Printing equipment mainly consists of paper feeding device, printing device, paper receiving device and other devices. The following is a detailed introduction to the printing characteristics of the four major classifications of equipment. Feeder device is installed, continuous supply and replacement of the web device, including: web support device, paper device, paper receiving device (sheet, roll)
a. Web support device is mostly used in the form of the center of the web support:
(1) roll support with the mandrel
1) cone-type mandrel.
② Expansion type mandrel. (2) no mandrel support device. Mainly used in large printing presses.
(3) Arbor support seat.
b. Paper loading device, the printing process, the diameter of the web is gradually reduced until it is necessary to replace the new web.
(1) the form of the paper loading arm. According to the number of rolls of paper can be installed on the paper device, can be divided into three forms, namely, single-armed, double-armed and three-armed
(2) pneumatic paper mechanism. Pneumatic paper mechanism to compressed air as the driving force, through the pneumatic device to drive the paper arm to realize the lifting and landing of the paper arm
3 electric paper mechanism. This mechanism consists of motors and mechanical transmission devices
c. The use of web for long live printing, not only requires no downtime to replace the web, but also in the new, the old paper tape under the conditions of the speed of the sticking good to complete the whole process of changing the paper, for this reason, the general setup of the non-stop automatic paper receiving device. Web printing machine receiving system refers to the printed paper tape for rewinding or folding, collection system, including drying and cooling devices, rewinding devices, folding devices (paper, rewinding, inline processing)
a. Drying, cooling devices.
⒈ drying device
(1) high-speed hot-air drying device
Traditionally used to electrically heat the air and then sent by the fan to the printed matter. But the popularity of the use of heat pump technology, you can realize the proportion of energy saving 60% -90%.
(2) flame drying device
(3) flame - hot air and drying device
2. Cooling device. Paper tape in the drying device at the exit of the surface temperature often up to 120 ~ 180C, which requires the surface of the paper tape cooling, for this reason, there is no cooling device behind the drying device; cooling device generally consists of 2 ~ 3 hollow cooling rollers, and cooling water circulation system connected
b. Rewinding device, in the printing of flexible packaging materials, after multi-color printing, drying and cooling often need to print the finished paper tape rewinding, which is a good idea, but not a good idea, it is not necessary. The paper tape rewinding, which requires the installation of rewinding device.
c. Folding device is a web printing machine will be printed on the paper tape cutting, folding device. Technical management is the production process of all technical activities, in accordance with the characteristics and laws of production technology itself, in accordance with the current technical policies, planned, purposeful scientific management.
The basic task of technical management is: to establish the necessary working order for the technical activities, establish and improve the technical management system, carry out scientific research, and actively promote and adopt new technologies, new techniques, new materials, transformation of existing technology and equipment, and constantly explore potential, innovation, transformation, in order to improve the modernization level of the printing plant; for a reasonable and efficient organization of production, to provide a reliable basis for technical, including product design, process plan and folding device. Including product design, process programs and a variety of technical documents; at the same time, to provide technical assurance for safe production.
Technical management of the main content: the development of science and technology and plant potential, innovation, transformation plan, development and implementation of process management, quality management, equipment management, production and technology-related provisions and responsibility. Scientific research and technical intelligence information collection and management, technical innovation and the introduction of new technologies, new equipment management, technical files and technical data management, as well as technical education, training and assessment of employees.
Technical management should have professional and technical personnel to be responsible for, to set up special institutions, to apply modern scientific methods. Equipment management to ensure that all kinds of equipment at any time in good condition, improve the effectiveness of equipment, so as to ensure the normal production.
The main tasks of equipment management are: according to the principle of technically advanced, economically rational, the correct purchase of equipment; to ensure that machinery and equipment are always in the best technical condition; as soon as possible to master the introduction of equipment repair, maintenance technology, do a good job in the procurement and supply of spare parts and so on, to ensure that the normal operation of the equipment; the development of relevant equipment maintenance and repair system, and supervise the implementation of the establishment of the equipment maintenance File, etc.
Additionally, the rational use of equipment is also an important element of equipment management, only a reasonable arrangement of production, in order to give full play to the role of equipment. Both can get the best economic effect, but also can reduce the wear and tear of the equipment, extend the service life of the equipment, get a long-term, stable, greater benefits.