CN107187060A

CN107187060A - 3D printer gets stuck warning device

Info

Publication number: CN107187060A
Application number: CN201710418193.6A
Authority: CN
Inventors: 胡达广
Original assignee: He Jinglian
Current assignee: He Jinglian
Priority date: 2017-06-06
Filing date: 2017-06-06
Publication date: 2017-09-22

Abstract

3D printer gets stuck warning device, and the invention belongs to 3D printer technology a field.In order to allow 3D printer to find card silk and fracture of wire phenomenon in time, it is to avoid the resources such as electric power, machinery are scrapped and wasted to model, and also to allow the computer palm according to the usage amount and surplus of material silk, this invention takes following technical measures：Multipole magnetic field is filled with the excircle of thread pressing wheel, while installing Hall sensor, Hall sensor connection computer at the excircle of thread pressing wheel；Advantage of this is that：When expecting that silk ribbon dynamic pressure silk wheel is rotated, Hall sensor will sense the change in thread pressing wheel excircle magnetic field and export synchronous electric pulse.Computer just can determine whether that the phenomenon of card silk fracture of wire occurs by monitoring the output of Hall sensor.So as to prevent scrapping for model.

Description

3D printer gets stuck warning device

Technical field

The invention belongs to 3D printer technology a field.

Background technology

On 3D printer be equipped with feed device, its work have be to shower nozzle conveying printing materials silk or silk (material silk and Expect that silk is so-called consumptive material), while being fed the certain thrust of silk (also referred to as pressure), enable it to extrude spinneret by shower nozzle.But, In actual use, often go out a kind of situation, machine in " normal " operating, but be below shower nozzle it is absolutely empty and, except beginning Fraction outside, most of below shower nozzle is all that empty and alignment system is still ceaselessly operated, and is exactly that shower nozzle does not spray Silk.Shutdown inspection is just found that while feed device still in operating, but material silk is stuck, it is impossible to shower nozzle is pressed, so sprayed Head also just can not spinneret.The reason for card silk is found in practice is a lot, and for example silk size is uneven or has bubble to be stuck in pipeline Or in other ways, rotation of disc and expect that the path of silk is obstructed, it is to wind difficulty in disk to grade also to occur most.Above-mentioned These situations can not be expected completely to prevent.In order to prevent the generation of such case, people manually have to be beaten 3D The work of print machine is manually supervised.It is done so that labour cost can be greatly increased again, and it is strong to add the work of workman Degree.

The defect that card silk easily occurs for 3D printer also resides in its structure and caused.In general, the 3D under prior art The feed device of printer is made up of motor, wire feed rolls and thread pressing wheel.Wire feed rolls is on motor shaft, and thread pressing wheel is material silk It is pressed on wire feed rolls, it is adjacent to wire feed rolls.The structure of wire feed rolls is general all essentially identical with gear, will lead to when motor is rotated Crossing wire feed rolls drives material silk to press to shower nozzle.But, the course of conveying of material silk once occurs blocking or larger resistance, and material silk is with sending This is easy to produce skidding silk wheel, and at this moment silk can line footpath diminishes material by the tooth truncated section on wire feed rolls.Slip time is got over Long, such case is more serious.It is shaved after the material silk thread footpath of part diminishes, wire feed rolls also diminishes even completely to its active force Disappear.Such vicious circle, soon, wire feed rolls just lose the motive force to expecting silk, and material silk cannot be moved.Although at this moment Alignment system is still worked hard by blas, still, and shower nozzle is unable to below spinneret be empty.If such case is sent out not in time It is existing, it is stopped, model will become waste product, only electric power and wear and tear in machines can be wasted with entering so to print.Therefore, existing skill 3D printer under art also has very big room for improvement in this respect.

The content of the invention

In order to allow 3D printer to find card silk and fracture of wire phenomenon in time, it is to avoid electric power, machinery etc. are scrapped and wasted to model Resource, and also to allow the computer palm according to the usage amount and surplus of material silk, this invention takes following technical measures：In pressure The excircle of silk wheel fills multipole magnetic field with, while installing Hall sensor, Hall sensor at the excircle of thread pressing wheel Connect computer.

Advantage of this is that：Multipole magnetic field is filled with the excircle of thread pressing wheel while at the excircle close to thread pressing wheel Hall sensor is installed, so, when expecting that silk ribbon dynamic pressure silk wheel is rotated, Hall sensor will sense thread pressing wheel excircle magnetic Change and export synchronous electric pulse.Hall sensor is connected to computer, and computer just can be by monitoring hall sensing The phenomenon for exporting to determine whether card silk fracture of wire of device occurs.When normal print, Hall sensor should have corresponding conjunction The pulse output of reason.The pulse that if it does not have pulse output or it is exported is abnormal, computer is it may be concluded that machine is produced Card silk or fracture of wire, then the computer execution of time-out printing program at once and to master alarm, card silk is handled or disconnected by owner The failures such as silk, so as to prevent scrapping for model.

On the other hand, the amount of spin of thread pressing wheel and the number of pulses of Hall sensor output can reflect making for material silk simultaneously Consumption.The usage amount for the pulse measurement material silk that this sample is bright can just to be exported by Hall sensor and calculate surplus.Make Whether 3D printer can enough with regard to that can calculate remaining material silk in film output disk when printing at the beginning, if can not point out in advance completely Expect that silk is not enough or open print alarm at the beginning, submit to user to note, it is to avoid in causing in print procedure because of material silk deficiency Way stops and influences the quality of printer model.

Brief description of the drawings

Fig. 1 is that 3D printer gets stuck the structural representation of warning device.

In figure：Expect silk 1, wire feed rolls 2, motor 3, Hall sensor 4, thread pressing wheel 5.

Embodiment

1 in order to allow 3D printer to find card silk or fracture of wire phenomenon in time, it is to avoid the money such as electric power, machinery is scrapped and wasted to model Source, and also to allow computer to grasp the usage amount and surplus for expecting silk, the present invention fills multipole with the excircle of thread pressing wheel While magnetic field, Hall sensor also is being mounted with the excircle of thread pressing wheel, thread pressing wheel is read with Hall sensor The feed speed of rotating speed and material silk.Its course of work is：Multipole magnetic field is filled with the excircle of thread pressing wheel, while in close pressure Hall sensor is installed, such structure drives material silk to advance when motor at the excircle of silk wheel, material silk ribbon dynamic pressure silk wheel is rotated When, Hall sensor will sense the change in thread pressing wheel excircle magnetic field and output electric pulse.Hall sensor is connected to meter Calculation machine, computer just can be monitored and calculate to these pulses, the working condition for understanding machine；For example beaten when normally During print, Hall sensor should have corresponding rational pulse output（The rational pulse period）.If it does not have pulse export or The pulse that it is exported is abnormal（Cycle is unreasonable）, for example, expect that silk makes feeding slack-off because of clamping stagnation, at this moment Hall sensor is exported Pulse cycle synchronisation it is elongated, continue so printing and go down and will necessarily have impact on the quality of model because spinneret is not enough.According to The cycle of the pulse of sensor output is than normally long suddenly, and computer is it may be concluded that machine generates card silk, then computer The execution of time-out printing program at once and to master alarm, handles card silk failure, so as to prevent scrapping for model by owner；When Occur fracture of wire during normal print or when greatly retardance makes the feeding of silk can not carry out completely, thread pressing wheel is not rotated, Hall sensor is also exported without pulse.At this moment COMPUTER DETECTION less than pulse it may determine that being that fracture of wire or serious clamping stagnation stop Only perform print job, and alert process in time.

On the other hand, the amount of spin of thread pressing wheel and the number of pulses of Hall sensor output can reflect the use of material silk Amount.Computer just can determine whether card silk by monitoring the pulse of Hall sensor output, the phenomenon of fracture of wire occurs, together When the pulse that can also be exported by Hall sensor measure the usage amount and surplus of silk.This sample is bright can just to be measured Expect the usage amount and surplus of silk, enabling 3D printer, just prompting in advance expects silk deficiency or opened to print one when printing at the beginning Start alarm, submit to using all noting, it is to avoid influence impression block because material silk deficiency causes midway to stop in print procedure The quality of type.

Claims

1.3D printers get stuck warning device, mainly including Hall sensor, it is characterised in that：Filled with the excircle of thread pressing wheel Multipole magnetic field, while installing Hall sensor, Hall sensor connection computer at the excircle of thread pressing wheel.