US2289010A - Printer slotter feed - Google Patents

Printer slotter feed Download PDF

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Publication number
US2289010A
US2289010A US393873A US39387341A US2289010A US 2289010 A US2289010 A US 2289010A US 393873 A US393873 A US 393873A US 39387341 A US39387341 A US 39387341A US 2289010 A US2289010 A US 2289010A
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Prior art keywords
feed
blanks
bar
stack
blank
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Expired - Lifetime
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US393873A
Inventor
Henry B Greenwood
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F X HOOPER Co Inc
F X HOOPER COMPANY Inc
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F X HOOPER Co Inc
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Priority to US393873A priority Critical patent/US2289010A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/24Separating articles from piles by pushers engaging the edges of the articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/42Piling, depiling, handling piles
    • B65H2301/423Depiling; Separating articles from a pile
    • B65H2301/4232Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
    • B65H2301/42322Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile

Description

July 7, 1942. H. B. GREENWOOD PRINTER SLOTTER FEED Filed May 17, 1941 4 Sheets-Sheet l HENRY B. GREE/vwooo July 7, 1942- H. B. GREENWOOD PRINTER SLOTTER FEED Filed May 17, 1941 4 SheeLS--Shet-V(l 2 i v 1H/vmbo@ HENRY B. Grec/vwo oc July 7, 1942. H. B. GREENWOOD PRINTER SLOTTER FEED Filed May 17, 1941 4 Sheets-Sheet 3 /ENRr B rerslvwooo I QQOQMQwJV. l'

July 7, 1942*. H. B. GREENwooD 2,289,010

PRINTER SLOTTER FEED Filed May 17, 1941 `4 Sheets-Sheet 4 fle/MY B. GHEE/v'wo oo MTA/ESS n Patented `Iuly 7,k 1942 UNITED STATES PATENT oFFIcE 2,289,010 PRINTER sLorTER FEEn Henry B. Greenwood, Baltimore County, Md., as-

signor to F. X. Hooper Company, Inc., Glen Arm, Md., a corporation of Maryland Application May 17, 1941, Serial No. 393,873

7 Claims.

The invention relates to printer slotters and similar machines in which box blanks or the like, of stiff and relatively thick manterial as corrugated board or fiber board are fed from the bottom of a stack of blanks resting on the table at the front of the machine by means of reciprocating feed members which engage the front edge of each blank in turn and advance it into the bite of the rollers. The stack of blanks is spaced in front of the pull rollers by the gates, and the feed members advance each bottom blank in turn from the gates into the bite of the rollers. As these rollers require a definite determinable period of time to pass each blank of a given width in the direction of the feed, it is necessary in order to accommodate the machine to the operation upon blanks of widely different widths to permit excessively wide spaces between the narrower blanks or to provide a suitable variation of the interval between the feeding of the successive blanks so that the blanks narrower than a given medium width dimension are fed at relatively short intervals and those wider than this dimension are fed at longer intervals.

The feeding apparatus which is the subject of the present invention is of the type which is adapted in what may be for convenience termed its normal operation to feed relatively narrow blanks, and all blanks of a width in the direction of the feed which is less than a width predetermined with reference to the ability of the machine to treat the blanks at normal or standard intervals, and to feed wider blanks at intervals of greater length than the standard feed intervals. Under these circumstances, the narrowest blanks of those fed at normal intervals are in their progress through the machine quite widely spaced and the widest blanks in the same .class are closely related each to the next.

As the function of the reciprocating feed is to advance the blanks from the gate into the bite of the pull rolls and the feed is adjustable to the position of the front edge of the stack, the stroke of the feed need not be adjustable. An essential limitation of the relation to the size of blanks to the timing of the feed is that the blanks shall not become overlapped in the machine, the danger of overlapping being encountered in connection with blanks wider than the predetermined standard width.

In the form of the machine which is the sub- J'ect of the invention the front end of the stack is supported on carriers or supports mounted on a cross bar which extends across the front of the machine. This cross bar and' these supports and the feed which latter is arranged, according to existing practice, are adjustable to the width of the blanks in the direction of feed and when blanks of a width greater than the' predetermined width are to be fed, this cross bar with its entire set of carriers or supports is raised at intervals, raising the front of the pack above thepath of the reciprocating feed members or hooks so that a corresponding proportion of the feeding strokes are rendered ineffective. The intervals at which the front of the pack is thus raised, though they are, in theory, at least, subject to variation, are to best advantage equal to twice the interval of reciprocation of the feed members, thus rendering every alternate feeding stroke, i. e., half of the feeding strokes, ineffective to advance the blanks.

In this way, the reciprocating feed is changed from a timing suitable to one class ofr blanks of a width less than a predetermined widthy to a timing suitable to a wider class of blanks` exceeding this width and this variation of the feed is accomplished without interference with the adjustment of the machine to the length of blank and with increased simplicity and rigidity of construction and greater uniformity and certainty of operation.

The mechanism for raising the cross bar and front supports for the blanks or stack is connected to the driving mechanism by means of a clutch or equivalent means to be operated only when needed to reduce the number of effective feeding strokes per unit of time, for feeding blanks of excess width, as compared to those for which the timing of the reciprocating motion of the feed referred to as normal is selected or determined. I

In the accompanying drawings:

Fig. 1 is a fragmentaryv side elevation fof the front end of the feed table showing the carriers and supports and transverse supporting'` bar in their normal or lowermost position in relation to the table in which position the reciprocating feed makes engagement at every stroke with ,theblank at the bottom of the stack.

Fig. 2 is a similar fragmentary vie,y ft ,same portion of the machine with the carriersand supports and transverse supporting barg'raised whereby the stack is elevated, the bottom' blank being raised above the path of the reciprocating feed. c u

Fig. 3 is a fragmentary section on theline 3-3 in Fig. 2.

Fig. 4 is a top, plan View of the table showing the c'arriersandsupports and transverse 4supporting bar, the feed members and the transverse feed bar.

Fig. 5 is a fragmentary elevation of the portion of the machine immediately to the rear of that shown in Fig. 1.

Fig. 6 is a fragmentary section on the line -S in Fig. 4.

Fig. 7 is a fragmentary section on the line 1-1 in Fig. 4.

Referring to the drawings by numerals each of which is used to indicate the same or similar parts in the different gures, the construction shown comprises upright side frames I and 2, feed table 3 and feed gates 4, and pull rolls 5 and 6. The pull rolls 5 and 6 are provided on their shafts 5' and 6' respectively with drive gears 1 and 8 secured to shafts 5 and 6'. The gear 1 drives a toothed gear 9 to the left which drives a gear I above it which, in turn, drives the upper pull roll gear 8.

'Ihe toothed gear I3 on the shaft 5 meshes with and drives a large gear which, in the form shown, is mounted directly beneath the pull rolls and 6 on the shaft This gear is provided with a crank pin I2 which engages a slot I4 in the upright rocking lever I5 secured to a transverse shaft mounted in the frame of the machine according to the usual practice and not shown. In this way a rocking motion is imparted to rocking levers I1 on the same shaft rocking in a fore and aft plane at each side of the machine. These rocking arms |1 have pivotally connected to their upper ends forwardly extending connecting rods I8 each of which is connected at its forward end as by wrist pins I9 and depending brackets 20 to a sliding feed bar 2 I. There are two of these feed bars 2| mounted to slide in suitable slots 22 in table 3, as best shown in the plane Fig. 4, there being one said sliding feed bar at each side ofthe table 3.

These same sliding feed bars 2| are shown as mounted on ball bearing rollers 22 on tracks 23' in slots 22; and sliding bars 2| are connected at their forward ends to a transverse feed bar 24, see Figs. l and 3, which is provided with a series of the usual feed members 25 for engaging the forward edge of each successive bottom sheet or blank 66 of the pack or stack 61, i. e., the edge at the right in Figs. l and 2.

The feed bar 24 is mounted for adjustment along the table in the direction of the feed to correspond to the width of the blanks, being -secured in any desired position of adjustment relatively to the sliding bars 2|, by means of screw bolts 36 extending through runners 36 and engaging nuts 21. The runners 36 engage the upper slots 38 and the nuts 39 are located on lower slots 38 both said slots extending longitudinally of said sliding feed bars 2| and being suitably connected at 31 to pass bolts 36.

Transverse supporting bar 21 is shown in the form of an inverted channel the exact form of cross section not being important. This cross j bar is secured at its respective ends in any suitable manner as` by means of clamping screws 28 'andnuts 29 to the' longitudinal carrier bars at f 3|-`-2t each side of the table. The blocks 30 supshown in cross section in Figs. 3 and 7, in which slot the nuts 29 areamounted being clamped by the corresponding screws 28 in the desired position of adjustment of the transverse supporting bar 21.

The transverse supporting bar 21 is provided with a series of forwardly extending upright carriers 34 spaced transversely of table 3 and arranged alternately With the feed members 25, Fig. 4. These carriers 34 are provided with projecting supportingplates 35 at the bottom of each carrier. The respective longitudinal carrier bars 3| and thsliding bars 2| are preferably calibrated to show the proper positioning of the feed bar 24 and the transverse supporting bar 21 to correspond to sheets of the respective widths designated in said calibrations.

As already noted the transverse supporting bar 21 is clamped in any desired position of adjustment relatively to the longitudinal carrier bars 3| by means of the clamping screws 28 operated by handles 28 and engaging the nuts 29 in slots 33. In this way the carriers 34 are adjusted to the width of the blanks.

As already suggested, the longitudinal carrier bars 3| are pivotally mounted in a stationary portion of the machine, the pivots being indicated by reference character 40 at the rear side of the table and it is by raising these bars simultaneously as hereinafter described that the transverse supporting bar 21 with the carriers 34 and supports 35 are raised at intervals whereby a portion of the feeding stroke of the feed members or hooks 25 carried by the feed bar 24 are rendered inoperative, the pack 61 of blanks being raised so that the front edge of lower blank 66 is above the path of these members.

It being the sole function of feeder members 25, according to the usual practice, to advance the successive bottom blanks 66 or particularly the rear edges thereof from the gate 4 to the grip of the -pull rolls 5 and 6, no very close adjustment of the feed has been found necessary. Accordn ing to the form of the ivention shown, the revciprocations of the feed bar 24 and feed member 25 are timed to feed the blanks in such a way that the blanks of a. Width in the direction of the feed which corresponds to the circumference of the operating rolls as printing rolls are fed in close relation of the forward edge of one to the rear edge of the next. These rolls measure from 50 to 60 inches more or less.

When narrower blanks are employed the'spacing is increased andV when blanks of a width greater than the width thus determined which may be about 50 inches, are to be operated upon. the forward edge of the pack is raised at every alternate reciprocation of the feed 24, and 25, thus making half of the feeding strokes ineec tive, otherwise the blanks would overlap.

According to the construction shown, carrier bars 3| are provided each with a depending bracket 4| in which is mounted a cam roller 42 engaging a cam 43 at each side of the machine gli asrotating shaft 44 controlled by a clutch 45,

According to the construction shown, the shaft 44 is driven byA a sprocket 46 rotating freely thereon and driven in a manner to be described and there is a clutch member 41 keyed to the shaft 44 by way of a key 48. The clutch 45 comprises clutch teeth 45' and these teeth are thrown into and out of engagement by sliding the clutch member 41 along the shaft 44 by manual engagementof the wheel 49. The clutch is held in engagement by a spring ball lock comprising spring pressed ball 50 and socket 50 and it is held in a disengaged position by the vseating: of the ball 50 in a second ball cavity 5I. i

The sprocket 46, see Fig. 5, is driven by a chain 54 operated by a sprocket 55 on the shaft 58 mounted in suitable bearings in the machine frame and driven by a toothed gear 59 which meshes with and is driven by a gear B on a shaft 6l which is, in turn, driven by a toothed gear 62, meshing with the toothed gear Il which is timed with the machine and which operates the reciprocating feed. The drawings are more or less diagrammatic, there being no attempt to illustrate the precise gear ratio.

The operation of the invention will be easily understood from the description and preamble. When blanks of a known width in inches measured in the direction of feed are to be operated upon, both the transverse feed bar 24 with its feed members 25 and the transverse supporting bar 21 with carriers 34 and supports 35 are set in accordance with suitable calibrations on the sliding feed bars 2| and the carrier bars 3l for the transverse supporting bar 21, bolts 36 and 28' being unclamped and reclamped in suitable adjustment for this purpose. Otherwise, the machine may be adjusted independently of the calibrations to the blanks themselves.

If the blanks are of a width in the direction of feed greater than a width predetermined by the operative members of the machine as printing or creasing rolls which may be for convenience fixed at 50, the normally released clutch 45 is engaged whereby the cams 43 on the shaft 44 are placed in operation and the carriers 34 and supports 35 are raised at suitable intervals to render inoperative every alternate feeding stroke of the bar 24 and feed members 25.

In accordance with the construction shown, the speed of rotation of shaft 44 is half that of the gear ll, and the cams 43 so designed so that at these relative speeds they elevate the carrier bars 3|, carriers 34 and supports 35 for successive intervals corresponding to every alternate stroke of the bar 24 which, according to the arrangement described provides for feeding the blanks of Widths in the direction of the feed which as greater than the standard width, chosen for convenience of description at 50 inches, depending entirely on the size of the rolls.

If blanks of a width less than the above arbitrarily selected standard are to be operated upon, the clutch 45 is released by moving the clutch member 41 to the left in Fig. 6 overcoming the engagement of the ball 50 with its socket 50 and disengaging the teeth 45' and moving the clutch member 41 to a position in which the ball 50 engages the socket 5I, in which position the clutch is held released and the rotation of gear 46 fails to rotate the shaft 44 and the cams 43.

Under these circumstances, the carriers 34 remain in their lowermost position as shown in Fig. l, and each successive feeding stroke of the bar 24 and feed member 25 is effective, it being understood, as already pointed out, that feed members 25 engage the front edge of each bottom blank 66 between the spaced carriers 34.

` An important accomplishment of the improvement consists in the fact that the adjustment of feed bar 24 with its feed members 25 and transverse supporting bar 21 with the carriers 34 and their abutment surfaces 34' are as and precisely the same as if there were no arrangement for raising the front of the stack and thus rendering a portion of the feeding strokes inoperative to accommodate a range of blank sizes greater than could be accommodated by the normal operation of the feed. On the other hand, in the prior art constructions for this purpose complicated, troublesome and expensive devices have been resorted to for this purpose and with some of those shown in the patents adjustment is so difficult, that they have never come into practical use. i,

Having thus described kmy invention and the manner of constructing, and using the same, I would have it understood that the description is specific and in detail in order that the manner of constructing, applying, operating and using the invention may be fully understood, however. the specific terms herein are used in a descriptive rather than in a limiting sense, the scope of the invention being defined in the claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a machine of the printer slotter type for operation upon box blanks, said machine having a feed table for a stack of blanks and pull rolls, and gates for spacing the blanks from the pull rolls, the combination of longitudinal carrier bars, a transverse supporting bar mounted on the carrier bars and spaced abutments and supports for the front edge of the stack mounted on said transverse bar, said transverse bar and said abutments being adjustable along said carrier bars to conform to the width of the blanks in the direction of feed, reciprocating feed members engaging the rear edge of the successive bottom blanks between said abutments, and means for raising the carrier bars and the transverse bar and sup ports at intervals corresponding to the alternate strokes of the reciprocating feed, thus raising the front of the stack of blanks whereby the bottom blank is removed from the path of the feed members at intervals corresponding to alternate strokes of the feed.

2. In a machine of the printer slotter type for operating on box blanks of stiff material, said machine having a table for supporting a stack of blanks to be fed, a gate for positioning the rear of the stack and adapted to release each bottom blank in turn and a reciprocating feed having means adapted to engage the front edge of each bottom blank of said stack, in turn to advance the blank, the combination of carrier bars extending along said table in the direction of feed and free to swing upwardly at their forward ends, a transverse supporting means near the front of the table and mounted on said carrier bars for supporting the front of the pack, and means for raising said carrier bars at regular intervals in time with a predetermined proportion of the strokes of the feed moving the bottom blank out of the path of the feed.

3. In a printer slotter having a feed table adapted to support a stack of blanks of stiff material and a reciprocating feed, having means for engaging the front edge of each bottom blank in turn, a transverse supporting bar extending across the table and having supports for the front edge of the stack projecting rearwardly, carrier bars extending along the table in the direction of the feed on which carrier bars the transverse supporting bar is mounted for adjustment in the direction of feed to accommodate blanks of different Widths and means controllable by the operator for raising the carrier bars at intervals corresponding to alternate feeding strokes whereby the bottom blank is removed from the path of the feeding means.

4. In a printer slotter having a feed table adapted to support a stack of blanks of sti material and a reciprocating feedghaving means for engaging the front edge of each bottom blank in turn, a transverse supporting bar extending across the table and having supports for the front edge of the stack projecting rearwardly, said bar having means for positioning the front of the stack, carrier bars extending along the table in the direction of the feed on which carrier bars the transverse supporting bar is mounted for adjustment in the direction of feed to accommodate blanks of different widths and means controllable by the operator for raising the carrier bars at intervals corresponding to alternate feeding strokes whereby the bottom blank is removed from the path of the feeding means.

5. In a printer slotter having a table for a stack of blanks and a reciprocating feed for the blanks, a carrier bar extending along said table in the direction of feed, a support for the front of the stack on said bar and means for raising said bar and said support at intervals coinciding with predetermined strokes of the feed moving the stack out of the path of the feed and rendering said strokes ineffective.

6. In a printer slotter having a. table for a stack of blanks and a reciprocating feed for the blanks, a carrier bar extending along said table in the direction of feed, a support for the front of the stack on said bar adjustable along the bar which is pivotally mounted at the rear and means for raising said bar and said support at intervals coinciding with predetermined strokes of the feed moving the stack out of the path of the feed and rendering said strokes ineffective.

7. In a machine of the printer slotter type for operating on box blanks of stiff material, said machine having a table for supporting a stack of blanks to be fed, means for positioning the rear of the stack and adapted to release each bottom blank in turn and a reciprocating feed having means adapted to engage the front edge of each bottom blank of said stack, in turn to advance the blank, the combination of a transverse supporting bar near the front of the table mounted for movement in an approximately vertical direction and having spaced supports for the pack adapted to engage beneath the front edge of the pack, means operatively related to the bar for raising said supporting bar at regular intervals in time with a predetermined proportion of the strokes of said feed moving the bottom blank out of the path'of said reciprocating feed, and means controlled by the operator for throwing said operatively related means into and out of its operative relation to said bar.

I-IENRY B. GREENWOOD.

US393873A 1941-05-17 1941-05-17 Printer slotter feed Expired - Lifetime US2289010A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422783A (en) * 1942-11-30 1947-06-24 S & S Corrugated Paper Mach Skip feed mechanism
US2458341A (en) * 1944-08-03 1949-01-04 Andrew R Cake Carton folding machine
US2517449A (en) * 1947-06-03 1950-08-01 S & S Corrugated Paper Mach Carton blank folding machine
US2650093A (en) * 1949-03-03 1953-08-25 S & S Corrugated Paper Mach Blank feeding mechanism
US2704208A (en) * 1952-03-25 1955-03-15 F X Hooper Company Inc Printer slotter blank feed
US2705143A (en) * 1954-03-10 1955-03-29 Henry B Greenwood Skip-feed mechanism
US2756113A (en) * 1954-08-02 1956-07-24 Henry B Greenwood Adjustable bed slide for printing and slotting machines
US2826409A (en) * 1953-08-11 1958-03-11 Mead Atlanta Paper Company Machine for setting up bottle cartons
US2835175A (en) * 1953-09-24 1958-05-20 Rollohome Corp Tile laying machine
DE1100444B (en) * 1957-09-06 1961-02-23 S & S Corrugated Paper Mach A device for withdrawal of blanks, arches, plates u. the like. from a stack
US3038720A (en) * 1960-09-15 1962-06-12 Koppers Co Inc Printer-slotter blank feeder
US3341193A (en) * 1965-05-07 1967-09-12 Honeywell Inc Document picker
US4718808A (en) * 1985-04-30 1988-01-12 Mitsubishi Jukogyo Kabushiki Kaisha Delivery device of piled corrugated fiberboard boxes

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422783A (en) * 1942-11-30 1947-06-24 S & S Corrugated Paper Mach Skip feed mechanism
US2458341A (en) * 1944-08-03 1949-01-04 Andrew R Cake Carton folding machine
US2517449A (en) * 1947-06-03 1950-08-01 S & S Corrugated Paper Mach Carton blank folding machine
US2650093A (en) * 1949-03-03 1953-08-25 S & S Corrugated Paper Mach Blank feeding mechanism
US2704208A (en) * 1952-03-25 1955-03-15 F X Hooper Company Inc Printer slotter blank feed
US2826409A (en) * 1953-08-11 1958-03-11 Mead Atlanta Paper Company Machine for setting up bottle cartons
US2835175A (en) * 1953-09-24 1958-05-20 Rollohome Corp Tile laying machine
US2705143A (en) * 1954-03-10 1955-03-29 Henry B Greenwood Skip-feed mechanism
US2756113A (en) * 1954-08-02 1956-07-24 Henry B Greenwood Adjustable bed slide for printing and slotting machines
DE1100444B (en) * 1957-09-06 1961-02-23 S & S Corrugated Paper Mach A device for withdrawal of blanks, arches, plates u. the like. from a stack
US3038720A (en) * 1960-09-15 1962-06-12 Koppers Co Inc Printer-slotter blank feeder
US3341193A (en) * 1965-05-07 1967-09-12 Honeywell Inc Document picker
US4718808A (en) * 1985-04-30 1988-01-12 Mitsubishi Jukogyo Kabushiki Kaisha Delivery device of piled corrugated fiberboard boxes

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