Method and apparatus for applying hot melt adhesive to base cups

In an apparatus for assembling containers into cup-shaped bases, an applicator means for coating a contact surface of each base, with a bonding agent preparatorily to placement of a corresponding container therein, the applicator means comprising:

• (a) a support fixed to said apparatus adjacent the supply of cup-shaped bases,
• (b) pivot means rotationally supported by the support in alignment with the open end of one of the cup-shaped bases,
• (c) an air-actuated nozzle fixed to said pivot means and rotatable therewith for ejecting a bonding agent into the cup-shaped bases,
• (d) an air-actuated cylinder connected to the support and to the pivot means for rotating the nozzle with respect to the cup-shaped bases, and
• (e) control means for causing the nozzle to rotate and eject a bonding agent simultaneously, both the nozzle and the air-actuated cylinder being connected through the control means to a common source of pressurized air.

In an apparatus for assembling containers into cup-shaped bases, an applicator means for coating a contact surface of each base, with a bonding agent preparatorily to placement of a corresponding container therein, the applicator means comprising

• (a) a support fixed to said apparatus adjacent the supply of cup-shaped bases,
• (b) pivot means rotationally supported by the support in alignment with the open end of one of the cup-shaped bases,
• (c) nozzle means fixed to said pivot means and rotatable therewith for ejecting a bonding agent into the cup-shaped bases,
• (d) a double-acting cylinder connected to the support and to the pivot means for rotating the nozzle with respect to the cup-shaped bases, and
• (e) a two-position four-way valve connected to said double-acting cylinder for causing the nozzle means to rotate and eject a bonding agent simultaneously, such that the piston in the cylinder is caused to move in opposite directions in sequential operations of the applicator means.

In an apparatus for assembling containers into cup-shaped bases, an applicator means for coating a contact surface of each base, with a bonding agent preparatorily to placement of a corresponding container therein, the applicator means comprising:

• (a) a nozzle support adapted for rotation about an axis,
• (b) a nozzle means fixed to the nozzle support on the rotational axis thereof and rotatable therewith for ejecting a bonding agent,
• (c) a supply of bonding agent connected to the nozzle means,
• (d) heater means fixed adjacent the nozzle means and rotatable therewith for heating the bonding agent,
• (e) thermostatic means fixed with respect to the heater means and connected thereto for controlling the temperature of the bonding agent, and
• (f) means for causing the nozzle means to rotate and eject a bonding agent simultaneously, comprising a position-indicator means fixed to rotate with the nozzle support and a switch means operated by said position-indicating means for controlling the actuation of the nozzle means.