US1920881A

US1920881A - Manufacture of tubes from paper, cardboard and the like materials

Info

Publication number: US1920881A
Application number: US569050A
Authority: US
Inventors: Paton George Calvert; Paton James Stanley
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-12-16
Filing date: 1931-10-15
Publication date: 1933-08-01
Anticipated expiration: 1950-08-01

Description

Aug. 1, 1933.

G. C. PATON ET AL MANUFACTURE 0F TUBES FROM PAPER, CARDBOARD, AND THE LIKE MATERIALS Filed Oct. 15. 1931 3 Sheets-Sheet 1 Aug. l, 1933. 4 G. c. PAToN r Al. 1,920,881

MANUFACTURE OF TUBES FROM PAPER, CARDBOARD, AND THE LIKE MATERIALS Filed Oct. l5, 1951 3 Sheets-Sheet 2 Aug. l, v1933. G. c. PATON Er A1.

MANUFACTURE OF TUBES FROM PAPER, CARDBOARIA), AND THE LIKE MATERIALS Patented Aug. 1 1933 PATENT oFFIcE MAN UFACTURE OF TUBES FROM PAPER,

CARDEOARD AND THE LIKE MATEREALS George Calvert Paton and .lames Stanley Paton, Liverpool, England, assignors to .lames Stanley Paton, Liverpool, England Application October 15,

1931, serai No.v 569,050,

Y and in Great Britain December 16, 1930 4 Claims.

The present invention relates to an apparatus or the manufacture of tubes from cardboard,

paper or the like material.

In the making of containers by way of eX- ample, of cardboard or the like material, it has Vbeen usual to form a long tube and to cut up this tube into short sections by a hand operated machine.

According to the present invention lengths of cardboard or the like tube are cut up into short sections automaticallyY upon a machine.

The tubes are automatically fed one at a time in timed sequence to a cradle by which they are fed upon a revolving mandrel. When the said tube is in position upon the mandrel cutting tools, such as rotary disc knives are automatically brought into engagement with the tube at a number 'of set distances along it. Means are `subsequently put into operation for auto- 20 matically stripping the severed lengths of tube from the mandrel.

The invention is more particularly described with reference to the accompanying drawings in Whichz Y Figure 1 is a side elevation of one form ofcoustruction ofthe machine.

. Figure 2 is/a'corresponding plan view.

Figure 3 is an end elevation.

yFigure 4 is a diagrammatic view of the cam path controlling the crosshead in its forward and backward travel and causing a dwell at each end of the forward and backward positions.v

Figure 5 is a diagrammatic end view of a modification while Figure 6 is a detail.

The frame consists of a `bed plate l and

vertical brackets

2, 3, 4 andV 5. .The

brackets

3, 4

and 5 are interconnected by the crosshead guides 6 and 7. The mandrel 8 extends from the main driven shaft 9 which rotates in suitable bearings in the vertical brackets 2 vand 3 of the frame, and also a further bearing 10 having a projection 11 is rotatably mounted inthe rear crosshead bracket 12 to engage the recess 13 in the Vend of the 'mandrel 8 during the operation of severing the tubes.

A drum 14 carrying a cam track l15 is secured to the shaft 16 which is rotatably mounted in bearings in the

parts

2, 3 and 4 of the frame and is driven from the main shaft 9 through two `sets of

toothed wheels

17, 18,19 and r20. I The pinion 17 on the main shaft 9 engaging the toothed wheel 18, secured to the counter shaft 21, which is rotatably mounted in the

parts

2 and 3 of the frame. The cam track 15 takes the form oi a channel section the Verticalwalls of which engage a roller 22 mounted on the underside of the crosshead bracket 38 forming part of the rcarriage or cradle. It will be understood that normally only one of the said vertical walls engage'theroller 22 during the traversing operation. 'A set of pivotal'levers 23 are interconnectedat their lower ends by toothed segments 24 so that when the roller 22 is travelling in the direction of the arrow 25 the roller 22 engages the ends of the rst pair of pivotal levers 23 to open these to form a guiding wall, whereupon Ythe other pair of pivotal levers rotate towards themto completely close the gap from the reverse track as indicated by chain dotted lines in Figure 4 of the drawings.

` The diagonally arranged

portions

15a and 15d ofV the cam track 15 eiTect the traversing action of the carriage or cradle 26 while the circumferential portions 15b and 15e at the ends of the -drum 14 cause the carriage or cradle 2'6 to rest or dwell for a predetermined period of time. During the rest' period at the end 15b of the cam track 15, rotary cutting knives 27 which are adjustably mounted on the bracket 28 secured to the shaft 29 are moved into engagement withV the long length of tube revolving Withthe mandrel 8 to cut this tube into short lengths by engagement of the lever 30 through its roller 31 Awith the cam wheel 32. The cam wheel 32 is securedV to the shaft 33 to Which is also secured 'the toothed wheel 34 engaging the pinion wheel 435 on the drum shaft 16 so that these parts are synchronized. v.The rotary knives 27 are returned to the inoperative position by the spring 36 attached to the frame.

The resultant severed short pieces of tube are stripped ofi` by the projection 37 of the crosshead bracket 38.

The crosshead brackets 12 and 38 are interconnected by stay bolts 39 Yto form a cradle or carriage 26 for the reception of the long length of tubefrom the chute or guide 40. The chute 40 is fed from any suitable conveyor (not shown) and has stops 41 in the form of upstanding 1evers secured to spindles 42 rotatably mounted on the guideway or chute 40 with a further set of stops 43 secured in spaced relationship with the stops 41 to the spindles 42 and substantially at 90, so that when the stops 41 are rotated through 90"` to release a length of tube from the guideway 46 the second pair of stops 43 project upwards to prevent more than one tube being released to enter the cradle 26. Therefore it will be understood that the interval between the pairs Vso of stops 4l and 43 is slightly greater than the diameter of a tube so that the second pair of stops'43 rocks up to temporarily hold the tubes in the guideway 40V behind the one which is being delivered into the cradle 26.

The stops 41 are l'normally vertical due to the action of the spring 44 secured at oney end to the

parts

4 and 5 of the frame.

tube by' a projection 46 onlthe c rosshead bracket 12 which engages a projection 47..'whenA the cradle or carriage is travelling to the charging or starting position. i v

The' cradle or carriage 26 consists of two cross,-V head brackets 12 and 38 interconnected by stay bolts 39 (as previously stated) which brackets 12 and 38 slidably engage the guide portions 6V and 7 of the frame.. The leading crosshead bracket 38 has a roller 22 mounted 'below to engage the campatli l'onthcdrum 1,4 to cause the cradle or Carriage 26. to.v bvetraversed forward and backward. The tube. when released. from the chute or hopper 40.- drops upon two pivotal radial sections 48 whiphholds, this t o ac t as a guide together with'th e xed radial portion 49 arranged at the lower'end of the chute 4Q thus serving to support, and. guido the. cardboard or :the like tube.A until it. transicrred. to the mandreL, Immediatelyafter the tube has been re..- oeived in the., cradle 2 6 the, roller 2.2. engaging the cam track 1.5. leaves the circumferential portion 1.51:. oi thetrack and is. displaced. longitudinally oi. the. machine by the diagonally arranged guido i511., on. they d rurn to transicrrthe tulooirom. the cradle or carriage 2 6: to the mandrel8. bythe aidof aguide, or abutment. 10a arranged on the rear crosshcad bracket. 1.2,v the portion 11 of this abutment. serving as. a. bearing for the` mandrel .8, during the. cutting operation...

. The guide-.ory abutment. 10o. rotates in ball .bearing so, that the, cardboard or Athe like, tube free tarotate-withthe mandrel 8 during the operation cf p ushiiigthe tube ori-,to tho. mandrel.

The. front; bracket; 38, of.. theoradlc, 26.11% mounted upon it o Slidablc. portion 38d Whihst the endcf; itsforwardtravel engasostho adjustablv fixed, Stop .5.4 on. the ,parti 4,: of.A the frame, Vwhich is causedto movev out o f its normal vrelationship with the bracketv. behgnorrnally ,heldby a. spring` 38D. soL thatwhile the( tube is free. to. drop between the front. andrearmcrosshead. brackets 3.8andi 12 rspectiyelythe, ar-

rangement just. described closes the,y gall. between the stops. thereby ensuring that the, tube with its printed labclsisain, thefw correctrelationship4 with; the rotary, cutting. knives, 2,7, to, sever these tubes and alsof toA trim` very.y short lengths of tubejfrom the ends of long tube.Y

. The cutting operation: is eiected duringA the rest; period of.; theL Cradle, or Carriaee; at, the ioizvrardcnd oi its stroke; and; immodiately, after the outtinsisnives 2.7' have bocn.- rocked into the inoperative position.- the. Stripping operation iS ,effectodby .ensascmcntot the portion 37 of the i Slsigble .PQYPOQ 38d 0f the bracket, 33- .With .the tubdwhsn. the.; .Corriges stravllirls; Qn.- its .return SfOkei,

DuringA the forward in ovrementrofv the cradle or carriage 26 the. radial, portions 48, which' are pivotally, mounted, are 'rotated through an` arc equal to*4 about 90 by aj'projection V50attheir lower ends engaging a. iixedvstop` 5l on', the. part 4 of the frame sothat duringv the'. return of 'the carriageor cradle 26 to causethe strippingk the Y radial'portionsh48 do not impede the delivery The stops are. rotated through to release a long length of' of the short length of tube after' leaving the mandrel 8. The radial guides 48 are returned to their operative position just before the carriage or cradle 26 reaches the charging position by the engagement of another projection 52 with another fixed stop 53 on the frame.

rhemode of operation is as follows:-

The chute or guide 40 is filled with tubes from a suitable conveyor means and the machine which includes ,the mandrel 8, the drum 14 carrying the cam track 15 for the traversing action and the cam wheel 32 for the cutting operation, is set in motion, all movements being Synchronized.

It will be assumed that a tube has been fed into the cradle 28 during one of the dwell periods of the traversing members corresponding to.rv the kposition shown in Figures 1 and 2 of the drawings, whereupon the roller 22 mounted in the underside of the bracket 3,8 is transferred from the circumferential ijioltion` of the cam track 15e to the diagonal. hQlton 15a to cause the cradle or carriage 26 to moveV forward to 131.8%13116 tuheupon the mandrel` 8 by engagement ofthe, guiding portion 10a on, the crosshead bracket 1 2, with one end of thetube. The stripping ring or collar 37 travels in front of the tube upon the mandrel 8 untill the slidaloley portion 38a of the, crosshead bracket 38 engages the stop54 onu the part 3 of, the frame allowing the gapj between the stripping projection or ring 37 to be, closed up. By this time the

roller

2,2 has been transferred from the diagonally arranged camL track 15a to the circumferential:

portion 15b of the camtrack 15 to calle the 110 necessaryI dwell.A During the'forward travel the radial guides are rockedthrough 9C)VD ready for tliiereturmjourney. The rotary knives 2'7`which arc, timedfor the arrival` of thev tube are rocked forward to sever the tube intothe desired short lengthsby thelroller 3l on' the lever 3Q engaging lth e ,c am Wheel 32 the spring 38retu1ning the knives 27 to their rest position immediately afterwards, The

roller

2,2 istransferred from the circumferential portion 15b of the cam track l5 to thel reversediagonal pt )rtionv 15d tocarry the cradle or carriage 26., and consequentlyY the stripping bracket 37,l b ackwardly to deliver the short tubes intoareceptacle orchute., The p rojection 4'7v onthe lower part ot the` stops, 41- engagea projection 4 6.Y to cause a long length of tube to be fed o n totheradialguides 48 which have also been returned to theirl normalposition on the return journey by therprojection 52 i engaging the stopr 53 Whereuponthe cycle of operationis, repeated automatically.

In ain'odillcation. ofj thel invention a pair of man( i,ryels 60,4 61, areA employedvbeingv operated from, one source and employing. only., one.- 6,2toY effect-the traversing ofthe cradles or carriages 63 asilliistrated,diagrammatically. in Fig*- ure,5 of the; drawings.;

We declare that' what We claim isz-f l. A machine for cutting up lengths of card-- board or like tube into relatively short sections comprisinga rotatable`- mandreha cradle adaptedtoA receive lengths of tube onev at. a time, a rotatable drum having a. cam track formed therein,v an actuating member extending fromv said cradle andengaging in, saidy cam track to causedisplacement of thecradle longitudinally ofE ,the mandrel for delivering and withdrawing tubes. tol-and; from the mandrel, a pluralityof knives movable towards .and away from the man-- drel and means for automatically displacing said knives towards the mandrel to out the tube into sections whilst rotating with the mandrel.

2. A machine for cutting up lengths of cardboard or like tube into relatively short sections comprising a rotatable mandrel, a cradle adapted to receive lengths of tube one at a time, a rotatable drum having a cam track formed therein, a roller supported from said cradle and engaging in said cam track to cause displacement of the cradle longitudinally of the mandrel for delivering and withdrawing tubes toand from the mandrel, a plurality of knives movable towards and away from the mandrel and means for automatically displacing said knives towards the mandrel to cut the tube into sections whilst rotating with the mandrel.

3. A machine for cutting up lengths of cardboard or like tube into relatively short sections comprising a rotatable mandrel, a cradle adapted to receive lengths of tube one at a time, a rotatable drum having a cam track formed therein, an actuating member extending from said cradle and engaging in said cam track to cause displacement of the cradle longitudinally of the mandrel for delivering and withdrawing tubes to and from the mandrel, said cam track comprising circumferential portions one at each end of the drum adapted to cause the cradle to dwell for a predetermined period of time at each end of its stroke and inclined portions connecting diagonally opposite ends of Said circumferential portions adapted to cause traversing of the cradle, a plurality of knives movable towards and away from the mandrel and means for automatically displacing said knives towards the mandrel to cut the tube into sections whilst rotating with the mandrel.

4. A machine for cutting up lengths of cardboard or like tube into relatively short sections comprising a rotatable mandrel, a cradle adapted to receive lengths of tube one at a time, a rotatable drum having a cam track formed therein, an actuating member extending from said cradle and engaging in said cam track to cause displacement of the cradle longitudinally of the mandrel for delivering and withdrawing tubes to and from the mandrel, said cam track comprising circumferential portions one at each end of the drum adapted to cause the cradle to dwell for a predetermined period of time at each end of its stroke and inclined portions connecting diagonally opposite ends of said circumferential portions adapted to cause traversing of the cradle, pairs of gate members at the junction of said inclined cam track portions adapted to be simultaneously displaced by engagement therewith of said actuating member from a position in line with one track portion to a position in line with the other track portion,. a plurality of knives movable towards and away from the mandrel and means for automatically displacing said knives towards the mandrel to cut the tube Vinto sections whilst rotating with the mandrel.

GEORGE CALVERT PATON.

JAMES STANLEY PATON.