| 摘要 |
<p>An electromagnetic cutting apparatus for cutting binding tape sewn to the upper and side edges of shoe upper components at the leading and trailing edges of the components includes an electromagnetically operated plunger with a self-adjusting blade on the bottom end thereof, photoelectric sensors for detecting the leading and trailing edges of the components, and an electronic circuit for rapidly charging a coil surrounding a core on the plunger for driving the plunger and blade downwardly to cut the tape. Condensers in the electronic circuit are normally charged and, in response to signals from the photoelectric sensors, instantaneously discharge into the coil to actuate the plunger, which after cutting the tape is returned to a rest position by a helical spring mounted on the plunger.</p> |
