Cold Forging Machine by Rainbow

The Cold Forging Machine by Rainbow is used for efficient, high-precision cold forming of metal parts such as bolts, screws, rivets and nuts. It is suitable for manufacturing fasteners and non-standard parts used in automotive, aviation, rail, machinery, construction, furniture, light industry and daily-use products.

Key features include high-efficiency cold forging, robust construction for long service life, quality core components (PLC, engine, bearings), compact footprint for various workshops, automatic multi-station cold bolt forming, adjustable pneumatic gripping, air-clutch inching function, and safety/alarms for abnormal conditions.

Available models in the provided specification are RBF-64S, RBF-84S, RBF-104S, RBF-104L and RBF-134L. Each model differs in forging force, punch/cut-off dimensions, output rate and motor power to suit different production needs.

Forging force ranges by model from approximately 35,000 kgf up to 120,000 kgf. Output rates depend on the model and part size, typically from about 75–210 pieces per minute across the model range (e.g., 140–210 pcs/min for RBF-64S down to 75–110 pcs/min for RBF-134L).

The machine supports a wide range of bolt/shank diameters and lengths. Applicable bolt sizes listed span roughly 3–12.7 mm (model-dependent). Maximum cut-off diameters and blank lengths vary by model (examples: cut-off dia up to φ15 mm, cut-off length examples up to 190 mm). Contact Rainbow with part drawings for exact model suitability.

Main motor power varies by model. In the provided specs the main motor power ranges approximately from 15 kW up to 37 kW depending on model and capacity. Final electrical requirements should be confirmed with Rainbow for the chosen model and local supply.

The Cold Forging Machine is described as robust and compact; a general weight indicated in the product description is about 3000 kg. Exact overall footprint and weight vary by model—please request model-specific dimensions and installation drawings from Rainbow.

The machine is equipped with reliable PLC control, quality engine and bearings, an air clutch for safe inching operation, conjugate cams and a swing-type pneumatic gripping mechanism. These components contribute to smooth, repeatable operation and extended service life.

The machine has multiple protective and alarm features: short-wire detection (will free the gripper, stop the machine and raise an alarm), knock-out force checking with automatic stop and alarm if force is excessive, and other interlocks associated with the pneumatic and cam-driven systems.

Tooling and grippers are designed for interchangeability and adjustment. The gripper supports translational and turnover wide-open modes, gripper capacity is adjustable, individual knock-out stations are independently adjustable, and cams can be changed to alter final operations. A hand-operated digital feeding length control is provided for precise feed setup.

This is an automatic multi-station cold bolt former with high automation and efficiency suited for continuous production of fasteners. Features such as automatic feeding, pneumatic gripping, conjugate-cam driven gripper swing and air-clutch inching support automated, high-speed operation.

Rainbow provides after-sales support including overseas engineer service to assist with installation, commissioning and technical issues. For specifics on service response, spare parts and training, contact Rainbow sales or service representatives.

Regular maintenance practices include scheduled lubrication of bearings and sliding blocks, inspection and replacement of wear plates and dies, periodic checking of pneumatic components and air supply, monitoring knock-out force and gripper function, and following Rainbow's service and spare-parts recommendations to keep the machine operating reliably.

Select a model based on required forging force, maximum cut-off diameter/length, desired output rate (pcs/min), part geometry (punch/die dimensions) and available power supply. Provide Rainbow with part drawings, material specification and target cycle time so they can recommend the most suitable model and tooling.

Yes. In addition to standard fasteners, the machine and cold forging technique are used to produce specialized and non-standard parts for sectors such as aviation, vehicle manufacturing, rail, and precision machinery. Custom tooling and process development may be required for atypical parts.