The Complete Line
The complete roll forming line can become one of two approaches to the processing of a particular part; It can be arranged to produce that part
- From precut lengths, or
- From coiled strip.
Some parts demand the cut length approach; however, the most efficient, productive, consistent, and reliable arrangement is the coil fed line. It most often consists of a coil reel, roll forming machine, cutoff machine and run-out table. This is the basic concept applying to the majority of installations in the world. A more complex arrangement might be provided whereby auxiliary operations, such as prenotching, punching, embossing, marking, trimming, seam welding, spot welding, curving and coiling are performed continuously, with the result that a minimum of subsequent operating procedures might be involved to provide the finished NET product.
Figure 16: 26-Stand Refrigerator Panel Machine
Figure 16 shows a 26-pass machine for producing a refrigerator panel from precut, trimmed, prepunched lengths.
Figure 17 is a typical basic, coil fed roll forming line using a coil reel, a 11-stand forming mill and a 4-post type pneumatic cutoff press.
Figure 18 shows a prenotch, form and cut line. This, you see, includes not only the cutoff machine after the rolling machine but also another cutoff, in this case, termed a prenotch press, and a small stock straightener ahead of it. Although used most generally for developing a contoured end formation that cannot be developed after the shape is formed, this system can be used to prepunch many repetitive pattern combinations.
Figure 17: Typical Coil Run Line with Cutoff Press
Figure 18: Entry end of Typical Prenotch Line with Servo Feed
