A strapping machine, comprising:
- a frame,
- a strap storage mechanism, which is used to store straps and supply the straps to a looping mechanism when needed;
- the looping mechanism, which is used to move the straps along a circular track and form a loop connected end to end;
- a tightening mechanism, which is used to tighten the straps in reverse and tightly bind the loop formed by the straps on a product to be tied;
- a welding mechanism, which is used to weld a head end and a tail end of the loop into one piece;
- and
- a strap cutting mechanism, which is used to cut off the straps that are still connected outside the loop;
- wherein the strap storage mechanism comprises:
- a reel assembly, which is used to install a reel;
- a locking device is provided on the reel assembly;
- the locking device controls the reel to be in a locked state or a rotatable state;
- when the reel is in the locked state, the reel cannot rotate;
- and when the reel is in the rotatable state, the reel supplies the straps;
- a plurality of fixed rollers, which are installed on one side of the strap storage mechanism;
- and the fixed rollers are used for winding the straps;
- and
- a plurality of movable rollers, which are installed on the other side of the strap storage mechanism;
- the movable rollers are used for winding the straps;
- and the fixed rollers and the movable rollers coordinate to form a strap storage area;
- the tightening mechanism comprises:
- a movable assembly movably mounted on the frame;
- the movable rollers are mounted on the movable assembly;
- the movable assembly can move between a first position and a second position;
- when the movable assembly moves to the first position, the movable rollers move away from the fixed rollers for strap storage;
- and when the movable assembly moves to the second position, the movable rollers approach the fixed rollers for strap conveying;
- a detection roller, which is used for winding the straps;
- and the detection roller is installed on a detection bracket;
- the detection bracket, which is rotatably or movably mounted on the frame;
- and the detection bracket is provided with a damping component that provides a certain resistance to the detection bracket;
- and
- a trigger device, which is used to detect the movement of the detection bracket;
- and when the detection bracket moves, the trigger device indirectly or directly controls the locking device, and the locking device makes the reel rotate;
- wherein the damping component is an electromagnetic damper with resistance adjustable, and a gear is installed on an output shaft of the electromagnetic damper;
- the detection bracket is a swing arm, a middle part of the swing arm is rotatably mounted on the frame, a lower end of the swing arm is installed with the detection roller, and a tooth surface portion is provided on an upper end of the swing arm;
- and the tooth surface portion meshes with the gear;
- and
- a sensing part is arranged on one side of the swing arm;
- and the trigger device is a sensor provided on the frame, and the sensor detects the movement of the sensing part.