Glue applying machine

A glue applying machine comprising:

• a machine body, a glue applying device, and a control device;
• wherein:
• the machine body defines a working platform for placing a workpiece with an operating area;
• the glue applying device is mounted on the machine body and situated at the working platform;
• the glue applying device includes a track mounted on the machine body, a movement unit mounted on the track and moved transversely, and a height limit member mounted on the movement unit;
• the movement unit includes a glue applying member directed toward the working platform, and a glue applying detection member located at a side of the glue applying member and directed toward the working platform;
• the glue applying detection member emits a laser beam which defines an effective detection section and a non-effective detection section;
• the height limit member defines a contact face contacting the workpiece;
• the control device sets at least one glue applying mode;
• the control device controls the laser beam to judge and detect the operating area of the workpiece through the effective detection section and to start the glue applying member.