EP0046509A2 - Method and apparatus for manufacturing sheets with containing pockets - Google Patents

Abstract

The invention relates to a method and a device for creating album pages with pockets. Two film webs are connected to each other in a line and insert pockets are punched out of them. The punching tool punches out the pockets, each consisting of a double film with a line-connected edge, in the arrangement provided for the album sheet and holds them in this arrangement. In the meantime, the album sheet has been applied with an adhesive at the places provided for the pockets. The album sheet and the insert pockets, which are held in place by vacuum, are brought into contact, so that the connection between the pockets and the sheet takes place.

Description

The invention relates to a method for the production of sheets, in particular album sheets, with one or more insertion pockets of film material glued thereon in a predetermined arrangement, wherein the film material is along predetermined lines, each of which, when placed on the album sheet, has at least one edge of the area to be attached to the sheet Insert pockets correspond, provided with an adhesive and punched out the appropriate pockets from the film material according to arrangement and dimensions and glued to the sheet. contraption

Furthermore, the invention relates to one for the automatic production of insert pockets made of film material glued sheets, with devices for feeding sheet-like film material, devices for the linear application of an adhesive to the sheet-like film material, and devices for punching out pieces of film from the sheet-like film material and sticking the same to the sheet.

In the device of this type known from DE-OS 2 332 541, adhesive is applied to a film web along predetermined, continuous lines in the web direction and the side of the film web provided with adhesive is pressed against the sheet to be glued while simultaneously punching out the film sheets forming the pockets that only the punched foil sheets are glued to the sheet. The insert pockets thus formed consist of a cover sheet made of foil material and the album sheet, which is usually made of paper, itself as the rear wall. In many cases, however, to protect the objects to be placed in the pockets, it is not sufficient to cover them only with foil material on the top. In addition, with the previously known method of working, it is hardly possible in practice to regulate the contact pressure of the film provided with adhesive lines against the album sheet over the entire area in such a way that all punched-out film sheets adhere reliably to the album page, but no adherence of the film remaining during punching Waste path and no annoying adhesive deposits occur.

The object of the invention is to provide a method and a device of the type mentioned at the outset which enable rapid and reliable automatic production of sheets with insert pockets whose top and bottom sides consist of film material.

To solve this problem, the method mentioned at the outset is characterized in that two are placed one on top of the other Connects films along the predetermined lines to form a double film, from the linearly connected double film, punch out the insert pockets required for the sheet with at least one linearly connected edge, which holds the punched insert pockets in their given position during punching, corresponding to the predetermined arrangement on the sheet, on the Apply adhesive to the sheet in each of the areas to be bonded and bring the sheet provided with adhesive into alignment with the areas to be bonded with the associated, fixed insert pockets. In this method, the insert pockets to be glued are made of double film material and, after they have been punched out of this double film material, held in the predetermined position in which they are subsequently to be applied to the sheet. In the meantime, the sheet is provided with adhesive in the areas to be glued, and then the insert pockets are brought into contact with the sheet, so that the insert pockets stick to the intended areas. The insert pockets are not necessarily glued to the carrier sheet only along one edge, but, depending on how the adhesive has been applied to the sheet, they can be glued to the sheet over the entire surface of the insert pocket, or along its entire surface Circumference. The adhesive connection of the pocket with the album sheet can thus be adapted to the desired requirements.

One possibility of the method to be carried out provides that adhesive-coated adhesive is applied to the area in each case at one edge, in each case with an area to be glued with an insert pocket. It is not necessary for the entire edge of the insert pocket to be glued to the sheet from one edge to the other edge, it is sufficient if the edge is connected to the sheet in a partial area.

It proves to be advantageous to feed the film as film sheets drawn one from the other, lying on top of one another, and to wet at least one of the supplied film webs in the area provided for the linear connection with adhesive or a solvent softening the film material, and then to press the film webs against one another. The removal of rolls leads to a particularly economical and easy-to-handle implementation of the method according to the invention, so that a quick and continuous production of the double film material for the insert pockets is ensured.

When punching out in the linearly connected double film, the die cuts running in a first direction and then the die cuts meeting these at the corners of the insertion pockets and running in a different direction are preferably made first. This ensures that the corner areas are cut out cleanly and the film material is not subjected to any bruises that would cause minor damage.

The sheet provided with adhesive is preferably guided under the inserted pockets and with it with Adhesive areas pressed against them. This provides a reliable connection between insert pockets and sheets and it is not necessary to give the punch tool an additional movement in order to feed the insert pockets to the sheet.

A preferred possibility is that the punched-out pockets are held in place by air negative pressure and are lifted after pressing the pockets against the areas of the sheet provided with adhesive. This ensures that the insert pockets are held in place in a simple and reliable manner after punching out.

The album sheet for use by stamp collectors is printed optically in the areas to be stuck with insert pockets in order to identify the stamp to be accommodated in the insert pockets. When using an essentially transparent adhesive and transparent foils for the insert pocket, the pressure applied under the insert pocket can be seen, so that information about the stamp to be inserted is supplied to a stamp collector.

Furthermore, the invention describes a device of the type mentioned at the outset for achieving the object, which is characterized in that devices for applying adhesive to the areas of each sheet to be glued, arranged in a gluing station (L), devices for feeding two sheets of film into a connecting station, _u in this arranged a ftragvorrichtungen to the line-shaped application of adhesive or a film web adhesive softening liquid on the side facing the other sheet side at least one web of film pressing devices for pressing together the linear portions to be joined of the wetted sheet webs arranged in a punching station replaceable punching tools for punching Insert pockets with at least one line-connected edge from the double film web, suction devices arranged in the punching station for the intermediate fixing of the punched-out pockets in their position relative to one another during the punching, which corresponds to the predetermined arrangement on the sheet, devices for periodically pulling off the double film waste web remaining during the punching from the S _t anzstation, in the punching station arranged lifting devices for aligned mating overlaying the adhesive-coated areas of the sheet and the allocated, held by negative pressure air pockets, and means for releasing the negative air pressure on the glued to the sheet insertion pockets

The device enables the continuous production of album sheets by providing the album sheets with an adhesive application in a gluing station in the areas in which the insert pockets are to be attached. The insertion pockets are manufactured in that two film webs brought up are connected to one another in a connecting station. This is preferably possible by applying a chemical that slightly dissolves the surface of the films, and then pressing the two films together. The surface softening of at least one of the foils then connects the two foils to one another. Out. The inserted pockets are punched out of these connected foils, the linear connection forming an edge of this inserted pocket. The insertion pockets are thus formed from two small films lying one against the other, which are preferably connected to one another along one edge by the linear application. The remaining film waste webs are drawn off and can be shredded in a directly connected cutting device. These shredded film residues then become one of the devices upstream film extruder returned, melted in it and extruded again to a film web.

A lifting device is provided in the punching station. This lifting device guides the album sheet, which, as mentioned above, has an adhesive application, together with the associated insertion pockets, so that the insertion pockets come to rest against the adhesive application points. Since the pockets have been held in their position by negative air pressure in order to be glued to the sheet, the negative air pressure must be released after the connection between the album sheet and the pockets.

In order to keep the space requirement of the device according to the invention small, a rotary table can be provided for the cyclically aligned movement of the sheets through the gluing station and the punching station. The continuous movement of the sheets through the stations is thus made possible in a confined space.

Preferably, an exchangeably arranged gluing template is provided in the gluing station with gluing stamps corresponding to the areas of the sheet to be glued, further devices for wetting the gluing stamp with adhesive as well as pressing devices for aligning the gluing stamp wetted with adhesive against the areas of the sheet to be glued. Such a gluing template, which corresponds in the arrangement of the gluing stamp to the arrangement of the punched-out and held insertion pockets, enables complete gluing of the album sheet in the desired manner in one work step.

The linear order of an adhesive bond he possible material between the film webs can be realized by one or more wetting rollers with their outer edge resting against at least one film web, which are each rotatably mounted about axes of rotation running transversely to the direction of movement of the film web and wet the adjacent film web linearly in their longitudinal direction. The material to be applied lies on the circumference of these wetting rolls and is then transferred from these to the film web. This ensures continuous and even wetting, while at the same time ensuring that the film webs slide smoothly, since they can also run along on rollers when wetting. To adapt to the circumstances, the wetting rollers can be designed to be adjustable.

The wetting rollers each cooperate favorably with a wetting roller which is immersed in a bath containing an adhesive or a liquid which softens the film web. So wetting rolls run on one side and on the film web, on the other side on a wetting roller, which is used to transfer the connecting material, namely adhesive or a liquid, through which the film web adheres, to the wetting rolls. It can prove to be advantageous that the wetting rollers interact with a metering device, which metered the adhesive or the liquid that can soften the film webs in the desired manner.

The punching devices preferably have an exchangeable punching tool for producing the punching cuts running in a first direction and a punching tool, preferably integrally connected thereto, for producing the punching cuts running in a different direction. For example, the punching is first in the longitudinal direction of the film web and then with the aid of the further punching tool Punching of the film web in the transverse direction is possible, which ensures particularly accurate and trouble-free punching out of the insert pockets. The cutting blades of the punching tools are expediently designed in such a way that the punching cuts that meet at the corners of the insertion pockets intersect somewhat. In this way, very precise and clean corner cuts can be achieved, whereby the film is not stretched at the corner area either.

In order to enable a better detachment of the separated insertion pockets from the rest of the film web, the last punching tool in the conveying direction of the film webs can have a stamp-like protruding elastic contact block between the cutting blades producing the punching cuts of an insertion pocket, with an end surface slightly protruding relative to the cutting edges of the cutting blades and at least one have arranged in this, connected to a suction device suction opening. The slightly protruding end surface serves to release the insert pockets from contact with the cutting blades after the cut. The insertion pockets are held on the end faces of the contact blocks by the suction opening.

In order to achieve universal use and ease of use of the machine, the cutting blades, each associated with an insertion pocket, together with the interposed contact block form a separately exchangeable tool element. Thus, with the replacement of a single component, the entire device of a new arrangement of pockets can be adapted to the album page. In this case, the cutting blades each associated with an insertion pocket, together with the abutment block in between, can advantageously be placed in parallel on a tool base plate and / or form an adjustable fastening element transversely to the front direction of the film webs.

For the workflow of the machine, it has proven to be advantageous to provide devices for the aligned application of the sheet provided with adhesive against the insertion pockets held on the contact blocks on the underside of the punching tool by air vacuum. It facilitates the structural design if the sheet is guided under the pockets that are held on the punching tool and then lifted so that the adhesive applications on the album sheet come into contact with the pockets.

In order to design the device for different arrangements of insert pockets on album sheets, it has proven to be advantageous to arrange the devices for linear wetting of the film web so as to be adjustable in the transverse direction to the linear wetting areas to be produced by them. Furthermore, the blades are slidably arranged in the punch. It is also favorable in this case if the gluing stamps are fastened on a base plate so as to be adjustable in the transverse and / or longitudinal direction. In this way, the device can be changed over quickly and easily to produce a different sheet type. It is therefore not necessary to provide separate punching tools, special gluing templates and special application devices for the adhesive on the film webs for each sheet type. The process steps or the device features which relate to the production of the double film are unnecessary in the context of the invention if the double film is already ready for further processing in the desired configuration.

• Fig. 1 eine schematische Aufsicht auf die Vorrichtung,
• Fig. 2 eine schematisierte perspektivische Ansicht des Verlaufes der Folienbahn durch die Verbindungsstation und die Stanzstation,
• Fig. 3 eine schematische Seitenansicht eines Stanzwerkzeugs und
• Fig. 4 eine schematische Seitenansicht der Beleimungsstation.

In the following a preferred embodiment of the device is further explained with reference to the accompanying drawings. It shows

• 1 is a schematic plan view of the device,
• 2 is a schematic perspective view of the course of the film web through the connecting station and the punching station,
• Fig. 3 is a schematic side view of a punch and
• Fig. 4 is a schematic side view of the gluing station.

The device shown in the figures has a turntable 9 with three sheet carriers 33 arranged at equal circumferential intervals, each of which is provided with devices for the aligned holding of a sheet 14 to be stuck with insertion pockets. The turntable 9 is rotated clockwise by 60 ° by a drive device, not shown, so that each sheet carrier 33 has completed one revolution after every six working cycles and returned to its starting position.

In the illustration shown in FIG. 1, a feed station Z, a gluing station L, two interim stations, a punching station S and a delivery station A are provided in succession on the rotary table in the clockwise direction. In the feed station Z, a sheet 14 from a feed magazine 31 is applied to the adjacent sheet carrier 33 in an aligned manner. At the next work cycle, this sheet carrier 33 is pivoted into the gluing station L, in which a gluing template 10 is arranged above the sheet carrier 33 and carries a plurality of gluing stamps 11. The gluing stamps 11 are expediently fastened on a base plate so as to be adjustable relative to one another in the longitudinal and transverse directions. In the embodiment shown, the gluing stamps 11 are provided on their end surface facing the sheet carrier 33 with a porous, volume-compressible glueing pads. A gluing roller 36, which is movably arranged next to the gluing template 10, is moved over the gluing pad of the gluing stamp 11 during the work cycle, in which there is no sheet carrier 33 in the gluing station L, in order to wet it with adhesive. The gluing roller 36 is also provided with adhesive during its movements wetting the gluing pad from an adhesive bath 37. The gluing template 10 with the gluing stamps 11 is pressed against the sheet 14 by a lifting device (not shown) during the work cycle in which a sheet carrier 33 is located in the gluing station L such that a narrow adhesive strip 16 is applied to the sheet 14 in each of the areas to be glued is applied, which preferably extends along the edge at which the line-shaped connecting edge is located after the insertion pocket has been stuck on. For this purpose, the gluing stamps 11 are each arranged on the gluing template 10 in such a way that they face the areas of the underlying sheet 14 to be glued.

In the following work cycles, the sheet carrier 33 is then pivoted successively from the gluing station L via the two interim stations into the punching station S.

A punching device is arranged in the punching station S, to which two film webs 3 and 4 lying one above the other are fed in steps. The film webs 3 and 4 are drawn off from corresponding film rolls 1 and 2 and first passed through a connecting station V, in which a plurality of wetting rolls 5 are arranged, each of which is rotatably mounted on an axis of rotation running transversely to the conveying direction of the film webs 3 and 4, and with its peripheral edge bear against one of the film webs 3 or 4. The wetting rollers 5 are adjustable on their axis of rotation transversely to the film web 3 and receive on another part of their circumference a liquid or adhesive softening the material of the film web from a wetting bath 6. The wetting rollers 5 thus produce on the film web 3 in the longitudinal direction extending wetting strips in which the Film material is adhesively softened. The film webs 3 and 4 then pass through a pressing device 7 formed in the embodiment shown by two rollers, which presses the film webs 3 and 4 against one another and produces linear connecting regions 8 in which the film webs 4 and 3 are permanently connected to one another by adhesion of the wetting strips. The thus produced, linearly connected double film is then fed to the punching station S, in which the necessary insertion pockets are punched out by means of the punching device.

When the double film is fed to the punching station, the film preferably runs through a pair of pulling rollers which ensure uniform removal from the film rolls 1 and 2. Behind the pair of pull rollers, a hanging loop is formed with the connected double foils, since the removal by the punching station 11 is, however, clocked in sections. The loop formation is intended to enable the transition of the double film 8 from continuous movement to index movement. It is possible to provide a dancer roller in the loop.

In the punching station S, the individual insertion pockets are punched out with the aid of the punching tool, as described below, and placed on the sheet 14. The film waste web 25, which now has punch holes 30, is wound on a roll. It can be reprocessed into film material in recycling.

The punching station is shown in Fig. 3. It has a counter pressure plate 42 below the film web 3, which serves as an abutment for the cutting blades 19. The cutting blades 19 are embedded in a plate 21 and supported on an upper pressure plate 41 which can perform an up and down movement for the punching process. The cutting blades 19 are arranged between contact blocks 20 which have elastic parts projecting beyond the cutting edges of the cutting blades 19. A distance is provided between contact blocks 20 and cutting blades 19, which avoids contact between these two parts, so that contact blocks 20 do not electrostatically land due to friction on cutting blades 19. A suction chamber 39 is provided behind the contact blocks 20 and is connected to a suction device 28. A negative pressure can be created in the suction chamber 39 via the suction device 28. The contact blocks 20 are porous with suction channels 29 formed so that an air flow through the contact blocks 20 into the suction chambers 39 occurs when a vacuum is present. The suction chamber 39 is closed on the outside with a sealing ring 40, so that the air entry into the suction chambers occurs only via the contact blocks 20.

The punching station works as follows: In a first step, the punching tool is lowered so that the cutting blades 19 cut into the film. It is preferably provided that in the first half in the direction of movement of the film web 3 the film web only receives longitudinal cuts through the cutting blades 20, while in the second half the cutting blades 19 are arranged transversely to the direction of movement of the film web 3 so that they impart cross sections to the film web. After lifting the pressure plate 41 with the cutting blades 19 attached to it, the film web 3 is moved forward by a predetermined distance, so that the associated cross sections are now carried out by the transverse cutting blades 19 at the points at which the longitudinal cuts were previously carried out that with rectangular pockets to be punched out first the two long sides and then the two associated transverse sides are punched. Thus, after this second step in the right half of the punching tool in FIG. 3, the finished insertion pockets are punched out. At the same time, a vacuum is generated in the suction chamber 39 via the suction device 28, with the aid of which the punched-out pockets are held on these contact blocks via the suction channels 29. The elasticity of the contact spots serves to strip the punched material from the cutting blades, but at the same time the bags are to be held with the help of the negative pressure.

In a third step, the sheet carrier 33 is now with the sheet 14 mounted thereon guided under the punching tool, so that the insertion pockets held by the negative pressure come to rest over the adhesive applications which were applied to the sheet 14 in the gluing station. The sheet carrier 33 with the sheet 14 supported thereon and the pockets held by negative pressure are now brought together, preferably by lifting the sheet carrier 33. The adhesive applicators 16 now touch the pockets. At the same time, the suction device 28 is switched off, so that the negative pressure which fixes the pockets on the contact blocks is released and the insert pockets are thus released from the contact blocks 20. The adhesive application 16 on the sheet 14 now holds the insert pockets so that they are fastened in the desired places at the intended locations. The sheet carrier 33 is then pivoted further, so that the punching tool can start again in a new cycle with the first step. Since the insertion pockets in the rear section of the film web 3 are also punched out in the front part of the film web 3 at the same time as the first work step in each cycle, the operative workflow provides that the punching tool is lowered alternately and then the sheet carrier 33 with the one lying thereon Sheet 14 removes the pockets from the punch. This is followed by a further lowering of the punching tool and a further removal of the insert pockets.

The sheet 14 provided with the insertion pockets is fed by the next working cycle of the turntable 9 to the delivery station, in which it is placed in a removal magazine 32.

Claims (14)

1) Process for the production of sheets, in particular album sheets, with one or more insertion pockets of film material glued thereon in a predetermined arrangement, wherein the 1. Provides film material along predetermined lines which, when the film material is placed on the album sheet, correspond to at least one edge of the insert pockets to be attached to the sheet, with an adhesive and 2. cut the required bags from the film material according to the arrangement and dimensions. punches and glued to the sheet, characterized in that one 3. connects two superimposed foils along the predetermined lines to form a double foil, 4. from the linearly connected double film, the insertion pockets required for the sheet with at least punches out a line-connected edge, 5. holds the punched-out pockets in their given position during punching, corresponding to the predetermined arrangement on the sheet, 6. Apply adhesive to the sheet in each of the areas to be glued and 7. brings the sheet provided with adhesive while aligning its areas to be glued onto the assigned, held insertion pockets with them in adhesive contact. 2) Method according to claim 1, characterized in that adhesive is applied to the sheet in each case at an edge of each area to be glued with an insertion pocket. 3) Method according to claim 1 or 2, characterized in that at least one of two sheets of film pulled off rolls is wetted in the areas provided for the linear connection with adhesive or a solvent softening the sheet material and the sheet is then pressed against one another. 4) Method according to one of claims 1 to 3, characterized in that when punching in the linearly connected double film, first the die cuts running in a first direction and then the die cuts meeting these at the corners of the insertion pockets and running in a different direction are made . 5) Method according to claims 1 to 4, characterized in that one leads the sheet provided with adhesive under the fixed insertion pockets and presses with its areas provided with adhesive against them. 6) Method according to one of claims 1 to 5, characterized in that the punched-out pockets are held by negative air pressure and this is canceled after pressing the pockets against the areas of the sheet provided with adhesive. Device 7) for the automatic production of sheets glued to insert pockets made of foil material, with 1, devices (1, 2) for feeding sheet-like film material, 2. Devices (5, 6) for the linear application of an adhesive to the sheet-like film material, and 3. Devices (17) for punching out pieces of film from the sheet-like film material and sticking the same to the sheet (14), characterized by: 4. devices (10, 11) arranged in a gluing station (L) for applying adhesive to the areas of each sheet (14) to be glued, 5. Devices (1, 2) for guiding two film webs (3, 4) into a connecting station (V), 6. application devices (5, 6) arranged in this for the linear application of adhesive or a liquid softening the film web to the side of the other film web facing at least one film web (3, 4), 7. pressing devices (7) for pressing together the regions (8) of the wetted film webs (3, 4) to be connected in a line, 8. interchangeable punching tools (17) arranged in a punching station (S) for punching out insert pockets with at least one linearly connected edge from the double film web, 9. in the punching station (S) arranged suction devices (28, 29) for the intermediate fixing of the punched out Insert pockets in their position relative to one another during punching, corresponding to the predetermined arrangement on the sheet (14), 10. Devices for the intermittent removal of the double film waste web (25) remaining during the punching from the punching station (S), 11. arranged in the punching station (S) lifting devices for aligned positioning of the areas of the sheet (14) provided with adhesive and the associated insertion pockets held by air vacuum, and 12. Devices for releasing the negative air pressure on the insertion pockets glued onto the sheet (14). 8) Device according to claim 7, characterized by a rotary table (9) for the clockwise aligned movement of the sheets through the gluing station (L) and the punching station (S). 9) Device according to claim 7 or 8, characterized by a in the gluing station (L) interchangeably arranged gluing template (10) with preferably preferably arranged thereon, the glueing stamps (11) corresponding to the areas of the sheet (14), devices (36) for Wetting the gluing stamp (11) with adhesive and pressing devices for aligning the gluing stamp (11) wetted with adhesive against the areas of the sheet (14) to be glued. 10) Device according to one of claims 7 to 9, characterized by one or more wetting rollers (5) each lying with their outer edge against a film web (3, 4), which are each rotatably mounted about axes of rotation extending transversely to the direction of movement of the film web (3, 4) and wet the adjacent film web (3, 4) linearly in the longitudinal direction. 11) Device according to claim 10, characterized in that the wetting rollers (5) are adjustable in the transverse direction to the film web (3,4) and each cooperate with a wetting roller which in a glue or a liquid softening the film web (3,4) containing bath (6) dips. 12) Device according to one of claims 7 to 11, characterized in that the punching devices an exchangeable punching tool (17) for producing the punching cuts running in a first direction and a punching tool preferably integrally connected thereto for producing the punching cuts running in another direction exhibit. 13) Device according to one of claims 7 to 12, characterized in that the last punching tool in the conveying direction of the film webs (3, 4) has a stamp-like projecting elastic contact block (20) with a relative between the cutting blade (19) producing the punching cuts of an insert pocket has a slightly projecting end face to the cutting edges of the cutting blades (19) and each has at least one suction opening (29) arranged therein and connected to a suction device (28). 14) Device according to one of claims 7 to 13, characterized in that in each case the cutting blades (19) assigned to an insertion pocket together with the interposed contact block (20) are an exchangeable and preferably parallel and / or transverse to the conveying direction of the film webs (3, 4 ) form an adjustable tool element.

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