassembly, nozzle assembly fixed connection is in backplate 1, is used for spitting and vomiting consumables, heat dissipation block 3 fixedly arranged in backplate 1 is used for preventing the heat deformation of consumables in nozzle assembly, proximity switch 10 fixedly arranged in the side of backplate 1 away from nozzle assembly, nozzle assembly includes the integrated setting of throat pipe 4 and heating block 11, and throat pipe 4 is used for importing consumables, and heating block 11 is used for melting the consumables in it, and proximity switch 10 is close to nozzle assembly setting, is used for inducting the accumulation degree of consumables at nozzle assembly, and thus sets up, when the consumables enough enough of accumulation in the vicinity of nozzle assembly, reaches the value of proximity switch 10 prearranged, proximity switch 10 can induct and send stop command, to make the machine pause printing, protect the nozzle subassembly from being damaged.

[0036] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, so any modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment, which does not deviate from the technical scheme content of the utility model, still belongs to the range of the technical scheme of the utility model.

Claims

1. A 3D printer nozzle, characterized in that, The utility model relates to a kind of extrusion head assembly, including: Backplate (1), the backplate (1) is used to slidingly connect coordinate axis assembly; Nozzle assembly, the nozzle assembly is fixedly connected to the backplate (1), for spouting consumables; Heat dissipation block (3), the heat dissipation block (3) is fixedly arranged in the backplate (1), for preventing consumables from being heated and deformed in the nozzle assembly; Proximity switch (10), the proximity switch (10) is fixedly arranged in the backplate (1) away from the side of the nozzle assembly; The nozzle assembly includes integrally arranged throat pipe (4) and heating block (11), the throat pipe (4) is used to import consumables, and the heating block (11) is used to melt consumables in it; The proximity switch (10) is arranged close to the nozzle assembly, for sensing the accumulation degree of consumables at the nozzle assembly.

2. The 3D printer nozzle of claim 1, wherein, The nozzle assembly further includes ceramic heating sheet (2) and snap ring, the ceramic heating sheet (2) is used to heat to be extruded consumables, and the ceramic heating sheet (2) is abutted on the heating block (11); The snap ring is sleeved on the ceramic heating sheet (2) and the heating block (11), for fixing the relative position of the ceramic heating sheet (2) and the heating block (11).

3. The 3D printer nozzle of claim 1, wherein, The heat dissipation block (3) is configured as tower-shaped heat dissipation block (3).

4. The 3D printer head of claim 1 or 3, wherein, Further including fan assembly, the fan assembly includes base (71) and fan blade (72), the base (71) is detachably connected with the heat dissipation block (3), the fan blade (72) is rotatably connected to the base (71), and the axis of the fan blade (72) corresponds the axis of the heat dissipation block (3) is arranged.

5. The 3D printer head of claim 2, wherein, The nozzle assembly further includes silica gel sleeve (9), and the silica gel sleeve (9) is sleeved on the ceramic heating sheet (2) and the heating block (11).

6. The 3D printer head of claim 4, wherein, Further including fixed shaft (8), one end of the fixed shaft (8) is screw-connected with the heat dissipation block (3), and the other end of the fixed shaft (8) is abutted to the base (71), and bolt is screw-connected with the fixed shaft (8) through the base (71).

7. The 3D printer head of claim 4, wherein, The fan blade (72) is configured as axial fan (7).

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