US2541517A

US2541517A - Can discharging and sorting mechanism

Info

Publication number: US2541517A
Application number: US581849A
Authority: US
Inventors: Jecusco Mark
Original assignee: Victor Metal Products Corp
Current assignee: Victor Metal Products Corp
Priority date: 1945-03-09
Filing date: 1945-03-09
Publication date: 1951-02-13
Anticipated expiration: 1968-02-13

Description

Feb, 13, 1951 M. JECUSCO CAN DISCHARGING AND SORTING MECHANISM Filed March 9 1945 2 Sheets-Sheet l DINVENTOR.. Mark dgcwm M Q a ATTORNEY I Feb. 13,- 1951 M, JECUSCO 2,541,537

CAN DISCHARGING AND SORTING MECHANISM Filed March 9, 1945 2 Sheets-Sheet 2 IN V EN TOR.

Mark Jecusco TTORNE'Y Patented Feb. 13, 1951 UNITED STATES PATENT E1? ICE,

CAN DISCHARGING AND \SORT-ING MECHANISM 8 Claims; (Cl. 209"-82)1 This-invention relates to mechanism for-making small one-piece metal cans or vials andparticularly to the means for forwarding normal cans 'andrejecting defective or crushed Work.

The invention contemplates-theprovision of simple pneumatically operated means cooperating with the press inwhich the cans are-formed for automatically, ejecting damaged cans during the movement of'th'ecans to'the' conveyor-on which the cans-are degreased.

The various objects of the invention will be clear-- from" the description which follows and from'the'drawings, in which,

Fig." 1 is a largely diagrammatic front view' of a machine embodying the invention.

Fig. 2"is-a side view partly in section, of part ofthe press and of the pneumatically operated guard'gate for automatically ejecting a damaged camshowing indash-dot lineshow the gate opens to'permit a damaged can to pass the gate and to by-pass the loading chute.

Fig. 3 is a similar View of the-guard gate and loading, chute showing how normal cans'fail to open the-gate completely-and thereby are positioned'to roll into and'dov/n thechute;

Fig; 4'is'a combined vertical sectionand front view'of the gate chamberandof-the-chute to which "it. leads.

5' isa'lon'gitudinal sectional viewof the tube leading'from the press," showing how partof'theair blast passes a'normal ean and exerts a comparatively small force on thegate.

Fig. dis a similar viewof the same showing how the air.'blast is almost entirely obstructed by a damagedcan in the tube to exert a considerable force on said can.

In general, my improved machine comprises a conduit or tube leading from the press and terminating inva chamber whichis providedwvith a hinged gate and which communicates with a chute. Air pressure in the tube and gravity move the can from the pressinto the chamber.

If the can isdamaged, the damaged can, under the higher. pressure thereon, strikes the gate with. sufiicient force to open the gate enough to permit ejection ofthe damaged can therepast. Ifthe canis normal, the gate opens only slightly and-insufficiently, to permit the discharge of the normal can, which rolls into theohute.

Inthe practical embodiment of the invention shown by way of example, the press iiiis of any suitable type, being provided with a series of progressive cooperating blanking and. drawing dies-of which the male dies as l l2, [3, M and iii, are shown, such dies and presses being well'known in" the art; A''- blank isdrawnprogressively-hr the-required number of stages by the dies'into' the formof a can as Shaving one closed end" and'an open end, thework beinglubricated-in the usual manner if desired.

The last operating male die i5 has an axial air passage It therethrough (Fig. 2), suppliedwith air under pressure by means of the' hose lli from asource of compressedain A'suitable-valve suchas the welldznow-n Schrader valve maybeinterposed'in the air'supply'lineto the hose;

and may'be'operated in'anywell known manner to open at'the requiredtime, the valve an'd its operating means beingwell "understood and hence need no illustration. Byany suchmeans, a'blast of air is supplied to the passage" is of the'die i5' onthe downstroke of the press.

A suitable L-shaped can guide andiorwarding tube'is arranged with its vertical part ifiin eoaxialalignment with the die and in position to'receive thereinto the 'air'blast from the die.

'Iheinner'diameter of" the tube issubstantiallygreater than the outer diameter of'the-can which slides therethrough (Fig. 5.)

the downwardly moving die, starts the can moving along the vertical part it of the tuber Because ofthe relativediameters of thecan and. the tube; anormal can moves easily through the tube by-gravity largely. The exit or discharge end of the horizontal part Zfiofthe tube-com municates with the chamber 2!; which is-preferably formed with a top wall 22; a'rear wall. 223

to which the tube part 253 is connected and'an optional side wall 2d: The front wall of the cham-- ber, however, is not fixed, but takes theform of the weighted. gate 25'hinge'd to'the'top wall 22 by means of the hinge 2%.

Normally, the gate25 is in-the"elosed' position movement of the gate is insufficient to allow the can to move out of 'the chamber 2|. When the air blast'is out off on the upstroke of die it; the gate 25 closes of its ownweight and moves the can back into the chamber as shown by the dotted lines of Fig. 3. The can then rolls down along, the inclined bottomll of'thechamberon to the downwardly inclined chute '28"which is The finished-can? havingjbeen' deposited-in the'entrance' end-"of the tube 58, the blast from th'e die it," aided-by- However; that part of interposed between the gate and the adjacent end of the tube part 20 and leads generally in a direction perpendicular to the tube. Said chute has upstanding side Walls 29 thereon suitably cut away at their ends to permit the can to move into and out of the chute in a manner soon to be described.

Should the can have been damaged by the press, as by crushing, its over-all cross sectional area and shape is enlarged by the crushing action of the dies which spreads the can laterally, so that instead of fitting loosely in the tube l8, the damaged can 30 fits comparatively tightly therein as shown in Figs. 2 and 6. Consequently,

very little if any, of the blast from the die l can pass the damaged can to act upon the gate 25. The can therefore almost completely obstructs the blast and receives the full force thereof so that said gate remains substantially closed during the greater part of the movement of the damaged can in the tube. The blast is powerful enough to move the can rapidly through the tube and to cause the can to strike the gate rather violently. The impact of the damaged can upon the gate opens the gate substantially completely as shown by the dash-dot lines of Fig. 2. The damaged can is ejected past the gate, bypassing the chute entrance in the chamber 2|. Processing of the damaged can in the remainder of the machine is thereby avoided. The orce required to open the gate enough to permit the ejection of a damaged can may be controlled by weighting the gate more or less as needed by means of suitable weights as 62. .A normal can,

after being backed by the gate into the chamber,

described, it is intended that said embodiment be illustrative rather than limitative, because of possible variations within the spirit of the invention.

I claim:

1. In a machine of the character described, a reciprocating member having an air passage therethrough, a substantially L-shaped tube below the member and having a portion thereof arranged coaxially of the member to receive a blast of air emerging from said passage, said air blast being partly obstructed by a normal article of work deposited in the tube and being substantially wholly obstructed by a damaged article of work inserted into the tube and damaged so as to increase the area of the projection thereof on a plane perpendicular to the axis of the article, a chamber at the lower end of the tube and communicating therewith, a hinged gate normally closing that side of the chamber opposite the tube, a downwardly inclined chute leading from the chamber and having the upper end thereof interposed between the tube and the gate, and weights on the gate to cause the gate normally to open insufiiciently under the pressure of the partly obstructed blast in the tube to permit the passage past the gate of a normal article of work, said gate opening widely against the action of said weights under the force exerted by the impact thereon of a damaged article of work advanced along the tube by the blast.

2. In a machine of the character described, a

tube having a horizontal portion at one end thereof, means for delivering cans and a blast of air into the other end of the tube, a chamber closed at the top and on one side and communicating at one end with said one end of the tube, a gate pivoted along the upper edge thereof at the other end of the chamber, and an inclined fixed chute leading from the chamber, the upper end of the chute forming the fixed bottom of the chamber.

3. The machine of claim 2 wherein the can and blast delivering means comprises a member having an air passage therethrough and reciprocating into and out of said one end of the tube.

4. The machine of claim 2, the chute extending substantially perpendicularly to the horizontal portion of the tube.

5. In a machine of the character described, means for advancing a can including a blast-directing element and a can-guidin tube receiving the blast from said element and terminating in a chamber having open ends and an open side, one open end of the chamber receiving the adjacent end of the tube, a gate pivotally suspended from its upper edge at the other open end of the chamber, said gate being weighted and being thereby biased normally to close said other open end of the chamber, and a downwardly inclined chute between the open ends of the chamber at said open side and forming the bottom of the chamber and supporting the can on movement of the can out of the tube, the gate opening insufficiently under the force of the blast passing a normal can in the tube to permit the passage of such can therepast, said gate opening sufficiently to permit the passage therepast of a can so damaged as to increase the area of the projection thereof on a plane perpendicular to the main can axis, under the impact on said gate of the damaged can when the blast is obstructed by said damaged can and said damaged can is forcibly ejected from the tube, whereby a normal can enters the chute and a damaged can passes the chute and is ejected past the gate.

6. In a machine of the character described, a reciprocating can-carrying member having an air passage therethrough, pneumatically operated means for advancing and by-passing damaged cans and for loading normal cans into the machine, said means comprising a can-guide tube adapted to receive a blast of air thereinto from the passage, said member bein of lesser diameter than the tube to deposit a normal can loosely in the tube and to deposit a damaged can enlarged materially in the projected cross-sectional area thereof relatively tightly in the tube, a gate hinged at its upper edge and spaced outwardly away from the end of the tube and in the path of a can moving out of the tube, and a downwardly inclined chute having the upper end thereof constituting a fixed can support arranged between and bridging the gap between the gate and the adjacent end of the tube and in position to receive and to direct a normal can striking and stopped by the gate, said gate being weighted to regulate the force required to open the gate to a predetermined extent under the influence of the air blast and the impact of the tube, whereby a can of substantially the diameter of the tube is impelled by the blast with suflicient force to open the gate and to discharge such can past the upper end of the chute.

7. In a machine of the character described, an L-shaped can-forwarding tube, means including a reciprocating can-carrying member having an air passage therethrough and of lesser diameter than the tube for delivering a can and a blast of air to one end of the tube, a downwardly inclined chute leading from the other end of the tube in a direction substantially perpendicular to the tube and having a fixed end beyond the tube and supporting a can discharged from the tube, and a gate hinged at its upper edge and Weighted and arranged past the chute and in the path of a can moving out of the tube.

8. In a machine of the character described, pneumatic means for delivering a normal can to a predetermined point and for moving a damaged can past said point, said means including a tube receiving a normal can loosely and a damaged can tightly, means for directing a blast into the tube to exert a lesser pressure on a normal can than on a can so damaged as to increase the area of the projection thereof on a plane perpendicular to the main can axis, a gate suspended from its upper edge and weighted and responsive to the greater pressure on and operable by a damaged can, the damaged can moving out of the tube and against the gate to open the gate under the influence of the blast and moving past the gate under the same influence, and a chute having one end thereof fixedly arranged at said point to receive and to direct the normal can.

MARK JECUSCO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS