Trutzschler Gmbh & Co Kg

Fritz P Hosel

Ferdinand Leifeld

Josef Temburg

Hans-Jurgen Marx

Andreas Kranefeld

Reinhard Hartung

Ernest W Kuppers

An apparatus for depositing sliver in a coiler can includes a pair of cooperating pressure rolls; a coiler head rotating about a rotary axis and having a sliver inlet for receiving sliver from the rolls and a sliver outlet situated eccentrically with respect to the rotary axis for discharging sliver from the coiler head; a movable coiler can platform disposed underneath the coiler head for receiving an upwardly open coiler can thereon; and a severing device for severing the sliver at a location downstream of the rolls as viewed in a direction of sliver run. The position of the sliver outlet on its circular path, the position of the platform in its motion path and the running length of sliver are determined. Based on these data rotation of the coiler head is stopped when the sliver outlet is in a position corresponding to a predetermined total sliver quantity in the coiler can less a trailing terminal sliver length portion, the platform is moved in a stopped state of the coiler head such that the coiler can outline is out of vertical alignment with the coiler head, whereby a trailing length portion is deposited in the coiler can and a part of the trailing length portion hangs over a top wall edge of the coiler can.

Method and apparatus for depositing sliver in a coiler can

A drawing frame includes an inlet measuring organ sensing a property of a plurality of slivers as they are simultaneously introduced into the drawing frame and emitting a measuring signal representing a magnitude of the property; a regulating drawing unit including a plurality of drawing rolls defining a drawing region along which the slivers are drafted as they run through the drawing frame, a drive for rotating the drawing rolls and a control arrangement for regulating the drive as a function of the measuring signal for varying the draft of the slivers in the drawing region such that mass fluctuations in the slivers are equalized. The control arrangement changes the measuring signal into an actual control signal as a function of operational conditions to compensate for influences derived from the operational conditions and affecting measuring results. The control signal is applied to the drive.

Regulating drawing unit for a sliver drawing frame and regulating method

An apparatus for depositing sliver in a coiler can includes a pair of cooperating pressure rolls; a coiler head supported for rotation about a rotary axis and having a sliver outlet situated eccentrically with respect to the rotary axis; a movable coiler can support disposed underneath the coiler head for receiving an upwardly open coiler can thereon; and a drive for rotating the pressure rolls, for rotating the coiler head and for moving the coiler can support to advance the sliver through the pressure rolls into the coiler head and to deposit the sliver in an annular pattern into the coiler can. A control and regulating device is electrically connected to the drive and stops rotation of the coiler head at a predetermined location of the sliver outlet on its circular path while the pressure rolls continue to rotate and the coiler can support continues to move. A severing device is further provided for severing the sliver to produce an outer sliver end of the sliver deposited in the coiler can.

Coiler head stoppage while depositing sliver in a coiler can

An apparatus for arranging fiber bales to form a first, operational bale row in preparation for detaching fiber tufts by a bale opener. The apparatus has a conveying device for receiving fiber bales thereon in a second, standby row; a transporting device for consecutively carrying fiber bales along the conveying device for forming the second row thereon such that a width of the fiber bales on the conveying device extends parallel to the advancing direction; a transfer device for separating a momentarily leading fiber bale of the second row at the output end of the conveying device from the fiber bales remaining thereon and for transferring the separated fiber bale to a location receiving the fiber bales of the first bale row; a device for determining the width and ranking of each fiber bale while on the transporting device or the conveying device; a device for generating signals representing the width and ranking; a memory for storing the signals; and a device for determining, based on the signals, the extent of feed for each bale from the conveying device to the transfer device.

Method and apparatus for arranging fiber bales in a single row in

An apparatus for braking a rotary component of a fiber processing machine includes an asynchronous motor having a stator winding and an output shaft connected to the rotary component; a direct current generating device having an output connectable to the stator winding for applying an electric braking torque to the motor; and a switching arrangement for selectively connecting the stator winding to an alternating current source for normally driving the motor or to the output of the direct current generating device for electrically braking the motor.

Method and apparatus for braking a rotary component in a textile fiber

A textile machine has a rotary part, an openable and closable cover having a closed position in which access to the rotary part is prevented and an open position in which access to the rotary part is allowed. There are further provided a lock having a bolted position in which the cover is locked in the closed position and an unbolted position in which the cover is allowed to be moved into the open position and a standstill monitor for sensing rotation and standstill of the rotary part. The standstill monitor is connected to the lock for placing the lock into the bolted or unbolted position. The standstill monitor comprises an incremental rotary sensor coupled to the rotary part and controlling the lock.

Rotation and standstill responsive locking device for an access door of

A fiber storing device includes an inlet for charging the device with fiber material and an outlet for withdrawing fiber material therefrom. The fiber storing device is associated with an apparatus for determining the fill level of fiber material in the storing device. The apparatus has an optical device which comprises a light emitter and a light detector and which is situated above an expected maximum fill level of the fiber material. The light emitter is arranged to direct, from above, a light beam onto an upper face of the fiber material and the light detector is arranged to receive a light beam reflected from the upper face of the fiber material.

Apparatus for detecting the fill level in a fiber storing device

Apparatus and method for detecting sliver feed or standstill uses comparative measurements over a time-lapse to determine sliver movement. An identical reading in two or more sequential measurements indicates the sliver is not being conveyed, that is, it is either lying motionless or is absent altogether. Signals relating to the sensed standstill may be further processed in the machine control. The sensors are measuring elements capable of detecting thickness of the sliver and may be mechanical, optical or the like.

Method and apparatus for detecting sliver feed

A system for removing foreign metal bodies from a pneumatically conveyed stream of fiber material includes a fiber conveying duct in which the fiber material is pneumatically advanced; a branch-off location in the duct; a branch conduit joining the duct at the branch-off location; a metal detector for ascertaining the presence of a foreign metal body in the stream of fiber material at a sensing location upstream of the branch-off location; a channelling device arranged in the branch-off location for selectively directing the fiber stream into the branch conduit or, respectively, causing the fiber stream to continue travel in the duct past the branch-off location; a control device operatively connected to the metal detector and the channelling device for moving the channelling device into a removal position upon ascertaining the passage of a foreign metal body by the detector; and at least one bend in the duct for changing the direction of travel of fiber material in the duct. The bend is situated between the branch-off location and the sensing location.

Apparatus for removing foreign metal bodies from a fiber transporting

An apparatus for generating measuring values representing the thickness of a coherent fiber material, includes an optical device having a light transmitter emitting a light beam and a light detector, an arrangement for guiding the fiber material between the light transmitter and the light detector and a device for processing signals generated by the light detector. The light detector comprises an image processing CCD member aligned with the light beam emitted by the light transmitter.

Method and apparatus for obtaining measuring values representing the

A carding machine has a main carding cylinder, an electromotor drivingly connected to the carding cylinder and a control device, including a memory, for controlling the rpm of the carding cyliner. The main carding cylinder has a starting phase during which the main carding cylinder is accelerated to a working rpm and a stopping phase during which the main carding cylinder is decelerated from a working rpm to standstill. The method of operating the carding machine includes the steps of storing in the memory material-specific sets of rpm values for the starting phase and sets of rpm values for the stopping phase; and controlling the rpm of the main carding cylinder in the starting and stopping phases by the control device in accordance with respective rpm values stored in the memory.

Method for improving the carding process of a card or a roller card unit

An apparatus which determines quantities of textile fiber material during conveyance thereof by an air stream through a duct, includes a sensor unit situated at the duct and arranged for monitoring the stream flowing through the duct and composed of a fiber/air mixture. The sensor unit comprises a plurality of side-by-side situated light emitters forming an emitter bank and a plurality of side-by-side arranged light detectors forming a detector bank. The detector bank is situated spaced from and opposite to the emitter bank for providing a passage for the stream therebetween.

Apparatus for determining quantities of fiber conveyed through a duct

A method of calibrating and adjusting an apparatus for determining the fill level of a selected specific fiber material in a filling chute of a fiber storing device. The apparatus includes an optical device situated above an expected maximum fill level in the filling chute and having a light emitter arranged to direct a light beam from above onto an upper face of the fiber material and a light detector arranged to receive a light beam reflected from the upper face, a microcomputer, including a microprocessor, operatively connected to the apparatus for receiving detector signals from the apparatus. The calibrating method comprises the steps of providing two vertically spaced fixed markings on a side wall of the filling chute; charging the filling chute with a fiber material of a specific type; generating detector signals when the level of the fiber material in the filling chute reaches the lower and the upper marking, respectively, whereby the generated detector signals represent two known height levels of the fiber material of specific type; and storing the generated detector signals in the microcomputer, whereby calibration of the apparatus for the fiber material of the specific fiber type is obtained.

Method of calibrating an apparatus for detecting the fill level in a

A method of operating a bale opener having a carriage arranged for back-and-forth travel along a plurality of serially arranged fiber bales, a tower mounted on the carriage, a cantilever supported by the tower and projecting generally laterally therefrom, an opening device accommodated in the cantilever and arranged for removing fiber from bale tops, and a sensor arranged to travel in a path along the fiber bales. The method includes the steps of sensing the presence of a length boundary of the bales by the sensor and applying first signals, representing such presence, to a control device. The sensing step comprises the step of sensing the bale boundary by the sensor directly. The method further comprises the steps of determining positions of the sensor along its path of travel, applying second signals representing such positions to the control device, and comparing the first and second signals in the control device for determining locations of length boundaries of the bales along the path of travel of the bale opener.

Method and apparatus for operating a bale opener as a function of bale

A bale opener includes a carriage arranged for a back-and-forth travel in a path along a fiber bale series; a tower supported on the carriage and a cantilever mounted on the tower and arranged for vertical displacements with respect to the tower, an opening device supported in the cantilever and arranged for removing fiber from the bale tops during travel of the carriage; a sensor assembly arranged for travel along the fiber bale series for emitting first signals characterizing bale heights; and a control device operatively connected to the sensor assembly for receiving the first signals. The sensor assembly comprises two sensors mounted on the tower or the cantilever and spaced vertically from one another. There is further provided a length position determining device for generating second signals representing longitudinal positions of the cantilever along the travel of the carriage. The length position determining device is connected to the control device for receiving the second signals.

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Monchengladbach, Germany

Fritz P Hosel