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A 3D printer consumable extrusion mechanism with adjustable torque

A technology of 3D printers and consumables, applied in the field of 3D printing, can solve the problem that FDM3D printers cannot change the working torque, etc., and achieve the effect of adjusting wire feeding torque in a wide range, improving surface quality and internal quality

Active Publication Date: 2018-06-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problem that ordinary FDM 3D printers cannot change their working torque by adjusting the structure of the extruder, and proposes a 3D printer consumable extruder with adjustable torque

Method used

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  • A 3D printer consumable extrusion mechanism with adjustable torque
  • A 3D printer consumable extrusion mechanism with adjustable torque
  • A 3D printer consumable extrusion mechanism with adjustable torque

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A 3D printer consumable extruding mechanism with adjustable torque, including a feeding device and a stepping motor 1, the stepping motor 1 adopts a 42 series stepping motor, and the feeding device includes a The third casing 4, the feeding roller 6 and the feeding gear 5 that are relatively arranged in the third casing 4, the stepping motor 1 is drivingly connected with the feeding gear 5, and the stepping motor 1 is connected with the feeding device. There is also a converter for changing the torque of the feeding gear 5 by switching the position of the toggle switch 14 to switch the gear transmission path.

[0029] Specifically, the changer includes a first housing 2 and a second housing 3 fixedly connected to form a cavity, a switchable gear train arranged in the cavity, pushing the switchable gear train to change the transmission The swing mechanism of the path, the switch 14 extends to the outside of the first casing 2 and is connected to the swing mechanism throu...

Embodiment 2

[0037] Such as Figure 7 As mentioned above, the difference between this embodiment and the first embodiment is that the positioning device includes a block plate 21, a pull rod 20, and a switch handle 19 connected to the switch 14, and the block plate 21 is along the length direction A ratchet-shaped block is evenly arranged, and the pull rod 20 is vertically connected to the middle part of the block plate 21, and the two ends of the block plate 21 are provided with return springs to make the switching handle 19 always fit the block plate 21 18.

[0038]In this embodiment, the multi-stage conversion of the gear train can be realized by adjusting the position of the switch, thereby increasing the adjustment range. The action mechanism is as follows: the switching handle 19 is in the middle initial position. When the torque needs to be reduced, the switching handle 19 is moved upward along the block plate 21 to the first block, so that the return spring 18 is compressed, and t...

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PUM

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Abstract

The invention discloses a torque-adjustable 3D printer supplies extruding mechanism. The torque-adjustable 3D printer supplies extruding mechanism comprises a feeding device and a stepping motor, wherein the feeding device comprises a third shell, a feeding roller and a feeding gear; the third shell is provided with a feeding groove and a discharging connector; the feeding roller and the feeding gear are oppositely arranged in the third shell; the stepping motor is in driving connection with the feeding gear; and a changer for changing torque of the feeding gear by shifting the position of a selector switch to switch a gear transmission path is further arranged between the stepping motor and the feeding device. By the mode of changing the torque by switching the gear transmission path, the problems that a motor loses steps and shakes violently when wire feeding torque is over small, and then wire discharging of a heating head is abnormal are solved, and the surface quality and the interior quality of a printed piece are improved.

Description

technical field [0001] The present invention relates to the field of 3D printing, in particular to a 3D printer consumable extruding mechanism with adjustable torque, which changes the extruder torque by switching the gear train to achieve the purpose of adjusting the wire feeding torque in a wide range, thereby solving the problem that ordinary FDM3D printers cannot The problem of changing the working torque of the extruder by adjusting its structure. Background technique [0002] The mechanical structure of the transmission part of the FDM extruders currently on the market, whether it is remote wire feeding or short-distance wire feeding, cannot be adjusted. That is, when the torque of the motor used is determined, the wire feeding torque is determined accordingly. , It is impossible to change its working torque by adjusting the structure of the extruder. When the wire feeding torque is too small, it will cause the motor to lose steps and vibrate violently (specifically, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/321B33Y30/00
CPCB33Y30/00
Inventor 徐开明陈松茂李叶辉吴桐陈铭毛广扬纪禹操彭乔忠
Owner SOUTH CHINA UNIV OF TECH