This production line is mainly composed of automatic cutting machine, automatic welding machine (including external coating), automatic forming and flanging integrated machine, and automatic sealing machine, with stable performance.
1.Automatic cutting machine
Purpose: Cut large tin sheets into the required size (circumference of the can)
Working principle:
Press the conveyor start and start buttons of cutting machine, the conveyor belt and cutting machine work. Turn the manual/automatic knob to the automatic position, and the push claw material on the conveyor chain will send a signal when passing through the circular sensor under the conveyor frame. The vertical cylinder will go down, and the four suction nozzles installed on the bracket will press the iron sheet. The vacuum generator will work, and the vertical cylinder will go up. After the iron sheet is lifted up by the suction nozzle, the iron sheet will be sent to the conveyor belt under the drive of the belt. Under the joint action of the conveyor belt and the pushing claw, the material is transported to the circular knife cutting component for shearing, and the cut strip is collected on the receiving frame; At the same time, the horizontal cylinder retreats to its starting position, and the next pushing claw sends a signal and repeats the suction and feeding actions, thus continuously working. When the number of iron sheets decreases (i.e. the height of the iron sheet decreases) and the limit travel switch cannot be operated, the lifting motor starts the material rack to rise. Raise to the required height and repeat the above action in a circular motion until the material rack iron sheet is used up.
2.Automatic welding machine
Purpose: Mainly used for automatic round forming and automatic welding of cans.
Working principle:
When the material of the can body is rolled into a circular shape and delivered to a certain position on the welding machine’s guide rail, the left and right push claws move repeatedly to feed it between the upper and lower welding rollers. The front of the can body reaches the photoelectric switch installed on the forming gate, which sends a front-end signal to the programmable controller (PLC). The PLC controls the main transmission through a program to delay the clutch. When the front of the can body enters between the upper and lower welding rollers, it is first welded with a small current, Then switch to high current welding, and then switch to low current welding at the back end (at this time, the back end of the tank has left the detection photoelectric switch). When the tank body is welded and left the upper and lower welding rollers, the welding current automatically turns off, the main transmission mechanism brakes, and the upper and lower welding rollers also stop rotating at the same time.
Throughout the entire process, the movement of the upper and lower welding rollers is driven by a dedicated copper wire that is compressed into a flat shape by a flattening mechanism, bypassing the grooves of the upper and lower welding rollers, and driven by multiple groove wheels. The copper wire takes the can body out of the space between the upper and lower welding rollers at a predetermined operating speed, playing an indirect driving role. The copper wire serves as an intermediate electrode during the welding process and adheres the melted coating on the plate to the contact surface (this adhesive is very harmful to welding), And take away the heat generated during welding. Due to the fact that the material being welded always comes into contact with fresh copper wire, a clean and aesthetically pleasing weld seam is provided. The copper wire, which has been utilized on both sides, is cut and recycled by the cutting mechanism under the traction of a heavy hammer.
3.Automatic forming and flanging integrated machine
Purpose: Mainly used for welding seam positioning, square forming, upper and lower flanging
Technological process：
Chain can feeding → Clamping and positioning can feeding → Rotating weld seam positioning → Holding can positioning → Square/rectangle forming action → Completing the square/rectangle forming action → Holding can lowering → Upward flanging and holding can raising → Upward flanging action completion→ Upward flanging and holding can lowering → Downward flanging and pressing can lowering → Downward flanging action → Downward flanging action completion → Downward flanging and pressing can raising → Action completion.
4.Automatic sealing/seaming machine
Purpose: It is mainly used for sealing cans, firmly combining the can body and lid to form a container
Technological process:
Chain can feeding → Clamping positioning can feeding → Lower cover device feeding cover/lid → Lifting action of can supporting → Lowering action of can supporting → Completion of can sealing action → Clamping positioning can feeding → Completion of action.
Post time: Apr-20-2023