GB1006925A - Automatic device for cutting off tube sections from glass tubes - Google Patents

Abstract

<PICT:1006925/C1/1> <PICT:1006925/C1/2> In an apparatus for cutting up glass tubing, a device lifts the lowest of a number of tubes in a sloping magazine and deposits it on a horizontal support whereon it is fed axially to an end stop spaced from the cutter, the severed piece being then transported away and the remainder again fed forward to the stop. A supply of tubing is placed in the magazine 4 and the first is lifted by an element 6 having a notched extension 11 by which the tube is located between pairs of a series of rollers 2. A stop 33 is raised to hold the tube in position for the end to be removed by a burner and cool roller 13. The stop is then retracted and causes the activation of an electromagnet 20 to raise a roller 16 into contact with the tube and feed it forward to a stop 14 adjustable to control the length to be cut off. Engagement of the stop causes de-energization of the magnet 20 and withdrawal of the roller 16. A driving roller 23 under the control of a roller 28 is then lowered into contact with the tube to rotate it while cutting is taking place. The cut piece falls on to a delivery shoot 15, thus allowing the stop 14 to re-energize the magnet 20 and raise the roller 16. When the length of tube has been reduced so that its end is no longer engaged by contact 29, a cam 10 is operated to raise the element 6 and the stop 33.