Some Considerations When Buying Used Printing Machines

Because some packaging companies have limited funds, they can only buy second-hand printing presses, and they can meet the production needs of the company through transformation and repair. In recent years, Changsha's packaging companies have introduced six sets of color press used equipment, which has indeed achieved a multiplier effect.
In recent years, China's printing and packaging industry has introduced many foreign used equipment, most of which are multi-color offset printing machines. There are hundreds of manufacturers of used offset presses. Users mainly purchase from domestic business units, followed by direct purchases from foreign businessmen. According to incomplete regulations, there are currently more than 30 companies in the country that are directly refurbishing and operating second-hand offset presses, not including intermediate sales units. Most of the users who use the second mobile phone are satisfied, but there are also unsatisfactory conditions. So how to avoid buying two mobile phone mistakes? The author engaged in the packaging industry management for many years to explore the following points for reference.
One should pay attention to the brand of the second mobile phone. To purchase used printing presses, we must first fully understand the quality, equipment performance and stability of offset presses produced by companies in the world. This is the basic premise. If the new equipment has not been used for a long period of time, such as printing failures such as blanking or misprinting, etc., these machines cannot be included in the scope of purchase.
The second is to find out the original country or region of the second mobile phone. This is one of the factors that determine the quality and price of the second handset. Machines of the same brand, model, and production at the same time will have a direct impact on the quality of the second mobile phone due to differences in the technical quality, maintenance level, and workload of the user who uses the machine. The price will also vary.
The third is to ask the second cell phone you want to purchase, whether it is printed or thin paper, whether it is consistent with your role. In general, the original is printed paper, you can use to print thin paper, can also be adjusted to print paper jams (speed to reduce). If the original long-term printing paper, you can only use to print cardboard, can not print thin paper. Otherwise it is easy to produce overprint and Other printing failures. Roland 700 series is another matter.
The fourth is to understand the year of production of the equipment and the total number of prints, not to "color" on the price. The year of production of the device and the total number of impressions are one of the factors that explain the quality of the second mobile phone under normal use conditions. With the same type of equipment, the production of the early and late times can basically explain the advanced nature and completeness of the equipment; and the total number of prints can explain the size of its remaining use value.
The fifth is to understand the reputation and ability of operating second-hand equipment units. Because the unit directly engaged in the operation of the second mobile phone has four kinds of system: national, joint venture, collective, and private. In the technical level can be divided into two categories: one is superb technology and perfect after-sales service, after its refurbishment of the second mobile phone, in the mechanical accuracy and print quality than the original user transfer to a different degree of improvement, to solve After many years of use, problems arise, and there is an internal corporate standard. He provides perfect after-sales technical services and can guarantee the supply of Spare parts in the future; another type of technical force is lacking. Its so-called renovation is nothing more than re-assembly after being dismantled. Only improved the appearance quality of the second mobile phone, technical services are not perfect. Therefore, users can make choices based on their technical capabilities, quality status and price of the two mobile phones after comprehensive analysis.
Sixth, it is an inspection of the second mobile phone to listen, see, touch, and measure. Listening, that is, through human hearing, listens to the harmony of the operating sound of the two mobile phones in the three states of idle operation, clutching and pressing pressure, and pressing. If there is an abnormal sound in a certain part, whether it is periodic or non-periodic impact sound, it means that the problems existing in the original second mobile phone have not been solved in the refurbishment, and the reason must be solved. Otherwise it will affect the normal use in the future.
Look, that is, through the human visual inspection equipment appearance and whether the parts are operating or leaking oil. Look at the action of each component, such as the outlet roller, the ink roller, and the water receiving and ink receiving, etc., to see if the action is normal and effective. Look at the function that the machine itself should have, such as powder spraying, and whether the axial flow fan is working properly. See if the auxiliary accessories of the machine are available. Complete and so on.
Touch, that is, through the feel of the human impression of the impression roller relative to the paper after dragging slightly whether there are dents or man-made damage, touch the vibration of the machine, hand feels when the machine is moving and feel.
Measurement, that is, with the help of test tools on the machine to measure the mechanical precision of the main drum assembly, such as the left, center, right three radial runout and axial turbulence. Measuring the accuracy of repeated overlays and visual inspection of full-page printing with water bars and ink bars. In general, the printing industry purchases two mobile phones for printing on the cable screen. Therefore, our testing requirements for the second mobile phone can be based on the national standards of China's offset printing industry.
Seven should pay attention to the integrity of data and special tools. The purchase of the second mobile phone must require the supplier to provide random technical documents, such as operating instructions (operating manual) and atlas. The former is the operator's correct use of the machine reference, and the latter is an indispensable basis for the purchase of various accessories. When the factory number and production year of the machine are reported, the number of the zero and department (unit) parts can be accurately reported by means of the atlas. Without an atlas, you will find it difficult to get the spare parts you need. Special tools are essential for operational adjustment or routine maintenance.
To purchase the ideal second-hand printing equipment, users can comprehensively consider the above aspects, and then combine their own experience and information to make judgments, which can completely avoid mistakes.
In another case, the user directly imports the second mobile phone from a foreign company or a representative business. In this case, ask whether the mobile phone has been overhauled or if it needs refurbishment. If it is refurbished or used after renovation, I think it is safer to buy from the domestic market. It can be considered if the equipment is good and it can be used without refurbishment. Since the direct introduction of its future services is not very convenient, it is better to invite talents of the type of integrated trade and commerce to participate in the negotiation. I hereby make the following suggestions for my colleagues:
1. With regard to the technical performance of the two mobile phones, the supplier is requested to provide information and data and select according to the principles of quality and low price.
2. The parties outside the contract sign a supplementary agreement equivalent to the contract. Content should include: A machine manufacturer, factory number, year of production, original country or region of use, total number of prints. B second mobile phone with ancillary equipment (static eliminator, dusting device, etc.) and wetting methods. C machine problems. D acceptance of the second mobile phone printing quality indicators and failure to achieve acceptance criteria. The percentage of the machine that is paid after the E machine is accepted. F. What is the period of the Three Guarantees and which party is responsible for installation and commissioning?
According to many previous examples, some organizations have taken sloppy considerations when introducing second-hand equipment, and have had sequelae. When resorting to courtrooms, apart from the lack of other written basis for price contracts, they can only struggle between buyers and sellers. In the end, they really lose money. Or the interests of users.
Everything is divided into two, users use different mobile phones for different purposes, the two mobile phone printing accuracy requirements are not the same, the price difference is quite disparity. Buying the second mobile phone suitable for your product at the most economical and reasonable price is our basic principle.
Guangdong Hong Kong Packaging Weekly

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