阅读说明：本技术 一种3d打印机耗材进料引导机构 (3D printer consumptive material feeding guiding mechanism ) 是由 宗泽 黄仲佳 周晓宏 罗贤国 张勇 孙文明 赵薇 郑兰斌 吴志华 王心生 杨军 于 2019-12-05 设计创作，主要内容包括：本发明公开了一种3D打印机耗材进料引导机构,包括罩体,所述罩体两侧内部对应转动连接有丝杆,两组所述丝杆上均螺纹连接有螺纹套,两组所述螺纹套分别通过连杆与调节辊两端转动连接,所述罩体外顶部焊接有防护罩,所述防护罩内安装有第一驱动电机,所述罩体两侧分别设置有进线滑轮和出线滑轮,所述出线滑轮一侧设置有两组夹紧辊,所述夹紧辊的一端通过联轴器与第二驱动电机的输出轴连接,本发明可以通过控制第一驱动电机带动丝杆转动,进而带动调节辊上下移动,来实时调节耗材的张紧程度,保证耗材传输稳定性,本发明通过启动气缸带动上方的夹紧辊下移将耗材夹紧,来实现辅助牵引功能,提高了机构的引导能力。(The invention discloses a feeding guide mechanism for consumable materials of a 3D printer, which comprises a cover body, wherein screw rods are correspondingly and rotatably connected inside two sides of the cover body, two groups of screw rods are respectively and rotatably connected with two ends of an adjusting roller through connecting rods, a protective cover is welded at the top outside the cover body, a first driving motor is installed in the protective cover, two sides of the cover body are respectively provided with a wire inlet pulley and a wire outlet pulley, one side of the wire outlet pulley is provided with two groups of clamping rollers, and one end of each clamping roller is connected with an output shaft of a second driving motor through a coupler, the auxiliary traction function is realized, and the guiding capability of the mechanism is improved.)

1. The utility model provides a 3D printer consumptive material feeding guiding mechanism, includes the cover body (1), its characterized in that: the novel lead screw cover is characterized in that lead screws (2) are correspondingly and rotatably connected inside two sides of the cover body (1), two groups of lead screws (2) are respectively and rotatably connected with two ends of an adjusting roller (5) through connecting rods (4), a protective cover (11) is welded at the outer top of the cover body (1), a first driving motor (12) is installed in the protective cover (11), the bottom end of an output shaft of the first driving motor (12) is connected with the top end of each lead screw (2) through a coupler, openings (6) are symmetrically formed in two sides of the cover body (1), guide rollers (7) are symmetrically and rotatably connected in the openings (6), lead-in pulleys (8) and lead-out pulleys (9) are respectively arranged on two sides of the cover body (1), and guide pulleys (10) are respectively arranged between the lead-in pulleys (8), the lead-out pulleys (9) and the cover body (1), two groups of clamping rollers (17) are arranged on one side of the outgoing line pulley (9), one ends of the clamping rollers (17) are connected with an output shaft of a second driving motor (18) through a coupler, the two groups of clamping rollers (17) are in transmission connection through gears (19), and the outer top of a protective cover (11) outside the second driving motor (18) is connected with the bottom end of a piston rod of an air cylinder (20).

2. The 3D printer consumable feeding guide mechanism of claim 1, wherein: the two groups of screw rods (2) are in transmission connection through a transmission belt (13).

3. The 3D printer consumable feeding guide mechanism of claim 1, wherein: the protective cover (11) is provided with a heat dissipation window (14).

4. The 3D printer consumable feeding guide mechanism of claim 3, wherein: the heat dissipation window (14) is embedded with a dust screen (15), and the dust screen (15) is a filtering cotton net.

5. The 3D printer consumable feeding guide mechanism of claim 1, wherein: the first driving motor (12) and the second driving motor (18) are both servo motors.

6. The 3D printer consumable feeding guide mechanism of claim 1, wherein: the lowest point height of the guide pulley (10) is less than the highest point height of the wire inlet pulley (8).

7. The 3D printer consumable feeding guide mechanism of claim 1, wherein: the width of inlet wire pulley (8), leading pulley (10) all is less than the length of guide roll (7), the length of guide roll (7) is less than the length of adjusting roller (5).

8. The 3D printer consumable feeding guide mechanism of claim 1, wherein: and limiting plates (16) are arranged at the two end parts of the adjusting roller (5) and the guide roller (7).

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a consumable feeding guide mechanism of a 3D printer.

Background

A 3D printer, a machine of rapid prototyping technology, is a technology for constructing objects by layer-by-layer printing using bondable materials such as powdered metal or plastic based on digital model files. It has been used to manufacture models in the fields of mold manufacturing, industrial design, etc., and is now increasingly used for direct manufacture of some products. The principle is as follows: data and raw materials are put into a 3D printer, the machine can build products layer by layer according to programs, and the printed products can be used immediately.

Consumables of the 3D printer are basically transmitted in the form of wires in the printer, pass through the guide mechanism, and have one end fixed on the wire take-up roller, because the wires have certain toughness, the tension state is difficult to keep, the transmission is inconvenient, and the existing 3D printer feeding guide mechanism generally only has a basic guide function; meanwhile, the traction force of the wire take-up roller is only used as a driving source, and the wire is easy to break when the end part is stressed too much.

Disclosure of Invention

The invention aims to provide a consumable feeding guide mechanism of a 3D printer, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: A3D printer consumable feeding guide mechanism comprises a cover body, wherein lead screws are correspondingly and rotatably connected inside two sides of the cover body, two groups of lead screws are respectively and rotatably connected with a thread sleeve in a threaded manner, the two groups of thread sleeves are respectively and rotatably connected with two ends of an adjusting roller through connecting rods, a protective cover is welded at the top outside the cover body, a first driving motor is installed in the protective cover, the bottom end of an output shaft of the first driving motor is connected with the top end of each lead screw through a coupler, openings are symmetrically formed in two sides of the cover body, guide rollers are symmetrically and rotatably connected in the openings, an incoming line pulley and an outgoing line pulley are respectively arranged on two sides of the cover body, the guide pulleys are respectively arranged between the incoming line pulley and the cover body, two groups of clamping rollers are arranged on one side of the outgoing line pulley, one, and the two groups of clamping rollers are in transmission connection through gears, and the outer top of the protective cover outside the second driving motor is connected with the bottom end of the piston rod of the air cylinder.

Preferably, the two groups of screw rods are in transmission connection through a transmission belt.

Preferably, the protective cover is provided with a heat dissipation window.

Preferably, a dustproof net is embedded in the heat dissipation window, and the dustproof net is a filtering cotton net.

Preferably, the first driving motor and the second driving motor are both servo motors.

Preferably, the height of the lowest point of the guide pulley is smaller than the height of the highest point of the wire inlet pulley.

Preferably, the width of the inlet wire pulley and the width of the guide pulley are both smaller than the length of the guide roller, and the length of the guide roller is smaller than the length of the adjusting roller.

Preferably, limiting plates are arranged at two end parts of the adjusting roller and the guide roller.

The invention provides a consumable feeding guide mechanism of a 3D printer, which has the beneficial effects that:

1. according to the invention, the first driving motor is controlled to drive the screw rod to rotate and drive the adjusting roller to move up and down, so that the tensioning degree of consumable materials is adjusted in real time, and the consumable material transmission stability is ensured;

2. according to the invention, the cylinder is started to drive the upper clamping roller to move downwards to clamp consumables, so that an auxiliary traction function is realized, and the guiding capability of the mechanism is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional view of the housing of the present invention;

FIG. 3 is a side view of the housing of the present invention;

fig. 4 is a partial side view of the present invention.

In the figure: 1. a cover body; 2. a screw rod; 3. a threaded sleeve; 4. a connecting rod; 5. a regulating roller; 6. an opening; 7. a guide roller; 8. a wire inlet pulley; 9. a wire outlet pulley; 10. a guide pulley; 11. a protective cover; 12. a first drive motor; 13. a drive belt; 14. a heat dissipation window; 15. a dust screen; 16. a limiting plate; 17. a pinch roller; 18. a second drive motor; 19. a gear; 20. and a cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.