CN111267341A - A high-precision speed-increasing 3D printer and printing method thereof - Google Patents

Abstract

The invention discloses a high-precision speed-increasing 3D printer and a printing method thereof, wherein the speed of 3D printing operation is increased through the arrangement of a working platform, a base and a portal frame, and the whole structure is simple and the size is small; by adding 1 large-caliber spray head on the basis of a single spray head, the small-caliber spray head continuously prints the surface characteristics of the 2-layer model by 2 times of surface characteristic printing strokes according to the large surface characteristics, and the large-caliber spray head is switched to print the internal filling and the external support of the 2-layer three-dimensional model by 1 time of printing strokes; the surface characteristic and the internal filling of the model adopt the small-caliber spray head to continuously print 2 layers through 2 times of printing strokes, the large-caliber spray head is switched to print 2 layers of external supports through 1 time of printing strokes, and the two spray heads are switched alternately, so that the problem of low 3D printing and manufacturing speed is solved, the printing time of the three-dimensional model is shortened, the larger the surface characteristic of the model is, the more obvious the time shortening effect is, and the three-dimensional model is particularly suitable for printing the model with large surface characteristic.

Description

A high-precision speed-increasing 3D printer and printing method thereof

technical field

The invention relates to the technical field of 3D printers, in particular to a high-precision speed-increasing 3D printer and a printing method thereof.

Background technique

As a kind of rapid prototyping technology, 3D printing technology is also known as cumulative manufacturing technology, which is an advanced manufacturing technology. The technology is based on digitized model files, using bondable materials such as special waxes, powdered metals or plastics to construct objects layer by layer. It is regarded as the symbol of the third industrial revolution and has broad application prospects.

At present, the printing speed of light curing printing technology is the fastest in 3D printing technology. Although fused deposition technology is one of the fastest growing technologies in 3D printing technology, traditional fused deposition 3D printers have great limitations, slow printing speed and long printing time. FDM (Fused Deposition Modeling, Fused Deposition Modeling) Forming) technology to overcome difficulties. At present, with the development of society, the manufacturing industry desperately needs fused deposition 3D printers that can achieve high-precision and fast printing. Therefore, high-precision speed-up 3D printers are bound to be widely demanded.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a high-precision speed-increasing 3D printer and a printing method thereof, so as to solve the problems of slow printing speed and long printing time of traditional fused deposition type 3D printers.

For achieving the above object, the present invention provides the following scheme:

A high-precision speed-increasing 3D printer comprising: a base, a gantry, a working platform and a printing device;

The base includes: a first Y-axis support rod, a second Y-axis support rod, a first X-axis support rod, and a second X-axis support rod; the first Y-axis support rod and the second Y-axis support rod are parallel to each other, and are vertically connected to the first X-axis support rod and the second X-axis support rod that are parallel to each other;

The gantry includes: a first Z-axis guide rod, a second Z-axis guide rod, and an X-axis connecting rod; the lower ends of the first Z-axis guide rod and the second Z-axis guide rod are respectively fixed on the base ; The first Z-axis guide rod and the upper end of the second Z-axis guide rod are connected by the X-axis connecting rod;

The working platform includes: an X-axis motion platform, a Y-axis motion platform and a Z-axis motion platform; the Y-axis motion platform is slidably mounted on the base; the X-axis motion platform includes: an X-axis guide rod; the The X-axis guide rod is slidably connected between the first Z-axis guide rod and the second Z-axis guide rod; the X-axis guide rod is provided with the printing device for manufacturing the entity; the printing device includes : The first extruder motor, the second extruder motor, the first extruder, the second extruder, and the first extruder and the second extruder of the printer used to manufacture the entity; the printer The first nozzle adopts a small-diameter nozzle; the second nozzle of the printer adopts a large-diameter nozzle.

Optionally, the diameter of the nozzle of the second nozzle of the printer is twice the diameter of the nozzle of the first nozzle of the printer.

Optionally, the Z-axis motion platform includes: a first Z-axis pulley, a second Z-axis pulley, a first Z-axis screw, a second Z-axis screw, a first Z-axis motor, and a second Z-axis motor; The first Z-axis pulley and the second Z-axis pulley are respectively sleeved on the first Z-axis guide rod and the second Z-axis guide rod; one end of the X-axis guide rod passes through the first Z-axis The pulley is slidably connected with the first Z-axis guide rod, and the other end of the X-axis guide rod is slidably connected with the second Z-axis guide rod through the second Z-axis pulley; the first Z-axis screw rod and The second Z-axis screw rods are respectively arranged on the first Z-axis motor and the second Z-axis motor, and are respectively parallel to the first Z-axis guide rod and the second Z-axis guide rod; The first Z-axis pulley is arranged through the first Z-axis screw rod, and the first Z-axis motor drives the first Z-axis pulley through the first Z-axis screw rod; the second Z-axis pulley passes through The second Z-axis screw is provided, and the second Z-axis motor drives the second Z-axis pulley through the second Z-axis screw; the first Z-axis motor and the second Z-axis motor The X-axis guide rod is driven to slide up and down in the Z-axis direction along the first Z-axis guide rod and the second Z-axis guide rod by the first Z-axis pulley and the second Z-axis pulley respectively.

Optionally, the X-axis motion platform further includes: a first spray head pulley module, a second spray head pulley module, a first X-axis motor, and a second X-axis motor; the first spray head pulley module and the second spray head The pulley modules are all sleeved on the X-axis guide rod; the first nozzle pulley module is connected with the first nozzle of the printer, and the second nozzle pulley module is connected with the second nozzle of the printer; the The first X-axis motor is arranged on the first Z-axis pulley, and the first X-axis motor drives the first nozzle pulley module through the synchronous belt to pull the first nozzle of the printer along the X-axis guide rod in the X axis. The axial direction slides left and right; the second X-axis motor is arranged on the second Z-axis pulley, and the second X-axis motor drives the second nozzle pulley module through the synchronous belt to pull the second nozzle of the printer along the The X-axis guide rod slides left and right in the X-axis direction.

Optionally, the first X-axis motor and the second X-axis motor are staggered by a certain distance in the Y-axis and Z-axis directions

Optionally, the first Z-axis pulley is provided with the first extruder motor; the first extruder is arranged above the first extruder motor, and communicates with the printer through a feeding pipe The first nozzle is connected; the first extruder motor drives the first extruder, and drives the wire to be transported to the first nozzle of the printer through the feeding pipe for printing;

The second Z-axis pulley is provided with the second extruder motor; the second extruder is arranged above the second extruder motor, and is connected to the second nozzle of the printer through a feeding pipe ; The second extruder motor drives the second extruder, and drives the wire material to be transported to the second nozzle of the printer through the feeding pipe for printing.

Optionally, the Y-axis motion platform includes: a Y-axis guide rod, a Y-axis motor, a heat bed fixing plate and a heat bed; the Y-axis guide rod is fixed in the middle of the base, and is respectively connected with the first X-axis. The support rod is perpendicular to the second X-axis support rod; the Y-axis guide rod is slidably connected with the hot bed fixing plate; the bottom of the hot bed fixing plate is provided with a plurality of guide wheels; The wheel is sleeved on the Y-axis guide rod; the Y-axis motor is set on the Y-axis guide rod; The shaft guide rod slides back and forth in the Y-axis direction.

A printing method for a high-precision speed-increasing 3D printer, the printing method is based on the high-precision speed-increasing 3D printer; the printing method comprises:

When the surface features are large, the first nozzle of the printer is used to continuously print the surface features of the 2-layer 3D model through 2 surface feature printing strokes, and the second nozzle of the printer is switched to print the internal filling and external support of the 2-layer 3D model through one printing stroke;

When the surface features are small, the first nozzle of the printer is used to continuously print the surface features and internal filling of the 2-layer 3D model through 2 surface feature printing strokes, and the second nozzle of the printer is switched to print the 2-layer 3D model through 1 printing stroke. of external support.

Optionally, the diameter of the nozzle of the second nozzle of the printer is twice the diameter of the nozzle of the first nozzle of the printer.

According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

The invention provides a high-precision speed-increasing 3D printer and a printing method thereof. The speed-up of the 3D printing operation is realized through the setting of the working platform, the base and the gantry, and the overall structure is simple and the volume is small. The high-precision speed-increasing 3D printer of the present invention adds a large-diameter nozzle on the basis of a single nozzle. When the surface features are large, the small-diameter nozzle continuously prints the surface features of the two-layer model through two surface feature printing strokes, and the large-diameter nozzle is switched. The internal filling and external support of the 2-layer 3D model are printed in one printing stroke; when the surface features are small, the surface features and internal filling of the model are all printed with small-diameter nozzles in two printing strokes. One printing stroke prints 2 layers of external support, and the two nozzles switch alternately, which improves the problem of slow 3D printing manufacturing speed and shortens the printing time of 3D models. Print models with large surface features.

In addition, the first Z-axis motor and the second Z-axis motor of the high-precision speed-increasing 3D printer of the present invention drive the X-axis guide rod along the first Z-axis guide rod and the second Z-axis pulley through the first Z-axis pulley and the second Z-axis pulley. The shaft guide rod slides up and down, and 2 screw rods are used for transmission, and the positioning is accurate, which effectively improves the printing accuracy.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

1 is a front view of a high-precision speed-increasing 3D printer provided by the present invention;

2 is a schematic diagram of a first angle of the high-precision speed-increasing 3D printer provided by the present invention;

3 is a schematic diagram of a second angle of the high-precision speed-increasing 3D printer provided by the present invention;

4 is a top view of the high-precision speed-increasing 3D printer provided by the present invention;

The numbers in the figure are: 1. The first Z-axis guide rod, 2. The second Z-axis guide rod, 3. The first Z-axis pulley, 4. The second Z-axis pulley, 5. The first nozzle of the printer, 6. The printer The second nozzle, 7. The first nozzle pulley module, 8. The second nozzle pulley module, 9. The X-axis guide rod, 10. The X-axis connecting rod, 11. The first Z-axis screw, 12. The second Z-axis wire Rod, 13. First X-axis motor, 14. Second X-axis motor, 15. First Z-axis motor, 16. Second Z-axis motor, 17. First Y-axis support rod, 18. Second Y-axis support Rod, 19. Hot bed fixing plate, 20. Y-axis guide rod, 21. First X-axis support rod, 22. Second X-axis support rod, 23. Hot bed, 24. Second extruder motor, 25. 1st extruder motor, 26. 2nd extruder, 27. 1st extruder, 28. Y-axis motor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a high-precision speed-increasing 3D printer and a printing method thereof, so as to solve the problems of slow printing speed and long printing time of traditional fused deposition type 3D printers.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the front view of the high-precision speed-increasing 3D printer provided by the present invention; Fig. 2 is the first angle schematic diagram of the high-precision speed-increasing 3D printer provided by the present invention; Fig. 3 is the high-precision speed-increasing 3D printer provided by the present invention A schematic diagram of a second angle; FIG. 4 is a top view of the high-precision speed-increasing 3D printer provided by the present invention. As shown in Figures 1-4, the present invention provides a high-precision speed-increasing 3D printer, which is especially suitable for printing models with large surface features. The high-precision speed-increasing 3D printer includes: a base, a gantry, a working platform and a printing device.

The base includes: a first Y-axis support rod 17 , a second Y-axis support rod 18 , a first X-axis support rod 21 , and a second X-axis support rod 22 . The first Y-axis support rod 17 and the second Y-axis support rod 18 are parallel to each other, and are vertically connected with the parallel first X-axis support rod 21 and the second X-axis support rod 22 to form a stable base .

Specifically, the first Y-axis support rod 17 , the first X-axis support rod 21 , the second Y-axis support rod 18 and the second X-axis support rod 22 are connected end to end in sequence to enclose the rectangular base.

The gantry includes: a first Z-axis guide rod 1 , a second Z-axis guide rod 2 , and an X-axis connecting rod 10 . The lower ends of the first Z-axis guide rod 1 and the second Z-axis guide rod 2 are respectively fixed on the base, and the upper ends of the first Z-axis guide rod 1 and the second Z-axis guide rod 2 are connected through the X-axis Rod 10 is connected.

Specifically, the X-axis connecting rod 10 is parallel to the plane where the base is located. The upper end of the first Z-axis guide rod 1 is connected to one end of the X-axis connecting rod 10, and the lower end of the first Z-axis guide rod 1 is fixed in the middle of the first Y-axis support rod 17; the second The upper end of the Z-axis guide rod 2 is connected to the other end of the X-axis connecting rod 10 , and the lower end of the second Z-axis guide rod 2 is fixed in the middle of the second Y-axis support rod 18 .

The working platform includes: an X-axis motion platform, a Y-axis motion platform and a Z-axis motion platform. The X-axis motion platform includes: an X-axis guide rod 9 , a first nozzle pulley module 7 , a second nozzle pulley module 8 , a first X-axis motor 13 , and a second X-axis motor 14 . The Y-axis motion platform is slidably mounted on the base; the Y-axis motion platform includes: a Y-axis guide rod 20 , a Y-axis motor 28 , a hot bed fixing plate 19 and a hot bed 23 . The Z-axis motion platform includes: a first Z-axis pulley 3, a second Z-axis pulley 4, a first Z-axis screw 11, a second Z-axis screw 12, a first Z-axis motor 15 and a second Z-axis motor 16.

In the present invention, the extension direction of the X-axis guide rod 9 is defined as the X-axis direction, the extension direction of the Y-axis guide rod 20 is defined as the Y-axis direction, and the extension direction of the first Z-axis guide rod 1 is defined as The direction is defined as the Z-axis direction.

The printing device includes: a first extruder motor 25, a second extruder motor 24, a first extruder 27, a second extruder 26 for conveying consumables, and a first nozzle of the printer for manufacturing entities 5 and the second nozzle of the printer 6. The first nozzle 5 of the printer adopts a small-diameter nozzle; the second nozzle 6 of the printer adopts a large-diameter nozzle.

As shown in Figures 1-4, in the present invention, the X-axis guide rod 9 is slidably connected between the first Z-axis guide rod 1 and the second Z-axis guide rod 2, and the X-axis guide rod 9 is connected to the The X-axis connecting rods 10 are kept parallel. The Y-axis guide rod 20 is fixed in the middle of the base and is perpendicular to the first X-axis support rod 21 and the second X-axis support rod 22 respectively. Specifically, one end of the Y-axis guide rod 20 is connected to the middle of the first X-axis support rod 21 , and the other end of the Y-axis guide rod 20 is connected to the middle of the second X-axis support rod 22 Location. And the Y-axis guide rod 20 is parallel to the first Y-axis support rod 17 . A hot bed fixing plate 19 is slidably connected to the Y-axis guide rod 20 , and a plurality of guide wheels are arranged at the bottom of the hot-bed fixing plate 19 ; the plurality of guide wheels are sleeved on the Y-axis guide rod 20 , the hot bed fixing plate 19 drives the hot bed 23 to move back and forth on the Y-axis guide rod 20 .

The X-axis guide rod 9 is provided with the printing device for manufacturing the entity; the printing device includes a first extruder motor 25, a second extruder motor 24, and a first extruder for conveying consumables 27. The second extruder 26 and the first nozzle 5 and the second nozzle 6 of the printer for manufacturing the entity.

One end of the X-axis guide rod 9 is slidably connected to the first Z-axis guide rod 1 through the first Z-axis pulley 3 , and the other end of the X-axis guide rod 9 is connected to the second Z-axis guide rod through the second Z-axis pulley 4 . The shaft guide rod 2 is slidably connected. The first Z-axis pulley 3 is disposed through the first Z-axis screw rod 11 , and the first Z-axis motor 15 drives the first Z-axis pulley 3 through the first Z-axis screw rod 11 . The second Z-axis pulley 4 is disposed through the second Z-axis screw 12 , and the second Z-axis motor 16 drives the second Z-axis pulley 4 through the second Z-axis screw 12 . The first Z-axis motor 15 and the second Z-axis motor 16 drive the X-axis guide rod 9 along the first Z-axis guide rod 1 and the second Z-axis guide rod 1 through the first Z-axis pulley 3 and the second Z-axis pulley 4 respectively. The shaft guide 2 slides up and down.

The first Z-axis screw 11 and the second Z-axis screw 12 are respectively arranged on the first Z-axis motor 15 and the second Z-axis motor 16, and are respectively parallel to the first Z-axis guide rod 1 and the second Z-axis guide rod 2. The first Z-axis pulley 3 and the second Z-axis pulley 4 are respectively sleeved on the first Z-axis guide rod 1 and the second Z-axis guide rod 2 . Specifically, the first Z-axis motor 15 is arranged at the bottom of the first Z-axis screw 11 , and the second Z-axis motor 16 is arranged at the bottom of the second Z-axis screw 12 .

The present invention adopts two screw rods (the first Z-axis screw rod 11 and the second Z-axis screw rod 12 ) for transmission, with accurate positioning and high printing precision.

The X-axis guide rod 9 is sleeved with a first nozzle pulley module 7 and a second nozzle pulley module 8, the first nozzle pulley module 7 is connected with the printer's first nozzle 5, and the second nozzle pulley module 8 A second nozzle 6 of the printer is connected to it.

The first X-axis motor 13 is arranged on the first Z-axis pulley 3, and the first X-axis motor 13 drives the first nozzle pulley module 7 through a synchronous belt to pull the printer's first nozzle 5 along the X axis. The shaft guide 9 slides left and right.

The first Z-axis pulley 3 is provided with a first extruder motor 25, and the first extruder 27 is arranged above the first extruder motor 25, and is connected to the first nozzle 5 of the printer through a feeding pipe, The first extruder motor 25 drives the first extruder 27, and drives the wire to be transported to the first nozzle 5 of the printer through the feeding pipe. When the surface features are large, the first nozzle 5 of the printer continuously prints the surface features of the 2-layer model through 2 surface feature printing strokes; when the surface features are small, the first nozzle 5 of the printer continuously prints the surface of the 2-layer model through 2 printing strokes. Features, internal fill. In order to ensure high precision, the first nozzle 5 of the printer is a small diameter nozzle, and the surface features of the three-dimensional model are printed by the first nozzle 5 of the printer to ensure the high precision of the surface printing of the three-dimensional model.

The second X-axis motor 14 is arranged on the second Z-axis pulley 4, and the second X-axis motor 14 drives the second nozzle pulley module 8 through a synchronous belt to pull the printer's second nozzle 6 along the X axis. The shaft guide 9 slides left and right.

The second Z-axis pulley 4 is provided with a second extruder motor 24, the second extruder 26 is arranged above the second extruder motor 24, and is connected to the second nozzle 6 of the printer through a feeding pipe, The second extruder motor 24 drives the second extruder 26 , and drives the wire to be transported to the second nozzle 6 of the printer through a feeding pipe. For large surface features, the second nozzle 6 of the printer prints the internal filling and external support of the 2-layer 3D model in one printing stroke; for small surface features, the second nozzle 6 of the printer prints the 2-layer 3D model in one printing stroke. External support. In order to improve the printing speed and shorten the printing time, the second nozzle 6 of the printer is a large-diameter nozzle, and its nozzle diameter is set to an integer multiple of the diameter of the small-diameter nozzle 5, which is set to 2 times here for printing the internal filling of the three-dimensional model. Materials and external support materials to improve the printing speed of 3D models and shorten the model printing time. The larger the model, the more obvious the time reduction effect.

In the present invention, one large-diameter nozzle is added on the basis of a single nozzle, and one more feeding device (including extruder motor, extruder, nozzle pulley module, and X-axis motor) is added to make the high-precision speed-up 3D printer. Two feeding devices are applied at one time, and the two feeding devices correspond to a small-diameter nozzle and a large-diameter nozzle respectively. The two feeding devices alternately switch to work, which solves the problem of slow 3D printing manufacturing speed and shortens the 3D model printing time. The larger the value, the more obvious the time shortening effect.

In practical applications, the first X-axis motor 13 and the second X-axis motor 14 are staggered by a certain distance in the horizontal (Y-axis) direction and the vertical (Z-axis) direction, which facilitates the setting and transmission of the synchronous belt. The Y-axis motor 28 is arranged on the Y-axis guide rod 20 , and the Y-axis motor 28 drives the hot bed fixing plate 19 through a synchronous belt to drive the hot bed 23 to slide back and forth along the Y-axis guide rod 20 . .

To sum up, the present invention provides a high-precision speed-up 3D printer, which is especially suitable for printing models with large surface features. The 3D printing operation with high-precision speed-up is realized through the setting of the working platform, the base and the gantry. Simple and small in size; the first Z-axis motor and the second Z-axis motor drive the X-axis guide rod along the first Z-axis guide rod and the second Z-axis guide rod through the first Z-axis pulley and the second Z-axis pulley. The rod slides up and down, and 2 screw rods are used for transmission, with precise positioning and high printing accuracy; one large-diameter nozzle is added on the basis of a single nozzle, and one more feeding device is added. Feeding device, the two feeding devices correspond to a small-diameter nozzle and a large-diameter nozzle respectively; when the surface features are large, the small-diameter nozzle continuously prints the surface features of the 2-layer model through two surface feature printing strokes, and switches the large-diameter nozzle (larger nozzle). The diameter of the caliber nozzle is set to an integer multiple of the diameter of the small caliber nozzle, which is set to 2 times here.) The internal filling and external support of the 2-layer 3D model are printed in one printing stroke; every small surface feature, the surface features and internal filling of the model The small-diameter nozzles are used to print 2 layers continuously through 2 printing strokes, and the large-diameter nozzles are switched to print 2 layers of external support through 1 printing stroke. Printing time, the larger the surface features of the model, the more obvious the effect of shortening the time, especially suitable for printing models with large surface features.

The present invention also provides a printing method for a high-precision speed-increasing 3D printer. The high-precision speed-increasing 3D printer includes: a base, a gantry, a working platform and a printing device; the base includes: a first Y-axis support rod, a second Two Y-axis support rods, a first X-axis support rod, and a second X-axis support rod; the first Y-axis support rod and the second Y-axis support rod are parallel to each other, and are parallel to the first Y-axis support rod and the second Y-axis support rod. An X-axis support rod is vertically connected to the second X-axis support rod; the gantry includes: a first Z-axis guide rod, a second Z-axis guide rod, and an X-axis connecting rod; the first Z-axis guide rod and the lower end of the second Z-axis guide rod are respectively fixed on the base; the first Z-axis guide rod and the upper end of the second Z-axis guide rod are connected by the X-axis connecting rod; the working platform includes : X-axis motion platform, Y-axis motion platform and Z-axis motion platform; the Y-axis motion platform is slidably mounted on the base; the X-axis motion platform includes: an X-axis guide rod; the X-axis guide rod slides is connected between the first Z-axis guide rod and the second Z-axis guide rod; the X-axis guide rod is provided with the printing device for manufacturing the entity; the printing device includes: for conveying consumables The first extruder motor, the second extruder motor, the first extruder, the second extruder, and the first nozzle of the printer and the second nozzle of the printer for manufacturing the entity; the first nozzle of the printer adopts a small A diameter nozzle; the second nozzle of the printer adopts a large-diameter nozzle.

Wherein, the diameter of the nozzle of the second nozzle of the printer is twice the diameter of the nozzle of the first nozzle of the printer.

The Z-axis motion platform includes: a first Z-axis pulley, a second Z-axis pulley, a first Z-axis screw, a second Z-axis screw, a first Z-axis motor, and a second Z-axis motor; the first The Z-axis pulley and the second Z-axis pulley are respectively sleeved on the first Z-axis guide rod and the second Z-axis guide rod; one end of the X-axis guide rod is connected to the first Z-axis pulley through the first Z-axis pulley. The first Z-axis guide rod is slidably connected, and the other end of the X-axis guide rod is slidably connected to the second Z-axis guide rod through the second Z-axis pulley; the first Z-axis screw rod and the The second Z-axis screw rods are respectively arranged on the first Z-axis motor and the second Z-axis motor, and are respectively parallel to the first Z-axis guide rod and the second Z-axis guide rod; the The first Z-axis pulley is arranged through the first Z-axis screw rod, and the first Z-axis motor drives the first Z-axis pulley through the first Z-axis screw rod; the second Z-axis pulley is arranged through the first Z-axis pulley. the second Z-axis screw, the second Z-axis motor drives the second Z-axis pulley through the second Z-axis screw; the first Z-axis motor and the second Z-axis motor pass through the The first Z-axis pulley and the second Z-axis pulley drive the X-axis guide rod to slide up and down in the Z-axis direction along the first Z-axis guide rod and the second Z-axis guide rod.

The X-axis motion platform further includes: a first nozzle pulley module, a second nozzle pulley module, a first X-axis motor, and a second X-axis motor; the first nozzle pulley module and the second nozzle pulley module are sleeved on the X-axis guide rod; the first nozzle pulley module is connected with the first nozzle of the printer, and the second nozzle pulley module is connected with the second nozzle of the printer; the first nozzle The X-axis motor is arranged on the first Z-axis pulley, and the first X-axis motor drives the first nozzle pulley module through a synchronous belt to pull the first nozzle of the printer along the X-axis guide rod in the X-axis direction Slide left and right; the second X-axis motor is arranged on the second Z-axis pulley, and the second X-axis motor drives the second nozzle pulley module through the synchronous belt to pull the second nozzle of the printer along the X axis The shaft guide slides left and right in the X-axis direction.

Wherein, the first X-axis motor and the second X-axis motor are staggered by a certain distance in the Y-axis and Z-axis directions

Wherein, the first extruder motor is arranged on the first Z-axis pulley; the first extruder is arranged above the first extruder motor, and the first extruder is connected to the printer through a feeding pipe. The nozzles are connected; the first extruder motor drives the first extruder, and drives the wire to be transported to the first nozzle of the printer through the feeding pipe for printing;

The second Z-axis pulley is provided with the second extruder motor; the second extruder is arranged above the second extruder motor, and is connected to the second nozzle of the printer through a feeding pipe ; The second extruder motor drives the second extruder, and drives the wire material to be transported to the second nozzle of the printer through the feeding pipe for printing.

Wherein, the Y-axis motion platform includes: a Y-axis guide rod, a Y-axis motor, a heat bed fixing plate and a heat bed; the Y-axis guide rod is fixed in the middle of the base, and is respectively connected with the first X-axis support rod vertical to the second X-axis support rod; the hot-bed fixing plate is slidably connected to the Y-axis guide rod; the bottom of the hot-bed fixing plate is provided with a plurality of guide wheels; the plurality of guide wheel sleeves The Y-axis motor is arranged on the Y-axis guide rod; the Y-axis motor is arranged on the Y-axis guide rod; The rod slides back and forth in the Y-axis direction.

The printing method of the high-precision speed-increasing 3D printer includes:

When the surface features are large, the first nozzle of the printer is used to continuously print the surface features of the 2-layer 3D model through 2 surface feature printing strokes, and the second nozzle of the printer is switched to print the internal filling and external support of the 2-layer 3D model through one printing stroke;

When the surface features are small, the first nozzle of the printer is used to continuously print the surface features and internal filling of the 2-layer 3D model through 2 surface feature printing strokes, and the second nozzle of the printer is switched to print the 2-layer 3D model through 1 printing stroke. of external support.

It can be seen that the high-precision speed-up 3D printer and the printing method thereof provided by the present invention realize the high-precision speed-up 3D printing operation through the setting of the working platform, the base, and the gantry, and the structure is simple and the volume is small; the The first Z-axis motor and the second Z-axis motor drive the X-axis guide rod to slide up and down along the first Z-axis guide rod and the second Z-axis guide rod through the first Z-axis pulley and the second Z-axis pulley. Two The screw is used for transmission, with accurate positioning and high printing accuracy; the present invention adds one large-diameter nozzle and one more feeding device on the basis of a single nozzle, and the high-precision speed-up 3D printer uses two feeding devices at one time, two Each feeding device corresponds to a small-diameter nozzle and a large-diameter nozzle; for large surface features, the small-diameter nozzle continuously prints the surface features of the two-layer model through two surface feature printing strokes, and switches the large-diameter nozzle (large-diameter nozzle diameter setting It is an integer multiple of the diameter of the small-diameter nozzle, which is set to 2 times here.) The internal filling and external support of the 2-layer 3D model are printed in one printing stroke; when the surface features are small, the surface features and internal filling of the model are all small-diameter. The nozzle prints 2 layers continuously through 2 printing strokes, and the large-diameter nozzle is switched to print 2 layers of external support through 1 printing stroke. The two feeding devices alternately switch to work, which solves the problem of slow 3D printing manufacturing speed and shortens 3D model printing time. , the larger the surface features of the model, the more obvious the effect of time shortening, which is especially suitable for printing models with large surface features.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

In this paper, specific examples are used to illustrate the principles and implementations of the present invention. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present invention; meanwhile, for those skilled in the art, according to the present invention There will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (9)

1. a high-precision speed-increasing 3D printer, is characterized in that, described high-precision speed-increasing 3D printer comprises: base, gantry, working platform and printing device; The base includes: a first Y-axis support rod, a second Y-axis support rod, a first X-axis support rod, and a second X-axis support rod; the first Y-axis support rod and the second Y-axis support rod are parallel to each other, and are vertically connected to the first X-axis support rod and the second X-axis support rod that are parallel to each other; The gantry includes: a first Z-axis guide rod, a second Z-axis guide rod, and an X-axis connecting rod; the lower ends of the first Z-axis guide rod and the second Z-axis guide rod are respectively fixed on the base ; The first Z-axis guide rod and the upper end of the second Z-axis guide rod are connected by the X-axis connecting rod; The working platform includes: an X-axis motion platform, a Y-axis motion platform and a Z-axis motion platform; the Y-axis motion platform is slidably mounted on the base; the X-axis motion platform includes: an X-axis guide rod; the The X-axis guide rod is slidably connected between the first Z-axis guide rod and the second Z-axis guide rod; the X-axis guide rod is provided with the printing device for manufacturing the entity; the printing device includes : The first extruder motor, the second extruder motor, the first extruder, the second extruder, and the first extruder and the second extruder of the printer used to manufacture the entity; the printer The first nozzle adopts a small-diameter nozzle; the second nozzle of the printer adopts a large-diameter nozzle. 2 . The high-precision speed-increasing 3D printer according to claim 1 , wherein the diameter of the nozzle of the second nozzle of the printer is twice the diameter of the nozzle of the first nozzle of the printer. 3 . 3. The high-precision speed-increasing 3D printer according to claim 1, wherein the Z-axis motion platform comprises: a first Z-axis pulley, a second Z-axis pulley, a first Z-axis screw, a second Z-axis pulley A shaft screw, a first Z-axis motor and a second Z-axis motor; the first Z-axis pulley and the second Z-axis pulley are respectively sleeved on the first Z-axis guide rod and the second Z-axis guide rod One end of the X-axis guide rod is slidably connected to the first Z-axis guide rod through the first Z-axis pulley, and the other end of the X-axis guide rod is connected to the second Z-axis pulley through the second Z-axis pulley. The Z-axis guide rod is slidably connected; the first Z-axis screw rod and the second Z-axis screw rod are respectively disposed on the first Z-axis motor and the second Z-axis motor, and are respectively parallel to the The first Z-axis guide rod and the second Z-axis guide rod; the first Z-axis screw rod is arranged through the first Z-axis pulley, and the first Z-axis motor is driven by the first Z-axis screw rod the first Z-axis pulley; the second Z-axis pulley runs through the second Z-axis screw, and the second Z-axis motor drives the second Z-axis pulley through the second Z-axis screw ; The first Z-axis motor and the second Z-axis motor drive the X-axis guide rod along the first Z-axis guide rod and the second Z-axis pulley respectively through the first Z-axis pulley and the second Z-axis pulley The second Z-axis guide rod slides up and down in the Z-axis direction. 4. The high-precision speed-increasing 3D printer according to claim 3, wherein the X-axis motion platform further comprises: a first nozzle pulley module, a second nozzle pulley module, a first X-axis motor, a second X-axis motor shaft motor; the first nozzle pulley module and the second nozzle pulley module are sleeved on the X-axis guide rod; the first nozzle pulley module is connected with the first nozzle of the printer, and the first nozzle pulley module is connected to the first nozzle of the printer. The second nozzle pulley module of the printer is connected with the second nozzle of the printer; the first X-axis motor is arranged on the first Z-axis pulley, and the first X-axis motor drives the first nozzle pulley module through a synchronous belt The first nozzle of the printer is driven to slide left and right along the X-axis guide rod in the X-axis direction; the second X-axis motor is arranged on the second Z-axis pulley, and the second X-axis motor is driven by a synchronous belt The second nozzle pulley module drives the second nozzle of the printer to slide left and right in the X-axis direction along the X-axis guide rod. 5 . The high-precision speed-increasing 3D printer according to claim 3 , wherein the first X-axis motor and the second X-axis motor are staggered by a certain distance in the Y-axis and Z-axis directions. 6 . 6 . The high-precision speed-increasing 3D printer according to claim 3 , wherein the first extruder motor is arranged on the first Z-axis pulley; the first extruder is arranged on the Above the first extruder motor, it is connected to the first nozzle of the printer through a feeding pipe; the first extruder motor drives the first extruder, and drives the wire to be transported to the first nozzle of the printer through the feeding pipe. The printing work is carried out at a nozzle; The second Z-axis pulley is provided with the second extruder motor; the second extruder is arranged above the second extruder motor, and is connected to the second nozzle of the printer through a feeding pipe ; The second extruder motor drives the second extruder, and drives the wire material to be transported to the second nozzle of the printer through the feeding pipe for printing. 7. The high-precision speed-increasing 3D printer according to claim 1, wherein the Y-axis motion platform comprises: a Y-axis guide rod, a Y-axis motor, a hot bed fixing plate and a hot bed; the Y-axis guide The rod is fixed in the middle of the base and is perpendicular to the first X-axis support rod and the second X-axis support rod respectively; the hot bed fixing plate is slidably connected to the Y-axis guide rod; the hot bed The bottom of the fixed plate is provided with a plurality of guide wheels; the plurality of guide wheels are sleeved on the Y-axis guide rod; the Y-axis motor is set on the Y-axis guide rod; the Y-axis motor is synchronized by The belt drives the hot bed fixing plate to drive the hot bed to slide back and forth along the Y-axis guide rod in the Y-axis direction. 8. A printing method for a high-precision speed-increasing 3D printer, wherein the printing method is based on the high-precision speed-increasing 3D printer of claim 1; the printing method comprises: When the surface features are large, the first nozzle of the printer is used to continuously print the surface features of the 2-layer 3D model through 2 surface feature printing strokes, and the second nozzle of the printer is switched to print the internal filling and external support of the 2-layer 3D model through one printing stroke; When the surface features are small, the first nozzle of the printer is used to continuously print the surface features and internal filling of the 2-layer 3D model through 2 surface feature printing strokes, and the second nozzle of the printer is switched to print the 2-layer 3D model through 1 printing stroke. of external support. 9 . The printing method for a high-precision speed-increasing 3D printer according to claim 8 , wherein the diameter of the nozzle of the second nozzle of the printer is twice the diameter of the nozzle of the first nozzle of the printer. 10 .

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