Filament conveying device with tension degree adjusting function

The filament conveying device comprises a back plate, a guide groove is vertically formed in one end of the front side of the back plate, a first supporting plate is connected into the guide groove in a lifting mode, a guide roller horizontally rotates outside the first supporting plate, an annular wire groove is formed in the outer edge of the guide roller, and a second supporting plate is connected to the other side of the back plate in a telescopic mode. A take-up mechanism is arranged on the outer side of the second supporting plate, a supporting block is fixedly connected to the upper edge of the front side of the back plate, an infrared laser instrument is vertically fixed to the bottom face of the supporting block and electrically connected with a controller, and the controller is fixedly connected to the side face of the back plate and electrically connected with the take-up mechanism. According to the silk thread take-up device, silk threads are clamped in the thread grooves in the guide rollers, the