US1716425A

US1716425A - Tube-forming machine

Info

Publication number: US1716425A
Application number: US49150A
Authority: US
Inventors: Conti Eugene
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-08-08
Filing date: 1925-08-08
Publication date: 1929-06-11
Anticipated expiration: 1946-06-11

Description

June 11,1929, com-n 1,7163425 TUBE FORMING MACHINE Filed Aug. ,1925 4 Sheets-Sheet l INlfENTOR. Eugene Con/1.

June 11, 1929. CONT] 1,716,425

TUBE FORMING MACHINE Filed Aug. 8, 1925 4 Sheets-Sheet 2 l N V EN TOR. Eugene Con/1'.

June 11, 1929. CONT]. 1,716,425

TUBE FORMING TiACHINE Filed 1925 4 Sheets-Sheet 3 IN V EN TOR. Eugene Con/1'.

June 11, 1929. I -n I 1,716,425

TUBE FORMING MACHINE Filed Aug. 1925 4 Sheets-Sheet 4 llllll,

INVENTOR. Eugene Gan/1'.

Patented June 11, 1929.

EUGENE CONTI, or JERSEY CITY, NEW .rEEsEY, ASSIGNOR TO ALEX .NEW ROCHELLE, NEW Yo K.

Th s} a ter @EFHCE.

ANDER HERZ, F

TUBE-FORMING MACHINE.

Application filed August The present invention relates to machines for forming paper tubes.

The invention contemplates the provision of mechanism for forming a continuous tube and mechanism for cutting off predetermined lengths thereof while the formed tube is fed continuously forward from the form-v ing mechanism. The speed of operation of machines of this character is usually limited by the speed at which the-cut-ofi' mechanism can be effectively operated without unduly mutilating the tubes at the point of severing and without too great strain upon the cut-off mechanism or other parts 'of the machine. r

The present invention has for an object to provide an improved machine of this character having a cut-off mechanism which willbe effective in use and which may be operated at high speed.

The nature-and objects of the invention will be better. understood from a description of particular illustrative embodiment thereof and for the purpose of such description reference should be had to the accompanying drawings forming. a part hereof and in which:

Fig. 1 is a plan view of the illustrative embodimentof the invention;

Fig. .1 is a detail showing the manner in which the strips of stock are fed to and wound uponthe mandrel, and showing the relation of the strips to the winding tape;

Fig. 2 is a side elevation of the machine;

Fig. 3is an elevation looking. at the opposite side to that shown in Fig.2, and

Figs. 4: and 5 are detail. views of the cutoff mechanism.

This illustrative embodiment of the invention includes a bed 1 5, which is supported by legs 16 and in turn sustains the operating parts of-the machine.

A mandrel,- which is of the, stationary type, round in cross-section is supported in substantially horizontal position, at one end only and is-free at its other end. The support for-this mandrel includes a post 17 rigidly associated with and extending upwardly from the bed 15. This mandrel 18 is mounted in the post for horizontal adjustment and is secured in its various adjusted positions by means such as a set screw. In order that the strips of stock crossheads 21 and 22 ad 8, 1925. Serial No. 49,150.

may be wound upon the'stationary mandrel to form a round tube, I have provided a bolster 20, which extends traversely of the bed in a predetermined relation to the mandrel, and beneath the same. Cross heads 21 and 22 extend upwardly from the ends of the bolster 20, and support horizontally disposed

pulleys

23 and 24, which are rigid with vertically downwardly extending shafts 25 and 26, having bearings in the cross heads and having rigid with their lower ends beveled gears 27 and 28, which 5 mesh with similar gears 29 on a shaft 30. The shaft. 30 extends longitudinally of the bolsterand is supported by a bearing 31, being actuated be described. 1 7 A winding tape passes around the

pulleys

23 and 24 with the reaches of the tape crossed between the pulleys. One reach 32 extends directly from one pulley to the other, while the other reach 33 is wrapped about the mandrel several times so as to provide means 'for engaging and forming the strips of stock into the continuous tube. Tensioning rollers 34 are mounted on the the reach 32 of.,the-windin tape. The disn position of the bolster with relation to the mandrel is such that the turns of the reach 33 about themandrel will, in the formation of the tube, of the strips of stock and the proper feeding of the tube of the diameter being made.-

The

pulleys

23 and 24 are actuated to draw the winding tape around the stationary mandrel by the shaft 30, which receives its motion through the intermeshing of

beveled gears

35 and 36, the latter being onthe shaft30 and the former-rigid with a gear 37 which meshes with a similar but smaller gear 38 rigid with a shaft 39 extending through the bolster and having a bearing in I the bed 15. The speed of the shaft 30 and consequently the speed of rotation of the

pulleys

23 and 24 may be varied by changing the ratio of the gears actuating the same.

For instance the

gears

37 and 38 are SQ mounted that they may be removed and replaced b other gears tochange the ratio be-' .tween t e same. Thus e speed of the windingtape may be varie to accommodate it to the difl'erent conditions of the'tube bein a manner which will later justably and engage 0 I result in the proper overlapping ing formed. That is to say the slipping of the tape may be overcome and the rate of the tube will be varied. A beveled gear 40 is rigid therewith, and a p is rigid with the lower end of this shaft 39 andv meshes with a similar gear 41 on a shaft 42 which is supported in bearings 42', depending from the bed 15 of the machine. This shaft 42 extends longitudinally beneath the bed 15 so that it will be most conven-- iently located not only for the actuation of the

winding tape pulleys

23 and 24, but also for the other units of the machine, as will later appear, This shaft .42 is actuated by the intermeshing of a beveled gear 43, which inion 44 on a transverse pulley shaft 45. The shaft 45 is actuated by a belt which passes around thepulley 46 on the end thereof and around the pulley on the commutator shaft of a motor 47, the motor being supported by a suitable frame extendingbetween the legs 16.

Means is provided for feeding strips of stock, such as paper, to the mandrel in proper angular relation thereto, under tension and'supplied with the desired adhesive to 'causethe strips to adhere to each other and with a lubricant to reduce the friction between the mandrel and the strips as they are wound into a tube and fed from the mandrel in the form of a tube. This means includes mechanism for applying a lubricant to one of the strips, that is, the one which comes into direct contact with the mandrel, and includes also a mechanism for applying adhesive to the other strip so that when it is, wound upon the previously wound lubricanfiv carrying strip it will adhere to the outer face thereof, and result in the formation of port rolls 52 of strip stock, so .that .a pair of rolls will be disposed above the bed 15 and, if desired, a pair of rolls may be disposed below the bed 15. By this arrangement, the minimum time will be-consumed in threadingnew strips of stock. to the mandrel after the strips from onepair of supply. rolls; are consumed. For instance, presuming that"the'strip stock is being fed from tensioning device.

strips as they pass to the mandrel and areon

suitable supports

53 and 54, above the v bed of the machine, and are arranged in suitable angular relationship to the mandrel to v respectively accommodate the strips 55 v and 56, which pass from the supply rolls be-.

neath a guide roller 57. Each of these channeled guides is provided with a suitable These devices tension the wound into the form of a tube. The strip 55 which passes through the guide 53 is suitably gummed by means of an adhesive applying roll 61. Fig. 2 mounted'in an adhesive supply reservoir 63 supported on a standard 64 extendinglupwardly from the bed of the machine and independent of the bolster 20. The rotation of the roll 61 is accomplished by means of beveled gears 65 and 66, Fig. 1, the fornier being rigid with the shaft 62 and the latter with a vertical 9 0- I shaft 67, Fig. 2, which is actuated by inter- 'meshing beveled gears 68 and 69, the gear 69 beingrigid with the longitudinally disposed shaft '42.

The amount of adhesive carried by the roll 61 to the strip 55 as the latter passes over the roll is controlled by a roller 70 and is itself rotated byintermeshing gears 72' ion roll 61 by a spring 74, and against adjustable abutments 75 by means of which the space between the roller 70 and the adhesive applying roll 61 is controlled to thereby con trol the amount of adhesive applied to the strip 55 as it passes over the roll 61. The other strip 56 passes directly from the channeled'guide 54 to the mandrel and forms the base of the tube on which the adhesive coated strip 56 is wound. In order that the face of the strip 55 which contacts with the stationary mandrel may be lubricated to reduce the friction between the mandrel and.

the tube as the latter is formed and fed along the mandrel, I have enlarged the end of the mandrel as at'76, Fig. 1, and extendedfrom this enlarged'end a lubricator 77, which is arranged in the pathof travel of the strip 55 and has an upwardly facing opening 78 therein from which a lubricant such as oil flows to contact with the under surface of the strip. This lubricator 77 is supplied with a'lubricant froma reservoir end.

Thus the strip 55 is lubricated before it reaches the'mandrel and consequently the friction between the mandrel and the strip tance:

is reduced to a minimum, and the strip 56 is on its under surface coated with adhesive sothat when it is'wound on the previously woundstrip 55 it will adhere thereto and form a rigid tube.

In order that the tube as it is continuously formed and fed from the mandrel 18 maybe cut into predetermined lengths,

without interrupting the continuous movement of the tube,'and without distorting'it,

I have provided means for severing the tube which means operates veryquickly whilethe tube is moving'forward an a preciable dis- The embodiment of this means illustrated in the drawing includes a cutter which operates in a path transverse to the speed of the knife-85 as it traverses the tube is sufiicient to cause it to pass entirely through the tube without causing distortion or buckling of the tube as it is fed forward by the forming and feeding means. The knife 85 is of light weight so that when carried by the fly wheel 86 the knife and Wheel as a whole are substantially balanced about the center of rotation of the wheel whether or not a separate balancing weight is provided on the wheel rim opposite the point of attachment of the knife. Asshown, the tube is formed to feed through the guide sleeve 90 into the path of the knife 85.

Summarizing the operation of the machine, the

strips

55 and 56 of the stock are fed to the stationary mandrel 18, the former supplied on its under face, that is, the facewhich contacts with the mandrel, with oil and the latter supplied on its under face, which engages the previously wrapped strip 55, with adhesive. The assage of these strips between the turns 0 the winding tape and the mandrel Winds them into a continuous tube, and feeds the tube longitudinally ot the mandrel to the cut off mechanism, the cutting blade 85 of which latter mechanism traverses the path of movement of thetube in afixed path and cuts the tube into predetermined lengths. These cutoff portions-are guided by the delivery mechanism tov a suitable receptacle or mechanism .for subsequentlyoperating on the tubes The description of the illustrative embodiment is illustrative merely and is not intended as defining the limits of the invention.

What 1 clalm 1s: 1. In a tube forming machine, in comb1nation, a mandrel, means for forming a substantiallyrigid tube on said mandrel and for feeding the formed tube from the mandrel at a relatively low rate of speed, and means for severing the formed tube into predetermined lengths comprising a cutting member moving at constant speed in a fixed plane in a path which traverses the path of the tube, the distance moved by said cutting member between successive traverses being greatly in excess of the distance moved bysaid tube, whereby saidtube may be severed without causing distortion or buckling.

2. Ina tube forming machine, in cpmbination, a-mandrel, means for helically winding strips of material about said mandrel to form a substantially rigid round tube and for continuously feeding the formed tube from said mandrel, and means for, severing the formed tube into predetermined lengths comprising a cutting member moving at constant'speed in a fixed plane in a path which traverses the path of the tube, the distance moved by said cutting member between successive traverses being greatly in excess of the distance moved by said tube, whereby said tube may be severed without causing distortion or buckling.v

3. In a tube forming machine, in combinati'on, a mandrel, means for forming a substantially rigid tube on said mandrel and for feeding the formed tube from the mandrel at'a relativel low rate of speed, means for severing the ormed tube into predetermined lengths comprising a rotary cutting blade adapted to traverse the path of movement of the tube and mounted on an axis removed from the axis of the tube a substantial distance, andmeans for driving said blade at a speed greatly in excess of the speed of movement of said tube, whereby the latter may be severed without distortion or buckling.

4. In a tube forming machine, in combination, a mandrel, means for helically winding strips of material about said mandrel to form a substantially rigid round tube and for continuously feeding the formed tube from said mandrel, and means for sevmay be severed without distortion or. buckw ling.

5. In a tube forming machine, in combination, a mandrel, means for forming a substantially rigid tube on said mandrel and for feeding the formed tube from the mandrel at a relativel low rate of speed, means for severing the ormed tube intopredeterment of the tube and mounted on an axis 1 for driving said blade at a speed greatly in lying in a common vertical plane with the axis of the tube and removed from the axis of the tube a substantial distance, and means excess of the speed of said tube, whereby the latter may be severed Without distortion or buckling.

, 6. In a tube forming machine, in combination, a mandrel, means for forming a substantially rigid tube on said mandrel and for feeding the formed tube from the mandrel at a relatively low rate of speed, means for severing the formed tube into predetermined lengths comprising a wheel having a relatively large radius mounted to rotate wi Lh its periphery closely adjacent said tube, a cutting blade mounted on said wheel and projecting outwardly therefrom to traverse the path of movement of said tube, and means for driving said wheel at a speed such that the speed of said blade will be greatly in excess of the speed of said tube, whereby the latter may be severed without distortion or buckling.

7 In a tube forming machine, in combination, a mandrel, means for helically winding strips of material about said mandrel to wardly therefrom to traverse the path of movement of said tube, and means for driving said wheel at a speed such that the speed of said blade will be greatly in excess of the r speed of movement of said tube, whereby the latter may be severed without distortion or buckling."

In testimony whereof, I have signed my name to this specification this 6th day of August, 1925.

EUGENE court