CN115533118A - Method for preparing metal two-dimensional code by using 3D printing equipment and three-dimensional metal two-dimensional code - Google Patents
Method for preparing metal two-dimensional code by using 3D printing equipment and three-dimensional metal two-dimensional code Download PDFInfo
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- CN115533118A CN115533118A CN202211210437.9A CN202211210437A CN115533118A CN 115533118 A CN115533118 A CN 115533118A CN 202211210437 A CN202211210437 A CN 202211210437A CN 115533118 A CN115533118 A CN 115533118A
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- 239000002184 metal Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000010146 3D printing Methods 0.000 title claims abstract description 52
- 239000000758 substrate Substances 0.000 claims abstract description 70
- 238000002844 melting Methods 0.000 claims abstract description 21
- 230000008018 melting Effects 0.000 claims abstract description 21
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 14
- 238000003754 machining Methods 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 description 9
- 238000007493 shaping process Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 230000036544 posture Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/80—Data acquisition or data processing
- B22F10/85—Data acquisition or data processing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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Abstract
The invention relates to a method for preparing a metal two-dimensional code by using 3D printing equipment and a three-dimensional metal two-dimensional code. The method for preparing the metal two-dimensional code by using the 3D printing equipment comprises the following steps: providing a substrate; providing a plurality of bearing plates made of metal materials; the bearing plates are correspondingly and detachably arranged on the mounting stations one by one; positioning a substrate in a forming cavity of a selective laser melting 3D printing device; acquiring the position information of each bearing plate on the substrate; the laser carries out 3D printing according to a preset two-dimensional code image and the position information of the bearing plates so as to form a three-dimensional two-dimensional code forming structure on each bearing plate; and detaching the bearing plate from the substrate to obtain the three-dimensional metal two-dimensional code formed by the bearing plate and the two-dimensional code forming structure. By executing the method for preparing the metal two-dimensional code by using the 3D printing equipment, the batch processing efficiency of the three-dimensional metal two-dimensional code can be improved while the three-dimensional metal two-dimensional code is ensured to have higher product quality and identification degree.
Description
Technical Field
The invention relates to the technical field of two-dimensional code preparation, in particular to a method for preparing a metal two-dimensional code by using 3D printing equipment and a three-dimensional metal two-dimensional code.
Background
With the continuous development of the informatization technology, the two-dimension code has been widely applied in life and production, such as two-dimension code payment, two-dimension code logistics information tracking, two-dimension code business cards, two-dimension code goods picking, two-dimension code management production and the like. At present, the two-dimensional code mainly takes printer printing as a main part, and part of the two-dimensional code has special requirements and can be printed by laser, but the production modes have a common defect, and the two-dimensional code of a paper plate and the laser printing can not meet the requirements of durability, wear resistance and corrosion resistance of a client. In order to meet the requirements, the metal two-dimensional code is produced at the same time. However, the conventional metal two-dimensional code processing method generally has the problem of low processing speed. Particularly, in the batch processing of the metal two-dimensional code, a plurality of two-dimensional code patterns are usually processed and formed on a whole plate, and then the edge is cut by using a linear cutting mode.
Disclosure of Invention
Therefore, it is necessary to provide a method for preparing a metal two-dimensional code by using a 3D printing device and a three-dimensional metal two-dimensional code, which have both high processing accuracy and high batch processing efficiency, in order to solve the problem that the conventional metal two-dimensional code batch processing method has low processing efficiency.
A method for preparing a metal two-dimensional code by using 3D printing equipment comprises the following steps:
providing a substrate, wherein the substrate is provided with a plurality of mounting stations arranged at intervals;
providing a plurality of bearing plates made of metal materials;
correspondingly and detachably mounting the bearing plates on the mounting stations one by one;
positioning the substrate provided with the bearing plate in a forming cavity of a selective laser melting 3D printing device;
acquiring environment images of all the bearing plates on the substrate, and performing image recognition on the environment images to acquire position information of each bearing plate on the substrate;
3D printing is carried out on a laser of the laser selective melting 3D printing equipment according to a preset two-dimensional code image and the position information of the bearing plates, so that a three-dimensional two-dimensional code forming structure is formed on each bearing plate;
and detaching the bearing plate from the substrate to obtain the three-dimensional metal two-dimensional code formed by the bearing plate and the two-dimensional code forming structure.
In one embodiment, the step of detachably mounting the bearing plates on the mounting stations in a one-to-one correspondence manner comprises: and the bearing plates are correspondingly and detachably arranged on the mounting stations in a one-to-one manner in a threaded connection manner.
In one embodiment, the substrate is provided with a plurality of mounting holes as the mounting stations;
the step of providing a plurality of metal material bearing plates comprises the following steps: machining a metal plate to obtain a plate body with a preset size; one side of the plate body is provided with a threaded blind hole;
the step of mounting each bearing plate in a one-to-one correspondence and detachably on each mounting station in a threaded connection mode is as follows: and threading a threaded fastener through the mounting hole and into the corresponding threaded blind hole to detachably mount each bearing plate on the base plate.
In one embodiment, after the step of passing a threaded fastener through the mounting hole and threading into the corresponding threaded blind hole to detachably mount each of the carrier plates on the base plate, the method further comprises the steps of: the bearing plates are placed according to a preset placing posture by rotating the bearing plates;
the step of performing image recognition on the environment image to obtain the position information of each bearing plate on the substrate comprises the following steps: carrying out image recognition on the environment image to obtain the position information and the placing direction information of each bearing plate on the substrate;
the laser of the selective laser melting 3D printing equipment performs 3D printing according to a preset two-dimensional code image and the position information of the bearing plates, and the step of forming a three-dimensional two-dimensional code forming structure on each bearing plate comprises the following steps: and 3D printing is carried out on the laser of the laser selective melting 3D printing equipment according to a preset two-dimensional code image, the position information and the placing direction information of the bearing plates so as to form a three-dimensional two-dimensional code forming structure on each bearing plate.
In one embodiment, the step of forming the two-dimensional code forming structure on each of the carrier plates by the laser includes: the selective laser melting 3D printing equipment selects three different sintering processes for sintering in a partitioned manner, so that the two-dimensional code forming structure comprising the peripheral protective shell, the core substrate and the two-dimensional code body is formed on the bearing plate;
the peripheral protective shell is formed on the bearing plate; one side, away from the bearing plate, of the peripheral protective shell is provided with an accommodating groove; the core part base body is formed at the bottom of the accommodating groove and matched with the accommodating groove; the two-dimensional code body is a hollow structure formed on the core substrate according to a preset two-dimensional code image;
the density of the sintering process for forming the core substrate is smaller than that of the sintering process for forming the two-dimensional code body.
In one embodiment, the sintering process for molding the protective enclosure comprises: the density is more than or equal to 90 percent, the laser power is 100 to 500 watts, the scanning speed is 800 to 2000 millimeters per second, and the line spacing is 0.03 to 0.3 millimeters;
the sintering process for molding the core substrate is as follows: the density is 60 to 80 percent, the laser power is 100 to 500 watts, the scanning speed is 800 to 2000 millimeters per second, and the line spacing is 0.03 to 0.3 millimeters;
the sintering process for forming the two-dimensional code body comprises the following steps: the compactness is more than or equal to 99 percent, the laser power is 100W to 500W, the scanning speed is 800 mm/s to 2000 mm/s, and the line spacing is 0.03 mm to 0.3 mm.
In one embodiment, in the direction perpendicular to the bearing plate, the distance between the surface of the core base body on the side away from the bearing plate and the surface of the peripheral protective shell on the side away from the bearing plate is greater than the thickness of the two-dimensional code body.
In one embodiment, the core substrate and the two-dimensional code body are different in color.
In one embodiment, an orthographic projection of the two-dimensional code forming structure on the bearing plate coincides with the surface of the bearing plate.
The three-dimensional metal two-dimensional code is formed by the method for preparing the metal two-dimensional code by using the 3D printing equipment.
According to the method for preparing the metal two-dimensional code by using the 3D printing equipment and the three-dimensional metal two-dimensional code, the plurality of bearing plates are detachably arranged on the base plate, the laser selective melting 3D printing equipment is used for sequentially forming the two-dimensional code forming structures on the plurality of bearing plates respectively, and the plurality of bearing plates are detached from the base plate after forming, so that the plurality of three-dimensional metal two-dimensional codes are obtained. Compared with the mode that the metal two-dimensional codes are required to be cut by a linear cutting mode after being printed in batches in the prior art, the method for preparing the metal two-dimensional codes by using the 3D printing equipment is used for separating the metal two-dimensional codes by disassembling and assembling the bearing plates, so that the separation speed of each three-dimensional metal two-dimensional code is effectively increased, and the batch processing efficiency of the three-dimensional metal two-dimensional codes can be further improved. Further, acquire the positional information of all loading boards on the base plate, recycle the laser instrument and carry out 3D according to positional information and print to shaping two-dimensional code shaping structure on every loading board has improved the shaping precision greatly, is favorable to the promotion of product quality. Therefore, by executing the method for preparing the metal two-dimensional code by using the 3D printing equipment, the batch processing efficiency of the three-dimensional metal two-dimensional code can be improved while the three-dimensional metal two-dimensional code is ensured to have higher product quality and recognition degree.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:
fig. 1 is a cross-sectional view of a three-dimensional metal two-dimensional code according to an embodiment of the present invention;
fig. 2 is a front view of the three-dimensional metal two-dimensional code shown in fig. 1;
fig. 3 is a schematic flow chart illustrating a method for preparing a metal two-dimensional code by using a 3D printing apparatus according to a preferred embodiment of the present invention.
The reference numerals in the detailed description illustrate: 100. a three-dimensional metal two-dimensional code; 110. a carrier plate; 111. a threaded blind hole; 120. a two-dimensional shaped structure; 121. a peripheral protective shell; 1211. an accommodating groove; 122. a core substrate; 123. two-dimensional code body.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present, unless otherwise specified. It will also be understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or one or more intervening elements may also be present.
Where the terms "comprising," having, "and" including "are used herein, another element may be added unless a specific limiting term is used, such as" only, "" consisting of 8230 \8230; "consisting of", etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
As described in the background art, in the batch processing of the metal two-dimensional codes, a plurality of two-dimensional codes are generally printed on a whole board, and are cut and separated in a linear cutting direction after the printing is completed, so as to obtain the plurality of metal two-dimensional codes. But the mode of cutting and separating by utilizing linear cutting is very slow, and the batch processing efficiency of the metal two-dimensional code is greatly influenced. For this reason, the applicant proposes a method of preparing a metal two-dimensional code using a 3D printing apparatus.
Referring to fig. 1 to 3, an embodiment of the present application provides a method for preparing a metal two-dimensional code by using a 3D printing apparatus, which is used for processing a three-dimensional metal two-dimensional code 100 in batch. The method for preparing the metal two-dimensional code by using the 3D printing device includes steps S10 to S70.
Step S10, a substrate is provided. The base plate is provided with a plurality of mounting stations arranged at intervals.
Specifically, a substrate of a predetermined shape and size is obtained by means of machining. The mounting station can be a hole, a groove, a convex column, a buckle and other structures which are arranged on the substrate and are convenient for connecting other parts.
It should be noted that the substrate is used as an auxiliary tool, and can be reused in the batch processing process of the three-dimensional metal two-dimensional code 100, so that the substrate does not need to be re-processed during the processing process of each batch of the three-dimensional metal two-dimensional code 100.
Step S20 is to provide a plurality of metal carrier plates 110. Specifically, the plurality of carrier plates 110 are obtained by means of machining. The carrier plate 110 may be a rectangular plate, a polygonal edge, a circular plate, an opposite plate (e.g., a leaf shape, a cloud shape, a dialog shape, etc.), or a plate with other shapes, which may be designed according to the requirement of the edge shape of the three-dimensional metal two-dimensional code 100.
Step S30, the bearing plates 110 are detachably mounted on the mounting stations in a one-to-one correspondence manner.
The loading plate 110 is installed on the installation station in a one-to-one correspondence and detachable mode through threaded connection, clamping and the like, so that each loading plate 110 is fixed on the substrate, the probability of substrate deviation caused by the conditions of moving, shaking and the like of the substrate in the subsequent processing process is reduced, and the improvement of the processing precision is facilitated.
Step S40, positioning the substrate mounted with the bearing plate 110 in a molding cavity of the selective laser melting 3D printing device.
Specifically, in one embodiment, the substrate is placed into a molding cavity and positioned using structures within the molding cavity. In another embodiment, the substrate is positioned in the molding cavity by using other auxiliary structures such as a positioning tool, a threaded fastener, a spacer pin, and the like.
Step S50, obtaining the environment images of all the carrier plates 110 on the substrate, and performing image recognition on the environment images to obtain the position information of each carrier plate 110 on the substrate.
Specifically, a visual inspection system is used to acquire an environment image of all the carrier plates 110 on the substrate, and the environment image is subjected to image recognition to acquire coordinate information of each carrier plate 110 on the substrate.
Step S60, performing 3D printing by a laser of the selective laser melting 3D printing device according to a preset two-dimensional code image and the position information of the bearing plate 110, so as to form a three-dimensional two-dimensional code molding structure on each bearing plate 110.
The preset two-dimensional code image is designed by using computer software according to the requirement. Specifically, the selective laser melting 3D printing device moves the laser to a position directly above the current carrier plate 110 according to the position information of each carrier plate 110, and at this time, the laser performs 3D printing on the carrier plate 110 according to the preset two-dimensional code image, and after the two-dimensional code forming structure is completed, the laser is moved to a position directly above the next carrier plate 110 and performs 3D printing, and so on until the forming work of the two-dimensional code forming structure is completed on all the carrier plates 110.
In step S70, the carrier plate 110 is detached from the substrate to obtain the three-dimensional metal two-dimensional code 100 formed by the carrier plate 110 and the two-dimensional code forming structure.
It should be noted that the laser selective melting 3D printing apparatus forms a whole with the carrier plate 110 through a two-dimensional code forming structure formed on the carrier plate 110 by using a laser selective melting technology.
Specifically, after step S60 and before step S70, the method further includes the steps of: the substrate is taken out from the molding cavity to a predetermined position to facilitate the step S70.
By executing the steps S10 to S70, a plurality of three-dimensional metal two-dimensional codes 100 can be processed at one time, and batch processing of the three-dimensional metal two-dimensional codes 100 is realized. Utilize wire-electrode cutting 'S mode to cut metal component, speed is very slow, so the mode machining efficiency that utilizes wire-electrode cutting' S mode to carry out the separation of metal two-dimensional code among the prior art is very low, and through carrying out above-mentioned step S10 to S70, need not wire-electrode cutting just can realize the separation of a plurality of three-dimensional metal two-dimensional codes 100, compare in wire-electrode cutting, realize the processing and the separation of a plurality of three-dimensional metal two-dimensional codes 100 through the mode of dismouting loading board 110, speed is faster, three-dimensional metal two-dimensional code 100 batch machining efficiency has been improved greatly.
And before 3D shaping, the position information of all the bearing plates 110 on the substrate is obtained by obtaining the environment image of the bearing plates 110, the laser performs 3D printing according to the position information of each bearing plate 110, and two-dimensional code shaping structures are sequentially shaped on each bearing plate 110, so that the processing precision of each three-dimensional metal two-dimensional code 100 is ensured, and the product quality is improved. Therefore, the method for preparing the metal two-dimensional code by using the 3D printing equipment can improve the batch processing efficiency of the three-dimensional metal two-dimensional code 100 while ensuring higher processing precision and higher product quality.
In some embodiments, the step of forming the two-dimensional code forming structure on each of the carrier plates 110 by the laser is: the selective laser melting 3D printing device selects three different sintering processes to perform sintering in different regions, so as to form a two-dimensional code forming structure including a peripheral protective shell 121, a core substrate 122, and a two-dimensional code body 123 on the bearing plate 110.
The peripheral protection shell 121 is formed on the carrier plate 110. One side of the protective shell 121 facing away from the supporting plate 110 has a receiving groove 1211. The core substrate 122 is formed at the bottom of the receiving groove 1211 and matches with the receiving groove 1211. The two-dimensional code body 123 is a hollow structure formed on the core substrate 122 according to a preset two-dimensional code image. Therefore, the two-dimensional code forming structure is composed of three parts, namely a periphery protection part, a core part set and a two-dimensional code body 123, and the integrity of the three-dimensional metal two-dimensional code 100 can be effectively guaranteed.
The density of the sintering process for forming the core substrate 122 is smaller than that of the sintering process for forming the two-dimensional code body 123. So, the laser selective melting 3D printing apparatus selects three different sintering processes to perform selective sintering on the bearing plate 110, so as to obtain the peripheral protective shell 121, the core substrate 122 and the two-dimensional code body 123, and make the density of the core substrate 122 smaller than that of the two-dimensional code body 123, so the structure of the core substrate 122 is looser than that of the two-dimensional code body 123, and this loosening difference can form diffuse reflection of light, make pixel difference between the core substrate and the two-dimensional code body 123, which is beneficial for the camera to capture, and improves the identification degree of the three-dimensional metal two-dimensional code 100.
Further, in some embodiments, the sintering process for molding the protective peripheral shell 121 is: the density is more than or equal to 90 percent, the laser power is 100W to 500W, the scanning speed is 800 mm/s to 2000 mm/s, and the line spacing is 0.03 mm to 0.3 mm;
the sintering process for molding the core substrate 122 is: the density is 60 to 80 percent, the laser power is 100 to 500 watts, the scanning speed is 800 to 2000 millimeters/second, and the line spacing is 0.03 to 0.3 millimeters;
the sintering process for forming the two-dimensional code body 123 comprises the following steps: the compactness is more than or equal to 99 percent, the laser power is 100W to 500W, the scanning speed is 800 mm/s to 2000 mm/s, and the line spacing is 0.03 mm to 0.3 mm.
So, the density of two-dimensional code body 123 is greater than the density of peripheral protective housing 121, the density of peripheral protective housing 121 is greater than the density of core base member 122, not only can effectively guarantee to have great loose difference of structure between two-dimensional code body 123 and the core base member 122, be favorable to the improvement of three-dimensional metal two-dimensional code 100 discernment degree, but also can guarantee that peripheral protective housing 121 is comparatively hard, can play the effect of protection two-dimensional code body 123 effectively, thereby can prolong the life of three-dimensional metal two-dimensional code 100.
Further, in some embodiments, in a direction perpendicular to the loading plate 110, a distance between a surface of the core base 122 facing away from the loading plate and a surface of the peripheral protective shell 121 facing away from the loading plate 110 is greater than a thickness of the two-dimensional code body 123. Thus, the peripheral protective shell 121 can completely protect the whole two-dimensional code body 123 in the accommodating groove 1211, so that a height difference is formed between one side of the two-dimensional code body 123, which is away from the core body 122, and the opening edge of the accommodating groove 1211, thereby reducing the probability of the two-dimensional code body 123 being worn and the like, and being beneficial to further prolonging the service life of the three-dimensional metal two-dimensional code 100.
Further, in some embodiments, the core substrate 122 and the two-dimensional code body 123 are different colors. Specifically, the color of the peripheral protective shell 121, the core base 122, and the two-dimensional code body 123 are all different.
For example, when the color of the core base 122 is white, the color of the two-dimensional code body 123 may be black. Of course, the color of the core substrate 122 and the color of the two-dimensional code body 123 may be respectively selected from other colors with a large color difference, for example, the core substrate 122 is selected from yellow green, and the color of the two-dimensional code body 123 is selected from blue. Therefore, a large color difference is formed between the core substrate 122 and the two-dimensional code body 123, so that the two-dimensional code pixels can be conveniently grabbed, and the three-dimensional metal two-dimensional code 100 is higher in recognition degree.
In some embodiments, the step of step S30 is: the bearing plates 110 are detachably mounted on the mounting stations in a one-to-one correspondence manner by means of threaded connection.
Thus, when step S30 is executed, the detachable connection between each carrier plate 110 and the substrate can be realized through the threaded connection, and the operation is convenient and simple. Moreover, when step S70 is performed, the screw connection is adopted, so that each bearing plate 110 can be conveniently and quickly detached. Therefore, the threaded connection mode can further improve the separation speed of the three-dimensional metal two-dimensional code 100, and further improve the batch processing efficiency of the three-dimensional metal two-dimensional code 100.
Further, in some embodiments, the substrate is provided with a plurality of mounting holes as mounting stations. The mounting holes are a plurality of, can be threaded through holes, and can also be stepped through holes, smooth surface through holes and the like.
The step of step S20, comprising the steps of: machining a metal plate to obtain a plate body with a preset size; one side of the plate body is provided with a threaded blind hole 111.
The steps of mounting the bearing plates 110 on the mounting stations in a one-to-one correspondence and detachable manner by means of threaded connection are as follows: each of the carrier plates 110 is detachably mounted on the corresponding substrate by passing a threaded fastener through the mounting hole and screwing into the corresponding threaded blind hole 111. Wherein, the threaded fastener can be a bolt, a screw rod and the like.
So, twist the mounting hole and the screw thread blind hole 111 that corresponds in proper order through deviating from one side of loading board 110 with threaded fastener from the base plate, can realize the installation of loading board 110 on the base plate, not only convenient, swift, but also can guarantee to be used for the integrality of shaping two-dimensional code shaping structure one side on the loading board 110, be favorable to three-dimensional metal two-dimensional code 100 to use the promotion of experiencing.
Further, in some embodiments, after the step of passing the threaded fasteners through the mounting holes and screwing the threaded fasteners into the corresponding threaded blind holes 111 to detachably mount each of the carrier plates 110 on the base plate, the method further comprises the steps of: through rotating the bearing plate 110, the bearing plate 110 is placed according to a preset placing posture. Specifically, the placing direction of each carrier plate 110 is adjusted by manually twisting the carrier plates 110, so that the carrier plates 110 are placed according to a preset placing posture. Therefore, the placing postures of all the bearing plates 110 on the substrate can be ensured to be consistent.
Step S50 is: the environmental image is subjected to image recognition to obtain the position information and the placement direction information of each bearing plate 110 on the substrate. Because there is an error in the manner of adjusting the placing direction of the carrier plate 110 by manually rotating the carrier plate 110, accurate information on the placing direction of the carrier plate 110 can be obtained according to the environmental image.
Step S60 is: the laser of the selective laser melting 3D printing device performs 3D printing according to a preset two-dimensional code image, the position information and the placement direction information of the bearing plates 110, so as to form a three-dimensional two-dimensional code molding structure on each bearing plate 110.
In the process of executing step S60, the selective laser melting 3D printing device controls the laser to move to the designated position according to the position information of each bearing plate 110, and then controls the laser to adjust the forming direction according to the placement direction information of the bearing plate 110 at the designated position, so as to ensure that the forming directions of all two-dimensional code forming structures on the corresponding bearing plate 110 are consistent, and further improve the processing precision and product quality of the three-dimensional metal two-dimensional code 100.
In some embodiments, the orthographic projection of the two-dimensional code forming structure on the bearing plate 110 coincides with the surface of the bearing plate 110. From this, the outline of two-dimensional code forming structure is the same with the outline of loading board 110 to avoid loading board 110 to stick out the condition in two-dimensional code forming structure and take place, make three-dimensional metal two-dimensional code 100 more regular, be favorable to the promotion that three-dimensional metal two-dimensional code 100 used the experience.
Based on the same inventive concept, the invention further provides a three-dimensional metal two-dimensional code 100, and the three-dimensional metal two-dimensional code 100 is prepared by adopting the method for preparing the metal two-dimensional code by using the 3D printing device provided by the embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for preparing a metal two-dimensional code by using 3D printing equipment is characterized by comprising the following steps:
providing a substrate, wherein the substrate is provided with a plurality of mounting stations arranged at intervals;
providing a plurality of bearing plates made of metal materials;
correspondingly and detachably mounting the bearing plates on the mounting stations one by one;
positioning the substrate provided with the bearing plate in a forming cavity of a laser selective melting 3D printing device;
acquiring environment images of all the bearing plates on the substrate, and performing image recognition on the environment images to acquire position information of each bearing plate on the substrate;
3D printing is carried out on a laser of the laser selective melting 3D printing equipment according to a preset two-dimensional code image and the position information of the bearing plates, so that a three-dimensional two-dimensional code forming structure is formed on each bearing plate;
and detaching the bearing plate from the substrate to obtain the three-dimensional metal two-dimensional code formed by the bearing plate and the two-dimensional code forming structure.
2. The method of claim 1, wherein the step of removably mounting each of the carrier plates in a one-to-one correspondence to each of the mounting stations comprises: and the bearing plates are correspondingly and detachably arranged on the mounting stations in a one-to-one manner in a threaded connection manner.
3. The method of claim 2, wherein the substrate defines a plurality of mounting holes as the mounting stations;
the step of providing a plurality of metal material bearing plates comprises the following steps: machining a metal plate to obtain a plate body with a preset size; one side of the plate body is provided with a threaded blind hole;
the bearing plates are correspondingly and detachably arranged on the mounting stations in a threaded connection mode, and the step of arranging the bearing plates on the mounting stations is as follows: and threading a threaded fastener through the mounting hole and into the corresponding threaded blind hole to detachably mount each bearing plate on the base plate.
4. The method of claim 1, wherein after the step of passing threaded fasteners through said mounting holes and into corresponding said threaded blind holes to removably mount each of said carrier plates to said base plate, further comprising the step of: the bearing plate is placed according to a preset placing posture by rotating the bearing plate;
the step of performing image recognition on the environment image to obtain the position information of each bearing plate on the substrate comprises the following steps: carrying out image recognition on the environment image to obtain the position information and the placing direction information of each bearing plate on the substrate;
the laser of the selective laser melting 3D printing device performs 3D printing according to a preset two-dimensional code image and the position information of the bearing plates, and the step of forming a three-dimensional two-dimensional code forming structure on each bearing plate comprises the following steps: and 3D printing is carried out on the laser of the laser selective melting 3D printing equipment according to a preset two-dimensional code image, the position information and the placing direction information of the bearing plates so as to form a three-dimensional two-dimensional code forming structure on each bearing plate.
5. The method of claim 1, wherein the step of the laser molding the two-dimensional code molding structure on each of the carrier plates is: the selective laser melting 3D printing equipment selects three different sintering processes for sintering in a partitioned manner, so that the two-dimensional code forming structure comprising the peripheral protective shell, the core substrate and the two-dimensional code body is formed on the bearing plate;
the peripheral protective shell is formed on the bearing plate; one side, away from the bearing plate, of the peripheral protective shell is provided with an accommodating groove; the core substrate is formed at the bottom of the accommodating groove and matched with the accommodating groove; the two-dimensional code body is a hollow structure formed on the core substrate according to a preset two-dimensional code image;
the density of the sintering process for forming the core substrate is smaller than that of the sintering process for forming the two-dimensional code body.
6. The method according to claim 5, wherein the sintering process used to shape the protective enclosure is: the density is more than or equal to 90 percent, the laser power is 100 to 500 watts, the scanning speed is 800 to 2000 millimeters per second, and the line spacing is 0.03 to 0.3 millimeters;
the sintering process for molding the core substrate is as follows: the density is 60 to 80 percent, the laser power is 100 to 500 watts, the scanning speed is 800 to 2000 millimeters/second, and the line spacing is 0.03 to 0.3 millimeters;
the sintering process for forming the two-dimensional code body comprises the following steps: the density is more than or equal to 99 percent, the laser power is 100 to 500 watts, the scanning speed is 800 to 2000 millimeters per second, and the line spacing is 0.03 to 0.3 millimeters.
7. The method according to claim 5, wherein a distance between a surface of the core base on a side facing away from the loading plate and a surface of the protective enclosure on a side facing away from the loading plate in a direction perpendicular to the loading plate is greater than a thickness of the two-dimensional code body.
8. The method of claim 5, wherein the core substrate and the two-dimensional code body are different colors.
9. The method of claim 1, wherein an orthographic projection of the two-dimensional code forming structure on the carrier plate coincides with the surface of the carrier plate.
10. A three-dimensional metal two-dimensional code, characterized in that, the three-dimensional metal two-dimensional code adopts the method of utilizing 3D printing apparatus to prepare metal two-dimensional code of any one of claims 1 to 9 to mould.
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