US1666035A - Machine for use in making boxes - Google Patents

Description

C. J. WESTIN MACHINE FOR USE IN MAKING BOXES April 10, 1928.

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Patented Apr. 10, 1928.

, UNITED s'm'rss 1,666,035 I PATENT OFFICE.

.. CHARLES J. WESTIN, OF ROGKAWAY, NEW JERSEY, ASSIGNOR TO 'WIREBOUNDS PATENTS COMPANY, A CORPORATION OF MAINE- MACHINE FOR USE IN MAKING BOXES.

App1ica.tion filed June 22,

This invention relates to machines for use in making boxes, crates or the like, and particularly to machines for stapling together box or crate parts and for applying binding 6 wire thereto.

Among other objects, the invention is in-- tended to provide certain improvements contributing to the efficiency and practicability of operation of such machines.

In thedrawings: 1

, Fig. 1 is a side elevation of a wirebound box blank machine embod ing the invention.

. Fig. 2 is a front elevation of the stapling end of the machine viewed from the line AA in Fig. 1.

Fig. 3 is an enlarged side elevation of one of the staple-forming and drivingunits.

- Fi 4 is a sectional plan view taken on the line B--B of Fig. 3. y

Fig. 5 is a sectional view taken on the line C -Cof Fig. 4. 4

Figs. 6, 7 and 8 are similar" views showing the parts in different positions taken by them during a staple-forming and driving operation.

9 is a front elevation of a sin leforming and driving unit seen from the ine D-D in Fig. 6. I 'Fig. 10is a front elevation of a portion 0f the staple-forming and driving mechanism'seen from the line E-E in Fig. 4.

v Fig. 11 is a sectional view taken on the line FF of Fig. 10.

Fig.12 is an enlarged side elevation of the 3s sta le-wire-feeding mechanism. v

i 13 is a sectional plan view taken on the line GG of Fig. 12.

The machine selected for illustration consists generally of work-forwarding means .for re atively positioning box or crate parts and feeding them to staple-forming. and driving mechanism which forms staples from staple .stock wire automatically fed thereto, and drives the staples over bindin wire into the box or crate parts. Y

The work-forwarding means consists of endless conveyers 1 rovided with work-positioning orspacer locks (not shown) ad- -gjustabl yv secured to the conveyers 1. The

so conveyjers 1, which travel in channel guides 2, are trained over sprocket wheels 3 fast on a shaft 4 atthe delivery end of the machine and over sprocket wheels 5 on a shaft 6 at the receiving end of the machine. The conveyer chains 1 are advanced intermit-.

1925. serial' No. 38,790.

tently by a pawl 7 and a ratchet wheel 8 operated by an eccentric 9 on a shaft 10, as best shown in Fig. 1.

The stapling mechanism is carried by cross-bars 11 and 12. Cross-bar. 11 is rigidly secured to the side-frames of the machine, while cross-bar 12 is mounted in guideways 13- formed in the side-frames of the machine, and is given an up and down movement by (eccentrics 14 on shaft 10 through pitmen 15. The arrangement is such that the staple-driving is done between feed steps of the work and while the work is stationary. y

'Any desired number of staple-forming and drivin units may be secured to cross bars 11 an 12 depending upon the number of binding wires to be stapled to the box parts. These units are substantially identical and a description of one will suflice.

The illustrative staple-forming and driving unit is best shown in Figs. 3 to 13 inclusive. It is constructed and arranged to form two staples at each cycle of operation and drive the staples indirect alignment over the-binding wire into the box parts a certain fixed distance. apart, for example, one and three-quarter inches apart, thus permitting the work to be fed three and one-handinches between stapling operations. It. will be apparent that the stapling unit may be constructed and arranged to drive the staples farther apart than one and three-quarter inches and thereby permit the work to be fed more than three and ue-half inches between stapling operations.

Each stapling unit'comprises a pair of staple-forming and driving mechanisms, each adapted to cut ofl:' a length of staple stock wire, form it into a staple and drive the staple downward into the work.- The, two staple-forming and drlving mechanismsof each unit are housed in a lower casing 17- vsecured to cross-bar 11, and the operating an upper cas-' arts therefor are carried by mg 16 secured to cross-bar 12.

Staple stock wires 18, from which the staples are formed, are carried by reels 19, pass over rollers 20 and are fed in pairs to each stapling unit; the wire-feeding mechanism being arranged to feed intermittently a suflicient length of each wire to form astaple.

The two strands of staple'stockwire 1.8 for. each stapling unit are fed by a single:

feed roller 21 which cooperates" with two tension rollers 22 and 23, the outer surfaces of said rollers being knurled to grip the wires between them. One strand of wire is gripped between feed roller 21 and tension roller 22 while the other strand of wire is gri ped between feed roller 21 and tension rol er 23. Feed roller 21 is keyed to a shaft '24 journaled in the side-frame of the machine and is rotated intermi tently by a ratchet and pawl mechanism 25 through pit man 26 and an eccentric 27 on shaft 10.

Tension roller 22 is loosely mounted on an eccentric 28 fast'on a shaft 29 journaled in a bushing 30 carried by the lower casing 17.

Eccentric 28, through the action of a spring 31, tends to press tension roller 22 toward feed roller 21; said spring 31 being secured at one end to a bracket 32 on the casing 17 and at the other end to an arm 33 bolted to a collar 34 which is fast on shaft 29. Tension roller 23 is loosely mounted on an .eccentric 35 rotatably mounted on bushing 30, and is pressed toward feed roller 21 by the eccentric 35 through the action of a spring 36 secured at one end to the bracket 32 and at the other end to an arm 37 bolted to eccentric 35.

While tension rollers 22 and 23 are independently mounted on se arate eccentrics and are therefore free to ta e difierent positions relative to feed roller 21, they are caused to rotate in unison by a key 38 carried by tension roller 22 which key fits in a keyway 39 formed in tension roller 23.

To prevent slip age between feed roller 21 and tension rol ers 22 and 23, a gear 40 is secured to feed roller 21, which gear meshes with a gear 41 secured to tension roller 22.

Among other advantages, the arrangement of the tension rollers on independent eccentrics insures the proper feed of both strands of staple stock wire regardless'of va-' riations'in the thickness of said wires, as the position of each tension roller relative to the feed roller 21 is inde endently controlled so that each strand of wire -is firmly gripped at all times between its tension roller and feed roller 21.

Such arrangement also permits two wires of the same or different thicknesses to be fed by one'feed roller, thus reducing the size of the stapling unit and thereby making it possible to arrange the several stapling units in closer proximity to each other.

The strands of staple stock wire 18, which are fed by feed roller 21 and tension rollers 22 and 23 pass through guide tubes 42 and over loop bars 43 fast on arms 44 pivoted at" 45 to the front plate of lower casing 17.

a When the wires have been fed over the loop bars 43, staple-formers 46 descend cutting the wires and bending' them over their re-' .spective 400' formers 46 eing provided with a cutting bars to form the staples;

neeaoac gu1de tubes 42 to .sever the wire .therebetween. Afterthe staple-formers 46 have formed staples over 100 bars 43, the loop bars are forced out of line and staple-drivers 47, carried by driver plates 49, descend driving the staples from the formers 46 into the work.

The staple-formers 46 are slidably mounted in the lower casing 17 and are forced downward by latches 48 pivoted to driver plate holders 59 which are suspended from upper casing 16.' When formers 46 have completed the formation of the staples, latches 48 are forced out of contact with the formers 46 bycam surfaces 50 formed on the front plate of lower casing 17. When latches 48 are forced out of contact with formers 46, the formers are yieldingly pressed downward against the work by spring-pressed rods 51 which are secured to the upper ends of the formers 46 and are slidable in openings formed in the upper casing 16.

After latches 48 have been released from contact with formers 46, driver plates 49 continue their downward movement. Cam plates 52 secured to driver plates 49 engage cam surfaces 53 on loop bar arms 44 and swing the loop bars 43 out of line. Drivers 47 secured to driver plates 49 then drive the staples out of the formers 46 into the work.

Upon theupstroke of driver plates 49, cam

plates 52 swing the loop bars 43 back into i the formers 46, and the drivers 47, which slide in keyways formed in the formers 46,

;to permit wires for the next staples to be fed into position by feed roller 21 and tension rollers 22 and 23. Latches 48 are pressed back into their original positions above the formers '46 by springs 54.

The binding wire which is stapled to the work is carried by reels 55, passes over rollers 56 suspended from the upper framework of the machine and thence under rollers 57 carried by lower casing 17, and is pulled along with the work by reason of its attachment thereto, the rollers 57 being so arranged as to guide the binding wire beneath the formers 46 in position to be straddled by the staples when they are driven into the work.

The conveyors 1 and their channel guides 2 act as supports or anvils for the drive thrust of the staplingunits located directliy above the conveyers. When additional bin ing wires intermediate the two outside binding wires are stapled to, the work, clincher" driving mechanism is best s own in igs. 5

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' descended and are about to cut oil the wires inches.

18 and bend them over the loop bars 43. In Fig.7, the formers 46 have. completed the formation of the staples and cam. plates 52 have swung the loop bars 43 out of line. In Fig. 8, the drivers have descended and driven the staples from the formers 46 over the binding wire into the box parts. Upon completionofthe drive stroke the upper crossbar 12 of the machine raises the parts'to the position shown in Fig. 5 and the ratchet and pawl mechanism 25 rotates feed roller 21 and tension rollers 22 and 23 the proper distance to feed in wire for the formation of the next staples; the springs 31 and 36 acting, at all times to press t-he tension rollers 22 and 23 toward feed roller 21 to insure the feed of the proper length or wire through the guide tubes 42.

It will be noted that each staple-forming and-driving unit forms two staples simultaneously and drives them simultaneously over a binding wire into the box parts; and that said two staples are driven in alignment longitudinally of the binding wire.

It will also be noted that the two stapleforming and. driving mechanisms of each stapling unit are constructed and arranged to be housed in one casing, thus permitting the forming and driving simultaneously of two staples in direct alignment and in close proximity to each other, tor example, as close together as one and three-quarter This is particularly advantageous in the manufacture of wirebound boxes and crates in which the best results are obtained by driving the staples approximately one and three-quarter inches apart. Heretofore wirebound box blank machines have been equipped with stapling units which formed and drove a single staple at each cycle of operation. This restricted the feed steps of the work between stapling operations to a distance equalv to the distance between adjacent staples and this limited the output of the machine. Applicants tandem stapling unit doubles the output of the machine by permitting feed steps of the work equal to twice the distance between adjacent staples.

It has been pro osed to increase the feed steps of the work y employing two stapling units located one behind the other in the direction ot travel of the work. But such an arrangement. is impracticable commercially because it requires the use of an extra set of 1 stapling units, and such units cannot be positioned close enough together to drive the,

tance between the stapleswhich arev driven into the work, is intended to cover the usual and normal spacing of staples now in general use in the wirebound box making art, namely a spacing of not to exceed three inches.

Obviously, the invention is not limited to thespecific embodiment thereof shown for purposes of illustration, as it may be embodied in various forms and may be used to advantage in Various combinations and subcombinations as defined in the sub-joined claims.

Having described the invention, what is claimed is:

1. In a wirebound box blank machine, means for applying binding wire to box parts compris1ng,'1n combination, stapleforming and driving mechanism adapted to form a plurality of staples from a plurality of staple stock wires automatically fed thereto and to drive the same in close spaced relationship over a b-indin wire into the work, and means to feed a p urality of staple stock wires to said mechanism comprising a single feed roller cooperating with a plurality of tension rollers.

2. In awirebound box blank machine,

means for applying binding wire to box arts comprising, in combination, stapleorming and driving mechanism adapted to form a plurality of staples from a plurality of staple stock wires automatically fed thereto and to drive the same in close spaced relationship over a binding wire into .the

work, and means to feed a plurality of staple stock wires to said mechanism comprising a single feed roller cooperating with a plurality of tension rollers independently mounted and yieldingly pressed toward said feed roller.

3. ln a wirebound box blank machine, means for applying binding wireto box parts comprising, in combination, staplei'orming and driving mechanism ada ted to form a plurality of staples from a p urality of staple stock wires automatically fed thereto and to drive the same in plose spaced relationship over a binding wire into the work, and means to feed a plurality of staple stock wires to said mechanism comprising a single feed roller cooperating with a plurality of independently mounted ten sion rollers. I

4. In a wirebound box blank machine,

means for applying binding wire to box parts comprising, in combination, stapleforming and driving mechanism adapted to form-a plurality of staples from a plurality of staple stock wires automatically fed thereto and to driye the same in close spaced relationship over a binding wire into the work, and means to feed a plurality of staple stock wires to said mechanism comprising a feed roller, a plurality of tension rollers I cooperating therewith and each mounted 1 imeaose on a separate eccentric, and means yielding- 7 1y to press each eccentric toward said feed roller.

- staple stock wires automatically feed thereto and to drive said staples in close spaced relationship over a binding wire into the box parts, and means to feed a pair of r to drive said staples in close relationship staple stockwires to said mechanism comprising a single feed roller cooperating with a pair of tension rollers.

6. In a wircbound box blank machine, means for applying bindingwire to box arts comprising, in combination, stapleforming and driving mechanism ada ted to form a pair of staples from a pair 0 staple stock wires automatically fed thereto and over a bindin wire into the box parts, and means to fee a pair of staple stock wires to saidmechanism comprising a single feed roller cooperating with a pair of tension rollers; said tension rollers being independently mounted and each yieldingly pressed toward said feed roller.

7. In a wirebound box blank machine, means for applying binding Wire to box parts COHIPIlSlIlg, in combination, a plurality of staple-forming and driving instrumentalities housed in a single casing and constructed and arranged to form simultaneously a plurality of staples from a plurality of staple stoc wires automatically fed thereto and to drive the same in alignment and in close spaced relationship over a binding wire into the box. parts.

8. In a wlirebound box blank machine, means for applying binding wire to box parts comprising, in combination, a pair of staple-forming and driving instrumentalities housed in a single casing and constructed and arranged to form simultaneously a pair of staples from a pair of staples stock wires automatically fed thereto and to drive the same in alignment and in close spaced relationship over a binding wire into the box parts.

'9. In a wirebound 'box blank machine, means for applying binding wire to box parts -compr1s1ng, in combination, staple formin and driving mechanism adapted to form simultaneously a lurality of staples parts, and means to feed said plurality of staple-'stockwires to said mechanism.

10. In a wirebound box blank -machine, means for applying binding wire to box parts comprising, ,1n comblnation, staple forming and drivlng mechanism adapted to form simultaneously a pair of staples from a pair of staple-stock wires automatically fed thereto and to drive simultaneously said pair of staples spaced substantially 1% 1nches apart 'over a bindin wire into box parts, and means to feed sai pair of staple stock Wires to said mechanism.

In testimony whereof, I have signed my name to this specification.

CHARLES J. WESTIN.

from'a plurality of stap e-stock wires auto-

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