EP3546070A1 - Dispositif d'application d'une matière coulante à un substrat - Google Patents

Dispositif d'application d'une matière coulante à un substrat Download PDF

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Publication number
EP3546070A1
EP3546070A1 EP18164294.3A EP18164294A EP3546070A1 EP 3546070 A1 EP3546070 A1 EP 3546070A1 EP 18164294 A EP18164294 A EP 18164294A EP 3546070 A1 EP3546070 A1 EP 3546070A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
flow channel
slot
nozzle slot
adhesive
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.)
Granted
Application number
EP18164294.3A
Other languages
German (de)
English (en)
Other versions
EP3546070B1 (fr
Inventor
Micha Schären
Claudio Hofer
Thomas Burger
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.)
Robatech AG
Original Assignee
Robatech 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 Robatech AG filed Critical Robatech AG
Priority to EP18164294.3A priority Critical patent/EP3546070B1/fr
Priority to JP2019010383A priority patent/JP7335075B2/ja
Priority to US16/355,831 priority patent/US11071997B2/en
Priority to CN201910238199.4A priority patent/CN110303791B/zh
Publication of EP3546070A1 publication Critical patent/EP3546070A1/fr
Application granted granted Critical
Publication of EP3546070B1 publication Critical patent/EP3546070B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C9/00—Applying glue or adhesive peculiar to bookbinding
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • 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
    • B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve

Definitions

  • the invention relates to a device for applying a flowable material, in particular a flowable adhesive, on at least one substrate, with a die designed as a slot nozzle nozzle having a stationary nozzle body with an inlet port, a flow channel and a nozzle slot, wherein in a conveying of the flowable material through the application nozzle, the flowable material passes from the inlet opening into the flow channel and from there to the nozzle slot and is discharged through an outlet opening of the nozzle slot, wherein the outlet opening is arranged in an outer region of the nozzle body, wherein the application nozzle further comprises a slide which relative to Nozzle body in the longitudinal extension of the outlet opening is movable over this by means of an actuating means and the outer region contacted, for variably covering the outlet opening.
  • a cross-sectional area of the flow channel in the Y-direction Relative to an orthogonal system with the coordinates X, Y and Z, a cross-sectional area of the flow channel in the Y-direction, the cross-sectional area being defined by a plane in the XZ-direction, extends a width of the nozzle slot in the Y-direction, the width being in X-direction is defined, extends a depth of the nozzle slot in the Y direction, wherein the depth is defined in the Z direction.
  • the main field of application is the application of flowable adhesives by means of the devices.
  • Another essential field of application is, in contrast to the adhesive technique, the coating technique, thus the application of flowable materials for the purpose of coating substrates by means of the device.
  • press sheets are collected into loose book blocks and then processed in an adhesive binder substantially at the back, then adhesive is applied to the book block back and / or on the inside of the back of a Cover applied, which is combined with the book block and then pressed against this.
  • the book blocks are each clamped during processing in a guided circumferential transport clamp the perfect binder with downwardly prominent back.
  • the adhesive is in particular dispersion adhesive, hot melt adhesive or dispersion / hot melt adhesive combinations.
  • the adhesive polyurethane called PUR short
  • PUR short has been found to be a hot melt adhesive, which has a particularly good Blattausreissfesttechnik and scores particularly advantageous results in the book block with respect to the 180 ° -aufschlag s, the so-called lay-flat behavior.
  • This adhesive can also be advantageously used for poorer paper quality, for example for coated papers, in which the proportion of coating constituents outweighs the fiber content required for the strength, and which can also roughen poorer to expose the fiber for the bond.
  • Slot nozzle application devices For the processing of reactive adhesives, for example with moisture surrounding the environment of chemically reacting polyurethanes, so-called Slot nozzle application devices used.
  • the adhesive is usually liquefied in a dense, filled with a dry gas pre-melter and fed by means of a volumetric pump via a Klebstoffzumoltechnisch an applicator of the application nozzle designed as a slot nozzle and transferred from this on the book block back or the envelope.
  • the amount of adhesive to be delivered per unit time depends on the conveying speed of the book block, the book block thickness and the thickness of the adhesive film to be applied to the book block spine or cover.
  • a control device calculates the required speed of the pump or the amount of adhesive to be delivered by the pump. In the area between successive book blocks, the adhesive supply to the slot nozzle must be interrupted.
  • a device having the features of the preamble of claim 1 is known from DE 103 20 515 A1 known. This serves to apply a flowable adhesive.
  • a negative pressure is generated by pulling a bellows, which is a component of a chamber wall, outward by means of an adjusting device.
  • the vacuum draws adhesive into the chamber.
  • an overpressure is generated in the chamber by the fact that the bellows is pressed by the adjusting device into the chamber.
  • the over-pressure causes adhesive to be forced out of the chamber through a surface application die and applied thereto.
  • the nozzle opening of the surface application nozzle is designed as a slot opening.
  • the slot has, based on the outlet cross-section, a maximum length which corresponds to the maximum width of the book spine to be processed. With narrower spine of the nozzle slot is closed by a slide according to the desired width of the spine seal.
  • portions, in particular portions of the bellows hardly or little flowed through by the adhesive. In these rooms, the adhesive can age and harden completely or partially. Apart from this, the formation of the device with the bellows is structurally complex and prone to failure.
  • the application nozzle is conductively connected to an adhesive supply system.
  • An outlet opening of a nozzle slot of the application nozzle is changeable and adaptable to the thickness of a book block to be processed.
  • the application nozzle has a first chamber for providing adhesive, adjacent to the outlet opening, and a second chamber, disposed between the outlet opening and the adhesive supply system.
  • a first slider in the region of the first chamber serves to change the width of the first chamber and a second slider in the region of the second chamber to change the volume of the second chamber.
  • the second chamber thus provides a variable volume reservoir which can be used to contain excess adhesive when switching from a book block of greater thickness to a book block of lesser thickness or to release additional adhesive when from a book block of lesser thickness a book block of greater thickness is changed. This will ensure that excess adhesive does not cause any bead of adhesive to change the exit opening of the die slot, which could either cause the applicator die to stick or soil the book block.
  • a disadvantage of this device that in the application nozzle areas are present, which are flowed through little or little, so that aging in these cavities in particular PUR adhesive and can cure completely or partially. Apart from this, this device is structurally quite expensive.
  • An application nozzle for producing a sheetlike extrudate of liquid material wherein a flow channel formed in the nozzle body hanger-shaped is educated, is out of the EP 0 589 987 A1 known.
  • an inlet opening is arranged in the flow channel in a central region of the flow channel.
  • Object of the present invention is to develop a device having the features of the preamble of claim 1, so that it is structurally particularly simple design, a uniform outlet of the flowable material is ensured by the outlet opening at different covering positions of the slide, and the Changing the position of the cover of the outlet opening no flowable substance exiting the outlet opening, further in the nozzle body no cavities are formed, which are not or only partially filled with the flowable material.
  • the longitudinal extension of the flow channel is at least as large as the longitudinal extent of the nozzle slot.
  • the inlet opening in the region of one end of the flow channel is operatively connected to this.
  • the other end of the flow channel ends in the region of one end of the nozzle slot.
  • the outlet opening can be dimmed by means of the slide starting from the other end of the nozzle slot.
  • the cross-sectional area of the flow channel in the Y direction from the one end of the flow channel to the other end of the flow channel decreases steadily, further, the width of the nozzle slot over the course in the Y direction is constant or it takes the width of the nozzle slot over the course Further, in the Y direction, from the other end to the one end, the depth of the nozzle slit is constant along the Y direction thereof, or it increases the depth of the nozzle slit through the Y direction thereof from the other end the one end from steadily, not at the same time the width of the nozzle slot and the depth of the nozzle slot are constant.
  • the flowable material is always conveyed over the entire length of the flow channel, thus from the inlet opening to the end of the flow channel , which faces away from the inlet opening.
  • the cross-sectional areas of the flow channel over its length and the cross-sectional area of the nozzle slot over its length are dimensioned so that the flowable material is distributed evenly over the length of the nozzle slot, regardless of the position in which the slider is located.
  • flowable material is not conveyed out of the nozzle slot since the slider exerts no influence on the flowable material located in the nozzle slot. Due to the design of the flow channel and the nozzle slot, the dispensing of the flowable substance is largely constant over the length of the outlet opening of the nozzle slot that is not covered by the slide.
  • the nozzle slot preferably has a cross-sectional area over its length, which is identical in terms of its shape.
  • the flow channel and / or the nozzle slot have a fixed volume. Regardless of the respective position of the slide thus there is no change in the volume of the flow channel or the nozzle slot and therefore there are no further internals to be provided within the nozzle body, which would cause a change in the volume.
  • the device is structurally particularly simple because it is only necessary with respect to the stationary nozzle body to provide it with the inlet opening, the flow channel and the nozzle slot.
  • a blocking means for interrupting the inflow of flowable material is arranged in the flow channel.
  • This locking means which is in particular a valve, in an open or a closed position can be transferred, is always in the open position, when the flowable material is to be dispensed from the nozzle body, thus when applying the flowable substance to the substrate.
  • the locking means when moving the slider in its blocking position. If the slide is moved, there is thus no promotion of the flowable material through the inlet opening in the flow channel and the nozzle slot.
  • the flow channel in the region of the nozzle slot on a over the local length of the flow channel substantially linearly variable cross-sectional area or a cross-sectional area whose change is a simple curved curve, thus curve without inflection point.
  • This design particularly takes into account the fact that the flowable material is supplied in the region of the one end of the flow channel and thus, because of the discharge of the flowable material through the nozzle slot upstream of the flow channel, a larger volume of the flowable material must be present than downstream , further friction losses during conveyance of the substance.
  • This change in the cross-sectional area of the flow channel in the region of the nozzle slot this requirement can be met particularly advantageous.
  • the cross-sectional area of the flow channel decreases towards the other end of the flow channel, thus towards the end facing away from the inlet opening.
  • the cross-sectional area of the flow channel at the other end of the flow channel is at most half as large as the cross-sectional area of the flow channel at one end.
  • variable cross-sectional area of the flow channel is identical.
  • Such a design is structurally particularly easy to produce and allows optimal fürströmmik in the flow channel.
  • the change in the cross-sectional area of the flow channel and / or the width of the nozzle slot and / or the depth of the nozzle slot is not linear over its length, in particular according to a simple curved curve.
  • the nozzle body is designed, if this has a first nozzle body part and a second nozzle body part, which are interconnected and between which the flow channel and the nozzle slot are formed.
  • the flow channel and the nozzle slot can thus be integrated particularly easily into one or the other nozzle body part or into both nozzle body parts, so that the nozzle body is formed when the two nozzle body parts are connected.
  • the nozzle body has strip-shaped nozzle body parts. The nozzle body parts are thus elongated and particularly well suited to form the flow channel and the nozzle slot in the nozzle body.
  • the flow channel and / or the nozzle slot is or are formed exclusively by recesses in a nozzle body part. This significantly reduces the construction and production costs of the nozzle body.
  • the cross-sectional area of the flow channel has the shape of a semicircle. Such a semicircular depression can be particularly easily introduced into the relevant nozzle body part.
  • the flow channel and the nozzle slot are formed in the one nozzle body part and the inlet opening and a supply to the inlet opening in the other nozzle body part.
  • the functionalities are structurally separated, namely the functionality of the flow channel and the nozzle slot assigned to a nozzle body part and assigned the functionality of the inlet opening and the supply to the inlet opening of the other nozzle body part. This not only simplifies the manufacture of the nozzle body, but also the connection of the nozzle body to a feed for the flowable material.
  • the nozzle slot has a shape over its length such that the width of the nozzle slot between the flow channel and outlet opening is constant or continuously tapers from the flow channel to the outlet opening, in particular linearly tapers. At the same pressure conditions in the flow channel over the length thereof, based on the length of the nozzle slot, a constant flow of the flowable substance through the outlet opening of the nozzle slot is thus achieved over the length of the nozzle slot.
  • the outlet opening and / or the nozzle slot and / or the flow channel is arranged horizontally or are, in particular the outlet opening is arranged above the flow channel.
  • This design or arrangement takes into account that the flowable material, in particular present flowable adhesive, is issued upwards, for the purpose of application to a substrate, which is arranged above the nozzle body is conveyed through the outlet opening. It is quite possible vertical arrangement instead of the described horizontal arrangement.
  • the outer region of the nozzle body having the outlet opening is planar and the slider has a flat section for contacting the nozzle body in this area, in particular for sealing contact under prestressing.
  • the outlet opening of the application nozzle is preferably completely coverable by means of the slide, in particular sealingly coverable.
  • a standstill of the device for applying the flowable material in particular a PUR adhesive, prevents the substance or the adhesive can react in the application nozzle, in particular due to the moisture of the ambient air can harden.
  • the device comprises a feeder which is provided with a contact surface which is arranged perpendicular to the longitudinal extent of the outlet opening laterally of the outlet opening, further the slide on a side facing the feeder has a contact surface which is parallel to the contact surface of the Investor is arranged. Regardless of the position of the slide thus an insertion region for the respective substrate are formed between the contact surfaces of the feeder and slider.
  • This is in particular a book block, which is held in a clamping device and is contacted between the contact surfaces of the feeder and slide laterally to the guide.
  • the abutment surfaces have surface areas which form converging insertion surfaces for the substrate.
  • the device should be used as part of an adhesive application device in connection with digital printing and a subsequent book production with the generic term "book on demand".
  • the size of the overlay can be a minimum of one piece.
  • This application width can only be in the range of 2 to 5 mm.
  • a closed adhesive system is used that takes into account the peculiarities of reactive thermosetting hotmelt adhesives such as PUR contributes and minimizes the ingress of ambient air and thus moisture and keeps the mechanical stress of adhesive small.
  • the slot nozzle used is of particular advantage.
  • the slot nozzle has an adjustment mechanism for adjusting the application width of adhesive on the spine of the book. After the adjustment no retraction of the slot nozzle is required, so that the quality of the adhesive application in the first book after the adjustment is already sufficient.
  • the slider and its drive are designed such that during the adjustment of the position of the slider, the volume of the adhesive within the slot nozzle is not affected. Thus, no adhesive occurs during the adjustment and there are no additional cavities that are not or only partially filled with adhesive.
  • the slit nozzle and the adjusting mechanism for the slide are designed so that there are no moving parts that can stick together. Due to the simple geometry of the adhesive-carrying parts, a simple cleaning is possible.
  • the volume within the slot nozzle is designed so that all adhesively charged cavities are flowed through with adhesive and there are no so-called dead spaces in which the adhesive can age or harden.
  • the device according to the invention in addition to the described developments is further characterized by a simple structure with few parts that come into contact with the adhesive from. As a result, the device can be disassembled, cleaned and maintained with little effort.
  • the uniformity of the adhesive application is essentially constant over the entire book block thickness, so that the quality of the adhesive application is at least sufficient. This uniformity of the adhesive application is maintained over the entire adjustment range of the application width of the adhesive application. This uniformity is also maintained over a wide range of the viscosity of the adhesive.
  • Fig. 1 illustrates the installation situation of an adhesive binding machine 1 for the intermittent application of a flowable adhesive to substrates, in this case on spine 2 of book block 3.
  • the adhesive is, for example, polyurethane.
  • This hot melt adhesive has the particularly good Blattausreissfesttechnik, also in book block 3 an optimal lay-flat behavior.
  • a pre-melter 4 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of Fig. 1 and 2 With reference to the illustration of
  • variable longitudinal extent of the outlet cross-section is matched to the respective width of the book block 3, wherein this width extends in the Y direction, and the order length of the adhesive on the spine 2 of the book block 3 results due to the conveying movement of the respective book block 3 in X direction.
  • the mass flow rate of the adhesive through the outlet cross section 11 of the application nozzle 10 results in a defined application strength in the Z direction on the spine 2 (see in particular the illustration of Fig. 3 ).
  • the adhesive is uniformly applied by means of a control device 12, an electric drive 13 and a driven by the drive 13 pump 14 for conveying the flowable adhesive.
  • the drive 13 is adjustable in its speed.
  • the pump 14 is a gear pump.
  • the drive 13 and the pump 14 are arranged below the pre-melter 4.
  • the drive 13 is connected via a coupling with the pump 14.
  • the respective transport bracket 8 has a front formed as a plate jaw 15 and a rear, also formed as a plate jaw 16.
  • the jaws 15, 16 of the respective transport clamp 8 are moved synchronously in the X direction.
  • the respective rear jaw 16 is not movable in the Y direction. Only the front jaw 15 is movable in the Y direction and opposite, so that the distance between the two jaws 15, 16 for the purpose of clamping the book block 3 between the jaws 15, 16 can be changed.
  • the respective rear jaw 16 forms on the side facing the front jaw 15 a plane spanned by the coordinates X and Z, which is substantially, with minor deviations on the same plane as a contact surface 17 of a fixed investor 18 of the application station 7.
  • This Feeder 18 forms a guide of the book block 3 on a gun 19 of the application station. 7
  • control device 12 With the control device 12 are a sensor 20 for detecting the transport speed of the book block 3 in the X direction, a sensor 21 for detecting the beginning and the end of the respective book block 3, with respect to the X direction, and a valve element designed as a control element 22 for the supply of the flowable adhesive to the applicator head 19 and, if necessary, a pressure sensor 23 via a connecting line 24 operatively connected.
  • the flowable adhesive is from the pre-melter 4 via the supply line 5 volumetrically from the pump 14, which means the drive 13 is driven, and is controlled by the control device 12, supplied. About the return line 6 of the funded by the pump 14 adhesive during the period during which no adhesive is applied, returned to the pre-melter 4.
  • Fig. 3 shows a schematic diagram of a book block 3 and its most important dimensions, further an adhesive application 29.
  • the application thickness 30 of the adhesive can be adjusted within a range of 0.05 to 4 mm.
  • the application thickness is preferably in the range of 0.3 to 0.6 mm for PUR.
  • the distance from the start of order 31 to the front 32 of the book block 3 and the distance from the order end 33 to the back 34 of the book block 3 can be set between -5 to 100 mm. Preferably, these values are between 0 and 15 mm.
  • the application width thus the dimension in the Y direction, corresponds essentially to the book block thickness and is in the range of 1 to 80 mm.
  • the maximum expected production speed of the book block 3 can be set between 1000 per hour and about 6000 per hour. The system described can also be used for significantly higher production speeds. Then the change of the application width is limited by adjustment of the slider 26 between two subsequent book blocks.
  • the Fig. 4 to 7 illustrate details of the applicator head 19 with an adjusting mechanism 25 for adjusting the outlet cross-section 11 of the application nozzle 10.
  • a cover which is designed as a slide 26, covers the outlet cross-section 11 more or less.
  • the slider 26 is moved by means of the adjusting mechanism 25 in the Y direction and opposite.
  • the respective book block 3 is moved linearly in the X direction over the application nozzle 10 designed as a slot nozzle.
  • the flowable adhesive is transferred via the outlet cross section 11 on the spine 2.
  • the movable slide 26 is guided as free of play by a linear guide 27 and actuated via the adjusting mechanism 25 which is driven by a drive 28, and in each case adjusted so that the Length Y of the outlet cross section 11 substantially corresponds to the book block thickness.
  • the application nozzle 11 has a stationary nozzle body 36. This has an inlet opening 37, a flow channel 38 and a nozzle slot 39. As the adhesive is conveyed through the application nozzle 10, the flowable adhesive passes from the inlet opening 37 into the flow channel 38 and from there to the nozzle slot 39. The flowable adhesive is dispensed through an exit port 40 of the nozzle slot defining the exit section 11. The outlet opening 40 is arranged in an outer region of the nozzle body 36.
  • the application nozzle 10 further comprises the slide 26, which is formed as a plate, and which is movable relative to the nozzle body 36 in the longitudinal extent of the outlet opening 40 via the latter by means of the adjusting mechanism 25 and the outer region of the nozzle body 36 contacted, for variably covering the outlet opening 40th
  • the slider 26 is pressed against the nozzle body 36 under the action of spring force for optimum sealing of the outlet opening 40 in its area covered by the slider 26.
  • the nozzle body 36 is designed such that the longitudinal extent LS of the flow channel 38 is at least as long as the longitudinal extension LD of the nozzle slot 39.
  • the dimension LS is slightly larger than the dimension LD.
  • the inlet opening 37 in the region of an end 41 of the flow channel 38 is operatively connected thereto.
  • the other end 42 of the flow channel ends in the region of an end 43 of the nozzle slot 39.
  • the outlet opening 40 is by means of the slider 26 from the other end 44 of the nozzle slot 39 starting dablendbar.
  • the flow channel 38 has, in the region of the nozzle slot 39, a cross-sectional area which is continuously variable over the length of the flow channel 38, the larger cross-sectional area facing the inlet opening 37.
  • the flow channel 38 and the nozzle slot 39 each have a fixed volume.
  • the flow channel 38 in the region of the nozzle slot on a over the local length of the flow channel 38 continuously variable cross-sectional area. It does not have to be linearly variable; will in normal case be a simply curved curve.
  • This cross-sectional area of the flow channel 38 decreases towards the end 42 of the flow channel.
  • the shape of the variable cross-sectional area of the flow channel 38 is identical.
  • the cross-sectional area of the flow channel 38 has the shape of a semicircle.
  • the nozzle slot 39 has such a shape over its length that the width BD of the nozzle slot 39 between the flow channel 38 and the outlet opening 40 of the nozzle slot 39 is constant.
  • the depth (extension in the Z direction) of the nozzle slot 39 decreases from the other end 44 to one end 43. This depth is variable along a single curved curve.
  • the outlet opening 40 and the nozzle slot 39 are arranged horizontally, the flow channel 38 is arranged slightly inclined with respect to the horizontal.
  • the nozzle body 36 has two strip-shaped nozzle body parts 45, 46. These are by means of screws 47 which pass through the nozzle body part 45 and are screwed into threaded bores 53 of the nozzle body part 46, firmly connected to each other. Between the two nozzle body parts 45 and 46 of the flow channel 38 and the nozzle slot 39 are formed. The flow channel 38 and the nozzle slot 39 are formed exclusively by depressions in the nozzle body part 46. Incidentally, the mutually facing surfaces of the two nozzle body part 45, 46 are flat, so that the nozzle body parts 45, 46 in the interconnected state in the region of these flat surfaces are close to each other.
  • a feed to the inlet opening 37 this feed being designed as an angle channel 48, is formed in the nozzle body part 45.
  • the angle channel 48 opens in the region of the end 41 of the flow channel 38 in one of the outlet opening 40 of the nozzle slot 39 facing away from the area in the flow channel 38th
  • the contact surface 17 of the armature 18 is arranged perpendicular to the longitudinal extent of the outlet opening 40 laterally of the outlet opening 40.
  • the slider 26 has on its side facing the feeder 18 a contact surface 49, which is parallel to a central region of the contact surface 17 of the feeder 18 in a central region. On the side, this respective middle area is connected to insertion and extension slopes of the contact surfaces 17 and 49.
  • the feeder 18 and the slider 26 thus serve to guide the book block 3 as it is conveyed over the nozzle body 36. The insertion of the book block 3 is facilitated by the converging insertion surfaces - abutment surfaces 17, 49 -.
  • the nozzle body part 46 is provided in the region of its opposite end faces with stepped holes 50 for receiving screws 51 which are screwed into threaded bores of a base 52 of the applicator head 19, for fixing the stationary nozzle body 36th
  • the concrete structure of the application nozzle 10 designed as a slot nozzle is in the FIGS. 20 to 24 illustrated for the second preferred embodiment.
  • the second embodiment according to the FIGS. 20 to 24 differs only by the changed geometry of flow channel 38 and nozzle slot 39th Den FIGS. 20 to 24 It can be seen that the flow channel 38 in the region of the nozzle slot has over the local length of the flow channel 38 continuously variable cross-sectional area. The change does not have to be linear; will normally be a simply curved curve. This cross-sectional area of the flow channel 38 decreases towards the end 42 of the flow channel.
  • the shape of the variable cross-sectional area of the flow channel 38 is identical.
  • the cross-sectional area of the flow channel 38 has the shape of a semicircle.
  • the cross-sectional area of the flow channel 38 is at the other end 42 of the flow channel 38 at most half as large as the cross-sectional area of the flow channel 38 at one end 41st
  • the nozzle slot 39 has such a shape along its length that the depth (Z-direction extent) of the nozzle slot 39 between the ends 43 and 44 is constant.
  • the width BD of the nozzle slot 39 thus the extension of the nozzle slot 39 in the X direction, increases from the other end 44 to one end 43.
  • This width is variable along a single curved curve.
  • This width is, for example, 0.32 mm in the section plane XXI-XXI, 0.35 mm in the section plane XXII-XXII, 0.5 mm in the section plane XXIII-XXIII and 0.53 mm in the section plane XXIV-XXIV, and 0.53 mm in the section plane constant depth of the nozzle slot of 1 mm over its length.
  • Fig. 25 illustrates the basic structure of the perfect binding machine 1.
  • the transport brackets 8 of the perfect binding machine are attached to the traction means 9 and are moved in the direction X at a defined speed. As a rule, this speed remains constant during production.
  • the book blocks 3 are clamped in the transport clamps 8 and moved with the transport clamps 8.
  • the speed of the book blocks 3 is detected by the sensor 20 and forwarded to the control device 12 for processing.
  • the book front edge assigned to the front side 32 and the book trailing edge assigned to the rear side 34 are detected by the sensor 21 and forwarded to the control device 12 for processing.
  • the perfect binding machine transmits the signals for the book block thickness in a suitable manner to the control device 12 so that it can unambiguously assign the book block thicknesses to be processed to the book block to be processed. It is crucial that the control device 12 has the speed data and the book block strength and can determine the time start and the end of each adhesive application. How the required data in the control device 12, may also be designed differently, as shown or described.
  • the adhesive is melted in Vorschmelz réelle 4 and kept ready in flowable form.
  • the pump 14 conveys the adhesive held ready in the pre-melter 4 via the supply line 5 and the actuator 22 or valve either to the application nozzle 10, during the application of adhesive to the spine 2, or via the return line 6 back to the pre-melter 4.
  • the adhesive pressure is from optional pressure sensor 23 detected immediately before the actuator 22 and transmitted to the control device 12.
  • the pressure sensor 23 is not mandatory for a satisfactory operation of the system and can be omitted for cost reasons or only temporarily installed.
  • the slider 26 of the application nozzle 10 for the adjustment of the application width of adhesive is actuated, adjusted and adjusted via the adjusting mechanism 25 and the drive 28.
  • the signal and the drive from the drive 28 can be made available either by the control device of the perfect binding machine or by the control device 12 of the device 1.
  • the actuator 22 for supplying the adhesive to the applicator nozzle 10 is actuated by the controller 12 such that the beginning of each application of adhesive and the end of each application of adhesive correspond exactly to the predetermined values.
  • the adjusting element 22 is designed as a changeover valve. In a first position of the adjusting element 22, a flow from the supply line 5 to the application nozzle 10 is free and the return line 6 is blocked.
  • the supply of the adhesive to the application nozzle 10 is interrupted and the supply line 5 is connected via a built-in control element 22 throttle 35 with the return line 6.
  • this throttle or a throttle element can also be installed as a separate component in the return line 6.
  • the drive 13 of the pump 14 is controlled by means of all the signals described above by the control device 12 in a manner that the adhesive application on the book blocks 3 has a clearly defined beginning, a clearly defined end and an even distribution over the order length. This is done by a substantially volumetric delivery of the adhesive by means of the pump 14.
  • the theoretical volume flow of adhesive during the job is determined from the speed of the moving book block 3, the application width and the application thickness of the adhesive to the book block 3.
  • the order strength must be supplied as a parameter of the control device 12. This is usually done via an input terminal that is operated by the user of the device 1.
  • the standard value for the application thickness can also be supplied by the adhesive binding machine or by a superordinate control of the control device 12.

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  • Coating Apparatus (AREA)
EP18164294.3A 2018-03-27 2018-03-27 Dispositif d'application d'une matière coulante à un substrat Active EP3546070B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18164294.3A EP3546070B1 (fr) 2018-03-27 2018-03-27 Dispositif d'application d'une matière coulante à un substrat
JP2019010383A JP7335075B2 (ja) 2018-03-27 2019-01-24 基材に流動性物質を塗布する装置
US16/355,831 US11071997B2 (en) 2018-03-27 2019-03-17 Device for applying a flowable substance to a substrate
CN201910238199.4A CN110303791B (zh) 2018-03-27 2019-03-27 用来将可流动材料涂覆到基底上的设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18164294.3A EP3546070B1 (fr) 2018-03-27 2018-03-27 Dispositif d'application d'une matière coulante à un substrat

Publications (2)

Publication Number Publication Date
EP3546070A1 true EP3546070A1 (fr) 2019-10-02
EP3546070B1 EP3546070B1 (fr) 2021-08-11

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EP18164294.3A Active EP3546070B1 (fr) 2018-03-27 2018-03-27 Dispositif d'application d'une matière coulante à un substrat

Country Status (4)

Country Link
US (1) US11071997B2 (fr)
EP (1) EP3546070B1 (fr)
JP (1) JP7335075B2 (fr)
CN (1) CN110303791B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8728824B2 (en) 2011-06-22 2014-05-20 Quest Diagnostics Investments Inc. Mass spectrometric determination of fatty acids

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589987A1 (fr) 1991-06-14 1994-04-06 Eastman Kodak Co Filieres.
DE10023895A1 (de) * 2000-05-18 2001-11-22 Inatec Innovative Auftragstech Vorrichtung zum Auftragen von Klebstoffen
DE10320515A1 (de) 2003-04-28 2004-11-18 Franz-Josef Landen Klebstoffauftragsystem, volumetrisch, für die Buchherstellung
US20070224360A1 (en) * 2006-03-24 2007-09-27 Nitto Denko Corporation Method for coating with coating liquid, coating apparatuses for use therein, and method for designing the same
EP2629983A1 (fr) * 2010-10-20 2013-08-28 K.G.S. S.r.l. Tête de distribution d'adhésif pour machines à relier et machine comportant la tête
EP2684702A2 (fr) 2012-07-10 2014-01-15 Heidelberger Druckmaschinen AG Dispositif d'application d'adhésif et procédé de fonctionnement d'un tel dispositif

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337768A1 (de) * 2003-08-14 2005-03-17 Nordson Corporation, Westlake Düsen- und Filteranordnung sowie System zum Auftragen von Fluid mit festen Partikeln auf ein Substrat
ES2426102T3 (es) * 2010-04-13 2013-10-21 Nordson Corporation Dispositivo para descargar fluido en un substrato
ES2834091T3 (es) * 2013-12-18 2021-06-16 Nordson Corp Dispositivo y método para la aplicación intermitente de un material líquido, en particular adhesivo en espuma, sobre un sustrato

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589987A1 (fr) 1991-06-14 1994-04-06 Eastman Kodak Co Filieres.
DE10023895A1 (de) * 2000-05-18 2001-11-22 Inatec Innovative Auftragstech Vorrichtung zum Auftragen von Klebstoffen
DE10320515A1 (de) 2003-04-28 2004-11-18 Franz-Josef Landen Klebstoffauftragsystem, volumetrisch, für die Buchherstellung
US20070224360A1 (en) * 2006-03-24 2007-09-27 Nitto Denko Corporation Method for coating with coating liquid, coating apparatuses for use therein, and method for designing the same
EP2629983A1 (fr) * 2010-10-20 2013-08-28 K.G.S. S.r.l. Tête de distribution d'adhésif pour machines à relier et machine comportant la tête
EP2684702A2 (fr) 2012-07-10 2014-01-15 Heidelberger Druckmaschinen AG Dispositif d'application d'adhésif et procédé de fonctionnement d'un tel dispositif

Also Published As

Publication number Publication date
US11071997B2 (en) 2021-07-27
JP7335075B2 (ja) 2023-08-29
US20190299241A1 (en) 2019-10-03
JP2019171365A (ja) 2019-10-10
EP3546070B1 (fr) 2021-08-11
CN110303791B (zh) 2022-05-13
CN110303791A (zh) 2019-10-08

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