EP0577136B1 - Vorrichtung zum Auftragen von Klebstoff - Google Patents

Vorrichtung zum Auftragen von Klebstoff Download PDF

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Publication number
EP0577136B1
EP0577136B1 EP93110598A EP93110598A EP0577136B1 EP 0577136 B1 EP0577136 B1 EP 0577136B1 EP 93110598 A EP93110598 A EP 93110598A EP 93110598 A EP93110598 A EP 93110598A EP 0577136 B1 EP0577136 B1 EP 0577136B1
Authority
EP
European Patent Office
Prior art keywords
shaft
application
adhesive
discharge aperture
lower discharge
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.)
Expired - Lifetime
Application number
EP93110598A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0577136A1 (de
Inventor
Rainer Miller
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.)
Friz Kaschiertechnik GmbH
Original Assignee
Friz Maschinenbau GmbH
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
Priority claimed from DE9208951U external-priority patent/DE9208951U1/de
Priority claimed from DE9305377U external-priority patent/DE9305377U1/de
Application filed by Friz Maschinenbau GmbH filed Critical Friz Maschinenbau GmbH
Publication of EP0577136A1 publication Critical patent/EP0577136A1/de
Application granted granted Critical
Publication of EP0577136B1 publication Critical patent/EP0577136B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • 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

Definitions

  • the present invention relates to a device for applying adhesive, with a heatable storage shaft for the adhesive with a lower dispensing opening which can be closed by at least one adjusting slide, and an application doctor arranged in the region of the dispensing opening.
  • devices of the generic type which work with an application doctor blade which is fed via a heated storage shaft.
  • Such a device is known for example from DE-27 37 728.
  • at least one adjustment slide is provided in such devices, which is manually adjusted to the desired application width.
  • devices of the generic type Compared to devices working with slot dies, application rollers or pouring processes, devices of the generic type have the advantage that their construction is relatively simple from a technical point of view.
  • the storage shaft has a substantially constant cross-section over its height and consists of at least two shaft parts which are closely connected to one another along at least one separating plane running approximately parallel to the shaft axis via a quickly releasable connecting device.
  • the invention is based on the idea of designing the device in such a way that in particular the storage shaft can be dismantled in a simple manner without tools and above in addition, the surfaces that come into contact with adhesive are as flat as possible, that is to say are formed without shoulders, edges, undercuts or the like. Even surfaces can be formed in a technically simple manner for the areas that come into contact with adhesive if the storage shaft according to the invention has an essentially constant cross section over its height.
  • the quick-release connection device can be designed in a variety of ways. For example, if screw connections are used for the manhole parts, toggle arrangements can be provided which enable easy and quick loosening by hand. However, it is also possible to design the connecting device with eccentric clamping devices, toggle lever tensioning devices or the like in order to realize a quickly releasable connection of the shaft parts.
  • the storage shaft consists of only two shaft parts, since in such a case the connecting device can be designed to be technically simple.
  • the two shaft parts can be of the same design or have a different shape.
  • a particularly simple storage slot design is achieved if the clear cross section is rectangular.
  • the one shaft part is advantageous to design the one shaft part as an essentially U-shaped channel which forms three adjoining side walls of the shaft.
  • the other shaft part can be designed as a flat plate, which covers the opening of the U-shaped channel to form the fourth side wall of the shaft.
  • a particularly problem-free disassembly of the storage shaft is achieved if each of the shaft parts has its own heating device, which is separate from the other shaft part, each with its own separate power supply. In such a case, with appropriate dimensioning of the supply line lengths, no electrical connection or disconnection work needs to be carried out when cleaning the shaft or when changing from one type of adhesive to the other.
  • the device is equipped with devices for level control of the adhesive, which protrude into the storage shaft.
  • These devices can be designed and arranged in a wide variety of ways. It is advantageous if the device is equipped with a cover which covers the filling opening for the adhesive which is arranged at the upper end of the storage shaft and opposite the dispensing opening. In such a case, it is advantageous to attach the level control devices to the cover, since when the cover is loosened and removed, the level control devices are automatically removed from the area of the storage shaft so that it can be easily dismantled.
  • the cover from insulating material, such as Teflon or the like.
  • the storage shaft can be heated in a variety of ways. Heating with heating cartridges, which can be inserted into the openings provided in the shaft parts, has proven effective. In order to ensure absolutely identical temperature conditions in all shaft areas, it is expedient, if necessary, also to apply the doctor blade and / or other elements in the area of the to heat the lower outlet opening provided for the adhesive.
  • the application doctor blade can be designed in a wide variety of ways for the respective application. It is advantageous if the application squeegee on its order side, i.e. the side facing the surface to be coated is equipped with a smoothing surface.
  • a closing device provided in the area in the lower dispensing opening, with which the lower dispensing opening can be closed regardless of the position of the adjusting slide or sliders, enables simple operation when the system is switched off or on again.
  • the new closing device reduces the previous double function of the known adjusting slide, ie closing the dispensing opening and setting the application width, to the function of regulating the adhesive application width and with a quick one
  • the preset application width of the adhesive application remains unchanged in the event of an abrupt stop or restart, since only very short adjustment paths are required to close or reopen the lower dispensing opening.
  • a particularly simple embodiment of the closure device according to the invention is obtained if the application squeegee is displaced vertically by pneumatic lifting cylinders, in particular short-stroke cylinders, under guidance in elongated holes, against the closure plate forming a surface, as a result of which a rapid closing or reopening of the lower dispensing opening is possible.
  • the required travel of the application doctor blade is very small, which explains the very fast closing or reopening of the dispensing opening.
  • a further simple embodiment of the closing device is obtained if the closing plate forming a surface is horizontally displaced by means of pneumatic lifting cylinders, in particular short-stroke cylinders or the like, against the longitudinal edge of the application doctor blade, as a result of which the lower dispensing opening can be closed or opened again very quickly.
  • a particularly advantageous embodiment of the device according to the invention for applying adhesive consists in providing the parts in which closure occurs relative to one another with an anti-stick coating, for example a Teflon coating or the like.
  • an anti-stick coating for example a Teflon coating or the like.
  • the device for applying adhesive according to the invention has a storage shaft 1 which has a constant cross section over its height.
  • the storage shaft 1 is formed by two shaft parts 2 and 3, which adjoin one another along a parting plane 4 running parallel to the shaft axis.
  • the shaft part 3 is designed as an essentially U-shaped channel which forms three adjoining side walls 5, 6 and 7 of the shaft, which in the present exemplary embodiment are integrally connected to one another.
  • the other shaft part 2 in turn is essentially designed as a flat plate, which covers the U-shaped channel formed by the side walls 5, 6 and 7 of one shaft part 3 and in this way forms the fourth side wall 8 of the storage shaft 1.
  • the two shaft parts 2 and 3 are tightly connected to one another by a connecting device (not shown in the figures) in the region of the parting plane 4.
  • a connecting device (not shown in the figures) in the region of the parting plane 4.
  • toggles 9 are shown in FIG. 2, via which the connecting device can be released and thus one shaft part 3 can be lifted off the other shaft part 2.
  • the shaft part 2 On the side facing away from the shaft part 3, the shaft part 2 has two tabs 10, via which the device is articulated on the respective machine (not shown).
  • a closure strip 12 is fastened at the lower end of the shaft part 2 by means of screws 11.
  • the shaft part 3 in turn carries at its lower end an applicator knife 13 which, together with the sealing strip 12, forms a lower discharge opening 14 for the storage shaft 1.
  • this dispensing opening is closed by a squeegee slide 15, which carries at one end (cf. FIG. 1) a handle 16 by means of which it is pulled out to the left in order to open the dispensing opening 14 in the direction of arrow 17 in FIG. 1 can be.
  • the doctor blade 13 is fastened to the shaft part 3 with three nuts 18. These nuts 18 each act on a spring washer 19, which is supported on the applicator blade 13 on the side facing away from the shaft part 3.
  • each nut 18 is screwed onto a bolt 20, which is seated in a threaded bore of the shaft part 3.
  • the application doctor 13 is each equipped with bores 21, the diameter of which is considerably larger than the diameter of the bolt 20. In this way, the application doctor 13 can move vertically downwards and upwards on the shaft part 3 to adjust the adhesive layer thickness be moved.
  • the device To adjust the position of the application doctor 13, the device has two adjustment aids 22 of known design, each of which is equipped with an adjusting screw 23, by means of which the application doctor 13 can be finely adjusted.
  • the application doctor blade 13 is equipped on its application side facing the workpiece, not shown, with a smoothing surface 31 (see FIG. 2).
  • the shaft parts 2 and 3 and the application doctor 13 are each equipped with bores 24. These holes are used in a known manner for receiving heating cartridges and together form the heating device of the device.
  • the filling opening 25 opposite the dispensing opening 14 at the upper end of the storage shaft 1 is covered with a cover 26.
  • this cover is fastened to the storage shaft with easily detachable knurled nuts 27.
  • the cover 26 preferably consists of an insulating material, such as Teflon, and carries various devices, which are shown schematically in FIG. 1.
  • a feed line 28 for the adhesive is arranged in the cover 26, via which the adhesive is fed into the storage shaft 1 in a known manner.
  • the cover 26 is also equipped with a protective gas connection 29, via which nitrogen, for example, can be fed into the upper part of the storage shaft 1 which is not filled with adhesive.
  • the lid also carries probes 30 and 31 for level sensing, ie for measuring the adhesive level within the storage well. These probes can be used, for example, as capacitive probes or control the level via a temperature difference measurement.
  • the fill level can also be scanned in a different way.
  • each shaft part it is advantageous for each shaft part to have a heating device separate from the other shaft part, each with its own separate power supply.
  • this is achieved in a simple manner in that the heating cartridges in the bores 24 of each shaft part 2 or 3 are combined and connected to the power supply via a common line.
  • a second embodiment of the device according to the invention comprises a front housing side 2 and a rear housing side 3, which form a storage slot 1.
  • a heating device 20 for heating the adhesive is integrated in the front housing side 2 and the rear housing side 3.
  • the storage shaft 1 is closed at the upper end with the cover 4 and has a lower discharge opening 1a at the lower end.
  • an application squeegee 5 is displaceably attached to the front housing side 2 by means of a plurality of bolts 18, disc springs 19 underneath, and Teflon-coated thrust washers 17, which are seated on the outer side of the application squeegee 5.
  • An adjusting screw 14 is used to adjust the adhesive thickness on the material web to be provided with adhesive.
  • a holding strip 7 is firmly connected to the rear housing side 3.
  • an L-shaped closing plate 8 is fastened by means of a number of screws 21 in such a way that the closing plate 8 presses against the holding strip 7 with slight pretension and lies flat against it.
  • the width of the lower discharge opening 1 a formed by the sealing plate 8 and the application doctor 5 is limited by an adjusting slide 6.
  • the adjusting slide 6 is slidably fitted between the holding bar 7 parallel to the plane of the material web.
  • the closing mechanism used to close the lower dispensing opening 1a is formed in this first exemplary embodiment by the movable application doctor 5 and the closing plate 8 fixedly attached to the housing. From Fig. 4 it can be seen that the doctor blade 5 is guided by a plurality of bolts 18 vertically with respect to the front side 2 of the housing. On the application knife 5 extending across the width, two lifting cylinders 22 are each provided with articulated bearings 23, which each engage in bolts 24 fixedly attached to the application doctor 5. The lifting cylinders 22 are firmly screwed to the front housing side 2.
  • the adjusting slide 6 is provided with a handle 26, and an adhesive application width marking 25.
  • a solid round rod 15 is arranged under the lower dispensing opening of the device for applying an adhesive so that the material web can slide under the sealing plate 8 and the adhesive is applied to the lower dispensing opening by means of the application doctor 5 on the material web.
  • the pneumatically operated lifting cylinders 22 are actuated for this purpose. These known lifting cylinders are pressurized with compressed air, as a result of which the application squeegee 5 is moved vertically by a very short travel path to the material web.
  • the application doctor 5 abuts the closing plate 8 with its beveled longitudinal edge 5a facing the dispensing opening and bends it slightly resiliently downwards. As a result, the lower discharge opening of the storage shaft 1 is sealed. On the web of material, parallel to the longitudinal edge 5a of the application doctor 5, the adhesive application is completed in a straight line over the entire width.
  • the lifting cylinders 22 are in turn pressurized with compressed air and pull the application doctor back into its upper starting position.
  • the lower dispensing opening 5 is opened again over the entire predetermined application width of the adhesive application.
  • FIG. 8 shows an enlarged illustration of the second exemplary embodiment with a movable application doctor 5 according to FIG. 5 with the lower output opening of the storage shaft 1 open.
  • FIG. 9 again shows an enlarged section of the second exemplary embodiment with a movable application doctor 5 according to FIG. 5, but the lower dispensing opening of the storage shaft 1 is closed here by the application doctor 5.
  • the bend of the closure plate 8 is drawn exaggerated.
  • FIGS. 6 and 7 A third embodiment of the device according to the invention is shown in FIGS. 6 and 7.
  • the applicator knife 5 is displaceably connected to the adjusting screw 14 on the front housing side 2 of the device according to the invention with the bolts 18 only for setting the adhesive application thickness.
  • the lower closing plate 8 is connected to the retaining strip 7 by means of screws 10 which lie in elongated holes which run parallel to the material web transport direction.
  • a strip 12 is firmly screwed to the closure plate 8 by means of screws 11.
  • a plurality of lifting cylinders 13 are attached to this bar 12, which extends over the entire width of the lower dispensing opening 1a.
  • the strip 12 extends over the entire width of the device according to the invention on the rear lower edge of the rear housing side 3 and is attached to be horizontally displaceable.
  • the lifting cylinders 13 are pressurized with compressed air, as a result of which the bar 12 moves horizontally toward the application doctor 5, whereby the closure plate 8 attached to it abuts the bevel 5a of the application doctor 5 and bends slightly resiliently downward.
  • the lower discharge opening 1a of the storage shaft 1 becomes very large quickly closed.
  • the lifting cylinders 13 are pressurized with compressed air so that they move back into their original position, as a result of which the closing plate 8 releases the lower discharge opening 1 a of the storage shaft 1.
  • the material web sliding on the round rod 15 is provided with an adhesive application which has a straight approach perpendicular to the transport direction of the material web.

Landscapes

  • Coating Apparatus (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP93110598A 1992-07-03 1993-07-02 Vorrichtung zum Auftragen von Klebstoff Expired - Lifetime EP0577136B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9208951U DE9208951U1 (es) 1992-07-03 1992-07-03
DE9208951U 1992-07-03
DE9305377U 1993-04-08
DE9305377U DE9305377U1 (de) 1993-04-08 1993-04-08 Vorrichtung zum Auftragen von Klebstoff mit Verschließeinrichtung

Publications (2)

Publication Number Publication Date
EP0577136A1 EP0577136A1 (de) 1994-01-05
EP0577136B1 true EP0577136B1 (de) 1997-01-08

Family

ID=25959668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93110598A Expired - Lifetime EP0577136B1 (de) 1992-07-03 1993-07-02 Vorrichtung zum Auftragen von Klebstoff

Country Status (4)

Country Link
EP (1) EP0577136B1 (es)
AT (1) ATE147289T1 (es)
DE (1) DE59305026D1 (es)
ES (1) ES2095525T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111434389A (zh) * 2019-01-11 2020-07-21 汉达精密电子(昆山)有限公司 自动点胶机构

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1311872B1 (it) * 1999-11-16 2002-03-19 Hip High Ind Performances Srl Testata di spalmatura,particolarmente per materiale termoplastico.
US7622004B2 (en) * 2003-03-03 2009-11-24 Toray Industries, Inc. Slit die, and method and device for producing base material with coating film
US7092855B2 (en) * 2003-05-30 2006-08-15 Avery Dennison Corporation Thermo-stable coating die design method and apparatus
US20060090322A1 (en) * 2004-10-29 2006-05-04 3M Innovative Properties Company Coating die having quick assembly features
FR2974745B1 (fr) * 2011-05-06 2013-04-26 Commissariat Energie Atomique Dispositif et procede de depot par enduction a la racle d'encre a base de cuivre et d'indium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737728A1 (de) * 1977-08-22 1979-07-12 Friz Gmbh & Co Helmut Klebstoff-auftragsstation
US4513915A (en) * 1982-12-06 1985-04-30 The Kohler Coating Machinery Corporation Nozzle construction for coating equipment
US4697542A (en) * 1985-05-13 1987-10-06 The Kohler Coating Machinery Corporation Adjustable nozzle for coating equipment
DE3721593A1 (de) * 1987-06-30 1989-01-26 Henning J Claassen Vorrichtung zum auftragen von fluessigen klebstoffen auf ein substrat
DE9208951U1 (es) * 1992-07-03 1992-11-19 Friz Maschinenbau Gmbh, 7102 Weinsberg, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111434389A (zh) * 2019-01-11 2020-07-21 汉达精密电子(昆山)有限公司 自动点胶机构
CN111434389B (zh) * 2019-01-11 2021-11-19 汉达精密电子(昆山)有限公司 自动点胶机构

Also Published As

Publication number Publication date
EP0577136A1 (de) 1994-01-05
ATE147289T1 (de) 1997-01-15
DE59305026D1 (de) 1997-02-20
ES2095525T3 (es) 1997-02-16

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