Filament cutting mechanism for 3D printers with fused deposition system

Abstract

The invention relates to a filament cutting mechanism for 3D printers with a fused deposition system suitable for all printers, which prevents the displacement of the print head during filament cutting.

Description

Technical Field of the InventionThe invention relates to a filament cutting mechanism for 3D printers with a fused deposition system suitable for all printers, which prevents the displacement of the print head during filament cutting.State of the ArtThe displacement of the print head during filament cutting leads to loss of time and complication of the process. The displacement of the print head during filament cutting causes problems. the displacement of the head can cause faulty or missing layers due to sudden interruption of the filament. This can disrupt the integrity of the print. When the print head moves to a different position, temperature changes can affect the flow of the filament. This can cause filament adhesion problems or further leakage. The movement of the head can damage the surface of the previous layers. This can lead to poor adhesion between layers.Interruption of the printing process can lead to material waste and extended project completion time. Inconsistency between layers can adversely affect the surface quality of the final product, which can lead to aesthetic and functional problems.When the systems in the state of the art are examined, there is a need for a system that allows users to perform the filament change process quickly and smoothly, while at the same time increasing production efficiency by accelerating the filament change process through the cutting process. The automatic cutting process ensures that the filament is cut accurately, improving the print quality. The developed system increases the experience of users by enabling them to carry out processes with less intervention.Summary and Objects of the InventionThe invention relates to a filament cutting mechanism for 3D printers with a fused deposition system suitable for all printers, which prevents the displacement of the print head during filament cutting.An object of the invention is to enable users to perform the filament change process quickly and smoothly. At the same time, it is to accelerate the filament change process through the cutting process, increasing production efficiency.Another object of the invention is to improve the print quality by ensuring that the filament is cut accurately. The developed system increases the experience of users by enabling them to carry out processes with less intervention.Another object of the invention is to enable users to print in color with the possibility of changing the filament. Thus, it aims to enrich 3D printer experiences.Another object of the invention is to provide a solution to existing colorless FDM printers, enabling the development of a print head suitable for each printer. This print head provides the cutting process required during filament change.Description of the DrawingsFig. 1. Drawing showing the filament cutting mechanism of the invention.Description of the References in the Drawings1. Motor2. Gearbox upper body3. Gear4. Cutting Gear5. Encoder gear6. Gearbox Lower Body7. Control circuitDetailed Description of the InventionThe invention relates to a filament cutting mechanism for 3D printers with a fused deposition system suitable for all printers, which prevents the displacement of the print head during filament cutting.Filament cutting mechanism for 3D printers with fused deposition system consists of a motor (1), a gearbox upper body (2), a gear (3), a cutting gear (4), an encoder gear (5), a gearbox lower body (6), and a control circuit (7).The motor (1) is the main source of movement of the system and moves the filament cutting mechanism. This motor is equipped with a specially designed reducer for the purpose of producing an amplified torque. The reducer increases the torque of the motor (1) by reducing its speed, thus achieving a more precise and powerful movement. This is particularly important at the cutting stage of the filament. In the preferred embodiment of the invention, the motor works with direct current.The encoder continuously monitors the movement of the motor (1). The encoder precisely measures the speed, direction and position of the shaft of the motor (5) and transmits this data to the speed and direction control circuit (7). This control circuit (7) regulates the speed and direction of the motor (1) according to the data from the encoder. Thanks to the feedback loop, the movements of the motor (1) are optimized and the print head or filament cutting mechanism is operated in the correct position. An encoder gear (5) is provided in the encoder that allows to measure the rotational movement of the encoder.The gearbox upper body (2) and the gearbox lower body (6) are fixed together to form the gearbox. The motor (1) and the control board (7) are installed on the gearbox. Gear (3), cutting gear (4), and encoder gear (5) are located between the gearbox upper body (2) and the gearbox lower body (6). The gear (3) increases the rotational force from the motor (1). Cutting gear (4) ensures that the filament is divided into two with the blades thereon. The encoder gear (5) controls the position of the blade of the cutting gear (4).Cutting the filament that has deteriorated due to temperature allows the filament to be withdrawn and a different filament to be used afterwards. The filament cutting mechanism for 3D printers with fused deposition system provides flexibility, especially in multi-color or multi-material printing, making printing processes of the users more efficient. It also reduces manual interventions in the filament change process.For 3D printers with fused deposition system, the filament cutting mechanism is located between the extruder section and the heater tip on the print head. During printing, the motor is activated in the direction of cutting by the signal sent from the main processor to the control circuit (7). This movement is transmitted to the cutting gear by increasing the force through the gears. The sharp blade in the cutting gear cleanly splits the filament in half. The encoder gear (5) connected to the potentiometer on the control circuit (7) continuously controls the position of the cutting gear (4), ensuring that the gear reaches the target position. When the target position is reached, the control circuit (7) operates the motor in the opposite direction, returning it to the initial position.

Claims

1. A filament cutting mechanism for 3D printers, characterized in that it comprises:- at least one motor (1) comprising at least one reducer that increases the torque by reducing the speed of the motor (1), measures the speed, direction, and position of the shaft of the motor (5), and sends these data to the speed and direction control circuit (7); and ensuring the movement the filament cutting mechanism- at least one gearbox formed by fixing the gearbox upper body (2) and the gearbox lower body (6) to each other, including the encoder gear (5) connected to the potentiometer controlling the position of the cutting gear (4) and ensuring that the gear reaches the target position; the gear (3) increasing the rotational force from the motor (1); and the cutting gear (4) rotating the potentiometer by moving together with the encoder gear (5) and splitting the filament into two with the blades thereon,- at least one control circuit (7) installed on the gearbox, adjusting the speed and direction of the motor (1) according to the data from the encoder (5) and transmitting it to the motor (1), and when the target position is reached, operating the motor (1) in the opposite direction, returning it to the initial position.

2. A filament cutting mechanism for 3D printers according to claim 1, characterized in that it comprises an electric motor (1) operating with direct current.

Images