Reasons that affect the die cutting accuracy of the flat die cutting machine
In flat die cutting, die cutting speed and precision are important technical indicators to measure the function of machinery and equipment. The precision of die cutting directly determines the production quality of the product, and the speed determines the production efficiency. There is a mutually restrictive connection between the two. At present, the die cutting accuracy of the fully automatic flat die cutting machine produced in China can be controlled within 0.15mm, and some can even be controlled within 0.09mm. However, with the use of machinery and equipment, the accuracy will gradually decrease, and now the common problems affecting die cutting accuracy are summarized as follows.
Reasons why Feida paper feed affects die cutting accuracy
At present, the continuous paper feeding method is widely used at home and abroad. Most of the Feida power is controlled by the electromagnetic clutch and driven by the chain. The power driven air distribution valve distributes the vacuum in different logical time periods, and then completes the vacuum release of the paper separation nozzle and the paper transfer nozzle. After the air distribution valve is used for a period of time, due to factors such as dust and wear, the air distribution logic time error will be formed, and then the accuracy of paper feeding will be affected. Therefore, after using for a period of time, it must be removed and cleaned with alcohol. Nowadays, the automatic die cutting machine has excellent paper feeding detection. If the paper has a large error, the detection equipment will actively alarm and then stop. However, for some packaged goods with particularly high precision requirements, this is also a factor that affects repeated errors. In addition, some chain transmission errors in paper feeding and mechanical wear of cams will cause repeated errors. These errors are usually small, but they are not easy to find. Then affect the die cutting accuracy and production efficiency.
The reason why the front gauge inspection affects the die cutting accuracy
At present, the front inspection of die cutting machines produced in China usually adopts electronic eye detection. The electronic eye passes the detected signal through the amplifier and transmits it to the PLC. After the PLC data is processed, the execution order is announced. Four electronic eyes are installed in the front regulation department. According to the different paper standards, two are usually used together. The front regulation detection is a preventive detection for paper feeding errors. If the front regulation detection fails, it will lead to the production of waste products. The front gauge inspection should always be cleaned with a dry cloth dipped in alcohol. When replacing the front gauge sensor, a 0.1mm 0.2mm feeler gauge is usually used to test the equipment to ensure that the position of the equipment can be effectively detected.
The reasons why the front and rear positioning blocks affect the die cutting accuracy
The front and rear positioning blocks determine the number of grippers in the gripper row and the positioning of the paper. The front and rear positioning blocks, which have the effect of positioning the gripper row, have excellent strength and stability to ensure that each group of teeth rows are positioned at the same front and rear positioning points. Some of the front and rear positioning blocks are made of nylon, and some are made of steel. Fine tuning the action organization of the positioning block can complete the clearance adjustment of the gripper row, and then ensure the repeatability of the product die cutting. After the machine runs for a period of time, the chain, tooth row, etc. will be deformed. Many manufacturers describe the adjustment organization on the tooth row. By adjusting the positioning position of a single tooth row and positioning block, and changing the gap between the bites of the paper, the adjustment of the accuracy of a single tooth row is completed.
The reasons why the side positioning of the tooth row affects the precision of die cutting
The positioning tissue on the side of the tooth row usually selects one side for fixed positioning and one side for movable positioning. In order to improve the side accuracy, the fixed positioning side of the tooth row is close to the fixed side positioning plate, so that there is no gap under the effect of the movable side positioning compression spring. If there are other factors such as lack of pressure on the positioning spring on the movable side or wear on the fixed positioning plate, there is a gap between the tooth row and the positioning plate after the tooth row is close to the positioning plate on the fixed side, and lateral accuracy will be formed. , or bronzing products with a set position, this is a common problem of accuracy. When this problem occurs, it is usually necessary to replace the positioning device on the tooth row or the tooth row. The most convenient method in practical production is to pass a single tooth. The correction of the row completes the correction of the accuracy of the side positioning.
The above are basically problems that are often encountered and can be easily solved. There are many reasons that affect the accuracy of die cutting, such as intermittent structure, turbine worm structure, chain, etc., which basically require large repairs to solve.
Shandong Lukes Machinery is one of the leading brands of flat bed die cutting machines in China. It has a professional technical team and after sales service personnel. Customers are located in dozens of countries around the world, and some countries have agents. I have competitive prices and great service.
