US1453864A - Tubing machine - Google Patents

Description

May 1, 1923.

A. c. oT Y TUBING-MACHINE Filed Au 20, s sheets-sheet 2 Patented May 1, 19 23 ALFRED C. CO'IY, OF TOLEDO, OHIO, ASSIGNOR TO THE WATERTOWN BAG MACHINE (10., INC., 015 TOLEDO, OHIO, A CORPORATION OF NEW YORK.

TUBING- MACHINE.

Application filcd August 20, 1921.

To all whom it may concern Be it known that I, ALFRED C. Corr, a citizen of the United States, and a resident of the city of Toledo, in the county of Lucas and State of Ohio, have invented an 1111- provement in Tubing Machines, of which the following is a specification.

This invention relates to apparatus for making articles such as bags and the like from paper or similar material.

The object of the invention is to make provision whereby adhesive may be removed from certain points of the blank to which it has been applied previous to certain subsequent operations.

The invention is conceived toibe more particularly useful in connection with, but not limited to, apparatus for forming from a continuous sheet of paper, tubular lengths as in the manufacture of paper bags and the invention will be described with relation to such application of the principles thereof. Other applications of the principles of the invention will be obvious or will occur to those skilled in the art.

In the drawings forming a part hereof,

Figure 1 is a side elevation of a paper bag making machine, embodying the invention.

Fig. 2 is an elevation of the tongue-cutting apparatus of the machine, showing a paste-spreading device, constructed and arranged in accordance with the principles of the invention.

Fig. 3 is a sectional view taken on the line 33 of Fig. 2.

Fig. 4 is a ting knife head.

Fig. 5 is a detail view of the slot-roll or slot-bar with which the knife head cooper ates.

Fig. 6 is a section of the knife head taken on the line 66, Fig. 4.

Fig. 7 is a section of the slot-roll taken on the line 7-7, Fig. 5.

The machine shown for the purposes of illustrating the invention is a machine for making paper bags.

I shall first briefly describe the machine in general, indicating the' several mechanisms and the work accomplished by each.

I shall thereafter describe the device for spreading the paste, with which device this invention is more particularly concerned.

A sheet of paper is supplied to the machine from a suitably 'mounted roll '11.

detail view of the tongue-cut Serial No. 493,871.

Paste is applied adjacent one edge by 2. laterally adjustable disc 12, which paste serves to secure the sheet in the form of a. tube, when later it is folded to such form by the tube-forming apparatus. A tongue-cutting mechanism 13 operates to cut tongues at substantially the center of the sheet at intervals corresponding to the length of the bag blanks. The sheet is then'folded about the former 14 so as to bring it into tubular shape. The tube so formed then passes between the feed rolls 15, 16, which draw the sheet from the roll 11 and along the path described. -From the feed rolls, the tube passes to the cut-off mechanism 17, which severs it into lengths suitable for bags of the size'to be formed. The position of the cut-off suitably correspondsto'the position of the tongue formed by the cutting mechanism 13. The bag blanks thus formed pass between suitable conveyor rolls 18 and crimping rolls 19 to the opening rolls 20, 21, which open one end of the tubular blank and make the first folds necessary for forming the bottom. The partially folded blank then passes downward between the coacher roll 22 and the lower feed roll 21 to the pressing and pasting rolls 25, '26, which press the folds previously formed and suitably apply paste to the bottom preparatory to the final folding and securing. The blank then passes on to the creasing rolls 27. 28 which crease and partially fold the end flaps'of the bottom. These flaps are then folded into overlapped relation by means of a folding mechanism not shown.

In machines such as that illustrated, in which paste is applied to a sheet in a con tinuous line and the sheet is thereafter severed into lengths by a cut transverse to the line of paste, while the paste is still wet, considerable difliculty is experienced. The paste runs over the edge of the paper at the point of severance and gets onto various parts of the machine. Also the paste gets etween the articles made and causes successive' articles, as the paste dries, to adhere to each other in a way which causes extra work to separate them and causes blemishes in the appearance of the articles.

The present invention makes provision for avoiding the presence of excess paste at the point of severance. In the apparatus illustrated his is accomplished by providing means or removing thepaste f om the might -be stationary, if desired, without departing from the invention; These elements are arranged to be pressed firmly together at predetermined points on the line of paste applied by the paste disc 12. They are preferably faced with leather or other yieldable material as indicated at 35, 36 in Fig. 3.

The pressing members and the means for bringing the same together with suitable pressure may be applied at any convenient point of the machine. As shown, they are .carried by the shafts which-carry the knife and slot-bar of the tongue-cutting mechanism, andthe rotation of the shafts serves conveniently to afford. the

desired movement.

The tongue-cutting mechanism comprises parallel horizontal shafts 37, 38, one" above and one below the path of the paper, which shafts are driven in synchronism with each other and with the other mechanism of the machine.' Asshown, both shafts are driven by beveled gearing from a vertical shaft 39,

which in turn is operatively connected with a cross shaft 40 which derives its power 1 from the shaft 41 extending longitudinally of the machine. The upper shaft carries two arms 42, 42 held in adjusted position by set screws 43, 43, at the ends of which arms is mounted a head; 44 bearing a plurality of knives 45, 45 of different lengths longitudinal of the head, curved at their ends, for cutting tongues of different widths in the sheet. In use, the head is adjusted to bring the desired knife to cutting position' and the nuts on the stud bolts are tightened to hold the head in adjusted position by friction. The lower shaft 38 similarly carries two arms 46, 46 heldin adjusted position by set screws 47, 47 in the ends of which arms is mounted a cooperating slot-bar or slot-roll 48, so designed that each tongue-cutting knife will in use project into a suitably shaped slot. The slotroll is adjustable to bring the desired slot intooperative position in substantially, the

' pasted side and which constitutes an abutsame manner as the knife-carrying head.

When bags of different lengths are being made, the paper sheet is passed through the machine at speeds which diifer relative. to

the speed of the drive of the tonguecutting mechanism; It is desirable to make provision whereby the movement of the knife and slot-roll will be the same as the speed of the paper. This is accomplished in the machine shown, by making the shafts'37 and 38adjustable toward and from each other and by making the arms 42 and 46 adjustable in the shafts to vary the effective radii.

As shown, the shafts are carried by journals 50, 50, which are,slidable in ways 011 opposite sides of the machine. These journals are movable vertically by means of right and left threaded'screw shafts 51, 51 engagin therein, said shafts being driven by beve ed gears from a cross-shaft 52 having a square end for manual adjustment.

It is desirable to provide anadjustment to vary the relative positions of the out made by thecut-off knife and the cut made by the tongue-knife, in order that when bags of different lengths are made, the two cuts maybe correctly positioned. This is accomplished by. means of an adjustable shaft coupling 49 (Fig. 1), connecting two parts of the shaft 41. The drive may thus be adjusted to make the distance between the cut-offend of the tube and the cut made by thetongue-knife'always a'multiple of I the required .bag length.

The presser members '33, 34 are carried on the shafts 37, 38, in such manner that they'may be adjusted teem-respond to the adjustments of the knife-head andslotr roll. As shown, collars' 54, 55 are adjust-- ably secured to the, shafts 37, 38, by set screws 56, 57. The presser elements are carried thereon by arms of adjustable length,

such as theslotted arrangement illustrated ing devices have no wiping or sliding inovement relative to the paper, but merely press thereagainst. This action spreads the paste from the line of the severing cut in such manner that there is not enough paste left to interfere with the effective operation of the machine or to cause bags or other articles made to stick-together. as the result of paste being pressed out at the ends.

This described arrangement is illustrative and not essential. As shown, the member 34 which engages the paper on the uncuttingmechanism circumferentially for bags of different lengths simultaneously adjusts the paste-spreading device to time the same properly for operating at substantially the point of severing of the bag lengths. The radial length of the arms is then easily adjusted, if necessary. It will be understood that the point at which the pasted part of the tube is cut by the cut-off knife corresponds in position substantially to the the combination with means for supplying paste to a sheet of paper along a predetermined line, and means for severing the sheet into lengths by a cut transverse to such line, ofmeans for moving the paste away from the line of the cut.

3. In apparatus of the character described. the combination with'means for supp-lying paste to a sheet of paper along a predeter-- mined line, and means for severing the sheet into lengths by a cut transverse to such line, of means for reading the paste away from the line of t e cut, comprising opposed pressing members on opposite sides of the paper and means to bring them together intermittently to press the paste against the paper at predetermined points.

.4. In tube-forming apparatus, the combination with means for applying paste to paperof a presser member and means for moving the member intermittently against the paper at predetermined points to remove excess of paste from such points.

5. In apparatus of the character described,

the combination with means for applying paste to a strip of paper along a line extending longitudinally of the strip and a tongue-cutting mechanism for cutting tongues at predetermined oints in said strip, of means associated with the tonguecutting mechanism for pressing the paper atpredetermined points along the line of paste to remove excess paste from the line at such points. A

6. In tube forming a paratus, the combination-with means for fieeding a continuous sheet of paper and forming the same into a tube, means for applying a line of paste to said sheet as itis fed through the apparatus, and a tongue-cutting mechanism comprising a pair of transverse synchronously driven shafts with tongue-cutting devices carried thereby, of arms secured to said shafts and pressing elements carried by said arms in position to cooperate upon rotation of the shafts to press the paper therebetween. 7. In tube forming apparatus, in combi nation means for feeding a continuous sheet of paper and forming the same intoa tube.

means for applying paste to the sheet along a predetermined line, a transverse shaft adjustable toward and from the path of the paper, a tongue cutting knife carried thereby adjustable radially toward and from the shaft and a presser member carried by said shaft in position to engage the paper on the line of paste and adjustable radially toward and from the shaft.

8. In tube forming apparatus, in combination means for feeding a continuous sheet of paper and forming the same into a tube, means for applying paste to the sheet along a predetermined line, a pair of transverse shafts connected to rotate in synchronism on opposite sides of the sheet, a knife and a slot-bar carried by said shafts and radially adjustable relative thereto, said shafts being adjustable toward and'from each otherto bring the knife and slot-bar into coopera-,

tive relation, and a pair of radially adjustable presser members carried by said shafts in position to engage the paper along the line of paste.

. 9. In apparatus ofthe character described,

the combination with means for feeding continuously a strip of'paper and means for applying thereto a contlnuous line of paste, of means forspreading the paste from predetermined points, comprising a pressing member, means for moving said pressing member in the direction of the feed of the strip and simultaneously into contact with the strip,at the predetermined points and an abutment cooperating with the pressing member and between which and the pressing member the strip is pressed.

10. The combination of means for forming a continuous tube from a sheet, means for applying paste to the edges of the sheet, means for severing the tube transt'ersely at a desired point, and means for preventing an excess of paste at the point of severance.

11. In a tube-forming apparatus, a tongue-cutting mechanism, means for adjusting it to cut tongues at diflerent spacings upon the tube, a paste spreading mechanism and means-for adjusting it simulta neously with the tongue-cutting mechanism -to remove excess paste at desired positions on the tube.

In testimony whereof, I have signed my name to this specification this 30th day of July 1921.-

ALFRED o, COTY.

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