Automatic constant tension force regulating device for electric heating wire of foam cutting machine

The invention discloses an automatic constant tension force regulating device for an electric heating wire of a foam cutting machine. A base of the automatic constant tension force regulating device is provided with a left mobile shaft and a right mobile shaft which can slide left and right. The left mobile shaft is provided with a left ram capable of sliding up and down. The left ram is fixedly connected with a left threaded hole guide support, and the left threaded hole guide support is fixedly connected with an automatic constant tension force regulating body. The automatic constant tension force regulating body comprises a stepping motor. An electromagnetic inductor is arranged under the stepping motor. A regulating wheel capable of being wound with the electric heating wire is arranged under the electromagnetic inductor. The right mobile shaft is provided with a right ram capable of sliding up and down. The right ram is fixedly connected with a right threaded hole guide support. A guide pulley capable of fixing the electric heating wire is arranged at the lower end of the right threaded hole guide support. The automatic constant tension force regulating device has the following advantages that the structure is simple, operation is convenient, performance is reliable, the effect that a specific constant-force tension state is maintained when the electric heating wire is cut can be ensured, and cut foam is smooth in appearance and good in quality.