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DIECO MULTI-AXIS CNC TUBE BENDING SYSTEM The unbundler will be capable of tubes up to 72 inches long, and will accept up to 800 tubes in the 7/8 inch diameter size. Our unbundler normally incorporates metallic belts for lifting the tubes and metal chains. To avoid damage with your prepainted product, we would use nylon straps and plastic chains,to avoid any damage to the coatings. The seamfinder station will incorporate a Roland magnetic anomaly detector. Removes straight tube from the seamfinder and places it in the bending station. Consists of 3 independently controlled compression style bending heads. With the style of bend head proposed, which is our standard design, the follow die is held against the tube, while the bend arm "wipes" the tube around the form die. There is no sliding motion between the tooling and the tube, which will serve to protect the coating on the tube. This method will also avoid the heavy clamp marks which are currently evident on your products. Each of the three bend heads will be under separate servo control for bend angle, allowing simple modifications to correct for spring back. In operation,the tube will be placed in the bend station,where it will be clamped in the center bend head. The outer two bend heads will then move into position and clamp the part, and form the outermost two bends. These bend heads will then release, allowing the center bend head to form the central bend, completing the part. This method ensures that the bend-to-bend distance is held very accurately, while still maintain a rapid cycle time. The distance between each bend head is manually adjustable and the central bend head is adjustable in rotation, to allow the orientation of the central bend to be "fine tuned". It is not intended that the last adjustment be used other than for initial setup purposes. Removes the finished part from the bender, reorients it, and places it in the tooling module. Tooling Module: The part is flattened, pierced and end trimmed. This station consists of two hydraulic presses to flatten the ends of the part, pierce the pivot hole, and trim the end. These presses incorporate dies which will engage the tube prior to flattening, ensuring that the flattened area is centralized in both directions. These two units are mounted on slides, offering easy adjustments to accommodate different widths and lengths of parts. The pierced holes for the feet will be produced by 3 standard piercing units; 2 of which are mounted on the same base as the end form presses. Thus, as the end form presses are adjusted to accommodate different widths of parts, the two holes near the outboard bends are also adjusted. The third piercing unit is mounted on a slide conforming to the shape of the part, with a screw adjustment mechanism to raise and lower press according to size of the part. These piercing units and flattening presses contain compact die sets, which can be rapidly changed to accommodate the 3/4 inch and 7/8 inch diameter tubing included in your program. Consisting of a hydraulic system, valves, switches for all motions, computer based control system and a touch screen man/machine interface. The control system incorporates diagnostic messages for all errors, and a setup screen to allow the bend angles to be quickly adjusted. The screen will also include complete setup instructions for each part. We estimate the changeover time between frame sizes for a given tube size to be 10 minutes, with one operator. Changing the tube diameter involves changing the bend dies, as well as the inserts in all the presses. We estimate this will take 20 to 30 min. |