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DE-212025000055-U1 - Wire extrusion

DE212025000055U1DE 212025000055 U1DE212025000055 U1DE 212025000055U1DE-212025000055-U1

Abstract

Wire extrusion press, characterized by a frame, as well as a feed unit, an extruder unit, a diameter setting unit and a winding unit, all arranged on the frame, the feed unit has a hopper, wherein the extruder unit comprises an extruder cylinder and an extruder screw arranged in the extruder cylinder, wherein a bottom of the hopper is connected to an interior of the extruder cylinder, wherein the extruder screw is positively connected to an extruder motor, wherein the extruder cylinder is provided with an extrusion die and a heating device which serves to melt a raw material of a filament in the extruder cylinder, wherein the extruder screw is configured to convey the raw material of the filament in the molten state through the extrusion die, thereby forming the filament, wherein the diameter setting unit comprises a pair of rollers, a drive motor for rotating the pair of rollers and a diameter sensor for detecting a diameter of the filament, wherein the pair of rollers is designed to grip and move the filament, and the winding unit comprises a coil and a spindle motor that rotates the coil.

Assignees

  • DONGGUAN IMAI INTELLIGENT TECH CO LTD
  • DONGGUAN SONGMEI NEW MATERIAL TECH CO LTD

Dates

Publication Date
20260513
Application Date
20251031
Priority Date
20251031

Claims (9)

  1. Wire extrusion press, characterized by a frame, a feed unit, an extruder unit, a diameter setting unit, and a winding unit, all arranged on the frame, wherein the feed unit has a hopper, wherein the extruder unit has an extruder cylinder and an extruder screw arranged in the extruder cylinder, wherein a bottom of the hopper is connected to an interior of the extruder cylinder, wherein the extruder screw is positively connected to an extruder motor, wherein the extruder cylinder is provided with an extrusion die and a heating device for molten the raw material of a filament in the extruder cylinder, wherein the extruder screw is configured to convey the raw material of the filament in the molten state through the extrusion die, thereby forming the filament, wherein the diameter setting unit comprises a pair of rollers, a drive motor for rotating the pair of rollers, and a diameter sensor for detecting the diameter of the filament, wherein the pair of rollers is configured is to grasp and move the filament, wherein the winding unit comprises a spool and a spindle motor that rotates the spool.
  2. Wire extrusion press according to Claim 1 , characterized in that the feed unit further has a level sensor for detecting a lack of material in the hopper.
  3. Wire extrusion press according to Claim 1 , characterized in that several heating device sections are arranged along an axial direction of the extruder cylinder, each heating device section being equipped with a temperature sensor for detecting a heating temperature of a respective heating device section, and the extrusion die and the hopper being arranged at axially opposite ends of the extruder cylinder.
  4. Wire extrusion press according to Claim 1 , characterized by a cooling unit on the frame, which is intended to cool the filament, wherein the cooling unit has several fans arranged along a direction of movement of the filament as well as a cooling air channel for guiding the filament, and wherein several of the fans are positioned below the filament, which moves horizontally.
  5. Wire extrusion press according to Claim 4 , characterized in that the frame is designed with a cavity enclosed from an environment, in which at least the extrusion die and the cooling air duct are located, wherein the fans are designed as supply air fans, conveying the outside air into the cavity and directing it onto the filament, and wherein the cooling unit further comprises an exhaust fan and a filter device, wherein the exhaust fan is designed to discharge air from the cavity to the outside, and wherein the filter device is arranged in an airflow generated by the exhaust fan to filter the air flowing to the outside.
  6. Wire extrusion according to Claim 1 , characterized in that the diameter sensor is attached to an entry side and/or an exit side of the roller pair, wherein the diameter setting unit further has an insertion device on the entry side of the roller pair, through which the filament is guided into the diameter adjustment unit.
  7. Wire extrusion press according to Claim 1 , characterized in that the pair of rollers comprises a traction roller and an encoder roller, wherein the drive motor is positively connected to the traction roller.
  8. Wire extrusion press according to Claim 1 , characterized in that the coil is rotatably connected to the frame via a spindle, wherein an optical grating gear device is attached to the spindle, and wherein the optical grating gear device comprises an optical grating sensor and a grating wheel.
  9. Wire extrusion press according to Claim 1 , characterized in that the winding unit further comprises a guide motor, a leadscrew, a slide bar and a guide carriage slidably mounted on the slide bar, wherein the slide bar runs parallel to the leadscrew, wherein the slide bar is rigidly connected to the frame, wherein the guide motor is positively connected to the guide carriage via the leadscrew to move the guide carriage along the slide bar, and wherein a direction of movement of the slide bar runs parallel to an axis of the coil.

Description

TECHNICAL AREA The application concerns the technical field of wire extrusion presses, in particular a wire extrusion press. STATE OF THE ART As is well known, with the spread of 3D printing, desktop 3D printers are gradually finding their way into homes, offices, and laboratories. 3D printing filaments (such as PLA, ABS, etc.) are the key materials for 3D printing. These are generally produced in large factories and are usually not sold in retail stores. Therefore, homes, offices, and laboratories that want to obtain small quantities of 3D printing filaments rely on other solutions, such as purchasing a desktop wire extrusion press for the production of small quantities of 3D printing filaments for their own use. However, due to their simple design and limited functionality, currently available desktop wire extrusion presses have shortcomings such that the produced filaments often have unacceptable diameter deviations, and that winding requires manual intervention, making operation costly. CONTENT OF THE REGISTRATION To solve the problems mentioned above, this application proposes a wire extrusion press. The wire extrusion press provided in this application has the following technical concept. A wire extrusion press comprises a frame, as well as a feed unit, an extruder unit, a diameter setting unit and a winding unit, all arranged on the frame; wherein the feed unit has a hopper; wherein the extruder unit comprises an extruder cylinder and an extruder screw arranged in the extruder cylinder, wherein a bottom of the hopper is connected to an interior of the extruder cylinder, wherein the extruder screw is positively connected to an extruder motor, wherein the extruder cylinder is provided with an extrusion die and a heating device which serves to melt a raw material of a filament in the extruder cylinder, wherein the extruder screw is configured to convey the raw material of the filament in the molten state through the extrusion die, thereby forming the filament; wherein the diameter setting unit comprises a pair of rollers, a drive motor for rotating the pair of rollers and a diameter sensor for detecting a diameter of the filament, wherein the pair of rollers is configured to grip the filament and move the filament; and wherein the winding unit comprises a spool and a spindle motor which rotates the spool. Preferably, the feed unit also has a level sensor for detecting a lack of material in the hopper. Preferably, several heating device sections are arranged along an axial direction of the extruder cylinder, each heating device section being equipped with a temperature sensor for detecting the heating temperature of the respective heating device section; the extrusion die and the hopper are arranged at axially opposite ends of the extruder cylinder. Preferably, the wire extrusion press comprises a cooling unit on the frame, which is provided for cooling the filament; wherein the cooling unit has several fans arranged along a direction of movement of the filament as well as a cooling air duct for guiding the filament, wherein several of the fans are positioned below the filament, which moves horizontally. Preferably, the frame is designed with a cavity enclosed by an environment, in which at least the extrusion die and the cooling air duct are located; wherein the fans are designed as a supply air fan, conveying outside air into the cavity and directing it onto the filament; and wherein the cooling unit further comprises an exhaust fan and a filter device, wherein the exhaust fan is designed to discharge the air from the interior to the outside, and wherein the filter device is arranged in an airflow generated by the exhaust fan to filter the air flowing outwards. Preferably, the diameter sensor is attached to an entry side and/or an exit side of the roller pair; wherein the diameter setting unit has an insertion device on the entry side of the roller pair through which the filament is guided into the diameter setting unit. Preferably, the pair of rollers consists of a traction roller and an encoder roller, wherein the drive motor is positively connected to the traction roller. Preferably the coil is rotatably connected to the frame via a spindle, wherein an optical grating gear device is attached to the spindle, and wherein the optical grating gear device comprises an optical grating sensor and a grating wheel. Preferably, the winding unit further comprises a guide motor, a leadscrew, a slide bar and a guide carriage slidably mounted on the slide bar, wherein the slide bar runs parallel to the leadscrew, wherein the slide bar is rigidly connected to the frame, wherein the guide motor is positively connected to the guide carriage via the leadscrew to move the guide carriage along the slide bar, and wherein a direction of movement of the slide bar runs parallel to an axis of the coil. In summary, the following advantageous technical effects of the present application can be identified: 1. The wire extrusio