US1353590A - Crimping and folding machine - Google Patents

Description

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CRIMPING AND FOLDING MACHINE.

Patehted Sept. 21,1920.

APPLICATION FILED MAR. 3. I920.

ISHEETS SHEET 1- l-ll-lllllllll 1. w. HOODWIN.

CRIMPING AND FOLDING MACHINE.

' APPLICATION FILED MAR.3, 1920.

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y m M W 2% v 7, mummll i qlllllfl J0 Y i i l 3 .a" 1 mum O L 1 UP mm mu Patented Sept. '21, 1920.

1 i r. A 1 Iv X H E AH IIN g a g x IFH II I l l l l I! l I ll] I l l fi i lllllll'g v APPLICATION FILED MAR. 51, 1920.

v Patentedsefit. 21,1920.

' 7 SHEETS-SHEET 3.

J. W. HOODWIN.

CRIMPING AND FOLDING MACHINE. APPLICATION FILED MAR. 3. 1920.

Patented Sept, 21, 1920.

1 sHEgTs-sHEET 4.

J. W. HOODWIN.

CRIMPING AND FOLDING MACHINE.-

APPLICATION FILED MAR. 3. 1920.

YSHEETQ-SHEET 5 Patented Sept. 21, 1920.

]..W. HOODWIN.

CHIMPING AND FOLDI NG MACHINE.

APPLICATION FILED MAR. 3, 1920.

1 ,35 ,590, I Patented Sept: 21, 1920.

7 SHEETS-SHEET 6- 'J. W. HOODWIN.

CRIMPING AND FOLDING MACHINE. APPLICATION FILED MAR. 3. I920.

PatentedSept. 21,1920.

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Fig. 5,

cnnvrrme AND roLDme vn -icHINE.

To all 10 7mm it may concern:

Be it known that I, JOSEPH W.YHOODWIN, a citizen of the United States, and a resident ofChicago, in the county of Cook and State of Illinois, have/invented certain new and useful Improvements in Crimping and Folding Machines, of which the following is a specification.

My invention relates to an improved crimping and folding machine which is particularly useful for crimping strips of paper previously transversely perforated, and then transversely folding the strip so that the small folded together compact sections of the strip may be readily detached therefrom and from one another. v

In a machine of this class, crimping rolls are usually provided for longitudinally crimping the previously transversely perforated strips, and thenthe crimping strips are subjected to transverse pressure preferably under the application of heat, to compactly press together the overlapping folds so that the strip can then be readily separated into compactly folded sections or pellets which can readily be inserted in small openings or pockets. My invention involves improved structure and operation for feeding paper blanks to the crimping rolls and from there to the pressure mechanism, an important object of my invention being to provide improved and more efiicient means for compressing the crimped' strips and for preventing distortion thereofj during the pressing operation. Another important object is to provide improved means for discharging the crimped and folded strips from the machine. These, and other features of the invention are incorporated in a structure disclosed on the accompanying drawings, in which drawings Figure l is a plan View of the machine,

Fig. 2 is a front elevationaljview,

Fig. 3 is a side elevational view, h

Fig. 4 is an enlarged sectional View on plane 4 4, Fig. 2,

Fig. 5 is an enlarged sectional view on plane 14, Fig. 2 showing one position of the pressing and discharging mechanism,

Fig. 6 is a similar sectional view showing other positions of the'presserand discharge mechanism, 7 V

Fig. 7 is a sectional vlewon plane 77,

ig.8 is a plan'vie'w of the presser bar,

' ife;

Specification of Letterslatent. Patented Sept. 21,1920

Application filed March 3, 1920. Serial No 362,944 V v Fig. is a sectional view on plane 9+9, Fig. 2, f I Fig.10 is a'sectional view on plane 10 -10,

If is a sectional view on plane 11 4 11, Fig. 2 and, i

HTED stares rarenrorr clj. I

JOSEPI-I'W. HOODWINQOF CHICAGO, ILLINOIS.

g- 12 S H Sectional view on plane 12 .12, I

Fig. 2. I v

Thesupporting framework for the machine parts comprises the top 'or table part I 1, and the sides 2 and 3. ournaled in the sides is the main drive shaft 4 shown as 'drivenby belt 5 engaging the pulley 6 at one end. At the other end of the shaft is the. "sprocket wheel 7 connected by the chain 8 .with the sprocket wheel 9 at the corresponding end of .the shaft 101which'supports the lower. crimping roll 11, this shaft being .13on the sides 2 and 3. Above the'sha ft '10 ournaled in the vertical extensions 12am the shaft ends of the upper crimping roll I j 14 are journaled in bearing boxes 15 and 16 which are vertically slidable in openings '17 and 18 in the extensions 12 and 13. Extending between and secured to the upper ends-of the extensions12 and 13 is thetop plate 19 which supports the set screws;2O and 21 in register with the openings 17and 18, these set screws bearing against springs I endson the shaft 28 which is journaledin the sides 2 and 3 parallel with the drive 1' v shaft &. Themovement of this feed frame is controlled by cam mechanism whichwill V be described in detail later. "A paperstrip s is laid on the shelf 24 in front of the projecting fingers and when the feed frame is swung toward thecrimping rolls, the strip is fed into the rolls and received by the crimping projections 0V to be carried thereby through the rollers to the othersidethereof,

In order to prevent the crimpedstrips from traveling around with either one of thecrimpingrolls after the crimping operation, I guard wires 29 and 30 are provided for the upper and lower crimping rolls respectively. The wires 29 are suspended from a bar 31 which extends between the sides 2 and 3 be- ,hind the upper crimping roll, the free'ends The wires extend through the circumferen' tial grooves 36 formed in the lower crimping roll, and with these upper and lower guard wires the crimpedstrip has no chance to follow one of the crimping rolls but is extracted therefrom by the guard wires and falls down along the lower guard wires to be deposited on the table 1 behind the crimping rolls.

The shape of the crimped strip when it reaches the table is clearly shOWn in 4, and it is now ready to be pressed transversely to have its folds compactly brought together.

The pressing mechanism and its operation are clearly shown in Figs. 4 to 8. The side walls 2 and 3 are cut out ust above the table 1 to leave the slots 37 and 38 for receiving the bearing ends 39 and 40 of the presser bar 41. Between the bar and its bearing ends are the reduced cylindrical sections 42 and 43 for receiving the slotted upper ends of the arms 44 and 45 extending upwardly from and secured to the shaft 46 which is ournaled in the side walls 2 and 3. By suitable cam mechanism to be described in detail later, these arms are swung to carry the presser bar along the top of the table with its bearing ends 39 and 40 engaging in the slots 37 and 38. A short distance behind the inner ends of the slots 37 and 38 v the table has the abutment step 47 between abutment step 47 and then, as shown in Fig.

5, the: strip is compressed between the bar and the abutment to have its folds com-' pactly brought together into parallelism.

-. Unless provision is made for preventing,

the crimped strips when shifted along the table by the presser bar will tend to buckle and would not be compressed together accurately along the folding lines established by the crimping process. I therefore providea'guard or vertical presser plate 48 which is normally in position to permit disbolts by the nuts 58.

charge of a crimped strip from the crimp ing rolls to the table and which is then brought into parallelism with but a distance away from the table to provide a guide passageway for the crimped strip during its travel toward the abutment step 47. The construction and operation of this plate 48 is best shown in Figs. 4 to 7. The plate along its rear edge is semi-circular and rests on top of'the step 47. Extending from its ends a short distance in front of the center of curvature of the semi-circular edge are the pins 49 and 50 which are engaged by the hooked front ends of the levers .51 and 52 which at their rear ends bear against the table. Each bar has the opening 53 therethrough through which extends aheaded bolt 54, the bolts projecting through the openings 55 through'the table and supporting the compression. springs 56 which abut at their upper ends against the under side of the tableand at their lower ends abut against washers 57 held to the The springs are al ways under compression so that the bolts eX-ert downward pull on the levers 51 and 52, which pull or pressure is conveyed to the pins 49 and50, such pressure tending to swing the guard plate 48 downwardly. EX-

' tendingfrom the plate downwardly through the opening 59 of the table is the arm 60 which at its lower end is pivoted to the bar 61 which is shifted longitudinally by cam mechanism to be described later. Normally, the bar is held to cause the plate 48 to be held upwardly in inclined position as shown in Fig. 4 to permit discharge of crimped strips to the table. The bar 61 and its cam mechanism cooperate with the spring levers 51 and 52 to swing the guard plate downwardly into parallelism with the table shown in Fig. 5, after the crimped strip has been delivered to the table. When the presser bar 41 presses the crimped strip against the abutment 47 the primarily inclined folds of the strip become vertical so that the height of the strip increases. It is, however, desirable that the strip during the transverse pressing or compact folding operation be at all times in engagement with the table and with the plate 48 so as to prevent buckling and improper folding. This is permitted bythe springs 56 whichtend to hold the plate 48 down inposition of engagement with the tops of the strip folds and to yield as the height of the strip is increased during the compact folding operation. The crimped strip during the folding up and compressing operation is therefore always engaged on all four sides and it must necessarily fold accurately along the lines established by the crimping rolls.

I preferably apply heat to the crimping rolls and also to the table section along which the crimped strip travels during the folding and pressing operation, such-heatmg insuring retention .of the shape and form into which the strip is .cr1mped' and pressed. -As shown heating nozzles 62 extend downwardly from a gas supply pipe 63 heat. The grooves also serve to receive the guide tongues 67 and 68 on-the lower and upper sides of the presser bar 41. These tongues accurately guide the bar when trav cling-between the table and the plate 48 and alsoyserve to strengthen the bar andprevent its buckling.

Afterv folding up of the crimped strip under pressure and heat it is ready to be discharged from the machine. The .discharg ing mechanism is best shown-in Figs. 1, 3, 5

and 6. Ejector bars 69 are applied in the grooves and at vtheir rear ends these ejector bars receive the rod 70 which extends through the slotted end of the Y frame-71 which at its lower end is secured tothe shaft 72 extending between the side walls '1 and 2. Cam mechanism to be described later swings this Y lever to cause reciprocation of the ejector bars. Normally the front ends of.

the ejector bars are behind the abutment 47. After the presser bar 41'has been returned after a pressing operation, the ejector bars 1 are shifted forwardlythrough the grooves 65 and carry the finished strips forwardly and deposit them on the delivery apron 73.

The cam mechanisms heretofore referred to are clearly shown in Figs. 2 and 3, and 9 to 12. In Fig. 9'is shown the-cam control for the feedframe27. Extending from this frame is the link 74 whose longitudinal .slot' 7 5. receives the main drive shaft 4 01 which is secured the cam disk 76. This dlsk has the cam groove 77 which extends concentricallyfor about270 degrees and which for the remaining distance has the 'V-shaped path 7 7f deflecting toward the center of the disk. In the cam groove rolls the cam roller 78 pivoted on thelink 74, and. as the cam disk rotates, the cam groovewill coiiperate with the cam roller to periodically swing the f feedframe 27 V I v L 1;

The cam mechanism for 'asslstmg the spring levers 51 and "52 incontrolling the operationof the guard plate 48 is shown in -Fig. 10. The bar 61 connected w th the plate has :the longitudinally extending slot 7 9 near its lower end which receives the driving shaft 4 on which is secured the. cam.

disk 80 which has the concentric cam surface 81 extending through about 120 degrees.

Journaledon the inner'endfof the bar 61 the cam roller 82 which-engageswith the cam. surface. -Theforce of the springs 56 acting through the levers 51 and 52 and the plate 48 hold the cam roller against the cam surfacesof the cam 80. Whenever the roller engages with. the concentric surface 81 the plate .48 will be held in raised position. When the roller travels along the cam surface 88; toward the hub of the, cam the springlevers 51 and 52 will be free to swing the plate 48 downwardly to the table] .In Fig.11 -is shown the cam mechanism for controlling the operation ofthe 'presser bar 41. On the arm 44 which supports one end ofzthe'presser .bar is the cam roller. 84

which engages in the cam groove85 in the disk 86 securedto the main: driveshaft'4. This camv groove :has the outer section 85' concentricl andr'of substantially degrees extent, and has the inner section 85 of sub;

stantiallyHQO degrees extent and also con centric but of less radius thanthat of the section 85?. i -Ther ends/of the sections 85 g and 85 are. joined by thesections 85 and ln'Fig. 12Z-is shown the .cam-mechanism' forcontrolling the operation ofthe ejector bars. {The frame'71 at intermediate parts receives the link 87 whose inner end has the longitudinal slot '88-receiving-the main drive shaft- 4. P At its end the link hasthe cam; rolleri89 which travelsin the elliptical cam groove 90.whose inner section 9,0v isrconcen= tric and extends aboutlSOdegrees. The

cam groove is formed in the disk 91 secured on the shaft 4. 9

Describing. now I the sequence. of -0per'a- 2 tion, let us begin with the posltion'shown in:

Fig. 4. A. crimped strip has just been delivered tothetable andthe cam roller 78:

isin the long concentric groove 77 of cam 76 so that there wlll be no feeding of paper, to

the crimping rollers for some time. cam roller 82, however, is just about to leave the Iconcentric cam-surface 81 to rapidly travel; over the surface 88 and then to the.

concentric cam surface ofthe cam hub (Fig.

10). [The resulting movement of the bar 61.

will permit the spring levers 51-and .52 to swing downthc plate48 to' form the upper;

wallof theguidewayfor the crimped strip- While the cam. roller 82' is in engagement;

with r the concentriccam hub the. guard plate 1 1 ing thistimetthe groove section 85? of the- 48 stays in its horizontal position, and durcam 86 is-effective to swing the arms44cand-y fold up the crimped strip against the abutmentl4'i'.v While the cam groove 85*, which is concentric, is acting on r 45 to shift the presser bar 41, rearwardlyto 3 and press it v,

the cam roller 84, the pres ser ba'r'41 remains; 1 in itsrear position to; hold the papercome, pressed ,while. it is being heated. During;

mp s 9t the st ip. e ,p e e 8, a

80 becomes effective to draw down the bar .62 to raise the plate 48 and the groove section 555 of the cam 86 becomes eifectivg to swing the levers 44 and 45 to cause the presser bar 41 to be shifted outwardly. While the cam roller 84 is in the concentric groove section 85 and the cam roller 82 is engaged by the concentric surface 81 of the cam 80, ejector mechanism comes into operation to eject the finished strip. The cam roller 89 in the cam 91 leaves the concentric groove section 90" andis shifted to swing the frame 71 forwardly so that the ejector bars are shifted forwardly through the grooves and the finished strip is discharged from the table onto the apron 73.

.After ejection of a finished'strip the cam 76 becomes effective to cause rearward swing of the feed frame and the blank paper strip placed on the shelf 24 will befed to the crimping rolls by the fingers 26 and after crimping of the strip it is delivered to the table in position shown in Fig. 4, whereafter the same operations are carried through as above described. If desired, a cam 86 similar to cam 86 may be associated with the arm 45 connected with the presser bar 41. These two cams equalize the pressure exerted by'the bar and the bar will travel smoothly and will not bind. Engagement of the tongues 67 and 68 on the presser bar in the groove of the table and the plate 48 serves another useful purpose. It prevents the thin paper of the strip from entering or being caught between the presser bar and the table or theplate.

I thus produce a very eflicient machine for longitudinally crimping and transversely folding under pressure strips of paper previously transversely perforated so that the finished product can be readily divided into' pellets by breaking at the perforation line. There is no danger anywhere in the machine of the strip becoming caught or torn, and on account of the yielding guard plate 48 which in cooperation with the table always keeps the 'cr'imped strip from displacing vertically, there is no chance for buckling and the crimped strips must be permanently folded along'the lines determined by'the crimping prooess.- Changes and modifica tions are no doubt possible which would still come within thescope of-the invention and I do not therefore desire to be limited to precisely what I have shown and described.-

I claim as follows:

1. In a crimping and folding machine, the combination of a supporting table,

. crimping rolls above said table, means for feeding paper strips to the crimping rolls, said rolls delivering the crimped stripsto :nsss seo said table,- an abutment on said table, a presser bar slidable on said table to press the crimped strips against said abutment to intimately fold them, and means for exertingve'rtical pressure on the strips during folding thereof.

2. In a crimping and folding machine the combination of a supporting table, crimping rolls journaled above said table, means for feeding paper strips to said crimping rolls, the crimped strips being delivered from said rolls to said table, an abutment on said table, a presser bar and means for reciprocating it on said table, said bar engaging with the crimped strip to press it o I 7 0 against said abutment to permanently brlng together the folds thereof, a guard plate removably held above said crimped strip and the path of said presser bar, said guard plate and table confining the crimped strip vertically to prevent buckling thereof during compression thereof by the presser bar, and means for ejecting the finished strip from said table.

3. In a crimping and folding machine, the combination of a supporting table, crimping rolls journaled' above said table for crimping paper strips and delivering them to said table, an abutment on said table, a presser bar and means for forcing said bar toward said abutment to trans versely compress a crimped strip against said abutment, a guard plate, means for normally holding said guard plate raised from said table to permit feed thereto of a crimped strip,- means for lowering said plate into parallelism with said table over a crimped strip after feed to the table of the strip, said plate and. table forming a confining passageway for the strip through which the bar travels to effect compression thereof, and means for discharging a compressed strip from said table.

4. In a crimping and folding machine the combination of a supporting table, upper and lower crimping rolls journaled above said table, means for feeding paper strips to said crimping rolls to be longitudinally crimpe'd; means for guiding crimped strips from said rolls to said table,

' an abutment on said table, a presser bar slidable; on said table toward and away from said abutment, means for controlling the reciprocation of said bar, a removable guard plate abovethe table forming a passageway therewith through which a crimped strip is ,shifted by the presser bar to be eventually compressed between said bar and cable on said table, an abutment on said table, a removable guard .platea distance above and parallel with said table to leave a passageway for a crimped paper strip and-said bar, s'aid'bar eventually compresscrimping rolls to be crimped thereby, means for guiding crimped strips from said rolls to said table, a guard plate normally raised to permit discharge of a crimped strip to the table from the rolls, means for lowering said plate into parallelism with but av short distance above said table to form an upper retaining wall for the crimped strip, an abutment between the table and the end of said plate, a presser bar mounted on said table, means for shifting said bar between said table and plate to engage with and compress the crimped strip against said abutment, and means for discharging the compressed strip from said table.

7. In a crimping and folding machine, the combination of a supporting table, means for discharging a crimped strip to said table, a guard plate over said table forming a passageway therewith for the crimped strip, an abutment at the end of said passageway, a presser bar mounted on said table, means for shifting said bar into said passageway to-fold upsaid crimped strip and press it against said abutment, said guard plate being vertically yieldable during the compression operation, and means for discharging the compressed strip from the plate.

8. In a crimping and folding machine, the combination of a supporting table, crimping rolls for crimping paper strips, means for guiding crimped strips from said rolls to said table, an abutment ridge on said table. a guard plate hinged on said abutment plate and normally raised to permit said table to receive a crimped strip, means for swinging the plate into parallelism with said table to form a passageway therewith, a presser bar guided on said table, means for shifting said pressenbar into said passageway to engage with and to compress the crimped strips against said abutment, said plate beingvertically yieldable to permit increase in height of said crimped strips during compact folding thereof against said abutment, and ejector arms for ejecting a compressed strip from said table.

9. In a crimping and folding machine, the

and'reciprocable across said table, ariabutment at the end of said slots in front ,of'.

whicha crimped strip is depositedf-rom the crimping rolls, said presser bar upon its inward travel engaging with the crimped v strip and compactly folding it together and compressing it transversely against said abutment, and means for exerting vertical pressure on the strips during such transverse compression and folding thereof; 10. In [a crimping and folding machine, the combination of a supportingtable, exten sion walls at the sides of said table, crimp ing rolls journaled in said extension walls above said table, means for feeding said paper strips to saidcrimping rolls, means for guiding a crimped strip from said rolls to 'sai'd table,,a guard .fplatenormally raised over the table where a crimped stripjis -deposited, fmean's for swinging .said plate downwardly into parallelism with anda distance above said table to form a passageway therewith, an abutment at the end of said passageway, guide slots at the bases of said side walls, a presser bar journaled at its ends in said guide slots, means for reciprocating said presser bar, engagement of said presser bar in said passageway causing it to receive and to shift said crimped strip against said abutment, grooves in said table and plate,

and guide tongues on said bar. engaging with. said greoves. I

11. In a crimping and folding machine, the combination of a supporting table, crimping rolls over said tabie for crimping paper strips and delivering them-to saidtable, a guard plate-on said table over the section thereof receiving the crimped strip, a spring hinge for said plate tending to force it downwardly into parallelism with said table over the stripreceived thereon, an

abutment at the hinged end of said plate, a.

presser bar shiftable on said table into and out of the passageway'between said table and plate, bar when entering said passageway shifting said crimped strips toward and against the abutment and pressing it to cause compact folding together thereof, and means for ejecting a finished strip from said table.

12. In a crimping and folding machine, thecombination of crimping rolls for crimping a paper strip, means for transversely compressing and compactly folding together said strips after the crimpingoperation, and

means for confining said strip under vertical pressure during the folding operation.

13. In a machinefor crimping and folding strips, the combination of crimping rolls for crimping the strips, upper and lower guide Walls between which a crimped strip is received, an abutment wall at the ends of said guide Walls, a presser barand means for shifting it between said guide walls to cause compression thereby of the crimped strip against said abutment, one of said guide walls being yieldable to thereby permit increase of thickness of strips during the compact folding thereof.

14:. In a crimping and foldin machine, the combination of a supporting table, crimping rolls over said table for receiving and crimping said paper strips, a guard plate on said table, spring levers tending to swing said guard plate into parallelism with said table, cam mechanism for holding said guard plate in raised position, means for guiding a crimped strip from said rolls to said table below said plate, said cam mechanism and spring levers cooperating to swing said plate into parallelism with the table above said strip, an abutment, a presser bar guided on said table, and cam mechanism for shifting said presser bar along said table below said plate to engage with and to compress and compactly fold said strip against said abutment.

15. In a crimpingaand folding machine,

the combination of a supporting table,

' strip from said rolls to said table, a guard plate hinged on said table and normally held raised above the tableto permit application thereon of a crimped strip, means for swinging said plate downwardly into parallelism with the table above said strip, a presser bar, said table and said plate having guide grooves, guide tongues on said presser bar engaging in said grooves to guide said bar, means for reciprocating said bar toward and away from said strip, inward travel of said bar causing engagement thereof with said strip and compression thereof to compact form, ejector arms slidable in said grooves, and means for shifting said bars to discharge the compressed strip from said table.

In witness whereof I hereunto subscribe my name this 1st day of March, A. D., 1920.

JOSEPH w. Ho'oDwiN.

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