Title of Invention	AN APPARATUS FOR COOLING OF JIGS DURING A MAGNETIZING OPERATION
Abstract	This invention relates to an apparatus for cooling of jigs during a magnetizing operation comprising at least one rotating disc having a plurality of magnet holding housings of mild steel; independent magnetizing jigs which operates one at a time in the cyclic order of 'a', 'b', 'c'., each jig having its independent pneumatic cylinders to operate the jig.

Full Text

FIELD OF INVENTION This invention relates to an apparatus for cooling of jigs during a magnetizing operation. BACKGROUND OF INVENTION As known in the art, magnets are subjected to the step of magnetization. However, during such a step of magnetization, the jig gets heated due to the presence of energy. Due to the presence of such heat, it is not possible to magnetize another magnet immediately, as it then results in the loss of magnetic properties of the magnet Thus, some cooling device is required to cool the jig immediately, as it is not possible to disperse the heat in the short time of 2 sees.. OBJECTS OF THE INVENTION Therefore an object of this invention is to propose a cooling system for jigs which get heated during the process of magnetization by using a plurality of magnetizing probes, functioning one alter one at a time and thereby providing natural atmospheric cooling during the intervening periods that the other jigs are being magnetized. Another object of this invention is to propose a cooling system for jigs during magnetizing which is of low cost in nature and fabrication process is very simple. Yet another object of this invention is to propose a cooling system for jigs during magnetizing which increases the efficiency of the system. A still further object of this invention is to propose a cooling system for jigs during magnetizing is thermal shock resistant and capable of withstanding longer working cycle. Yet a further object of this invention is to propose a cooling system for jigs during magnetizing which has a long life and work for a substantial period of time without any maintenance DESCRIPTION OF INVENTION According to this invention, there is provided an apparatus for cooling of jigs during a magnetizing operation comprising: i) at least one rotating disc having a plurality of magnet holding housings of mild steel; ii) independent magnetizing jigs which operates one at a time in the cyclic order of 'a', 'b', '.\, iii) each jig having its independent pneumatic cylinders to operate the jig. Basically the apparatus utilizes two indexed discs- one for handling motor magnets and other for outer casing, the magnet disc get loaded by a magnet one by one from magazine of magnet stacked in a vertical column and undergo magnetization at three station and a flux check. The three magnetizing jigs with their own independent charging units charges the magnets in the succession of cyclic order, a, b,c , a,b,c, and interval of about 2 secs...Between consecutive charging ensure high through put while a 6 secs. Gap between two charging by a given jig ensures adequate cooling instead use of 3 independent magnetizing machines. The use of one machine for each jig also enables individual setting of energy levels to suit their respective jig for the desired flux and uniformity of flux irrespective of a jig. The system has been designed in a manner that after magnetizing in jig 'a', the 'a' jig will be re-operated after performing magnetizing in jig 'b', then jig 'c', by this arrangement the jig 'a' get 2 operations free, with two free cycles the jig disperse the heat to the atmosphere and get adequate cooling. This order also works identically for jig 'b' and 'c' due to this arrangement every jig get 6 secs.. Time to cool off, which is sufficient cooling time. This order also provide adequate cooling to the jig to be utilized again and again for substantially long period of time. In this invention magnet housing have been mounted on indexing disc of equipispaced angle of 60° and on identical pitch circle dia. Magnets get placed into the housing one after one. When a magnetizing probe initiate the magnetizing other two probes respectively b and V remain off, after 'a' probe, b probe initiate magnetizing and 'a' and c remain off, then V probe initiate magnetizing then 'a' and V remain off this order help into extend the cooling time to each jig by 6 sees. Whereas magnetizing interval of magnet to magnet is 2 seconds. The other advantage of this process is that no magnet passes uncharged and no magnets get charged twice. DESCRIPTION OF INVENTION WITH REFERENCE TO ACCOMPANYING DRAWINGS Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawings and wherein : Fig.l shows the cooling system of the present invention; Fig.2 shows the flow sheet. The drawings illustrate two rotary discs RD1 and RD2 and each disc has three jigs, jig a, jig band jig c. Each of the jigs has a pneumatic cylinder PC for raising or lowering of a magnetic probe MP. Each of the jigs also comprise a magnetic housing MH with amagnetM. Referring to Fig.l, the machine utilizes two indexed discs A1and A2- one for handling motor magnets and other for outer castings. The magnet disc get loaded by a magnet one by one from a magazine of magnet stacked in a vertical column and undergo magnetization at three stations having jigs a,b and c and a flux check. The three magnetizing jigs a,b and c with their own independent charging units charges the magnets in the succession of cyclic order a,b,c , a,b,c, an interval of about 2 sees.. Between consecutive chargings ensure high through put while a 6 sees, gap between two chargings by a given jig ensures adequate cooling use of 3 independent magnetizing machines the need for changing while at the time their low duty cycle ensure long trouble free operation. The use of one machine for each jig also enables individual setting of energy levels to suit their respective jig for the desired flux and uniformity of flux irrespective of a jig. Fig.2 shows the sequential steps as a flow chart. WE CLAIM: 1. An apparatus for cooling of jigs during a magnetizing operation comprising: i) at least one rotating disc having a plurality of magnet holding housings of mild steel; ii) independent magnetizing jigs which operates one at a time in the cyclic order of 'a', 'b', 'c', iii) each jig having its independent pneumatic cylinders to operate the jig- 2. An apparatus for cooling of jigs during a magnetization as claimed in claim 1 comprising a first rotary disc for motor magnets and a second rotary disc for outer casings. 3. An apparatus for cooling of jigs during a magnetization as claimed in claim 1 wherein said disc has holders equally disposed from each other. 4. An apparatus for cooling of jigs during a magnetization as claimed in claim 1 comprising three jigs. 5. An apparatus for cooling of jigs during a magnetizing operation substantially as herein described and illustrated.

Documents:

677-DEL-2002-Abstract-(06-11-2007).pdf

677-DEL-2002-Abstract-(18-09-2008).pdf

677-del-2002-abstract.pdf

677-DEL-2002-Claims-(06-11-2007).pdf

677-DEL-2002-Claims-(18-09-2008).pdf

677-del-2002-claims.pdf

677-del-2002-correspondence others.pdf

677-del-2002-correspondence po.pdf

677-DEL-2002-Correspondence-Others-(06-11-2007).pdf

677-DEL-2002-Correspondence-Others-(18-09-2008).pdf

677-DEL-2002-Description (Complete)-(06-11-2007).pdf

677-DEL-2002-Description (Complete)-(18-09-2008).pdf

677-del-2002-description (complete).pdf

677-DEL-2002-Drawings-(06-11-2007).pdf

677-DEL-2002-Drawings-(18-09-2008).pdf

677-DEL-2002-Form-1-(18-09-2008).pdf

677-del-2002-form-1.pdf

677-del-2002-form-18.pdf

677-DEL-2002-Form-2-(18-09-2008).pdf

677-del-2002-form-2.pdf

677-del-2002-form-3.pdf

677-DEL-2002-GPA-(18-09-2008).pdf

677-DEL-2002-GPA-(23-10-2008).pdf

677-DEL-2002-Petition-137-(18-09-2008).pdf

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