CN205631388U

CN205631388U - Thread feeding mechanism of 3D printer

Info

Publication number: CN205631388U
Application number: CN201620148010.4U
Authority: CN
Inventors: 李赟坤; 关雷; 史子木
Original assignee: Zhejiang Industry and Trade Vocational College
Current assignee: Zhejiang Industry and Trade Vocational College
Priority date: 2016-02-26
Filing date: 2016-02-26
Publication date: 2016-10-12
Anticipated expiration: 2026-02-26

Abstract

The utility model relates to a 3D printing apparatus, in particular to thread feeding mechanism of 3D printer. The utility model provides a following technical scheme: a thread feeding mechanism of 3D printer, including the mount pad, erect the conveying subassembly on the mount pad, the conveying subassembly is vertical pinch roller that sets up side by side including the friction transfer gear and with the friction transfer gear, the clearance has between pinch roller and the friction transfer gear, this clearance is crowded material passageway, the mount pad is put on the shelf and is equipped with the rotatory driving motor of drive friction transfer gear, the mount pad is equipped with two sets of horizontal parallel configuration's conveying subassembly at least, be equipped with the linkage piece with the driving motor linkage on the friction transfer gear in each group's conveying subassembly respectively. Adopt above -mentioned technical scheme, provide big, the stable thread feeding mechanism of 3D printer of pine silk of contact surface in data send process.

Description

The wire feeder of 3D printer

Technical field

This utility model relates to a kind of 3D printing device, particularly to the wire feeder of a kind of 3D printer.

Background technology

3D printer is a kind of private print equipment that can print out threedimensional model or product.All obtain relatively in every field For using widely.

3D printer, when implementing to print, needs to be delivered in printhead material (i.e. plastic wire) by wire feeder, Printhead outputs it after in fact applying heat.

Traditional wire feeder mainly by mounting seat, be set up in mounting seat friction and transmit wheel and transmit wheel in vertical with friction Transmitting to the pinch roller being set up in parallel, pinch roller and friction and have gap between wheel, this gap is material extrusion passage.This type of wire feeder is only Having one group of pinch roller and friction transmits wheel, contact surface during wire feed is less, and loose wire is not sufficiently stable.

Summary of the invention

The deficiency existed for prior art, this utility model provides that a kind of contact surface is big during transmitting, loose wire The wire feeder of stable 3D printer.

For achieving the above object, this utility model provides following technical scheme: the wire feeder of a kind of 3D printer, bag Include mounting seat, the transfer assembly being set up in mounting seat, transfer assembly include friction transmit wheel and with friction transmit wheel in The pinch roller being longitudinally set up in parallel, pinch roller and friction transmit has gap between wheel, and this gap is material extrusion passage, and mounting seat sets up Have and drive friction to transmit the driving motor that wheel rotates, it is characterised in that: described mounting seat is provided with at least two groups and arranges the most side by side The transfer assembly of cloth, the friction in each group transfer assembly transmits the STATEMENT OF FEDERALLY SPONSORED being respectively equipped with and driving motor linkage on wheel.

Use technique scheme, by arranging the transfer assembly of at least two horizontal laid out in parallel of group in mounting seat, make During wire feed, the compressive plane (i.e. contact surface) to plastic wire is increased, owing to contact area is bigger, in identical frictional force In the case of, less to the pressure of material silk, substantially without causing material to be deformed, impact print so that loose wire process more It is stable.

This utility model is further arranged to: STATEMENT OF FEDERALLY SPONSORED include and drive motor linkage output helical gear and with output The travelling gear of helical gear engagement, friction is transmitted wheel and is linked with travelling gear by connecting shaft.

Use technique scheme, drive the output part of motor to implement to engage with travelling gear by output helical gear, Meshing performance is good.Contact line at output helical gear teeth is the straight line tilted with Gear axis, and the gear teeth start engagement and depart from Engagement is all gradually, thus stable drive, noise are little, and the most this engagement system also reduces the foozle shadow to transmission Ring.And it is big with the registration of transmission gear to export helical gear.Can reduce the load of every pair of gear teeth, thus relative raising The bearing capacity of gear, extends the service life of gear, and makes stable drive.

This utility model is further set to: it is installation portion that friction transmits the axial two ends of wheel, local arcuation in the middle part of it Annular recess, the inwall of this annular recess is evenly equipped with friction convex tendon.

Use technique scheme, it is preferable that degree of friction is so set, plastic wire can be implemented stable conveying.

Below in conjunction with the accompanying drawings this utility model is further described.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view 1 of this utility model embodiment；

Fig. 2 is the schematic perspective view 2 of this utility model embodiment；

Fig. 3 is the schematic perspective view that in this utility model embodiment, friction transmits wheel.

Detailed description of the invention

The wire feeder of a kind of 3D printer as shown in Fig. 1 Fig. 3, includes mounting seat 1, is set up in mounting seat 1 Transfer assembly 2, transfer assembly 2 includes friction and transmits wheel 21 and transmit wheel 21 in the pinch roller being longitudinally set up in parallel with friction 22, pinch roller 22 and friction transmit has gap between wheel 21, and this gap is material extrusion passage 23, and mounting seat 1 is added to be provided with driving and rub Wiping the driving motor 3 transmitting wheel 21 rotation, mounting seat 1 is provided with the transfer assembly 2 of at least two horizontal laid out in parallel of group, respectively organizes transmission Friction in assembly 2 transmits the STATEMENT OF FEDERALLY SPONSORED 4 being respectively equipped with and driving motor 3 to link on wheel 21.In such scheme, by installing The transfer assembly 2 of at least two group horizontal laid out in parallel is set on seat 1, makes during wire feed the compressive plane to plastic wire (i.e. contact Face) increased, owing to contact area is bigger, in the case of identical frictional force, less to the pressure of material silk, substantially without Causing material to be deformed, impact prints so that loose wire process is more stable.

In this utility model embodiment, STATEMENT OF FEDERALLY SPONSORED 4 includes and the output helical gear 41 driving motor 3 to link and with defeated Going out the travelling gear 42 of helical gear 41 engagement, friction is transmitted wheel 21 and is linked with travelling gear 42 by connecting shaft 24.Drive motor 3 Output part engaged by output helical gear 41 and travelling gear 42 enforcement, meshing performance is good.At output helical gear 42 gear teeth Contact line be and Gear axis tilt straight line, the gear teeth start engagement and be disengaged from being all gradually, thus stable drive, Noise is little, and the most this engagement system also reduces the foozle impact on transmission.And export helical gear 41 and transmit tooth The registration of wheel 42 is big.Can reduce the load of every pair of gear teeth, thus the relative bearing capacity that improve gear, extend tooth The service life of wheel, and make stable drive.

In order to make wire feed process more stable.It is installation portion that friction transmits the axial two ends of wheel 21, is provided with arcuation in the middle part of it Annular recess 211, the inwall of this annular recess 211 is evenly equipped with friction convex tendon 212.

Claims

1. a wire feeder for 3D printer, includes mounting seat, the transfer assembly being set up in mounting seat, transfer assembly bag Including friction and transmit wheel and with friction transmission wheel in the pinch roller being longitudinally set up in parallel, pinch roller and friction transmit between having between taking turns Gap, this gap is material extrusion passage, and added being provided with of mounting seat drives friction to transmit the driving motor that wheel rotates, it is characterised in that: institute The mounting seat stated is provided with the transfer assembly of at least two horizontal laid out in parallel of group, and it is upper respectively that the friction in each group transfer assembly transmits wheel It is provided with and drives the STATEMENT OF FEDERALLY SPONSORED of motor linkage.

The wire feeder of 3D printer the most according to claim 1, it is characterised in that: described STATEMENT OF FEDERALLY SPONSORED includes and drives The output helical gear moving motor linkage and the travelling gear engaged with output helical gear, friction transmits to be taken turns by connecting shaft and transmission Gear-linked.

The wire feeder of 3D printer the most according to claim 1 and 2, it is characterised in that: described friction transmits wheel Axially two ends are installation portion, be provided with the annular recess of arcuation, the inwall of this annular recess is evenly equipped with friction convex tendon in the middle part of it.