Explanation of the most popular self-made curved s

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Explanation of self-made curved surface printer 1. Advantages of self-made curved surface printer 1. Curved surface printer itself is not a high-tech product, which is neither complex nor esoteric. A little understanding of some mechanical braking principles shows that where the fault occurs, people with rich printing experience can use local materials and make their own. The self-made curved surface printer has no electrical device, which avoids the maintenance trouble caused by circuit and air circuit failure in use; Moreover, the self-made curved surface printer has the advantages of light weight, low cost, simplicity, flexibility and multi-function. It not only changes the cumbersome, expensive, single function, rigid and monotonous of the traditional curved surface printing machine, but also caters to the particularity and diversification of modern curved surface substrate. 2、 What is curved surface printing

as the name suggests, in order to achieve the purposes of beautification, decoration and embellishment, the surface structure or shape is not a plane, but a shaped object of various materials with curved, arc, concave and convex shapes, such as water cups, wine cups, tea pots, ashtrays, various bottles and tubes commonly used in our daily life, as well as test tubes, smoking cups Plate printing at specific or unspecified positions on the surface of measuring tools can be called curved surface printing. 3、 The selection of scraper is important to guide and help enterprises resume the production of epidemic prevention guarantee materials as soon as possible and speed up production.

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the selection of scraper is critical in curved surface printing (Note: sometimes ignored by many plate printers). Scraper (also known as doctor blade), specifically, it is a hand or machine tool that squeezes the ink on the forming plate onto the substrate, usually with a thickness of 8 ~ 10mm, It is composed of a polyurethane adhesive strip with a hardness of 60 ~ 80 shore degrees (Shore A) and a wooden or aluminum handle. Experienced plate printers know that the doctor blade used in curved surface printing must have the conditions of two high and four resistance, that is, high elasticity and high hardness; Chemical resistance, solvent resistance, acid and alkali resistance, abrasion resistance. Especially when printing exquisite curved objects in chromatic printing, the choice of scraper should be paid more attention to. Only in this way can we achieve twice the result with half the effort, which has been proved to be the same in practice. 4、 The main principle of the curved surface printer

we will explain it with cylindrical objects. Most of the cylindrical curved substrates use bearing type outer diameter four point support to complete the rolling printing. The self-made curved surface printer is no exception, but there are two sets of devices more than other curved surface printing machines. It is different from that when printing unconventional or large taper objects, and when there are utensils with handles, special micro auxiliary runner and probe rod inner diameter telescopic runner are added. ① The special micro auxiliary runner is designed for printing objects with a diameter of 0.8 ~ 2cm (such as craft chopsticks, ball point pen shell, brush holder, glass test tube, etc.)

② the probe rod type inner diameter telescopic runner is specially designed for objects with large taper that cannot be printed normally by relying on the four point support of the outer mirror, as well as substrates with handles (such as ceramic teacups, enamel teapots, stainless steel fast food cups, etc.). When rotating, the device is light and stable, and can also be freely adjusted according to the inner diameter of the substrate. It belongs to the six point support of the inner cavity, and the telescopic adjustable rotary rolling completes the printing. During the operation of scraping during formal printing, the regular positioning of the workpiece is the same as that of overprint and conventional curved surface printing machines. 5、 At present, the action principle of curved surface printing machinery is mostly friction transmission, that is, during formal printing, the scraper is used to work to press, and the pressure makes the font graphics or specific patterns on the plate in line to surface contact with the substrate (that is, we often say the imprint line), and then the plate moves forward in parallel and drives the substrate to rotate. At this time, the scraper scrapes past, Transfer the ink to complete printing. It should be noted that: ① before formal printing, the font or specific pattern in the forming plate cannot be contacted with the substrate temporarily, and a distance of 2 ~ 3mm (that is, a gap) should be left; ② As we all know, printing flat objects is much easier than printing curved surfaces, but there is not much difference between curved surfaces and flat surfaces in printing principle, but the process is a little more difficult. 6、 Postscript

when printing curved surfaces, there are many styles and complex processes, which requires printers to have a solid printing foundation and rich practical experience, and adopt flexible printing methods or methods for objects of different shapes to assist the smooth completion of curved surface printing. As long as practitioners master the process principle of curved surface printing, constantly explore in practice, use their brains, understand with heart, be realistic and innovative, and accumulate experience, they will be able to print beautiful images, characters or graphics with bright colors to meet the requirements of our customers

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