Gluing device, gluing method and colloid for packaging devices

A gluing method comprising:

• adding magnetic material into a glue to be instilled in such a manner that the magnetic material is dispersed in the glue;
• applying a magnetic field with an electromagnetic coil in an instillation head filled with the glue when the glue is being instilled, so as to apply a force to the magnetic material through the magnetic field in a direction identical to or opposite to an instillation direction;
• applying a pressure onto the glue within the instillation head by driving a slidable screw with a slidable plate perpendicularly mounted to the slidable screw in the instillation head to move relative to the instillation head, thereby moving the glue toward the instillation outlet in the installation direction;
• monitoring a total current change in the electromagnetic coil to determine a change in an induction current of the magnetic field, and calculating a flow rate of the glue in the instillation direction in accordance with the change in the induction current;
• and
• regulating a current for generating the magnetic field in accordance with a difference between the flow rate of the glue and a desired flow rate.

A gluing device comprising:

• an instillation head configured to guide glue having a magnetic material therein in an instillation direction;
• an electromagnetic coil configured to apply a magnetic field within the instillation head, so as to apply a force to the magnetic material through the magnetic field in a direction along the instillation direction;
• a total current charge monitoring configured to monitor a total current change in the electromagnetic coil to determine a change in an induction current in the magnetic field, and calculate a flow rate of the glue in the instillation direction in accordance with the change in the induction current;
• a controller configured to regulate a current supplied to the magnetic field generation mechanism in accordance with a difference between the flow rate of the glue provided by the monitoring mechanism and a desired flow rate;
• and
• a slidable screw with a slidable plate perpendicularly mounted to the slidable screw in the instillation head, the screw configured to drive the slidable plate to apply a pressure onto the glue within the instillation head so as to move the glue toward the instillation outlet in the instillation direction.