US2427705A - Pin setting machine - Google Patents

Description

Sept. V23, E947. I `l.. ll BLUM, JR 2,427,705

PIN SETTING MACHINE I fnl/Mow- 15 LOLLEBQUnJT- Patented Sept. 23, 1947 PIN SETTING MACHINE Louis E. Blum, Jr., Newark, N. J., assignor to Breeze Corporations, Inc., Newark, N. J., a corporation of New Jersey Application March 18, 1944, Serial No. 527,379

Claims.

l This invention relates to mechanisms for uniting terminals to electric conductor wires, particularly such as are enclosed with a protective sheath.

An object oi the invention is to provide a simple, pedally operated machine capable of inserting a wedge-like plug into a collar, through which the wires extend, to maintain them firmly therein, the collar then serving as a wire terminal.

A further feature is in the provision of means for semi-automatically adjusting the collars, into accurate registration with a revoluble head, carrying the plugs, and also drivers, in alternate relation to seat the plugs.

Another purpose is to produce a machine of such simplicity as to be easily operated by unskilled labor, in an effective, speedy manner whereby the assembly of parts are accurately accomplished.

These and other similar objects are attained by the novel construction, combination and arrangement of parts hereinafter described rand shown in the annexed drawings, forming a graphical component of this disclosure, and in which:

Figure l is a perspective view of a complete embodiment oi the apparatus.

Figure 2 is a top plan view of the same, partially in section.

Figure 3 is a front elevational View of the same in a downward position, partially in section, and illustrating its application.

Figure 4 is a perspective View of the revoluble head carried by the press, drawn to an enlarged scale.

Figure 5 is an enlarged transverse sectional View taken on line 5-5 of Figure 3, showing the head in a raised position.

Figure 6 is a longitudinal sectional View of a terminal lead `assembly showing the work perfonmed by the press.

Figure 7 is a transverse sectional View taken on line 'l-l of Figure 6, drawn to an enlarged scale.

Figure 8 is a sectional view of a modied pin holding die.

By reference to the drawings it will be seen that the mechanism includes a common type of pedally operated bench press, consisting of a base l5, adapted to be secured upon a bench, having a raised, forwardly reaching arm I6 terminating in an expanded head ll extending over the base.

The head is recessed vertically to slidably receive a plunger or ram i8, of rectangular cross section, held in place by a cap i9, and provided with a rack 2G engaged by a spur gear 2l, xed on the end of a shaft 22, journalled in the head and extending laterally outward at the rear where it has secured on it `a cylindrical hub 23.

Passing through the hub is a bar 24 having connected at its front portion a clevis 25, from which extends a rod 26 leading to a foot lever (not shown) below the bench; the opposite, upwardly bent rear portion 24 of the bar has attached to it a coiled tension spring 2'! by which the plunger i8 is normally maintained in a raised position, the opposite end of the spring being engaged in an adjustable screw 28 set in a bracket 29 carried by the base l5. A stop bar 3B, set in the arm I6, limits the upward motion of the plunger.

A bracket 3|, xed on the upper end of the plunger i8, carries an adjustable stop screw 32,

which, fupon contact with the upper surface or the head Il, limits the downward movement of the plunger.

The structure described in the foregoing is well known and recited merely in order that a comprehensive understanding of the invention be had.

The lower end or the plunger i8 is bored axially to receive the shank 33 of a forked bearing 3P, in which is rotatably mounted a transverse spin-- dle 35, having xed on its front extremity a knurled knob 36 and on its opposite end a disc 3l having equally spaced notches 38 adapted for engagement by a spring detent 3S carried by the upper part of the bearing.

Keyed to the central portion of the spindle 35, `between the :forks of the bearing Si, is a circular, non-magnetic wheel 4B having in its periphery an even number of radial, evenly spaced sockets 4l, six being shown, in correspondence with the notches in the disc 3l.

Set in each alternate socket is a magnet 52, and having an axial aperture 43, while in each intermediate socket is a similar fiat faced driver die 44. In the modification shown in Figure 8, the die 42 is not magnetized but provided with an elastic collar 51, as rubber, having a small opening to receive the shank of the pin 54 with suincienl-l tension to retain it in position for insertion in the bushing 53.

Secured on the raised forwardly extending portion of the base I5 is a plate 45 having a narrow extension 46 reaching beyond the edge of the base and provided with an open recess 4l in register with the plunger I8.

Rigidly xed on the plate is a bracket 48 having, in its raised upper portion, a V-shaped guide notch 49 adapted to aline a work-part with the dies carried by the wheel 40.

The Work, as indicated in Figures 3, 6, 7 and 8, consists of a cable 59 having a plurality of wires I and tted with an insulating terminal 52, provided at its outer end with an opening suited to receive and retain a anged metallic bushing 53, through which the wires pass to be secured thereover, at their bent ends, as by a wedge-like, hard steel pin 54 having a sharply tapered point 55.

In operation, a anged collar 56 is loosely drawn over the cable (see Figures 3 and 5), below the cable terminal 52, to rest on the plate Z5-46, in the recess 49, the terminal being further guided and alined by the angular notch 49, to register with the dies in the revoluble Wheel 40.

Steel pins 54 are inserted in the magnets 42 with their points Outward, the pins being retained by magnetism. Upon the first downward stroke of the plunger, a pin is entered sufficiently into the bushing 53 to be retained by friction upright therein.

The second operation is to turn the wheel 49, bringing one of the driver dies 44 into position to set the pin, and then, by action of the press treadle, force it into the bushing, thereby clamping the wires therein, as indicated in Figure '7, allow the Wheel carrying plunger to rise, remove the cable with its attached terminal and repeat the performance as required.

It is found in practice advisable to group the several wires at one side of the bushing 53 and bend their projecting ends sharply outward, as indicated in Figure 6, previously to the insertion of the pin.

Although the foregoing is descriptive of a specific purpose, it will be understood that the invention is not so conned, as it is apparent many other uses of a similar nature can be accomplished by the mechanism included in the appended claims.

Having thus described the invention and set forth the manner of its construction and use, what is claimed as new and sought to be secured by Letters Patent 0f the United States is:

1. In mechanism for setting pins in apertured elements, a reciprocably slidable, rotatable wheel having holding means to carry pins and partially drive them, means to rotate said Wheel to a position to fully drive said pins, means intermediate said holding means to fully drive the pins, and means to locate the elements in position to receive the pins.

2, In mechanism for setting pins in apertured elements, the combination with a press having a base and a reciprocable plunger, a forked bearing fixed in the bottom of said plunger, a transverse spindle having means for rotation in said bearing, a wheel fixed on said spindle, magnetized dies set in spaced apart relation in the periphery of said wheel to hold and partially drive said pins, means to rotate said Wheel to a position to fully drive said pins, driver dies intermediate of said rst named dies to fully drive the pins, and means on said base to register the elements with the axes of said dies.

3. In combination With a stamp press having a base, a plunger, and means to actuate the plunger, a Work-part positioning device on said base, a non-magnetizable Wheel rotatable in a vertical plane on said plunger, said wheel having radial peripheral sockets equally spaced therearound, a magnetic die set in each alternate socket adapted to engage a pin and partially drive said pin, driver dies set in the intermediate sockets to fully force such pin into the Workpart, a knob to turn said Wheel, a star wheel corresponding to the rst named wheel, and a spring detent to engage said star Wheel.

4. In combination with a stamp press having a base, a plunger, and means to actuate the plunger, means on said base to locate a Workpart in register with the plunger, Wheel of nonmagnetic material mounted for rotation in said plunger, an even number of uniformly spaced radial sockets formed in the periphery of said Wheel, means to rotate the Wheel to bring any selected socket into alinement with a Work-part on said base, a magnetized die xed in each alternate socket to maintain a pin therein until partially entered in the work-part, and driver dies fixed in the intermediate sockets to fully force the pin into its nal position in the Workpart.

5. In mechanism for setting pins in apertured elements, the combination of a rotatable wheel having a plurality of spaced apart apertures, resilient means on the wheel provided with apertures aligned with said spaced apertures, said resilient means being arranged to grip and retain pins inserted into said spaced apertures until partially driven into the work-part, means to rotate said wheel to a position to fully drive said pins, means intermediate said spaced apertures adapted to fully drive the pins, means to locate the elements in position to receive the pins, means for supporting the wheel for rotation and means to reciprocate said supporting means.

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