塑料瓶自动封口机设计

毕业设计（论文）说明书课题名称塑料瓶自动封口机

学院机械工程学院

专业机械工程及自动化

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摘要

塑料瓶自动封口机是一台用于饮料或化工产品的塑料瓶自动封口设备，包括驱动装置，封口装置，封口膜退绕卷取装置以及切膜装置。驱动装置采用伺服电动机进行驱动，伺服电动机通过联轴器与减速器进行连接，减速器通过带传动连接传动带，塑料瓶置于传送带上，通过伺服电动机控制塑料瓶在封口工位、切膜工位停止；封口装置采用气缸控制，热封口器采用采用电能进行加热，通过温控开关进行温度控制，通过热封口板与瓶口的压合进行热封。封口膜退绕卷取装置包括封口膜退绕装置和封口膜卷取装置，封口膜退绕装置通过滚动轴承固定在机架上，封口膜卷取装置通过带传动与伺服电动机连接，通过伺服电动机控制封口膜有时序的转停进行退绕卷取动作，即在进行切膜、封口工序是停止转动，在该工序的间隔时间进行退绕卷操作，从而保证进行切膜、封口工序时热封口膜处于正确位置；切膜装置采用热切膜，有电能进行加热，温度控制器进行温度控制，将热封膜进行切割。

工作时，当塑料瓶进入工作空间后，塑料瓶在传送皮带摩擦力的作用下前进。当塑料瓶输送到至封口工位时，伺服电动机将停止转动，塑料瓶停在封口工序位，封口装置进行完封口工序以后，伺服电动机将继续转动，将塑料瓶传动到切膜工序位置，伺服电动机停止转动，气缸控制切膜压板下压，进行切膜工序，切膜完成以后，伺服电动机控制传送带继续转动，将塑料瓶输送到下一工序，同时，封口膜退绕卷取装在伺服电动机控制下进行退绕转运动，退绕到指定位置以后，伺服电动机停止。

该塑料瓶自动封口机方案，封口平稳、经济、快速。这次设计的塑料瓶自动封口机，可以应用于工厂流水线进行大规模的生产，提高工厂的生产效率。

关键词：封口机；切膜；热封口

Abstract

Plastic bottle automatic sealing machine is a plastic bottle for beverage or chemical products-automatic sealing equipment, which comprises a driving device, a sealing device, the sealing film-unwinding coiled device and cutting device. Driving device adopts the servo motor to drive, servomotor connected through the coupling and reducer, reducer through belt drive is connected with the transmission belt, plastic bottle is arranged on the conveyor belt, through the servo motor control plastic bottles in the sealing station, station stop cutting film; sealing device controlled by cylinder, heat seal uses electrical energy to heat. The temperature control, the temperature control switch, through the thermal sealing plate and the pressing heat sealed bottle. Sealing film-unwinding coiled device comprises a sealing film unwinding and rewinding device,device sealing film unwinding roller bearing is fixed on the frame through the sealing film coiling device through the transmission belt is connected with the servo motor, unwinding coiled of action through the servo motor control sealing film time to stop, in cutting film, sealing process is stopped,the unwinding roll of operation in the process of the time interval, so as to ensure the cutting film,sealing process of heat sealing film is in the correct position by hot film; film cutting device, electric-heating temperature controller to control the temperature, the thermal sealing film cutting.

At work, when the plastic bottle into the working space, plastic bottles along the conveyor belt-under the action of friction force. When the plastic bottle conveying to the sealing station, servo motor will stop, stop in a plastic bottle sealing process, after the sealing device of end sealing process, the servo motor to rotate, the plastic bottle drive to membrane cutting position, servo motor stops rotating, the cylinder control film cutting plate under pressure, cutting film after the completion of the process, cutting film, servo motor control the conveyor belt conveyor continues to rotate, the plastic bottle to the next process, at the same time, the sealing film unwinding coiled in servo motor control for unwinding rotary motion, then off to the specified location, servo motor stop.

Automatic sealing machine for sealing the plastic bottle . Automatic sealing machine for plastic bottle of this design, can be used for mass production in the factory assembly

line improving the production efficiency of the factory.

Keywords: Sealing machine; cutting film; heat sealing