DE1172109B - Machine for shaping tubes, especially drinking tubes - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school KI .: B 31 c

German class: 54c-l

Number: 1172 109

File number: G 35282 VII b / 54 c

Filing date: June 19, 1962

Opening day: June 11, 1964

In the case of drinking tubes, it may be desirable to reinforce at least one end so that one greater resistance to pinching by the user's mouth or fingers and better protection against absorption of moisture by capillary action is obtained.

The invention aims to provide a machine for deforming drinking tubes of the kind made from Helically wound paper, made of plastic or the like. Are made to create that automatically works and with which one or both ends of the drinking tube can be reinforced.

A machine for making drinking tubes out of helically wrapped paper, out of plastic Od. The like. Is known, but with this known machine no drinking tubes with reinforced End to be made.

The invention is based on a machine of the type mentioned in the introduction, in which an intermittent driven and insert grooves for the drinking tubes having delivery cylinder as well a plurality of endless ones located close to the cylinder and at an angle to the axis of the cylinder circumferential belts are provided for rotating and exerting an axial pressure on the tubes in the deformation station.

Such a machine is known and it is used to compress the drinking tube axially To form corrugations, through which the drinking tube is made more flexible. Even with this one known machine, drinking tubes with a reinforced end cannot be produced.

Furthermore, a machine is known with which the edge of paper containers, e.g. B. cups for Margarine or the like, can be flanged. This known machine is for the purpose of the invention not suitable, since an angled shaft and a rotatable hook-shaped shaft are used for flanging Head having spinning tool is provided, which due to its size not in only one very small diameter drinking tubes can be inserted.

In contrast, the purpose of the invention mentioned at the beginning is used in a machine of the type from which the invention is based, achieved in that at least one end of the feed cylinder from Holding shaft and press head has existing deformation tools, which the end wall of the tube to form a reinforcement layer concentrically inwards into the tube.

In one embodiment of the invention, the deforming tool consists of a curved machine for deforming small tubes,
especially drinking tubes

Applicant:

Arthur Graham, Palo Alto, Calif. (V. St. A.)

Representative:

Dr. E. Wiegand, Munich 15,

and Dipl.-Ing. W. Niemann,

Hamburg 1, Ballindamm 26, patent attorneys

Named as inventor:

Arthur Graham, Palo Alto, Calif. (V. St. A.)

Claimed priority:

V. St. v. America June 21, 1961 (118 627)

Wire loop, while in a further embodiment of the invention there is a radially protruding Has shaft which carries a head formed with a smooth outer surface at its end. This

The head extends preferably in one to the axis of the feed cylinder parallel direction over a considerable length from the shaft inward.

In a further embodiment of the invention, at least one is inclined with respect to the tube axis and provided at an acute angle to the plane of the other bands running band, which the Removing the tube from the deforming tool and also removing the tube from the Machine accomplished.

Finally, in a further embodiment of the invention, the feed cylinder is adjacent to a Corrugating station with a plurality of knives arranged on the outer wall of each tube create a plurality of score lines. Preferably a plurality are sequential at the corrugating station operable cams are provided which operate the knives one after the other, the continuously moving ligaments at the ver ^ forming station compress the tube wall at each score line to move axially of the tube to form successive corrugations.

Embodiments of the invention are explained using the drawing, for example.

Fig. 1 is a side view of the machine;

F i g. Figure 2 is a sectional view taken along line 2-2 of Figure 1;

409 599/22

ϊ 172 109

F i g. 3 is a sectional view taken on line 3-3 of FIG. 1;

F i g. Fig. 4 is a partial left side view of the machine of Fig. 1;

F i g. Fig. 5 is a fragmentary perspective view of the tube receiving delivery cylinder with the Deformation tools;

F i g. 6 is a partial sectional view showing the engagement between a tube and a deforming tool;

F i g. 7 is a view similar to FIG. 6 and shows a modified embodiment;

F i g. Figure 8 is a sectional view taken along line 8-8 of Figure 7;

F i g. 9 is a fragmentary view, on an enlarged scale, partly in section, of a reinforced one flexible drinking tube made by the machine according to the invention;

FIG. 10 is a schematic similar to FIG. 4 View showing a modified embodiment of the machine according to the invention;

Figure 11 is a sectional view taken along line 11-11 of Fig. 10;

Figure 12 is a view, partly in section, of one Drinking tube or the like, which is made with the modified embodiment of the machine.

With the machine shown, prefabricated cylindrical pipes or tubes, for. B. Drinking straws or drinking tubes, processed. Such tubes are usually made of spirally wound and glued together suitable material, cut to the desired length and covered with or in a moisture-resistant material Material immersed, e.g. B. solidifying wax or a plastic mixture. The machine works however, thin-walled flexible tubes of any type, for example those made of uncoated Straw material, ejected plastic, spirally wound cellulose, composite Material, or even thin flexible metal pipes.

The machine folds the end wall of the tube or straw concentrically inwards, to strengthen the end of the tube without tearing. The machine can continue to do so be designed that it reinforces both ends of a tube in the manner described. Possibly the machine can also make an intermediate part of the tube flexible by inserting a A plurality of score lines running on the outer circumference of the tube are introduced, whereby at the same time an axial compression of the tube is connected, so that corrugations generated as it is known per se. In general, the machine can be any combination of Operations can be adapted, which include reinforcing the end and making a bend Includes intermediate part of a tube.

A preferred embodiment of the invention is shown in FIGS. 1 to 6 and comprises a frame with side frames 10 and 12 which are arranged at a distance from one another and are supported by a platform 14 and lower support frame 16. The devices forming the various work stations are stored in the frame. The work stations include a Röhrchenzuführstation 18 having a feed chute, a forming station 20 with a rotatable feed cylinder, deformation tools and cooperating belts, a Wellungsstation 22 having a plurality of blade members and a discharge station 24. Preferably, the operations of the forming station 20 and the Wel ^j development station 22 at the same time carried out, although this is not essential.

The drive for the machine can be of the usual

ίο type, e.g. B. be an electric motor that has a drive belt 26, a pair of endless belts 28 associated with the deforming station 20 and above a drive belt 30 drives an endless belt 32 assigned to the delivery station 24. A second The motor drives a camshaft 34 continuously, which the knives at the corrugating station 24 in succession actuated. The camshaft 34 continues to drive via a chain wheel 28 and a chain drive 36 rotating brushes 40 continuously on,

so their purpose will be explained later. The second engine also drives an intermittently moving mechanism, preferably a Maltese cross which is connected to a shaft 42 of the delivery cylinder 44 of the deformation station 20. The MaI-tesertrieb causes the delivery cylinder 44 to incrementally rotate about each tube into position to carry out the operations at stations 20 and 24 simultaneously.

The operation of the drive mechanism is described and illustrated in detail in US Pat. No. -2,985,077 and can be found in the following Description of the various workstations in the machine.

Feeding station

As best shown in Figs. As shown in Figs. 1 and 3, tubes 50 of suitable length and size are provided Diameter meter is fed to a funnel-shaped chute 52 which has a substantial supply of tubes 50 can accommodate. At its lower end, the chute 52 has an opening 54 into which the upper part of the feed cylinder 44 extends into it. The latter is with a majority in its longitudinal direction extending semi-cylindrical insertion grooves 46 are provided, which emerge from the opening 54 of the Slide 52 can each accommodate a tube 50. The lower edge 56 of the front wall 55 of the Chute 52 is spaced just enough from the conveyor cylinder 44 to allow the passage to enable each of a single tube 50 (Fig. 1). In the wall 55 are still one Number of upwardly extending recesses 58 provided in which rotating brushes 40 are arranged are. The brushes 40 rotate in the opposite direction to the direction of rotation of the feed cylinder 44 Direction and work together with the delivery cylinder 44 to each one tube 50 under the Show the lower edge 56 of the wall 55.

By gradually rotating the feed cylinder 44 on its support shaft 42, the individual Tube 50 advanced stepwise downwards. In the process, the tubes 50 will stop falling out the grooves 46 by guides arranged concentrically near the front surface of the feed cylinder 44 60 prevented. These guides 60 are carried by rods 62 which are inserted into the side frames 10 and 12 are stored.

Against deformation due to moisture (swelling) as well as additional strength can be obtained by further application of wax, which can fill the space between the inner layer 83 and the wall of the tube 50. The F i g. 7 and 8 show a modified embodiment of the deforming tool, which is denoted by 84 α. As shown, the modified embodiment has a curved one

Deformation station

When a tube 50 reaches the lowest position (indicated by 50a in FIGS. 1 to 8),
join one or more friction elements with it
engaged. In the illustrated embodiment
the friction elements have a pair of endless
Belts 28 on the drive pulleys 70 and
Empty discs 72 run and through tensioning rollers 74
(Fig. 1 and 4) from below against the tube 50 ία wire, which forms separate shafts 86a. These are printed. The belts 28 are moved with a separate shaft 86 α allow a precise arrangement linear speed, the considerable NEN of the tool 84 a, so that the possibility is greater than the linear peripheral speed of a misalignment of the head 87 α in the end of the conveyor cylinder 44, and they cause the groove 46 is quickly reduced to a minimum. The turning of each tube 15 modified deforming tool 84 a, which is presented in the position 50 a, works similarly to the 50th borrowed tool 84 insofar as one of the

As best shown in Fig. 2, the shafts 86 a is used to bend the end wall of the tubular belts28 to the direction of rotation of the feed cylinder 44 Chens 50 initially, while the gein an angle or obliquely arranged so that the bent part between the Shaft 86 α and the head lowermost tube at the same time as the fast 20 87 α and the head 87 α itself are used to move the end turning with considerable force in the longitudinal direction against wall inward into the tube 50 at one end of the feed cylinder 44. to be centered.

According to FIG. 5 is in one end of each groove 46. In both embodiments, the faceplate

Deformation 85 engaging with the tube end is provided with recesses 47 which are provided for the grooving tool 84. In the illustrated 25 46 in the conveyor cylinder 44 are in alignment. In the embodiment, the deforming tools have recesses 47, while the ver-84 has a cylindrical shaft 86, which smoothly passes over, in the formation of the tube ends, scraped, fallen or chipped wax or other cylindrical head 87 extending at right angles to it, as in FIG F i g. 6 to lead away coating material. As the deformation put. To arrange the deformation tools 30 always in the same place, the position 50 α, instead of 84 in the correct position at the end of the grooves 46, excess wax or other an end plate 85 is provided, which is a row
having radial grooves 88 in which the shafts 86
of the tools 84 are added. Everyone
Shaft 86 is e.g. B. by an adjusting screw 89, against 35
a rotational movement within the groove 88 is secured.
Preferably, the face plate 85 is removable to
an exchange of deformation tools 84 to
enable.

As stated above, the bottom 40 gene of corrugations is an advantageous one, but not one Tubes 50 through the bands 28 while at the same time a necessary feature of the invention and can rapid rotation around its axis towards the end may be omitted.

of the groove 46 and against the deformation tool 84. According to FIGS. 1 to 3 shows the device

emotional. During this movement for the introduction of corrugated rings, the tube 50 strikes a number of joint joints the shank 86 of the tool 84, with its 45 th elements or blades 100 on, their upper edges End wall initially bent radially inward 102 are designed as knife edges. The leaves (upper part of Fig. 6). With continued rotation 100 are articulated on a cross bar 104, which in FIG and axial movement of the tube 50 comes which the Seitenrahrneri 10 uad 12 is mounted, and each bent end wall with head 87 of blade 100 is provided with a cam 110 pick-up tool 84 in engagement and is provided by this conical recess 106. On the circumferential center The surface of the cam 110 wedged onto the shaft 34 is folded inwards into the tube 50 (lower part of FIG. 6). As a result, a trailing part 108 runs in the, which is attached to the upper um-tube 50 a concentric inner layer 83 is provided at the start of the recess 106. On the ground forms, which in particular in FIG. 9 is shown. the recess 106 is one with the cam 110 During the folding down, the inner layer 83 is not formed, a dead trailing surface 114 that does not engage, does not crack or tear and consequently form. Generally, each blade 100 operates on a pair one of which is composed of a substantially rigid reinforcement of opposing projections 112, the clothes, which are provided to the remaining part of the tube 50 on the cam 110 and with the is in axial alignment. Such a reinforced trailing part 108 and the trailing surface 114 on-end 90 of a drinking tube has, in comparison, 60 successively engaging, to the end of a conventional drinking tube or when working, the leaves 100 run underneath

Drinking straws have a considerably higher structural structure of the upper surface of the straps 28 until a tube Strength and shows no cut ends 50 moved to the position SOa Wördeii is. To this or fibers that can absorb moisture. Time occur the cam projections 112 with the If the straw material previously engaged with paraffin or 65 trailing parts 108 in quick succession and Coated with a similar saturating wax cause the knife claws 102 to engage that is, the end will also be quickly raised against moisture with the tube 50, made impermeable. An additional resistance The tube is caused by the movement of the ligaments

Coating material scraped from the ends of tubes 50 is conveniently removed.

Corrugation station

The corrugation station 22 is located immediately below the position 50 o, and the introduction of the Corrugations take place at the same time as the tube ends are deformed at station 20.

28 rotated against the knife edges 102 at the same time. This creates a row on the outer circumference of the Tube 50 of gradual score lines 118 (Fig. 9) is generated. At the same time, it affects the tube 50 axial force exerted by the bands 28 compressing the tube 50 at the score lines, so that corrugations are formed. The corrugations are at 116 in FIG. 9 shown, which continues the Wall structure in the area of the score lines 118 reproduces.

From Fig. 3 it can be seen that any contact between a cam projection 112 and the Cam follower 108 is extremely short in duration, and it is followed by sliding contact between

the bands 28 is inclined in the opposite direction. Thus, the belt 32 shifts when it is with a tube 50 comes into engagement, this immediately laterally to the left and pulls it from its deformation tool 84 return. The tube 50 is now free from the feed cylinder 44 and falls onto the belts 28 and 32 and is conveyed from the machine to a collecting device.

Way of working

Let’s briefly repeat the operation of the machine: get; there are drinking tubes or other tubular objects made of helically wound Paper, plastic or the like. Which previously on the

a lower cam lobe 112 and cut to the desired length, the Running surface 114. Slide 52 fed by the latter contact. The individual tubes 50 the blades 100 are pivoted downwards and are passed through the lower opening 54 of the chute 52 withdrawn from tube 50. This according to against the surface of the delivery cylinder 44 the F i g. 1 and 2 outermost right sheet 100 comes out where it goes into the laterally extending first engage the tube 50 and then receive grooves 46. The progressing to the left the other sheets with respect to the direction of rotation of the feed cylinder 100 each in quick succession. These working 44 oppositely rotating brushes 40 that only wise is preferred because it allows each tube 50 to enter a groove 46 and Reduction of the tube length, which is due to the fact that the tubes 50 Manufacture of the corrugations occurs as the 35 occurs at the opening 54 of the chute 52. The tubes 50 arranged in the grooves 46 are compensated for in the longitudinal movement of the tubes 50

without the tubes being deformed by the step-by-step rotation of the conveying tools 84 to be withdrawn. Cylinder 44 along the guides 60 downwards

The moves with the shaft 34 of the feed cylinder 44 until they reach the lowest position 50 a, Bound Malteser drive calls for a step-by-step rotation of 3 ° of the conveyor cylinder 44, which is just sufficient, 44 inclined belts 28 with the relevant around each successive tube 50 into the tube 50 engages, whereby the tube 50 To bring position 50 a. To work effectively, quickly rotated around its axis and lengthways To ensure the machine, it is necessary that against the deformation tool 84 (or 84 a) op continuously rotating shaft 34 moves in a direction 35 provided at the end of each groove 46 tiger phase to the rotation of the feed cylinder 44 is. The deforming tool 84 causes the turns. In the illustrated embodiment, the end wall of the tube 50 rotates radially inward the shaft 34 by 180 ° when the conveyor forms and progressively concentrically inwards cylinder 44 rotates by 30 °. This allows the tube to be tipped over to power the amplifier one and then the other of the cam projection position 83 as shown in FIG 112 is the knife edges 102 for engagement with provides. Simultaneously with deforming for reinforcement of the tube end causes the rotation of the cams 110 carried by the shaft 34 according to a figure shown in FIG 1 shows the upward movement of the knife edges 102 of the blades, progressing from right to left 100 in engagement with the outer surface of the tube 50 to be deformed the outer surface of the tube 50 is introduced circumferentially extending score lines, which in connection 50 tion with the axial compression of the tube 50 is used to generate corrugations that at 116 in FIG. 9 are shown.

At the time when the tube ends are reinforced and the corrugations are introduced

retracting the deforming tool 84 is completed at 55 116, the delivery cylinder 44 rotates to be able to deliver it from the machine. This ar- one more step forward and moves that done Working process takes place at the delivery station 24 by means of machined tubes 50 in a position in which of the belt 32. the belt 32 engages with it (Fig. 4). this

According to FIG. 4, the belt 32 runs with reference to FIG. 4 which produces a lateral axial movement of the tube the delivery cylinder 44 and the position 50a something 60 50 to the left (Fig. 2), whereby it is from the oblique up while the belts 28 are retracted and removed from the scale forming tool 84

the tube 50 lifts. Of course, other cam sequences, including different ones, can also be used incremental speeds of the feed cylinder rotation can be selected.

The device described for making corrugations on a drinking tube is in the above U.S. Patent 2,985,077.

Delivery station

After deforming the end of the tube at station 20 and introducing the corrugations the station 22 it is necessary to remove the tube 50 from

run right. The band 32 is arranged in such a way that it holds the finished tube 50 detected at the moment when this leaves position a.

From Fig. 2 it can be seen that the belt 32 with respect to the axis of the feed cylinder 44 laterally arranged obliquely to the left and consequently to

Machine is delivered.

Modified Embodiment For many purposes it is desirable that both Ends of a drinking tube or the like. Be reinforced. A device suitable for this purpose is shown in Figs. 10 and 11, and it is with the

identical to the device described above, with the exception that additional belts are provided which cooperate with veriormungswerkzeugen at the second end of the conveyor cylinder 144 .

As best shown in FIG. 10, the bands 128 corresponding to the bands 28 of the first embodiment run slightly obliquely downward and come into engagement with the relevant tube 150 at a point 150 α immediately before the lowermost position. As can be seen from Fig. 11, the bands 128 are arranged laterally obliquely to the right, so that the tube 150 in question is moved against the corresponding deformation tool 184 at the right end of the feed cylinder 144 when it reaches the position 150 a.

In addition, straps 130 are provided which, according to FIGS. 10 and 11, run slightly obliquely upwards and to the left and engage a tube 150 immediately after it has been released by the straps 128 in a position 150 and move it to the left against the corresponding one Move deformation tool 184 α.

Furthermore, the belt 32 of the first embodiment corresponding belts 132 are provided, which according to FIGS. 10 and 11 run rather steeply upwards and somewhat to the right. These bands 132 pull the tube 150 in question back from the deformation tool 184 α and release the now finished tube 150 from the machine.

When operating the embodiment shown in FIGS. 10 and 11, a single tube 150 is first rotated by the belts 128 and moved against the corresponding deformation tool 184 at the right end of the feed cylinder 144 (position 150 a) in order to reinforce the right tube end. Then the tube 150 is moved laterally to the left with further rotation by the bands 130 against the corresponding deformation tool 184 a at the opposite end of the feed cylinder 144 (position 150 b) in order to reinforce the second tube end. Finally, the tube 150 is withdrawn from the left deformation tools 184 a by the straps 132 and released from the machine. A tube 150 provided with two reinforced ends 190 is shown in FIG.

The device according to FIGS. 10 and 11 can be used in conjunction with a corrugating station 22 .

Claims (7)

Patent claims: 1. Machine for deforming drinking tubes of the kind made of helically wound paper, plastic or the like, with an intermittently driven feed cylinder with insertion grooves for the drinking tubes and a plurality of endless ones arranged close to the cylinder, at an angle to the Axis of the cylinder of revolving belts for rotating and exerting an axial pressure on the tubes in the deformation station, characterized in that at least one end of the feed cylinder (44) has deformation tools (84, 84 a, 184, 184 a) consisting of a holding shaft and press head, which fold the end wall of the tube (50 or 150 ) concentrically inwards into the tube to form a reinforcement layer (83). 2. Machine according to claim 1, characterized in that the deformation tool (84 α) consists of a bent wire loop. 3. Machine according to claim 1, characterized in that the deformation tool (84) has a radially protruding shaft (86) which has a smooth at its end Outer surface formed head (87) carries. 4. Machine according to claim 3, characterized in that the head (87) is in a to Axis of the feed cylinder parallel direction over a considerable length from the shaft (86) extends inward. 5. Machine according to claim 1, characterized in that at least one belt (32 or 132) extending obliquely with respect to the tube axis and at an acute angle to the plane of the other belts (28 or 128, 130) is provided which supports the tube (50 or 130). 150) pulls off the forming tool and also manages the removal of the tube from the machine. 6. Machine according to claim 1, characterized in that a corrugation station (22) is arranged adjacent to the feed cylinder with a plurality of knives (102) which produce a plurality of score lines (118) on the outer wall of each tube. 7. Machine according to claim 6, characterized in that a plurality of successively operable cams (HO) is provided at the corrugating station, which operate the knives one after the other, the continuously moving belts (28 or 128) at the forming station the tube wall at each Compress the score line to form successive corrugations (116) as the tube moves axially. References considered: U.S. Patents Nos. 2,985,077, 2,931,278, 759 For this purpose 2 sheets of drawings 409 599/22 6.64 © Bundesdruckerei Berlin