US2332644A - Box staying machine - Google Patents

Description

Get. 26, 1943. M JUNK|N 2 332,644

BOX STAYING MACHINE Filed Dec. 6, 1941' O o 0 O O O O O O O 43 4 Patented Oct. 26, 1943 BOXTAYING MACHINE" H Malcolm P. JunkimgDrexel Hill, Pal, assignor T Louis Wolf, Elias Wolf, Howard A. Wolf, and Walter L. Wolf, copartners, doing business as National Metal phia, P a.

Al l lication December 6,

Y n i 5 Claims.

This invention-relates to ,an improvement in box staying, machine and more; particularlytoa Edge Box Company, Philadeb.

1941, Serial No. 421,913

machine of the type indicated which will efficiently and economically ing strip to boxes. l

As is well known, an efficient type of box is proprepare and apply stay-.

ducedfrom a blank formed from cardboard, the

corners of the box being-secured and reinforced by means of metal staying strips. The metal strips overlie the corners of the box and aresecured to the box walls adjacent to the corners.

,Heretofore it hasbeen customary to prepare the metal staying strip fromha ribbon of metal by punching to form securing spudsand winding into a roll. Then, to apply the prepared strip, in the production of boxes, a mechanism include 1 ing an anvil and die is used.

The procedures and, mechanisms heretofore, used in preparing and applying metal, staying strip are relatively expensive and time consuming and present various problems to the manufacturer of the so-called metal stayed-boxes. q

Now in accordance with this invention-there is provided a mechanism for the preparation and applicationof metal staying strip, which is-at once relatively inexpensive to produce, maintain and operate and, at the same time, of high efiie.

ciency in operation.

Having nowindicated in ture and purpose of this invention, I will proceed to a detailed description of an embodiment thereof with reference to the accompanying drawing in which: 2 V V V Figure 1 is a side view, partly broken away and.

partly in section, of a staying machine according to this invention. V I

Figure 2 is a plan view of a length of staying strip partly prepared for application.

a general waythe na- I Figure 3 is a perspective View of an element of the strip feeding mechanism included inthe machine showninl igurel.

Figure 4 is a sectional view of an element of the apparatus showing a detail of construction.

Figure 5 is a, fragmentary view showing a corner of the box with staying stripsuch as indicated inFigu're 2 applied.

In the several figures i indicates a frame for the support of the various elements of themachine. At one end of the frame i is formed a support 2, on which is mounted a die 3, provided with achannel for the passage and guidance of ametal ribbon 4 extending from a roll 5,.carried by a bracket 6, extending from the, frame I.;-.Adja-. cent to the-die} and serving, tosupportg the .rib-

bon 4 and guide it into the channel in the die3 is aroller 1 carried by a bracket 8. Above the die 3 is a punch. head 9. carrying a series of punches [0, adapted to cooperate'with theidie 3 to form the openings H in the strip 4, with the production of triangular spuds l2, and to scallop the edges of the stripas shown at I3, Figure 2.

The punch head 9 and punches in are guided by means of guides I4 to the end that the punches in operation will register with the openings in the die 3.

Mounted on theframeopposite to the die "3 and at a somewhat lower level is an anvil It with which a hammer l6, mounted forreciprocation 'iin guides I1, is adapted tocooperate for the application of a staying strip to a box. The working face of the hammer I6 in its upper position is in line with channel in the die 3. Leading to the hammer l6, and carried thereby is a guide I8, which extends toward the die 3 and is adapted to receive and guide tothe hammer the strip 4, after its passage through the die 3 and the formation of the openings l 1 land spuds i2 by the punches l0. 1 I v The punch head 9 with punches. l 6 and the die I6 are adaptedto be reciprocated by power from a motor I!) transmitted through gearing, 20 to a shaft 2|, on which is secured acrank 22 connect--- edto a rod 23. The rod 23 is connected, by a slot and pin connectionv 3!, to an end of. a lever 24, mounted between its ends on a pivot 25 inthe frame I. The pivot 25 serves as a fulcrum;

As will now he -obvious, the lever 26 will be I rocked when the motor I9 is operated.

The punch head 9 is reciprocated by the lever 24 through a lever 26, mounted on the frame I on a pivot 21 between its ends. The lever His 1 connected at one end to an end. of lever ,.24,'

, through a slot and pin connection 32, and at its other end to the punch head 9 through a link 28. The form of lever 26 and length of link 28 are such'that on the worlcing'stroke of the punch head the link 28 is straightened out, as ina tog- 1 gle,to give maximum pressure on the punches to.

The hammer is is reciprocated by the lever 24 through a 1everi29 mounted on the frame I on a pivot 30 at its end, and connected to an end of lever 24 through the slot and pin connection 3i. The die I6 is connected to the lever 29 intermediate its ends by a link 53. i The lever 29 and link 53 are so arranged that-in the working stroke of the die I6 the-link 53 will straighten out, as in a toggle, to give maximum pressure on the die.

It will now be clearthat operation of the motor "19 effects a rocking of lever 24, whichlin turn effects reciprocation of the punch head 9 and the hammer l6; and that, by virtue of the classes of levers used and their connections to the punch head and die, these elements will be operated to punch the strip 4 and apply it to a box on anvil IS n synchronism.

The strip 4, led from the rolls 5 over the roller 1, through the channel in the die 3 and. through the guide It to the die [6, is fed to th die for application to a box by means of a feed pawl 33,

pivotally mounted on an arm 34, mounted on a' shaft 31. The pawl 33 is provided with a pair of fingers 35 adapted to engage opposite, holes H in the strip formed by the punches 'ltl, underjthe influence of a spring 36.

For feeding a strip the feed pawl 33 is recip-' rocated through the medium of an arm 38 conthe anvil I5. "fed more or less of the punches merely pass through previously punched holes in the strip. -F gur e'5 illustrates the stay produced by the mechanism above described applied to the corner 1 of'a box. -In Figure 5, 40 indicates the body of the box ancl'f44 indicates stay about the corner nected to crank 22, an adjustable rod 39 connected to arm 38 and a crank 40 mounted on shaft 3 7, 20

the cranks 22 and 40 being arranged oppositely.

A holding pawl 4| of thezform of the feed pawl 33 is 'pivotally .mounted in the guide Hi and backed by a spring 42, :is adapted'to engage in oppositeholes 'l l in the strip 4..-

As willnow be obvious, when the shaft 2! is -ro tated by motor IS, the feed paw1'33 will here 1 ciprocated, its driving connection being such that it will move backward idly, when'the punch head 9 and hammer I 6 are moved downwardly on their working strokes, and'forward with feed of st'rip l when the punch head 9 and hammervlii" move upward 'on the idlestrokes. When the feedpawl 33 moves backward, the holding pawl 4I will hold the strip 4, but will not obstruct feeding of f the strip when the feed pawl advances the strip For adjustment of the feed of the strip 4, a

rider strip 43 is placed on the topof the'gdida and is adjustable to and away from th'efe'edpawl 33. With a given adjustment 'of the rider strip the feed pawl rides up on 'itin its backward movement and in its forward movement engages the strip and feeds it to the 'hammer. i 6. The

length of strip 4 fed' to the hammer H6 'is 'gov erned by the position of the rider strip 43.

In view of theabovedescripti'on with various 7 description of'ithe operations of the pa'rts of the mechanism described, it isbeli'eve'd' thatfpro cedure involving use of the mechanism for :the" stayingof boxes'will be clear." Howevenassuming that a reel of. metal ribbonis supported from the bracket 6, the ribbon is led over'the rollerl,

through the channel in the diet. and into the guide I8, and drawn out'ofthe throat'adjacent the hammer I6. I c I The mechanism is then put into-operationby starting the motor l9, which, as' has been described, eiTects operation of-the punch head: and supported punches l0 and of the hammer 1-6. When the punches are operated,"theypunch the holes I l in' the strip 4, with the "formation o'f' the spuds l2 and scalloping of theedgesof 'the' strip. When the machine is put in operation,*'

the stripis fed along by hand until holes ll have been punched in the strip for'a'sufiicient length to enable the feed to be taken up ibyith feed pawl 33. When the 'feedis takenup bythefeed pawl 33, it will operate .as .described-toiadvance to the die the desiredlength of punched strip. As will be understood,"theffeed pawl operates to feed strip to the hammer [6 when the .liammer -IG is'in motion away from the 'anvil'l'5 andv the punch head 9 is in motion awayfromthezharhmer 16. The feed pawl will be idle when punches l0 and hammer iii are operative. "Theholding pawl 4| acts, as;has been indicated,;to,= hold 'the,

bination, a frame; a die and'a'n'anvirmounted onintermittently"feedinga continuous stripover t of the box, the spuds [2 (see Figure 4) being "engaged in the body of the box.

While in the above description of thisappli cation reference has been made to metal'strip- I ping, :it will be understood-that the mechanism in I accordancevi'rith thisinvention inayi be -used'fob the preparation and application of =staying s of'otherma'teria'l suitable'for the purpose} It is not contemplatedthat thisdnvention"shall be limited by the above -detailed;description of the embodiment thereof, sincevarioiis'mo'diflc'aj tions in detail maybe made without" departing? from-"the scope of the claims appendedhe'ret'o.

WhatI claim and'desireto protect'iby 'lietters Patent 'isz a .1. A box staying machine comprising, i combination, a frame, "a die and -=ari*;anvil" mounted on the frame, a series-of punchesY-f mounted on a head and 'adapted tof cooperate with the die, a'ham'r'ner adapted to"c'o'oper ate wit the anvil, means for intermittently feeding fa continuous strip over the die-anaanvnahd driv ing means inc'ludinga' leverfulcrumed betwee .its endsand means fo'r operabIy corinectings lever to said head and tofsaid hammer resp tively' for efiecting reciprocation orsaidser f of: Y

punches and-said hammer in'synchron'ism 2. A box staying machine comprising, in com-' the frame, a 'series of punches {mounted on head and adapted tocooperate with the hammer adapted to cooperate'-with-'the anv1l;"

means for intermittently feeding'a strip overthe die and'anvil and driving mean [j including a lever fulcrum'ed between "its ends *and 1 meansconnected to said-lever on opposite sides off said fulcrum for connecting said lever to sald" head and said hammer respectively 'for effe reciprocation of 'saidseries of punches-and hammer in synchronism, saidseries of p maximum intermittent feedth ereof. I V Z 3. A box staying machine comprisingfin com extending over a length of strip equal. v

bination, a frame, a die and-'an ja'nvil'mountedion theframe, a series of punchesmounted'on ahead and adapted to cooperate with the die; ahan m'er;

adapted to cooperate with the {anvilfmeans for die and anvil and driving' mean's for eirecting fr ciprocation of saidseries of punches'-'ani? said"i hammer in synchronism, comprising' a' leve r crumed between its ends, 'afpair 0f *levers if crumed on the frame and respectively connected".

to. opposite ends of-said first mentioned-leverfand links connectingthe levers of -sz'i'id pair tdsaid head and tosaid hammer'respectivelywhereby 5 saidheadand the punches inounted thereon w 7 beactuated insynchro'nism. 3 l 4; -A box- =staying machine-compris'in gm ee' bination, a frame, a die and an anvil mounted on the frame, a series of punches mounted on a head and adapted to cooperate with the die, a hammer adapted to cooperate with the anvil, means for intermittently feeding a continuous strip over the die and anvil, driving means for effecting reciprocation of said series of punches and said hammer in synchronism, comprising a lever fulcrumeol between its ends, a pair of levers fulcrumed on the frame and respectively connected to opposite ends of said first mentioned lever through slot and pin connections, and links con-- meeting the levers of said pair respectively to said head and to said hammer whereby said head and the punches mounted thereon will be actuated in synchronism.

5. A box staying machine comprising, in combination, a frame, a die and an anvil mounted on the frame, a series of punches mounted on a head and adapted to cooperate with the die, a hammer adapted to cooperate with the anvil,

means for intermittently feeding a continuous strip over the die and anvil, driving means for effecting reciprocation of said series of punches and said hammer in synchronism, comprising a lever fulcrumed between its ends and a pair of levers and respectively connected to opposite ends of said first mentioned lever through slot and pin connections, one of the levers of said pair being fulcrumed at one end on the frame and the other being fulcrumed between its ends on the frame, and links connecting the levers of said pair respectively to said head and to said hammer whereby said head and the punches mounted thereon will be actuated in synchronism.

MALCOLM P. J UNKIN

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