Cut to Length Line

Cut to length line is a use of a series of machines that create flat, rectangular blanks from large metal coil materials. Cut to length method is also named as CTL, representing the words of cut to length lines as abbreviation.

Cut to length machines are many of them, such as sheet metal coilers, de-coilers, cutting machines, flat transmission tables, rollers, and other cut to length line machines that are requested in the layout drawings by the manufacturers. 


Sheet Metals De-coiling in Cut to Length Lines

When the raw materials are about to be transferred to the cutting processing, the de-coilers have to uncoil the larger material or master coils, and make them straighten or flatten as the preparation state. After this step is finished, then the cutting mechanism will cut the flatten materials to the required length as it moves through the line. And most of all, the cut to length lines will ultimately stack those cut sheets into a bundle for convenient purposes.

Steels do not come off of a larger coil in a flat form, so they needs to be stretched into flatness by the cut to length lines during the procedure, and many cut to length line suppliers utilize roller leveling technology to stretch and compress the metal materials, because this method increases flatness tolerance and material stability for cut to length process in a significant way.

The ultimate uses of the cut materials have to guarantee precision cutting accuracy that meets the exact specifications for the end users. Consumers of those sheets come from different markets, so cut to length lines suppliers would know about the technological details in advance before they handle the cut to length lines to the customers’ plants. Once installed, the adjustment of cut to length lines are hard to be largely modified, so it is better to have everything well settled in advance. 


Metal Coil Management

Not all the onsite metal coils are to be used immediately. If one of the coils is to be used later, then such arrangement may be connected to the cut to length line coordination system. In the metal working industry, coiling is a relatively broad term that describes the coiling of the intended metal materials into intended forms as for further usages such as spring coils or it may simply for the sheet metal coiling for stock reservation.

For this kind of usages, they will be later de-coiled for other following processes. Therefore, a coiling machine is much like a winding machine in many aspects. A winding machine, or winder, is a machine for wrapping string, twine, cord, thread, yarn, rope, wire, ribbon, tape, etc. onto a spool, bobbin, reel, etc. And once winders have a center roll, which may be a bobbin, spool, reel, belt-winding shell, or other variety, on which the material is wound up firmly. 

There are often some sturdy metal bars that travel through the center of the roll, and those bars are shaped according to their targeted purpose. A circular bar facilitates greater speed, while a square bar provides a greater potential for torque forces. Users need to figure which shape best matches to their cut to length lines so the balance between processing speed and torque force can be leveled. Edge sensors are used to sense how full the center roll is. They are mounted on adjustable slides to accommodate many different widths, as the width increases when the center roll is filled. The sensitivity of the sensors is determined by the required speed of operation. The same requirements are applied to the coiling machine in which metal sheets are coiled into a roll, while it is under preparation stuff by workers.


Slitting of Steel Coils on Cut to Length Lines

With the help of the de-coil process and the further cut to length procedure, there is another famous process which can grant the de-coiled sheet an appropriate length or width, which is called the steel coil slitting line. In the metal forming industry, automatic steel coil slitting lines are widely applied in all kinds of industries for the most suitable applications. Coil slitting is much like roll slitting, which is a shearing operation that cuts a large roll of metal materials into narrower rolls for industrial consumers. Among the inventory, there are two types of slitting, first is log slitting and the other is the rewind slitting. Regarding the log slitting case, the roll of material is treated as a whole part, and one or more slices are taken from it without an unrolling procedure. 

These are some cut to length line features introduced while there are still many prominent working mechanisms that activate the whole procedure. Now, manufacturers of cut to length lines integrate their facilities with smart technology to improve the cutting and slitting quality, making the whole process more proficient for different kinds of sectors.

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