| 摘要 |
An adjusting device that is mounted in a film packaging machine includes a moving mechanism that selectively moves two support blocks in opposite directions and toothed wheels mounted to the support blocks in a symmetric manner and driven by a timing belt that is mechanically coupled to a motor for rotating film drive rollers that are mounted to selected ones of the toothed wheels. Thus, the film drive rollers are movable in opposite directions with the support blocks for adjusting the distance between the rollers, which allows for accommodation of packaging films of different sizes between the rollers, while not interfering with the operation of the film drive roller for driving the packaging film therebetween. This arrangement allows for uniform application of driving force to the film by the film drive rollers and thus realizing smooth and stable movement of the film in packaging an article.
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