| 摘要 |
A film packaging machine which comprises a set of upper and lower roll sheets of synthetic resin, and a bed having a recess and disposed behind the roll sheets. The lower roll sheet passes along the bed, such as to cover the recess provided in the bed. A marginal elastic ring is disposed around the recess, and the lower roll sheet is adapted to put an article to be packaged over the recess. Means for passing upwardly the upper roll sheet above said bed are provided, to pile it upon the lower roll sheet at the back of the body. A feed roller and a press roller passes the pile therebetween. A cutter and a hot plate includes a cylindrical cutter on the outside and a ring-shaped hot plate on the inside, which constitutes a single body. A hand lever and a working shaft, the latter being turned back and forth by means of the hand lever. The working shaft interlocks with the cutter. Means are provided for conveying the upper and lower roll sheets backwardly upon lifting the cutter and the hot plate. An intermediate shaft is operated upon turning the working shaft. An interlocking device is arranged for transmitting the turning of the intermediate shaft of the feed roller. Means are arranged for pressing down the upper roll sheet upon moving downwardly the cutter and the hot plate. The upper roll sheet passes obliquely by the cutter and the hot plate, to wind back the upper roll sheet. Both the roll sheets are kept at rest without transmitting the turning of the working shaft to the intermediate shaft and, accordingly, to the feed roller by the free wheel fitted to the intermediate shaft. The upper roll sheet is piled upon the lower roll sheet for covering the article to be packaged. The cylindrical cutter and the ring-shaped hot plate cutting and heat-sealing simultaneously both roll sheets on the elastic ring, and the article is released out of the machine through the recess.
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