Introduction of Gill Box Machine


One of the most significant pieces of equipment in the long fiber processing system, such as worsted wool spinning, is the gill box machine. Because the fiber straightening parallelism and evenness of the slivers generated by the roller carding machine do not match the spinning criteria, some of them still have the “hook” phenomenon and cannot be spun directly in the long-staple spinning system. As a result, the top is processed and transformed using a gill box machine.


The gill box machine carding process is a crucial step in the wool spinning process. The purpose is to improve the parallel stretching degree of the fibers and improve the structure of the sliver through merging. The working state of the gill box has a very close relationship with the output and quality of worsted wool spinning.

The main tasks of gilling process

  • Several merging and drafting improved the homogeneity of medium and long sliver parts;
  • Straightening parallelism and fiber separation are increased further by combing the needles, and hooks and curls are removed.
  • The fibers are blended uniformly and the yarn quality is maintained by repeated merging and drafting.
  • Eliminate any minor impurities and short hair.

Types of gill box

There are many different types of gilling machines used in the worsted wool spinning processing system today.

They are classified based on the transmission mode of the needle plate and the device for controlling fibers in the drafting area. Screw type gilling machines, chain type gilling machines, rotary type gilling machines, toothed roller type gilling machines, and needle plate free drafting machines are the most common.
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According to the installation arrangement of the needle board, it can be divided into three types: open type, cross type and half cross type.

Process of gill box

The process of gill box is similar to that of the draw frame, except that the carding box mechanism is added to the drafting device.

Several slivers are pulled from the can and stacked side by side on the bar guide table to create fiber sheets before entering the rear roller after passing through the bar guide roller and bead roller, respectively.

After being somewhat drafted by the middle roller, the sliver enters the cross needle plate region and is drawn in a circular motion by the front roller by the upper and lower needle plate holding belts to finish the drafting and carding. To achieve progressive carding, the top and lower needle boards gradually enter the fiber layer.

The fibers drawn and output by the front roller are collected into a sliver by the bundler and the compacting roller, and finally coiled and placed in the output can regularly by the coiling disc and the coiling inclined tube.
More information about gill box can be found in fyitester.com.

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