Automatic neck-in drum production line

The production line is suitable for the automatic production of 10 liters to 25 liters’conical drum. total power: approx.100KW,total floor space: 250㎡ .total length:approx.36 meters. total manpower: 4-5 people. Production capacity: 28-30cpm. Drum height range: 170-460mm. Drum diameter range：200-300mm

Technical flow: cutting the tin sheet to blank—rounding—welding—inner and outer coating (inner powder coating and outer coating)—drying—cooling conveying—conical expanding-flanging-beading-bottom lid feeding-seaming-turning over-top lid feeding-seaming-leak testing-packaging

First place the cut can body materials into the automatic resistance welding machine’s feeding table, Suck by the vacuum suckers,send the tin blanks to the feeding roller one by one.through the feeding roller, the single tin blank is fed to the rounding roller to conduct rounding process, then it will be fed to the rounding forming mechanism to make rounding.The body is fed into the resistance welding machine and make welding after the accurate positioning. After welding, the can body is automatically fed into the rotary magnetic conveyor of the coating machine for outer coating, inner coating or inner powder coating, Which depends on customer’s various need.It is mainly used to prevent the side welding seam line from being exposed in air and rusting.The can body should be placed in induction drying oven to dry if it’s inner coating or inner powder coating.Afer drying, It will be fed to cooling device to make natural cooling.The cooled can body is then fed to the conical drum combination machine, and the can body is in an upright state going through the uprighting conveyor.The first operation is the can body conical expansion. When the can body is in position, on the can body lifting tray which is controlled by a servo motor, and the can body is sent by this lifting tray to the conical expanding mold to make conical expanding. Step 2 is upper and lower flanging.The step 3 is carried out if the bottom is required to make triple seaming,making the further more flanging amount of the bottom: The upper mold is fixed on the machine body, and the lower mold, which is mounted on the CAM, completes the upper and lower flanging when the CAM is jacked up. The step 4 is beading. After completing the above four steps, the conveyor belt will send the can body to the sealing machine. When the bottom lid auto feeder detects the can body coming, It will automatically feed one bottom lid to the top of the can body,and then both the can body and the bottom lid will be clamped to seaming machine head to make auto seaming.After bottom seaming, the can will be reversed up and down by reversing device,and then make top seaming,this process is the same as the bottom seaming process.Lastly,the finished can is fed by conveyor to automatic leak tester station.After accurate air source inspection, unqualified products are detected and pushed to a fixed area, and qualified products will come to the packaging workbench for the final packaging process.