EP1502888B1 - Method and apparatus for automatic adhesive transfer - Google Patents
Method and apparatus for automatic adhesive transfer Download PDFInfo
- Publication number
- EP1502888B1 EP1502888B1 EP04017641A EP04017641A EP1502888B1 EP 1502888 B1 EP1502888 B1 EP 1502888B1 EP 04017641 A EP04017641 A EP 04017641A EP 04017641 A EP04017641 A EP 04017641A EP 1502888 B1 EP1502888 B1 EP 1502888B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- material web
- contact adhesive
- adhesive beads
- application device
- 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
Links
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- 239000000853 adhesive Substances 0.000 title claims abstract description 59
- 238000012546 transfer Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims abstract description 103
- 239000011324 bead Substances 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 6
- 239000012876 carrier material Substances 0.000 claims abstract description 3
- 230000002940 repellent Effects 0.000 claims description 2
- 239000005871 repellent Substances 0.000 claims description 2
- 239000004821 Contact adhesive Substances 0.000 claims 22
- 238000000926 separation method Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 abstract description 14
- 239000011111 cardboard Substances 0.000 abstract description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 45
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Images
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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/14—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a travelling band
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
- B05C1/165—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work using a roller or other rotating member which contacts the work along a generating line
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
- D21H19/68—Coatings characterised by a special visual effect, e.g. patterned, textured uneven, broken, discontinuous
Definitions
- the invention relates to a method and a device for mechanical adhesive transfer to a relatively moving web or a sequence of articles to be provided with an adhesive surface or a glued by-product, in particular of paper or board webs.
- Querleimwerke known for high-speed paper webs on rotary printing machines, which apply a liquid adhesive trace on a paper or board web. This is accomplished by guiding the paper web around a rotating application cylinder, on which outlet valves are arranged, which apply a defined amount of the liquid adhesive to the paper web in cycles per revolution of the application cylinder.
- the control of these Querleimwerke is usually done via a synchronous drive, which is connected to an upstream printing machine or the like.
- the claimed application technique has the advantage that instead of liquid adhesives, very small and dimensionally stable pressure-sensitive adhesive drops are used.
- the problems of safe handling, control, nozzle and line clogging, cleaning, etc. associated with liquid adhesives can thus be circumvented.
- the pressure-sensitive adhesive drops provide immediate adhesion and adhesion without cooling and drying times.
- the pressure-sensitive adhesive drops of the transfer adhesive can alternatively be transferred directly or indirectly to a material web moved relative to the application device. This can be done to a variety of purposes and process requirements.
- the adhesive is applied directly to the material web after detachment from the support and is then available as an open adhesive surface for a wide variety of tasks.
- the direct order can be made directly from the carrier to the material web or indirectly via an intermediate transmission element.
- the adhesive is first applied to a by-product to be bonded to the material web and then to the material web with it.
- the applicator has a wide range of uses including any types and relative speeds of webs as well as application techniques.
- a material web can be, for example, a more or less fast-moving paper, film or board web or a continuously or intermittently moved sequence of individual objects, eg packaging blanks, cartons or the like, in the sense of a material flow.
- the application device is arranged stationary, with the adhering to Material on the applicator as moving material web or material flow past.
- the kinematic mapping may also be reversed with the applicator moving relative to the material. This is z. As with large-sized materials or objects of the case, which are at rest or can move at a low speed.
- the adhesive may be applied directly and openly to the web of material for subsequent adhesive bonding of portions of the web, e.g. packaging slices of a set-up box or of folded or cut sides of a paper web.
- portions of the web e.g. packaging slices of a set-up box or of folded or cut sides of a paper web.
- by-products e.g. Samples, data carriers or the like.
- Glued to the web which is also possible later on a previously applied glue line or adhesive surface.
- material web This includes both the mentioned running paper webs, etc., material flows of individual items, as well as the transient or stationary arrangement of individual materials or objects.
- the pressure-sensitive adhesive drops are present in a grid structure on the support.
- This has the advantage that when the carrier is pressed together with the material web, the shear-proof pressure-sensitive adhesive drops are removed from the carrier in a precisely controllable amount and local distribution and transferred to the material web or to the by-product. In this case, exactly as many pressure-sensitive adhesive drops are removed as are covered by the pressed-on material or by-product. Pressure-sensitive adhesive drops that do not come into contact with the material or by-product remain on the carrier. As a result, precisely limited to the contact surface and thus accurately controlled adhesive surfaces are transmitted. This also ensures a uniform full-surface bonding, which is not achievable with the usual adhesive beads.
- the pressure-sensitive adhesive drops have a high cohesion, whereby they have a high dimensional stability, which prevents them from merging with adjacent pressure-sensitive adhesive drops and form larger drops, as is the case with liquid adhesives. Furthermore, the pressure-sensitive adhesive drops to the carrier have a relatively low adhesion, which is dimensioned so that the drops adhere strongly enough on the carrier so as not to fall off even at high carrier movement speeds, but when compressing the carrier with the material web to which they have a higher adhesion, detach from the carrier and transferred to the web or the by-product.
- the carrier is fed by a feed device and brought by means of a feed device into contact with the material web and is further moved by a transport drive during rest periods and / or during the web contact.
- the carrier can be pressed in variable clock rates or permanently on the relatively moving material web.
- the device described is subject to less wear due to lower running speeds, and the adhesion of the adhesive drops to the carrier ensures that unresolved pressure-sensitive adhesive drops remain on the carrier, which is rolled up as used material on the take-up roll and thus do not produce any impurities or false bonds ,
- the device is far less maintenance intensive and universal use than previously known longitudinal and transverse gluing plants.
- control and the drive of the mechanical application device are preferably designed such that there is an independent drive for the application device, which is controlled, for example, by optical scanning of material identifiers on the relatively moving material web. As a result, can be dispensed with complex synchronization drives.
- the drive may be preferably designed as a combination of some piezo elements to an activator or in another convenient form.
- the material web can preferably extend in sheet guide with tension rollers under the pressure roller or be guided over a suction roller. This ensures that the material web retains a discrete relative to the stroke direction of the pressure roller layer, whereby even with a small stroke of the pressure roller is ensured that no contact between the carrier and web exists.
- a statically arranged pressure roller is provided in a further embodiment of the invention.
- the material web is guided, for example, stretched over a Usersölbbaren or undeliverable substrate, wherein the web is pressed at each buckling of the substrate to the pressure roller.
- the applicator is provided for the adhesive transfer to by-products and their subsequent attachment to the web.
- the by-products can be applied to a previously provided with adhesive drops material web.
- devices for the mechanical transfer of an adhesive or so-called transfer adhesive in the form of pressure-sensitive adhesive drops (2) from at least one supplied carrier (1) to a relatively moving Material web (3) shown in various embodiments and functional variants. They are each equipped with an applicator (9).
- the adhesive transfer can be carried out directly on the material web (3) and directly from the carrier (1).
- a direct application to the material web (3) in indirect form via a controlled movable transfer element is possible.
- an indirect transfer takes place, wherein first a by-product (13) is provided with the adhesive and then applied to the material web (3).
- FIG. 1 shows in a side view a first variant of an applicator device (9) for producing e.g. Longitudinal and / or transverse bonding.
- the material web (3) may be a flexible paper, foil or cardboard web or a sequence of other and possibly also rigid workpieces.
- a feed device (12,19) is provided for the carrier (1) for the carrier (1) for the carrier (1) for the carrier (1) for the carrier (1) for the carrier (1) .
- a preferred field of application are printing or packaging machines. These are e.g. to rotary printing machines, in particular web or sheet-fed offset presses for more or less fast-moving paper webs in newspaper or Akzedenztik or wrapping paper webs or blanks.
- the application device (9) can be designed here as a cross-glue unit or as a longitudinal gluing unit or as a combined device.
- the applicator is preferably arranged stationary relative to the moving material web (3).
- the application device (9) can also be assigned to a printing press or another processing machine. Because of As a rule, the transport speed of the moving material web is lower for the more rigid packaging material.
- cardboard webs can be provided with adhesive.
- individual packing material blanks can be pasted in the packaging technology.
- the by-products (13) may be data carriers in the form of CDs or the like.
- By-products (13) may also be product samples, e.g. Trial packs of detergents, perfumes or the like in flat, flexible plastic sleeves.
- packaging can be provided with a strip-shaped adhesive and then sealed.
- these are protective plastic film bags which, for transport purposes, encase any products, for example magazines or other printed products.
- packaging blanks can be pasted in various stages of production.
- the packaging blank can on the one hand be a flat material. It can also be a cubic structure, eg a partially erected cardboard or the like.
- a particularly favorable field of use are packaging made of plastics, in particular colorless and transparent or opaque plastics.
- the likewise preferably colorless adhesive is particularly useful here and does not disturb the appearance of the finished packaging.
- it is also advantageous to move the application device (9) relative to the stationary or slowly moving packaging means.
- the adhesive consists of very small pressure-sensitive adhesive drops (2), which are arranged individually in a two-dimensional grid (20) and contactless but close to each other.
- the pressure-sensitive adhesive drops (2) may be colorless or colored as desired.
- the carrier (1), on which the pressure-sensitive adhesive drops (2) are guided, is preferably designed to be elastically flexible in band or sheet form and is suitably stored and stored in a feed device (12, 19). By means of a controllable feed device (7), the carrier (1) with its pressure-sensitive adhesive drops (2) is brought into touching contact with the material web (3).
- the carrier (1) is e.g. stored on a storage roll (4). From this storage roll (4), the carrier (1) in the direction of the arrow about a transversely to the material web (3) deliverable, rotatable about its own axis and possibly rotationally driven pressure roller (7 ') guided tightly and tightly and further to a take-up roll ( 5), which resumes and stores the spent, empty carrier material.
- rollers (4,5) can e.g. have a controllable rotary drive.
- the transport drive can be operated at rest or during the order contact.
- the carrier is preferably moved along the material web (3) in the contact and transfer region.
- the pressure roller (7 ') is at a small distance above the Material web (3) deliverable, in particular arranged vertically movable and drivable and controllable so that they can be pressed in very fast movement for intervals of any length on the material web (3).
- a flat or curved counter-pressure surface (6) is arranged under the material web, which can be stationary or movable, for example in the form of a rotating counter-pressure roller.
- a close concern of the material web (3) to the counter-pressure surface (6) for example, the material web (3) with tensioning rollers on an arcuate counter-surface (6) out or the counter-surface are replaced by a suction roller. This ensures that the pressure roller (7) together with the carrier (1) can quickly detach again from the material web (3) after the pressure-sensitive adhesive drops (2) have been transferred.
- FIG. 2 shows a side view of the pressure roller (7 ') of the application device (9) of FIG.
- one or more different carriers (1) can be arranged in any width and position.
- a wide beam (1) on the material web (3) is a narrow transverse bonding produced.
- a longitudinal bond can be produced. Accordingly, depending on the choice of the beam width and depending on the control of the pressure roller (7 ') arbitrarily dimensioned adhesive surfaces can be applied to the material web (3).
- the counter-pressure surface can be movable and be replaced, for example, by a buckling hose structure which bulges in the direction of a fixed pressure roller and thus the material web (3). briefly pressed against the carrier (1).
- FIG. 3 shows an application device (9) for an indirect transfer of the pressure-sensitive adhesive points (2). It has a movable transfer element (8), e.g. a controlled rotatable transfer roller, which decreases the pressure-sensitive adhesive points (2) on one side of a carrier (1) and on another side to a material web (3) spaced from the carrier (1).
- a movable transfer element (8) e.g. a controlled rotatable transfer roller
- the indirect transmission of Figure 3 has particular advantages when it comes to labile material webs (3) and / or high transport speeds of webs (3).
- a time buffer can be created, in particular if the bonds on the high-speed material web (3) have a sufficiently large repeat.
- the transfer roller (8) rotates at a peripheral speed substantially equal to the web running speed.
- the circumference or diameter of the transfer roller (8) is preferably selected so that it is sufficient for the application of an adhesive line in the desired width.
- the transfer roller (8) has a correspondingly suitable controllable rotary drive and also a delivery device. In the process, the preferably synchronously rotating transfer roller (8) transfers its accepted pressure-sensitive adhesive drops (2) to the material web (3) in the delivery position.
- the transfer roller (8) is withdrawn and brought into contact with the carrier (1), from which it takes over a new batch of pressure-sensitive adhesive dots (2).
- the transfer roller (8) turns correspondingly slower.
- it is again delivered to the web (3) at the required time and passes this the pressure-sensitive adhesive points (2).
- a plurality of transfer rollers (8) in a magazine arrangement for. B. a rotating star, be arranged to the time buffer between the fast-running Material web (3) and the correspondingly fast Kleby VietnameseGermangabe on the one hand and the slow movement of the carrier (1) and the local Klebyrios enthusiastsgabe to create.
- the plan views in Figure 4 show four possible different arrangements of pressure-sensitive adhesive drops (2) on a support (1) in the form of a planar grid (20).
- the adhesive drops (2) are very small and have e.g. a diameter of about 0.5 to 1 mm. The diameter may alternatively be smaller or larger and up to a few millimeters, e.g. up to 5 millimeters.
- the pressure-sensitive adhesive drops (2) are arranged in the planar grid (20) in several rows next to each other without mutual contact.
- the distances between the pressure-sensitive adhesive drops (2) are about as large as their diameter or smaller.
- the pressure-sensitive adhesive drops (2) can be arranged in uniform rows and columns and thus on the same longitudinal and transverse line with each other.
- the adhesive bead rows may alternatively be offset, thereby increasing the packing density.
- the pressure-sensitive adhesive drops (2) can be applied in the form of dots, squares or the like and their distances from each other can be varied in such a way that regions of different packing densities are formed.
- the pressure-sensitive adhesive drops (2) can have any cubic shape. In the preferred embodiment, they have a spherical or drop-like shape with a round cross-section. Alternatively, the shape may also be cylindrical or tubular. Further, the pressure-sensitive adhesive drops (2) may have a cubic shape with a prismatic cross-section.
- the carrier (1) is repellent as one or both sides Carrier (1) formed with a very low adhesion to the pressure-sensitive adhesive drops (2).
- the carrier (1) may have on one or both sides, for example, a silicone-containing or silicone-free non-stick coating or the like.
- the carrier (1) has in this case the lowest and the finally adhered material web (3) the highest adhesion effect.
- the transfer roller (s) (8) has or have an intervening adhesion effect which makes it possible, on the one hand, to transfer the pressure-sensitive adhesive points from the carrier (1) to the transfer roller (8) and then to deliver it from there to the material web (3) ,
- the adhesion effect is also chosen so large that during the free rotation of the transfer roller (8) no unwanted detachment takes place.
- the adhesive drops (2) consist of a pressure-sensitive adhesive whose internal cohesive forces are greater than the external adhesion forces relative to the carrier (1).
- the pressure-sensitive adhesive drops (2) can thereby be detached from the carrier (1) without destruction, when they come into contact with the material web (3) on their free side, which has a greater adhesion or adhesive action than the carrier (1).
- the pressure-sensitive adhesive can be made of any suitable material, for example dispersions, acrylates or synthetic rubber.
- the pressure-sensitive adhesive may also be formed by a hot-melt adhesive which is shock-cooled with cold or the like.
- the adhesive force or the cohesion and adhesion effect can be varied depending on the field of application and requirements, for example about the area size, the height and the distances of the pressure-sensitive adhesive drops (2) as well as on the formulation of the Adhesive.
- the pressure-sensitive adhesive drops (2) have on the carrier (1) the above-described low adhesion, so that they stick to the material web (3) and can be easily detached from the carrier (1).
- diameter of the pressure roller and grid dimension more or less rows of drops are detached in the relative direction of the web (3) and transferred to the web (3). If the carrier (1) rotates in the web contact through the transport drive and moves in the relative direction with appropriate speed, the number of dispensed rows of drops and thus the length of the adhesive surface in the direction can be increased.
- Figures 5, 6 and 7 show a second and third variant of the applicator (9), which serves here for indirect adhesive transfer and for applying a by-product (13) of the type described above on a material web (3).
- the material web (3) is moved by means of a conveyor (10), which also forms the counter-pressure surface, continuously or intermittently in the direction of the arrow.
- the material web (3) consists of individual materials (11), arranged one behind the other in series, e.g. in sheet or blank form. These can be pages of a printed product, but also packaging blanks or the like. Instead of individual materials (11), a continuous material web may also be present.
- the adhesive (2) is moved on a strip or sheet-shaped carrier (1) by means of the feed device in the form of a belt conveyor (12), preferably in parallel and with the same or opposite direction to the material web (3).
- the individual By-products (13) are also in a row one behind the other on a conveyor (14) with preferably parallel alignment in moved accordingly.
- the application device (9) has a gripping device (15), which can be designed in any suitable manner and with any complexity.
- FIG. 5 schematically shows a variant as a linear axis device or so-called gantry robot.
- FIGS. 6 and 7 schematically show a modification as a so-called rotary robot with linear and rotary axes or as a multi-axis articulated-arm robot.
- the gantry robot has a bridge (22) transversely spanning the conveyors (10, 12, 14) with a carriage (23) movable transversely thereto, which carries a gripping arm (16) at the end of which a suitable gripper (17) for the by-product (16) 13), eg a suction head, arranged and possibly articulated.
- the gripper arm (16) is mounted raised and lowered and can possibly rotate the gripper (17) or otherwise move.
- the bridge (22) and possibly the gripping arm (16) can also be moved in the conveyor running direction, for. with the conveyors (10,12,14) take a piece synchronously. Arrows indicate the potential movement possibilities.
- the rotary robot has a stationary or movable base (24) with a gripping arm (16) together with grippers (17) for the by-product (13).
- the gripper arm (16) is rotatably mounted on the base (24) about a vertical axis (18) and can be raised and lowered and can be articulated in itself.
- the axis (18) is located between the conveyors (10,12,14), so that the gripper arm (16) reaches all three conveyors (10,12,14) with the pivoting movement shown in Figure 6 and illustrated by an arrow.
- the gripping device (15) picks up a by-product (13) from the conveyor (14) with the gripping arm (16), pivots it over the carrier (1) and presses it onto the local pressure-sensitive adhesive drops (2), which thereby reach the underside of the by-product (13) are adhesively transferred. Subsequently, the gripper arm (16) raises the by-product (13) again, moves it over the material web (3) or the individual material (11), optionally orientates it and then lowers it again, wherein it touches the material (11). is pressed and glued. Subsequently, the gripper (17) releases the by-product (13) and returns to the initial position above the conveyor (14) to grip the next by-product (13).
- the conveyors (10,12,14) can be moved continuously or intermittently.
- FIG. 8 shows a fourth variant of the applicator (9).
- This has in addition to a gripping device (15) and another feed device (19) for the adhesive carrier (1) in the form of a stationary arranged and preferably motor-driven roller dispenser.
- the adhesive carrier (1) is wound in this embodiment on a storage roll (4) and is withdrawn intermittently via a motor-driven roller guide.
- On a deflection roller (21) with a small diameter of the support (1) for removing the pressure-sensitive adhesive drops (2) of the gripping device (15) is presented, which in turn has a multi-axially movable gripping arm (16) with a gripper (17).
- the empty carrier (1) is removed and disposed of.
- a by-product (13) is held by the gripper (17) and pressed against the carrier (1).
- a substantially line-shaped contact is produced by the deflection roller (21), wherein only one or a few rows of pressure-sensitive adhesive drops (2) are transferred to the underside of the by-product (13). The smaller the diameter or the narrower the curvature of the deflection roller (21), the narrower is the contact area and the fewer rows of drops are transferred.
- the by-product (13) is then pressed onto the material web (3) and glued.
- the underside of the by-product (13) is provided with adhesive over the grid (20) substantially over the entire area by the conveyor (12) which is flat in the transfer region.
- the adhesive strip may be substantially smaller covering only part of the underside of the by-product (13).
- the type and configuration of the pressure-sensitive adhesive drops (2) and also their raster shape (20) can vary. Also, the shape, the material and the properties of the carrier (1) are modifiable.
Landscapes
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur maschinellen Klebemittelübertragung auf eine relativ bewegte Bahn oder eine Abfolge von mit einer Klebefläche oder einem aufgeklebten Beiprodukt zu versehenden Gegeständen, insbesondere von Papier- oder Kartonbahnen.The invention relates to a method and a device for mechanical adhesive transfer to a relatively moving web or a sequence of articles to be provided with an adhesive surface or a glued by-product, in particular of paper or board webs.
Aus der
Ferner sind aus der
Aus
Diese Aufgabe wird mit den Merkmalen der Ansprüche 1 und 6 gelöst.This object is achieved with the features of
Die beanspruchte Auftragtechnik hat den Vorteil, dass statt flüssiger Klebstoffe sehr kleine und formstabile Haftklebetropfen Verwendung finden. Die mit flüssigen Klebstoffen verbundenen Probleme der sicheren Handhabung, Steuerung, Düsen- und Leitungsverstopfung, Reinigung etc. können damit umgangen werden. Die Haftklebetropfen bieten eine sofortige Haftung und Klebewirkung ohne Abkühl- und Trockenzeiten.The claimed application technique has the advantage that instead of liquid adhesives, very small and dimensionally stable pressure-sensitive adhesive drops are used. The problems of safe handling, control, nozzle and line clogging, cleaning, etc. associated with liquid adhesives can thus be circumvented. The pressure-sensitive adhesive drops provide immediate adhesion and adhesion without cooling and drying times.
Die Haftklebetropfen des Transferklebers können alternativ direkt oder indirekt auf eine relativ zur Auftragvorrichtung bewegte Materialbahn übertragen werden. Hierbei kann eine Anpassung an unterschiedlichste Einsatzzwecke und Prozessvorgaben erfolgen.The pressure-sensitive adhesive drops of the transfer adhesive can alternatively be transferred directly or indirectly to a material web moved relative to the application device. This can be done to a variety of purposes and process requirements.
Beim direkten Übertrag wird das Klebemittel nach Ablösung vom Träger direkt auf die Materialbahn appliziert und steht dann als offene Klebefläche für unterschiedlichste Aufgaben zur Verfügung. Der Direktauftrag kann unmittelbar vom Träger auf die Materialbahn oder mittelbar über ein zwischengeschaltetes Übertragungselement erfolgen.In the case of direct transfer, the adhesive is applied directly to the material web after detachment from the support and is then available as an open adhesive surface for a wide variety of tasks. The direct order can be made directly from the carrier to the material web or indirectly via an intermediate transmission element.
Beim indirekten Übertrag wird das Klebemittel zunächst auf ein mit der Materialbahn zu verklebendes Beiprodukt und dann mit diesem auf die Materialbahn aufgebracht.In the case of indirect transfer, the adhesive is first applied to a by-product to be bonded to the material web and then to the material web with it.
Die Auftragvorrichtung hat einen weiten Einsatzbereich, der beliebige Arten und Relativgeschwindigkeiten von Materialbahnen sowie Auftragtechniken umfasst. Eine Materialbahn kann z.B. eine mehr oder weniger schnell laufende Papier-, Folien- oder Kartonbahn oder eine kontinuierlich oder intermittierend bewegte Abfolge einzelner Gegenstände, z.B. Packmittelzuschnitte, Kartons oder dgl., im Sinne eines Materialflusses sein. Zwischen der Auftragvorrichtung und dem Material bzw. der Materialbahn besteht eine Relativbewegung. In den meisten Anwendungsfällen ist hierbei die Auftragvorrichtung stationär angeordnet, wobei sich das zu beklebende Material an der Auftragvorrichtung als laufende Materialbahn oder Materialfluss vorbeibewegt. Die kinematische Zuordnung kann auch umgekehrt sein, wobei sich die Auftragvorrichtung relativ zum Material bewegt. Dies ist z. B. bei großformatigen Materialien oder Gegenständen der Fall, die dabei in Ruhe sind oder sich mit geringfügiger Geschwindigkeit bewegen können.The applicator has a wide range of uses including any types and relative speeds of webs as well as application techniques. A material web can be, for example, a more or less fast-moving paper, film or board web or a continuously or intermittently moved sequence of individual objects, eg packaging blanks, cartons or the like, in the sense of a material flow. There is a relative movement between the application device and the material or the material web. In most applications, in this case the application device is arranged stationary, with the adhering to Material on the applicator as moving material web or material flow past. The kinematic mapping may also be reversed with the applicator moving relative to the material. This is z. As with large-sized materials or objects of the case, which are at rest or can move at a low speed.
Der Klebstoff kann auf die Materialbahn direkt und offen aufgebracht werden, um eine spätere gegenseitige Klebeverbindung von Teilen der Materialbahn, z.B. von Packmittelzuschnitten einer aufgestellten Schachtel oder von gefalzten oder geschnittenen Seiten einer Papierbahn, zu ermöglichen. Alternativ oder zusätzlich können Beiprodukte, z.B. Warenproben, Datenträger oder dgl., auf die Materialbahn geklebt werden, was auch nachträglich auf eine zuvor aufgebrachte Klebelinie oder Klebefläche möglich ist.The adhesive may be applied directly and openly to the web of material for subsequent adhesive bonding of portions of the web, e.g. packaging slices of a set-up box or of folded or cut sides of a paper web. Alternatively or additionally, by-products, e.g. Samples, data carriers or the like., Glued to the web, which is also possible later on a previously applied glue line or adhesive surface.
In der nachfolgenden Beschreibung werden alle Materialien und Anwendungsfälle einheitlich unter dem Begriff Materialbahn bezeichnet. Dies schließt sowohl die erwähnten laufenden Papierbahnen etc., Materialflüsse von Einzelgegenständen, als auch die instationäre oder stationäre Anordnung von einzelnen Materialien oder Gegenständen ein.In the following description, all materials and applications are uniformly referred to as material web. This includes both the mentioned running paper webs, etc., material flows of individual items, as well as the transient or stationary arrangement of individual materials or objects.
Die Haftklebetropfen liegen in einer Rasterstruktur auf dem Träger vor. Dies hat den Vorteil, dass beim Zusammenpressen des Trägers mit der Materialbahn die scherfesten Haftklebetropfen in einer genau steuerbaren Menge und örtlichen Verteilung vom Träger abgelöst und auf die Materialbahn oder auf das Beiprodukt übertragen werden. Hierbei werden genau so viele Haftklebetropfen abgelöst, wie vom aufgepressten Material oder Beiprodukt überdeckt werden. Haftklebetropfen, die nicht mit dem Material oder Beiprodukt in Berührung kommen, verbleiben auf dem Träger. Hierdurch werden exakt auf die Kontaktfläche begrenzte und somit genau steuerbare Klebeflächen übertragen. Dies gewährleistet auch eine gleichmäßige vollflächige Verklebung, was mit den bisher üblichen Klebstoffraupen nicht erreichbar ist.The pressure-sensitive adhesive drops are present in a grid structure on the support. This has the advantage that when the carrier is pressed together with the material web, the shear-proof pressure-sensitive adhesive drops are removed from the carrier in a precisely controllable amount and local distribution and transferred to the material web or to the by-product. In this case, exactly as many pressure-sensitive adhesive drops are removed as are covered by the pressed-on material or by-product. Pressure-sensitive adhesive drops that do not come into contact with the material or by-product remain on the carrier. As a result, precisely limited to the contact surface and thus accurately controlled adhesive surfaces are transmitted. This also ensures a uniform full-surface bonding, which is not achievable with the usual adhesive beads.
Die Haftklebetropfen weisen eine hohe Kohäsion auf, wodurch sie eine hohe Formfestigkeit besitzen, welche sie daran hindert mit benachbarten Haftklebetropfen zusammenzulaufen und größere Tropfen zu bilden, wie dies bei flüssigen Klebemitteln der Fall ist. Des Weiteren weisen die Haftklebetropfen zum Träger eine relativ geringe Adhäsion auf, die so dimensioniert ist, dass die Tropfen zwar auf dem Träger stark genug haften, um auch bei hohen Trägerbewegungsgeschwindigkeiten nicht abzufallen, sich aber beim Zusammenpressen des Trägers mit der Materialbahn, zu welcher sie eine höhere Adhäsion aufweisen, vom Träger lösen und auf die Materialbahn oder das Beiprodukt übertragen werden.The pressure-sensitive adhesive drops have a high cohesion, whereby they have a high dimensional stability, which prevents them from merging with adjacent pressure-sensitive adhesive drops and form larger drops, as is the case with liquid adhesives. Furthermore, the pressure-sensitive adhesive drops to the carrier have a relatively low adhesion, which is dimensioned so that the drops adhere strongly enough on the carrier so as not to fall off even at high carrier movement speeds, but when compressing the carrier with the material web to which they have a higher adhesion, detach from the carrier and transferred to the web or the by-product.
Der Träger wird von einer Zuführeinrichtung zugeführt und mittels einer Zustellvorrichtung in Kontakt mit der Materialbahn gebracht und wird ferner von einem Transportantrieb in Ruhezeiten und/oder während des Bahnkontakts weiterbewegt. Der Träger kann in variierbaren Taktraten oder auch dauerhaft auf die relativ bewegte Materialbahn aufgepresst werden. Beim Umlaufen des Trägers um die Andrückwalze und gleichzeitigem Aufpressen dieser Andrückwalze auf die Materialbahn werden Haftklebetropfen vom Träger auf die Materialbahn übertragen, wodurch je nach zeitlicher Anpresslänge und Relativgeschwindigkeit zur Materialbahn kurze oder lang gestreckte Klebeflächen erzeugt werden.The carrier is fed by a feed device and brought by means of a feed device into contact with the material web and is further moved by a transport drive during rest periods and / or during the web contact. The carrier can be pressed in variable clock rates or permanently on the relatively moving material web. When the carrier is circulated around the pressure roller and at the same time this pressure roller is pressed onto the material web, pressure-sensitive adhesive droplets are transferred from the carrier to the material web, whereby short or long stretched adhesive surfaces are produced depending on the temporal contact pressure and relative speed to the material web.
Durch Variierung der Trägerbreite und Variierung der Anpresslänge können Klebeflächen aus Haftklebetropfen sowohl streifenartig in Quer- oder Längsrichtung des Materialbahnflusses als auch großflächig aufgebracht werden. Wird ein schmaler Träger über eine relativ lange Zeit aufgepresst, so entsteht eine sich längs zum Materialbahnfluss erstreckende streifenförmige Klebefläche. Wird ein breiter Träger über einen sehr kurzen Zeitraum aufgepresst, so entsteht eine streifenartige Klebefläche, welche sich quer zum Materialbahnfluss erstreckt. Somit sind sowohl Längs- als auch Querklebungen mit derselben Vorrichtung möglich.By varying the beam width and varying the Anpresslänge adhesive surfaces of pressure-sensitive adhesive drops both strip-like in the transverse or longitudinal direction of the Material web flow and be applied over a large area. If a narrow carrier is pressed on for a relatively long time, a strip-shaped adhesive surface extending longitudinally of the material web flow results. If a broad carrier is pressed on over a very short period of time, a strip-like adhesive surface is created which extends transversely to the material web flow. Thus, both longitudinal and transverse adhesions are possible with the same device.
Des Weiteren ist die beschriebene Vorrichtung auf Grund geringerer Laufgeschwindigkeiten geringerem Verschleiß unterworfen und durch die Haftung der Klebetropfen am Träger wird erreicht, dass nicht abgelöste Haftklebetropfen auf dem Träger verbleiben, welcher als verbrauchtes Material auf der Aufnahmerolle aufgerollt wird, und somit keine Verunreinigungen oder Fehlklebungen erzeugen. Somit ist die Vorrichtung weit weniger wartungsintensiv und universeller einsetzbar als bisher bekannte Längs- und Querleimwerke.Furthermore, the device described is subject to less wear due to lower running speeds, and the adhesion of the adhesive drops to the carrier ensures that unresolved pressure-sensitive adhesive drops remain on the carrier, which is rolled up as used material on the take-up roll and thus do not produce any impurities or false bonds , Thus, the device is far less maintenance intensive and universal use than previously known longitudinal and transverse gluing plants.
Die Steuerung und der Antrieb der maschinellen Auftragvorrichtung sind vorzugsweise derart gestaltet, dass ein unabhängiger Antrieb für die Auftragvorrichtung vorliegt, welcher beispielsweise durch optische Abtastung von Materialkennstellen auf der relativ bewegten Materialbahn gesteuert wird. Hierdurch kann auf aufwändige Synchronisationsantriebe verzichtet werden.The control and the drive of the mechanical application device are preferably designed such that there is an independent drive for the application device, which is controlled, for example, by optical scanning of material identifiers on the relatively moving material web. As a result, can be dispensed with complex synchronization drives.
Um auch schnelle und ggf. hochfrequente Bewegungen der Zustellvorrichtung bzw. der Andrückwalze zu ermöglichen, kann der Antrieb bevorzugt als Kombination einiger Piezo-Elemente zu einem Aktivator oder in einer anderen zweckmäßigen Form gestaltet sein.In order to enable fast and possibly high-frequency movements of the feed device or the pressure roller, the drive may be preferably designed as a combination of some piezo elements to an activator or in another convenient form.
Um bei hochfrequenter Bewegung der Andrückwalze eine möglichst geringe Hubweite zu erreichen, kann die Materialbahn bevorzugt in Bogenführung mit Spannrollen unter der Andrückwalze verlaufen oder über eine Saugrolle geführt werden. Hierdurch wird erreicht, dass die Materialbahn eine relativ zur Hubrichtung der Andrückwalze diskrete Lage beibehält, wodurch auch bei geringem Hub der Andrückwalze sicher gestellt wird, dass kein Kontakt mehr zwischen Träger und Materialbahn besteht.In order to achieve the shortest stroke possible with high-frequency movement of the pressure roller, the material web can preferably extend in sheet guide with tension rollers under the pressure roller or be guided over a suction roller. This ensures that the material web retains a discrete relative to the stroke direction of the pressure roller layer, whereby even with a small stroke of the pressure roller is ensured that no contact between the carrier and web exists.
Alternativ zur Bewegung der Andrückwalze ist in einer weiteren Ausführung der Erfindung eine statisch angeordnete Andrückwalze vorgesehen. Um ein taktweises Zusammenpressen von Träger und Materialbahn zu ermöglichen, wird hierbei die Materialbahn beispielsweise gespannt über einen auswölbbaren oder zustellbaren Untergrund geführt, wobei die Materialbahn bei jedem Auswölben des Untergrundes an die Andrückwalze gepresst wird.As an alternative to the movement of the pressure roller, a statically arranged pressure roller is provided in a further embodiment of the invention. In order to enable a cyclic compression of carrier and material web, in this case the material web is guided, for example, stretched over a herausölbbaren or undeliverable substrate, wherein the web is pressed at each buckling of the substrate to the pressure roller.
Andere Ausführungsformen des Applikators sind für den Klebstoffübertrag auf Beiprodukte und deren anschließende Befestigung auf der Materialbahn vorgesehen. Alternativ können die Beiprodukte auf eine zuvor mit Klebstofftropfen versehene Materialbahn aufgebracht werden.Other embodiments of the applicator are provided for the adhesive transfer to by-products and their subsequent attachment to the web. Alternatively, the by-products can be applied to a previously provided with adhesive drops material web.
Die Erfindung ist in den Zeichnungen beispielsweise und schematisch dargestellt. Es zeigen:
- Figur 1:
- eine Seitenansicht einer Auftragvorrichtung mit einer laufenden Materialbahn zur Erzeugung einer längs oder quer verlaufenden Klebelinie,
- Figur 2:
- eine Seitenansicht einer längs zur Laufrichtung der Papierbahn sich erstreckenden Auftragvorrichtung,
- Figur 3:
- eine Seitenansicht einer mittelbaren Übertragungsvorrichtung von Klebepunkten,
- Figur 4:
- eine Draufsicht auf einen Träger mit verschiedenen Möglichkeiten zur rasterartiger Anordnung der Haftklebetropfen auf dem Träger,
- Figur 5:
- eine abgebrochene Draufsicht auf eine Auftragvorrichtung zum Applizieren von Beiprodukten auf eine Materialbahn,
- Figur 6:
- eine abgebrochene Draufsicht auf eine Variante der Auftragvorrichtung von
Figur 5, - Figur 7:
- eine Seitenansicht der
Vorrichtung von Figur 6 gemäß Pfeil VII und - Figur 8:
- eine weitere Variante einer Auftragvorrichtung in abgebrochener Seitenansicht.
- FIG. 1:
- a side view of an applicator with a moving web to produce a longitudinal or transverse glue line,
- FIG. 2:
- a side view of a longitudinally extending to the direction of the paper web applicator,
- FIG. 3:
- a side view of an indirect transfer device of adhesive dots,
- FIG. 4:
- a top view of a carrier with different possibilities for grid-like arrangement of the pressure-sensitive adhesive drops on the carrier,
- FIG. 5:
- a broken plan view of an applicator device for applying by-products to a material web,
- FIG. 6:
- 5 is a broken plan view of a variant of the application device of FIG. 5;
- FIG. 7:
- a side view of the device of Figure 6 according to arrow VII and
- FIG. 8:
- a further variant of an applicator in aborted side view.
In den Zeichnungen sind Vorrichtungen zur maschinellen Übertragung eines Klebemittels oder sog. Transferklebers in Form von Haftklebetropfen (2) von mindestens einem zugeführten Träger (1) auf eine relativ bewegte Materialbahn (3) in verschiedenen Ausführungsformen und Funktionsvarianten dargestellt. Sie sind jeweils mit einer Auftragvorrichtung (9) ausgerüstet. Der Klebemittelübertrag kann direkt auf die Materialbahn (3) und unmittelbar vom Träger (1) erfolgen. In einer Variante ist ein direkter Auftrag auf die Materialbahn (3) in mittelbarer Form über ein gesteuert bewegliches Übergabeelement möglich. In einer dritten Funktionsvariante erfolgt ein mittelbarer Übertrag, wobei zunächst ein Beiprodukt (13) mit dem Klebemittel versehen und anschließend auf die Materialbahn (3) appliziert wird.In the drawings, devices for the mechanical transfer of an adhesive or so-called transfer adhesive in the form of pressure-sensitive adhesive drops (2) from at least one supplied carrier (1) to a relatively moving Material web (3) shown in various embodiments and functional variants. They are each equipped with an applicator (9). The adhesive transfer can be carried out directly on the material web (3) and directly from the carrier (1). In a variant, a direct application to the material web (3) in indirect form via a controlled movable transfer element is possible. In a third functional variant, an indirect transfer takes place, wherein first a by-product (13) is provided with the adhesive and then applied to the material web (3).
Figur 1 zeigt in einer Seitenansicht eine erste Variante einer Auftragvorrichtung (9) zur Erstellung von z.B. Längs- und/oder Querklebungen. Die Materialbahn (3) kann eine flexible Papier-, Folien- oder Kartonagenbahn oder eine Abfolge von anderen und ggf. auch starren Werkstücken sein. Für den Träger (1) ist ein Zuführeinrichtung (12,19) vorgesehen.FIG. 1 shows in a side view a first variant of an applicator device (9) for producing e.g. Longitudinal and / or transverse bonding. The material web (3) may be a flexible paper, foil or cardboard web or a sequence of other and possibly also rigid workpieces. For the carrier (1) a feed device (12,19) is provided.
Ein bevorzugter Einsatzbereich sind Maschinen in der Druck- oder Verpackungstechnik. Hierbei handelt es sich z.B. um Rotationsdruckmaschinen, insbesondere Rollen- oder Bogenoffsetmaschinen für mehr oder weniger schnell laufende Papierbahnen im Zeitungs- oder Akzedenzdruck oder um Verpackungsmittelbahnen oder -zuschnitte. Die Auftragvorrichtung (9) kann hierbei als Querleimwerk oder als Längsleimwerk oder als Kombigerät ausgebildet sein. Bei den Ausführungsformen mit hoher Relativgeschwindigkeit, wie sie z.B. im Zeitungs- oder Akzedenzdruck vorkommen, ist die Auftragvorrichtung vorzugsweise stationär gegenüber der laufenden Materialbahn (3) angeordnet.A preferred field of application are printing or packaging machines. These are e.g. to rotary printing machines, in particular web or sheet-fed offset presses for more or less fast-moving paper webs in newspaper or Akzedenzdruck or wrapping paper webs or blanks. The application device (9) can be designed here as a cross-glue unit or as a longitudinal gluing unit or as a combined device. In the high relative speed embodiments, e.g. occur in newspaper or Akzedenzdruck, the applicator is preferably arranged stationary relative to the moving material web (3).
Im Bereich der Verpackungstechnik kann die Auftragvorrichtung (9) ebenfalls einer Druckmaschine oder einer anderen Verarbeitungsmaschine zugeordnet sein. Wegen der steiferen Packmittelmaterialien ist hierbei in der Regel die Transportgeschwindigkeit der laufenden Materialbahn geringer. Hierbei können z.B. Kartonbahnen mit Klebstoff versehen werden. Gleichermaßen können in der Verpackungstechnik einzelne Packmittelzuschnitte beklebt werden.In the field of packaging technology, the application device (9) can also be assigned to a printing press or another processing machine. Because of As a rule, the transport speed of the moving material web is lower for the more rigid packaging material. Here, for example, cardboard webs can be provided with adhesive. Likewise, individual packing material blanks can be pasted in the packaging technology.
Ein weiterer Anwendungsbereich im bevorzugten Gebiet der Druck- und Verpackungstechnik liegt im Finish-Bereich der Produkte. Dies betrifft z.B. das Anbringen von Beiprodukten (13) an Druckerzeugnissen, z.B. Zeitschriften. Bei den Beiprodukten (13) kann es sich um Datenträger in Form von CD's oder dergleichen handeln. Beiprodukte (13) können auch Produktproben sein, z.B. Probepackungen von Waschmitteln, Parfüms oder dergleichen in flachen, flexiblen Kunststoffhüllen. Diese Teile können mittels der beanspruchten Klebetechnik mit dem Druckerzeugnis verbunden werden. Das Klebemittel lässt sich dabei wahlweise auf dem Druckerzeugnis oder dem Beiprodukt (13) oder auch auf beiden anbringen.Another area of application in the preferred field of printing and packaging technology lies in the finishing area of the products. This concerns e.g. the attachment of by-products (13) to printed products, e.g. Magazines. The by-products (13) may be data carriers in the form of CDs or the like. By-products (13) may also be product samples, e.g. Trial packs of detergents, perfumes or the like in flat, flexible plastic sleeves. These parts can be connected by means of the claimed adhesive technique with the printed product. The adhesive can be attached either on the printed product or the by-product (13) or on both.
In der Verpackungstechnik können z.B. Folienverpackungen mit einem streifenförmigen Klebemittel versehen und dann verschlossen werden. Hierbei handelt es sich in einem Anwendungsbeispiel um schützende Kunststofffolientaschen, die für Transportzwecke beliebige Produkte, z.B. Zeitschriften oder andere Druckereiprodukte, umhüllen. In der Verpackungstechnik können ansonsten auch Verpackungsmittelzuschnitte in verschiedenen Produktionsstadien beklebt werden. Der Packmittelzuschnitt kann einerseits ein Flachmaterial sein. Es kann sich aber auch um ein kubisches Gebilde, z.B. einen teilaufgerichteten Karton oder dergleichen handeln. Ein besonders günstiger Einsatzbereich sind Verpackungen aus Kunststoffen, insbesondere farblosen und durchsichtigen oder opaken Kunststoffen. Das ebenfalls vorzugsweise farblose Klebemittel ist hierbei besonders gut einsetzbar und stört nicht die Erscheinungsform der fertigen Verpackung. Bei größeren und insbesondere teilaufgerichteten Verpackungsmitteln ist es zudem günstig, die Auftragvorrichtung (9) relativ zum stehenden oder langsam bewegten Verpackungsmittel zu bewegen.In packaging technology, for example, film packaging can be provided with a strip-shaped adhesive and then sealed. In one application example, these are protective plastic film bags which, for transport purposes, encase any products, for example magazines or other printed products. In packaging technology, otherwise, packaging blanks can be pasted in various stages of production. The packaging blank can on the one hand be a flat material. It can also be a cubic structure, eg a partially erected cardboard or the like. A particularly favorable field of use are packaging made of plastics, in particular colorless and transparent or opaque plastics. The likewise preferably colorless adhesive is particularly useful here and does not disturb the appearance of the finished packaging. In the case of larger and, in particular, partially erected packaging means, it is also advantageous to move the application device (9) relative to the stationary or slowly moving packaging means.
Das Klebemittel besteht aus sehr kleinen Haftklebetropfen (2), welche einzeln in einem flächigen Raster (20) und kontaktlos aber eng beieinander liegend angeordnet sind. Die Haftklebetropfen (2) können farblos oder beliebig eingefärbt sein. Der Träger (1), auf welchem die Haftklebetropfen (2) geführt sind, ist vorzugsweise biegeelastisch in Band- oder Blattform ausgebildet und ist in geeigneter Weise in einer Zuführeinrichtung (12,19) gelagert und bevorratet. Mittels einer steuerbaren Zustellvorrichtung (7) wird der Träger (1) mit seinen Haftklebetropfen (2) in Berührungskontakt mit der Materialbahn (3) gebracht.The adhesive consists of very small pressure-sensitive adhesive drops (2), which are arranged individually in a two-dimensional grid (20) and contactless but close to each other. The pressure-sensitive adhesive drops (2) may be colorless or colored as desired. The carrier (1), on which the pressure-sensitive adhesive drops (2) are guided, is preferably designed to be elastically flexible in band or sheet form and is suitably stored and stored in a feed device (12, 19). By means of a controllable feed device (7), the carrier (1) with its pressure-sensitive adhesive drops (2) is brought into touching contact with the material web (3).
In der Zuführeinrichtung (12) ist der Träger (1) z.B. auf einer Speicherrolle (4) gelagert. Von dieser Speicherrolle (4) wird der Träger (1) in Pfeilrichtung um eine quer zur Materialbahn (3) zustellbare, um die eigene Achse drehbare und ggf. rotierend angetriebene Andrückwalze (7') eng anliegend und gespannt geführt und weiter zu einer Aufnahmerolle (5) geleitet, welche das verbrauchte, leere Trägermaterial wieder aufnimmt und speichert.In the feeder (12) the carrier (1) is e.g. stored on a storage roll (4). From this storage roll (4), the carrier (1) in the direction of the arrow about a transversely to the material web (3) deliverable, rotatable about its own axis and possibly rotationally driven pressure roller (7 ') guided tightly and tightly and further to a take-up roll ( 5), which resumes and stores the spent, empty carrier material.
Für den Transport des Trägers (1) können ein oder mehrere geeignete Transportantriebe vorhanden sein. Die Rollen (4,5) können z.B. einen steuerbaren Drehantrieb besitzen. Der Transportantrieb kann in Ruhezeiten oder auch während des Auftragekontakts betätigt werden. Der Träger wird im Kontakt- und Übertragungsbereich vorzugsweise mitlaufend mit der Materialbahn (3) bewegt.For the transport of the carrier (1), one or more suitable transport drives may be present. The rollers (4,5) can e.g. have a controllable rotary drive. The transport drive can be operated at rest or during the order contact. The carrier is preferably moved along the material web (3) in the contact and transfer region.
Die Andrückwalze (7') ist in geringem Abstand über der Materialbahn (3) zustellbar, insbesondere höhenbeweglich und antreibbar angeordnet und derart steuerbar, dass sie in sehr schneller Bewegung für Intervalle beliebiger Länge auf die Materialbahn (3) aufgepresst werden kann. Im Bereich der Andrückwalze (7') ist unter der Materialbahn eine ebene oder gewölbte Gegendruckfläche (6) angeordnet, die stationär oder beweglich sein kann, z.B. in Form einer rotierenden Gegendruckwalze.The pressure roller (7 ') is at a small distance above the Material web (3) deliverable, in particular arranged vertically movable and drivable and controllable so that they can be pressed in very fast movement for intervals of any length on the material web (3). In the region of the pressure roller (7 '), a flat or curved counter-pressure surface (6) is arranged under the material web, which can be stationary or movable, for example in the form of a rotating counter-pressure roller.
Um in einer weiteren Ausführung der Erfindung ein enges Anliegen der Materialbahn (3) an die Gegendruckfläche (6) zu ermöglichen, kann beispielsweise die Materialbahn (3) mit Spannrollen über eine bogenförmige Gegendrückfläche (6) geführt oder die Gegendrückfläche durch eine Saugrolle ersetzt werden. Hierdurch wird erreicht, das sich die Andrückwalze (7) nebst Träger (1) schnell wieder von der Materialbahn (3) lösen kann, nachdem die Haftklebetropfen (2) übertragen worden sind.In order to allow in a further embodiment of the invention, a close concern of the material web (3) to the counter-pressure surface (6), for example, the material web (3) with tensioning rollers on an arcuate counter-surface (6) out or the counter-surface are replaced by a suction roller. This ensures that the pressure roller (7) together with the carrier (1) can quickly detach again from the material web (3) after the pressure-sensitive adhesive drops (2) have been transferred.
In Figur 2 ist eine Seitenansicht auf die Andrückwalze (7') der Auftragvorrichtung (9) von Figur 1 dargestellt. Wie durch die gestrichelten Linien angedeutet, können ein oder mehrere unterschiedliche Träger (1) in beliebiger Breite und Position angeordnet werden. Bei kurzzeitiger Aufpressung eines breiten Trägers (1) auf die Materialbahn (3) wird eine schmale Querklebung erzeugt. Bei längerer Aufpressung eines schmalen Trägers (1) kann eine Längsklebung produziert werden. Demnach können je nach Wahl der Trägerbreite und je nach Steuerung der Andrückwalze (7') beliebig dimensionierte Klebeflächen auf die Materialbahn (3) aufgebracht werden.FIG. 2 shows a side view of the pressure roller (7 ') of the application device (9) of FIG. As indicated by the dashed lines, one or more different carriers (1) can be arranged in any width and position. For short-term pressing a wide beam (1) on the material web (3) is a narrow transverse bonding produced. For a longer pressing of a narrow support (1) a longitudinal bond can be produced. Accordingly, depending on the choice of the beam width and depending on the control of the pressure roller (7 ') arbitrarily dimensioned adhesive surfaces can be applied to the material web (3).
In einer weiteren Ausführung kann statt einer Bewegung der Andrückwalze (7') die Gegendruckfläche beweglich sein und z.B. durch ein auswölbbares Schlauchgebilde ersetzt werden, welches in Richtung einer fest angeordnete Andrückwalze auswölbt und somit die Materialbahn (3) kurzzeitig gegen den Träger (1) anpresst.In a further embodiment, instead of a movement of the pressure roller (7 '), the counter-pressure surface can be movable and be replaced, for example, by a buckling hose structure which bulges in the direction of a fixed pressure roller and thus the material web (3). briefly pressed against the carrier (1).
Figur 3 zeigt eine Auftragvorrichtung (9) für eine mittelbare Übertragung der Haftklebepunkte (2). Sie besitzt ein bewegliches Übergabeelement (8), z.B. eine gesteuert drehbare Übergabewalze, welche die Haftklebepunkte (2) auf einer Seite von einem Träger (1) abnimmt und auf einer anderen Seite an eine vom Träger (1) distanzierte Materialbahn (3) abgibt.FIG. 3 shows an application device (9) for an indirect transfer of the pressure-sensitive adhesive points (2). It has a movable transfer element (8), e.g. a controlled rotatable transfer roller, which decreases the pressure-sensitive adhesive points (2) on one side of a carrier (1) and on another side to a material web (3) spaced from the carrier (1).
Die mittelbare Übertragung von Figur 3 hat besondere Vorteile, wenn es um labile Materialbahnen (3) und/oder um hohe Transportgeschwindigkeiten von Materialbahnen (3) geht. Hierbei kann ein Zeitpuffer geschaffen werden, insbesondere wenn die Klebungen auf der schnell laufenden Materialbahn (3) einen ausreichend großen Rapport haben. In diesem Fall dreht die Übergabewalze (8) mit einer Umfangsgeschwindigkeit, die im Wesentlichen der Bahnlaufgeschwindigkeit entspricht. Außerdem ist der Umfang bzw. Durchmesser der Übergabewalze (8) vorzugsweise so gewählt, dass er für die Aufbringung einer Klebelinie in der gewünschten Breite ausreicht. Die Übergabewalze (8) hat einen entsprechend geeigneten steuerbaren Drehantrieb und auch eine Zustellvorrichtung. Im Prozess gibt die vorzugsweise synchron drehende Übergabewalze (8) ihre übernommenen Haftklebetropfen (2) an die Materialbahn (3) in Zustellposition ab. Anschließend wird die Übergabewalze (8) zurückgezogen und in Kontakt mit dem Träger (1) gebracht, von dem sie eine neue Charge Haftklebepunkte (2) übernimmt. Hierfür dreht die Übergabewalze (8) entsprechend langsamer. Nach der Bestückung wird sie wieder an die Materialbahn (3) zum erforderlichen Zeitpunkt zugestellt und übergibt dieser die Haftklebepunkte (2). Wenn der Rapport der Materialbahn (3) zu kurz ist, können mehrere Übergabewalzen (8) in einer Magazinanordnung, z. B. einem Drehstern, angeordnet sein, um den Zeitpuffer zwischen der schnell laufenden Materialbahn (3) und der entsprechend schnellen Klebepunktübergabe einerseits und der langsamen Bewegung des Trägers (1) und der dortigen Klebepunktübergabe zu schaffen.The indirect transmission of Figure 3 has particular advantages when it comes to labile material webs (3) and / or high transport speeds of webs (3). In this case, a time buffer can be created, in particular if the bonds on the high-speed material web (3) have a sufficiently large repeat. In this case, the transfer roller (8) rotates at a peripheral speed substantially equal to the web running speed. In addition, the circumference or diameter of the transfer roller (8) is preferably selected so that it is sufficient for the application of an adhesive line in the desired width. The transfer roller (8) has a correspondingly suitable controllable rotary drive and also a delivery device. In the process, the preferably synchronously rotating transfer roller (8) transfers its accepted pressure-sensitive adhesive drops (2) to the material web (3) in the delivery position. Subsequently, the transfer roller (8) is withdrawn and brought into contact with the carrier (1), from which it takes over a new batch of pressure-sensitive adhesive dots (2). For this purpose, the transfer roller (8) turns correspondingly slower. After assembly, it is again delivered to the web (3) at the required time and passes this the pressure-sensitive adhesive points (2). If the repeat of the material web (3) is too short, a plurality of transfer rollers (8) in a magazine arrangement, for. B. a rotating star, be arranged to the time buffer between the fast-running Material web (3) and the correspondingly fast Klebypunktübergabe on the one hand and the slow movement of the carrier (1) and the local Klebypunktübergabe to create.
Die Draufsichten in Figur 4 zeigen vier mögliche unterschiedliche Anordnungen von Haftklebetropfen (2) auf einem Träger (1) in Form eines flächigen Rasters (20). Die Klebetropfen (2) sind sehr klein und haben z.B. einen Durchmesser ca. 0,5 bis 1 mm. Der Durchmesser kann alternativ kleiner oder auch größer sein und bis zu einigen Millimetern, z.B. bis zu 5 Millimeter betragen.The plan views in Figure 4 show four possible different arrangements of pressure-sensitive adhesive drops (2) on a support (1) in the form of a planar grid (20). The adhesive drops (2) are very small and have e.g. a diameter of about 0.5 to 1 mm. The diameter may alternatively be smaller or larger and up to a few millimeters, e.g. up to 5 millimeters.
Die Haftklebetropfen (2) sind in dem flächigen Raster (20) in mehreren Reihen nebeneinander ohne gegenseitige Berührung angeordnet. Die Abstände zwischen den Haftklebetropfen (2) sind etwa so groß wie deren Durchmesser oder kleiner. Die Haftklebetropfen (2) können in gleichmäßigen Reihen und Spalten und somit auf gleicher Längs- und Querlinie untereinander angeordnet sein. Die Klebetropfenreihen können alternativ mit Versatz angeordnet sein, wodurch die Packungsdichte erhöht wird.The pressure-sensitive adhesive drops (2) are arranged in the planar grid (20) in several rows next to each other without mutual contact. The distances between the pressure-sensitive adhesive drops (2) are about as large as their diameter or smaller. The pressure-sensitive adhesive drops (2) can be arranged in uniform rows and columns and thus on the same longitudinal and transverse line with each other. The adhesive bead rows may alternatively be offset, thereby increasing the packing density.
Ebenso können die Haftklebetropfen (2) in Form von Punkten, Quadraten oder sonstigem aufgebracht sein und deren Abstände zueinander derart variiert werden, dass Bereiche unterschiedlicher Packungsdichte entstehen.Likewise, the pressure-sensitive adhesive drops (2) can be applied in the form of dots, squares or the like and their distances from each other can be varied in such a way that regions of different packing densities are formed.
Die Haftklebetropfen (2) können eine beliebige kubische Form haben. Im bevorzugten Ausführungsbeispiel besitzen sie eine kugel- oder tropfenartige Form mit einem runden Querschnitt. Alternativ kann die Form auch zylindrisch oder rohrartig sein. Ferner können die Haftklebetropfen (2) eine kubische Form mit einem prismatischen Querschnitt haben.The pressure-sensitive adhesive drops (2) can have any cubic shape. In the preferred embodiment, they have a spherical or drop-like shape with a round cross-section. Alternatively, the shape may also be cylindrical or tubular. Further, the pressure-sensitive adhesive drops (2) may have a cubic shape with a prismatic cross-section.
Der Träger (1) ist als ein- oder beidseitig abweisender Träger (1) mit einer sehr niedrigen Adhäsionswirkung zu den Haftklebetropfen (2) ausgebildet. Hierfür kann der Träger (1) an ein oder beiden Seiten zum Beispiel eine silikonhaltige oder silikonfreie Antihaftbeschichtung oder dergleichen aufweisen.The carrier (1) is repellent as one or both sides Carrier (1) formed with a very low adhesion to the pressure-sensitive adhesive drops (2). For this purpose, the carrier (1) may have on one or both sides, for example, a silicone-containing or silicone-free non-stick coating or the like.
Wenn mit einer mehrstufigen Klebepunktübertragung und mit ein oder mehreren Übergabewalzen (8) oder anderen geeigneten Übergabemitteln gearbeitet wird, bedarf es einer abgestuften Adhäsionswirkung. Der Träger (1) hat hierbei die niedrigste und die letztendlich beklebte Materialbahn (3) die höchste Adhäsionswirkung. Die Übergabewalze(n) (8) hat bzw. haben dann eine dazwischen liegende Adhäsionswirkung, die es ermöglicht, einerseits die Haftklebepunkte vom Träger (1) auf die Übergabewalze (8) zu übertragen und von dort dann weiter auf die Materialbahn (3) abzugeben. Die Adhäsionswirkung ist außerdem so groß gewählt, dass während der freien Rotation der Übergabewalze (8) kein unerwünschtes Ablösen stattfindet.When working with a multi-stage adhesive dot transfer and with one or more transfer rollers (8) or other suitable transfer means, it requires a graded adhesion effect. The carrier (1) has in this case the lowest and the finally adhered material web (3) the highest adhesion effect. The transfer roller (s) (8) has or have an intervening adhesion effect which makes it possible, on the one hand, to transfer the pressure-sensitive adhesive points from the carrier (1) to the transfer roller (8) and then to deliver it from there to the material web (3) , The adhesion effect is also chosen so large that during the free rotation of the transfer roller (8) no unwanted detachment takes place.
Die Klebetropfen (2) bestehen aus einem Haftkleber, dessen innere Kohäsionskräfte größer sind als die äußeren Adhäsionskräfte gegenüber dem Träger (1). Die Haftklebetropfen (2) lassen sich dadurch zerstörungsfrei vom Träger (1) lösen, wenn sie an ihrer freien Seite mit der Materialbahn (3) in Kontakt kommen, die eine größere Adhäsionswirkung oder Haftwirkung als der Träger (1) hat. Der Haftkleber kann aus einem beliebigen geeigneten Material bestehen, zum Beispiel Dispersionen, Acrylaten oder synthetischem Kautschuk. Der Haftkleber kann auch durch einen Schmelzkleber gebildet sein, der mit Kälte oder dergleichen schockgekühlt ist. Die Klebekraft bzw. die Kohäsions- und Adhäsionswirkung lässt sich je nach Anwendungsbereich und Bedarf variieren, zum Beispiel über die Flächengröße, die Höhe und die Abstände der Haftklebetropfen (2) sowie über die Rezeptur des Klebstoffs.The adhesive drops (2) consist of a pressure-sensitive adhesive whose internal cohesive forces are greater than the external adhesion forces relative to the carrier (1). The pressure-sensitive adhesive drops (2) can thereby be detached from the carrier (1) without destruction, when they come into contact with the material web (3) on their free side, which has a greater adhesion or adhesive action than the carrier (1). The pressure-sensitive adhesive can be made of any suitable material, for example dispersions, acrylates or synthetic rubber. The pressure-sensitive adhesive may also be formed by a hot-melt adhesive which is shock-cooled with cold or the like. The adhesive force or the cohesion and adhesion effect can be varied depending on the field of application and requirements, for example about the area size, the height and the distances of the pressure-sensitive adhesive drops (2) as well as on the formulation of the Adhesive.
Die Haftklebetropfen (2) haben auf dem Träger (1) die vorbeschriebene geringe Haftung, so dass sie bei Berührung an der Materialbahn (3) haften bleiben und sich leicht vom Träger (1) lösen lassen. Je nach Kontaktdauer, Durchmesser der Andrückwalze und Rastermaß werden mehr oder weniger Tropfenreihen in relativer Laufrichtung der Materialbahn (3) abgelöst und auf die Materialbahn (3) übertragen. Wenn der Träger (1) beim Bahnkontakt durch den Transportantrieb umläuft und sich in relativer Laufrichtung mit entsprechender Geschwindigkeit mitbewegt, kann die Zahl der abgegebenen Tropfenreihen und damit die Länge der Klebefläche in Laufrichtung vergrößert werden.The pressure-sensitive adhesive drops (2) have on the carrier (1) the above-described low adhesion, so that they stick to the material web (3) and can be easily detached from the carrier (1). Depending on the contact duration, diameter of the pressure roller and grid dimension more or less rows of drops are detached in the relative direction of the web (3) and transferred to the web (3). If the carrier (1) rotates in the web contact through the transport drive and moves in the relative direction with appropriate speed, the number of dispensed rows of drops and thus the length of the adhesive surface in the direction can be increased.
Figur 5, 6 und 7 zeigen eine zweite und dritte Variante des Applikators (9), der hier zum indirekten Klebemittelübertrag und zum Auftragen eines Beiproduktes (13) der vorstehend geschilderten Art auf eine Materialbahn (3) dient. Die Materialbahn (3) wird mittels eines Förderers (10), der auch die Gegendruckfläche bildet, kontinuierlich oder intermittierend in Pfeilrichtung bewegt. In der gezeigten Ausführungsform besteht die Materialbahn (3) aus einzelnen in Reihe hintereinander angeordneten Materialien (11), z.B. in Blatt- oder Zuschnittform. Dies können Seiten eines Druckproduktes, aber auch Packmittelzuschnitte oder dergleichen sein. Statt einzelnen Materialien (11) kann auch eine durchgehende Materialbahn vorhanden sein.Figures 5, 6 and 7 show a second and third variant of the applicator (9), which serves here for indirect adhesive transfer and for applying a by-product (13) of the type described above on a material web (3). The material web (3) is moved by means of a conveyor (10), which also forms the counter-pressure surface, continuously or intermittently in the direction of the arrow. In the embodiment shown, the material web (3) consists of individual materials (11), arranged one behind the other in series, e.g. in sheet or blank form. These can be pages of a printed product, but also packaging blanks or the like. Instead of individual materials (11), a continuous material web may also be present.
Das Klebemittel (2) wird auf einem streifen- oder blattförmigen Träger (1) mittels der Zustellvorrichtung in Form eines Bandförderers (12) vorzugsweise parallel und mit gleicher oder entgegengesetzter Richtung zur Materialbahn (3) bewegt. Die einzelnen Beiprodukte (13) werden ebenfalls in einer Reihe hintereinander auf einem Förderer (14) mit vorzugsweise paralleler Ausrichtung in entsprechender Weise bewegt.The adhesive (2) is moved on a strip or sheet-shaped carrier (1) by means of the feed device in the form of a belt conveyor (12), preferably in parallel and with the same or opposite direction to the material web (3). The individual By-products (13) are also in a row one behind the other on a conveyor (14) with preferably parallel alignment in moved accordingly.
Die Auftragsvorrichtung (9) weist eine Greifeinrichtung (15) auf, die in beliebig geeigneter Weise und mit beliebiger Komplexität ausgebildet sein kann. Figur 5 zeigt schematisch eine Variante als Linearachsengerät oder sog. Portalroboter. In Figur 6 und 7 ist eine Abwandlung als sog. Drehroboter mit Linear- und Drehachsen oder als mehrachsiger Gelenkarmroboter schematisch dargestellt.The application device (9) has a gripping device (15), which can be designed in any suitable manner and with any complexity. FIG. 5 schematically shows a variant as a linear axis device or so-called gantry robot. FIGS. 6 and 7 schematically show a modification as a so-called rotary robot with linear and rotary axes or as a multi-axis articulated-arm robot.
Der Portalroboter besitzt eine die Förderer (10,12,14) quer überspannende Brücke (22) mit einem daran quer verfahrbaren Schlitten (23), der einen Greifarm (16) trägt, an dessen Ende ein geeigneter Greifer (17) für das Beiprodukt (13), z.B. ein Saugkopf, angeordnet und ggf. gelenkig gelagert ist. Der Greifarm (16) ist heb- und senkbar gelagert und kann ggf. den Greifer (17) drehen oder anderweitig bewegen. Die Brücke (22) und ggf. der Greifarm (16) können zudem in Fördererlaufrichtung verfahrbar sein, um z.B. mit den Förderern (10,12,14) ein Stück synchron mitzufahren. Pfeile zeigen die potenziellen Bewegungsmöglichkeiten.The gantry robot has a bridge (22) transversely spanning the conveyors (10, 12, 14) with a carriage (23) movable transversely thereto, which carries a gripping arm (16) at the end of which a suitable gripper (17) for the by-product (16) 13), eg a suction head, arranged and possibly articulated. The gripper arm (16) is mounted raised and lowered and can possibly rotate the gripper (17) or otherwise move. The bridge (22) and possibly the gripping arm (16) can also be moved in the conveyor running direction, for. with the conveyors (10,12,14) take a piece synchronously. Arrows indicate the potential movement possibilities.
Der Drehroboter besitzt einen stationären oder verfahrbaren Sockel (24) mit einem Greifarm (16) nebst Greifer (17) für das Beiprodukt (13). Der Greifarm (16) ist am Sockel (24) um eine Hochachse (18) drehbeweglich sowie heb- und senkbar gelagert und kann in sich gelenkig sein. Die Achse (18) befindet sich zwischen den Förderern (10,12,14), so dass der Greifarm (16) mit der in Figur 6 gezeigten und durch einen Pfeil verdeutlichten Schwenkbewegung alle drei Förderer (10,12,14) erreicht.The rotary robot has a stationary or movable base (24) with a gripping arm (16) together with grippers (17) for the by-product (13). The gripper arm (16) is rotatably mounted on the base (24) about a vertical axis (18) and can be raised and lowered and can be articulated in itself. The axis (18) is located between the conveyors (10,12,14), so that the gripper arm (16) reaches all three conveyors (10,12,14) with the pivoting movement shown in Figure 6 and illustrated by an arrow.
Die Greifeinrichtung (15) nimmt vom Förderer (14) ein Beiprodukt (13) mit dem Greifarm (16) auf, schwenkt es über den Träger (1) und drückt es auf die dortigen Haftklebetropfen (2) auf, die dadurch auf die Unterseite des Beiprodukts (13) haftend übertragen werden. Anschließend hebt der Greifarm (16) das Beiprodukt (13) wieder an, bewegt es über die Materialbahn (3) bzw. das einzelne Material (11), orientiert es ggf und senkt es dann wieder ab, wobei es auf das Material (11) aufgedrückt und angeklebt wird. Anschließend lässt der Greifer (17) das Beiprodukt (13) los und kehrt in die Ausgangsstellung über dem Förderer (14) zurück, um das nächste Beiprodukt (13) zu greifen. Die Förderer (10,12,14) können kontinuierlich oder intermittierend bewegt werden.The gripping device (15) picks up a by-product (13) from the conveyor (14) with the gripping arm (16), pivots it over the carrier (1) and presses it onto the local pressure-sensitive adhesive drops (2), which thereby reach the underside of the by-product (13) are adhesively transferred. Subsequently, the gripper arm (16) raises the by-product (13) again, moves it over the material web (3) or the individual material (11), optionally orientates it and then lowers it again, wherein it touches the material (11). is pressed and glued. Subsequently, the gripper (17) releases the by-product (13) and returns to the initial position above the conveyor (14) to grip the next by-product (13). The conveyors (10,12,14) can be moved continuously or intermittently.
Figur 8 zeigt eine vierte Variante des Applikators (9). Dieser weist außer einer Greifeinrichtung (15) auch eine andere Zuführeinrichtung (19) für den Klebstoffträger (1) in Form eines stationär angeordneten und vorzugsweise motorisch angetriebenen Rollenspenders auf. Der Klebstoffträger (1) ist in dieser Ausführungsform auf einer Speicherrolle (4) aufgewickelt und wird über eine motorisch angetrieben Rollenführung intermittierend abgezogen. Auf einer Umlenkrolle (21) mit einem kleinen Durchmesser wird der Träger (1) zur Abnahme der Haftklebetropfen (2) der Greifeinrichtung (15) präsentiert, welche wiederum einen mehrachsig beweglichen Greifarm (16) mit einem Greifer (17) aufweist. Der leere Träger (1) wird abgeführt und entsorgt.FIG. 8 shows a fourth variant of the applicator (9). This has in addition to a gripping device (15) and another feed device (19) for the adhesive carrier (1) in the form of a stationary arranged and preferably motor-driven roller dispenser. The adhesive carrier (1) is wound in this embodiment on a storage roll (4) and is withdrawn intermittently via a motor-driven roller guide. On a deflection roller (21) with a small diameter of the support (1) for removing the pressure-sensitive adhesive drops (2) of the gripping device (15) is presented, which in turn has a multi-axially movable gripping arm (16) with a gripper (17). The empty carrier (1) is removed and disposed of.
Auch bei diesem Ausführungsbeispiel wird ein Beiprodukt (13) vom Greifer (17) gehalten und gegen den Träger (1) gepresst. Durch die Umlenkrolle (21) wird bei dieser Ausführungsform ein im Wesentlichen linienförmiger Kontakt erzeugt, wobei nur ein oder wenige Reihen von Haftklebetropfen (2) auf die Unterseite des Beiprodukts (13) übertragen werden. Je kleiner der Durchmesser bzw. je enger die Krümmung der Umlenkrolle (21) ist, desto schmaler ist der Kontaktbereich und desto weniger Tropfenreihen werden übertragen. Das Beiprodukt (13) wird anschließend auf die Materialbahn (3) gepresst und angeklebt.Also in this embodiment, a by-product (13) is held by the gripper (17) and pressed against the carrier (1). In this embodiment, a substantially line-shaped contact is produced by the deflection roller (21), wherein only one or a few rows of pressure-sensitive adhesive drops (2) are transferred to the underside of the by-product (13). The smaller the diameter or the narrower the curvature of the deflection roller (21), the narrower is the contact area and the fewer rows of drops are transferred. The by-product (13) is then pressed onto the material web (3) and glued.
In den Ausführungsbeispielen von Figur 5 bis 7 wird durch den im Übernahmebereich ebenen Förderer (12) die Unterseite des Beiprodukts (13) über den Raster (20) im Wesentlichen vollflächig mit Klebstoff versehen. Bei der Ausführungsform von Figur 7 kann der Klebestreifen wesentlich kleiner sein nur einen Teil der Unterseite des Beiprodukts (13) bedecken.In the exemplary embodiments of FIGS. 5 to 7, the underside of the by-product (13) is provided with adhesive over the grid (20) substantially over the entire area by the conveyor (12) which is flat in the transfer region. In the embodiment of Figure 7, the adhesive strip may be substantially smaller covering only part of the underside of the by-product (13).
Abwandlungen der gezeigten Ausführungsformen sind in verschiedener Weise möglich. Dies betrifft die konstruktive Ausgestaltung der Greifeinrichtung (15), des Spenders (19) und andere Teile der Auftragvorrichtung (9). Für höhere Transfergeschwindigkeiten können für die Greifeinrichtung (15) rotierende Trommeln oder Walzen ähnlich der Ausführungsform von Figur 3 eingesetzt werden, wobei die Beiprodukte (13) auf der Trommel durch Saugkraft oder dgl. temporär gehalten werden. Die Haftklebetropfen werden vom vorbeibewegten Träger (1) auf die rotierenden Beiprodukte (13) übertragen, die anschließend auf die Materialbahn (3) abgegegeben werden.Modifications of the embodiments shown are possible in various ways. This concerns the structural design of the gripping device (15), the dispenser (19) and other parts of the applicator device (9). For higher transfer speeds, rotating drums or rollers similar to the embodiment of Fig. 3 may be employed for the gripper (15), with the by-products (13) temporarily held on the drum by suction or the like. The pressure-sensitive adhesive drops are transferred from the pasted carrier (1) to the rotating by-products (13), which are subsequently dispensed onto the material web (3).
Ferner können Art und Ausgestaltung der Haftklebetropfen (2) sowie auch deren Rasterform (20) variieren. Auch die Form, das Material und die Eigenschaften des Trägers (1) sind abwandelbar.Furthermore, the type and configuration of the pressure-sensitive adhesive drops (2) and also their raster shape (20) can vary. Also, the shape, the material and the properties of the carrier (1) are modifiable.
- 11
- Träger, KlebstoffträgerCarrier, adhesive carrier
- 22
- HaftklebetropfenAdhesive beads
- 33
- Materialbahnweb
- 44
- Speicherrollestorage roll
- 55
- Aufnahmerolleup roll
- 66
- GegendruckflächeCounterpressure surface
- 77
- Zustellvorrichtunginfeed
- 7'7 '
- Andrückwalzepressure roller
- 88th
- Übergabeelement, ÜbergabewalzeTransfer element, transfer roller
- 99
- Auftragvorrichtung, ApplikatorApplicator, applicator
- 1010
- Förderer MaterialbahnConveyor material web
- 1111
- Material, PackmittelzuschnittMaterial, packaging cut
- 1212
- Zuführeinrichtung, Förderer KlebstoffträgerFeeding device, conveyor adhesive carrier
- 1313
- Beiproduktbyproduct
- 1414
- Förderer, BeiproduktConveyor, by-product
- 1515
- Greifeinrichtunggripper
- 1616
- Greifarmclaw arm
- 1717
- Greifer, SaugerGripper, sucker
- 1818
- Achseaxis
- 1919
- Spenderdonor
- 2020
- Raster, RasteranordnungGrid, grid arrangement
- 2121
- Umlenkrolleidler pulley
- 2222
- Brückebridge
- 2323
- Schlittencarriage
- 2424
- Sockelbase
Claims (19)
- Method for automatic adhesive transfer by means of an application device (9) to a material web (3), in particular a paper or film or board web, the application device (9) and the material web (3) being moved relative to each other, characterized in that, by using a supply device (12, 19), at least one carrier (1) having a large number of small contact adhesive beads (2) is supplied to the application device (9), the contact adhesive beads (2) being separated from the supplied carrier (1) by means of the controllable application device (9) and transferred to the material web (3) directly or indirectly.
- Method according to Claim 1, characterized in that the contact adhesive beads (2) are transferred from the carrier (1) to the material web (3) directly and immediately.
- Method according to Claim 1, characterized in that the contact adhesive beads (2) are transferred from the carrier (1) to the material web (3) directly and indirectly via an interposed transfer element (8), preferably a rotatable transfer roll.
- Method according to Claim 1, characterized in that the contact adhesive beads (2) are transferred from the carrier (1) to at least one associated product (13) and transferred to the material web (3) with the latter.
- Method according to one of the preceding claims, characterized in that the contact adhesive beads (2) are provided as spaced apart individual beads on the carrier (1) in a two-dimensional grid (20).
- Apparatus for automatic adhesive transfer by means of an application device (9) to a material web (3), in particular a paper or film or board web, the application device (9) and the material web (3) being moved relative to each other, characterized in that the apparatus has at least one supply device (12, 19) for at least one carrier (1) having a large number of small contact adhesive beads (2) to the application device (9), and the controllable application device (9) for the separation of the contact adhesive beads (2) from the carrier (1) supplied and the direct or indirect transfer of the contact adhesive beads (2) to the material web (3).
- Apparatus according to Claim 6, characterized in that the application device (9) has a feed device (7), which brings the carrier (1) having the contact adhesive beads (2) into touching contact with the material web (3).
- Apparatus according to Claim 6, characterized in that the application device (9) has a movable transfer element (8) arranged between the carrier (1) and the material web (3), preferably a transfer roll that can be rotated under control, to transfer the contact adhesive beads (2) to the material web (3) .
- Apparatus according to Claim 6, characterized in that the application device (9) has a gripping device (15) for associated products (13), with which device the contact adhesive beads (2) are transferred to the associated products (13) and the associated products (13) are applied to the material web (3).
- Apparatus according to one of the preceding Claims 6-9, characterized in that the supply device (12, 19) has a controllable transport drive for the preferably revolving movement of the carrier (1).
- Apparatus according to one of the preceding Claims 6-10, characterized in that the carrier (1) is mounted on a storage roll (4) and is led over a pressure roll (7) to a receiving roll (5), which accommodates the used carrier material.
- Apparatus according to one of the preceding Claims 6-11, characterized in that the contact adhesive beads (2) are arranged on the carrier (1) in a two-dimensional grid (20) without mutual contact.
- Apparatus according to one of the preceding Claims 6-12, characterized in that the adhesion of the contact adhesive beads (2) to the carrier (1) is less than their cohesion, it being possible for the contact adhesive beads (2) to be separated from the carrier (1) in the event of contact with the material web (3) or the associated product (13).
- Apparatus according to one of the preceding Claims 6-13, characterized in that the carrier (1) is formed as a carrier (1) repellent on one or both sides with a low adhesive action in relation to the contact adhesive beads (2).
- Apparatus according to one of the preceding Claims 6-14, characterized in that the contact adhesive beads (2) have a diameter of about 0.5 to 5 mm.
- Apparatus according to one of the preceding Claims 6-15, characterized in that the contact adhesive beads (2) have a shape like a sphere, cylinder, tube or droplet with a round cross section.
- Apparatus according to one of the preceding Claims 6-16, characterized in that the contact adhesive beads (2) have a cubic shape with a prismatic cross section.
- Apparatus according to one of the preceding Claims 12-17, characterized in that the grid (20) consists of a plurality of rows of contact adhesive beads (2) which are arranged beside one another, whose spacings can be varied freely and which are formed regularly or uniformly.
- Apparatus according to one of the preceding Claims 6-18, characterized in that the contact adhesive beads (2) consist of a contact adhesive that is applied cold or hot.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20311530U DE20311530U1 (en) | 2003-07-26 | 2003-07-26 | Device for mechanical adhesive transfer |
DE20311530U | 2003-07-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1502888A2 EP1502888A2 (en) | 2005-02-02 |
EP1502888A3 EP1502888A3 (en) | 2005-04-06 |
EP1502888B1 true EP1502888B1 (en) | 2007-09-05 |
Family
ID=33495294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04017641A Expired - Lifetime EP1502888B1 (en) | 2003-07-26 | 2004-07-26 | Method and apparatus for automatic adhesive transfer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1502888B1 (en) |
AT (1) | ATE372290T1 (en) |
DE (2) | DE20311530U1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108382916A (en) * | 2018-02-28 | 2018-08-10 | 广州九恒条码有限公司 | Glue spreading apparatus |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH648497A5 (en) * | 1982-09-24 | 1985-03-29 | Billeter Kunststoffpulver Ag | Device for surface coating, directly or according to the transfer printing principle, a substrate |
DE3628194A1 (en) * | 1986-08-20 | 1988-02-25 | Siemens Ag | RIBBON FOR DYE TRANSFER UNDER THE INFLUENCE OF HEAT |
DE3716520A1 (en) * | 1987-05-16 | 1988-12-01 | Kleinewefers Gmbh | Device and process for applying adhesive |
DE29502723U1 (en) * | 1995-02-18 | 1996-06-20 | Planatol Klebetechnik GmbH, 83101 Rohrdorf | Treatment device, in particular cross gluing unit |
DE29713744U1 (en) * | 1997-08-01 | 1998-12-03 | Planatol Klebetechnik GmbH, 83101 Rohrdorf | Glue and / or moistening device |
DE19819054B4 (en) * | 1998-04-29 | 2007-10-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and device for mounting and adjusting components on a mounting base |
DE29911781U1 (en) * | 1999-07-06 | 1999-09-09 | Voith Sulzer Papiertechnik Patent GmbH, 89522 Heidenheim | Device for applying a liquid or pasty application medium to a running surface |
-
2003
- 2003-07-26 DE DE20311530U patent/DE20311530U1/en not_active Expired - Lifetime
-
2004
- 2004-07-26 AT AT04017641T patent/ATE372290T1/en not_active IP Right Cessation
- 2004-07-26 EP EP04017641A patent/EP1502888B1/en not_active Expired - Lifetime
- 2004-07-26 DE DE502004004852T patent/DE502004004852D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE20311530U1 (en) | 2004-12-02 |
EP1502888A3 (en) | 2005-04-06 |
ATE372290T1 (en) | 2007-09-15 |
EP1502888A2 (en) | 2005-02-02 |
DE502004004852D1 (en) | 2007-10-18 |
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