US2662693A - Counter for coil winding machines - Google Patents

Description

Dec. 15, 1953 w. SlVO ET AL COUNTER FOR COIL WINDING MACHINES Filed May 19, 1951 'ullllllllll' INVENTORS W. SIVO H. S. WALENDZIK ATTORNEY Patented Dec. 15, 1953 2,662,693 COUNTER FOR COIL WINDING MACHINES Walter Sivo, Georgetown,

zik, Danbury, Conn.,

New York and Henry S. Walendassignors, by mcsne assignments, to Western corporated, New York, N. Y., a corporation of Electric Company, In-

Application May 19, 1951, Serial N 0. 227,194 4 Claims. (Cl. 235-92) This invention relates to counters for coil winding machines, and more particularly to counters for the slider type toroidal winding machines.

Toroidal winding machines are employed in Winding coils of insulated electrical conductors on annular cores, and include shuttles usually equipped with removable segments so that the annular cores may be singly mounted for the shuttle to travel therethrough about its axis. Such a shuttle is filled with a supply of insulated wire sufiicient to form a coil on the core, and the leading end of the wire is threaded on the core. If the machine is of the slider type, that is, if it employs a wire guide slidably mounted on the shuttle for movement therewith and relative thereto. the wire is threaded through the usual groove in the guide or slider.

In the present state of the art, it has been difficult to count the exact number of turns which the slider winds on the core. This condition has existed because, while the shuttle rotates at a constant rate of speed during the winding of the coil, the slider slips backwards on the shuttle an amount sometimes equal to the length of one turn of the coil during each revolution oi the shuttle, giving the slider a constantly varying rate of speed. It has been proposed to provide a counter and means operable by the loop of wire between the core and the slider, but no apparatus sufficiently sensitive to be consistently actuated by the loop has been provided hitherto.

An object of the invention is to provide new and improved counters for coil winding machines.

Another object of the invention is to provide a counter for a coil winding machine which is sensitive, simple in structure and highly accurate in counting the exact number of turns wound on a core.

A counter illustrating certain features of the invention may include an abutment positioned in the path of a strand being wound around a core, a flared shoe, means urging the shoe toward the abutment, a counter, means for operating the counter, and an arm carried by the shoe for actuating the counter-operating means when the shoe is moved away from the abutment by a 1001) advanced between the abutment and the shoe.

A complete understanding of the invention may be obtained from the following detailed description of a counter forming a specific embodiment thereof, when read in conjunction with the appended drawing, in which:

Fig. 1 is a fragmentary vertical section of a 2 toroidal winding machine including a counter embodying the invention, and

2 is a fragmentary horizontal section taken along line 2-2 of Fig. 1.

Referring now in detail to the drawings, there is shown therein a toroidal winding machine including a, clamp id for holding an annular core i l during the winding of a given number of turns of insulated wire I 2 upon approximately one-half of the core also for supporting the partially wound core during the winding of convolutions of tie wire upon the other half of the core. The clamp is rocked the centerline of the core in the conventional manner during the winding operations. The machine includes a shuttle 14 having a section closed by a removable segment i5 after the core has been mounted in the clamp ill. The shuttle M has an annular track is completed by the segment [5, and has a supply of the wire I 2 thereon prior to the operation of the machine to wind the convolutions of the wire on the core. The shuttle is supported by rollers ll--I'l and a driving gear it, which engages teeth l9| 9 on the inner periphery of the shuttle hi and its segment IS. A driving shaft 2: for the gear I3 is driven by suitable means (not shown).

A switch 22 including a rigid contact arm 23, a spring contact arm 24 and a block 25 of electrical insulating material is mounted on one end of a torsion spring 26 fastened and mounted at its other end to a fixed post 28. The spring urges the switch in a clockwise direction, as viewed in Fig. 2, to hold the contact arm 23 against a thumb screw 2s supported by a bracket 38 rigidly secured to the base 3| of the machine. An arm 32 mounted pivotally on the post 28 is urged by a torsion spring 33 in a counterclockwise direction to press an elongated shoe 34 against a boss 35 having a rounded edge. The shoe 34 is mounted pivotally on the arm at the central portion of the shoe. The shoe is pro vided with a straight central portion 38 and rocker- like end portions 37 and 38. A switchclosing arm 4% fastened rigidly to one end of the shoe carried an insulating presser El thereon.

The wire l2 (Fig. 1) is revolved around the core by the shuttle M, and is payed off the shuttle by a slider 53, the operation of which is such that a loop of the wire is formed for each complete revolution of the slider. Each loop is pulled laterally of the wire between the boss 35 and the shoe 34. At first, the wire pushes the righthand end of the shoe, as viewed in Fig. 2, away from

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