A4 Paper Machine
This is A4 Paper Making Machine,writing and printing paper making machine.
According to the different paper grade and working speed, this kind of paper machine is needed to select the way of papermaking, dewatering structure of press section, dryer cylinder bank, sizing and finishing equipments.
Sheet forming can use the open-type headbox, air-cushion headbox, and hydraulic headbox, gap former and inclined wire former. According to the paper uniformity requirement, it can use distributor roll or finishing surface roll.
Press dewatering type is multi-roll and multi-press nip press rather than large-diameter press. As the low basis weight and wet strength of this kind of paper, it usually makes the low strength wet sheet attached to the felt or guide rolls during each section mutual transferring and full web leading as much as possible.
Dryer section: dryer cylinder group. Paper leading: active or passive paper rope system. Finishing equipment: To choose according to the paper grade requirement.
Now we introduce the technical proposal and structural drawing of Fourdrinier advanced printing paper machine, which we made for Taiqian Minrui Huatong Paper Company in Henan province, China. The advanced printing paper of this company is the famous brand in China.
Trimmed width: 2640mm
Working speed: 400m/min
Basis weight: 50-100g/sq.m.
Headbox: Air-cushion headbox
Forming table length: 15m
Suction flat box with all stainless steel micro-crystal cover.
Press section: four rolls two press nips
The wet sheet is stripped by pick-up suction unit.
The second under press nip rubber blind bottom roll diameter is Φ800mm, with drive unit;
The suction top roll diameter is Φ800mm, with drive unit.
The top press nip is made by a stone roll and a rubber roll. The rubber roll diameter isΦ800mm, with drive unit;
The stone roll diameter is Φ850mm, with cut squirt.
This structure ensures the low strength wet sheet can press smoothly and paper breaks can be reduced.
The smooth press rubber bottom roll diameter is Φ800mm; the top stone roll diameter isΦ850mm. The paper leading roll has the drive unit.
The dryer section has 32 dryer cylinders with the diameter of Φ1800mm, which is divided into five groups: three groups for before-sizing, two groups for after-sizing. The top and bottom felt of first group and the group at the back of sizing machine is equipped with six felt drying cylinder with the diameter of Φ1250mm, which can dry the moisture well and improve the drying efficiency.
The paper leading roll has the drive unit. The paper leading type is three-stage passive paper rope system.
Sizing machine: inclined type surface-sizing machine.
Calender: four roll three press nips; the number is decided by the demands.
Reeler: horizontal pneumatic reeling machine.
If you are interested in our products, please feel free to contact us for more information, we are glad to give you the competitive quotation upon receipt of your detailed requirements.
A4 Paper Making Machine,A4 Paper Machine,Writing And Printing Paper Machine,A4 Copy Paper Making Machine Dandong Tianshin Automatization Technology Co.,Ltd , https://www.tianshinmachine.com
Wire-cutting machine tools belong to the category of electric processing. China is the first country to use wire cutting for industrial production.
The key to wire-cutting machine tools is their accuracy. Because the machine tool is a “working machineâ€, only high-precision machine tools can produce high-precision machinery and further promote the refinement of products. Wire-cutting machine tools as a machine tool, high precision is the industry's constant pursuit of the goal. Although technical capabilities are strong, due to the disconnection from the market and the constraints of the planned economy, the WEDM machines not only have a high failure rate, but also have limited performance (only 50mm thick can be cut, and the efficiency is about 30mm?/min) but anyway This wire-cutting machine is a machine tool unique to China. Although it has a lower accuracy than the wire-cutting machine from abroad, its manufacturing and operating costs are absolutely superior. It is very suitable for those developing countries. It is precisely because of this potential market demand.
Judging from the social environment, China's implementation of the market economy is not a long time. Some small-scale wire-cutting machine tool manufacturing plants are still in the accumulation stage of the original capital. These manufacturers often do not have the entire machine manufacturing capacity, but only assembled production and production. The whole process of quality control is totally unsound, and R&D and innovation are even more impossible. The number of such manufacturers in the eastern part of China is very large, coupled with the immature laws and regulations that China and the market economy are currently supporting, as well as the benefits Driven by the protection of local governments, these unproductive enterprises will continue to survive. From the current status quo, the country’s attitude towards this is naturally eliminated through market competition.
Artificial intelligence is not new anymore, and the future is also an intelligent era. With the development of intelligence, the operators of machine tools at the grass-roots level are facing severe challenges. Machines are used instead of people to do simple tasks. In some industrial production, there are specialized robots. Through the clever design of the robot, it can make it more efficient in the shortest time, and it also pays more attention to the maintenance of robots and related technologies of management, because in simple or complex applications, these are related to The overall cost and availability of industrial robots can only highlight the maximum efficiency of a robot by minimizing the cost of the robot.
For WEDM, it is a greater challenge, especially the development of the functional composite of WEDM and WEDM. The core of the WEDM is to complete the car, milling, drilling and tapping on a machine tool. Various operating procedures such as reaming, reaming and reaming are used to improve the efficiency and machining accuracy of the machine tool and increase the flexibility of production. 
March 12, 2023