Twisting-doubling-twisting
Twister-doubler-twister (combination twisters) by lema lezzeni
Officine Gaudino produces combination twisters in its LEMA LEZZENI division with a wide range of models, including some models for specific processes such as, for example, glass threads or sewing threads.
The models are:
- TBR/DELTA = combination twister with top deck spindles in a ‘delta’ position
- TBR/LA ELECTRON = combination twister with the top deck spindles in line
- TBR/DT = combination twister with TFO spindles on the top deck
- TBR/SC = combination twister with side creel for the first twist
TBR/DELTA combination twister with top deck spindles in a delta position
The TBR/DELTA model is a twister-doubler-twister in which the spindles of the upper deck for the first twist are arranged in two rows so that each coupling group for the first twist has a triangular shape.
This odel is available in 2×1 and 3×1 versions (i.e. with two or three couplings). The reason for the ‘delta’ geometry of the spindles of the upper deck is due to the possibility of using in feed flanged bobbins with large diameter flanges (normally 110 mm) with a weight of at least one Kg of polyamide, maintaining a gauge between the spindles of the lower deck within an acceptable size (200 mm in the 2×1 version and 300 mm in the 3×1 version).
In this model, the spindles of the upper deck and those of the lower deck are both driven by a tangential belt. In the event of a thread breaking, the lever is released by lifting mechanically from the drive shaft and the relative spindle of the lower deck moves from the tangential belt through a joint that causes it to stop against a locking lining. Thecontrol is electronic: all data are set on the touch panel.
It is also possible to drive each group of 2 or 3 spindles on the top deck and the spindle on the bottom deck with a single motor. This versioni s called TBR/DELTA ELECTRON. In this case, in the event of a thread breaking, a cutter cuts the threads still working and the motors driving the spindle group of the top deck and the spindle of the bottom deck are deactivated.
TBR/LA Electron combination twister with the top deck spindles in line
The TBR/LA model is a twister-doubler-twister in which the spindles of the upper deck for the first twist are arranged in one row only. This model is available in the 2×1 and 3×1 versions (i.e. with two or three couplings).
In this model the spindles of the upper deck are fed with flanged bobbis with a weight limited to 670 grams of polyester filament in the 3×1 version or 1,000 grams of polyester filament in the 2×1 version.
This in order to feed a take-up bobbin of 2,000 grams polyester. In this model, the spindles of the upper deck and of the bottom deck are driven by individual motors. In the event of a thread breaking, a cutter cuts the threads still working and the motors driving the spinldes on the top deck and the spindle in the bottom deck are deactivated. The control head-stock is electronic: all data are set on the touch panel.
TBR/DT combination twister with tfo spindles on the top deck
The TBR/DT model is a twister-doubler-twister in which the spindles of the upper deck for the first twst are the two-for-one type and arranged in one row only. This model is available in the 2×1 and 3×1 versions (i.e. with two or three couplings).
In this model the spindles of the upper deck are fed with cops with a weight limited to 1000 grams of polyester filament in both the 3×1 and 2×1 versions. In this model, the spindles of the upper deck are driven by a tangential belt, whereas each bottom spindle is driven by a motor. In the event of a thread breaking, a cutter cuts the threads still working and the motor driving the bottom deck is deactivated.
TBR/SC combination twister with side creel for the first twist
When it is necessary to work starting from packages with a heavier weight than that allowed by the models listed before, or when you want to process threads weighing more than 5,000 Dtex, the spindles for the first twist are located on the side of the machine. The model with this configuration is called TBR/SC.
The TBR/SC model is equipped with a larger feed lever compared to that of the previous models, since it must be able to drag up to 5 ply and heavier thread weights. In this model the spindles of the first and second twists are controlled by a single motor and, in the event of a thread breaking, the feeding lever is released, the corresponding motors are deactivated and braked.
