阅读说明：本技术 一种阳极表面彩色印刷方法 (Anode surface color printing method ) 是由 李雷 于 2021-09-18 设计创作，主要内容包括：本发明实施例提供了一种阳极表面彩色印刷方法,包括以下步骤：将经过处理工序的板材进行阳极氧化；在印刷基材上印刷墨水；将经过阳极氧化的板材置于预热后的印刷机器上,再将经过印刷墨水的印刷基材置于所述经过阳极氧化的板材上,然后控制印刷过程的负压为-0.6～-2MP、温度为60℃～200℃,控制印刷时间为10s～20min；对板材阳极氧化表面进行微孔封闭。确保印花的美观和耐用性。形成的产品最终具有优异的色彩还原度和表现力,有极强的装饰性和耐候性,优良的耐高温性能和低温韧性有超强的耐磨性和抗污性,图案处理色差易于控制,工件整体表现出极强的金属质感。(The embodiment of the invention provides a method for printing colors on the surface of an anode, which comprises the following steps: carrying out anodic oxidation on the plate subjected to the treatment process; printing ink on a printing substrate; placing the plate subjected to anodic oxidation on a preheated printing machine, placing a printing base material subjected to printing ink on the plate subjected to anodic oxidation, controlling the negative pressure of the printing process to be-0.6-2 MP, the temperature to be 60-200 ℃, and controlling the printing time to be 10 s-20 min; and (4) sealing micropores on the anodic oxidation surface of the plate. Ensure the aesthetic appearance and durability of the printing. The formed product has excellent color reduction degree and expressive force, extremely strong decoration and weather resistance, excellent high temperature resistance and low temperature toughness, extremely strong wear resistance and pollution resistance, easy control of pattern treatment color difference, and extremely strong metal texture of the whole workpiece.)

1. The anode surface color printing method is characterized by comprising the following steps of:

carrying out anodic oxidation on the plate subjected to the treatment process;

printing ink on a printing substrate;

placing the plate subjected to anodic oxidation on a preheated printing machine, placing a printing base material subjected to printing ink on the plate subjected to anodic oxidation, controlling the negative pressure of the printing process to be-0.6-2 MP, the temperature to be 60-200 ℃, and controlling the printing time to be 10 s-20 min;

and (4) sealing micropores on the anodic oxidation surface of the plate.

2. The method for color printing on the surface of an anode according to claim 1, wherein the step of processing the plate comprises:

blank processing, primary polishing, chemical degreasing, hot water cleaning, cold water flushing, secondary polishing, chip removal and neutralization.

3. The method for color printing on the surface of an anode according to claim 1, wherein the temperature of the printing process is controlled to be 80 ℃ to 200 ℃.

4. The method for color printing on the surface of an anode as claimed in claim 1, wherein the printing process time is controlled to be 50 s-20 min.

5. The method for color printing of an anode surface according to claim 2, wherein the hot water washing comprises: and cleaning the surface of the chemically degreased plate by using water at the temperature of 60-100 ℃.

6. The method of claim 2, wherein the cold water flushing comprises: and washing the surface of the plate washed by the hot water by using flowing cold water with the temperature of below 20 ℃.

Technical Field

The invention relates to the technical field of printing, in particular to a method for printing a color on the surface of an anode.

Background

More and more electronic product protective housings, products such as product shell adopt metal material, can increase the protection to the product to and handheld sense of holding, pleasing to the eye degree, but at present carry out the colour printing of durability on metal material hardly or the acceptance is not high, for example silk screen printing feels not good, can not carry out complicated polychrome printing, especially the processing of transition colour, ordinary post-painting heat-transfer seal/thermal sublimation, surface physical properties and chemical properties can not satisfy daily use again. It is desirable to find a printing that is aesthetically pleasing, reliable, durable, and also amenable to high volume production.

The anodic oxidation process is mature, but can only be oxidized into a single overall color, and the printing effect cannot be achieved. In the market, people also try to print on the anode workpiece in a color register for many times, which is labor-consuming, time-consuming, extremely high in waste and pollution and incapable of actual production. Direct printing with piezoelectric nozzles, thermal induction nozzles and electrostatic nozzles have also been tried on the basis of anodes, but the production efficiency is not high, and what is important is that the method is only effective for plane products and cannot print the surfaces of complex special-shaped curved surfaces.

The applicant has found that at least the following problems exist in the prior art: the printing on the surface of a metal material, especially a complex special-shaped curved surface, can not be effectively, reliably and durably carried out, so as to achieve the purpose of long-term use.

Disclosure of Invention

The technical problem solved by the embodiment of the invention is that effective, reliable and durable printing on the surface of a metal material cannot be carried out.

In order to achieve the above object, an embodiment of the present invention provides an anode surface color printing method, including the following steps:

carrying out anodic oxidation on the plate subjected to the treatment process;

printing ink on a printing substrate;

placing the plate subjected to anodic oxidation on a preheated printing machine, placing a printing base material subjected to printing ink on the plate subjected to anodic oxidation, controlling the negative pressure of the printing process to be-0.6-2 MP, the temperature to be 60-200 ℃, and controlling the printing time to be 10 s-20 min;

and (4) sealing micropores on the anodic oxidation surface of the plate.

Specifically, the plate material treatment process specifically comprises the following steps:

blank processing, primary polishing, chemical degreasing, hot water cleaning, cold water flushing, secondary polishing, chip removal and neutralization.

Specifically, the temperature in the printing process is controlled to be 80-200 ℃.

Specifically, the printing process time is controlled to be 50 s-20 min.

Specifically, the hot water cleaning includes: and cleaning the surface of the chemically degreased plate by using water at the temperature of 60-100 ℃.

Specifically, the cold water flushing includes: and washing the surface of the plate washed by the hot water by using flowing cold water with the temperature of below 20 ℃.

The technical scheme has the following beneficial effects: the invention carries out anodic oxidation on the plate or the workpiece, and the surface of the product after anodic oxidation is provided with an oxide film/oxide layer, and rich and compact capillary pores can be formed in the oxide film. Carry out the thermal sublimation printing on this oxidation film, use thermal sublimation technique to handle the ink of printing on media such as thermal sublimation film/thermal sublimation paper through thermal sublimation technology for the ink capsule of thermal sublimation is opened, and ink gasification then permeates the capillary aperture the inside after this anodic oxidation, has just also formed whole oxidation film top layer printing. And then sealing holes, thereby ensuring the beauty and the durability of the printing. The formed product has excellent color reduction degree and expressive force, extremely strong decoration and weather resistance, excellent high temperature resistance and low temperature toughness, extremely strong wear resistance and pollution resistance, easy control of pattern treatment color difference, and extremely strong metal texture of the whole workpiece.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an oxide film structure on the surface of an anodized plate according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a layered structure of an anodized plate according to an embodiment of the present invention.

The reference numbers illustrate:

1. an oxide film; 2. oxidizing pores; 3. an oxide layer; 4. an active layer; 5. and a substrate layer.

Detailed Description

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

The invention provides an anode surface color printing method, as shown in figure 1, comprising the following steps:

carrying out anodic oxidation on the plate subjected to the treatment process; the surface of the product (plate) after anodic oxidation is provided with an oxide film 1/oxide layer 3, as shown in fig. 2, the surface of the product (plate) after anodic oxidation is provided with the oxide layer 3, an active layer 4 and a base material layer 5 from top to bottom; the plate to be anodized is used as a substrate.

The oxide film 1 can form rich and compact capillary pores (oxide pores 2), and the oxide pores 2 can adsorb various lubricants and are suitable for manufacturing engine cylinders or other wear-resistant parts; the film has strong micropore adsorption capacity and can be colored into various beautiful and gorgeous colors.

Printing ink on a printing substrate; the printing substrate is used as a printing medium, and the thermal sublimation technology is convenient to use.

Placing the plate subjected to anodic oxidation on a preheated printing machine, placing a printing base material subjected to printing ink on the plate subjected to anodic oxidation, controlling the negative pressure of the printing process to be-0.6-2 MP, the temperature to be 60-200 ℃, and controlling the printing time to be 10 s-20 min; different printing parameters are adjusted according to different workpieces, and a good printing effect is achieved.

And (4) sealing micropores on the anodic oxidation surface of the plate. The surface of the product after anodic oxidation is provided with an oxide film/oxide layer, rich and compact capillary pores can be formed in the oxide film, and the appearance and durability of the printing can be ensured by carrying out micropore sealing on the anodic oxidation surface of the plate. The formed product has excellent color reduction degree and expressive force, extremely strong decoration and weather resistance, excellent high temperature resistance and low temperature toughness, extremely strong wear resistance and pollution resistance, easy control of pattern treatment color difference, and extremely strong metal texture of the whole workpiece.

The printing substrate comprises: PET membrane, PVC membrane, thermal transfer paper, thermal sublimation paper, laser paper, jet-ink paper.

The plate treatment process specifically comprises the following steps:

blank processing, primary polishing, chemical degreasing, hot water cleaning, cold water flushing, secondary polishing, chip removal and neutralization.

Blank processing: finishing primary processing and blanking of a workpiece in a plate cutting or aluminum casting mode;

primary polishing: polishing the workpiece in a mechanical treatment mode to remove a natural oxide layer on the surface;

chemical degreasing: using hot alkali solution to carry out emulsification and saponification treatment on the surface of the metal product with high quality, and removing grease on the surface of the workpiece;

hot water cleaning, namely cleaning the surface of the workpiece by using hot water at the temperature of 60-100 ℃ to remove emulsified oil in the last step;

and (3) cold water flushing: the surface cleanliness of the workpiece is further improved by cleaning with flowing cold water at the temperature of below 20 ℃;

and (3) secondary polishing: the surface effect of the workpiece is improved by using chemical polishing or electrochemical polishing;

removing dandruff: cleaning with cold water at the temperature of below 20 ℃ to remove the scraps generated in the previous step;

neutralizing: removing stains remained on the surface of the workpiece so as to improve the printing effect;

the temperature of the printing process is controlled to be 80-200 ℃.

The printing process time is controlled to be 50 s-20 min.

The hot water cleaning comprises: and cleaning the surface of the chemically degreased plate by using water at the temperature of 60-100 ℃.

The cold water flush comprises: and washing the surface of the plate washed by the hot water by using flowing cold water with the temperature of below 20 ℃.

The invention carries out anodic oxidation on the plate or the workpiece, and the surface of the product after anodic oxidation is provided with an oxide film/oxide layer, and rich and compact capillary pores can be formed in the oxide film. Carry out the thermal sublimation printing on this oxidation film, use thermal sublimation technique to handle the ink of printing on media such as thermal sublimation film/thermal sublimation paper through thermal sublimation technology for the ink capsule of thermal sublimation is opened, and ink gasification then permeates the capillary aperture the inside after this anodic oxidation, has just also formed whole oxidation film top layer printing. And then sealing holes, thereby ensuring the beauty and the durability of the printing. The formed product has excellent color reduction degree and expressive force, extremely strong decoration and weather resistance, excellent high temperature resistance and low temperature toughness, extremely strong wear resistance and pollution resistance, easy control of pattern treatment color difference, and extremely strong metal texture of the whole workpiece.

The above technical solutions of the embodiments of the present invention are described in detail below with reference to specific application examples, and reference may be made to the foregoing related descriptions for technical details that are not described in the implementation process.

Example 1:

the invention provides an anode surface color printing method (anode surface high-performance color printing method), as shown in figure 1, the ink printed on a thermal sublimation film/thermal sublimation paper and other media is subjected to thermal sublimation process treatment by using a thermal sublimation technology, so that thermally sublimed ink capsules are opened, the ink is gasified and then permeates into capillary pores after anodic oxidation, and the whole oxidation film surface layer printing is formed. According to different processes and machines, the temperature of the thermal sublimation process is 80-200 ℃, and the time is 10 seconds-15 minutes.

Through the oxidation of first step, the thermal sublimation of second portion is printed the back, passes through the hole sealing of third portion again, will make whole product surface no longer have the adsorptivity, fixes the color on the product surface simultaneously, finally realizes the printing.

The method mainly comprises the following steps: polishing/sand blasting/wire drawing, oil removing, shielding, anodic oxidation, thermal sublimation printing, hole sealing and drying.

The specific description is as follows:

blank processing: finishing primary processing and blanking of a workpiece in a plate cutting or aluminum casting mode;

primary polishing: polishing the workpiece in a mechanical treatment mode to remove a natural oxide layer on the surface;

chemical degreasing: emulsifying and saponifying the surface of the metal product 3 with high quality by using hot alkali solution to remove grease on the surface of the workpiece;

hot water cleaning, namely cleaning the surface of the workpiece by using hot water at the temperature of 60-100 ℃ to remove emulsified oil in the last step;

and (3) cold water flushing: the surface cleanliness of the workpiece is further improved by cleaning with flowing cold water at the temperature of below 20 ℃;

and (3) secondary polishing: the surface effect of the workpiece is improved by using chemical polishing or electrochemical polishing;

removing dandruff: cleaning with cold water at the temperature of below 20 ℃ to remove the scraps generated in the previous step;

neutralizing: removing stains remained on the surface of the workpiece so as to improve the printing effect;

after anodic oxidation and before hole sealing, the technological process required to be carried out is as follows:

printing or spray-painting special ink on a printing substrate with a special coating;

preheating a special printing machine and a jig;

placing the workpiece on a jig, and then placing the printed printing substrate on the workpiece;

according to different workpieces, color gas is permeated into micropores of the workpiece by regulating the negative pressure of-0.6 to-2 MP at the temperature of 60 to 200 ℃ for 50 seconds to 20 minutes;

hole sealing: the closing of the micropores is carried out in an anodic oxidation manner.

It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

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 merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.