CN207643721U - A kind of 3D printing nozzle - Google Patents

Abstract

The utility model is related to a kind of 3D printing nozzles, including：Jet pipe, the opening at the jet pipe both ends are respectively the after-opening positioned at the open front of front end and positioned at rear end, and the channel includes the material spray section close to jet pipe front end and the accommodating section close to jet pipe rear end；Casing is arranged in the accommodating section, has the channel at perforation both ends；Block, setting in the jet pipe rear end there is the feeding mouth being connected to the channel of described sleeve pipe, the feeding mouth to be not less than the diameter in the channel of described sleeve pipe close to the diameter of the opening of the channel side of described sleeve pipe and less than the outer diameter of described sleeve pipe.The 3D printing nozzle of the utility model, jet pipe is integrated design, casing is arranged in jet pipe, it is oriented to the consumptive material to entrance in the installation block of nozzle end and prevents casing from deviating from, the 3D printing nozzle of the utility model can be effectively prevent because caused by installation or mismachining tolerance the problems such as material leakage, plug.

Description

A kind of 3D printing nozzle

Technical field

The utility model is related to a kind of 3D printing nozzles, belong to 3D printing equipment technical field.

Background technology

3D printing technique appears in the 1980s, also referred to as " rapid shaping technique ".Its biggest advantage is that nothing It need to be machined or mold, any object is generated in the graph data that can directly go out from Computer Design, to greatly contract The R＆D cycle of short sawn timber improves productivity and reduces production cost.Therefore art circles and industrial quarters are widely used in.3D Printing technique can be divided into stereolithography (stcmolithography, SLA), laminated solid mass according to the difference of its forming method Manufacture (Laminated Object Manufacturing, LOM), selective laser sintering (Selective Laser Sintering, SLS), Fused Deposition Modeling (Fused Deposition Modeling, FDM) etc..FDM rapid prototyping systems With other systems are most essential is different from it and does not use laser system, therefore cost is minimum, is also presently the most extensive use A kind of 3D printing technique.FDM techniques are usually that solid low melting point filiform printed material is heated to semi-molten state, such as PLA or ABS etc..Then, it is squeezed out by 3D printer nozzle, according to every layer of scheduled track of institute of object, is successively manufactured, often One layer of workbench of manufacture declines a thickness or printing head rises a thickness, finally constructs entire entity repeatedly.

Currently, the common 3D printer nozzle of society is divided into two parts of trunnion and nozzle, between heated by screw thread It is connected in block, Te Folong pipes is inserted in trunnion.In actual use, due to screw-thread fit problem or tighten it is not in place and Printed material is caused to be leaked from thread pitch, so as to cause abnormal conditions such as material leakage, plugs.

Utility model content

The technical problems to be solved in the utility model is：To overcome the problems, such as in the prior art, to provide one kind and be less likely to occur The 3D printing nozzle of material leakage and plug.

Technical solution adopted by the utility model to solve its technical problems is：

The utility model provides a kind of 3D printing nozzle, including：

Jet pipe has the channel at perforation both ends along its length, and the opening at the jet pipe both ends is respectively positioned at front end Open front and after-opening positioned at rear end, the channel include the material spray section close to jet pipe front end and the receiving close to jet pipe rear end The diameter of section, the jet pipe open front is less than the diameter of the accommodating section not less than the spray no more than the diameter of the material spray section The diameter of pipe after-opening；

Casing is arranged in the accommodating section, has the channel at perforation both ends；

Block, setting in the jet pipe rear end there is the feeding mouth being connected to the channel of described sleeve pipe, the feeding mouth to lean on The diameter of the opening of the channel side of nearly described sleeve pipe is not less than the diameter in the channel of described sleeve pipe and less than described sleeve pipe Outer diameter.

Preferably, the feeding mouth of the 3D printing nozzle of the utility model, the block is taper, close to the logical of described sleeve pipe The diameter of the opening of road side is equal with the diameter in the channel of described sleeve pipe.

Preferably, the 3D printing nozzle of the utility model, the block are coordinated by screw thread and the jet pipe.

Preferably, the 3D printing nozzle of the utility model, described sleeve pipe are managed for Te Folong.

Preferably, the 3D printing nozzle of the utility model, described sleeve pipe are cylindrical straight tube.

Preferably, the front end of the 3D printing nozzle of the utility model, the jet pipe is taper.

Preferably, the 3D printing nozzle of the utility model, the diameter in the channel of a diameter of described sleeve pipe of the material spray section 3-5 times.

The utility model has the beneficial effects that：The 3D printing nozzle of the utility model, jet pipe are integrated design, and casing is set It sets in jet pipe, be oriented to the consumptive material to entrance in the installation block of nozzle end and prevent casing from deviating from, this practicality is new The 3D printing nozzle of type can be effectively prevent because caused by installation or mismachining tolerance the problems such as material leakage, plug.

Description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the structural schematic diagram of the 3D printing nozzle of the utility model；

Fig. 2 is the structural schematic diagram of the block of the utility model.

1- jet pipes, 11- material spray sections, 12- accommodating sections；2- blocks, 21- feeding mouths；3- casings.

Specific implementation mode

The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram, Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.

Embodiment

The present embodiment provides a kind of 3D printing nozzles, as shown in Figure 1, including：

Jet pipe 1, it is respectively to be located at front end to have the channel at perforation both ends, the opening at 1 both ends of the jet pipe along its length Open front and after-opening positioned at rear end, the channel include close to the material spray section 11 of 1 front end of jet pipe and close to 1 rear end of jet pipe Accommodating section 12, the diameter of 1 open front of the jet pipe is less than the straight of the accommodating section 12 no more than the diameter of the material spray section 11 Diameter is not less than the diameter of 1 after-opening of the jet pipe；

Casing 3 is arranged in the accommodating section 12, has the channel at perforation both ends；

Block 2, as shown in Fig. 2, setting has the feeding mouth being connected to the channel of described sleeve pipe 3 in 1 rear end of the jet pipe 21, the feeding mouth 21 is not less than the diameter in the channel of described sleeve pipe 3 close to the diameter of the opening of the channel side of described sleeve pipe 3 And less than the outer diameter of described sleeve pipe 3.

3D printing nozzle in the present embodiment, jet pipe 1 are integrated design, and casing 3 is arranged in jet pipe 1, in nozzle end Installation block 2 is oriented to and is prevented casing 3 from deviating from the consumptive material to entrance, and the 3D printing nozzle of the present embodiment can be effective It prevents because caused by installation or mismachining tolerance the problems such as material leakage, plug.

Further, the feeding mouth 21 of the block 2 is taper, close to the channel side of described sleeve pipe 3 opening it is straight Diameter is equal with the diameter in the channel of described sleeve pipe 3.

The feeding mouth 21 of the block 2 is cone shape funneling, and the 3D printing consumptive material of melting is facilitated to pass through.

Further, the block 2 is coordinated by screw thread and the jet pipe 1.Screw-thread fit can facilitate block 2 from spray It is backed out on pipe 1, to be convenient for changing casing 3

Further, described sleeve pipe 3 is managed for Te Folong.Te Folong pipes have good lubricant effect, prevent the 3D of melting Printing consumables is adhered in channel.

Further, described sleeve pipe 3 is cylindrical straight tube.Cylindrical straight tube facilitates processing and turns to match.

Further, the front end of the jet pipe 1 is taper.

Further, 3-5 times of the diameter in the channel of a diameter of described sleeve pipe 3 of the material spray section 11, such as 3 times, 4 times, 5 Times etc..

It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to which its technology is determined according to right Property range.

Claims (5)

1. a kind of 3D printing nozzle, which is characterized in that including：

Jet pipe（1）, jet pipe（1）It is integrated design, there is the channel at perforation both ends, the jet pipe along its length（1）Both ends Opening is respectively the after-opening positioned at the open front of front end and positioned at rear end, and the channel includes close to jet pipe（1）The spray of front end Expect section（11）With close jet pipe（1）The accommodating section of rear end（12）, the jet pipe（1）The diameter of open front is not more than the material spray section （11）Diameter be less than the accommodating section（12）Diameter be not less than the jet pipe（1）The diameter of after-opening；

Casing（3）, it is arranged in the accommodating section（12）It is interior, there is the channel at perforation both ends；

Block（2）, it is arranged in the jet pipe（1）Rear end, has and described sleeve pipe（3）Channel connection feeding mouth（21）, institute State feeding mouth（21）Close to described sleeve pipe（3）Channel side opening diameter be not less than described sleeve pipe（3）Channel it is straight Diameter and be less than described sleeve pipe（3）Outer diameter；

The material spray section（11）A diameter of described sleeve pipe（3）3-5 times of diameter of channel；

The block（2）Feeding mouth（21）For taper, close described sleeve pipe（3）Channel side opening diameter with it is described Casing（3）Channel diameter it is equal.

2. 3D printing nozzle according to claim 1, which is characterized in that the block（2）Pass through screw thread and the jet pipe （1）Cooperation.

3. 3D printing nozzle according to claim 1, which is characterized in that described sleeve pipe（3）It is managed for Te Folong.

4. 3D printing nozzle according to claim 3, which is characterized in that described sleeve pipe（3）For cylindrical straight tube.

5. according to claim 1-4 any one of them 3D printing nozzles, which is characterized in that the jet pipe（1）Front end be cone Shape.