Planning of Tandem Stamping Lines with Gantry Transfer Manipulators Press‑Layout Design

Tandem stamping lines with gantry transfer manipulators connect multiple presses in series. Workpieces travel sequentially through each press station until final completion. Proper planning covers press arrangement, manipulator installation, gripper configuration and central control system.

Presses are generally arranged in a straight‑line layout with material entering from one end and exiting from the other. This layout features simple structure and clear transfer paths. Inter‑press spacing shall balance manipulator working range and maintenance access. Excessive spacing extends transfer time; insufficient clearance impedes service work. Press bolster height and die height should be unified to maintain consistent pick‑and‑place elevation for the manipulator.

Two installation options are available for gantry transfer manipulators. The floor‑mounted rail type runs on linear guide rails beside presses. It delivers low center‑of‑gravity and stable operation, suitable for heavy‑load and long‑distance transfer. The overhead‑gantry suspension type mounts manipulators on overhead beams; grippers descend for part handling without occupying floor area. Selection depends on workshop conditions and press layout.

Grippers are customized according to workpiece geometry and material. Hook grippers suit parts with holes, clamp‑type grippers for edge‑grippable workpieces, and vacuum suckers for large flat panels. Sufficient clamping force is critical to prevent workpiece loosening during high‑speed traverse for medium‑to‑large sheet‑metal components.

All presses, rail axes and gripper actuators connect to a unified PLC network. The central control system coordinates manipulator positioning, gripper action and press triggering via precise signal exchange. Safety interlock logic is implemented: presses are locked while manipulators occupy die zones, and manipulators are prohibited from entering before press slides reach safe positions.

Replacing manual handling, gantry transfer manipulators deliver constant transfer takt free from operator fatigue. Surface scratches and collisions are reduced to improve product consistency, while operators stay clear of hazardous press zones.

Guangdong Ruihui Intelligent Technology Co., Ltd. has over 20‑year experience in stamping automation and is a national Specialized, Refined, Differential and Innovative “Little Giant” enterprise. Headquartered in Dongguan, it has more than 400 employees including over 80 R&D engineers. Ruihui provides proven solutions for tandem lines equipped with gantry transfer manipulators. Load, stroke and speed are calculated according to press layout, workpiece weight and takt targets. Both floor‑rail and overhead‑suspended mounting configurations are applied in mass‑production cases for medium‑large sheet‑metal parts in home‑appliance, 3C and communication industries. Nearly 5,000 sets of Ruihui‑manufactured equipment operate at domestic and overseas customer sites, serving well‑known OEMs and Tier‑one suppliers such as BYD, Geely, Volkswagen, Tesla, BMW, Mercedes‑Benz, Honda and Jaguar Land Rover.