Winding – tensioning – or guiding – Helical or random winding of material – Including particular material to spool connection
Reexamination Certificate
2000-06-29
2002-04-23
Mansen, Michael R. (Department: 3653)
Winding, tensioning, or guiding
Helical or random winding of material
Including particular material to spool connection
C083S168000, C083S174000, C242S473800, C242S487600
Reexamination Certificate
active
06375114
ABSTRACT:
BACKGROUND
The present invention concerns a process and apparatus for service at a workstation of a textile machine in which a thread is presented to a spool apparatus. The thread is captured by the spool apparatus and conducted to a thread cutting device to be cut through. The thread cutting device at specified intervals of time and/or in dependency of the execution of specified work phases is subjected to a cleaning operation.
In the case of textile machines with a spool apparatus, a full spool upon reaching a specified winding thickness is ejected from the spool apparatus and in its place an empty spool is inserted into the spool apparatus. Where open-end spinning machines are concerned, at this point a thread which has been previously winding and is now being carried in a suction stream is given over to the already driven spool apparatus, whereby it is necessary to break off the connection between thread winding on the new empty spool and the thread section which is moving in the suction line. For this operation, the spool apparatus possesses a thread cutting device which feeds the threads captured by a capture apparatus to the spool apparatus for the severing, whereupon the surplus thread section can be removed by the suction (DE 196 44 593 A1). Experience has demonstrated that the degree of efficiency of the thread cutting device deteriorates with time. On this account eventually upsets can occur wherein especially when instigated by the non-cutting of the thread, a section of thread remains which can be carried from the workstation to a mobile maintenance carriage which is serving in front of the concerned workstation. The said thread section can now extend itself over the area of several neighboring work places until the thread section either is pulled out of the suction, or as a result of its increasing tension the thread breaks at a random workstation. The thread end released in this manner can find its way into the rotating parts of the spool apparatus or into other elements of the textile machine which leads to the difficulty that the removal of the filled spool at a later time is made difficult.
SUMMARY OF THE INVENTION
Thus, it is the purpose of the invention to create a process and an apparatus with the aid of which the mentioned disadvantages are avoided and, for longer periods, a reliable cutting of the thread is achieved. Additional objects and advantages of the invention will be set forth in part in the following description, or may be learned through practice of the invention.
In accord with the invention, the stated purpose of the invention is achieved by the features of a process and apparatus for service at a workstation of a textile machine in which a thread is presented to a spool apparatus. The thread is captured by the spool apparatus and conducted to a thread cutting device to be cut through. The thread cutting device at specified intervals of time and/or in dependency of the execution of specified work phases is subjected to a cleaning operation. By means of the cleaning of the thread cutting arrangement, which is carried out from time to time, the consolidated depositions such as coatings and fiber remnants which have collected since a prior cleaning are again so quickly removed from the thread cutting device that heavy contaminations cannot occur to the extent that the thread cutting operation is impaired.
If the cleaning is carried out to include other specified phases of operation, then it is of advantage if in an inventive manner the cleaning of the thread cutting device is carried out before or after a thread transfer on the spool apparatus, and/or before or after the carrying out of a thread-connection procedure. Such cleaning as takes place at these other phase operations is so timed, that no interference which could lead to manufacturing disturbances occurs between said cleaning and the service operations.
A particularly intensive cleaning can be achieved by a method of procedure in accord with a process where the cleaning in relation to the thread cutting device is done in an oppositely set direction to the thread transport direction and/or, a process where the cleaning is executed in an intermittent manner.
Besides the thread cutting operation, the area of the spool apparatus proximal to the thread cutting device is, to a considerable degree, subject to dirt deposition. In order to create aid at this point, simultaneously with the cleaning of the thread cutting device additional elements of the spool apparatus are subjected to a cleaning. Also the elements of the spool apparatus in the hereto related neighborhood undergo a cleaning. By means of measures in accord with a process where the driveable elements of the spool apparatus to be cleaned are actively driven during their cleaning, the cleansing action in this particular cleaning relative to the additional elements of the spool apparatus can be improved.
The cleaning can be undertaken with the aid of various means among which are mechanical procedures. Respectively, in accord with the choice of cleaning elements or the means of cleaning in accord with the invention a further development of the invented process can be provided wherein the sharpening of the thread cutting device becomes integrated with the cleaning thereof.
For the execution of the described process, the features of an apparatus for the servicing of a workplace on a textile machine are provided. This includes a spool apparatus for the winding of a thread. From an operational position in which an empty spool or a spool inserted in the spool apparatus can be driven by a stationary drive roll, it can be brought into a thread transfer position. The spool apparatus possesses a driveable capture mechanism and a stationary thread cutting device opposite to the driveable thread capture mechanism. The thread to be cut is presentable by the rotation of the capture mechanism. A cleaning apparatus is assigned to the thread cutting device, and the coordination of the cleaning apparatus can be undertaken in various ways. Thus, it is not a requirement that the cleaning equipment be found immediately in the neighborhood of the thread cutting device. The invention also provides an apparatus where the cleaning apparatus by means of a relative movement between it and the thread cutting device can be brought into an operational position coactive with the thread cutting device. Relative motion between the two allows the cleaning operation to clean the thread cutting device. In doing this it is immaterial, principally, whether or not the thread cutting device is moved to the cleaning apparatus or vice versa.
In accord with a further design of the apparatus, the cleaning apparatus is located on a presentation apparatus which is placed on a mobile service carriage patrolling along a multiplicity of workstations of the textile machine. The cleaning apparatus is moveable out of an at-rest position into the operational position and back. By means of the movement of said presentation apparatus, the cleaning apparatus can be brought out of an at-rest position which is distant from the thread cutting device into an operational position close to the thread cutting device. This presentation apparatus can, essentially, be placed respectively at each spool position. However, based on savings in material and costs it is of advantage if this presentation apparatus is installed on a patrolling service carriage. In this case, it becomes advantageous if the presentation apparatus, now mounted on the service carriage, is furnished with an auxiliary drive for the spool or for the empty spool casing.
For the achievement of an optimal degree of efficiency in regard to production and maintenance, in accord with a further improvement of the object of the invention, the cleaning apparatus communicates with a controller. Also, with the aid of the controller it can be activated except during the time period during which the thread is presented to the capture mechanism and/or the equipment for the connection of a thread is active. Hence, the service equipment and the
Mayer Walter
Stephan Adalbert
Dority & Manning P.A.
Mansen Michael R.
Rieter Ingolstadt Spinnereimaschinenbau AG
LandOfFree
Process and an apparatus for the servicing of a textile machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and an apparatus for the servicing of a textile machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and an apparatus for the servicing of a textile machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2828856