3D Printer Nozzle Clogging Prevention Techniques

A device for cleaning small diameter 3D printing nozzles without damaging the inner wall. The device uses a connected pipe that can be inserted into the nozzle and filled with fluids of different viscosities. A pump pushes the fluids through the connected pipe into the nozzle. A low viscosity fluid is used to wash away molten material. A high viscosity fluid is used to polish the inner wall. A heating device warms the fluid in the connected pipe to prevent solidification. This allows thorough cleaning of small diameter nozzles without damage or alignment issues.

Source

Anti-blocking printing nozzle for 3D printers that prevents material clogging and extends printer life. The nozzle has a conical head with an annular heating groove and an electric heating wire inside. Above the groove is a closing plate. When printing stops, an electromagnet closes the head, pushing material back. A slide plate seals the threaded ring. A barrel collects reversed material. The heating wire prevents condensing. This system prevents material buildup, clogging, and damage when printing stops.

Source

3D printer nozzle with anti-clogging feature to prevent print head clogging during idle periods. The nozzle has an internal heating element and heat conduction tube that can be activated when printing stops. This keeps the piping inside the nozzle body heated to prevent solidification of melted material. A snap-fit connection between the print head and body allows easy installation/removal. Protective covers over the nozzle opening prevent dust ingress.

Source

3D printing nozzle design with an internal anti-clogging mechanism that removes residues from the extrusion hole after printing to prevent blockages. The nozzle has a heating block with multiple heating elements, a nozzle, and a base. The heating block has a driven element made of shape memory alloy. When heated, the driven element contracts, pulling back an anti-clogging rod inside the nozzle. This removes any remaining molten filament in the extrusion hole. When the temperature drops, the driven element expands again, pushing the rod back into the hole. This prevents clogs by scraping out residue.

Source

A 3D printing nozzle module with real-time monitoring of viscosity and temperature of the printing material inside the nozzle to prevent clogging and extrusion issues. The module has a stirring unit with a rotating frame inside the nozzle body, a heating unit with a wire to heat the material, and a monitoring unit with sensors to detect viscosity and temperature. This allows controlling the printing parameters and alerting if limits are exceeded.

Source

An anti-clogging and quick-clearing nozzle for 3D printing that reduces blockages and simplifies cleaning compared to conventional nozzles. The nozzle has a rotating cleaning component that can move the nozzle position to switch between clogged and unclogged nozzles. This allows clearing a clogged nozzle by swapping it with an unclogged one without disassembly. The cleaning component also adjusts the material flow channel to redirect output from clogged nozzles. This prevents complete blockages and enables quick clearing. The component rotates using a motor and gear system.

Source

Integrated 3D printing module with features like anti-clogging, environment control, and automated leveling to address common issues with FDM 3D printers. The module has a printing body with a nozzle inside, and an anti-clogging device inside the body. This device has sections for prevention, detection, and cleaning of nozzle blockages. It also has sensors to monitor temperature, humidity, and air quality inside the printer, along with systems to adjust temperature, humidity, and airflow. The module can also level the print bed automatically and display print information.

Source

A three-dimensional shaping device that enables efficient cleaning of nozzles without significantly moving the dispensing unit. The device has a dispensing unit, cleaning mechanism, stage, moving unit, and control unit. The cleaning mechanism includes a cleaning unit with a nozzle purge and brush and a recovery unit. The moving unit moves the cleaning unit to clean the nozzle. This allows short access for cleaning by moving only the cleaning unit relative to the stage versus the entire dispensing unit.

Source

A 3D metal object printer that can maintain clean nozzles and orifices during printing to prevent drop defects and satellite drops. The printer uses an orifice cleaning tool that can be moved across the orifice and nozzle surface to remove any adhered metal drops. This allows cleaning without needing to shut down and disassemble the printer.

Source

Anti-clogging 3D printer nozzle that prevents material buildup and reduces blockages during extrusion. The nozzle has a wiping mechanism that scrubs the inner walls as the extruder moves. The wiping component is a bristled wiper bar mounted on the mixing rod. This bar scrapes the walls during retracts to remove excess material. The nozzle also has a discharge guide mechanism with heating elements to melt and clear any clogs. The nozzle body has a bottom discharge assembly with a converging nozzle and secondary heating. The nozzle body connects to the top cover via a shaft with a servo motor to drive the mixing rod. The nozzle also has positioning components and reinforcing ribs.

Source

A nozzle for 3D printing or laser cladding the inner walls of tubes. The nozzle has a self-cleaning function to prevent powder accumulation and maintain quality during inner tube additive manufacturing. The nozzle has separate powder and coolant flow paths, with a partition wall between them. It also has a filter outside the nozzle to collect unused powder.

Source

An intelligent 3D printer with optimized nozzle design to improve print quality and reduce waste. The printer has a showerhead-style nozzle that can prevent clogs, reduce dust, and improve adhesion compared to traditional nozzles. The showerhead design allows material to be dispersed in a wider pattern, reducing the chance of clogs and enabling thinner layers. It also has a self-cleaning feature that removes excess material after printing. The showerhead shape allows for easier material removal compared to a traditional nozzle tip. Additionally, the wider material spread reduces material accumulation on the nozzle during printing.

Source

3D printer nozzle anti-clogging mechanism that uses temperature sensors to control extrusion steps and prevent material buildup. The mechanism has an internal feed pipe, feeding clip, and wire feed wheel. The nozzle has a heating block, elastic strip, and guide plate with threaded holes. A threaded rod screws through the holes to connect the parts. The nozzle also has a small diameter threaded hole for the feed pipe. A temperature sensor is mounted on the main board. The feed pipe is inserted into the nozzle and material is pushed into the nozzle until it can't go further. This allows material to be passed through the clogged nozzle by feeding it from the bottom. The temperature sensor detects when the material has reached the nozzle and triggers the extruder to stop. This prevents over-extrusion and further clogging.

Source

Anti-blocking nozzle for 3D printers that uses internal heating to prevent material from solidifying and clogging the nozzle. The nozzle has a main body, feed pipe, and discharge head. Inside the main body, there is a material delivery chamber with a heating wire layer wrapped around it. When the printer is in use, an external power supply is connected to the heating wire to heat the chamber. This heats the material inside the chamber to prevent it from solidifying and clogging the nozzle. The chamber also has a heat-conducting layer that transfers heat to the feed pipe and discharge head to further prevent material from solidifying there. An insulating layer outside the heating wire prevents overheating and scalding the printer operator.

Source

Anti-clogging 3D printer nozzle with a feeding pipe below the mounting plate that has symmetrically distributed feeding holes. The feeding pipe has an anti-clogging mechanism with a base plate, drive shaft, stirring pieces, and a fixed block. A heating wire inside the pipe increases temperature to prevent solidification. The drive shaft rotates stirring pieces to mix material. Scrapers on the shaft remove material buildup. This prevents blockages by stirring, heating, and scraping the feeding pipe contents.

Source

A device to maintain and clean the nozzle of a binder jet 3D printer without clogging. The device has a body with a water pump, inlet, and outlet pipes. Parallel branches connect the outlet to both a flushing ink channel and a flushing nozzle hole channel. This allows flushing ink to be pumped through the nozzle and outlet pipes simultaneously, simultaneously cleaning the nozzle holes without excess pressure. The device provides a simple and effective method to maintain the nozzle of a binder jet 3D printer without the complex setup and multiple pipelines required in prior art methods.

Source

An integrated mixer, conveyor, and nozzle device for use in 3D printers to construct buildings. The device mixes the material, conveys it, and then directly extrudes it from the nozzle without any flexible hoses in between that could cause clogs. The key components are connected together in a single rigid unit.

Source

An injection molding machine, 3D printer, and abnormality detection method can detect clogging or other issues in the nozzle during operation. The injection machine has a piston/cylinder resin extruder with a target pressure setting. It compares the target pressure to the measured pressure to detect anomalies. When pressure deviation indicates nozzle blockage or other problems, it can stop printing and store the nozzle position for troubleshooting.

Source

A 3D printer with a unique nozzle design that allows easy cleaning and prevents material buildup. The printer has a removable nozzle assembly that can be taken out and cleaned without disassembling the entire printer. The nozzle assembly has a retractable blocking mechanism that can be lowered to prevent excess material from solidifying in the nozzle. The blocking mechanism can be raised to clear the nozzle before printing. This prevents clogs and simplifies nozzle maintenance.

Source

Washable multi-material 3D printer nozzle that allows cleaning of the material guide tube without disassembly, improving printing efficiency and preventing blockages and material mixing. The nozzle has a rotating assembly inside the nozzle casing that drives the material guide pipe and heating device to rotate between printing and cleaning positions. A discharge port for printing and a separate cleaning port for flushing are positioned differently. This lets swapping materials and cleaning simultaneous by rotating the assembly.

Source