Yarn-tensioning device and arrangement and method for operating a creel
AssigneeBenninger AG
InventorsAlfred Jakob, Andreas Kleiner
Life of this patent
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Abstract
The invention relates to a yarn-tensioning device for producing a specific thread pull on a thread (5) that is unwound from a winding point (7) of a creel (2) and is guided to a warping machine arrangement (1). Said yarn-tensioning device comprises a rotating body (18) which is at least partially wound round by threads and an electric motor (19) which is connected to the rotation body. Said motor (19) is equipped with at least one brake transistor (20) for discharging excess energy produced when the generator of the motor is operated, said brake transistor being able to convert generator energy, arising when the generator is operated, into heat.
Claims11
A yarn-tensioning device for generating a specific yarn tension on a yarn which is drawn off from a winding station of a creel and is delivered to a winding apparatus, said yarn-tensioning device comprising
- a rotary body around which the yarn can be at least partially looped, and
- an electric motor which is connected at the rotary body and with the aid of which the rotary body can be driven, said motor having a generating mode,
- wherein, to discharge excess energy in the generator mode of the motor, the motor is equipped with at least one brake transistor, by means of which electrical current produced in the generator mode can be converted into heat, wherein
- the brake transistor is arranged on a side of the motor which faces the rotary body, so that air generated by movement of the rotary body cools the brake transistor.
A yarn-tensioning device for generating a specific yarn tension on a yarn which is drawn off from a winding station of a creel and is delivered to a winding apparatus, said yarn-tensioning device comprising
- a rotary body around which the yarn can be at least partially looped, and
- an electric motor which is connected at the rotary body and with the aid of which the rotary body can be driven, said motor having a generating mode,
- wherein, to discharge excess energy in the generator mode of the motor, the motor is equipped with at least one brake transistor, by means of which electrical current produced in the generator mode can be converted into heat, wherein
- the motor has a motor housing with an end face through which a motor shaft passes, the rotary body fastened to the motor shaft being arranged on the outside of the end face and the brake transistor being arranged on the inside of the end face.
Dependencies are inferred from the claim text.