DE1561434A1 - Bags made of paper or the like. with flat handles and procedures for its continuous manufacture - Google Patents

Description

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Patent Attorneys Dlpl.-lnpj. P. Ti J «* -»! Ο

Les Ateliers de Constructions MeOaniques C. et A. HOLWEG, S, a r. 1., in Strasbourg (Bas-Rhin, France)

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Bags made of paper or the like with flat handles, and procedures for its continuous production

Priority: France, October 21, 1966

The invention relates to the continuous manufacture of bags from paper or a similar material with attached flat handles in a single operation.

As is known, the manufacture of bags

with attached flat handles, which are generally in two successive operations is carried out, the Handles or handles are placed after their own manufacture on the walls of the bag in a later operation following the manufacture of the same, nowadays in a single operation

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Operation continuously by means of the in the patent specification

of the applicant (patent application A 53.438 IIl / 33b of

September 6, 1966), according to which in particular a Bag is made, which two flat on the inner walls has handles glued on with reinforcement strips.

In particular, this procedure provides for

the running ¥ erkstoffstreifen to form the B _e Utels two transverse cuts to form, which later facilitate the severing of the tube sections, wherein the handles formed by a specially provided apparatus are so placed and adhered that they overlap these incisions.

However, in order to increase the industrial production speed of the bags with attached flat handles on the machine for carrying out the above method, it appeared expedient to replace the reciprocating movements used by a rotating system. However, to the It appeared that increasing the speed of the entire machine for the production of the bags with the flat handles attached was even further it is still expedient to have a machine working with perforations for the production of bags with the device for production to combine the handle, this machine for the production of the bags, due to its mode of operation, allows for operations for making incisions.

This new method of combining one

rotating machine with perforations for the production of the bags and the device for the production of the flat ones Henkel geaass the patent application mentioned is essentially duroh the following features are identified:

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1) The in the procedure of the named pa-

tent registration provided two vertical incisions, which by a later cut on both sides of the attached Handles are intended to enable the tubing to be separated into sections to form the bag, are replaced by perforation lines, which are previously provided in the still open, forward-running strip of the material for forming the bag.

This replacement of the incisions by perforations enables this later division into sections by a simple demolition process to be carried out, which is caused by a speed difference is realized.

.2) A reversing device ensures

that the handle on the surface of the strip in the correct Position to be placed in which the legs in the feed direction of the strip as it exits the manufacturing system as a result of its bending over are directed backwards.

This reversal is essential because when the tube intended to form the bag is moved, its bottom is at the front.

3.) The formation of the handles takes place on two

Very small diameter drums, one of which is on the side is yerschieblich compared to the other, wherein the folded paper strip is strongly pulled forward by an auxiliary pulling device and is cut through by knives rotating in the right direction.

This makes it possible to adjust the device comfortably according to the width of the bag »every compression

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of the freshly glued strip to avoid one to that To realize diameter proportional considerably smaller peripheral speed of the drums and at the same time a very large one Maintain production speed.

4.) The handles are applied to the moving strips by loosely rotating rollers, to which a movement is given, which presses them against the legs of the handles in order to put them on while passing, the circumferential speed of these should automatically adjust to that of the strip.

This training allowed in the correct Position the handle on the paper strip that will later be shaped into a bag, which has just been made and rotates against the direction of advance of the strip and stab'sst against a stop to at the right moment with regard to its position in relation to the perforation to get the acceleration which gives it the same speed and gives the same direction as that of the paper strip, where it is pressed firmly against this.

5.) A compressed air blowing directed at the legs of the handle causes the smooth, correct one Application of the same

This bubble prevents any risk of bad touch.

6.) The mandrel for the formation of the hose is with

provided with a flexible guide and has an incision at its end.

The guide and the incision make it easier

Passing the handle

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7.) The possibility of completing the

Perforating machine with one or more additional drums to make the opening of the bottom of the bag.

The invention is explained below by way of example with reference to the drawing.

Pig. Figure 1 shows the formation of the bag.

Pig. Figure 2 shows the correct position for attaching the handle to the strip.

Pig. 3 shows the formation and reversal of the handle.

Pig. 4 shows schematically the formation of the Hose.

Pig. Figure 5 shows the at the end of the mandrel

Formation of the hose to be provided incision.

In Pig. 1 receives the unwound from the reel 2 strip 1 of paper or a similar material at 3 the transverse perforation, which facilitates the tearing off by a speed difference, the later separation of the hose 4 formed at 5 by the mandrel 6, the mandrel being provided with an incision 7 at its end is, the width of which is sufficient for the handle to pass, and the depth of which is dimensioned so that at the point of the edge 8 the paper is not pressed forcefully onto the sheet metal. This incision is used to form flat tubes as well of hoses with bellows required. It avoids the risk of lifting off the items placed on the inside of the bag Handles showing a tendency to get caught on the edge of the mandrel.

Also, like in Pig. 4 shown, the 0098U / 0225

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for the simple flat hose or for the hose with bellows double mandrel 6 is provided with one or more guides 9 made of flexible steel, one end of which extends under the mandrel.

The handles 10 must be on the strip in front of the

Formation of the hoses are applied and glued in such a way that the legs in relation to the direction of advance of the strip are those in Pig. 2 have the position shown because in the formation of the The hose so that the bottom 11 is at the front (Fig. D.

The

Handle formed by folding backwards in the running direction, so that it takes position 12 (Pig · 3).

As shown schematically in the same figure, there is the handle, which is on the upper part the drum 13 has come into such a position that the legs with respect to the direction of rotation 14 of the drum backwards are directed, after rotating the drum 180 ° in the correct position 10, the legs are directed forward so that the handle can be attached to the strip »

The auxiliary device for pulling the folded paper strips, which are to form the handles and 1 longitudinal of the surface lines of a cylinder up to the moment forward

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geschober /, at which they are cut off and used with pliers to Bending to the rear are detected, has two rollers, namely a lower roller, which at one speed is driven, which is slightly greater than the feed speed of the strip is, and an upper loosely rotatable roller, so that a constant sliding between the strip and these

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Rollers and a significant pull between the rollers and a powerful drive roller. X at the moment in which the strip is cut by the two knives, it is grasped by forming pliers, which make it perpendicular to his take the original path with you · At this point the auxiliary device releases it with a low-amplitude lift-off movement the upper loosely rotating roller.

The two drums forming the handles,

which side by side in one according to the width of the to be produced Bags are arranged at an adjustable distance, cause the handle to be reversed by rotating it through 180 °, as stated above, whereupon the handles that have come into the correct position are released and abut against a stop, which is actually a simple piece of sheet metal, before the drum has reached its lowest position.

The device for accelerating the movement of the handle, which this at the right moment with regard to its position in relation to the perforation of the strip of material to form the bag has the same speed and given the same direction as that of the strip, pressing the handle forcefully on the strip, exists essentially of two loosely rotatable rollers, each of which is pressed against one leg of the handle, these rollers are attached to two levers arranged next to each other, which by a suitable mechanism such a movement it is granted that the locus of its lowest point describes a curve which the rollers over.the legs of the Henkel brings »to press on these, they press on those passing by Bring out strips of paper with a sliding motion

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ORIGINAL INSPECTED.

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to perform

This mechanism can be a fixed shaft with two also fixed cams, a rotatable squat and one have rotatable shaft, the movement of which is controlled by this latter cam by a system of levers. The fixed cam can, incidentally, be replaced by a steering system, which gives the rollers an approximately identical movement, but works more smoothly

It should be noted, by the way, that the movement of the loosely rotating rollers need not be very precise, because their peripheral speed automatically adjusts to that of the strip.

The tubes for blowing compressed air onto the legs, which cause them to lie flat on the Strips are applied, avoiding the risk of upsetting when the roller is moving towards the Drum executes are inclined next to these rollers.

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Claims (1)

Claims 1,) Continuous manufacturing process of bags made of paper or a similar material with attached flat handles in a single operation through combination a rotating machine working with perforations for the production of the bags with the device for the production the attached flat handle, in particular by means of the device according to the German patent specification ... » (Patent application A 53,438 IIl / 33b of September 6, 1966), characterized in that the in the process of said Patent application provided two vertical incisions, which by a later cut on both sides of the attached Handle the cutting of the tubing to form the bag in Sections should allow to be replaced by perforation lines (3), which previously slaufendeji in the still open forwards Strips of the material used to form the bag are provided will" Zm) Method according to claim 1, characterized in that the handles (1O) are applied to the surface of the strip in the correct position in which their legs are directed in the feed direction, in that they are turned over ^{by T80 Q,} because they are directed backwards in the opposite direction after they have been produced by folding them down. 3 *): Method according to claim 1 and 2, characterized marked that the formation of the handle on two drums takes place with a very small diameter, of which «; the one opposite the other according to the width of 4 of the fc, to be created: en Bag is laterally displaceable, with a Hilfgzugvorrich- 009814/0226 -ίο- 156U34 device pulls the folded paper strip of the handle forward, which is cut in the right direction by rotating knives will. 4.) The method according to any one of claims 1 to 3 _t, characterized in that the application of the handle in the correct position on the moving strip is carried out by two loosely rotatable rollers, which a movement is given, which they against the legs of the handle presses to put them on while the door is moving, the peripheral speed of these rollers automatically adjusting to that of the passing strip. 5) method according to one of claims 1 to 4, characterized in that a Druckluxftblasung directed at the legs of the handle, the smoothly correct application the same causes. 6.) The method according to any one of claims 1 to 5 _f, characterized in that the mandrel (6) is provided for the formation of the hose with a guide (9) facilitating contact with the handle and an incision (7) for their passage. 7. Method according to one of claims 1 to 6, characterized in that the perforation mechanism is combined with one or more additional drums for opening the bottom of the bag. ORIGINAL INSPECTED 009814/0225