Layout and planning of the installation and commissioning of offset presses
Before the machine enters the factory, it should be installed, commissioned, and accepted by technical personnel, mechanics, electricians, and operators, and carefully read the relevant information about the machine installation provided by the manufacturer to understand the weight, length, width, and height of the machine. Technical parameters, combined with the actual situation of the workshop, reasonably choose the installation location and consider the basic requirements of the printing process: easy production management, favorable operation, safe production, but also consider the stacking of finished products and semi-finished products, the operator's tour aisle, Machine maintenance space, fire exits, and ventilation, lighting, and pipeline locations during normal printing.
Read the instruction manual of the offset press
Operators and maintainers must carefully read and fully understand the contents of the instruction manual before using or maintaining the offset press. The purpose of reading the instruction manual of the offset press is to enable the user and the maintainer to be targeted and do more with less effort, to avoid blindness and wrong operation .
The instruction manual is generally divided into: safety precautions, such as: equipment safety device and location, operation precautions, etc. In addition, the machine's overall drawing installation and operation guide (preparation and basic operation) are also attached. The instruction manual details the adjustment and use of the registration device, printing device, ink delivery device, water supply device, and paper delivery device, so before operation It is a very important job to read the instruction manual carefully.
Two determine the seat
The following aspects should be considered when determining the aircraft location:
The first thing to consider is the footprint of the machine. Secondly, we must consider the development trend of the printing enterprise, leaving room for installation of the equipment to be added in the future, the positioning of the machine should meet the needs of the production process, and we must consider: the feeding, semi-finished products, and the stacking position of the finished products. Generally, a multi-color offset printing machine For materials, semi-finished products and finished products, 50 square meters to 70 square meters should be reserved. For multi-color offset presses that specialize in printing cardboard, a larger area should be reserved, otherwise the product cannot be turned around. There are also reservations for the location of auxiliary equipment: such as computer consoles and sample stands, water tanks, electric boxes, air pumps, vertical cabinets and fire and transportation channels, if they are automatic or semi-automatic offset printing machines, they should also be set aside for bending Machine place. For sheet-fed offset presses, the height of the plant should be no less than 3.5 meters. In addition to the height of the machine, the height of the packing chassis, the height of the rolling steel tube (or the height of the 88-carriage), and the gantry The height of the rack and the height of the hoist, etc., the optimal height of the plant is 4 meters to 4.2 meters. If the height of the plant is less than 3.5 meters, trouble will occur when the new equipment is lifted in place or apart . The height of the web offset press should be determined according to the height of the machine. At least 2 meters away from the wall at the paper-receiving part, the distance of the paper-feeding part from the wall depends on whether the machine has pre-loaded paper equipment. The determination of the seats should also be beautiful and generous. This is like renovating a house and placing furniture. It must have a strong visual impact and make people feel particularly comfortable.
[Case 10-1]
A large printing company purchased a new Heidelberg 6 + LX, which was installed at the right hand window of the workshop. Because the cabinet and distribution box were installed on the left side of the machine, blocking the appearance of the machine, people walked into the workshop , I can't feel the style of the latest model of 6 + LX.
[Expert Tips]
Such a large-scale high-end offset press machine position is determined, we must investigate and organize experts to demonstrate.
Arrangement of three attachments
The distribution box of the offset printing machine is generally installed on the transmission side of the machine near the paper feeder, so that the path of the circuit is the shortest. The computer table is placed on the paper receiving part near the transmission surface. This arrangement is conducive to the direction of the wires of the computer console. The vertical cabinet water tank and vertical cabinet central air pump are placed in the center of the machine transmission surface, which is conducive to the installation of the air pipe and wiring. The automatic or semi-automatic plate bending machine is best placed near the computer table. Before the new printing plate is put on the machine, the ink level is pre-adjusted on the computer table, then the plate is bent, and finally the machine is put on. This arrangement is more reasonable. The outlet of the water pipe is arranged near the water tank, and it is possible to make a dark pipe (pre-buried) if possible, and reserve a sewer near the position of the water tank to facilitate the cleaning of the water tank. 220-volt and 36-volt power supplies must be pre-buried in the wall for use in equipment maintenance. If there is a central air supply, leave an air supply port in the machine's paper collection, paper feeder position and middle for easy maintenance.
Four foundation preparations
Offset presses belong to the category of precision instruments in terms of equipment installation accuracy requirements, and have higher requirements on floor bearing capacity and flatness. The quality of the floor foundation directly affects the equipment installation accuracy, product quality and equipment service life. The standard configuration of the four-color machine weighs about 30 to 35 tons, the bearing capacity of the foundation (dynamic load factor 1.2) should not be less than 25 kPa, and the ground flatness error should not be greater than five ten thousandths.
In the early stage of foundation preparation, the foundation soil quality of the storage equipment needs to be inspected. If there are conditions, the exploration department should be asked to analyze the soil quality and provide comments. For areas with loose soil, compaction grouting and grouting can be used. The specific construction plan depends on the soil quality.
The usual construction method for places with better soil quality is: dig out a 600 mm layer of soil at the location where the equipment is stored, first lay a layer of stones, then tie two layers of steel on it, and pour 500 mm thick concrete (concrete label C25) and then do the cover layer and water mill layer (Figure 10-1).
(Figure 10-1 Sectional drawing of foundation construction)
After the concrete is poured, a certain curing period is required. The time depends on the concrete label and the climate. The general time is 21 to 30 days. After the foundation is completed, the cutting groove is used along the interface to reduce peripheral equipment and concrete expansion to the ground. If possible, it is better to press the corresponding weight items on the prepared foundation before storing the equipment, if possible, the effect will be better.
When pouring foundations, cable trenches, pre-buried pipelines and oil drainage trenches should also be taken into account to avoid re-excavation or unnecessary open lines. If there are steam hammers, air compressors or other equipment with vibration impact on the foundation near the workshop, add anti-vibration grooves around the foundation. Generally, the anti-vibration groove is about 100 mm wide and the same depth as the foundation, filled with sawdust or white ballast.
Five preparatory work before installation
Before installing the offset press, we must make the necessary preliminary preparations, mainly in the following aspects, taking the sheet-fed offset press as an example:
1. Power supply: proceed according to the power determined by the installation instructions. If the multi-color offset press uses electric heating, UV (ultraviolet), IR (infrared) drying devices, the power consumption required will be designed separately. The specific data should be arranged according to the reference data provided in the instruction manual, and Meet the safety requirements of electrical appliances.
2. The location of the distribution box: it should be close to the entrance of the electrical control box of the offset press, and at the same time, safety, power supply and separation, and convenient maintenance should also be considered. Set in the electric box: fuse plug and fuse holder, air switch, lighting switch, low voltage lamp, power supply, single-phase power supply, etc. The fuse current value of the fuse plug should be determined according to the power of the electrical device.
3. The work of pre-buried pipes: This is a very important work. Generally speaking, the control box of offset printing is mostly placed on the transmission surface of the paper conveyor. When making the foundation, the pipes are pre-buried. The steel pipe should be selected according to the wire diameter. The cross-section and the number are determined.
4. Auxiliary device: lighting needs to have sufficient brightness; proper ventilation and ventilation fans should be arranged for ventilation to keep the workshop air discharged; low-pressure lamps should generally be equipped with sockets according to actual needs, and the air conditioner should arrange central air conditioning or several units according to the area of ​​the plant Body air conditioning.
5. Pre-embedded water supply pipe and drain pipe: For multi-color offset presses, the general water supply outlet is on the transmission surface (outward), the water consumption is not large, and the steel pipe with a diameter of 18 mm or 12.5 mm can be used for water supply. However, it is necessary to ensure continuous water. Once the water cut-off time is too long, it will cause the failure of the freezing system of the wetting system, resulting in water shortage and water temperature rise, which directly affects the quality of the product. The diameter of the drain pipe is not less than 32 mm. When doing the foundation construction, the rationality of the pre-buried supply and drain pipes must also be considered.
Because of its comfort and practicability, it is an ideal choice for flying; you can integrate and twist it in multiple positions and control its tightness around your neck. The design is very suitable for providing all-round support when sleeping upright, avoiding neck stiffness, suitable for a variety of travel forms - automobiles, trains or buses;
Perfect Home Choice - This specially designed product is designed to relax head and neck muscles while watching TV or reading, and to provide head stabilization for people who have difficulty lifting their heads and need to support or sleep upright.
It is also very suitable for children, because its unique design allows children to have a sense of comfort and security, while preventing children from falling forward and sideways, especially when riding in a car; please note that it is not a safety device, just for comfort; when using, do not leave children unattended;
Lightweight, easy to carry; can be fastened to the side of the handbag with a clasp, or easily pressed into the handbag; durable, can be partially cleaned;
Genuine promises: All our products, quality assurance, please rest assured to
purchase orders.
About
the delivery date: We
have a strong team to serve you, to ensure that customers order the delivery
date.
About
packing: We
use punched plastic bags to prevent children from danger. The material of
plastic bags can be provided by customers. We can produce them as required.
Cartons, colour boxes and other packages can be customized according to
customers'requirements.
After-sale
service:If there are any quality problems in our products, we
can unconditionally replace them.
The company's products with environmental protection materials, excellent
workmanship, all kinds of supporting facilities, advanced technology, perfect
management, excellent quality, reasonable price, rapid development, strict
confidentiality, complete after-sales service. Only detailed product drawings
(or samples) are required to provide customers with one-stop service from
development to after-sales service.
Map customization:We have professional designers who can design according to your requirements. You only need to provide pictures of toys (physical objects or floor plans) to customize the products you want.
Travel Pillow,Traveling Neck Pillow,Travel Neck Inflatable Pillow,Fashion Travel Pillow
SHEN ZHEN HAO XIAN LONG TECHNOLGY.CO.,LTD , https://www.haoxianlongtoys.com