|Title of Invention||
AN AUTOMATIC DEVICE FOR RING CENTERING IN A RING AND TWISTING MACHINE
|Abstract||This invention relates to an automatic device for ring centering irt a rirlg and twisting machine. It consists of control and program means for automatically engaging and disengaging the drafting drive and the ring rail drive, disconnecting and connecting the power supply raisirlg and lowering the ring rail to the desired position to enable ring cerlterirtg and restoring the machine after ring centering. Acutating means are provided for actuatirlg the steps initiated by the control means.|
|Full Text||This invention relates to a device for ring centering in a ring and twisting machine. Ring centering is a process carried out during connissioning of a ring or twisitng frane. Ring centering step is periodically repeated during maintenance operation and during installation of a new ring in the place of an old ring.
The step of ring changing involves a number of operations that require preliminary work. For example the drive to the drafting system must be disengaged, the drive to the ring rail must be disengaged, power supply to the relevant machine parts must be stopped, the ring rail must be raised to the desired position, and the spindle speed must be regulated. The operator has to rotate the lappet assembly manualy during these operations. After completion of the process of ring centering, these sequence has to be repeated and the machine reset to the desired starting position before commencing spinnin operations. Manual operation of these sequences increase the downtime of the machinery leading to production losses. The present system is also labour intensive in nature.
Automatic electronic control and programming of the exisitng system developed by us simplifies the ring changing operations resulting in reducing downtime and increasing production output. Other advantages of automatic centering are case of operation and reduction of human errors and inaccuracies.
The /device for ring centering in a ring and twisting machine according to this invention comprises progran means, control neans, actuator means and authentication means, said program means and control means actuating said actuator means to disengage the drafting drive and the drive to the ring rail, disconnecting power supply to suction means, raising the ring rail to the desired position and setting the spindle speed to enable ring centering and thereafter repeating the sequence to reset the machine to its original position.
The program means may also be provided with anti-balloon control ring centering program which is operable either prior to or after ring centering. The program and control means may also be provided with programs for lifting and tilting the lappet for ring centering.
Authentification means are provided for enabling only autheentioated persons to operate the machine with the help of a selected pass word.
Known control means, program means and actuating means are usable in this system which may be programmed to function as desired.
WE CLAIM :
1. An automatic device for ring centering in a ring and twisting machine
comprising program means, control means, actuator means and
authentication means, said program means and control means actuating
said actuator means to disengage the drafting drive and the drive to the
ring rail, disconnecting power supply to suction means and raising the
ring rail to the desired position to enable ring centering and thereafter
repeating the sequence to reset the machine to its original position.
2. The device as claimed in claim 1, wherein the program means is provided
with anti balloon centering program.
3. The device as claimed in claims 1 and 2, wherein the program and control
means are provided with program for lifting and fitting the lappet for ring
4. An automatic device for ring centering in ring and twisting machine
substantially as herein described.
|Indian Patent Application Number||178/MAS/1999|
|PG Journal Number||27/2006|
|Date of Filing||11-Feb-1999|
|Name of Patentee||M/S. LAKSHMI MACHINE WORKS LIMITED|
|Applicant Address||PERIANAICKANPALAYAM, COIMBATORE 641 020|
|PCT International Classification Number||D01H 7/04|
|PCT International Application Number||N/A|
|PCT International Filing date|