US1803699A - Machine for applying strips to blanks - Google Patents

Description

May 5, 1931. H. J. 6055 MACHINE FOR APPLYING STRIPS TO BLANKS Filed Nov. 15, 1929 3 Sheets-Sheet l Jzzve zzfo .Ha 1'0 in! J GOJJ May 5, 1931. H. J. GOSS MACHINE FOR APPLYING STRIPS TO BLANKS is, 1929 s Sheets-Sheet 2 Filed Nov.

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MACHINE FOR APPLYING STRIPS T0 BLANKS Filed Nov. 15. 1929 KSheets-Sheet 3,

E i a i i z i i b 5 11w i l f f Jazuentozt l .Hafloid J 6am: I I E a I v Patented Ma 5, 1931 UNITED STATES PATENT OFFICE HAROLD J. GOSS, OI NASHUA, NEW HAMPSHIRE, ASSIGNOR TO THE INTERNATIONAL PAPER. BOX MACHINE COMPANY, OF NASHUA, NEW HAMPSHIRE, A CORPORATION 01 MAINE MACHINE FOR APPLYING STRIPS TO BLANKS Application filed November 15, 1929. Serial No. 407,470.

This invention relates to the production of adhesively united blanks and strips, and has particular reference to the preparation of blanks for paper boxes with strips of thin material secured to predetermined areas thereof. p

In the manufacture of paper bo'xes,it is frequently desirable that certain ortions thereof shall have strips of paper ad esively secured thereto and, in the interestof econom} in the cost of production of the boxes, it is preferablethat the strips shall be applied to the blanks before such blanks are converted to box form either as set-up boxes or flat folded boxes, or for making articles other than boxes. And it is important that the strips shall be accurately located when aflixed to the blanks, not only as to lateral position thereon but also as to longitudinal position, with no end portions of the strips projecting .beyond the edges of the blanks unless for some boxes such projection of the strips is desired. 7 n

The object of the present'invention is to provide a machine capable of rapidly effecting the production of articles such as box blanks each having one-or more strips of paper or other desired material adhesively connected to one or more predetermined areas thereof for such purposes as, for instance, is explained in Letters Patent No. 1,634,073 issued June 28, 1927, to E. W. Labombarde.

With the above stated object in view, the

invention consists in the construction and combination of parts substantially as-hereinafter described and claimed.

Of the accompanying drawings which illustrate so much of one embodiment of the invention as is necessary for an understanding of the same:

Figure 1 is. a side elevation, partly in secthat portion of the complete machine embodying the present invention. 7

Figure 2 is a plan view of the same but omitting some details.

Figure 3 represents a detail section on line 3-3 of Figure 2.

Figures 4, 5 and 6 are detail views, on a smaller scale than Figure 1 illustrating successive steps or points of the rogress of a blank through the machine and the application of a strip thereto;

Figure 7 is a plan view of one type of blank having strips secured thereto by mechanism such as illustrated in the other views.

Similar reference characters indicate similar parts or features in all of the. views.

Portions of the frame of the machine are illustrated at 12. One of the side members of the frame is omitted from F i ure 2. In the complete machine, as will e readily understood without an illustration thereof, the omitted side member is a duplicate of the illustrated member. The parts illustrated are suflicient to apply a single strip to a blank, and the machine may be so employed. But when two strips a (see Figure 7) are to be applied to a blank I), the machine includes two of the mechanisms illustrated by Figures 1, 2 and 3, such two mechanisms being duplicates and side by side... For present puroses it is unnecessary to illustrate both.

f course in such machine the two side members of the frame are connected by suitable tie rods one of which is illustrated at 13.

By suitable feeding mechanism such as is well-known in box-making machinery, blanks are delivered in timed spaced relationship, by carrying chains 14 having pushing lugs 15, to the mechanism included in the present invention. The delivery end of each chain is mounted. on a sprocket 16 carried by shaft 17. For the reason hereinbefore explained, Figure 2 illustrates but one of the usual pair of chains. a

A glue-box 18 (Figs. 2 and 3) is supported by a carriage mounted at one end on a slotted cross bar 19 to provide for lateral adjustment. Rotating in the glue box is a roll 20, the coating of glue thereon being controlled by a customary doctor roll 21-. Such coating istransferred by a roll 22 to the member whichapplies glue to a blank fed along below it, said member comprising'a disk 23 having a raised peripheral ortion hereinafter referred to as the gluing arc 24. The short I shafts of said disk and rolls are supported bv the carriage 25 which also supports the g ue box.

Below the disk 23 is a roll 26 carried by shaft 27 having a sprocket connected by a chain 28 with the shaft 17. Another sprocket of the shaft 27 is engaged by a drive chain 29. The gearing connecting the shafts of the gluing mechanism is illustrated asa group at 30.

The strip a, .usually of paper, is supplied from a roll enclosed in a reel 31 supported by a fixed upright 32 the lower end of which is secured at 33 to a casting 34 which is mounted on the cross bars 35 and laterally adjustable thereon. Said casting is provided with a pair of strip-guiding rolls 36, 37, one above the other, and with another pair of rolls 38, 39, side by side. And rising from the casting is an upright 40. A roll 41 supported by said uprilglht may be set at a greater or lesser heig t by means of the slot in the upright.

Pivoted at 42 to the casting 34 is a rocker arm 43 having a roll 44 which is acted upon by a cam 45 carried by a shaft 46. A spring 47 tends to keep the rocker raised. A rubber block 51 secured to the under side of the rocker arm coacts with one of the bars 35 to grip the strip a as presently described.

The end of the rocker carriesa strip weakener 52 preferably a toothed blade. When the rocker is depressed, the member 52 so acts on the strip a, as by forming a line of perforations across it, that the strip can be severed at that point by a pulling action effected by mechanlsm yet to be described. The elastic block 51 at the same time so grips the strip against the bar 35 that the described action of the weakener 52 will not draw the strip along. Y

Extending through the casting 34 is a rock shaft 53 having an arm 54 projecting from it over the path of the strip a, and carrying a yieldable presser 55 which coacts as hereinafter described with a plate 56 that is supported by the casting 34. The rock shaft 53 (Figs. 2 and 3) has another arm 57 provided with a roll 58 that is acted upon by a cam 59 carried by the shaft 17. A spring 60 connects the arm 57 with an arm 61 fixed to the tie rod 13, said spring having such strength as to cause the presser 55 to bear strongly on the strip a and grip it firmly on the late 56 at the stated times hereinafter descri ed.

From the mechanism so far described the stri a, and also intermittently advanced blan 5, pass over a lower roll 62 and under an upper roll 63, said two rolls bein so spaced that there can be no pinching o the strip alone between them. That is, there must be a blank b as well as the strip a between said two rolls in order tocause any feeding or pulling action by said two rolls.

The roll 63 has two recesses in its periphery, one wider than the other, as illustrated respectively at 64, 65, the purposes of which will be explained durin the description of the operation of the mac ine.

The roll 63 is constantly driven through the medium of any suitable gearing not necessary to illustrate, such driving being in proper timed relationship to accord with the timing of action of the pushing lugs 15.

The blanks and the overlying strip thereon issuing from between the rol s of rolls 66 (Figs. 1, 4, 5 and 6) which, as Well as the rolls 62, 63, in the operation of the machine, have a higher peripheral speed than the speed of travel of the pushers 15.

To prevent the strip a from having any retrograde movement relatively to the plate 56, a spring detent 67 is provided (Fig. 1), said detent bein secured to the casting 34 and having its ree edge bearing on the strip.

When the mechanism is constructed to simultaneously apply a plurality of stripes a to each passing blank (see Figure 7), the mechanism illustrated by Figures 1 and 2 is duplicated, and one or both of such mechanisms is so mounted as to be laterally adjustable to suit the width of the space between the two arallel strips. To enable the mechanism, w ether single or duplicated, toapply strips of greater or lesser lengths to blanks of corresponding len h, theroll 23 is removable and replaceab e so that the machine may have a roll provided with a projecting gluing arc 24 the length of which are will correspond with the length of the section of the 62, 63, have. a pulling action imparted thereto by a pair.

strip a that is to be applied to the blank. For

the same reason the roll 63 is removable and replaceable so that one having properly spaced recesses 64, 65, may be employed. And the roll 41 is adjustable to proper vertical position to suit the length 0 the strip sections to be applied to the blanks.

When the machine is prepared for operation, the stri a is threaded as illustrated by Figure 1, wit its free end extending between the rolls 62, 63, (Fig. 4), and with the guide roll 41 located at such height that the length of the strip from the wea ener 52 to the nip of the rolls 62, 63, equals the length of the surface of the gluing are 24. This is when the machine is to be used to apply stri sec- 'tions to blanks throughout the len'gt s of said sections. If it be desired that the applied strip sections shall have free or unsecured ends, a roll 23 will be employed in the machine which roll will have a gluing arc of less length than the strip sections thatare to be successively applied to blanks. With the last-mentioned arrangement, the stripes of lue that will be applied to the blanks wil be shorter than the strip sections a and therefore the ends of'the latter will not be stuck to the blanks.

When the machine is started, nothing happens until a blank is fed by the pushers 15,

excepting that the weakener 52 and the gri per 55 will be oscillating. The stri a will not be advanced because the space tween the rolls 62, 63', exceeds the thickness of said strip. But when a blank I) is pushed along by the lug 15 or its equivalent, and the front edge thereof arrives between the rolls 62, 63, under the strip (Fig. 5), the combined blank and strip are gripped and drawn along and gass to the nip of the pulling rolls 66 6) ince the, arriving blank just mentioned has had a stripe of glue applied to its upper surface by the gluing are 24, the strip and blank are adhesively united as they. pass along between the rolls.

The timing is such that the presser 55 is raised during the first part of the pulling operation just described, but'is lowered to grip the strip after the last preceding line of cross perforations made by the weakener 52 has passed said presser, thereby holding the strip at the rear of its weakened point so that the section of the strip which is on the blank will be pulled away from the remaining portionof the strip, the weakening of the strip enabling this to be done. And said remaining portion will be stationary until the next blank reaches the postion illustrated by Figure 5 and results in a pullingact-ion being imparted to the strip and blank by the rolls 62, 63.

The timing is also. such that when the breaking away of a strip section has been effected as just described, the end of the now stationary strip will be in the position illus-' trated by Figure 4, just reaching the space between the rolls 62, 63. And when the next blank arrives with its front edge between said rolls, the recess 64 of the roll 63 will an rive abovethe roll 62. The said recess 64 is to enable the front edge of the blank to reach a position slightly beyond the vertical plane of the axes of the two rolls 62, 63, before an; actual pulling nip or gripis effected by the said rolls, thereby providing for registrat1on of the front edge of the blank with the previously located front end of the/strip a. Said strip has been stopped by the action of the gripper with its front end slightly beyolrid the vertical plane of the axes of the two ro s. I

The gripping action referred to occurs at the instant that tile rear edge of the blank is leaving the nip of the rolls ,62, 63, and simultaneously therewith the recess in the roll 63 arrives above the rear edge of the blank and its applied strip section. As the blank and strip section have now reached the rolls 66,

the latter can, and do by their pulling action, separate the applied section of the strip from that portion which is then to remain stationary to await the arrival of another blank. If there were no recess 65, the nip of the rolls 62, 63, would pull the strip too far and possibly cause another parting of it at a wrong point. But the recess 65 effects a releasing of all pulling action by the rolls 62, 63, at the proper moment to let the rolls 66 do the pulla blank and strip are can successively detach sections therefrom,

and that the strip material is drawn along and pressed. on the glue stripes of the successively passing blanks, thereby effecting the rapid production of such articles as illustrated by Figure 7, or any other blanks requiring the adhesive application thereto of accurately located strips.

' Having now described my invention, I claim: I

1. A machine for affixing sections of strip material to blanks, comprising means for causing blanks to travel, means for applying adhesive stripes to the blanks, means for weakening the strip material at spaced inter vals to provide strip sections, means for applying the strip material to the adhesive stripes of the blanks, and means rendered effective by the combined thickness of the blank and strip for parting the strip material successively at its weakened points.

2. A machine for affixing sections of strip material to blanks, comprising means for causingblanks to travel, meansfor applying adhesive stripes to the blanks, means for wcakenin g the strip material at spaced inter: vals to provide strip sections, means for pressing the strip sections successively on the adits blanks to travel and means for successively detaching sections of predetermined length from a strip, means for bringing the strip sections and blanks into superimposed relationship, and means for applying stripes of adhesive to those areas of the blanks which are to receive the strip sections, the means for detaching said sections from the strip including pulling members spaced to act only when etween them.

4;. Ina machine having means for causing blanks to travel and means for successively detaching sections of predetermined length from a strip, means for bringing the stripsections and blanks into superimposed relationship, and a rotary gluing arc in position 'to successively apply stripes .of adhesive to the travelling blanks before the strip sections are in contact with the blanks, the means for detaching said'sections from the strip including pulling members spaced to act only when i a blank and strip are between them.

5. Ina machine of the character described,

the blanks, an intermittently acting strip weakener, means for drawing a strip past said weakener and pressing it on the blan (S, said drawing means including pulling members spaced to act only when a blank and st-ripare between them, and guides for the strip intermediate the weakener and said strip-drawing means, oneof said guides being adjusts able to vary the length of a strip section reaching from the weakener to the strip drawing means.

6. In a machine of the character described, ablank carrier, means for applying glue to the blanks, an intermittently acting strip weakener, rolls for drawing a strip past said \veakcner and pressing it on the blanks, said rolls being spaced to act only when both a blank and strip are between them, and guide rolls for the strip intermediate the weakener and the strip-drawing rolls, one of said guide rolls being adjustable to vary the length of a strip sectionrea'ching from theweakener to the strip-drawing rolls.

' 7." A machine for aflixing sections of strip material to blanks, comprising means for causing blanks to travel, means for applying adhesive stripes to the blanks, a rocker having a blade for acting on the strip material at spaced intervals to provide strip sections, and means for pressing the strip sections successively on the adhesive stripes of the travelling blanks, said pressing means including pulling members spaced to act only when a blank and strip are between them.

8. A machine for 'aflixing sections ofstrip material to blanks, comprising means for causing blanks to travel, means for applying adhesive stripes to the blanks, a rocker having a blade for acting on the strip material at spaced intervals to provide strip sections, a gripping member carried by said rocker to hold the strip during the action of said blade, and means for pressing the strip sections on the adhesive stripes of the trav-' elling blanks, said pressing means including pulling members spaced to act only when a blank and strip are between them.

9. A machine for afiixing sections of strip material to blanks, comprising means for causing blanks to travel, means for applying adhesive stripes to the blanks, means for weakening the strip material at spaced intervals to provide strip sections, means for pressing the strip sections successively on the adhesive stripes of the travelling blanks, rolls for exerting a pulling action on the combined blanks and strip sections, said rolls being spaced to act only when both a blank and strip are between them, and a gripper to hold the strip material during the operation of said pulling rolls.

10. A machine for aflixing sections of strip material to blanks, comprising means for one recess being wider than the other.

causing blanks to travel, means for applying adhesive stripes to the blanks, means for weakening the strip material at spaced intervals to provide strip sections, and means for pressing the strip sections successively on the adhesive stripes of the travelling blanks, said pressing means comprising a pair of rolls permanently spaced to avoid having any pressing action on the strip material alone, one of said rolls being peripherally recessed. 12. A machine for affixing sections of strip material to blanks, comprising means for causing blanks to travel, means for applying adhesive material to the blanks, means for weakening the strip material at spaced intervals to provide strip sections, and means for pressing the strip sections successively on the adhesive stripes of the travelling blanks, said pressing means comprising a pair of rolls permanently spaced to avoid having any pressing action on the strip material alone, one of said rolls having two recesses in its periphery,

13; A machine for aflixing sections of strip material to blanks, comprising means for causing blanks to travel, means for applying adhesive stripes to the blanks, means for weakening the strip material at spaced inter- I vals to provide strip sections, a pair of per-. manently spaced rolls for .pressing the strip sections on the blanks, and a pair of rolls for exerting apulling action on the combined blanks and strip sections.

14. A machine for affixing sectlons of strip 1 material to blanks, comprising means ,for causing blanks to travel, means for applying adhesive stripes to the blanks, means for weakening the strip material at spaced intervals to provide strip sections, a detent for preventing backward movement of the strip material, and means for pressing the strip sections successively on theadhesive stripes of the travelling blanks, said pressing means including pulling members spaced to act only when a blank and strip are between them.

In testimony whereof I have affixed my signature.

HAROLD J. GObS.

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