Feeding mechanism for 3D printer

Abstract

A guide groove is formed in one end of a fixing plate, a limiting plate is arranged at the position, located at the outer end of the guide groove, of the fixing plate, the limiting plate is provided with an internal thread sleeve, a motor is arranged on the lower surface of the fixing plate, an output shaft of the motor penetrates through the fixing plate and is provided with a driving wheel, and a sliding block is arranged in the guide groove in a sliding mode. The upper surface of the flat plate is provided with the driving wheel through the motor, the upper surface of the sliding block is provided with the driven wheel through a wheel shaft, the driven wheel is matched with the driving wheel, the adjusting screw rod is matched with the internal thread sleeve in a threaded mode, and one end of the adjusting screw rod is rotationally connected with the sliding block. The sliding block moves along the sliding groove through the matching of the adjusting screw rod, so that the distance between the driven wheel and the driving wheel can be adjusted according to material strips with different diameters so as to adapt to the material strips with different diameters, the flexibility and the application range are greatly improved, the cost is saved, and meanwhile, the operation is more convenient and quicker.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printer feeding components, in particular to a feeding mechanism for a 3D printer. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a kind of rapid prototyping process equipment, a kind of cumulative manufacturing technology, that is, a kind of machine of rapid prototyping technology. It is based on a digital model file, using special wax materials, powdered metal or plastic and other adhesive materials, and printing layers of adhesive materials to make three-dimensional objects. At present, 3D printers are used to manufacture products. The technology of constructing objects by printing layer by layer. The principle of 3D printer is to put data and raw materials into the 3D printer, and the machine will make the product layer by layer according to the program.

[0003] At present, the materials used in 3D printers are generally in strip shape, which are fed into the nozzle through the traction of the feeding mechanism, melted at high temperature by the nozzle and then extruded to achieve 3D printing. Most feeding mechanisms use the cooperation of driving wheels and driven wheels to achieve feeding. The current driving wheels and driven wheels of the feeding mechanism are generally limited to the fixed plate, which means that after changing the material strips of different sizes, the feeding mechanism needs to be replaced, or the driven wheel or the driving wheel needs to be replaced. The operation is complicated and not convenient enough, and preparing multiple feeding mechanisms, driving wheels and driven wheels also increases the cost. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a feeding mechanism for a 3D printer. A driving wheel is arranged on the upper surface of a flat plate through a motor, and a driven wheel is arranged through a slider. The slider moves along a slide groove through the cooperation of an adjusting screw, so that the distance between the driven wheel and the driving wheel can be adjusted according to material strips of different diameters to adapt to material strips of different diameters. The flexibility and application range are greatly improved, and there is no need to prepare multiple feeding mechanisms for material strips of different diameters or replace the driving wheel or the driven wheel. The cost is saved and the operation is more convenient and quick, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding mechanism for a 3D printer, comprising a fixed plate, a feed end protrusion, a discharge end protrusion, a limit plate, a motor, a driving wheel, a slider, a driven wheel and an adjusting screw, wherein the feed end protrusion and the discharge end protrusion are respectively arranged on both sides of the upper surface of the fixed plate, and a feeding hole is opened in the middle position of the feed end protrusion and the discharge end protrusion, and a discharge guide sleeve is arranged on the outer side of the discharge end protrusion and located at the feeding hole, a guide groove is opened at one end of the fixed plate, a limit plate is arranged at the outer end of the guide groove, an internal threaded sleeve is arranged on the limit plate, a motor is arranged on the lower surface of the fixed plate, an output shaft of the motor passes through the fixed plate and is installed with a driving wheel, a slider is slidably arranged in the guide groove, a driven wheel is arranged on the upper surface of the slider through a wheel shaft, the driven wheel cooperates with the driving wheel, the adjusting screw is threadably cooperated with the internal threaded sleeve, and one end of the adjusting screw is rotatably connected with the slider.

[0006] Preferably, the utility model provides a feeding mechanism for a 3D printer, wherein a circular hole is provided at the outer end of the slider, a latch hole is provided on the lower surface of the slider and located at the circular hole, one end of the adjusting screw that cooperates with the slider has a smooth surface and is provided with an annular groove, a latch is provided in the latch hole, and the end of the latch cooperates with the annular groove of the adjusting screw.

[0007] Preferably, the utility model provides a feeding mechanism for a 3D printer, wherein a knob is provided at the outer end of the adjusting screw.

[0008] Preferably, the utility model provides a feeding mechanism for a 3D printer, wherein saw teeth are evenly arranged on the periphery of the driving wheel.

[0009] Preferably, the utility model provides a feeding mechanism for a 3D printer, wherein a groove is formed on the periphery of the driven wheel.

[0010] Preferably, the utility model provides a feeding mechanism for a 3D printer, wherein four corners of the fixing plate are provided with assembly holes.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] A driving wheel is provided on the upper surface of the flat plate through a motor, and a driven wheel is provided through a slider. The slider moves along the slide groove through the cooperation of the adjusting screw, so that the distance between the driven wheel and the driving wheel can be adjusted according to material strips of different diameters to adapt to material strips of different diameters. The flexibility and application scope are greatly improved. There is no need to prepare multiple feeding mechanisms for material strips of different diameters or replace the driving wheel or the driven wheel, which saves costs and makes the operation more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0015] Figure 3 This is a front structural schematic diagram of the utility model;

[0016] Figure 4 This is a rear view structural diagram of the utility model;

[0017] Figure 5 It is a schematic diagram of the front view structure of the slider;

[0018] Figure 6 It is a schematic diagram of the structure of the slider from a top view;

[0019] Figure 7 Schematic diagram of the adjusting screw structure.

[0020] In the figure: fixed plate 1, feed end protrusion 2, discharge end protrusion 3, limit plate 4, motor 5, driving wheel 6, slider 7, driven wheel 8, feeding hole 9, discharge guide sleeve 10, guide groove 11, internal thread sleeve 12, adjusting screw 13, round hole 14, pin hole 15, annular groove 16, pin 17, knob 18, serration 19, groove 20, assembly hole 21. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0022] It should be noted that, in the description of the present invention, the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] See also Figure 1-7The utility model provides a technical solution: a feeding mechanism for a 3D printer, comprising a fixed plate 1, a feed end protrusion 2, a discharge end protrusion 3, a limit plate 4, a motor 5, a driving wheel 6, a slider 7, a driven wheel 8 and an adjusting screw 13. The two sides of the upper surface of the fixed plate 1 are respectively provided with a feed end protrusion 2 and a discharge end protrusion 3. The four corners of the fixed plate 1 are provided with assembly holes 21, which are used to connect with the mounting frame through the cooperation of bolts. The middle positions of the feed end protrusion 2 and the discharge end protrusion 3 are provided with a feed hole 9, and the outer side of the discharge end protrusion 3 and the discharge guide sleeve 10 are provided at the feed hole 9. A guide groove 11 is provided at one end of the fixed plate 1, and a limit plate 4 is provided at the outer end of the guide groove 11 of the fixed plate 1. The limit plate 4 is provided with an internal threaded sleeve 12. The motor 5 is provided on the lower surface of the fixed plate 1, and the output shaft of the motor 5 passes through the fixed plate 1 and is installed with a driving wheel 6. The outer periphery of the driving wheel 6 is evenly provided with saw teeth 19. The sawtooth 19 can better contact with the material strip and drive the material strip forward at the same time. A slider 7 is slidably arranged in the guide groove 11. A driven wheel 8 is arranged on the upper surface of the slider 7 through the wheel shaft. The driven wheel 8 cooperates with the driving wheel 6. A groove 20 is provided on the periphery of the driven wheel 8 to limit the position of the material strip. The adjusting screw 13 is threadedly matched with the internal threaded sleeve 12. One end of the adjusting screw 13 is rotatably connected with the slider 7. A circular hole 14 is provided at the outer end of the slider 7. A latch hole 15 is provided on the lower surface of the slider 7 and is located at the circular hole 14. One end of the adjusting screw 13 cooperating with the slider 7 has a smooth surface and an annular groove 16 is provided. A latch 17 is provided in the latch hole 15, and the end of the latch 17 cooperates with the annular groove 16 of the adjusting screw 13. Through the connection method of this structure, the adjusting screw 13 is rotated while driving the slider 7 to move along the guide groove 11. At the same time, the slider 7 will not rotate. A knob 18 is provided at the outer end of the adjusting screw 13 to facilitate the rotation of the adjusting screw 13.

[0024] Assembly method and use principle: install the motor 5 on the lower surface of the fixed plate 1, and make the output shaft of the motor 5 pass through the fixed plate 1, and then fasten the driving wheel 6 with the output shaft of the motor 5 by bolts. Then slide the slider 7 into the slide groove of the fixed plate 1, and then match the adjusting screw 13 with the internal threaded sleeve 12 of the limit plate 4, then insert the end of the adjusting screw 13 into the circular hole 14 of the slider 7, and then pass the latch 17 through the latch hole 15 of the slider 7, and make the end of the latch 17 match with the annular groove 16 of the adjusting screw 13 to achieve the rotational connection between the adjusting screw 13 and the slider 7, and at the same time, install the limit plate 4 at the outer end of the slide groove by bolts, and finally fasten the driven wheel 8 to the wheel axle of the slider 7 by bolts to complete the assembly. Before use, the fixed plate 1 can be installed on the hole position of the mounting frame by bolts. When in use, the material strips sequentially pass through the feeding hole 9 of the protrusion 2 at the feeding end, between the driving wheel 6 and the driven wheel 8, the feeding hole 9 of the protrusion 3 at the discharging end and the discharging guide sleeve 10. According to the diameter of the material strips, the adjusting screw 13 is rotated so that the material strips contact the driving wheel 6 and the driven wheel 8 respectively, so as to realize the forward traction of the material strips. The utility model has a reasonable structure. The upper surface of the fixed plate 1 is provided with a driving wheel 6 through the motor 5, and the driven wheel 8 is provided through the slider 7. The slider 7 moves along the slide groove through the cooperation of the adjusting screw 13, so that the distance between the driven wheel 8 and the driving wheel 6 can be adjusted according to the material strips of different diameters to adapt to the material strips of different diameters. The flexibility and application range are greatly improved. There is no need to prepare multiple feeding mechanisms for material strips of different diameters or replace the driving wheel 6 or the driven wheel 8, which saves costs and makes the operation more convenient and quick.

[0025] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0026] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A feeding mechanism for a 3D printer, characterized in that: The invention comprises a fixed plate (1), a feed end protrusion (2), a discharge end protrusion (3), a limit plate (4), a motor (5), a driving wheel (6), a slider (7), a driven wheel (8) and an adjusting screw (13), wherein the feed end protrusion (2) and the discharge end protrusion (3) are respectively arranged on both sides of the upper surface of the fixed plate (1), a feed hole (9) is provided in the middle of the feed end protrusion (2) and the discharge end protrusion (3), a discharge guide sleeve (10) is provided outside the discharge end protrusion (3) and at the discharge hole (9), a guide groove (11) is provided at one end of the fixed plate (1), and the fixed plate (1) is provided with a plurality of guide grooves (12) and a plurality of guide grooves (13) at the bottom of the fixed plate (1). ) A limit plate (4) is arranged at the outer end of the guide groove (11), the limit plate (4) is provided with an internal threaded sleeve (12), a motor (5) is arranged on the lower surface of the fixed plate (1), the output shaft of the motor (5) passes through the fixed plate (1) and is installed with a driving wheel (6), a slider (7) is slidably arranged in the guide groove (11), a driven wheel (8) is arranged on the upper surface of the slider (7) through a wheel axle, the driven wheel (8) cooperates with the driving wheel (6), the adjusting screw (13) is threadedly matched with the internal threaded sleeve (12), and one end of the adjusting screw (13) is rotatably connected to the slider (7).

2. A feeding mechanism for a 3D printer according to claim 1, characterized in that: A circular hole (14) is formed at the outer end of the slider (7), a latch hole (15) is formed on the lower surface of the slider (7) and located at the circular hole (14), one end of the adjusting screw (13) that cooperates with the slider (7) is a smooth surface and is provided with an annular groove (16), a latch (17) is provided in the latch hole (15), and the end of the latch (17) cooperates with the annular groove (16) of the adjusting screw (13).

3. The feeding mechanism for a 3D printer according to claim 1, characterized in that: The outer end of the adjusting screw rod (13) is provided with a knob (18).

4. The feeding mechanism for a 3D printer according to claim 1, characterized in that: The outer periphery of the driving wheel (6) is evenly provided with saw teeth (19).

5. The feeding mechanism for a 3D printer according to claim 1, characterized in that: A groove (20) is formed on the periphery of the driven wheel (8).

6. The feeding mechanism for a 3D printer according to claim 1, characterized in that: Four corners of the fixing plate (1) are provided with assembly holes (21).

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