CN112192839B - Precise 3D printing device and method - Google Patents

Abstract

The invention discloses a precision 3D printing device and a method, the device comprises a portal frame, a first moving platform, a second moving platform, a first laser 3D printing device and a second laser 3D printing device, wherein the first laser 3D printing device moves in the working space below the portal frame through a first slide bar and a second slide bar which are arranged on the portal frame, the second laser 3D printing device moves through a second moving platform which is arranged on the first moving platform to divide a mould to be printed into a first precision area and a second precision area according to precision, the first laser 3D printing device and the second laser 3D printing device respectively print the first precision area and the second precision area, the two laser 3D printing devices are used for printing operation in a coordinated manner, the precision of mould printing can be improved on the premise of ensuring the printing efficiency, and the problem of high precision difference of the laser 3D printing device in the prior art is solved, high printing precision and poor efficiency.

Description

Precise 3D printing device and method

Technical Field

The disclosure relates to the technical field of 3D printing, in particular to a precise 3D printing device and method.

Background

3D printing is a rapid prototyping technology, also known as additive manufacturing technology, which is a technology for manufacturing an object by printing layer by layer on an adhesive material such as powdered metal or plastic based on a digital model file.

3D printing is typically achieved using digital technology material printers. The method is often used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and is gradually used for directly manufacturing some products, and parts printed by the technology are already available. The technology is applied to the fields of industrial design, construction, engineering and automobiles, aerospace, civil engineering and the like. But 3D prints and is carrying out large-scale mould printing in-process, and too coarse when printing mould detail or meticulous point, lead to printing precision and descend, the mould that makes print out cooperates when the later stage carries out the work piece assembly and goes up the deviation problem that appears easily, if change the 3D of high accuracy and print, print job cycle again and drag very long, reduce efficiency.

Disclosure of Invention

In view of prior art, at the in-process that utilizes large-scale 3D printing device to print large-scale mould, it prints the precision not high, it is too coarse when printing mould detail or meticulous point, cause the mould that prints to appear the deviation problem easily in the cooperation when the work piece assembly in the later stage, if change into high accuracy 3D printing device, its printing efficiency is very low again, the time overlength of printing a mould, inefficiency, the present disclosure provides a precision 3D printing device and method that has the printing precision height simultaneously and prints efficiency characteristics, concrete scheme is as follows.

The present disclosure provides a precision 3D printing device, including: the laser 3D printing device comprises a portal frame, a first moving platform, a first laser 3D printing device, a second moving platform and a second laser 3D printing device.

The portal frame is provided with a first slide bar moving along the y axis, and a second slide bar moving along the x axis is arranged on the first slide bar.

The first moving platform is arranged on the second slide bar and can move in a z-axis direction relative to the second slide bar, wherein the x-axis, the y-axis and the z-axis are mutually perpendicular.

The first laser 3D printing device is arranged on the first moving platform and used for printing a first precision area of a mold.

The second moving platform is connected with the bottom of the first moving platform and comprises a first sub-platform capable of moving along a first direction relative to the first moving platform, a second sub-platform capable of moving along a second direction relative to the first sub-platform and a third sub-platform capable of moving along a third direction relative to the second sub-platform.

And the second laser 3D printing device is arranged on the third sub-platform and is used for printing a second precision area of the die.

Wherein the precision of the first precision region is lower than the precision of the second precision region.

According to some embodiments of the disclosure, the gantry is provided with a sliding slot through which the first and second slide bars slide.

According to some embodiments of the present disclosure, the first laser 3D printing device and the second laser 3D printing device each include a laser and a powder feeder.

According to some embodiments of the present disclosure, a first servo electric device and a second servo electric device are disposed on the gantry, the first servo electric device drives the first slide bar to move along the y-axis, and the second servo electric device drives the second slide bar to move along the x-axis.

According to some embodiments of the present disclosure, the first servo electric device drives the first slide bar to move along the y-axis through the lead screw, and the second servo electric device drives the second slide bar to move along the x-axis through the lead screw.

According to some embodiments of the present disclosure, the first laser 3D printing device and the second laser 3D printing device may print jobs simultaneously or print jobs separately.

According to some embodiments of the present disclosure, a nozzle diameter of the first laser 3D printing device is larger than a nozzle diameter of the second laser 3D printing device.

According to some embodiments of the present disclosure, the first laser 3D printing device and the second laser 3D printing device may replace lasers of different power.

According to some embodiments of the present disclosure, the portal frame is provided with a shock pad at a lower end thereof.

The present disclosure also provides a method for printing by using the precision 3D printing apparatus, including the following steps.

And establishing a three-dimensional model of the mold to be printed in the 3D mode, and carrying out layering processing on the three-dimensional model to obtain the profile information of each layer of section.

And determining the printing precision of the profile information of each layer of section, dividing the part with the printing precision lower than a preset value into a first precision area, and dividing the part with the printing precision higher than the preset value into a second precision area.

And controlling the first laser 3D printing device to print the first precision area and controlling the second laser 3D printing device to print the second precision area according to the first precision area, the second precision area and the profile information of each layer of section.

Can find out through above-mentioned technical scheme, the technical scheme that this disclosure provides, through setting up the first moving platform that can move on the portal frame along the x axle, y axle and z axle direction, carry on the low accuracy, the first laser 3D printing device of high efficiency, set up the second moving platform that can freely remove in three direction in the bottom of first moving platform simultaneously, carry on the second laser 3D printing device of high accuracy, divide into two printing areas according to the precision with the mould of treating printing and correspond first laser 3D printing device and second laser 3D printing device respectively, in the mould printing process, two laser 3D printing devices are the operation of mutually supporting, can accomplish to compromise simultaneously and print efficiency and printing precision, solve the above-mentioned problem among the prior art.

Drawings

Fig. 1 schematically illustrates a structural schematic diagram of a precision 3D printing apparatus of an embodiment of the present disclosure;

fig. 2 schematically illustrates a partial structural schematic view of a precision 3D printing apparatus of an embodiment of the present disclosure;

fig. 3 schematically illustrates another partial structural schematic diagram of the precision 3D printing apparatus according to the embodiment of the present disclosure.

Wherein, 1 represents a portal frame, 11 represents a beam, 12 represents a first chute, and 13 represents a column; 2 denotes a first slide bar, 21 denotes a second runner; 3 denotes a second slide bar; 4 denotes a first moving platform, 41 denotes a first laser 3D printing apparatus; 5 denotes a second moving platform, 51 denotes a first sub-platform, 52 denotes a second sub-platform, 53 denotes a third sub-platform, and 54 denotes a second laser 3D printing apparatus; and 6 denotes a mold.

Detailed Description

For a better understanding of the technical solutions, the objects and the advantages of the present disclosure, further understanding can be obtained by referring to the following detailed description and accompanying drawings.

It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It may be evident, however, that one or more embodiments may be practiced without these specific details. Furthermore, in the following description, descriptions of well-known technologies are omitted so as to avoid unnecessarily obscuring the concepts of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "comprising" as used herein indicates the presence of the features, steps, operations but does not preclude the presence or addition of one or more other features.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

In addition, the precision 3D printing apparatus and the printing method provided by the present disclosure are particularly suitable for printing jobs of large molds, where fig. 1 schematically illustrates a structural schematic diagram of the precision 3D printing apparatus according to an embodiment of the present disclosure, fig. 2 schematically illustrates a partial structural schematic diagram of the precision 3D printing apparatus according to an embodiment of the present disclosure, and fig. 3 schematically illustrates another partial structural schematic diagram of the precision 3D printing apparatus according to an embodiment of the present disclosure.

As shown in fig. 1 and 2, the present disclosure provides a precision 3D printing apparatus, including: the system comprises a portal frame 1, a first moving platform 4, a first laser 3D printing device 41, a second moving platform 5 and a second laser 3D printing device 54.

Wherein, portal frame 1 is as the fixed bolster, for laser 3D printing device provides fixed, support and the effect that removes.

Optionally, the gantry 1 is a frame structure, and includes members such as a beam 11, a column 13, and an inclined strut, two slide bars perpendicular to each other are arranged on the upper portion of the beam 11, and the gantry 1 can move in an operation space below the frame structure in cooperation with a moving platform capable of sliding in the vertical direction relative to the slide bars.

Optionally, the portal frame 1 is of a portal structure, the portal structure is matched with a sliding rail/sliding groove on the operation surface to move, and meanwhile, the portal frame 1 can move in the operation space below the portal structure in a manner of being matched with a moving platform capable of horizontally and vertically moving relative to the portal structure.

The stability of the gantry 1 has an influence on the accuracy of the stamping die 6. According to some embodiments of the present disclosure, the lower end of the gantry 1 is provided with a shock pad for enhancing the stability of the gantry 1 and reducing the influence on the printing precision. Specifically, a shock absorbing pad is provided at the lower end of the column 13.

For convenience of description and understanding, in the present disclosure, a space o-x-y-z rectangular coordinate system is established by taking a junction of two adjacent beams 11 at the top of the gantry 1 as an origin, taking a straight line where the two beams 11 are located as an x axis and a y axis, and taking a straight line where the upright post 13 at the origin is located as a z axis, and it should be noted that the space o-x-y-z rectangular coordinate system is only provided for better understanding of the present disclosure, and is not taken as a limitation to the protection scope of the present disclosure.

According to some embodiments of the present disclosure, the gantry 1 is provided with a first slide bar 2 moving along the y-axis, and a second slide bar 3 moving along the x-axis is provided on the first slide bar 2. Specifically, the gantry 1 includes a beam 11 and an upright column 13, optionally, a first chute 12 is arranged on the beam 11 at the top of the gantry 1, two ends of the first sliding bar 2 are respectively clamped in the first chute 12, and the first sliding bar 2 slides along the y axis in the first chute 12 under the driving of the driving device; meanwhile, optionally, a second sliding slot 21 is arranged on the first sliding rod 2, and the second sliding rod 3 is clamped in the second sliding slot 21 and slides in the second sliding slot 21 along the x-axis direction under the driving of the driving device.

According to some embodiments of the present disclosure, optionally, the driving device is a servo motor, one or more servo motors connected to the control system are arranged on the gantry 1, and the servo motor is matched with the first slide bar 2 and the second slide bar 3 to drive the first moving platform 4 and the second moving platform 5 to slide, and the specific connection mode may be one or more of screw transmission, gear transmission, chain transmission or belt transmission, and may also be a transmission structure of other forms, where the application is not particularly limited.

Further, the control system is not the inventive point in the present disclosure, which is the prior art, and will not be described in detail herein, and those skilled in the art can correctly understand it according to the prior art.

According to some embodiments of the present disclosure, the first moving platform 4 is disposed on the second slide bar 3 and is movable relative to the second slide bar 3 in a z-axis direction, wherein the x-axis, the y-axis and the z-axis are perpendicular to each other. Alternatively, a linear motion mechanism such as a sliding slot, a sliding rail, or a rack may be disposed on the second sliding rod 3, and a specific structure is not specifically limited in this disclosure, and those skilled in the art can accurately understand according to the prior art.

According to some embodiments of the present disclosure, a first laser 3D printing device 41 is provided on the first moving platform 4 for printing a first precision region of the mold 6.

With the above configuration, the first laser 3D printing apparatus 41 can be moved in the working space below the gantry 1 by the driving of the servo motor.

Analyzing the mold 6 to be printed, setting a threshold value according to the nozzle diameters (i.e. the printing precision of the laser 3D printing device) of the first laser 3D printing device 41 and the second laser 3D printing device 54, and dividing each layer and each point of the mold 6 to be printed into a first precision area and a second precision area according to the printing precision.

As shown in fig. 3, the second moving platform 5 is connected to the bottom of the first moving platform 4, and includes a first sub-platform 51 movable in a first direction relative to the first moving platform 4, a second sub-platform 52 movable in a second direction relative to the first sub-platform 51, and a third sub-platform 53 movable in a third direction relative to the second sub-platform 52.

According to some embodiments of the present disclosure, optionally, a sliding rail and a sliding groove are disposed between the first sub-platform 51 and the second sub-platform 52, and between the second sub-platform 52 and the third sub-platform 53, and a motor drives a lead screw to realize the relative movement between the first sub-platform 51, the second sub-platform 52, and the third sub-platform 53.

Optionally, linear motion mechanisms are disposed between the first sub-platform 51 and the second sub-platform 52, and between the second sub-platform 52 and the third sub-platform 53, and may be any one of a rack and pinion, a belt drive, or a linear stepping motor.

According to some embodiments of the present disclosure, the second mobile platform 5 is pivotally connected to the bottom of the first mobile platform 4, and the second mobile platform 5 can rotate relative to the bottom of the first mobile platform 4, so as to provide more efficient steering and movement for the second mobile platform 5.

According to some embodiments of the present disclosure, optionally, the first direction, the second direction and the third direction are perpendicular to each other. The straight lines of the three directions form another rectangular space coordinate system, so that the three-dimensional data of the mold 6 correspond to each other in the later period, the data calculation difficulty is reduced, and the printing efficiency is improved.

A second laser 3D printing device 54 is arranged on the third sub-platform 53 for printing a second precision region of the mold 6.

The second moving platform 5 can move in the working space below the gantry 1 in cooperation with the first moving platform 4, and the second laser 3D printing apparatus 54 mounted on the second moving platform 5 can also move in the working space below the gantry 1.

Wherein the precision of the first precision area is lower than that of the second precision area. That is, the area on the mold 6 with low precision requirement is printed out fast and efficiently through the first laser 3D printing device 41, and meanwhile, the second laser 3D printing device 54 is matched to print the details of the mold 6 or other high-precision areas, and the two laser 3D printing devices of different models cooperate to perform a printing operation on the mold 6.

According to some embodiments of the present disclosure, the first laser 3D printing device 41 and the second laser 3D printing device 54 each include a laser and a powder feeder. Specifically, the first laser 3D printing device 41 and the second laser 3D printing device 54 may be replaced with appropriate lasers according to the specific conditions of the mold 6 to be printed.

According to some embodiments of the present disclosure, the first laser 3D printing device 41 and the second laser 3D printing device 54 may print jobs simultaneously or print jobs separately. Specifically, a three-dimensional model needs to be established for the mold 6 to be printed, the three-dimensional model is subjected to layering processing to obtain profile information of each layer of section, the printing precision of the profile information of each layer of section is determined, a part with the printing precision lower than a preset value is divided into a first precision area, a part with the printing precision higher than the preset value is divided into a second precision area, and specific printing steps and sequences of the first laser 3D printing device 41 and the second laser 3D printing device 54 are determined according to the profile information and the printing precision information of each layer.

According to some embodiments of the present disclosure, the nozzle diameter of the first laser 3D printing device 41 is larger than the nozzle diameter of the second laser 3D printing device 54. That is, the printing efficiency of the first laser 3D printing device 41 is higher than that of the second laser 3D printing device 54, and at the same time, the printing accuracy of the first laser 3D printing device 41 is lower than that of the second laser 3D printing device 54.

The present disclosure also provides a method for printing using the precision 3D printing apparatus, including the following steps.

And establishing a three-dimensional model of the mold 6 to be printed in 3D, and carrying out layering processing on the three-dimensional model to obtain the profile information of each layer of section. Specifically, the mold 6 to be printed is divided into a plurality of layers in the vertical direction according to the thickness printed by the first laser 3D printing device 41 and the second laser 3D printing device 54 at each time, and profile information of each layer is recorded and analyzed.

And determining the printing precision of the profile information of each layer of section, dividing the part of each layer with the printing precision lower than a preset value into a first precision area, and dividing the part of each layer with the printing precision higher than the preset value into a second precision area.

And controlling the first laser 3D printing device 41 to print the first precision area and controlling the second laser 3D printing device 54 to print the second precision area according to the first precision area, the second precision area and the profile information of each layer of section.

After the contour information and the printing precision of each layer of cross section are obtained, optimization processing is performed on the contour information and the printing precision, the printing scheme with the highest efficiency is calculated through data analysis, and the control system completes the printing operation of the mold 6 by operating the first laser 3D printing device 41 and the second laser 3D printing device 54.

So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the components are not limited to the specific structures, shapes or manners mentioned in the embodiments, and those skilled in the art may easily modify or replace them.

It is also noted that, unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing dimensions, ranges, and so forth, used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.

It will be appreciated by a person skilled in the art that various combinations and/or combinations of features described in the various embodiments and/or in the claims of the invention are possible, even if such combinations or combinations are not explicitly described in the invention. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present invention may be made without departing from the spirit or teaching of the invention. All such combinations and/or associations fall within the scope of the invention

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The precise 3D printing device is characterized by comprising:

the gantry comprises a gantry frame, a first sliding rod and a second sliding rod, wherein the first sliding rod moves along the y axis, and the second sliding rod moves along the x axis;

a first moving platform disposed on the second slide bar and movable in a z-axis direction relative to the second slide bar, wherein the x-axis, the y-axis and the z-axis are perpendicular to each other;

the first laser 3D printing device is arranged on the first moving platform and used for printing a first precision area of the mold;

the second moving platform is connected with the bottom of the first moving platform and comprises a first sub-platform capable of moving along a first direction relative to the first moving platform, a second sub-platform capable of moving along a second direction relative to the first sub-platform and a third sub-platform capable of moving along a third direction relative to the second sub-platform;

The second laser 3D printing device is arranged on the third sub-platform and used for printing a second precision area of the die, the diameter of a nozzle of the first laser 3D printing device is larger than that of the nozzle of the second laser 3D printing device, and the first laser 3D printing device and the second laser 3D printing device can print jobs simultaneously or independently;

the method comprises the steps of conducting layering processing on a three-dimensional model of the mold to obtain profile information of each layer of section, determining printing precision of the profile information of each layer of section, dividing a part with the printing precision lower than a preset value into a first precision area, dividing a part with the printing precision higher than the preset value into a second precision area, and enabling the precision of the first precision area to be lower than that of the second precision area.

2. The precision 3D printing device according to claim 1, wherein the gantry is provided with a sliding slot through which the first and second slide bars slide.

3. The precision 3D printing device of claim 1, wherein the first laser 3D printing device and the second laser 3D printing device each comprise a laser and a powder feeder.

4. The precision 3D printing device according to claim 1, wherein a first servo electric device and a second servo electric device are disposed on the gantry, the first servo electric device drives the first slide bar to move along the y-axis, and the second servo electric device drives the second slide bar to move along the x-axis.

5. The precision 3D printing device according to claim 4, wherein the first servo electrical device drives the first slide bar to move along the y-axis via a lead screw, and the second servo electrical device drives the second slide bar to move along the x-axis via a lead screw.

6. The precision 3D printing device according to claim 1, wherein the first laser 3D printing device and the second laser 3D printing device are replaceable with lasers of different power.

7. The precision 3D printing device according to claim 1, wherein a shock pad is provided at a lower end of the gantry.

8. A method of printing with the precision 3D printing apparatus of any of claims 1 to 7, comprising the steps of:

establishing a three-dimensional model of a to-be-3D printing mold, and carrying out layering processing on the three-dimensional model to obtain profile information of each layer of section;

Determining the printing precision of the profile information of each layer of section, dividing the part with the printing precision lower than a preset value into a first precision area, and dividing the part with the printing precision higher than the preset value into a second precision area;

and controlling the first laser 3D printing device to print the first precision area and controlling the second laser 3D printing device to print the second precision area according to the first precision area, the second precision area and the profile information of each layer of section.

Images