Cushioning mechanism, heat sealing device, and film wrapping machine

A cushioning mechanism comprising:

• a leading cylinder;
• an elastic unit being elastically deformable under compression;
• a first cushioning plate rotating synchronously with the leading cylinder;
• a second cushioning plate;
• and
• at least one cushioning component having
• a cushioning groove having
• a first groove wall located on one of two opposite sides of the cushioning groove and extending from a bottom of the cushioning groove along an axial direction of the leading cylinder;
• and
• a second groove wall located on the other one of the two opposite sides of the cushioning groove, extending from the bottom of the cushioning groove, and extending obliquely relative to the axial direction of the leading cylinder;
• and
• a cushioning protrusion matching the cushioning groove;
• wherein the elastic unit, the first cushioning plate, and the second cushioning plate are sequentially disposed on the leading cylinder along the axial direction of the leading cylinder, and two opposite ends of the elastic unit respectively abut the first cushioning plate and the leading cylinder;
• the cushioning groove and the cushioning protrusion are respectively formed on the first cushioning plate and the second cushioning plate;
• when the second cushioning plate is rotated to allow the cushioning protrusion to press the first groove wall, the first cushioning plate, the second cushioning plate, and the leading cylinder rotate synchronously;
• when the second cushioning plate is rotated to allow the cushioning protrusion to press the second groove wall, the second cushioning plate rotates relative to the first cushioning plate and pushes the first cushioning plate to move along the axial direction of the leading cylinder and compress the elastic unit.