EP2127897A1 - Station d'application de colle et procédé de distribution de colle - Google Patents

Station d'application de colle et procédé de distribution de colle Download PDF

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Publication number
EP2127897A1
EP2127897A1 EP08157133A EP08157133A EP2127897A1 EP 2127897 A1 EP2127897 A1 EP 2127897A1 EP 08157133 A EP08157133 A EP 08157133A EP 08157133 A EP08157133 A EP 08157133A EP 2127897 A1 EP2127897 A1 EP 2127897A1
Authority
EP
European Patent Office
Prior art keywords
adhesive
application station
outlet opening
control unit
adhesive application
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP08157133A
Other languages
German (de)
English (en)
Inventor
Urs Sachs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balti AG
Original Assignee
Balti AG
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 Balti AG filed Critical Balti AG
Priority to EP08157133A priority Critical patent/EP2127897A1/fr
Publication of EP2127897A1 publication Critical patent/EP2127897A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C9/00—Applying glue or adhesive peculiar to bookbinding
    • B42C9/0006—Applying glue or adhesive peculiar to bookbinding by applying adhesive to a stack of sheets
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0204—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to the edges of essentially flat articles
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0266—Coating heads with slot-shaped outlet adjustable in length, e.g. for coating webs of different width

Definitions

  • the invention relates to an adhesive application station and a method for dispensing adhesive according to the preamble of patent claims 1 and 10, respectively.
  • Adhesive application stations are used in various industrial fields, in particular for binding stacked printed products.
  • EP 1 172 230 A2 there is known an adhesive application station which serves to bind stacked printed products by means of a flowable adhesive.
  • This adhesive application station contains an application head with a sliding surface serving for the transfer of the printed products.
  • This sliding surface is bounded on both sides by one stop each serving to guide the printed products and has an outlet slot from which adhesive can emerge.
  • the outlet slot is associated with a metering, by means of which the outlet slot can be opened or closed.
  • the adhesive is provided in a pressure vessel into which a plunger is insertable, whereby a pressure is generated by means of which the adhesive is displaced from the pressure vessel through the outlet slot.
  • the pressure vessel is refilled at regular intervals with adhesive.
  • the pressure vessel can be opened and closed and the adhesive flow can be controlled accordingly.
  • a disadvantage of this device is that a relatively large amount of adhesive is stored in the pressure vessel, which is to be protected from external influences, in particular moisture, and is always kept at the same operating temperature, so that no changes in the properties, in particular the viscosity occur.
  • the loading and unloading of the pressure vessel at startup and end of operation are also associated with high costs.
  • a further disadvantage is that the flow of adhesive is difficult to control by means of the metering shaft. On the one hand can be generated with the plunger only a relatively low pressure, so that after opening the dosing of the adhesive begins to flow slowly through the exit slot. After closing the metering, however, it is possible that adhesive remains in the region of the outlet opening, which can result in quality defects in the printed products and impurities at the adhesive application station.
  • adhesive left in the exit slot can harden and clog the glue channel.
  • the adhesive flow is difficult to control because it depends on the particular condition of the adhesive, the exact rotational angle of the metering and the pressure generated by the plunger.
  • the adhesive application station known from [1] is therefore designed for uninterrupted operation during which larger series of printed products are processed.
  • the present invention is therefore based on the object to provide an improved adhesive application station and an improved method for dispensing adhesive.
  • the adhesive should be fed to the adhesive application station in a simple manner and can be removed again. An aging of the adhesive stored in the adhesive application station should be avoided.
  • the adhesive should also be delivered regardless of the operating time of the glue application station, always in the same high quality.
  • the adhesive application station should be able to deliver the adhesive optimally adapted to the conveying process, preferably individually according to the wishes of the user, to the conveyed printed products.
  • the adhesive should be optimally protected against external influences before application to the printed product.
  • the adhesive application station provided in particular for binding printed products has a head element serving to deliver flowable adhesive with an outlet opening, through which the adhesive can be transferred to the printed product.
  • At least one rotating conveying element which is connected via a coupling element to a drive unit which can be controlled by means of a control unit, is located within a conveying space provided in the head element arranged.
  • the adhesive supplied to the conveying space is conveyed to the subsequent, preferably slot-like, outlet opening towards the conveying space.
  • the outlet opening is provided with a closure element, optionally a metering element, such as its own metering shaft.
  • the conveying elements consist of screws, screws or wheels, in particular gears, which are preferably operable in the forward and reverse. It can be promoted to the exit slot in the flow continuously adhesive.
  • adhesive tabs are also avoided as adhesive residues in the outlet channel.
  • the adhesive application station is therefore automatically back in one orderly state in which the operation can be interrupted for a long time without glue in the outlet area dry out and can hinder the resumption of operation.
  • the delivery chamber the inner dimensions of which preferably correspond at least approximately to the dimensions of the delivery elements, are connected via a line to an adhesive container.
  • the delivery chamber can also adjoin an adhesive chamber.
  • the adhesive is conveyed on the outside by means of the conveying elements according to the first-in first-out principle, it is ensured that the adhesive is always subjected to the same effects and thus always delivered in the same quality. Cyclic processing of a subset of the adhesive, ie circulation of the adhesive through the system until the time of dispensing, is avoided. Since the pumping chamber only serves to accommodate the respectively conveyed adhesive, it is further ensured that always one Supply of fresh glue takes place. Aging of a relevant amount of adhesive within the delivery chamber is avoided.
  • the conveying elements and the drive form a modular conveyor segment, which can be coupled in a simple manner with the head element or integrated into this.
  • the conveying elements are provided in a conveyor segment, which is connected in one piece with the other elements of the head element or by means of connecting parts, such as screws.
  • the delivery segment optionally the metering pump, can produce a delivery pressure in the range between 1 bar and 200 bar, preferably between 10 bar and 50 bar. Due to the high delivery pressure of the conveyor segment, the adhesive can be applied very quickly from the exit slot to the printed product with short start-up times. This allows accurate positioning of the adhesive on the printed product.
  • outlet slot by means of a closure element, such as a metering or a slide, optionally closable. Closing the outlet slot prevents the adhesive in the adhesive application station from coming into contact with ambient air and thus prematurely crosslinking before application to a printed product.
  • a closure element such as a metering or a slide
  • At least one heating element is provided in the region of the delivery chamber or the adjacent adhesive chamber.
  • the adhesive is in a non-flowable state at room temperature and must therefore be liquefied prior to application to the printed product by heating and preferably adjusted to a suitable viscosity.
  • the adhesive temperature is preferably selected according to the processed adhesive.
  • At least one sensor connected to the control unit is provided, by means of which at least one measurement variable relevant to the work process is detected, which is subsequently taken into account by the control program.
  • sensors are provided, by means of which measured variables of the adhesive application station, chemical and physical properties of the adhesive, as well as states of the delivery process can be detected.
  • control unit On the basis of the measured variables determined by the sensors, it is possible for the control unit to record all relevant parameters of the adhesive application station and the working process and to control the intended actuators accordingly.
  • the control unit can respond to a wide variety of influences and conditions, such as the temperature of the adhesive application station, the temperature or the current flow of the adhesive, as well as the outside temperature, if appropriate the air humidity, in such a way that an optimal application of adhesive is achieved on the printed products.
  • heating elements, the closure element and the drive unit optionally by flow and return, controllable such that the adhesive receives its optimum properties, in particular the required viscosity and in exactly defined amounts, preferably in selectable layer thickness, optionally sequentially can be applied to the printed product.
  • sequential application a reduced amount of adhesive can be applied to selected areas of the printed product. As a result, the printed product is less stiff and is easier to open. In addition, adhesive is saved.
  • a printed product For preferably individually controlled release of adhesive to the individual printed products and to avoid the release of adhesive in periods in which no printed product is present, it is determined by means of sensors, preferably light barriers or mechanical buttons, whether a printed product is in a position or is guided, can be applied in the adhesive.
  • sensors preferably light barriers or mechanical buttons, whether a printed product is in a position or is guided.
  • the front and the back of the printed product are detected with a light barrier. It is also possible to detect only one end of the printed product and to calculate the presence of the printed product at the delivery point on the basis of the conveying speed and the length of the printed products.
  • a sensor may be provided which detects the identification data associated with the printed product and supplies it to the control unit, which emits adhesive in the manner provided for the identified printed product. This is of particular interest when individual books are to be printed and produced according to the wishes of a customer.
  • FIG. 1 shows an inventive adhesive application station 100, which serves to bind stacked printed products 2 by means of a flowable adhesive 5.
  • the adhesive application station 100 has a head element 1, which in FIG. 2 schematically in a side section and in FIG. 3 in a preferred embodiment is shown from above.
  • the head element 1 is provided on its upper side with a sliding surface 132 serving for the sliding transfer of the printed products 2, in which a slot-like outlet opening 131 extends transversely to the conveying direction of the printed products 2. From the outlet opening 131 of the adhesive 5 is discharged continuously or sequentially, preferably individually to the printed products 2.
  • the head element 1 has a conveying segment 11 with a conveying space 112, in which rotating conveying elements 111 are provided, by means of which the adhesive 5 entering the conveying space 112 is conveyed to the outlet opening 131.
  • the slot-like outlet opening 131 is associated with a controllable closure element 7, by means of which the outlet opening 131 can be opened and completely or partially closed.
  • the closure element 7, preferably a metering shaft provided with a slot 71, is preferably moved by means of an actuator 42 controlled by the control unit 4.
  • the conveyor elements 111 are mechanically connected by a coupling element 113 in the form of a shaft to the drive unit 43 and form a conveyor segment 11.
  • the conveyor elements 111 may also be connected by a gear or a chain with the drive unit 43.
  • a preferably controllable coupling unit 114 may be provided which connects the shaft 113 fixed or optionally with the drive unit 43.
  • the conveying elements 111 can therefore be set in motion by the engagement of the drive unit 43 or by the actuation of the coupling unit 114 (with the drive unit 43 running). Also possible is a parallel control, in which the conveyor elements 111 are set in motion, for example, by actuation of the coupling unit 114 and stopped by the stoppage of the drive unit 43.
  • the drive shaft 43 driven by the drive shaft 43 is provided with a flywheel, the promotion of the adhesive can be set practically without delay in motion.
  • FIG. 1 It is shown that the drive unit via a control channel A and the possibly existing, controllable coupling unit 114 via a control channel B is controllable. In simpler embodiments, no or a non-controllable coupling unit 114 is provided.
  • the adhesive 5 is conveyed from an adhesive container 51 via a preferably provided with at least one heating element 41 transfer segment 12 into the delivery chamber 112 and further, again through the transfer segment 12 to an exit segment 13 of the head element 1, and there discharged through the outlet opening 131 provided therein ,
  • the segmentation of the header 1 can be implemented physically or only organizationally. That is, the head element 1 may consist of an aggregate of modular segments 11, 12, 13, ... or may comprise said segments 11, 12, 13, ... in one piece, the head element 1 preferably comprising at least two shells can be easily coupled together.
  • the drive 43 preferably an electric motor, can likewise be integrated into the conveyor segment 11, which can thereby form an autonomous module, eg an independent metering pump.
  • the head element 1 can form a unitary block in which actuators 40, such as heating elements 41, and sensors 30, such as temperature sensors 35, can be introduced.
  • sensors 331 are provided, by means of which the conveying process can be monitored, are fed by the printed products and carried away.
  • sensors are provided by means of which the arrival and Residence time of the printed products 2 at or above the outlet opening 131, where appropriate, the conveying speed can be determined so that the control unit 4, the actuators 40 can operate such that adhesive 5 individually and only within the periods in which a printed product 2 passes over the outlet opening 131 , is delivered to this.
  • the adhesive 5 is delivered in a specific program sequence to a single printed product 2.
  • the adhesive 5 is only applied to the back of a stacked printed product 2 within individual sections. This achieves in a particularly advantageous manner that the printed product 2 is firmly bound and still retains its flexibility in areas where no adhesive 5 has been applied.
  • the flow of the adhesive 5 can be controlled virtually arbitrarily.
  • the flow rate can be increased or decreased linearly or stepwise, wherein a reversal of the flow direction can be realized.
  • a specific, individually adapted to a printed product adhesive release profile can be provided, as shown in FIG. 7 is shown. If the arrival of a printed product 2 is expected for the time t1, the adhesive flow is preferably started shortly before, so that the adhesive 5 can be dispensed at the outlet 131 in time upon the arrival of the printed product 2. It can be provided that immediately after the arrival of the printed product 2, a higher adhesive flow is present, and this is lowered after a short period to a normal value. After the time t2, at which the printed product 2 leaves the outlet opening, the adhesive flow is inverted, so that the outlet channel 135 and the slot 71 of the metering shaft 7 is emptied again.
  • connection and / or disconnection of the adhesive flow can take place within a few milliseconds.
  • the adhesive application station 100 is controlled and monitored by the control unit 4.
  • heating elements 41 are provided at several locations of the adhesive application station 100 to condition the adhesive 5, particularly to achieve and maintain a desired viscosity.
  • PUR adhesives reach their optimum viscosity at approx. 150 ° C and should be applied to a printed product 2 after the single reflow, as their chemical and physical properties change on cooling.
  • the conditioning of the adhesive 5 can also be achieved or supported by means of vibration of the conveying elements 111.
  • FIG. 3 shows the head element 1 seen from above, with adjustable side guides 8, limited by the lockable by means of a controllable metering shaft 7 exit slot 131 on both sides and the printed products 2 are performed.
  • different printed products 2 such as books, catalogs, brochures or booklets
  • the adhesive application station 100 sequences of different printed products 2, such as books with different dimensions, supplied to which the side guides 8 are preferably automatically adjusted by means of an actuator 45.
  • the side guides 8 can also be manually adjusted by means of a mechanical device 81.
  • all process parameters for a printed product 2 can be set individually.
  • the process parameters associated with a printed product 2 are read by means of reading devices, such as optical readers, e.g. Bar code readers, or RFID readers, an information storage (e.g., a bar code label or RFID tag) located on the supplied printed product 2.
  • reading devices such as optical readers, e.g. Bar code readers, or RFID readers
  • an information storage e.g., a bar code label or RFID tag located on the supplied printed product 2.
  • the required information may be stored in a central computer and, if necessary, transmitted to the control unit 4. It is also possible that each printed product 2 is assigned only an identification code, which is read and linked in the control unit 4 with the associated process parameters.
  • the lateral guides 8 are adjustable to the width of the printed products 2 and preferably also limit the width of the outlet opening 131, so that no excess adhesive 5 can emerge on the sides of the printed products 2, which forms so-called glue cords, which are subsequently either from the printed products 2 or have to be removed from the adhesive application station 100.
  • FIG. 4 shows a conveyor segment 11 in a detailed view.
  • the conveyor segment 11 has two rotatably mounted toothed wheels 111, which serve as conveying elements 111.
  • the gears 111 at least one of which is coupled to the drive unit 43, interlock with one another in such a way that adhesive 100 is detected and conveyed in the remaining gaps. From The two gears 111 may be connected to both or only one with a drive unit 43.
  • FIG. 4 it is schematically shown that a plurality of conveyor segments 11 can also be provided, to which, for example, different adhesives 5 are supplied. This makes it possible to optionally dispense different adhesives 5 to the printed products and / or to mix different adhesives 5 as needed.
  • Each of the conveyor segments 11, 11 ', 11'' is preferably associated with its own drive 43, which is controlled by the control unit 4.
  • FIG. 5 shows the head element 1 in a sectional view with a closure element 7.
  • the sectional profile divides the conveyor segment 11 in two halves, which is why only one gear 111 is shown in the delivery chamber 112.
  • the conveyor segment 11 is here arranged directly at the metering shaft 7 or at the outlet opening 131.
  • the closure element 7 serves for airtight closure of the outlet opening 131 or the delivery chamber 112 and is shown in the closed position.
  • the closure element 7 is configured as a metering shaft and provided with a longitudinal slot 71. If the longitudinal slot 71 of the rotating about its longitudinal axis metering shaft 7 is aligned in a plane with the exit slot 131, the adhesive 5 can escape from this. After rotating the metering shaft 7 by 90 °, the exit slot 131 is sealed, so that ambient air and moisture can not enter the delivery chamber 112 and change the properties of the adhesive 5.
  • the closure element 7 can be designed differently. For example, it can also be mounted as a slide in or at the exit slot 131.
  • the closure element 7 is preferably closed when the adhesive application station 100 is idle. During operation of the Adhesive application station 100, the advantages of the inventive solution to bear, according to which the adhesive 5 is controlled by means of the conveying elements 111.
  • closure element 7 elastic lips can be provided in a preferred embodiment, which are separated from each other under pressure of the supplied adhesive 5 and then rest against each other and the outlet opening 131 close tightly.
  • FIG. 5 Furthermore, two printed products 2A, 2B are shown, one of which has been provided with an adhesive application 21, which consists of a sequence of separate adhesive surfaces.
  • FIG. 6 shows sensors 30 which detect values and states of the adhesive application station 100 and the operating process and forward them to the control unit 4 as well as actuators 40 which are controlled by the control unit 4 in order to optimally control the operating process.
  • measurement quantities can be detected, such as sizes 31 of the printed product, e.g. the width 311, the weight 312, the temperature 313, the material 314; Sizes of the adhesive, such as viscosity 321, temperature 322; Sizes 33 of the work process, such as the position 331 and the movement 332 of the printed products 2; Sizes of the environment, such as the ambient temperature 341 and the humidity 342; and / or state variables of the adhesive application station 100, such as functional states 351, temperatures 352, the supply voltage 353, etc.
  • sizes 31 of the printed product e.g. the width 311, the weight 312, the temperature 313, the material 314
  • Sizes of the adhesive such as viscosity 321, temperature 322
  • Sizes 33 of the work process such as the position 331 and the movement 332 of the printed products 2
  • Sizes of the environment such as the ambient temperature 341 and the humidity 342
  • state variables of the adhesive application station 100 such as functional states 351, temperatures 352, the supply voltage 353, etc.
  • the control unit 4 takes into account the measured values and states and determines the optimum output values for the actuators 40.

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  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP08157133A 2008-05-28 2008-05-28 Station d'application de colle et procédé de distribution de colle Withdrawn EP2127897A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08157133A EP2127897A1 (fr) 2008-05-28 2008-05-28 Station d'application de colle et procédé de distribution de colle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08157133A EP2127897A1 (fr) 2008-05-28 2008-05-28 Station d'application de colle et procédé de distribution de colle

Publications (1)

Publication Number Publication Date
EP2127897A1 true EP2127897A1 (fr) 2009-12-02

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EP08157133A Withdrawn EP2127897A1 (fr) 2008-05-28 2008-05-28 Station d'application de colle et procédé de distribution de colle

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EP (1) EP2127897A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011117676A1 (fr) * 2010-03-24 2011-09-29 New Bind Srl Applicateur de colle pour machines à relier
CN102815109A (zh) * 2012-09-10 2012-12-12 黄力树 喷胶式无线胶装机的喷嘴机构
EP3569320A1 (fr) * 2018-05-15 2019-11-20 Ribler GmbH Dispositif et procédé d'application de colle sur des produits de l'imprimerie

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660148A (en) 1951-07-28 1953-11-24 Mccall Corp Adhesive extruder for bookbinding machines
WO1987004951A1 (fr) * 1986-02-12 1987-08-27 Robotics, Inc. Systeme de commande d'une pompe de distribution d'un materiau adhesif et pompe pour ce systeme
US5129772A (en) * 1990-05-07 1992-07-14 Slautterback Corporation Adhesive extrusion method for bookbinding
DE4121792A1 (de) 1991-07-02 1993-01-07 Kolbus Gmbh & Co Kg Duesenauftragssystem
EP0578119A1 (fr) * 1992-07-08 1994-01-12 Nordson Corporation Appareil et méthodes pour l'application par intervalles de revêtements adhésifs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660148A (en) 1951-07-28 1953-11-24 Mccall Corp Adhesive extruder for bookbinding machines
WO1987004951A1 (fr) * 1986-02-12 1987-08-27 Robotics, Inc. Systeme de commande d'une pompe de distribution d'un materiau adhesif et pompe pour ce systeme
US5129772A (en) * 1990-05-07 1992-07-14 Slautterback Corporation Adhesive extrusion method for bookbinding
DE4121792A1 (de) 1991-07-02 1993-01-07 Kolbus Gmbh & Co Kg Duesenauftragssystem
EP0578119A1 (fr) * 1992-07-08 1994-01-12 Nordson Corporation Appareil et méthodes pour l'application par intervalles de revêtements adhésifs

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011117676A1 (fr) * 2010-03-24 2011-09-29 New Bind Srl Applicateur de colle pour machines à relier
CN102933399A (zh) * 2010-03-24 2013-02-13 4B-四邦有限责任公司 用于装订机的涂胶器
CN102815109A (zh) * 2012-09-10 2012-12-12 黄力树 喷胶式无线胶装机的喷嘴机构
CN102815109B (zh) * 2012-09-10 2014-09-24 黄力树 喷胶式无线胶装机的喷嘴机构
EP3569320A1 (fr) * 2018-05-15 2019-11-20 Ribler GmbH Dispositif et procédé d'application de colle sur des produits de l'imprimerie
WO2019219745A1 (fr) * 2018-05-15 2019-11-21 Ribler Gmbh Dispositif et procédé d'application d'un adhésif sur des produits de l'imprimerie

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