This production line has an independent central control system, the system can communicate with the office computer to achieve remote control, and the use of touch screen display displacement and product counting, touch screen +PLC+ electronic displacement ruler combination, easy to set and control the upper limit of the slider, fast slow, lower limit and pressure holding time. Can achieve manual adjustment and automatic two working modes. Each working state can achieve constant pressure and fixed range of two pressing methods. This line is equipped with a fully automatic device, unloading device, to realize the automatic clamping and unloading of raw materials.