US2942765A - Carton blank feeding mechanism - Google Patents

Description

June 28, 1960 J. R. BAUMGARTNER 2,942,765

CARTON BLANK FEEDING MECHANISM 2 Sheets-Sheet 1 Filed May 24, 1956 J TEQ J1me 1960 J, R. BAUMGARTNER 2,942,765

CARTON BLANK FEEDING MECHANISM Filed May 24, 1956 2 Sheets-Sheet 2 a ar w.

CARTON BLANK FEEDING NIECHANISM John R. Baumgartner, Milwaukee, Wis., assignor to Mercury Engineering Corporation, Milwaukee, Wis., a corporation of Wisconsin Filed May 24, 1956, Ser. No. 586,984

6 Claims. (Cl. 225--94) The invention relates to carton or box blank forming apparatus and more particularly to feed mechanism for separating multiple blanks from each other and delivering them to a delivery conveyor.

One object of the invention is to provide an additional set or sets of feed rollers between the last set of feed rolls and the delivery conveyor shown in my prior U.S. Letters Patent No. 2,655,842, dated October 20, 1953, for blank forming apparatus, this additional set or sets of feed rolls being used to cause a lateral separation of multiple cut blanks before such blanks are deposited on the delivery conveyor.

A further object of the invention is to provide a set or sets of feed rolls having a single lower drive roll and a series of smaller individual blank engaging rollers that may be adjusted at varying angles relative to said lower drive roll so as to exert a lateral thrust on a pair of blanks to separate them laterally into individual blanks before their delivery to the delivery conveyor. Each of the individual rollers are preferably rubber tired or faced rollers that are mounted on their support for angular adjustment and also adjustable spacing relative to each other, and this mounting is so constructed and arranged as hereinafter described to permit the individual adjustment of each roller to compensate for the wear of individual rollers.

The invention further consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a diagrammatic view of a blank forming apparatus embodying the invention;

Fig. 2 is a side elevation view of the feed roll section having features forming a part of the invention;

Fig. 3 is an enlarged sectional view of the feed mechanism embodying the invention, parts being broken away and parts being shown in section;

Fig. 4 is a plan view of structure shown in Fig. 3, parts being broken away;

Fig. 5 is a plan view of a pair of blanks before and after their separation of a set of feed rolls embodying the invention.

Referring to Fig. l, the web W is fed from a supply roll (not shown) to a set of continuously rotating feed rolls 7, 8, and 9 and then to a pair of continuously driven intermittently active feed rolls 10 and 11 which rotate at a faster speed than that of the rolls 7, 8, and 9 and carry the web into the blanking press which includes a fixed platen 12 and a movable platen 13, one of said platens carrying the blanking and forming dies and the other the counterplate therefor. For illustrative purposes only the roll 10 is shown mounted on a swinging support 14 having a crank arm 15 whose movement is controlled, for example, by mechanism shown in my prior U.S. Patent No. 2,638,821. Support 14 carries the movable member 16 of a brake 17 whereby on the swinging of said support to a position where the rolls 10 and 11 are operative to feed the web to the press, the brake is re- Patented June 28, .1960- leased as shown in Fig. 1, and on the swinging of said support to a position separating the rolls 10 and 11, the brake will be applied as the blanking press is operated to cut the web.

After the blanks are cut by the press, the cut blanks, here multiple blanks, are fed out of the press into a stripper mechanism S which acts to separate the cut blanks B.

from the web as indicated in Fig. l and the left hand view of Fig. 5 and deliver them to a set of feed rolls 18 and 19 and then over a short table 20 to a set of feed rolls 21 and 22. A further detailed showing and description of the parts above described will be found in my U.S. patents above identified, though other forms or types of stripping mechanism may be used without departing from the present invention. As shown, as the waste W is carried with the blanks past the feed rolls 18 and 19 and is allowed to drop down while the blanks are fed to the rolls 21 and 22.

After leaving the rolls 21 and 22, the multiple blanks B stripped of their waste are still held together by a out line C and are carried over a table 23 into the bight of another set of feed rolls.

This last named set of feed rolls comprises a lower long power driven roll 24 extending transversely of the machine and a series of narrow rollers 25 which cooperate with said roll 24 to tear the blanks B apart along the cut line C and feed them to the upper run of an endless delivery conveyor D which is suitably driven by a belt (not shown) operatively connected with power take off of the machine as shown, for example, in connection with a similar conveyor in my Patent No. 2,655,842 above referred to.

While a single set of the feed rolls above described may be used in some instances, it is desirable in other instances to provide an additional set of feed rolls and an oscillatory diverter 26 between said sets of rolls so that some blanks may be delivered directly to the, delivery conveyor from the first set of rolls, and other blanks may be delivered from the first set of blank separator rolls to the second set of rolls and then to the conveyor.

The second set of feed rolls comprises a long lower power driven roll 27 extending transversely of the machine and a series of narrow rollers 28 which cooperate with the roll 27 to feed the separated blanks B from the first set of rolls and, if desired, to further separate the blanks passing between the roll 27 and rollers 28 from each other before their delivery to the delivery conveyor.

Referring to Fig. 2, the shafts 29 and 30 for the rolls 24 and 27 are each suitably journalled in the frame F of the machine. The shaft 29 carries a pulley 31 and the shaft 30 carries a pulley 32, .these pulleys being connected together by a belt 33 driven by a pulley 34 on the shaft 35 of an electric motor M. The frame carries guides 36 and 37 to guide finished blanks from the second set of rolls onto the delivery conveyor. An auxiliary frame 38 is mounted to swing on a shaft 39 extending transversely of the main frame F. Frame 38 includes side frame members 40 and spaced sets 41 of transverse frame bars 42. The bars 42 of each set of bars are spaced apart to form a transversely extending channel 43.

Each of the'rollers 25 or 28 has a rubber or yieldable tread portion 44 and a metal hub 45 suitably journalled on an axle pin 46 carried by the spaced arms of a fork 47. The shaft 48 has a fixed threaded connection at its lower end 49 with the fork 47 and an adjustable threaded connection at its'upper end with the hub or a hand knob 50 and has a key 51 mounted in it. A sleeve 52 surrounds a portion of the shaft and is provided with a key way 53 slidably engageable with the key 51.

A washer 54 is mounted on the lower end of the sleeve 52 and held thereto by a retainer ring 58. A washer less, angle, if desired.

Va,942,7a

55 is mounted on the sleeve and engaged by a nut 56 in threaded engagement with the upper threaded end of the sleeve. The washer 54 abutsthe lower sides of the set of spaced bars 42 and the washer 55 the top side of these 1 bars, and washers are clamped against these surfm' by the turning down of the nut '56, and sincethe V sleeve 523's free to slide-"in the channel =43, it and consequently the roller or 28 may be clamped in any desiredposition along the length of the channel.- At the p same time the sleeve may be angularly adjusted or skewed with the aid of the wrench engaging portion 57, while it iis'being clamped down, to set the-roller 25m 281, at anangle-t'o a straight @line movement of a blank as indicated in .-Fig. 4. :A stiff spring 59, surrounding the lowere nd-ofthe shaft 48, is interposed between the lower end of the sleeve '52 and the fork 47. The loading 'of this 'springtis such "that ,it'causes the roller assem I bly.to move with the fra'me 38 as a unit, yet on the turning of thehand knob 50 it permits downward movement of thefshaft 48 relative to'the sleeve 52 and the frame 38 to Tcompensate for the tread wear of the roller hold'the rollers 25 and 28 innipping engagement with their associatedroller 24 or 27. Therollers 25 and 28 may be raised out of such engagement by raising the frame 38 by means of an oscillatory eccentric 60 on :a transversely extending shaft 61. i

tTransverse adjustmentof the rollers on the frame permits each roller to beset to engage a single blank, and the angular or skewing adjustment of the rollers acts to separate the blanks-B from each other along the crease line C as said blanks travelbetween said rollers and .the lower roller, this skewing in the case of a pair of blanks being in, opposite directions as shown in Fig.

4 so that one of the blanks is pulled toward one side of the machine and the other pulled toward the other side. The rollers .28 may vbesirnilarly skewed but at a The sepaanted :finished blanks are delivered by the sets ofrolls 25, 24 and 27, 28 to the delivery conveyor -D.

For holding the delivered blanks down on the conveyor weights in the form of metal rollers ;62 mounted on frames 63 Lpivoted on uprights 64 whichare lengthwise adjustable through pinions 65 and a rack 66 similar to theroller uni-t shown in detail in Patent No, 2,655,842

may be used. 7

.I desire it to be understood that this invention is'not to be limited to any particular form or arrangement of parts except in so far as such limitations areincluded infthe claims.

What I claim as my invention is:

1. In a carton blank forming apparatus for handling multiple blanks cut from a section of a web of stock, the combination with feed means for advancing blanks in multiple and a delivery mechanism for the finished blanks, of a lower power driven roller, and a series of upper relatively'narrow rollers cooperating with said Single roller and driven by the periphery thereof to adv-anc'e the "blanks'lfrom said feed means to said delivery mechanism; a main support, a support for each upper roller, means tfor clarnping-said roller supports to said njainsu po in-adjustably spaced relation to provide an upper roller in contact with each blank of said multiple blanks and means for angularly adjusting said roller supports and hence said'upper rollers relative to'said main support to cause a lateral separation of the blanks as' they move over said single roller, and means for individually adjusting each of said upper roller supports vertically relative to said main support.

a 2. ;a carton blank forming apparatus for handling 75 multiple blanks cut from a section of a web of stock having a delivery mechanism for-the finished blanks,'feed mechanism for feeding finished blanks to said delivery mechanism comprising, in combination, a transversely extending lower power driven roller, a series of upper relatively narrow rollers having a yieldable tread surface, one roller for each blank, cooperating with said lower roller, a support for each roller including a shaft, and a sleeve surrounding said'shaft, a transverse support having a transversely extending slot to receive the sleeve of said rollers, means vfor clamping each sleeve to said transverse support in the desired spaced relation relative to other sleeves, said clamping means engaging opposite sides of said support and pennittirig angular adjustment of said sleeves relative to said slot, and means for adjusting each shaft longitudinally of its sleeve to compensate for the wear of its tread surface.

3. In a carton blank forming apparatus for handling multiple blanks cut from a section of a web of stock having a delivery mechanism for the finished blanks, feed mechanism for feeding finished blanks to said delivery mechanism comprising, in :co'mbinatiom a transversely extending lower power driven roller, upper relatively narrow spacedrollers having a yieldable tread surface, one roller for each blank, cooperating with said lower roller, 21 support for each roller including a shaft and a sleeve surrounding said shaft'and slidably keyed thereto,a.spring normally acting to move said shaft lengthwise of said sleeve, a manually operable member connected to said shaft and engageable with said sleeve to determine the extent of, relative lengthwise movement of said shaft by said spring,-'a -main supportfor said rollers, and means at opposite end portions of each sleeve acting to clamp thecsame to said support both angularly and laterally thereof. p p

4. In a' carton blank forming apparatus for handling multiple blanks cut from 'a section of a web of stock and having a delivery mechanism for finished blanks, a main frame having vfirst andsecond spaced apart lower feed rolls, means to drive said lower rolls, -a blank diverter shiftably mounted on said mainframe between said lower rolls for diverting blanks from said first lower roll alternately to said mechanism and said second lower 'roll, an auxiliary frame shiftably mounted on said main frame and above said lowerfee'cl rolls, 'and two series of upper narrow rollers mounted on said auxiliary frame, each series cooperating with a corresponding lower roll and driven thereby, said auxiliary frame being so mounted that its weight holds said upper rollers in-cont'act with their respective lower roll. 7

5. In a carton blank forming apparatus for handling multiple blanks cut from a section of a web of stock and having a delivery mechanism for finished blanks, a main frame having first and second spaced apart lower feed rolls, means to drive said lower-rolls, a blank diverter shiftably mounted on said main frame between said lower rolls for diverting blanks from said first lower roll alternately to saidmechanis'm and said second lower roll, an auxiliary frame shiftably mounted on said main frame and above said lower feed rolls, two series of upper narrow rollers mounted on said auxiliary frame, each series cooperating with a corresponding lower roll and driven thereby, said auxiliary frame being so mounted'that its weight holds said upper rollers'in contact with their respective lower roll, and "means for angularlyadjusting said upper rollers in respect to the direction of blank travel whereby one series of .upper rollers can be adjusted to a different angle than the other series of rollers.

6. In a carton-blank forming apparatus for handling multiple blanks-cut firom a section of aweb of stock and having'a delivery mechanism for finished blanks, a main frame-having first andfs e'cond spaced apart lower feed rolls-means to "drive said "lower rolls, "a "blank "diverter shiftably mounted on'said "main frame between said lower rolls for divertingblanks from said first lower roll alterhately to said mechanism and said second lower roll, an auxiliary frame shiftably mounted on said main frame and above said lower feed rolls, two series of upper narrow rollers mounted on said auxiliary frame, each series cooperating with a corresponding lower roll, means for resiliently urging said upper rollers against their respective lower roll, means for individually adjusting each of the upper rollers with respect to its lower roll, said auxiliary frame being so mounted that its weight holds said upper rollers in contact with their respective lower roll, 10

and means for angularly adjusting said upper rollers in respect to the direction of blank travel whereby one series of upper rollers can be adjusted to a different angle than the other series of rollers.

References Cited in the file of this patent UNITED STATES PATENTS 2,461,376 Feldmeier Feb. 8, 1949 2,655,842 Baumgartner Oct. 20, 1953 2,682,208 Monroe et a1. June 29, 1954

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