in automatic packaging machines, sometimes labels are required on the outside of plastic bags. When automatic labeling is required, the label is usually attached to the plastic film and molded first, and then the packaging action is completed. However, in the packaging process, due to factors such as friction and resistance between the plastic film and the former, the initial label will be just in the middle of the plastic bag, but after packaging for a period of time, the label will deviate or even be cut by the cutter, so it is necessary to adjust the position of the labeling structure. Similarly, for some electronic products with trademarks, trademarks need to be fixed on the casing of electronic products accurately in all directions. However, the existing position adjustment methods of the labeling machine only make adjustments in the front and back direction, the left and right direction and the up and down direction. When the position of the trademark deviates from the angle, the existing position adjustment methods can't meet the needs of the left and right rotation of the trademark at all, so the angle adjustment of the trademark can only be completed manually. However, it is very difficult to adjust the angle of trademark manually, which is not only difficult to meet the requirements of high precision of electronic products, but also wastes manpower and time and costs a lot. In view of this, it is necessary to improve the existing trademark position adjustment method to solve the above problems.