US1229513A - Blank receiving and delivering table. - Google Patents

Description

M. E. PETERS, G. H. FATH & A. F. MILLER BLANK RECEIVINGAND DIELIVERING TABLE.

APPLICATION FILED APR.28, I916.

Patented Jun I2, 1917.

2 SHEETS-SHEET 1.

M. E. PETERS, G. H. FATH 64 A. F. MILLER.

BLANK RECEIVING ANDDELIVERING TABLE.

APPLICATION FILED APR.28,19I6,'

Patented June 12, 1917.

2 SHEETS-SHEEI 2.

pnirnn snares MELVILLE E. PETERS, GEORGE H. FATE, AND ALBERT F.- 1V[ILLER, 01? DENVER,

COLORADO.

Specification of Letters Patent.

Patented June 1L2, 1917..

Application filed April 28, 1916. Saris-1N0. 94,209.

To all whom it may concern. 7

Be it known that we, MnLvrLLn E. Pnrnns, GEORGE H. FATH', and ALBERT F. MILLER, citizens of the United States of America, residing in the city and county of Denver and State of Colorado, have invented a new and useful Blank Receiving and Delivering Table, of which the following is a specification.

Our invention relates to an automatically operating blank receiving and delivery. table mechanism for blank gumming machines; and the objects of our invention are: First, to provide a flat table-like member that is adapted to receive the blanks one at a time from their gumming cylinder and in which the blank is held in place on the table by air. suction.

Second, to provide a'simple and reliable gummed blank receiving and delivering.

table. And Third, to provide a quick receiving and delivering mechanism for gummed blanks that will receive and hold them in a flat horizontal plane and that will'deliver-and release them automatically at a predetermined point that is adapted to permit'the blank to be instantly engaged and advanced into wrapping relation with a box in a box wrapping machine.

/Ve attain these objects by the mechanism illustrated inthe accompanying drawings,

in which Figure 1, is a side view of a portion .of a

blank 'gumming machine, illustrating the application of the improved blank deliver ing table.

Fig. 2,-is a plan View of the blank dc livery end of the machine.

Fig. 3, is a vertical sectional ,view, en-

larged, on the line 33 of Fig. 1.

Fig. i, is a front view of Fig. 3, the clamping nut and washer being removed.

Fig. 5, is a sectional view, illustrating the table, one of its supporting rack bars and the gear for operating the same.

Fig. 6, is a side view, illustrating one of the blank grippers in open position, and the mechanism for holding open and for releasing said grippers. And

Fig. 7, is a side view illustrating means for opening said grippers.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the drawings,-

The numeral 1 designates a smooth, fiat top table or plate, which may be'made of any suitable material, but which we preferably make out of aluminum, and which extends; across the machine between its side frames 2 and 3. Consequently 'this table portion is preferably a flat sheet or blade of aluminum which we will hereinafter'call a'table.

This aluminum table is secured to a reciprocating supporting frame, which comprises the side rack bars 4 and to which this table is secured at the forward ends of the rack bars. These rack bars have a gear toothed rack portion extending along their lower edges from the rear end of the table, and they extend far enough back into the gumming machine to form a suitable sliding support for the table, and they are slidably supported in suitable bearings 5 that are secured on the side frames- 2 and 3.

These rack bars are reciprocated in alternate timed relation to the blank feeding,

gumming and conveying mechanism of the blank gumming machine, which we do not fully illustrate, but which is fully illustrated in our pending application Serial Number 30,471, vfiled May 25, 1915, for a blank gumming machine, and while this blank gumming and-transmitting mechanism does not appertain directly to the subject matter of our present invention, which is an improved divisional part of that machine, we deem it advisable to refer briefly toit.

To this end the gumming machine of the above mentioned pending application cornprises in its main features a blank feeding roller 6, to which the blanks B are fed one at a. time by any suitable automatically operating mechanism. From the blank feeding cylinder the blanks are fed onto a .blank gumming cylinder 7.

This blank gumming cylinder is provided with a supply of adhesive gum, which as the blanks are fed against it coats their surface that lies against. the outside surface of the cylinder with a suitable adhesive gum.

one at a time onto an inwardly retreating segment portion 8, of the gumming cyl1nder. These blanks are carried a short distance partiallyaround the cylinder, to a point where this'segment retreats into the interior of the cylinder, and when it does it exposes the edge of the blank B, which is then gripped by a row of blank gripping fingers 9 that are mounted on rotatable bars 91 at the advancing end of a plurality of apron conveyers 10. These apron convey-ers are arranged into the formof an endless conveyer, which is mounted on, a gapped transmission c'ylinderll' at one end, and on a roller 12 at its opposite end between which the lower side of the conveyer runs over an idler and tightening supporting mechanism,

- around it.

The function of these endless apron gripper fingers is to grip the exposed'edge of each blank at the'gap of. the gumming cylinder against the bar 13 when the gap is opened, and then to carry the blank it grips up over the transmission cylinder, and as they do this the blank is folded in a naturally curved plane down fiat on'the apron of the grippers that removed it from the gumming cylinder. The blanks all rest on the aprons with their gummed side uppermost; Each blank is then transmitted by intermittent movements of a length to bring each bar 13, centrally over and within a gap in the end turning roller 12, where it makes one of its stops, which particular stopping point we term its blank removing station, and at this blank removing station the bars 9 are partially rotated by mechanism 16, by which the grippers are opened, as shown in Fig. 7 and release the blanks, and when the grippers are thrown back to release the blanks, their supporting rod is automatically held by a ratchet and pawl mechanism 17 that locks the grippers ,in' an open position,

and they stay locked in this open position until released in the gap of the transmission cylinder by the cam 14, when springs 18 on the said bars 9 impart a quick partial rotation to the bars, which throws the grippers down to grip a blank to the adjacent bar 13. There are consequently three These gripper fingers 9;v

time the machine is running, 1 t

The instant before the gripper fingers open and release the blank at this blank removing station, the advancingedge of the blank is gripped by a plurality of air suc- ,tion operating blank gripping tubes 19. These tubes lift the blanks up and transmit them over and deposit them onto the table 1. These air tubes have a reciprocal stroke movement that does not vary in its distance from where they receive the blanks to where "they discharge them, and we call the point which we have marked with anarrow in Fig. 1, the discharging pointof the lolanl is transmitting system. This point becomes also the "blank receiving point of the delivery table, as indicated by 00w in Fig. 2,

cylinder to their removing station all the and box registering movement of our blank a shaft 21, that extends across'the machine and is journaled at its ends in the side frames 2- and 3 of'the machine. of this shaft extends beyond the side 3 of the machine and a pinion 22 is mounted on its end. This pinion is engaged bya vertical rack bar 23,;which is reciprocally mounted in suitable slideway bearings 24:, that are mounted on the side of the side frame 3.

To the central portion of this vertical rack bar is pivotally secured one end ofa connecting rod 25, the other end of which is connected to a rock lever 26, which will be hereinafter described.

I The table will accommodate blanks of different sizes, from about two by three inches One end square to about twelve by twenty inches square, and it is necessary that the advancing edge of each of these widely dilfering sized gummed blanks should have their ad- Vance or forwardly-feeding edge deposited drawn from under it on the return stroke of its reciprocal movement, in which case the boxes areapplied to the blanks after the table has been withdrawn from the blank, It is also just as necessary'that the table grip the blanks and hold them in straight alinement with the. ends and sides of the table even when the boxes are applied to the blanks, while they are held on and are supported by the table.

()ur invention contemplates broadly any and every and all means by which blanks as they are delivered on the table are gripped and held for any predetermined period of time. We preferably however effect this blank gripping, holding and releasing feature of the table in the following manner:

Transversely across the table and upon its advancing edge is secured a vacuum box 27, which is provided with a row of air inlet apertures 28. We preferably illustrate six of these apertures, but more or less maybe used as desired.

These air inlet apertures extend into the box that issecured transversely along the under side of the edge of the table, as shown by Fig. 5. This box is connected by suitable air tubing 29 with an operative air pump 30, that is mounted on the has plate of the machine, and which is provi ed with a piston and rod, the rod being connected to the lower end of a rock arm 31, which is operated by a cam, that is secured on one side of a disk 32, that is mounted on a'power driven shaft 33. Consequently the advance edges of theblanks have to be deposited by the air suction blank transmitting tubes directly down, over and against these air suction blank apertures, which grip and hold each blank to the table, and the body of the blank lies rearwardly on the table and the centers of the shorter blanks come into a different position from the centers of the in our pending application, Serial No. 7 6,991.

The centers of all sizes of the central body portion of the blanks must be moved to a predetermined point to receive the box. Consequently .the various sizes of blanks that our machine will transmit onto this ta ble have to be moved by the table to a cen tral point, which is the same with all sizes of boxes that will bring the center ofthe blanks directly under the center of the boX, and it is necessary that an adjustable variable throw mechanism be employed to move the table as desired to bring the central body portion of each size blank directly in alinement with the center of the box the blank is to be wrapped around, such for instance as the center of the upper and lower plungers of a box wrapping machine, of a style illustrated in our pending application Serial Number 59,860, filed November 5, 1915, for

a box wrapping machine. .1

There are a number-of ways in which we can carry out this feature of our inventionbox wrapping machine.

with a slot38, of suitable length, in which is placed a block 39, having an integral disk 40, which bears against the inner side of the lever, while a threaded stem 41 projects .from the outer face of the block, upon which a washer 42 is placed, and a nut 43 is screwed upon the stem, against thewasher, whereby the block is securely held at any desired point in the slot 38; A stud 44 projects from the face of the washer 40, and this stud passes through the lower end of the connecting r0d'25, which is held thereon by a washer 45, which is secured to the stud by a screw 46. The desired stroke of the rack bars 4 is accomplished in the following manner:

' The cam 37 is turned to the position shown in Fig. 1, when the roller 35 of the lever 26 is on the lowest point of the said cam; the nut 43 is then loosened and the block 39 is slid back to the inner end of the slot 38, carrying with it the lower end of the connecting rod 25. In this position of the. lever, the slot 38 is an arc whose radius is the pivotal point of the connecting rod 25,

as will be understood by reference to Fig. 1.

The cam is then turned until the roller 35 rests upon-its highest point; the lever 26 is then in the position shown in dotted lines, and the rock bar 23 is raised a distance equal to the length of the dotted line Z.' If this movement is not sufficient to give the required throw to the rack bars 4, the block 39 is slid forward in, the slot 38, until the vertical rock bar 23 is raised high enough to impart the required throw to the bars 4, through the medium of the pinion 22, and gear' wheels 20. V The block 39 is then clamped to'the lever 26, at this point, and by this arrangement the table will be carried forward the exact distance required to bring the centers of the blanks being run, to register with the centers of the plungers of a By this arrangement, there is no lost motion, as the rock bar 23 begins to rise, instantly, with the upward movement of the lever 26. Thus when the table is at the farthes limit of its forward movement, tl1e largest size blanks twelve by twenty will'have their central body portion directly in alinement with thecenter ofaboX,such as this size of blank would wrap around, and if the box is on the upper plunger of the box wrapping machine, the blank will be released by thetable the instant it reaches the full end of its stroke, and will be gripped by an air suction device that is mounted on the box wrapping machine. Then when the table moved backward instantly after the box machine grippers have gripped the blank,

the blank will be left with its central body portion resting on top of the lower plunger. Our table is especially adapted to deliver gummed blanks to our above mentioned box wrappin machine, as is fully described in that application. v

In the two box and table registering ap-- [plications above mentioned, an adjustable set of box guiding clips is used to guide the box, by hand centrally onto the blank.

wrapping machine. Another system is that by Which the box is placed by hand on a plunger, which then moves downand glues the bottom of the box to the central body portion of the blank, while it is still gripped by the air suction blank gripping air inlet apertures of the table, after'which the plunger moves up out of the box but leaves a I. stripper-bar in it until the plunger has moved entirely out of the box. Then an attendant picks up the box'with "the blank glued to its bottom, it having been released from the air suctiongrip of the table the instant the plunger stripper leaves it, and.

places thebox and blank by hand on the upper plunger of a box wrapping machine. The third system is that'where the box is registered by handsbetween'guiding clips directl ,and centrally against the gummed blan as it is delivered on and is held on the table, and is removed by hand from the table. g

The operation of, our blank delivery table is as follows:

r The blanks are fed into the machine to the feed roller andv onto the gumming cylinder,

where they'are coated with gum and are then transmitted onto the conveyer, and from the end of this conve'yer, whichstops each blank below the air tubes, which pick them up by eir suction and transmit them horizontally to and move down with them against-the surface of the table, which moves far enough underneath the forward end movement of the tubes to allow them to move down between the air inlet apertures of the table, which deposits the advancing l against the air suction blank gripping aper i edge of the blank directly down over and tures of the table, which grips them and holds them firmly to the table upon which they lie flat. The length of'the reciprocal stroke of the table is then adjusted so that the table will deliver the center of the central bodyportion of the blank directly unea ers der the center of thestar Fig. 2, which would be the center ofthe size of box the blank is intended to wrap by either one of the above named systems of registering the boxes against the center of the blank.

Our invention provides a reliable, very quick adjustable stroke air suction gripping blank supporting and holding 'table, and

while we have illustrated and described the preferred construction and arrangement of our invention, we'do not wish to be limited to it, as many changes might be made. without departing from the spirit of our invention. I

Having described our invention, what we claim as new and desire to secure by Letters Patent, is: r

. 1. In a blank delivering table for blank 'gumming machines, the combination of a whereby said blank is moved and delivered by said table into a box receiving position means on said table including air suction inlet apertures for gripping the blank at its blank receiving station, by an air suction force, and for holding and releasing it at its box receiving statio '2. In a blank delivering table for blank gumming machines, the combination .of a table made of a sheet or blade of aluminum, provided with a blank receiving station, means forimparting a variable throw stroke from the blank receiving point of the table forward a predetermined distance varying. with the size of the blank on the table, whereby said blank is moved and delivered by said table into a box receiving position, means on said table including air suction inlet apertures for gripping the blank at its blank receiving station by an air suction force, and for holding and releasing it at its box receiving station, said table being provided with recesses in its advance moving gripped and'held in box receiving relation when released by said table and said table said blank.

3. A gummed blank receiving and delivering table, comprisinga table made of aluminum having a smooth flat top, means on said table for gripping a blank at a predetermined blank receiving station, and means for delivering the blank at any predetermined desired point of delivery to receive a box in wrapping relation to it.

In a gummed blank receiving and de livering table, the combination with a blank gnmming machine, provided with mcansfor gumming blanks of different predetermined edge adapted to permit said blank to be lIlO sizes and for conveying them to a table re ceiving station, with a blank receiving and delivering table of aluminum or other suitable material, said table being provided with an air suction blank gripping plurality of air inlet apertures in said table arranged to grip the blanks one at a time at the tables blank gripping station and to hold to it while being forwarded to its delivery point, means including a cam actuated air pump operatively connected to said air suction blank gripping apertures of said table, arranged in timed sequence to the blank receiving movements of said table for gripping, holding and releasing said blank as desired, and means including gearing and adjustable variable stroke cam actuated mechanism for reciprocating said table from its blank receiving station to any predetermined blank and box registering and wrapping relation.

5. In a blank receiving and delivering table for blank gummingmachines, the combination of the blank delivering table, slideways on said gumming machine, rearwardly extending rack bars mounted in said slide ways, a shaft, gears on said shaft meshing with said rack bars, a pinion on said shaft,

a vertical reciprocating rack bar meshing with said pinion, means for varying the throw of said rack bar whereby a variable throw forward stroke may be imparted to said table, and means including a cam actuated lever mechanism operatively secured to the lower part of said rack bar.

6'. The combination with a frame, rack bars slidably mounted therein; a table se- .cured to said rack bars, a shaft mounted in the frame, gears thereon in mesh with the said rack bars, a pinion on the shaft, a rack bar in mesh With said pinion, a connecting rod pivotally connected at one end to said rack bar, a lever pivoted at one end to said frame, the forward portion of which. is curved in an arc, of a radius corresponding to the length of said connecting rod, and having a slot of the same curvature, a block adjustably mounted in said slot, and having apivotal connection with the other end of

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