ITMI20131019A1 - GLUE UNIT WITH ADJUSTABLE COMBINATION DEVICE IN A SPREADER-LAMINATOR, RELATIVE EMBOSSER-LAMINATOR AND METHOD OF ADJUSTMENT OF ACCOMPANYING - Google Patents

GLUE UNIT WITH ADJUSTABLE COMBINATION DEVICE IN A SPREADER-LAMINATOR, RELATIVE EMBOSSER-LAMINATOR AND METHOD OF ADJUSTMENT OF ACCOMPANYING

Info

Publication number
ITMI20131019A1
ITMI20131019A1 IT001019A ITMI20131019A ITMI20131019A1 IT MI20131019 A1 ITMI20131019 A1 IT MI20131019A1 IT 001019 A IT001019 A IT 001019A IT MI20131019 A ITMI20131019 A IT MI20131019A IT MI20131019 A1 ITMI20131019 A1 IT MI20131019A1
Authority
IT
Italy
Prior art keywords
glue
roller
laminator
approach
embosser
Prior art date
Application number
IT001019A
Other languages
Italian (it)
Inventor
Giovanni Gambini
Original Assignee
Gambini Int Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gambini Int Sa filed Critical Gambini Int Sa
Priority to IT001019A priority Critical patent/ITMI20131019A1/en
Priority to EP14173088.7A priority patent/EP2815815B1/en
Priority to ES14173088.7T priority patent/ES2636796T3/en
Priority to RS20170781A priority patent/RS56132B1/en
Publication of ITMI20131019A1 publication Critical patent/ITMI20131019A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
    • B05C1/0878—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the pressure applied between two rollers, e.g. between the coating roller and a backing roller or between the coating roller and a dosing roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/12—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being fed round the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0787—Applying adhesive

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Coating Apparatus (AREA)

Description

GRUPPO COLLA CON DISPOSITIVO DI ACCOSTAMENTO REGOLABILE IN UN GOFFRATORE-LAMINATORE, RELATIVO GOFFRATORE-LAMINATORE E METODO DI REGOLAZIONE DELL’ACCOSTAMENTO GLUE GROUP WITH ADJUSTABLE ADJUSTMENT DEVICE IN A EMBOSSER-LAMINATOR, RELATIVE EMBOSSER-LAMINATOR AND METHOD FOR ADJUSTING THE ADJUSTMENT

La presente invenzione si riferisce ad un gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, ad un relativo goffratorelaminatore e ad un metodo di regolazione dell’accostamento. The present invention refers to a glue unit with an adjustable approaching device in an embosser-laminator, to a relative embosser-laminator and to a method for adjusting the approach.

In generale i goffratori-laminatori per carta comprendono almeno un rullo goffratore, almeno un controrullo goffratore ed un gruppo colla comprendente un rullo di distribuzione della colla, un rullo dosatore della medesima colla ed un serbatoio di colla. In general, embossing-laminating machines for paper comprise at least one embossing roller, at least one counter-embossing roller and a glue unit comprising a glue distribution roller, a metering roller for the same glue and a glue tank.

Generalmente il rullo goffratore risulta essere da un lato in battuta con il controrullo goffratore, per goffrare almeno un velo di carta alimentata, e da un altro lato con il rullo di distribuzione per distribuire la colla sul medesimo velo di carta goffrato. Generally, the embossing roller is on one side in abutment with the embossing counter roller, to emboss at least one web of fed paper, and on the other side with the distribution roller to distribute the glue on the same web of embossed paper.

Il rullo dosatore in tali gruppi ha lo scopo di alimentare la colla sul rullo di distribuzione e per far ciò esso à ̈ sua volta accoppiato con la sua superficie esterna da un lato con un serbatoio di colla e da un altro lato con il rullo di distribuzione. The dosing roller in these groups has the purpose of feeding the glue onto the distribution roller and to do this it is in turn coupled with its external surface on one side with a glue tank and on the other side with the distribution roller. .

Grazie a tale accoppiamento di rulli, in cui il rullo dosatore à ̈ generalmente detto “retinato†e il rullo di distribuzione “cliché†, si procede a prelevare la colla dal serbatoio, detto anche “camera a racla†e a disporla sull’almeno un velo goffrato passante sul medesimo cliché. Thanks to this coupling of rollers, in which the dosing roller is generally called â € œretinatedâ € and the distribution roller â € œclickâ €, the glue is collected from the tank, also known as the â € œ doctor blade chamberâ € and a place it on at least one embossed veil passing through the same clichà ©.

Per una corretta applicazione della colla dal rullo di distribuzione al velo di carta disposto sul rullo goffratore à ̈ essenziale la regolazione della distanza di accostamento tra il rullo di distribuzione del gruppo colla e il rullo goffratore in acciaio, che si esprime in pressione di incollaggio. La distanza tra i rulli, dell’ordine di qualche centesimo di millimetro deve essere tale da consentire il passaggio del velo di carta in misura, dovendo lo stesso ricevere la colla tramite una leggera pressione, e varia in base al tipo di carta, al numero dei veli e alla necessità di distribuire più o meno colla. For a correct application of the glue from the distribution roller to the paper web arranged on the embossing roller, it is essential to adjust the approach distance between the distribution roller of the glue group and the steel embossing roller, which is expressed in gluing pressure. The distance between the rollers, of the order of a few hundredths of a millimeter, must be such as to allow the passage of the paper web in size, having to receive the glue by means of a slight pressure, and varies according to the type of paper, number of plies and the need to distribute more or less glue.

Per un ottimale funzionamento del goffratorelaminatore à ̈ essenziale che la distanza di accostamento sia regolata in modo preciso e che si mantenga costante durante il funzionamento della macchina. For an optimal functioning of the embosser-laminator it is essential that the approach distance is precisely regulated and that it remains constant during the operation of the machine.

Generalmente la distanza di accostamento à ̈ regolata manualmente attraverso l’uso di viti di regolazione poste lateralmente che lavorano su battute. Agendo su tali sistemi à ̈ possibile avvicinare il rullo di distribuzione al rullo goffratore in modo sufficiente con l’ausilio di comparatori. Generally the approach distance is adjusted manually through the use of adjustment screws placed on the side that work on the stops. By acting on these systems, it is possible to bring the distribution roller sufficiently close to the embossing roller with the aid of comparators.

Questi sistemi manuali dipendono necessariamente dall'abilità dell'operatore e dalla sua precisione soggettiva e non permettono pertanto di effettuare regolazioni identicamente riproducibili nel tempo. These manual systems necessarily depend on the skill of the operator and on his subjective precision and therefore do not allow to make adjustments identically reproducible over time.

Inoltre, un ulteriore inconveniente riguarda l’impossibilità di effettuare queste operazioni in sicurezza totale e soprattutto in macchina in movimento. Furthermore, a further drawback regards the impossibility of carrying out these operations in total safety and above all while the machine is in motion.

Altri sistemi noti, più avanzati, permettono di controllare la posizione del rullo di distribuzione tramite un controllo "in posizione", ma sono sistemi che richiedono una tecnologia avanzata e comportano costi elevati. Other known and more advanced systems allow to control the position of the distribution roller by means of an "in position" control, but these are systems that require advanced technology and involve high costs.

Scopo della presente invenzione à ̈ quello di realizzare un gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, un relativo goffratore-laminatore e un metodo di regolazione dell’accostamento che risolvano gli inconvenienti sopra citati. The purpose of the present invention is that of realizing a glue unit with an adjustable approaching device in an embosser-laminator, a relative embosser-laminator and a method of adjusting the approach which solve the aforementioned drawbacks.

Altro scopo della presente invenzione à ̈ quello di realizzare un gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, un relativo goffratore-laminatore e un metodo di regolazione dell’accostamento in grado di individuare ed intervenire nel caso di formazione accidentale di un accumulo di carta tra il rullo di distribuzione ed il rullo goffratore. Another purpose of the present invention is to provide a glue unit with an adjustable approach device in an embosser-laminator, a relative embosser-laminator and a method for adjusting the approach capable of identifying and intervening in the event of accidental formation of an accumulation of paper between the distribution roller and the embossing roller.

Un altro scopo della presente invenzione à ̈ quello di realizzare un gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, un relativo goffratore-laminatore e un metodo di regolazione dell’accostamento particolarmente semplici e funzionali, con costi contenuti. Another object of the present invention is to provide a glue unit with an adjustable approach device in an embosser-laminator, a relative embosser-laminator and a particularly simple and functional method of adjusting the approach, with low costs.

Questi scopi secondo la presente invenzione sono raggiunti realizzando un gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, un relativo goffratore-laminatore e un metodo di regolazione dell’accostamento come esposto nelle rivendicazioni indipendenti. These objects according to the present invention are achieved by realizing a glue unit with an adjustable approach device in an embosser-laminator, a relative embosser-laminator and a method for adjusting the approach as set forth in the independent claims.

Ulteriori caratteristiche sono previste nelle rivendicazioni dipendenti. Further characteristics are provided in the dependent claims.

Le caratteristiche ed i vantaggi di un gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, di un relativo goffratorelaminatore e di un metodo di regolazione dell’accostamento secondo la presente invenzione risulteranno maggiormente evidenti dalla descrizione seguente, esemplificativa e non limitativa, riferita al disegno schematico allegato come figura 1 di un goffratore-laminatore recante un gruppo colla con dispositivo di accostamento regolabile secondo l’invenzione, mostrato in alzata laterale. The characteristics and advantages of a glue unit with an adjustable coupling device in an embosser-laminator, of a relative embosser-laminator and of a method of adjusting the coupling according to the present invention will become more evident from the following description, which is exemplary and not limiting. referred to the schematic drawing attached as figure 1 of an embosser-laminator bearing a glue unit with adjustable approach device according to the invention, shown in side elevation.

Con riferimento alle figure, viene mostrato un lato di un goffratore-laminatore 100 recante un gruppo colla 10 provvisto di un dispositivo di accostamento regolabile 20. Il lato opposto, non mostrato, riprende gli stessi componenti. With reference to the figures, one side of an embosser-laminator 100 is shown carrying a glue unit 10 provided with an adjustable approaching device 20. The opposite side, not shown, incorporates the same components.

Secondo l’esempio realizzativo mostrato nella sopra citata figura 1 il goffratore-laminatore 100 comprende un rullo goffratore 120 e un controrullo goffratore 110, tra cui à ̈ rinviato almeno un velo di carta 101. According to the embodiment shown in the aforementioned figure 1, the embosser-laminator 100 comprises an embossing roller 120 and an embossing counter roller 110, between which at least one web of paper 101 is returned.

Il gruppo colla 10 comprende un rullo di distribuzione 12 della colla ed un rullo dosatore 13 della medesima colla. Con il termine colla si intende in generale una sostanza collante preferibilmente a comportamento fluido. The glue unit 10 comprises a roller 12 for distributing the glue and a metering roller 13 for the same glue. The term glue generally refers to an adhesive substance preferably with a fluid behavior.

In particolare, il rullo goffratore 120 à ̈ rispettivamente accoppiato lungo due differenti generatrici con il controrullo goffratore 110 per goffrare l’almeno un velo di carta 101 e con il rullo di distribuzione 12 che distribuisce la colla sull’almeno un velo di carta 101 goffrato. In particular, the embossing roller 120 is respectively coupled along two different generatrices with the embossing counter roller 110 to emboss the at least one web of paper 101 and with the distribution roller 12 which distributes the glue on the at least one web of paper 101 embossed.

Il rullo dosatore 13 Ã ̈ sua volta rispettivamente accoppiato lungo due differenti generatrici rispettivamente con un serbatoio 14 contenente colla per prelevare la colla e con il rullo di distribuzione 12 per alimentare la colla prelevata sul rullo di distribuzione 12. The dosing roller 13 is in turn respectively coupled along two different generators respectively with a tank 14 containing glue to pick up the glue and with the distribution roller 12 to feed the glue picked up on the distribution roller 12.

Il serbatoio 14 per la colla à ̈ costituito da una cosiddetta camera a racla, comprendente un corpo sagomato a “C†, atto a contenere la colla, il quale à ̈ disposto lateralmente lungo sostanzialmente tutto lo sviluppo del rullo dosatore 13. In particolare il corpo sagomato a “C†del serbatoio di colla 14 à ̈ delimitato alle estremità da due pareti laterali provviste all’estremità affacciata al rullo dosatore 13 di elementi a tenuta, quali ad esempio guarnizioni. Le pareti laterali si estendono infatti fino alla prossimità della porzione superficiale laterale del rullo dosatore 13, determinando lo sviluppo assiale del rullo dosatore 13 su cui viene distribuita la colla. The glue tank 14 consists of a so-called doctor blade chamber, comprising a â € œCâ € shaped body, suitable for containing the glue, which is arranged laterally along substantially the entire length of the dosing roller 13. In particular the C-shaped body of the glue tank 14 is delimited at the ends by two side walls provided at the end facing the metering roller 13 with sealing elements, such as gaskets. The side walls in fact extend up to the proximity of the lateral surface portion of the metering roller 13, determining the axial development of the metering roller 13 on which the glue is distributed.

Il dispositivo di accostamento regolabile 20 del gruppo colla 10 al rullo goffratore 120 comprende, su ogni lato, una slitta 21, costituita da una fiancata recante il rullo di distribuzione 12, che à ̈ applicata a sua volta su una fiancata fissa 11 del gruppo colla 10 mediante una o più guide lineari 22, orientate per consentire movimenti lineari di avvicinamento/allontanamento del rullo di distribuzione 12 rispetto al rullo goffratore in acciaio 120 in direzione ortogonale agli assi dei rulli, come schematizzato in figura dalla doppia freccia F. The device 20 for the adjustable approach of the glue unit 10 to the embossing roller 120 comprises, on each side, a slide 21, consisting of a side bearing the distribution roller 12, which is in turn applied to a fixed side 11 of the glue unit 10 by means of one or more linear guides 22, oriented to allow linear approaching / moving away of the distribution roller 12 with respect to the steel embossing roller 120 in a direction perpendicular to the axes of the rollers, as shown in the figure by the double arrow F.

Le guide 22 sono preferibilmente guide a basso attrito, quali ad esempio guide a ricircolo di sfere, per rendere il dispositivo di accostamento 20 più sensibile ai bassi carichi. The guides 22 are preferably low friction guides, such as for example ball recirculating guides, to make the approaching device 20 more sensitive to low loads.

Il rullo dosatore 13 e il serbatoio colla 14 ad esso associato sono a loro volta vincolati in modo amovibile alla slitta 21 attraverso una seconda fiancata 15. The metering roller 13 and the glue tank 14 associated with it are in turn removably constrained to the slide 21 by means of a second side 15.

Ciascuna slitta 21, che costituisce la fiancata del rullo di distribuzione 12 à ̈ azionata da un gruppo di comando 23 comprendente un attuatore regolabile 24, collegato ad una estremità mobile alla slitta 21 ed all’estremità opposta ad una cella di carico 25, fissa, che verifica in continuo il carico applicato. Each slide 21, which constitutes the side of the distribution roller 12, is operated by a control unit 23 comprising an adjustable actuator 24, connected at one mobile end to the slide 21 and at the opposite end to a fixed load cell 25 , which continuously checks the applied load.

L’attuatore regolabile 24, secondo una realizzazione preferita, à ̈ costituito da un dispositivo pistone/cilindro pneumatico dotato di una valvola proporzionale che controlla in modo proporzionale la pressione di accostamento esercitata, vale a dire la spinta tra il rullo goffratore 120 in acciaio e il rullo di distribuzione 12 in gomma. Un sistema di controllo verifica in continuo tramite la cella di carico 25, a cui à ̈ collegato, che il valore impostato da pannello della pressione di accostamento rimanga invariato durante il funzionamento. The adjustable actuator 24, according to a preferred embodiment, is constituted by a pneumatic piston / cylinder device equipped with a proportional valve which proportionally controls the approach pressure exerted, i.e. the thrust between the steel embossing roller 120 and the rubber distribution roller 12. A control system continuously verifies by means of the load cell 25, to which it is connected, that the value set by the panel of the approach pressure remains unchanged during operation.

Secondo ulteriori realizzazioni dell’invenzione potranno essere impiegati differenti attuatori lineari sempre collegati alla cella di carico 25. According to further embodiments of the invention, different linear actuators can be used, always connected to the load cell 25.

Secondo una realizzazione preferita l’attuatore 24 à ̈ accoppiato ad un sistema di blocco 26 selettivamente attivabile, ad esempio un freno, che garantisce che l'attuatore 24 non abbia dei movimenti o cedimenti facendo si che si comporti da un elemento rigido durante il normale funzionamento del goffratorelaminatore 100. Il freno 26 à ̈ invece allentato per eseguire la regolazione della pressione di accostamento o per eseguire l’allontanamento del gruppo colla 10 dal rullo goffratore 120 in caso di accumuli accidentali di carta. Particolarmente vantaggiosa à ̈ l’applicazione del freno 26 nel caso in cui l’attuatore à ̈ di tipo pneumatico, o altri dispositivo che per loro natura non si comportano in modo rigido alle basse pressioni. According to a preferred embodiment, the actuator 24 is coupled to a lock system 26 which can be selectively activated, for example a brake, which ensures that the actuator 24 does not have any movements or sagging, causing it to behave from a rigid element during normal operation of the embosser-laminator 100. The brake 26, on the other hand, is loosened to adjust the approach pressure or to move the glue unit 10 away from the embossing roller 120 in the event of accidental accumulations of paper. Particularly advantageous is the application of the brake 26 in the case in which the actuator is of the pneumatic type, or other devices which by their nature do not behave rigidly at low pressures.

Il dispositivo di accostamento regolabile 20 del gruppo colla 10 al rullo goffratore 120 secondo l’invenzione, attua un metodo di regolazione dell’accostamento tra il rullo di distribuzione 12 e il rullo goffratore 120 con un controllo in pressione anziché in distanza. The device 20 for the adjustable approach of the glue assembly 10 to the embossing roller 120 according to the invention, implements a method of adjusting the approach between the distribution roller 12 and the embossing roller 120 with a control under pressure rather than in distance.

Infatti, il corretto accostamento tra il rullo di distribuzione 12 e il rullo goffratore 120 à ̈ individuato attraverso il rilevamento di una leggera pressione esercitata dal rullo dosatore 12 sul rullo goffratore 120 recante il velo di carta 101. La pressione di accostamento predeterminata al momento della regolazione iniziale della macchina ed impostata tramite l’azione dell’attuatore regolabile 24, su ognuno dei lati della macchina, à ̈ scelta indicativamente nell’intervallo compreso tra 0.02 Kg/cmlineare fino 1.5 kg/cmlineare, espresso secondo una unità di misura tipicamente impiegata nel settore. In fact, the correct approach between the distribution roller 12 and the embossing roller 120 is identified by detecting a slight pressure exerted by the metering roller 12 on the embossing roller 120 carrying the web of paper 101. The pressure of approaching predetermined at the time of initial adjustment of the machine and set through the action of the adjustable actuator 24, on each side of the machine, is chosen indicatively in the range from 0.02 Kg / linear cm up to 1.5 kg / linear cm, expressed according to a unit of measure typically used in the sector.

La pressione di accostamento à ̈ rilevata in continuo dalla cella di carico 25 e, in caso siano rilevate variazioni impostabili nell’ordine da 1 a 20 Kg, à ̈ possibile imporre una fermata di emergenza della macchina sbloccando i freni 26 e invertendo l’azionamento dell’attuatore 24 perché tale variazione à ̈ considerata anomalia del processo. The approach pressure is continuously detected by the load cell 25 and, if variations are detected that can be set in the order from 1 to 20 Kg, it is possible to impose an emergency stop of the machine by releasing the brakes 26 and reversing the Actuation of the actuator 24 because this variation is considered a process anomaly.

La regolazione di un nuovo valore di pressione di accostamento durante il funzionamento della macchina può anche essere impostata da pannello qualora si desideri modificare i valori predeterminati della macchina e non solo in caso la cella di carico 25 rilevi dei discostamenti dal valore predeterminato. The adjustment of a new approach pressure value during the operation of the machine can also be set from the panel if it is desired to modify the predetermined values of the machine and not only if the load cell 25 detects deviations from the predetermined value.

Nelle realizzazioni preferite dotate di freno 26, lo stesso deve essere temporaneamente allentato per procedere alla regolazione di un nuovo valore di pressione predeterminata da parte dell’attuatore 24, sia nel caso in cui la regolazione sia effettuata a macchina ferma sia nel caso avvenga durante il funzionamento. In preferred embodiments equipped with a brake 26, the same must be temporarily loosened in order to proceed with the adjustment of a new predetermined pressure value by the actuator 24, both in the case in which the adjustment is carried out with the machine stopped and in the event that it occurs during operation.

Risulta del tutto agevole comprendere quale sia il funzionamento del gruppo colla 10 con dispositivo di accostamento regolabile 20 in un goffratore-laminatore 100, oggetto della presente invenzione. It is quite easy to understand the operation of the glue unit 10 with an adjustable approaching device 20 in an embosser-laminator 100, object of the present invention.

Infatti il metodo di regolazione dell’accostamento tra il rullo dosatore 13 del gruppo colla 10 ed il rullo goffratore 120 in un goffratore-laminatore 100 prevede l’esecuzione delle seguenti fasi: In fact, the method of adjusting the approach between the metering roller 13 of the glue unit 10 and the embossing roller 120 in an embosser-laminator 100 provides for the execution of the following steps:

- impostazione di un valore predeterminato della pressione di accostamento tra detti rulli, - setting a predetermined value of the approach pressure between said rollers,

- controllo in continuo del valore istantaneo della pressione di accostamento esercitata. - continuous control of the instantaneous value of the approach pressure exerted.

Il gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, il relativo goffratore-laminatore e il metodo di regolazione dell’accostamento oggetto della presente invenzione hanno il vantaggio di eseguire il controllo sulla pressione di accostamento in continuo durante il funzionamento del goffratore-laminatore e non solo durante il settaggio iniziale dei parametri di funzionamento. The glue unit with an adjustable approaching device in an embosser-laminator, the relative embosser-laminator and the approaching adjustment method object of the present invention have the advantage of performing continuous control over the approaching pressure during the operation of the embosser. - laminator and not only during the initial setting of the operating parameters.

Inoltre, con il dispositivo di accostamento regolabile oggetto della presente invenzione vantaggiosamente possibile controllare da pannello la pressione di accostamento tra il rullo goffratore in acciaio e il rullo di distribuzione in gomma in qualsiasi stato della macchina, vale a dire sia a macchina ferma sia a macchina in movimento, provvedendo ad effettuare modifiche nelle regolazioni senza arrestare la macchina. Furthermore, with the adjustable approaching device object of the present invention it is advantageously possible to control from the panel the approach pressure between the steel embossing roller and the rubber distribution roller in any state of the machine, that is to say both when the machine is stopped and when the machine is still. in motion, making changes in the adjustments without stopping the machine.

Inoltre, vantaggiosamente, il dispositivo di accostamento regolabile oggetto della presente invenzione permette anche di rilevare gli eventuali accumuli accidentali di carta tra il rullo goffratore in acciaio e il rullo di distribuzione in gomma comandando automaticamente l’arresto in emergenza del goffratore-laminatore. Moreover, advantageously, the adjustable approaching device object of the present invention also allows to detect any accidental accumulations of paper between the steel embossing roller and the rubber distribution roller, automatically controlling the emergency stop of the embosser-laminator.

Il dispositivo di regolazione à ̈ vantaggiosamente applicabile ai comuni gruppi colla noti. The adjustment device is advantageously applicable to common known glue units.

Il gruppo colla con dispositivo di accostamento regolabile in un goffratore-laminatore, il relativo goffratore-laminatore e il metodo di regolazione dell’accostamento così concepito à ̈ suscettibile di numerose modifiche e varianti, tutte rientranti nell’invenzione; inoltre tutti i dettagli sono sostituibili da elementi tecnicamente equivalenti. In pratica i materiali utilizzati, nonché le dimensioni, potranno essere qualsiasi a seconda delle esigenze tecniche. The glue unit with adjustable approach device in an embosser-laminator, the relative embosser-laminator and the approach adjustment method thus conceived are susceptible of numerous modifications and variations, all of which are included in the invention; furthermore, all the details can be replaced by technically equivalent elements. In practice, the materials used, as well as the dimensions, can be any according to the technical requirements.

Claims (10)

RIVENDICAZIONI 1) Gruppo colla (10) con dispositivo di accostamento regolabile in un goffratore-laminatore, comprendente un rullo di distribuzione (12) della colla, un rullo dosatore (13) della medesima colla ed un serbatoio (14) di colla, caratterizzato dal fatto di comprendere, su ogni lato, una slitta (21), costituita da una fiancata recante detto rullo di distribuzione (12), in cui detta slitta (21) à ̈ applicata su una fiancata fissa (11) di detto gruppo colla (10) mediante almeno una guida lineare (22), orientata in direzione ortogonale rispetto agli assi di detti rulli, detta slitta (21) essendo collegata ad un gruppo di comando (23) comprendente un attuatore regolabile (24), collegato ad una estremità mobile a detta slitta (21) e ad una estremità opposta ad una cella di carico (25), fissa, che verifica in continuo il carico applicato. CLAIMS 1) Glue unit (10) with adjustable approach device in an embosser-laminator, comprising a glue distribution roller (12), a metering roller (13) for the same glue and a glue tank (14), characterized by the fact to comprise, on each side, a slide (21), consisting of a side bearing said distribution roller (12), in which said slide (21) is applied on a fixed side (11) of said glue unit (10) by means of at least one linear guide (22), oriented in an orthogonal direction with respect to the axes of said rollers, said slide (21) being connected to a control unit (23) comprising an adjustable actuator (24), connected to a movable end to said slide (21) and at one end opposite to a fixed load cell (25) which continuously checks the applied load. 2) Gruppo secondo la rivendicazione 1, caratterizzato dal fatto che detto attuatore regolabile (24) à ̈ accoppiato ad un sistema di blocco (26) selettivamente attivabile, quale un freno, per rendere detto attuatore (24) un elemento rigido privo di movimenti o cedimenti. 2) Group according to claim 1, characterized by the fact that said adjustable actuator (24) is coupled to a selectively activatable locking system (26), such as a brake, to make said actuator (24) a rigid element free of movements or subsidence. 3) Gruppo secondo una qualsiasi delle rivendicazioni 1 o 2, caratterizzato dal fatto che detto attuatore regolabile (24) à ̈ costituito da un dispositivo pistone/cilindro pneumatico dotato di una valvola proporzionale che controlla in modo proporzionale la pressione di accostamento esercitata. 3) Unit according to any one of claims 1 or 2, characterized by the fact that said adjustable actuator (24) is constituted by a pneumatic piston / cylinder device equipped with a proportional valve which proportionally controls the approach pressure exerted. 4) Gruppo secondo una qualsiasi delle rivendicazioni precedenti, caratterizzato dal fatto di comprendere un sistema di controllo collegato a detta cella di carico (25) della pressione di accostamento. 4) Group according to any one of the preceding claims, characterized in that it comprises a control system connected to said load cell (25) of the approach pressure. 5) Gruppo secondo una qualsiasi delle rivendicazioni precedenti, caratterizzato dal fatto che detta almeno una guida (22) à ̈ una guida a basso attrito. 5) Group according to any one of the preceding claims, characterized in that said at least one guide (22) is a low friction guide. 6) Gruppo secondo una qualsiasi delle rivendicazioni precedenti, caratterizzato dal fatto che detto rullo dosatore (13) e detto serbatoio colla (14) ad esso associato sono a loro volta vincolati in modo amovibile a detta slitta (21) attraverso una seconda fiancata (15). 6) Unit according to any one of the preceding claims, characterized by the fact that said metering roller (13) and said glue tank (14) associated with it are in turn removably linked to said slide (21) through a second side (15) ). 7) Goffratore-laminatore comprendente almeno un rullo goffratore (120), almeno un controrullo goffratore (110) ed un gruppo colla (10), detto gruppo colla (10) comprendendo un rullo di distribuzione (12) della colla, un rullo dosatore (13) della medesima colla ed un serbatoio (14) di colla, caratterizzato dal fatto che detto gruppo colla (10) à ̈ realizzato secondo una qualunque delle rivendicazioni da 1 a 6. 7) Embosser-laminator comprising at least one embossing roller (120), at least one embossing counter roller (110) and a glue unit (10), said glue unit (10) comprising a glue distribution roller (12), a metering roller ( 13) of the same glue and a glue tank (14), characterized in that said glue unit (10) is made according to any one of claims 1 to 6. 8) Metodo di regolazione dell’accostamento tra un rullo dosatore (13) di un gruppo colla (10) ed un rullo goffratore (120) in un goffratore-laminatore (100), caratterizzato dal fatto di effettuare in continuo un controllo della pressione di accostamento tra detti rulli. 8) Method for adjusting the approach between a dosing roller (13) of a glue unit (10) and an embossing roller (120) in an embosser-laminator (100), characterized by the fact that the pressure is continuously controlled of approach between said rollers. 9) Metodo secondo la rivendicazione 8, caratterizzato dal fatto di prevedere le seguenti fasi: - impostazione, su ogni lato, di un valore predeterminato della pressione di accostamento tra detti rulli, - controllo in continuo, su ogni lato, del valore istantaneo della pressione di accostamento esercitata. 9) Method according to claim 8, characterized in that it provides for the following steps: - setting, on each side, of a predetermined value of the approach pressure between said rollers, - continuous control, on each side, of the instantaneous value of the approach pressure exerted. 10) Metodo secondo la rivendicazione 9, caratterizzato dal fatto che detta fase di impostazione di un valore predeterminato della pressione di accostamento tra detti rulli può essere eseguita indifferentemente a macchina ferma o a macchina in movimento.10) Method according to claim 9, characterized in that said step of setting a predetermined value of the approach pressure between said rollers can be performed indifferently with the machine stopped or with the machine in motion.
IT001019A 2013-06-19 2013-06-19 GLUE UNIT WITH ADJUSTABLE COMBINATION DEVICE IN A SPREADER-LAMINATOR, RELATIVE EMBOSSER-LAMINATOR AND METHOD OF ADJUSTMENT OF ACCOMPANYING ITMI20131019A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT001019A ITMI20131019A1 (en) 2013-06-19 2013-06-19 GLUE UNIT WITH ADJUSTABLE COMBINATION DEVICE IN A SPREADER-LAMINATOR, RELATIVE EMBOSSER-LAMINATOR AND METHOD OF ADJUSTMENT OF ACCOMPANYING
EP14173088.7A EP2815815B1 (en) 2013-06-19 2014-06-19 Glueing group with adjustable approach device in an embosser-laminator, relative embosser-laminator and method for adjusting the approach
ES14173088.7T ES2636796T3 (en) 2013-06-19 2014-06-19 Gluing group with adjustable approach device in a laminator-laminator, associated stamper-laminator and approach adjustment method
RS20170781A RS56132B1 (en) 2013-06-19 2014-06-19 Glueing group with adjustable approach device in an embosser-laminator, relative embosser-laminator and method for adjusting the approach

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IT001019A ITMI20131019A1 (en) 2013-06-19 2013-06-19 GLUE UNIT WITH ADJUSTABLE COMBINATION DEVICE IN A SPREADER-LAMINATOR, RELATIVE EMBOSSER-LAMINATOR AND METHOD OF ADJUSTMENT OF ACCOMPANYING

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ITUA20163030A1 (en) * 2016-04-29 2017-10-29 O M T Di Giannini Graziano E Damiano & C S N C DEPOSIT GROUP
WO2021205253A1 (en) * 2020-04-10 2021-10-14 Fabio Perini S.P.A. Machine and method for embossing paper web products
CN115489167A (en) * 2021-06-18 2022-12-20 广东志德胜科技有限公司 Knurling error automatic compensation device
US12420518B2 (en) 2022-09-14 2025-09-23 Bw Converting, Inc. Coater and embosser-laminator process roll calibration
WO2025045511A1 (en) 2023-08-25 2025-03-06 Valmet Tissue Converting S.P.A. Embosser-laminator unit with functional liquid applicator, and method

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EP0601528A1 (en) * 1992-12-11 1994-06-15 BHS CORRUGATED MASCHINEN- UND ANLAGENBAU GmbH Glue applicator for paper corrugator
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