Automatic speed regulating device and control method for material pressing roller of quantitative tobacco feeding machine

Abstract

The invention discloses an automatic speed regulating device for a material pressing roller of a quantitative tobacco feeding machine and a control method. The automatic speed regulating device comprises the material pressing roller, a stepping motor, an adjustable motor mounting bracket, an electronic belt scale, a feeding machine quantitative tube, an electronic belt scale driving roller, a stepping motor driver, a PLC (Programmable Logic Controller) and the feeding machine, the device is characterized in that one end of the material pressing roller is connected with a stepping motor, the stepping motor is used for driving the material pressing roller to actively rotate, the stepping motor is electrically connected with a stepping motor driver and a PLC controller, and the material pressing roller can realize real-time synchronization with the operation frequency of a driving roller motor of the electronic belt scale through automatic speed regulation. When materials enter precision metering equipment through a narrow space, the upper layer and the lower layer are subjected to working loads which are equal in size and consistent in direction in a certain cross section, unevenness of corrugations on the surfaces of the materials is effectively eliminated, the materials passing through a weighing area of the electronic belt scale are uniform, the surfaces are flat, and the weighing efficiency is improved. And the control precision of the tobacco leaf or tobacco shred material flow is improved.

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