Heat transfer printing on-line code printing system

A heat transfer printing on-line code printing system, comprising a worktable, wherein a conveyor belt which is driven by a power device fixedly arranged on the worktable is arranged at the top of the worktable in the length direction thereof;

• a pressing conveyor and a code printer are sequentially erected on the worktable along a conveying line of the conveyor belt;
• the pressing conveyor includes a mounting frame which is connected to the worktable and is erected on the two sides of the conveying line of the conveyor belt;
• an adjustment frame located above the conveyor belt is arranged on the inner side of the mounting frame;
• two roller groups that are arranged opposite to each other are rotatably arranged on the inner side of the adjustment frame;
• the two roller groups are distributed above the edges of two sides of the conveying line of the conveyor belt;
• both acting sides of the two roller groups penetrate out from the bottom of the adjustment frame to the position above the conveyor belt;
• the two roller groups are in coaxial transmission;
• one of the roller groups is in transmission with a power device through a first belt;
• the adjustment frame is connected to the mounting frame through a guide structure, and the mounting frame is in threaded connection with an adjustment rod that is pressed against the top of the adjustment frame;
• the inner side of the mounting frame is connected to multiple support components that are elastically pressed against the bottom of the adjustment frame;
• the multiple support components are all located above the acting sides of the two roller groups;
• when the adjustment frame is moved by rotating the adjustment rod, the adjustment frame is moved, through the guide structure, in the direction of an arc which takes the power device as a center and the length of the first belt as a radius.