Introduction of Heidelberg Printing Machinery
Heidelberg presses have a long history in China, so second-hand Heidelberg presses have a large influence and their sales are also large in China. In the mid-1990s, Heidelberg changed the traditional rotary paper delivery mechanism used for second-hand printing presses second-hand Heidelberg folio and used printing presses second-hand Heidelberg four-start to hem-style paper delivery ...
Almost everyone in the printing industry knows these six brands of used printing machines: used Heidelberg printing machines, used Roland printing machines, used KBA printing machines, used Mitsubishi printing machines, used Komori printing machines, used Akiyama printing machines, and so on. Of course, there are other brands of second-hand printing machines such as Shinohara and Sakurai. Due to space limitations, this article only discusses the first six brands of printing presses. It is also a large second-hand printing press in China. In the mid-1990s, second-hand Heidelberg changed the traditional rotary paper delivery mechanism used on its folio and quadruplet to a hem-style paper delivery mechanism. Its machine speed can reach more than 15,000 rpm. Compared with other machines, Heidelberg's hem-type paper transfer mechanism is a conjugate cam mechanism that uses a cam swing lever directly (relatively simpler than other mechanisms), and the opening and closing mechanism uses a cam-driven shift fork structure. Both structures are unique.
Another special place is that the traditional roller in the middle uses a triple diameter structure. This structure increases the distance between the units and increases the operating space. The relative processing difficulty of the triple-diameter roller is much greater than that of the double-diameter roller, and installation and commissioning are relatively difficult. The new H105 changes its triple-diameter roller to a double-diameter roller, and the machine speed can reach 18000 rpm (H105 is a wide-format printing equipment introduced by Heidelberg. It has a comparative advantage over H102 , Strong ability to adapt to prints, especially suitable for packaging printing. Its paper feeding part adopts a unique blower type, which can maintain good transmission characteristics according to different substrates). From the general trend, there are more double-diameter structures used in paper transfer rollers. Second-hand Heidelberg's off-pressing machine has always adopted a three-point suspension structure. This structure can play a role in safety protection, but it has a louder off-pressing sound at high speeds.
The PM52 launched by Heidelberg in the past two years is a product between GTO52 and SM52. The degree of automation of this product is between the two, but the price is moderate. The structure of second-hand Heidelberg Feida is relatively simple. Although it has been improved in the past two years, the adaptability of thin paper is generally weaker. The new Heidelberg SM52 can be equipped with a roller die-cutting device, which integrates printing and die-cutting, which greatly improves printing efficiency. Currently CP2000 is a representative work of Heidelberg, which is characterized by easy operation, two people can complete the operation, which not only improves efficiency but also reduces costs. It uses a pull gauge, a push gauge, one for thin paper and one for thick paper, so its printing adaptability is also relatively wide. Another representative product of second-hand Heidelberg presses is double-sided printing. The printing equipment of this structure has multiple sets (l + 10 + 2, l + 40 + 5, 4 + 4), which provides users with choices. Convenient, one-sided printing can complete double-sided monochrome or multi-color printing. However, the problem that this product currently faces in the domestic market is that the maintenance of the flipped part is more troublesome. In theory, the current structure does need to be further improved and improved in technology.