Forming tool for food container cap
We have recently received a new project from one of our customers. We were to re-engineer their existing 2 cavities stamping tool, which is similar to a compound tool. It is designed with a cut and form operation within a single hit. The tool is running on a customized OBI press with an incline angle of 30 degrees and runs at the speed of 200 SPM. The unique part of this tool is that all ejections are done by pneumatic action instead of spring action.
This tool produces a circular container cap. The cap is designed with a special profile formed in the center of the cap to indicate that the food being contained is still in good quality. Under all circumstances, the formed profile should be in a downward position, meaning, a vacuum should be inside the container. Once there is a leak in the container, the formed profile will return to it original position, (upward) indicating that the food contained was spoilt or contaminated and should not be consumed.
In the diagram below showing how the tool is looks like. Compressed air is applied from the top of the center rod and the bottom piston.
Bottom piston pushes the part upward. Stripper activated by compressed air to eject the strip and air suck from the center rob to keep the part at the punch side after cut and formed.
When the machine ram return to it top position, the suction is cut off and the center rob hit the ejector rob and eject the part out from the punch.
Please kindly be reminded that, the tool design and concept is patented, it should not be copied to avoid patents infringement.
很有创意，学习了！