US1942345A - Manufacture of paper bottles - Google Patents

Description

Jan. 2, 1934. c. msww' 1 1,942,345

MANUFACTURE OF PAPER BOTTLES Filed Dec. 22, 1932 czvyezzfor:

a BX 477W Patented Jan. 2, 1934 Carl Ristow, Berlin, Germany Application December 22, 1932, Serial No. 648,487;

' and in FranceDecember 30, 1931 9 Claims. (01. 931-39) The present invention relates to a process and apparatus for the manufacture of paper bottles. Paper bottles have hitherto been made by conically tapering at one end cylindrical or very slightly conical tubes or sleeves by means of a folding appliance, whereupon they are guided in a horizontal position one after the other by hand or else by means of feeding devices to -a series of individual machines, which serve to convert the tubes step by step into paper bottles,

Some of these machines served firstly to punch out the bottom, to-provide it with a flange, and to secure it to one end of the tube, by fianging it over for example, while'other machines. modi- 16 fled the shape of the other end at the bottle-in such a way as finally to produce the bottle neck. The bottles were then immersed in paraflin baths, usually by hand, and then dried.

Now according to the present invention the 20 tubes are guided from the winding machine to a device in which the individual implements for the production and insertion of the bottom and the shaping of the bottle neck, which were formerly separate, are combined with one another The tube is carried past stepwise between the implements fitted to this machine and acting simultaneously on both sides, and the finished bottle bodies are then conveyed mechanically to a saturating device in which they are saturated, and are likewise dried with mechanical conveying.

The transfer from the winding machine to the actual bottle-shaping machine by the process of the present invention is preferably also effected mechanically, for instance by means of a conveying wheel, from which the tube is transferred by a ram to the actual shaping machine.

It has been found advantageous, for the simplifying of the operation, to effect the conical tapering of one end of the'tube in the conveying wheel during the time in which the-tube, which has been produced by winding, glued, and printed if desired, is being carried to the shaping machine by half a revolution of the conveying wheel.

In the shaping machine itself endless bands of the nature of'the caterpillar chains are provided. Upon the plates are fitted moulds into which the tubes that come from the winding machine are introduced. These endless bands, upon which the moulds are arranged side by side in two or more rows, are carried through stepwise between pairs of implements arranged above and below the caterpillar chain, so that with simultaneous treatment of the tubeson both sides the bottom is inserted at one end and the neck isformed at the other end. The moulds are located in a vertical position during their passage from one pair of implements-to another. By this arrangejment a number of important advantages are ob-L tained. The output capacity of the machines is considerably increased by the fact that two or more caterpillar chains arranged side by side shaped, come to a standstill for amoment, so that the moulded articlel retains the form given to it.'

A further advantage is that when double im-' plements are employed the speed of revolution of the machine can be reduced to one half for the same output, so that the machine becomes 'less worn. f

Apparatus for manufacturing'paper tubes according to the present invention is illustrated in the accompanying drawing, mainly in sectional elevation. I 1

The actual pressing station 'is denoted by A. To the right of this pressing stationis located a winding or wrapping machine B, with a folding appliance, and to the left a removing device C for the finished bottles, by which these are deflected to the paraifining and drying'apparatus D, which, in the interests of economy of space,

extends above the actual pressing machine and the winding apparatus. v

In the winding machine B,'-which is of known constructional form, the paper blanks are lodged in a stack 1, which is raised stepwise, from the machine gear, and from which a suitable device takes off the uppermost 'blank from time to time to deliver it past gluing rollers 5 toa winding or wrapping mandrel 2, upon which a cylindrical or very slightly conical tube or sleeve is formed from the blank by'windingthe latter round the mandrel. The blanks are made from a paper which is so prepared as to be particularly dense or fluidtight. In the form of con.- struction illustrated, two winding mandrels'are provided side by side, of which only one islvisible in the elevation View, so that two sleeves are produced at the same time.- These are then pushed off the winding mandrel in an axial di ejector ,3.

rection, provided with an impression by printing devices 6, and pushed on to a wheel- 7, provided with folding mandrels 8, by actuating an This wheel executes stepwise rotations each-amounting to one-sixth of a revolution, the paper tubes being pressed against which each run over two rollers '10 and are driven by them. They consist-of linked chains, between which plates are secured, and therefore correspond to the driving elements of caterpillar tractors. Upon these plates 9, which compose the band, are fitted the moulds 16, into which the previously foldedpaper tubes 4 are inserted, with the neck end inwards. There are furthermore supported 'in'the machine frame a number of pairs of implements I, II, Ill and IV, which, with stepwise advance of the band with the moulds, penetrate each time. into the successive moulds on both sides,'an'd in so doing gradually impart to the article under treatment the shape of a bottle. Inthe manner already known in manufacturing bottles by the aid of similar machines the bottoms of the bottles are punched out of a strip of paper, which runs in from the side.

The bottom is provided with a flange, and is then forced by pressure into the end of the shaped tuba-whereupon the bottom is secured by folding over the edge. At the same time the neck-of the bottle is formed'step bystep. The strip of paper rumiing off out of the machine is cut up .into small pieces, which drop into a basket. -The paper strip, with the punching implements, and the other devices for forming the bottom, and also the cutting device by which the strip of wasteis automatically disintegrated, are not illustrated in the drawing, nor are the details of the production of theneck of the bottle. The upper implements are driven from a main shaft 11, which is guided in the upper frame 12 of the machine, and is provided with cam discs such as 17 and 18, by which the rams, such as 19 for example, are moved. By suitably designing the cam discs the result can be obtained that the rams, upon reaching their end position, remain practically stationary for a moment, while thefacture of paper vessels, remains for an appreciable time under the influence of the pressure applied. The ramsslide in guides, such as 14 for example. The lower rams are also driven in any convenient and suitable manner, which need not be more fully described.

The method of operation in detail is as follo'ws:--The moulds arriving at the position of the pairs of implements I are partially shaped by the upper and lower rams; the upper ram prepares the upwardly directed end for the reception of a bottom, and the lower ram, by means of a moulding piece 20, changes the shape of the other end of the bottle in such a way that it ultimately produces a neck. At the position of the pairs of implements II, the-bottom, which has meanwhile been punched out, is inserted by the upper ram and pressed, while the lower ram carries the shaping of the neck a step further. In the position of the pairs of implements III the inserted bottom is then joined to the bottle y folding over the edges, this being further continued in the position IV, while at the same time the shaping of the neck is completed by the lower rams.

In the position of the pairs of implements IV both the bottom and the neck of the bottle are finished by pressing, and are calibrated to the correct shape, and the bottle bodies can now be removed from the moulds. This is efiected at a position of the endless bands, which is just opposite to the introducing position. When the moulds 16 containing the finished bottle bodies arrive at this position they come opposite to suction nozzles, which are secured upon slidable pipes 36, and are kept under vacuum by an air pump 3'7. The suction air draws the finished bottle bodies out of the moulds l6 and guides them on to holding sleeves 38, which are mounted upon a bucket elevator 39. Upon the latter they travel in the direction of the arrows to a position where they are located in front of a blowing nozzle 40, which is likewise connected to the pump 37. The 'blast of air here coming into operation blows the bottle bodies out of the holding sleeves 38 on to holders 41, which are located upon a bucket elevator 42 forming part of the paraffining and drying apparatus.

This paraflining apparatus D consists of a rather long casing, which, in the interests of economy of space, -extends over the entire machine, and in which the bucket elevator 42 circulates with the tubes mounted upon the holders,

being driven by the shaft 11. The bucket elevator travels round in the direction of the arrows. It is guided in such a way that the bottle bodies.

mounted thereon are guidedfirst through a preliminary drying chamber 43, and then into a saturating bath 27, containing paraflin as a rule, which is heated by means of gas burners 44. The bottle bodies here saturated then travel in a zigzag path, whereby the result is obtained that the saturating medium dripping off the bottles is. caught in the vessel and does not splash on to the succeeding bottle bodies. At 28 the heating passage is so far narrowed that a warm eddy current arises, in which the bottles are dried particularly rapidly. From the highly heated eddy current, the bottle bodies then pass into a cooler chamber 29, and from here into an open-air track 30, where they are completely dried at normal temperature. The finished bottles are then taken. off at a suitable point, and suppliedfor example to a device for stripping them. The bottles may thus be supplied to the filling installations of dairies without being touched by the human 13 hand.

The machine is driven by the motor 34, which in the first place acts through the belt 33 upon the shaft 11, andthereby actuates the pairs of implements of the shaping machine. From the shaft 11 a shaft 15 leads to the paraflining apparatus, and, through the wheels 21 and 22, drives the guiding wheels 23, over which run the bands with the bottle tubes.

From the main shaft 11 abelt 24 acts through '140 the medium of a pulley upon a rod or shaft which is not visible in the drawing because it is located behind other parts of the apparatus. This shaft leads to two toothed'wheels 25, which are connected-by a rod or shaft with a bevel wheel 26, from which the winding machine and the rotatable disc 31 are operated.

I claim:

1. A method of mechanically manufacturing paper bottles, comprising winding paper blanks bottles from the said conveying into tubular form and securing them in that form with adhesive, folding one end of each tube into conical form in a horizontal position, erecting the same, forming the conical end of each tube into a bottle-neck shape and at the same time inserting a bottom in the other end of the tube, the tubes being carried along stepwise with their axes vertical during these neck-shaping and bottom-inserting operations and being operated upon from above and from below simultaneously immersing the completely shaped bottles in a horizontal position in an impregnating bath, and drying them after impregnation by moving them through air, power for the winding, sticking, folding, neck-shaping, bottom-inserting, impregnating and drying operations being supplied from one and the same source.

2. Apparatus for mechanically manufacturing paper bottles from paper tubes which are conical at one end, comprising implements for shaping bottle necks at the conical end of the tubes, implements for inserting bottoms in the other end of the tubes at the same time, conveying. means for carrying the paper tubes with their axes vertical past the neck-shaping and bottom-inserting implements, animpregnating bath, a drying chamber, and an impregnating and drying conveyor adapted to receive the bottles from the said conveying means and to pass them through the impregnating bath and the drying chamber.

3. Apparatusfor mechanically manufacturing paper bottles from paper tubes, comprising implements for shaping bottle necks at the conical end of the tubes, implements for inserting bottoms in the other end of the tubes at the same time, a folding wheel adapted to fold one end of the paper tubesinto conical form, conveying means adapted to receive the paper tubes from the folding wheel and to carry'them with their axes vertical past the neck-shaping and bottominserting implements, an impregnating bath, a drying chamber, and an impregnating and drying conveyor adapted to receive the bottles from the said conveying means and to pass them through the impregnating bath and the drying chamber.

4. Apparatus for mechanically manufacturing paper bottles from paper tubes as claimed in claim 2, further comprising rams at oneend of the apparatus for transferring the tubes to the conveying means, and means acting by air suction at the other end of the apparatus for transferring the bottles from the said'conveying means to the impregnating and drying conveyor. I

5. Apparatus for mechanically manufacturing paper bottles from paper tubes which are conical at one end, comprising implements for shaping bottle necks at the conical end of the tubes, implements for inserting bottoms in the other end of the tubes at the same time, conveying means for carrying the paper tubes with their axes vertical past the neck-shaping and bottom-inserting implements, an impregnating bath, a drying chamber,and a bucket conveyor adapted to receive the means and to pass them through the impregnating bath and then in a zigzag path through the drying chamber, means for heating the air and producing eddies of hot air in the drying chamber, and a delivery station, the bucket conveyor being further adapted to convey the bottles out of the drying chamber into the open air and then to the delivery station.

6. Apparatus for mechanically manufacturing paper bottles from paper tubes which are conical at one end, comprising implements for shaping bottle necks at the conical end of the tubes, implements for inserting bottoms in the other end of the tubes at the same time, an endless caterpillar chain-like band adapted to carry the paper tubes with their axes vertical past the neck-shaping and bottom-inserting implements, moulds secured to this band for accommodating the paper tubes, an impregnating bath, a drying chamber, an impregnating and drying conveyor for passing the bottlesthrough the impregnating bath and through the drying chamber, and means for transferring the bottles from the chain-like band to the impregnating and drying conveyor. I

these bands for accommodating the paper tubes,

an impregnating bath, a drying chamber, an im pregnating and drying conveyor for passing the bottles through the impregnating bath and through the drying chamber, and means for transferring the bottles from the chain-like band to the impregnating and drying conveyor.

8. Apparatus for mechanically manufacturing paper bottles from paper tubes as claimed in claim 5, further comprising a casing enclosing the bucket conveyor except where it passes into the open air, the bottom of this casing containing the impregnating bath, and the eddy-producing means being constituted by a constriction in the cross-sectional area of the casing at a position above the impregnating bath.

9. Apparatus for mechanically manufacturing paper bottles, forming paper into tubes, a folding wheel adapted to fold one end of the paper tubes into a conical form, a ram for removing the tubes from the said wheel, implements for shaping bottle necks at the conical end of the tubes, implements for inserting bottoms. in the other end of the tubes at the same time, an endless caterpillar chainlike band adapted to carry the paper tubes with their axes vertical past the neck-shaping and bottom-inserting implements, moulds securedto this band for accommodating the paper tubes, an impregnating bath, a drying chamber, a bucket conveyor for passing the bottles through the impregnating bath and through the drying chamber, means acting by air suction for transferring the bottles from the endless caterpillar chain-like band to the bucket conveyor, a single motor capable of driving all the said elements, a main shaft driven by the motor, and means adapted to transmit the requisite power from the main shaft to the said elements.

CARL RISTOW.

comprising a winding machine for

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