Wire feeder head device of 3D printer
By designing stepper motors, wire feeding mechanisms and heat dissipation systems in 3D printers, the problems of disassembly, large space occupation and insufficient heat dissipation of wire feeders in the prior art are solved, and stable, powerful wire feeding and effective heat dissipation are achieved, improving the Print effect.
Patent Information
- Application Number
- CN202420594858.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing 3D printer wire feeder cannot be effectively disassembled, takes up a large space, lacks heat dissipation and insufficient wire feeding tension, resulting in unsuccessful printing and unsatisfactory use.
A 3D printer wire feeding head device including a stepper motor, a wire feeder rear box and a wire feeder front box is designed, and a wire feeding mechanism with motor gear, reduction gear, main feeding wheel and secondary feeding wheel is used, combined with the throat Tube heat dissipation fan and model heat dissipation fan enhance wire feeding and improve heat dissipation effect.
It realizes stable conveying of consumable wires, enhances wire feeding tension and overall heat dissipation, meets the wire feeding needs of 3D printers, and improves the printing effect.
Smart Images
Figure CN222271288U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printing, in particular to a wire feeding head device of a 3D printer. Background Art
[0002] Most of the existing 3D printer heads use gears and bearings to directly extrude the consumables and feed the wire. The gear is fixed on the stepper motor, and the bearing is fixed on the pressure arm. The pressure arm presses the consumables through a spring. When working, the stepper motor rotates and the consumables are squeezed out.
[0003] The utility model patent with announcement number CN204894529U discloses a 3D printer head wire feeder, which is composed of a load-bearing body, a pressure plate, a pressure arm, an adjustment device, a wire feeding driven wheel and a wire feeding friction wheel. A pressure arm and a wire feeding friction wheel are provided on the load-bearing body above the pressure plate, and a wire feeding driven wheel and an adjustment device are provided on the pressure arm. The wire feeding driven wheel is connected to the wire feeding friction wheel. The adjustment device is composed of a knob, an adjustment rod, an adjustment nut and a spring. The adjustment rod passes through the pressure arm, a knob is provided at one end of the adjustment rod, a spring is provided at the other end of the adjustment rod, and an adjustment nut is provided on the adjustment rod between the spring and the pressure arm; the technical problem that consumables cannot be disassembled and occupy a large space is solved.
[0004] The above-mentioned wire feeder is separate and does not have an integrated cooling fan, and cannot effectively dissipate heat for the whole body; in addition, the wire feeding pulling force of the above-mentioned wire feeder is limited, and it cannot pull the consumables well for the large-mass material tray, resulting in unsuccessful printing and unsatisfactory use effect. Utility Model Content
[0005] The purpose of the utility model is to solve the above-mentioned problems and provide a 3D printer wire feeding head device which can smoothly convey consumable wire, has stable overall operation, has large wire feeding pulling force, is also beneficial to overall heat dissipation, and meets the wire feeding requirements of the 3D printer.
[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a 3D printer wire feeder head device, comprising a stepper motor, a wire feeder rear box and a wire feeder front box, the stepper motor is arranged on one side of the wire feeder rear box, a wire feeding mechanism is arranged between the wire feeder rear box and the wire feeder front box, a through hole is arranged above the wire feeder front box, a throat and a heated extrusion head are arranged below, and the consumable wire passes through the wire feeding mechanism and the throat in the through hole and enters the heated extrusion head.
[0007] Preferably, a pressure arm for adjusting the wire feeding force is provided on the outer side of the front box of the wire feeder.
[0008] Preferably, the wire feeding mechanism includes a motor gear, a reduction gear, a main feed wheel and an auxiliary feed wheel, the motor gear is connected to the output shaft of the stepper motor, the motor gear is meshed with the reduction gear above, the main feed wheel and the reduction gear are arranged on the same main shaft, the main feed wheel and the reduction gear are arranged between the front box and the rear box of the wire feeder through bearings at both ends of the main shaft, the auxiliary feed wheel is arranged in the pressure arm, and the consumable wire is transported downward between the main feed wheel and the auxiliary feed wheel.
[0009] Preferably, the circumferences of the main feeding wheel and the auxiliary feeding wheel are provided with corresponding annular depressions, and the consumable wire always contacts the two annular depressions during wire feeding.
[0010] Preferably, the pressure arm is hinged between the rear box and the front box of the wire feeder, a hand bolt is provided in the pressure arm, an assembly hole matching with the hand bolt is provided on one side of the front box of the wire feeder, a spring is provided around the hand bolt on the outside of the pressure arm, and after the hand bolt matches with the assembly hole, under the action of the spring, the main feeding wheel and the auxiliary feeding wheel clamp the consumable wire.
[0011] Preferably, a throat cooling fan is provided below the front box of the wire feeder, and a model cooling fan is provided below the stepper motor, and the model cooling fan is arranged to be inclined outward.
[0012] Preferably, two groups of heat dissipation ducts are provided on the front box of the wire feeder, one group of heat dissipation ducts corresponds to the throat, and the other group of heat dissipation ducts corresponds to the stepper motor.
[0013] The utility model discloses a 3D printer wire feeding head device, comprising a stepper motor, a wire feeder rear box and a wire feeder front box, wherein the stepper motor is arranged at one side of the wire feeder rear box, a wire feeding mechanism is arranged between the wire feeder rear box and the wire feeder front box, a through hole is arranged above the wire feeder front box, a throat and a heated extrusion head are arranged below the wire feeder front box, and consumable wire passes through the wire feeding mechanism and the throat in the through hole and enters the heated extrusion head; compared with the prior art, the 3D printer wire feeding head device has the advantages of being able to smoothly convey consumable wire when in use, and having stable overall operation, large wire feeding pulling force, being conducive to overall heat dissipation, and meeting the beneficial effect of meeting the wire feeding requirements of the 3D printer. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of a 3D printer wire feeding head device of the utility model Figure 1 .
[0015] Figure 2 This is a schematic diagram of the structure of a 3D printer wire feeding head device of the utility model Figure 2 .
[0016] Figure 3 This is a schematic diagram of the internal structure of a 3D printer wire feeding head device of the utility model Figure 1.
[0017] Figure 4 This is a schematic diagram of the internal structure of a 3D printer wire feeding head device of the utility model Figure 2 .
[0018] Figure 5 This is a schematic diagram of the internal structure of a 3D printer wire feeding head device of the utility model Figure 3 .
[0019] Figure 6 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.
[0020] Figure 7 The utility model is a schematic structural diagram of a wire feeder front box in a wire feeder head device of a 3D printer.
[0021] In the figure: 1. stepper motor; 11. motor gear; 12. reduction gear; 13. main feed wheel; 14. auxiliary feed wheel; 2. wire feeder rear box; 3. pressure arm; 4. wire feeder front box; 41. through hole; 42. assembly hole; 43. heat dissipation duct; 5. hand-tightened bolt; 51. spring; 6. throat cooling fan; 7. heating extruder head; 71. consumable wire; 72. throat; 8. model cooling fan. DETAILED DESCRIPTION
[0022] The utility model is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0023] Please refer to Figure 1-2 A 3D printer wire feeding head device comprises a stepper motor 1, a wire feeder rear box 2 and a wire feeder front box 4, wherein the stepper motor 1 is arranged at one side of the wire feeder rear box 2, a wire feeding mechanism is arranged between the wire feeder rear box 2 and the wire feeder front box 4, a through hole 41 is arranged above the wire feeder front box 4, a throat 72 and a heated extrusion head 7 are arranged below, a consumable wire 71 passes through the wire feeding mechanism and the throat 72 in the through hole 41 and enters the heated extrusion head 7, when in use, the stepper motor 1 drives the wire feeding mechanism to operate, after which the consumable wire 71 passes through the wire feeding mechanism and the throat 72 and enters the heated extrusion head 7, the consumable wire is heated by the heated extrusion head 7 and extruded onto the model, thereby realizing wire feeding of the 3D printer head.
[0024] A pressure arm 3 for adjusting the wire feeding force is provided on the outer side of the wire feeder front box 4. In this embodiment, the pressure arm 3 is elastically connected to the wire feeder front box 4 through a hand-tightened bolt.
[0025] Please refer to Figure 3-6The wire feeding mechanism includes a motor gear 11, a reduction gear 12, a main feeding wheel 13 and an auxiliary feeding wheel 14, wherein the circumferences of the main feeding wheel 13 and the auxiliary feeding wheel 14 are provided with meshing teeth and mesh with each other, the motor gear 11 is connected to the output shaft of the stepper motor 1 through a fastener and a top screw, the motor gear 11 meshes with the reduction gear 12 above, the main feeding wheel 13 and the reduction gear 12 are arranged on the same main shaft, the main feeding wheel 13 and the reduction gear 12 are arranged between the wire feeder front box 4 and the wire feeder rear box 2 through bearings at both ends of the main shaft, the auxiliary feeding wheel 14 is arranged in the pressure arm 3, and the consumable wire 71 is transported downward between the main feeding wheel 13 and the auxiliary feeding wheel 14.
[0026] After the stepper motor 1 is running, the motor output wheel 11 drives the reduction gear 12 to rotate. Since the reduction gear 12 is coaxially arranged with the main feed wheel 13, the main feed wheel 13 also rotates accordingly. When the main feed wheel 13 rotates, it drives the auxiliary feed wheel 14 to rotate through the meshing teeth. Therefore, when the main feed wheel 13 rotates, the main feed wheel 13 and the auxiliary feed wheel 14 jointly transport the consumable filament downward.
[0027] In the solution of the utility model, in order to prevent the consumable wire from being offset during transportation, corresponding annular depressions are provided on the circumference of the main feeding wheel 13 and the auxiliary feeding wheel 14. When feeding the wire, the consumable wire 71 always contacts the two annular depressions. In addition, teeth are provided in the annular depressions, which can prevent the consumable wire from slipping in the annular depressions and ensure smooth wire feeding.
[0028] Furthermore, the pressure arm 3 is hinged between the wire feeder rear box 2 and the wire feeder front box 4, and a hand-tightening bolt 5 is provided in the pressure arm 3. One side of the wire feeder front box 4 is provided with an assembly hole 42 that cooperates with the hand-tightening bolt 5, and a spring 51 is provided around the hand-tightening bolt 5 on the outside of the pressure arm 3. After the hand-tightening bolt 5 cooperates with the assembly hole 42, under the action of the spring 51, the main feeding wheel 13 and the auxiliary feeding wheel 14 clamp the consumable wire 71, and can continuously transport the consumable wire 71 downward when rotating, and the consumable wire is printed onto the model through the heated extrusion head 7.
[0029] In this embodiment, since the reduction gear 12 is provided to increase the wire feeding force, the force can be increased to 150N, which can adapt to heavier consumables; and due to the provision of the reduction gear 12, the stepper motor 1 can generate a larger pulling force with a smaller torque, thereby avoiding heating of the stepper motor and facilitating increasing its service life.
[0030] As a preferred solution, a throat cooling fan 6 is provided under the wire feeder front box 4, and a model cooling fan 8 is provided under the stepper motor 1, and the model cooling fan 8 is tilted outward; when in use, the model cooling fan 8 blows toward the printing model to accelerate the heat dissipation and cooling of the model.
[0031] See also Figure 7, wherein two groups of heat dissipation ducts 43 are provided on the wire feeder front box 4, one group of heat dissipation ducts 43 corresponds to the throat 72, and the other group of heat dissipation ducts 43 corresponds to the stepper motor 1. When in use, the throat cooling fan 6 can blow towards the throat 72 and the stepper motor 1; the purpose of blowing towards the throat 72 is to prevent the consumable wire 71 from becoming soft in the throat 72 and unable to be extruded smoothly, and the purpose of blowing towards the stepper motor 1 is to dissipate heat for it, and the use effect is significant.
[0032] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A 3D printer wire feeder head device, comprising a stepper motor, a wire feeder rear box and a wire feeder front box, characterized in that: The stepper motor is arranged on one side of the wire feeder rear box, a wire feeding mechanism is arranged between the wire feeder rear box and the wire feeder front box, a through hole is arranged on the top of the wire feeder front box, a throat and a heated extrusion head are arranged on the bottom, and the consumable wire passes through the wire feeding mechanism and the throat in the through hole and enters the heated extrusion head.
2. The 3D printer wire feeder head device according to claim 1, characterized in that: A pressure arm for adjusting the wire feeding force is provided on the outer side of the front box of the wire feeder.
3. The 3D printer wire feeder head device according to claim 2, characterized in that: The wire feeding mechanism includes a motor gear, a reduction gear, a main feeding wheel and an auxiliary feeding wheel, the motor gear is connected to the output shaft of the stepper motor, the motor gear is meshed with the reduction gear above, the main feeding wheel and the reduction gear are arranged on the same main shaft, the main feeding wheel and the reduction gear are arranged between the front box and the rear box of the wire feeder through bearings at both ends of the main shaft, the auxiliary feeding wheel is arranged in the pressure arm, and the consumable wire is transported downward between the main feeding wheel and the auxiliary feeding wheel.
4. The 3D printer wire feeder head device according to claim 3, characterized in that: The circumferences of the main feeding wheel and the auxiliary feeding wheel are provided with corresponding annular depressions, and the consumable wire always contacts the two annular depressions during wire feeding.
5. The 3D printer wire feeder head device according to claim 3, characterized in that: The pressure arm is hinged between the rear box and the front box of the wire feeder, a hand bolt is provided in the pressure arm, an assembly hole matching with the hand bolt is provided on one side of the front box of the wire feeder, a spring is provided around the hand bolt on the outside of the pressure arm, and after the hand bolt matches with the assembly hole, under the action of the spring, the main feeding wheel and the auxiliary feeding wheel clamp the consumable wire.
6. The 3D printer wire feeder head device according to claim 1, characterized in that: A throat cooling fan is provided below the front box of the wire feeder, and a model cooling fan is provided below the stepper motor, and the model cooling fan is tilted outward.
7. The 3D printer wire feeder head device according to claim 6, characterized in that: The front box of the wire feeder is provided with two groups of heat dissipation air ducts, one group of heat dissipation air ducts corresponds to the throat, and the other group of heat dissipation air ducts corresponds to the stepper motor.