US1761794A - Carton-blank separating and feeding mechanism - Google Patents

Description

June 3, 1 930. JURGENS ET AL 1,761,794

CARTON BLANK SEPARATING AND FEEDING MECHANISM Filed June 8, 1928 4 Sheets-Sheet l YIIIIIII/II/I u I June 3, 1930. E. G. JURGENS H ,7

- CARTON BLANK SEPARATING AND FEEDING MECHANISM I Filed June 8, 1928 4 Sheets-Sheet 2 June 3, 1930. v JURGENS ET AL 1,761,794

- CARTON BLANK SEPARAUNG AND FEEDING MECHANISM Filed June 8. 1928 4 Sheets-Sh e'et 3 June 3, 1930 JURG'ENS ET AL CARTON BLANK SEPARATING 4ND FEEDING MECHANISM Filed June 8, 1928 4 Sheets-Sheet 4 as tohold the pawl 19 out of engagement with the ratchet 20 for more .or less of the stroke of the pavvl. The purpose of this adj ustfment.

is to cause the magazine ofcarton blanksto feed upwardly at a rate correspond ng with the thickness of the blanks. In order to make the adjustment of'the curvedplate" 24 auto- 3 finger 31 carried by anarm 32 fa st to shaft30 the top of a stack of carton blanks as shown 25 ,in Fig. 2. Shaft 'is rocked in this manner matic' to suit the thickness of the carton blanks; the plate 24 is carried by an arm 25. .journaled upon shaft18 and rigid with a pulley 26. A cord 27 passes over the pulley 26, Fig; 7. One endof' the cord 27 isattaohed to a spring 28 anchored. to the machine frame. The opposite end'of the cord 27 isattach'e'd to an arm 29-fast to an oscillating shaft 30.

The shaft 30 is oscillated once for each a carton blankis separatedfrom the remainder'of the 'stackbyi means hereinafter described. The extentof oscillation' of shaft 30 andaccordingly" the eXtentof adjustment of thecurved plate' 24is determined by a andarranged to come into engagement with means of a spring 33 (Fig. The finger 31 is normally held out of engagement with the stackof cartons by .an'arm 34 fast to shaft '35. The arm 34 engages the shankof a bolt 36 extending laterally from arm which'carriesfthe finger 31. a When the arm 34 rocks to the right (Fig.7) 5 the arm 32 follows under the action ofspring 33; Spring 28 accordingly draws onthe cord 27 which bell crank lever 42 to rock in such 'dire ction as to cause friction member 41to bear down wardlyyupon the top of the stack of carton blanks which areindicated at 44 (Fig. 1). The action of the friction device 41'; on the j.

uppermost blank of the stack of blanks" is to cause it to buckle away from the remainder of the stack asindicated in' Fig. 2. .The separated blank is atthis timeprevented from sliding. off of the'stack of blanks by retaining fingers 45 wllichare rigidly secured to shaft H After; a blank has been buckledas indicated in Fig. 2, the fingers 45 arerocked away Y from the edge ofthe'blank andpermfitthe blank to spring back into flattened condition with its edge incooperative relation with the roller 46 and feed belts 47.1, The retaining fingers 45 are rocked in this manner by means,

of a cam 48 fast todrive shaft 4 and cooperat-. ing Wltlla rolleron the end of an arm 9 fast to shaft 6. The retaining fingers49 are nor- 3 disc 40 fast to? many held in position. shown in Fig. 21 by spring49 (Fig.3).

It is customary in inachinesfof this class to 5 place a portion. of lining paperupon' each blankafter it is separated from the stack and 7g i 5' Q conveyed out of the machine to' the folding jm'e'chanism.' 'For this purpose the present machine is provided with a support 50ff0r a roll of'lining paper-'51. 'The'lin-ing paperi s i lead over idlingjrollers '52 and Zfrom there i it passes between a feed roller 53 and-a pair'of V frictionally driven pressure' rollers 54. The

roller 53 "is on a constantly driven shaft 55', but'ithe paper is'not continuously fed because rollers 54'are arranged to move into. and out s0 of feeding relation with the roller 53. The p period oftime in whichcontact is madefbe tween rollers 54 and 53. determines the length "of the strip which is fed for eachop'eratiom of the blank separating mechanism. "The-s5 Yin-fillers. 54 f fre k tc' g ment-Q i h f roller 5311M l v 5 iv d, a sha 51 i and arranged to cooperate' with a pair ofcaiiis 1 y 58, one of which is loose the otherfast'on I shaft 53. "For'this, pu'rpo'sethe lever 56f car-1 riesa ro1ler59 for cooperating with'the cams 58. length of the; crest 60. of the "cams l if T58 may be increased by changing therelative angular positions ofthe cams as provided for V by set screw 61 (Figs. land 9.) The set screw 61 passesthrough a'slot .6.2-i n oneofthecam's so that it may clamp the'two together. y

the lining paper passes, andis'; operated by a cam 65; faSt tO driveshaftfiQlThe:fcam 65. operates on'a roller 66 car i abya mez fast to shaft .63 to which is also seeuredithe arms; 1 i a 69 carrying' the'knife 63.. "Afterbeing-oper .105;

"spring 70.

"VVhen a atcd b 1 11.65 the knifef restoredby a carton blank is separated'fron a fstaclgof blan ksas shown in Fig 2, edges or; e; s pa tedib an wh fcllgm g engag I edges on the 1 next lowerjblank. are guided 7 clear 'of' thelower blank bylguidej fingers 71 The support for the cartonblanks may be]. adjusted upwardly or downwardlyindepend- 11.5 ent ofgthe ratchet drive-therefor,illustratedin Figs. 10 and llbyjneal wheel 72 which issejcured togshaft lil,

ously' rotated and thro'ugh] gear connections drives the rotating shafts"2,'3,4.and 5, land 3); Shaft 2, by pitman connection 38' oscillates the latter shaft and jthroughiit. eflects the reciprocating action o'f-thet'ojotlied r i n? a t n" pa atingld vi 4 Thi device has a feed'motion towardfthelretain' 7 ng fiegers4 ig- 2) when the maxim in:

the .positionshown'in this figure? The up- 3" and'has threaded.engagementwith'theother,

U AkniteGS for' shearingjthe nai g apa, f cooperates withjaifixed bladej64' o ver-wl1ich 0 sfof'ithe hand I n'the'operatiojn of the'mechanism' iscl'lbediithe ma liidriveshaf continu 0 .permost carton blank is thereby buckled as shown in Fig. 2 and at the end of a stroke of theseparating element 41 the fingers 45 are rocked upwardly bygthe action of cam 48. The buckled portion of the carton then straightens out, its edge engaging roller 46 at the point of contact with the belts 47. The

' separated carton is carried along by belts 47 and as it leaves the machine receives the portion ioflining paper severed by the knife 63. The carton blank support 9 is moved upwardly by the worm gearing and pawl and ratchet feed mechanism shown in Figs. 10

and 11 as controlled by the finger 31 (Fig. 2)

"Wienin its'extreme forward position. This finger moves forwardly under the actlon oi spring (Fig. '5') according to the thickness ofthe removed carton blank. Through the cord connection'27- with pulley 26 (Fig.

'7) the shield 24 is adjusted to regulate the effective, stroke of pawl '19.

Although'but one specific embodiment of this invention has been herein. shown and described, it will be understood that numerous details of the construction shown may be altered or'omittedwithout departing from the spiritof this invention as defined by the following claim.

We claim: In a carton blank separating and feeding mechanism, .a supporting, frame, a support for a stack of carton blanks, a friction device and a retainer for respectively engaging the surface and the edge of the uppermost blank,

; 7 means for movingsaid friction device toward said retainer whereby the engaged blank is moved relative to the next lower blank and separated from the stack by buckling, and

guide fingers on'said frame located in registering cutout portlons of said blanks tor guiding the edges of the cutout portions'oi the engaged blank clear of the edges ofthe cutout portions of the next lower blank.

Signed at Chicago this 6th day of June,

EMIL G. JURGENS. HAZEN K. BECKER.

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