Choking prevention overtime protection device of cotton lap pull roller motor

Abstract

The invention discloses a choking prevention overtime protection device of a cotton lap pull roller motor, and relates to the field of electrical control of textile machinery. A three-phase AC power supply is connected with an inlet end of an automatic circuit breaker, an outlet end of the automatic circuit breaker is connected with an inlet end of an automatic air switch, an outlet end of the automatic air switch is connected with an incoming line end of the pull roller motor via a main loop contact of a contactor, an outgoing line end of the pull roller motor is connected with ground, the outlet end of the automatic air switch is also sequentially connected with a stop button and an auxiliary normally-closed contact of an overtime protector, an outgoing line end of the auxiliary normally-closed contact of the overtime protector is connected with an auxiliary normally-open contact of the contactor, a doffing signal is connected in parallel with the auxiliary normally-open contact of the contactor, the auxiliary normally-open contact of the contactor is connected with a neutral wire end through a contactor coil of the pull roller motor, an overtime protector coil is connected in parallel with the contactor coil of the pull roller motor, and the setting time of the overtime protector coil is larger than time required for the normal roller pulling action. By the device, whether the roller pulling action is normal is automatically distinguished, a motor and mechanical fault is prevented, and the device is simple in structure and accurate in action, and is convenient to use.

Description

technical field

[0001] The invention relates to the technical field of electromechanical control in the textile industry, in particular to an anti-choking overtime protection device for a cotton roll puller motor of a blowroom lapping machine. Background technique

[0002] At present, in the known cleaning equipment such as the three automatic devices of the A076 lapping machine, the roller pulling motor runs after the cotton lap is doffed, driving the roller pulling device to pull the cotton roller out of the middle of the cotton lap, and the motor reverses after the cotton roller is pulled out Homing, waiting for the next roll-off. In actual production, when spinning chemical fiber varieties, due to the high tension of chemical fiber varieties, the cotton lap is tightly locked on the cotton roller, so that the load on the pull-out roller motor increases during doffing, and in severe cases, the cohesion of the cotton lap cannot be overcome. It will cause the motor to stall...

Images