CN111531888A

CN111531888A - Automatic device that reloads of 3D printer that can incessant print

Info

Publication number: CN111531888A
Application number: CN202010491976.9A
Authority: CN
Inventors: 范涛; 贺琦; 周保根
Original assignee: Kunshan Miracle 3d Technology Co ltd
Current assignee: Kunshan Miracle 3d Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2020-08-14

Abstract

The utility model provides an automatic device that reloads of 3D printer that can incessantly print, includes the main mount pad, install extrusion motor, flexible motor, connecting ferrule respectively above the main mount pad, install the initiative above the extrusion motor and extrude the wheel, install passive friction pulley, draft arm above the flexible motor, consumptive material stand pipe and consumptive material conveyer pipe are installed respectively to connecting ferrule upper end and lower extreme, waist shape slotted hole has been seted up to main mount pad bottom, connecting ferrule installs the waist shape slotted hole of main mount pad bottom is downthehole, under the effect of the control unit, flexible motor can drive and install above the motor shaft draft arm with passive friction pulley follows the axis direction front and back repetitive motion of flexible motor. Compared with the prior art, the automatic material changing device can realize automatic material changing under the premise of continuous printing when consumable materials are used up, not only reduces the labor intensity of operators, but also ensures the printing success rate and the printing quality.

Description

Automatic device that reloads of 3D printer that can incessant print

Technical Field

The invention relates to the technical field of 3D printing rapid forming, in particular to an automatic material changing device of a 3D printer capable of continuously printing.

Background

With the maturity and development of 3D printing technology, 3D printer application occasion is also wider and wider. The most popular of the current markets are 3D printers based on Fused Deposition Modeling (FDM) processes. The printer melts the linear consumable material at high temperature, then extrudes the consumable material according to a preset track through a spray head, and finally cools, solidifies and forms the consumable material. Consumables used by a 3D printer based on an FDM process are generally trays wound by packages, the weight of a single roll is mainly 1kg, and when the consumables are exhausted, a customer needs to manually replace a new tray in advance. In the using process, an operator often encounters the situation that the material tray is not replaced in time, so that the machine is idle and the model is scrapped after the consumables are used up; or due to midway stopping and changing materials, the model has obvious splicing marks at the material changing position, thereby influencing the appearance quality, the strength and the like of the model. Aiming at the situation, various solutions are also provided by a plurality of patents, but the methods are complicated in structure, or the machine needs to pause printing in the process of executing automatic material changing, and the extruder rotates reversely to withdraw a residual section of consumable material in the consumable material guide pipe, so that new consumable material can be introduced, and the actual continuous printing automatic material changing cannot be realized.

Disclosure of Invention

In view of the above situation, the invention provides an automatic material changing device for a 3D printer capable of printing uninterruptedly, which aims to realize automatic monitoring and material changing after consumables are used up, and in the material changing process, spare consumables can be directly butted to the back of residual consumables in a consumable guide tube to continuously feed wires for a printing nozzle, so that the effect that the printer can print uninterruptedly in the whole process is achieved.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the utility model provides an automatic device that reloads of 3D printer that can incessantly print, includes the main mount pad, install extrusion motor, flexible motor, connecting card cover above the main mount pad respectively, install the initiative above the extrusion motor and extrude the wheel, install passive friction pulley, draft arm above the flexible motor, consumptive material stand pipe and consumptive material conveyer pipe are installed respectively to connecting card cover upper end and lower extreme, waist shape slotted hole has been seted up to main mount pad bottom, connecting card cover is installed the waist shape slotted hole of main mount pad bottom is downthehole, under the effect of the control unit, flexible motor can drive the draft arm with passive friction pulley is followed the axis direction back and forth repetitive motion of flexible motor.

Preferably, the driving extrusion wheel is fixedly connected to an output shaft of the extrusion motor and can synchronously rotate with a motor shaft, and main grooves and auxiliary grooves are uniformly distributed on the driving extrusion wheel.

Preferably, the passive friction is fixed on an output shaft of the telescopic motor in the axis direction, and can freely rotate around the axis of the telescopic motor in the circumferential direction, a sensor for monitoring the self rotating speed of the passive friction wheel is installed in the passive friction wheel, a tooth-shaped structure for increasing the friction force of the consumable is designed on the outer surface of the passive friction wheel, and oblique angles for guiding are reserved at two ends of the tooth-shaped structure.

Preferably, one end of the traction arm is fixedly connected to an output shaft of the telescopic motor, and the other end of the traction arm is fixedly connected with the consumable guide pipe.

Preferably, the upper end of the consumable guide tube is designed into a bell mouth shape capable of guiding so as to facilitate the entry of the consumable.

Preferably, the consumable guide tube and the consumable conveying tube are respectively inserted into the upper end and the lower end of the connecting clamping sleeve, and the axes of the consumable guide tube and the consumable conveying tube are overlapped.

The automatic material changing device has the advantages that through the use of the automatic material changing device, the use condition of consumable materials can be automatically monitored by using the specially-made passive friction wheel in the working process of the printer, when the consumable materials are used up, the automatic material changing device can be automatically switched into a standby material roll for printing, in addition, in the switching process, the 3D printer does not need to be stopped for waiting, the residual consumable materials in the spray head do not need to be reversely drawn out, and therefore the real uninterrupted automatic material changing is realized, the labor intensity of operators is reduced, and the printing success rate and the printing quality are ensured.

The invention is further described below with reference to the figures and examples.

Drawings

FIG. 1 is a schematic view of the structure of the main groove consumable of the present invention during operation.

FIG. 2 is a schematic cross-sectional view of the consumable of the main slot of the present invention during operation.

FIG. 3 is a schematic view of the structure of the auxiliary groove consumable of the present invention during operation.

FIG. 4 is a schematic cross-sectional view of the consumable of the sub-groove of the present invention in operation.

Reference numerals indicate the same.

1-a main mounting seat; 2-extruding the motor; 3-a telescopic motor; 4-connecting the ferrule; 5-driving extrusion wheel; 6-a passive friction wheel; 7-a traction arm; 101-a kidney-shaped long slot; 401-consumable guide tube; 402-consumable delivery tube; 501-main groove; 502-minor groove.

Detailed Description

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

As shown in the figure, the automatic reloading device of 3D printer that can incessantly print, includes main mount pad 1, install extrusion motor 2, flexible motor 3, connecting sleeve chuck 4 respectively above the main mount pad, install initiative extrusion wheel 5 above the extrusion motor 2, install passive friction pulley 6, draft arm 7 above the flexible motor, consumable stand pipe 401 and consumable conveyer pipe 402 are installed respectively to connecting sleeve chuck 4 upper end and lower extreme, waist shape slotted hole 101 has been seted up to main mount pad bottom, connecting sleeve chuck 4 installs in the waist shape slotted hole 101 of main mount pad 1 bottom, under control signal's effect, flexible motor 3 can drive draft arm 7 with passive friction pulley 6 follows the axis direction back and forth repetitive motion of flexible motor 3.

Preferably, the driving extrusion wheel 5 is fixedly connected to an output shaft of the extrusion motor 2 and can rotate synchronously with a motor shaft, and the driving extrusion wheel 2 is uniformly distributed with a main groove 501 and an auxiliary groove 502.

Preferably, the driven friction wheel 6 is fixed on an output shaft of the telescopic motor 3 in the axial direction and can freely rotate around the axial line of the telescopic motor 3 in the circumferential direction, a sensor for monitoring the self rotating speed of the driven friction wheel 6 is installed in the driven friction wheel 6, a tooth-shaped structure for increasing the friction force of the consumable is designed on the outer surface of the driven friction wheel 6, and oblique angles for guiding are reserved at two ends of the tooth-shaped structure.

Preferably, one end of the traction arm 7 is fixedly connected to a motor shaft of the telescopic motor 3, and the other end of the traction arm is fixedly connected with the consumable guide tube 401.

Preferably, the upper end of the consumable guiding tube 401 is designed into a bell mouth shape capable of guiding so as to facilitate the entry of the consumable.

Preferably, the consumable guide tube 401 and the consumable delivery tube 402 are inserted into the upper end and the lower end of the connecting ferrule 4, and the axes of the consumable guide tube 401 and the consumable delivery tube 402 coincide.

When the embodiment of the invention works, printing consumables are pre-loaded in the main groove and the auxiliary groove of the driving extrusion wheel, and if the consumables in the main groove are used for printing at first, the telescopic motor is in an extension state at the moment, the driven friction wheel is in a position matched with the main groove, and the consumables in the main groove are conveyed downwards under the combined action of the main groove and the driven friction wheel, pass through the consumables guide pipe and the consumables conveying pipe and finally reach the nozzle printing position; when the consumable materials in the main groove are used up, the sensor in the passive friction wheel detects that the passive friction wheel stops rotating, the control unit sends an action instruction, the telescopic motor is instantly switched to a contraction state from an extension state, and drives the passive friction wheel and the traction arm which are installed on the telescopic motor shaft to synchronously move (the traction arm drives the consumable material guide pipe and the connecting clamping groove connected with the consumable material guide pipe, and the consumable material conveying pipe together move along the waist-shaped long slotted hole on the main mounting seat), the passive friction wheel is switched to a position matched with the auxiliary groove on the active extrusion wheel, and the consumable materials pre-installed in the auxiliary groove move downwards under the combined action of the auxiliary groove and the passive friction wheel, are automatically butted to the tail end of the consumable materials of the main groove which are used up before, and continuously supply for wire feeding of the printing nozzle. In the process, the 3D printer is always kept in a normal and uninterrupted printing state, the machine does not need to be stopped for waiting, and the extrusion motor does not need to be reversed and returned.

The embodiment of the invention has simple structure and reasonable design, can automatically detect when the consumable materials are used up, and automatically switch the consumable materials into new consumable materials on the premise of not needing stop waiting or manual operation, thereby not only reducing the labor intensity of operators, but also ensuring the success rate of model printing and the printing quality.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an automatic device that reloads of 3D printer that can incessantly print, includes the main mount pad, install extrusion motor, flexible motor, connecting card cover above the main mount pad respectively, install the initiative above the extrusion motor and extrude the wheel, install passive friction pulley, draft arm above the flexible motor, consumptive material stand pipe and consumptive material conveyer pipe are installed respectively to connecting card cover upper end and lower extreme, waist shape slotted hole has been seted up to main mount pad bottom, connecting card cover is installed the waist shape slotted hole of main mount pad bottom is downthehole, under the effect of the control unit, flexible motor can drive the draft arm with passive friction pulley is followed the axis direction back and forth repetitive motion of flexible motor.

2. The automatic material changing device of the 3D printer capable of continuously printing according to claim 1, wherein the driving extrusion wheel is fixedly connected to an output shaft of the extrusion motor and can synchronously rotate with a motor shaft, and main grooves and auxiliary grooves are uniformly distributed on the driving extrusion wheel.

3. The automatic material changing device of the 3D printer capable of continuously printing according to claim 1, wherein the driven friction wheel is fixed on an output shaft of the telescopic motor and can freely rotate around an axis of the telescopic motor in a circumferential direction, a sensor for monitoring the self rotating speed of the driven friction wheel is installed in the driven friction wheel, a tooth-shaped structure for increasing the friction force of consumables is designed on the outer surface of the driven friction wheel, and oblique angles for guiding are arranged at two ends of the tooth-shaped structure.

4. One end of the traction arm is fixedly connected to an output shaft of the telescopic motor, and the other end of the traction arm is fixedly connected with the consumable guide pipe.

5. The upper end of the consumable guide tube is designed into a horn mouth shape capable of guiding so as to facilitate the entry of the consumable.

6. The consumable guide tube and the consumable conveying tube are respectively inserted into the upper end and the lower end of the connecting clamping sleeve, and the axes of the consumable guide tube and the consumable conveying tube are overlapped.