DE1245699B - Method and machine for the production of carrier bags which lie flat in the folded state and are provided with gussets and a block bottom, made of paper or a similar material - Google Patents

Description

Method and machine of carrier bags that are folded in State lying flat with gussets and a block bottom, made of paper or similar material The invention relates to a method and a machine for the production of carrier bags that lie flat when folded and are provided with gussets and a block bottom, made of paper or the like Material whose opening edge area is reinforced by cardboard or similar stiffening means is that in the form of a flap inwards in opposite directions to the Forming a folding base can be folded so that they lie on top of each other, wherein the lower flap one or more handles made of string, cord or the like. wearing, by hand through one or more slots located in the top flap are, can be plugged, so that the carrying case in the closed state Box shape is kept.

It is a carrier bag like the one found in textile shops, Department stores or similar shops are used that are filled on all sides is tightly closed and has the shape of a cardboard box. The cardboard shape of the carrier bag is created by the rectangular block bottom shape and the special design the pocket opening, which is determined by the shape of the applied reinforcement means as well the forming fold creates the possibility to also close the pocket opening, The dimensions of the edge of the closure match the dimensions of the base. These tote bags are made by one or more handles, which can be made of flexible fabric, carried. The attachment of these separate handles is done by hand, in such a way, that they are attached to the lower flap of the carrying case and after the upper Tab is folded over, inserted through the slots in this tab will. The known per se carrier bags made of paper od. Ä. Material are only partly made by machine. The machine production of the. carry bag primarily refers to the introduction and gluing of stiffening inserts at a certain distance behind or next to each other on the running web, on the Hose formation and gluing in the longitudinal direction and on the separation of the sections.

In particular, soil formation is carried out manually Gluing done: The perforations and incisions are punched in by machine, however, the pockets are fed to the punching device manually.

For the machine production of carrier bags or the like, there are already Machines in which hose formation as well as glue application and bonding are done by machine he follows. These machines, which are specially designed for the production of bags, sacks - or Ä. Objects made of paper or related materials are used, have a glue applicator on, which works in such a way that a glue scoop roller dips into a glue container and the glue layer on this scoop roller with the help of a fixed scraper or a rotating scraper roller can be adjusted. From the scoop roller then the glue is removed from the adhesive strips and transferred to the paper web.

The known glue application devices of this type are constructed in such a way that that the drive of the scoop roller is firmly coupled to the drive device of the machine so that the speed of the scoop roller follows the speed of the machine.

This arrangement has resulted in certain disadvantages in practice, and although this device promotes when starting the paper processing machine only insufficient glue, which has the consequence that the first paper webs are not satisfactory Glue application received and thus insufficient gluing takes place.

In addition, when the machine is running slowly, the scooping roller, like z. B. when setting, only convey a smaller layer of glue than when running at full speed, so that the glue layer has to be readjusted during operation. At a standstill the machine will stop running the scoop roller and the glue on its surface becomes encrusted, which naturally can lead to malfunctions.

It is also known to operate automatically when the machine drive is at a standstill powered glue transfer device to rotate further to a Drying up to avoid the glue on the scoop roller. In this case, however, the Machine will continue to transfer glue to the suction roll where the glue will pile up and will cause difficulty restarting the engine.

In this context, there is a glue application device on machines became known in particular for the production of bags or sacks, in which the Scoop roller in the lower speed range of the machine via an independent motor is driven, which in a known manner as a continuation motor for the scoop roller is used when the machine is at a standstill; and that the scoop roller is optionally in connection with: a freewheel or a clutch is coupled to the machine drive, that when the drive speed of the independent motor is exceeded, the drive the scoop roller takes place from the machine.

The scoop roller can be used in the lower speed range of the machine be driven by a controllable electric motor or via a variable speed gearbox be driven by the independent motor.

However, the scoop roller can also operate in the normal speed range of the machine driven by the independent motor and this controlled by the machine be that its speed changes with that of the machine.

The scoop roller can also operate in the normal speed range of the machine by the same via a controllable gearbox in connection with a freewheel a clutch can be driven by the machine.

To ensure an even layer of glue on the duct roller, you can the glue application device can be equipped with a glue scraper. This scraper can either be fixed or designed as a rotating scraper roller. Advantageous according to the invention, the drive of this stripping roller is chosen so that the speed this roller is essentially constant and independent of the speed of the rest Rolling and significantly less than the speed of the scoop roller is what is best the stripping roller is driven by a separate motor.

The partly machine, partly manual production of such Tote bags has the disadvantage that the manufacturing price is high and the number of pieces is limited per person and time unit.

The inventor has now. set the task on the aforementioned Area to disclose a method and a machine with the help of which it is possible is to carry out the entire workflow automatically in the future and for those the identified deficiencies have been eliminated. It is noted here that although individual Process sections and individual devices forming the overall machine are known are, but it is new to run the method according to the invention and . to combine the individual devices with each other so that a smooth The process of manufacturing the carrier bag from the paper roll to the finished product is guaranteed.

To this end, the method according to the invention is characterized in that the continuously moving paper web is glued, two adjacent Stiffening agent supplied to the paper web, aligned and side by side are glued at the appropriate distance with the continuous paper web that Paper web with stiffeners perforated, grooved at 45 °, slotted, lengthways of the paper run, glue is applied for bonding to the hose and then the web is folded to the side-gusseted tube, afterwards in the carrying bag corresponding Sections to be separated, on which the bottom is laid, folded, glued and sealed, if necessary reinforced by a soil cover sheet.

The machine for carrying out the method is characterized by the combination of the following features: a) paper handling, b) a gluing device for the cut stiffening agents, if necessary for the stiffening agents running off the roll, c) an application device for the stiffening means with alignment stops, if necessary Cutting device to bring this to the paper running through and through Pressing and gluing pressure elements, d) a deflection cylinder with pressure element for pressing the paper web onto the stiffening means, e) a hole punching device for punching the holes for the cord of the handles, f) a rolling device for attaching the diagonal folds as a means of easily closing the opening, g) a slot device for making the required slots in the upper cover flap for pulling the cord handles, h) a roller train with endless pressure cloths to hold the stiffening agent on the paper web, i) a gluing device for applying the longitudinal glue seam, j) a tube forming device to form the side-gusseted tube, k) two pairs of paper feed rollers, which the Pull the gusseted tube or the paper web into the machine, 1) a cutting device to separate the continuous paper web in a length that is suitable for a carrier bag is required, m) a bottom laying cylinder and folding cylinder to form a block bottom, n) a further leaning device for applying glue to the bottom part, o) if necessary a cover sheet sticking device for applying a bottom reinforcement sheet, p) a displaceable gripper delivery drum and stacking device for storing the finished carrier bags.

Here, the glue application roller for the stiffening agent is at a standstill the machine from the paper web and the glue transfer roller without stopping the same withdrawable. The two stiffening agents are fed in at the same time mechanical or pneumatic means.

The machine is also characterized by movable stops for aligning the supplied stiffening agents and ascending and descending transport rollers to .your takeover. At the same time facilities are available to the stiffening means from peel off the roll and perforate. ' There are also tear-off bodies, if appropriate Knife or the like, present to the stiffening means when feeding onto the paper web to separate and stick on the web.

To press the stiffening agent onto the paper web, and outgoing pressure rollers or endless pressure belts are provided. To lead the Paper webs are a large-diameter deflecting roller and other endless cloths arranged to. the paper web and the stiffening agent under one standing To hold contact pressure.

The devices for punching, creasing or slitting the tabs are arranged in any order. A flat arched roller train over which the paper web is guided, and wide endless towels are provided around the stiffening means to press onto the paper web.

Furthermore, the machine according to the invention is characterized by a Longitudinal gluing device, the continuously rotating glue application roller when it comes to a standstill the machine from the paper web and the glue transfer roller without being shut down to become, is withdrawable.

Two pairs of paper feed rollers, their upper pulling bodies alternating come into effect, are arranged so that when passing through the paper web an upper tensile body can be lifted off with the stuck-on stiffening means.

Ultimately, a cover sheet sticking device is for sticking the Bottom reinforcement sheet placed on the bottom of the bag. Here is the gripper extension drum arranged to be adjustable with the cover sheet sticking device.

An embodiment of the combined machine according to the invention as well as the carrier bags produced thereon by the process are shown in the drawing shown. It shows F i g. 1. a schematic side view of the machine according to of the invention, FIG. 1 a is a partial side view according to F.i g. 1 of the machine, where the stiffening agents run off the roll, F i g. 2 a section of the paper web, in which the stiffening means lie next to each other, Fig. 3 the upper part of the Carrying bag in a schematic representation as a piece of hose, in which the stiffening means with the perforations and incisions as well as the fold of the carrier bag are recognizable, F i g. 4 a carrier bag with a bottom, perforated reinforcement straps like the one above Part from the machine is laid out, F i g. 5 and 6 a carrying case from the The process of closing can be seen in FIG. 7 and 8 a carrying case in a closed position State, F i g. 9 shows a side view of the gluing device, FIG. 10 is a plan view the gluing device according to FIG. 9, fig. 11 is a side view of the gluing device for longitudinal gluing, F i g. 12, a top view of the gluing device for longitudinal gluing according to FIG. 11.

According to FIG. 1, the paper roll from which the paper web 2 runs off for the carrier bags 1 to be produced is designated by 2 a. The paper web 2 is deflected by a deflection roller 3 and guided into a gluing device 4. This consists of the glue container with 4'a Leimübertragwälze 4 b and 4 c as well as the glue application roll storage in adjustable brackets 4 rl. The applicator roller 4 c is mounted so that it can be lifted off, so that it can be lifted off the glue roller 4 b and the paper guide roller 5 when the machine is at a standstill. By means of a separate drive 4 e via freewheel gear 4 f, the glue roller 4 b is moved on while the machine is at a standstill, so that the synthetic resin glue always remains in motion and cannot stick to the glue roller 4 b and the stripping elements (cf.Fig. 9 and 10).

Above the gluing device 4 there is a stacking device 6 for stacking and feeding the stiffening agent. The stiffening means 17 are guided by a feeder device 8 - in this case a pneumatic suction device - between transport rollers 9 and up and down transport rollers 9 a and aligned by the stops 10, which are controlled by the curve 10 a via lever and roller 10 b Tactically taken over by the transport rollers 9 a and fed to the incoming paper web and glued on. Subsequently arranged pressure rollers 9 b, which are also controlled, press the stiffening means? onto the paper web so that it sticks quickly. Additional belt guides can also be arranged above the transport rollers 9.

In the further course of the paper web 2 passes with the glued on Stiffening means 7 a large deflecting roller 12 on the outer periphery of two wide endless belts 11 for pressing the paper web 2 against the stiffening means 7 running along are arranged.

The supply of the stiffening agent? to the paper web 2 (see F i. g. l a) can also take place of the roller 7 a. In order to be able to apply the cardboards 7 safely, they are pre-perforated by the perforating knife 7c and only separated from the cardboard web 7a and transported on at the moment of application to the paper web 2 by transport rollers or tear-off bodies 9a.

In the further course of the paper web 2 with the reinforcement cardboard 7, as already described, guided around a roller 12 of larger diameter and through belts 11 or the like kept under pressure; it goes through the hole punching device 13, where the holes for attaching the risers are punched and touches the Creasing device 14, the creasing at 45 °, which is necessary for the exact closing of the Carrying bag 1 are necessary to be attached. In the slot station 15 are cut the slits in the paper web 2, through which in the finished carrier bag 1 the handles are pulled when closing the opening. .

The paper web 2 subsequently arrives at a roller train 16, which describes a large arc, so that the glued-on cardboard 7, not too be sharply curved in order to detach from the paper web 2. Also above the rolling mill 16, pressure belts 17 are arranged which firmly attach the cardboard 7 to the paper web 2 to press.

After the roller train 16, the longitudinal gluing device 18 is attached, with which the longitudinal glue strip is brought onto the paper web 2 in order to glue the gusseted tube formed from the paper web 2 around a shaped sheet 19.

The longitudinal gluing device consists of the glue box 18 a, glue disc 18 b and glue application disc 18 c. This longitudinal gluing device is also set up in such a way that the glue discs continue to run while the machine is at a standstill. For this purpose, the glue application disk 18 c is lifted off the glue roller 18 b and the paper web 2 by a magnet 18 d via eccentrically mounted toothed segments 18 f and lever 18 g. The glue discs 18 b and 18 c are moved on by a separate motor 18 e via freewheel gears 18 h (cf. FIGS. 11 and 12 in this regard).

Two pairs of draw rollers 20, 21 pull the tube or paper web 2 in front. The distance between the two pairs of draw rollers 20, 21 is greater than the greatest width of the reinforcement cardboard 7. Due to the thickness of the reinforcement cardboard 7, the tube in the area of the reinforcement cardboard is considerably thicker than the rest of the paper tube. The paper web 2 or the hose is drawn irregularly when the paper feed rollers 20, 21 run over the reinforcement cardboard 7, and this creates an obstacle to the formation of the hose. To solve these difficulties, the upper pulling body 20 or 21, which is just being passed by the reinforcement cardboard 7, is raised, so the train is always on the paper web 2. The pulling rollers 20 and 21 are lifted off by cam disks 20 a via Zahnradset elements 20 b and 20 c and rollers 20 d. The rollers 20 d lift the bearing blocks, in which the pull rollers are mounted, alternately from the paper web.

In the further course of the paper tube 2 is cut into the desired tube lengths by a rotating knife 22 and placed in a known manner on a large bottom-laying cylinder 23, the bottom, glued, folded and closed.

The carrier bags 1 (cardboard-like) produced according to the method are fed via transport rollers or belts to a gripper drum 124, placed in flakes on a transport cloth 25, pressed on by a second upper transport cloth 26 and transported onto a depositing table 27 .

Claims (14)

Claims: 1. A method for producing carrier bags which lie flat when folded and have gussets and a block bottom are made of paper or a similar material Cardboard or similar stiffening means is reinforced, which in flap form inward folded in opposite directions to form a folding floor so .that .they lie on top of each other, whereby the lower flap has an or several handles made of twine, string or the like. Carries the hand by one or several slots, which are arranged in the upper flap, are inserted can, where- by the carrier bag 3n closed state box shape is kept, d a .d u r c h .g e - indicates that i is the continuously moving paper web is glued, two adjacent stiffening agents are fed to the paper web, aligned and lying next to each other at the appropriate distance with the id continuous Turn the paper web glued over, the paper web with the stiffeners perforated, underneath 45 ° grooved, slotted, glue for gluing in the longitudinal direction of the paper run applied to the tube and then folded the sheet to form the side-gusseted tube in order to then be separated into the corresponding sections in the carrying bag, on what the bottom laid, seamed; glued and sealed, if necessary through a soil cover sheet is reinforced. 2. Machine for carrying out the method for producing carrier bags which lie flat in the folded state and are provided with gussets and a block bottom, according to claim 1, characterized by the combination of the following features: a) a paper handling (2a), b) a gluing device (4, 4a, 4b, 4c, 4d) for the cut, optionally for the stiffening means (7) running off the roll (7a), c) a positioning device for the stiffening means (7) with alignment stops (10, 10 a, 10 b ), if necessary, a cutting device to bring them onto the paper (2) running through them and to press and glue them through pressure elements (9, 9 a, 9 b) , d) a deflection cylinder (12) with pressure element (11) for pressing: the Paper web (2) .auf the stiffening means (7), e) a hole punching device (13) for punching the holes for the cord of the handles, f) a creasing device (14) for attaching the diagonal folds as a means for easy closure ießen or opening, g) a slot device (15) for making the necessary slots in the upper cover flap to pull the cord handles through, h) a roller train (16) with endless pressure cloths (17) to keep the stiffening means (7) in the paper web (2) to hold, i) a gluing device (18, 18 a, 18 b, 18 c, 18 d, 18 e) for applying the longitudinal glued seam, j) a tube- forming device (19) for forming the side-gusseted tube, k) two pairs Paper feed rollers (20, 21) that pull the gusseted tube or the paper web (2) into the machine, D a cutting device (22) for separating the continuous paper web (2) in a length required for a carrier bag (1) is, m) a bottom-laying cylinder and folding cylinder (23) for forming a block bottom, n) a further leaning device (23 a) _ for gluing the bottom part, o) optionally a cover sheet sticking device (29) for applying a bottom reinforcement sheet, p) a sliding one Gripper delivery drum (24) and stacking device (25, 25a, 26, 27) for depositing the finished carrier bags (1). 3. Machine for the production of carrier bags with gusseted and block bottom according to Proverb 2, characterized in that that the glue application roller (4 c) for the stiffening means (7) when the Machine from the paper web (2) and the glue transfer roller (4 b) without stopping the same (4b) can be lifted. 4. Machine according to claim 2 and 3, characterized in that that the supply of the two stiffening means (7) simultaneously by mechanical or pneumatic means (8) takes place. 5. Machine according to claim 2 to 4, characterized by movable stops (10, 10a, 10b) for aligning the supplied stiffening means (7) and up and down transport rollers (9, 9a, 9b) for their takeover. 6. Machine according to one of claims 2 to 5, characterized by devices, to pull the stiffening means (7) off the roll (7a) and perforate them, and by tear-off body (9 a), possibly knife or the like. To them when feeding to be separated from the paper web (2) and glued to the web (2). 7. Machine according to one of claims 2 to 6, characterized in that for pressing the stiffening means (7) onto the paper web (2) uniabgoing pressure rollers (9, 9a, 9b) or endless pressure belts are provided. B. Machine after One of Claims 2 to 7, characterized in that .that for guiding .the paper web (2) a diverting roller (12) of large diameter and further endless cloths (11) are arranged are to the paper web (2) and the stiffening means (7) under a constant To hold contact pressure. 9. Machine according to one of claims 2 to 8,! Characterized in that @ That the devices for punching (13), grooves (14) or slots (15) or tabs are arranged in any order. 10. Machine according to one of the claims 2 to 9, characterized in that a flat arched roller train (16), over which the paper web (2) is guided, and wide endless towels (17) are provided are to .die stiffening means (7) on the paper web (2). to push open. 11. Machine according to one of Claims 2 to 10, characterized by -a longitudinal gluing device, whose constantly rotating glue application roller (18 c) when the machine is shut down the paper web (2) and the glue transfer roller (18 b) without being stopped to become, is withdrawable. 12. Machine according to one of claims 2 to 11, characterized characterized in that two pairs of paper feed rollers (20, 21), the upper pulling body alternately come into effect, are arranged in such a way that when passing through of the paper web (2) with the stiffening means (7) stuck on, an upper one in each case Tensile body can be lifted off. 13. Machine according to one of claims 2 to 12, characterized characterized in that a cover sheet, gluing device (29) for gluing the bottom reinforcement sheet is arranged on the bottom of the bag (1). . 14. Machine according to one of Claims 2 to 13, characterized in that the gripper, delivery drum (24) with the cover sheet gluing device (29) is adjustable. Considered publications: German Patent Specifications No. 742 317, 903 060; German Auslegeschrift No. 1123 549; German utility model number: 1732 308; French Patent No. 1120408; U.S. Patent No. 2,586,514.