High-Speed Can Manufacturing: Optimizing the Cutting Process The main production process of food three-piece cans includes shearing, welding, welding seam filling and drying, necking, flanging, beading, seaming, leak detection, internal coating and dryin

High-Speed Can Manufacturing: Optimizing the Cutting Process

The main production process of food three-piece cans includes shearing, welding, welding seam filling and drying, necking, flanging, beading, seaming, leak detection, internal coating and drying, and packaging. Currently in China, the automatic can production line consists of can body combination machine, two-way cutting machine, welding machine, welding seam protection filling/curing system, internal coating/curing system (optional), online leak detection machine, empty can stacking machine, strapping machine, and film wrapping/heat shrinking machine.

At the current stage, the can body combination machine can complete the cutting, necking, expanding, flanging, beading, first sealing, and second sealing processes, with a speed of up to 1200 cans/min. Today, we will analyze the cutting process:

l Cutting:

The cutting process is suitable for the high-speed production of short can types, such as the 539 can type, which can achieve a can-making speed of 1200 cans/min. In the past, due to the limitations of the welding machine scribing station and the cutting process itself, it was possible for the cutting line to not completely coincide with the pre-scribed line, and the cutting edge could produce inner and outer "bell-mouth" shapes, affecting the quality of necking and flanging. Currently, with the pre-positioned bearing scribing station and the adoption of a middle feeding method by the welding machine, with axial ball bearing positioning guides installed on both sides and adjustable scribing depth, the cutting process uses internal and external rotation for cutting, thereby improving the cutting quality to a new level, fully meeting the requirements of high-speed and high-quality can making.