Patent ID: 9205597
Filing Date: 2015-12-08
Classification: B29C,F16B

Abstract:
1. An apparatus for mounting a heat seal bar on a heater unit in a machine successively making plastic bags, the apparatus comprising: a receiving recess formed in the heat seal bar to be opposed to the heater unit; an insert received in and fixed to the receiving recess to extend in a direction in which the receiving recess is opposed to the heater unit, the insert including external and internal end portions and a side, the insert further including an axial groove formed therein to open to the side so that an axial opening is formed in the side; an adjacent recess formed in the heat seal bar to be disposed adjacent the receiving recess in a direction crossing the direction in which the receiving recess is opposed to the heater unit, the adjacent recess being communicated with the axial opening and the axial groove; a tension pin supported by the heater unit to extend toward the heat seal bar and terminate at a head formed thereon, the tension pin being inserted into the adjacent recess and then inserted into the axial groove through the axial opening; an inward protrusion formed on the insert to protrude into the axial groove at the external end portion of the insert; and an actuator member provided at the heater unit, the tension pin being actuated by the actuator member to be pulled and moved axially thereof and relatively to the heater unit after being inserted into the axial groove so that the head is engaged with the inward protrusion, the tension pin and the insert cooperating with each other to mount the heat seal bar on the heater unit.