As we all know, waste discharge is a very important link in the die-cutting production process of automatic die-cutting machines, which is related to the quality and efficiency of die-cutting. Today, I will share several common waste discharge processes in the die-cutting process of the round knife, including direct waste discharge of auxiliary materials, waste removal of extraction rollers, waste discharge of thimbles, waste discharge of blowing/suction molds, and waste discharge of dropping materials. A waste disposal process. Of course, in addition to these common waste discharge processes, there are also many waste discharge methods, such as changing the bottom material, synchronous winding, etc.
The cutting die design of the auxiliary material direct waste discharge process usually adopts a half-cut die-cut design. After molding, the material tape is peeled off, and the waste remains on the waste discharge tape and is taken away directly. According to the requirements of the product, the waste part is mostly the inner frame of the product.
The extraction roller waste discharge process is more suitable for products with large waste materials. Using this waste discharge process can avoid changing the backing paper, but it is necessary to pay attention to the selection of auxiliary materials, and the quality of the waste discharge tape is very important.
The thimble-type waste discharge round knife is commonly known as thimble knife, thimble waste removal knife, etc., and the smallest waste discharge hole is processed. Its appearance directly affects the small hole waste discharge process of the entire die-cutting industry, making the waste discharge process of die-cut products leap forward. The progress, for the most used waste removal tool. The die-cutting and waste discharge can be carried out at the same time, which can effectively prevent the cut-through waste from being stuck in the knife cavity, thereby damaging the blade or accumulating on the material, resulting in defective products; the thimble-type round knife is easy to use, does not require air source, no noise, and the waste is discharged smoothly. At the same time, it has the effect of protecting the blade. These cutters are ideal for products that are difficult to vent, such as small holes and small gaps.
The blowing type waste discharge round knife is also called the blowing waste removal knife, the air flushing waste discharge round knife. It is a round knife process that blows the waste away from the die-cutting material and the knife cavity through the action of high-pressure air to prevent the waste from being stuck in the knife cavity and discharge the waste. An air guide snap ring is installed on the side of the cutter body to guide the high-pressure air to the corresponding exhaust air hole to blow out the entire row of waste. Generally, it is also used with a suction waste box to better collect the die-cut waste.
The suction knife is connected to the knife body through a high-power suction device, which generates suction to absorb the die-cut product waste on the surface of the knife cavity, and then discharges it with a waste discharge tape, so that some large pieces of waste that are difficult to discharge can be discharged smoothly; suction The waste knife can suck the die-cutting waste of the automatic die-cutting machine into the knife body, and then suck it out from the suction device connected to one end of the shaft head, which has a good effect on saving materials and reducing the damage rate of the knife edge. It has been verified that the waste with a diameter between 3 and 10mm can absorb waste best.
This kind of round knife body is hollowed out in the middle, and through the special processing of the blade, the waste can be stuck in the knife cavity when the automatic die-cutting machine is die-cutting, and automatically squeezed and dropped into the hollowed out knife body one by one, then clear the waste through the waste discharge port opened beside the cutter body. This kind of tool is easy to discharge waste and has no noise, but it has requirements for the shape of the waste, which is generally a regular pattern, such as round holes and square holes for waste discharge.