Windshield sewing thread positioning tool

The utility model relates to production of through channels, and particularly provides a windshield sewing thread positioning tool which comprises a machine base, an open groove is formed in the machine base, a downward sewing needle is arranged at the top of the open groove, and a supporting device, a clamping device and a positioning device are arranged at the bottom of the open groove. By arranging the positioning devices of different types, the tool can meet the positioning requirements of sewing threads of different pieces of wind shielding shed cloth; meanwhile, the clamping device is used for positioning the positioning device, the replaced positioning devices of different types can be positioned conveniently, the positioning requirement for the positioning devices is met, the replacement time of the tool is effectively saved, the application range of the tool is enlarged, and the working efficiency is effectively improved. 本实用新型涉及贯通道的生产，具体提出了风挡缝纫线定位工装，包括机座，机座上设置有开口槽，开口槽顶部设置有向下的缝纫针，开口槽底部设置有支撑装置、夹紧装置及定位