05-03-2020 дата публикации
Номер: US20200071110A1
The present invention relates to a web film movement compensating device for a web film movement compensation between continuous forward movement section and intermittent forward movement section comprising two guide rollers () rotating freely in stationary positions between a continuous driving device () and an intermittent driving device (), two compensation rollers () rotating freely on two respective pivoting arms () oscillating about pivot shafts (), an elastic element () connected to one of the pivoting arms to actuate the corresponding compensation roller to move away from the guide rollers, and a movement transmission mechanism including lever arms and transmission rods () transmitting an oscillating movement from one of the pivoting arms () to the other. A web film () moved by the driving devices is supported on the guide rollers () and on the compensation rollers () forming a meander. 1. A web film movement compensating device for a web film movement compensation between continuous forward movement section and intermittent forward movement section for an automatic horizontal bag-forming and -filling machine , comprising:{'b': 1', '2', '5', '6, 'first and second guide rollers (, ) parallel to one another arranged such that they can rotate freely in stationary positions between a continuous driving device () and an intermittent driving device ();'}{'b': 3', '1', '2', '7', '11', '1', '2, 'a first compensation roller () parallel to said first and second guide rollers (, ) installed such that it can rotate freely on a first pivoting arm () oscillating about a first pivot shaft () parallel to the first and second guide rollers (, );'}{'b': 4', '1', '2', '8', '12', '1', '2, 'a second compensation roller () parallel to the first and second guide rollers (, ) installed such that it can rotate freely on a second pivoting arm () oscillating about a second pivot shaft () parallel to the first and second guide rollers (, );'}{'b': 7', '8', '3', '4', '1', '2', '1', '2, ...
Подробнее