Abstract: A conveying mechanism for a 3D printer includes a base and a conveying structure disposed on the base. The conveying structure includes a frame, a driving wheel assembly, and a conveyor belt. The conveyor belt is a metal conveyor belt. A PEI coating is sprayed on an outer surface of the metal conveyor belt. A printing nozzle mechanism is disposed above the conveying structure. Rigidity of the metal conveyor belt is high, and the conveyor belt itself has no elasticity. Even when a squeezing force is generated between the printing nozzle and the conveyor belt, the conveyor belt does not deform, which improves printing accuracy. In addition, the outer surface of the metal conveyor belt is sprayed with the PEI coating to improve adhesion and friction between the metal conveyor belt and printing material.

Abstract: Provided is a strain sensor including a fixing plate and a strain gauge. The fixing plate includes a first supporting part and a second supporting part flexibly connected to the first supporting part. The present application is advantageous in that a strain sensor with a simple structure, high reliability and high sensitivity is provided. The horizontal status of a contact surface may be detected by a little amount of deformation, and the flexible fixing plate can provide a buffer for the equipment to prevent damages due to direct impact.

Abstract: Provided is a strain sensor including a fixing plate and a strain gauge. The fixing plate includes a first supporting part and a second supporting part flexibly connected to the first supporting part. The present application is advantageous in that a strain sensor with a simple structure, high reliability and high sensitivity is provided. The horizontal status of a contact surface may be detected by a little amount of deformation, and the flexible fixing plate can provide a buffer for the equipment to prevent damages due to direct impact.