EP3268525B1 - Method and device for producing a weaving reed and weaving reed - Google Patents

Description

Web leaves and methods for their production are known. Web leaves are used in prior art weaving methods for pressing the weft thread that has just been introduced through the shed onto the already finished fabric. For this purpose, the reed has a series of slats which follow each other in the width direction of the reed. Between these slats there are gaps that provide space for the warp threads. In general, the lamellae are bordered by edges of the reed, so that the reed also has a certain stability and thus manageability. These edges mostly have a U-shaped profile and consist of e.g. made of light metal.

There are a number of manufacturing processes for such reeds has become known, among others from the DE 2 226 194 A to be listed:

On the one hand, it is customary initially to wrap the lamellae with the aid of half-round rods in their end regions with wires. On the one hand, the wires set the distance between the slats, which is necessary to give the warp threads the necessary space during weaving operation. On the other hand, the wires also produce a first attachment of the slats together. In a further processing step, the ends of the slats are introduced into a U-shaped profile, which is preferably cast with synthetic resin or other adhesives with the slats. In this way, the above-mentioned edges of the reed arise. In addition to the aforementioned distance adjustment by winding with wires coil springs are pressed between the edges of the slats. This is to help in the exact adjustment of the distance of the slats. These spiral springs and the semicircular rods with the wires are then covered with an adhesive layer flush with the edges of the reed. The wires for wrapping and for the coil springs must have a high degree of uniformity Have diameter and stored for each required fin spacing. The wrapping is constantly monitored due to unavoidable variations in wire diameter and lamella thickness. The introduction of the coil springs is handmade.

Another method for the production of reeds, which is described in the aforementioned document, is to insert spacers as spacers between the slats or paste. The ends of the slats remain free and then glued to the edges of the reed. Thereafter, the spacers are removed or removed again.

The publication JP 2001 003240 A shows steps for producing a Handwebblattes. After the lamellae of the relevant reed are spaced apart and fixed in steps not disclosed in detail, thread eyes are made between two lamellae in which adhesive is extruded in the space between the lamella concerned. The publication DE 2150 275 A1 shows another method for producing a reed, in which initially a part of the frame parts thereof, which consists of thermoplastic material, is softened by heat input, after which the lamellae are pressed into these parts.

One of the disadvantages of the illustrated methods is that they would have to use or use expensive and tolerant spacers to accurately set the spacing between adjacent slats. These semi-finished products are elaborately incorporated and permanently stored in various designs. Of course, this exercise is associated with correspondingly high costs.

In the latter method, these spacers must be removed again from the blade interstices, which leads to further inaccuracies in the fin spacing. In addition, the methods mentioned - again due to the insertion of expensive spacers - not cheap.

Due to these circumstances, the object of the present invention is to provide a cost-effective and accurate method and apparatus for producing a reed.

This object is solved by claims 1 and 11. Subject matter of claim 12 is a reed, which can be prepared according to claim 1.

The object is achieved by a method in which the lamellae are provided with a predetermined amount of a viscous substance for the exact adjustment of the required distance and for the first attachment. This creates reeds, which have a higher uniformity of the distances of the slats, because no distance tolerances are introduced by semi-finished products and the method of their introduction.

The slats have a strip or band-like shape. The length of the slats is determined by the geometry of the shed and the movement of the reed in relation to the shed. In the state installed in the loom, the length direction of the slats points essentially in the vertical direction and perpendicular to the warp thread. The length of the slats must on the one hand provide sufficient space for the movement of the warp threads, in addition, the end portions of the slats must be integrated to stabilize the reed in the edges of the reed. The thickness of the sipes to be measured in the widthwise direction of the reed is, in particular, of fine pitch of the same order of magnitude as the spaces between the sipes and, like the width of the sipes, is determined by the requirements of the reefing of the reed. The ratio between the width of the slats and the width of the gaps may shift at less fine pitches, such that the gap may be, for example, 70% of the pitch. The lamellae for reeds of air-jet looms may have on the fabric side special shapes for forming an air duct. Common to all slats that they have only two opposite sides, the surfaces have a certain size, the other body sides are only narrow edges.

The slats are advantageously aligned to produce the reed together in an orientation that their flat faces face each other. On the faces of the lamellae and in particular on their end portions, which are later covered by the edges of the reed, is an order of a predetermined amount of a viscous substance applied. This order keeps the lamellae at a distance. On the other hand, the lamellae can be permanently connected to one another by this application, for example when the applied substance is an adhesive.

In order for the aforementioned distance, which is adjusted by the application of the viscous substance, has the right amount, the applied amount of the substance must match exactly with a predetermined size. For this purpose, it is advantageous if the metering metering the correct amount of the viscous substance, that can also portion. This portioning is usually done before bringing the slats together. It is usually also without a Portionierform, which envelops the slats. Rather, an amount is applied to an end face of the respective slats, which is predetermined before the order. This specification, for example, the metering device can be made by the operator. It is advantageous to use control devices for the metering device, which determine the quantity specified on the basis of the substances used and the distances between the lamellae and / or other values to be set.

For example, if the application is drop by drop, the height of the drop on the face of the first fin to which it has been applied will determine the distance to the next fin when this first fin is joined to the next fin. It should be noted that the shape and thus also the height of the drop can change several times depending on its contact properties (for example wetting). After the viscous material has wetted the first fin, a specific shape of the drop will be established at the interface. After contacting with the second lamella, such a specific shape also arises at the second interface. The height of the now enclosed and deformed drop between two surfaces changes according to its present volume. Furthermore, the height and thus also the shape of the drop when bringing the slats can be selectively changed, which will be described below.

As a rule, methods according to the invention thus provide a volume or a mass which is used for spacing two slats. These Volumes often spaced the lamellae of a reed successively. In the above-described methods of the prior art, although often adhesives - and thus viscous substances used - to shed the spaced by wire or other solid lamellae and thus to fix. However, no predetermined volumes are used in the sense of the present invention. Nor are any quantities of viscous substances used for the (initial) adjustment of the distance between the lamellae used.

The viscosity of the substance used must at least have a value that allows the order to maintain the required distance between the lamellae. On the other hand, the viscosity must not be so high that the application of the substance in the given amount is no longer possible, because the necessary for the application of fluidity is no longer present. For the application of the substance, a metering device can be used, which uses to transport the substance snails, pressure surges by thermal or piezo actuators or other systems, such as those used in the field of inkjet printers application. Each of the different processes can process substances of specific viscosity. It is advantageous if the viscosity (and thus also the fluidity) of this substance moves during its processing or during the order on the slats in a range in which the predetermined amount of the viscous substance can be portioned. On the other hand, it is advantageous if the viscosity at this time - or at a foreseeable time after the application - is high enough to sustainably space two slats. A whole range of adhesives, but also of resins and paraffins meet these requirements. Often setting a specific temperature range or other environmental physical quantities is necessary to bring the physical or chemical state of the viscous material into the processable state. From the above facts it follows that also thermoplastics and mixtures of mutually reactive substances come as viscous substances in the context of the present document in question.

In all embodiments of the invention is in the finished, already produced reed the predetermined amount of the originally viscous and in its processing portionable substance with which the original spacing of the adjacent lamellae was made, still between the lamellae. This also applies in the cases in which the end regions of the lamellae, after being joined together, are potted with another viscous substance which likewise hardens. In the latter case, therefore, the two above-mentioned substances - the predetermined amount of the originally viscous substance and a quantity of the Vergussstoffes - before. Of course, this applies in particular to the end regions of the slats. In particular, in these end regions, these two substances therefore occur in the immediate vicinity or directly adjacent to one another. Often, the predetermined amount of the first substance may be enclosed by the potting compound.

A manufacturing process according to the invention may be advantageous, in particular, for finely divided reeds (for example 50 fins per cm or more), because the corresponding quantities of the material [for example 500 pl (picoliter) or less] can be applied with exact repeatability and the scattering below that the otherwise used semi-finished products are.

The order of the predetermined amount of the viscous substance can be made in drop or dot form, in the form of a bead or areal. The exact spacing of the slats should be ensured over their entire length and width extent, so that the parallelism of the end faces is given in total. As described above, the height of the applied material - at least in its cured state - before the distance of the slats. The size of the surface of the job can affect the time required to apply the viscous material, larger surfaces are correspondingly more expensive. Larger surfaces may possibly improve the parallelism of the fins and the strength of the adhesive bond. The residual surface on the end faces and, if applicable, the flow behavior during the subsequent bonding to the edges of the reed, which are present for the subsequent, second bonding with the edges of the reed, are influenced by the design of the job. In the exemplary embodiments, individual embodiments are shown and their effect is discussed.

As a rule, the slats are made of steel. For example, in the manufacture of the reed, the lamellae can be unwound directly from a lamella reel and cut to length. On the isolated lamella then the order of the predetermined amount of viscous substance is applied to one of its faces. Thereafter, the lamella with its end face, which now has an order of the viscous substance, brought together with another lamella. There are also other advantageous possibilities for the chronological sequence of the first two method steps mentioned: The later lamella can also be provided with the application of the viscous substance before it is cut to length. Generally speaking, it is also possible to use all process times for the application of the viscous substance, in which the viscous material can be applied to the end face, regardless of whether a transport, a cutting or another advantageous or required process step is carried out simultaneously. An important prerequisite for a simultaneous application of the viscous substance to the end face is the accessibility of the end face for the metering device. Advantageously, the job can also be applied to the last scheduled slat. When using several dosing devices, the application can also be applied to both lamellas, which are brought together in the next step.

In general, however, a reed according to the present invention will be made by a series of successive orders of the viscous material. One or more jobs serve to set a distance between two slats. In prior art methods, the distances are set with solids and then the upper and lower edges of the reed are simultaneously potted. However, a simultaneous casting of an edge of a reed according to the invention should not be excluded.

The first permanent connection of the slats can be made by adhesive, which is applied in an initially viscous form and in a predetermined amount. Particularly preferred are adhesives whose curing behavior can be specifically influenced. After the adhesive has cured, the joined lamellae can be fed to further operations, such as gluing the edges of the reed, without that there is a risk that the distances or the parallelism of the slats deteriorate again by a transport process.

It is also advantageous if adhesives are used whose curing behavior can be influenced by energy input. For example, adhesives can be used which cure faster under the action of UV light or high temperature. Also conceivable are differently activatable adhesive systems or fast-curing adhesives. Thus, substances are advantageous in which it comes through the aforementioned energy input to an activation, such as to trigger a chemical reaction.

A particularly advantageous method results when several different viscous substances are applied. The different viscous substances can be applied in a common process step. The different viscous substances can have a different curing behavior.

For example, a first viscous material may be a spacer material that cures directly upon application and only serves for spacing without having an adhesive effect. Such a substance could be, for example, a paraffin. The strength of the hardened spacer material should be high enough to be able to reliably space the lamellae, for example, against occurring capillary forces.

It is particularly advantageous to use spacer materials which, after cured bonding, can be washed out of the reed or otherwise discharged. The washing or discharging can be assisted or caused, for example, by solvents or heat. The use of leachable spacer materials also makes it possible to apply "spacers" between the lamellae even in the area where the warp threads are made during weaving. Thereby, the adjustment of the distance and the parallelism can be supported very advantageous.

A second viscous fabric may be an adhesive as stated above. The adhesive should not harden until the lamella has been joined with another lamella in order to permanently bond them together. The spacer material can be chosen so that it hardens faster and his Final strength has already reached when the slats are joined. The lamellae can then be brought together so far that the spacer material prevents further approximation, to then cure the adhesive. The curing of the adhesive may be initiated or assisted as mentioned above by energy input or other methods.

It is also conceivable that more than two different viscous substances are used. So it may be advantageous to use as a spacer material several different substances. In the area in which the warp threads are carried out during weaving, only washable or dischargeable spacer materials come into question (since they have to be removed again). In the end areas, which are covered by the edges of the reed, could also be used spacer materials that can not be washed out. Advantageous for spacer materials are also viscous substances that can be plastically deformed after curing. This advantage comes into play, for example, in the regulated methods described later.

In particular, when using multiple viscous substances, it is also possible to use a different predetermined amount for each of the viscous substances. For example, the predetermined amount may be selected so that the faster curing spacer materials have a lower height measured from the end face of the blade than the application of the adhesives. This ensures that the spacer materials correctly adjust the distance and that the adhesives safely wet the lamellae to which the application has not been applied directly in order to ensure sufficient strength of the adhesive bond. For this purpose, the contact force must be chosen large enough during assembly to displace the viscous adhesive until both lamellae have contact with the spacer materials. As mentioned above, more than two different viscous substances can also be used. Then, for each of the viscous substances another different predetermined amount can be used. Likewise, the predetermined amount may be different for a viscous substance, for example, depending on whether the corresponding order takes place in the end region of the end face or in its central region in which the warp threads are made during weaving.

• Die Regelung kann zum Beispiel auf der Basis der Verwendung von auch im ausgehärteten Zustand verformbaren (z.B. plastische Verformung) Abstandsmaterialien beruhen. Bei solchen Abstandsmaterialien kann durch die Anpassung des Anpressdrucks der neu anzufügenden Lamelle an die bestehenden bzw. durch die Anpassung der relativen Lage der Lamellen zueinander, das Abstandshaltematerial solange (plastisch) verformt werden, bis der geforderte Abstand vorliegt.
• Des Weiteren ist als vorteilhaft anzusehen, in Abhängigkeit von dem aktuellen Messwert die vorgegebene Menge für den nächsten Auftrag des viskosen Stoffes bzw. der viskosen Stoffe anzupassen.
• Es ist auch die Kombination beider vorgenannter Regelgrößen oder auch die Hinzunahme weiterer Regelgrößen denkbar.

Vorteilhaft kann auch ein Verfahren eingesetzt werden, in dem der Abstand durch entsprechende Steuerung der Handlingvorrichtung, die die Lamellen zusammenbringt, eingestellt wird. Zum Beispiel kann die zuletzt angebrachte Lamelle solange von der Handlingvorrichtung festgehalten werden, bis die erste Klebung ausgehärtet ist. Die vorgegebene Menge des Klebstoffs muss dann zumindest so groß gewählt werden, dass beide Lamellen sicher mit Klebstoff benetzt und somit nach dessen Aushärtung verbunden werden. Ein Abstandsmaterial wäre dann nicht notwendig.When joining the slats, it may be advantageous to monitor the distance of the slats by measurement, to set up a control loop for the exact adjustment of the distance. The measurement can be done optically, for example, but any other suitable measuring method is also conceivable. There are several advantageous procedures for the regulation:

• The control can be based, for example, on the basis of the use of deformable (eg plastic deformation) spacer materials even in the cured state. In the case of such spacer materials, by adapting the contact pressure of the newly added lamella to the existing one or by adapting the relative position of the lamellae to one another, the spacer material can be (plastically) deformed until the required distance is reached.
• Furthermore, it can be regarded as advantageous to adjust the predetermined quantity for the next application of the viscous substance or viscous substances, depending on the current measured value.
• It is also the combination of both aforementioned control variables or the addition of other control variables conceivable.

Advantageously, a method can be used in which the distance is adjusted by appropriate control of the handling device that brings the slats together. For example, the lamella last attached may be held by the handling device until the first bond has cured. The predetermined amount of the adhesive must then be at least chosen so large that both lamellae are wetted securely with adhesive and thus connected after its curing. A spacer material would not be necessary then.

A device according to the invention for the production of reeds is essentially characterized by a metering device which is set up to apply one or more viscous substances to a lamella. It is advantageous if the order quantity for each viscous substance and / or for each individual application process can be specified separately. The metering device can apply according to one of the aforementioned principles. In particular for spacer materials, the metering device can be equipped with a heater. Additional units that can support the dosage of the required viscous substances, can be provided.

Advantageously, a first handling device which brings the slats with their end face in an order position of the metering device. This handling device may be preceded by a device for unwinding and cutting tape and / or a bearing for individually prepared slats. For example, for lamellae of air-jet looms, which have a geometry with air duct, a storage of the lamellae in a warehouse is particularly advantageous. This first handling device is adapted to transfer the slats in a coating position. In order to be able to apply one or more viscous substances to the end face of the lamella at any point, the lamellae in the coating position and / or the metering device must be arranged displaceable relative to one another at least in two axes. In addition, a further axis for the adjustment of the distance from the coating position of the blade to the metering device or other axes may be present. At least a second handling device can be provided. This brings the coated lamella out of the coating position and brings it with its coated end face into contact with a previously applied lamella. As described above, this second handling device can be set up in such a way that the relative position with which the newly coated lamella is brought into contact with the previous one can be predetermined individually for each lamella.

An inventive reed has between two adjacent lamellae on at least one body of a predetermined amount of a cured originally viscous material, which is in abutment with both end faces of the adjacent lamellae. This or these bodies or a subset of these bodies can produce a permanent adhesive bond between the slats and / or adjust the distance between the slats. It should be noted that the hardened material may have a different volume than the lower viscous material.

This or these bodies can assume different geometries such as points, beads or others (see further above) and cover different sized areas of the end faces. The body (s) of a given quantity from a cured originally viscous material can be found in the end regions of the slats. In this case, the end regions of the lamella are the outer regions of the lamellae which are covered in the longitudinal direction of the lamellae and which are covered by the edge of the reed. The longitudinal direction of the slats corresponds to the height direction of the reed when the slats are installed in the reed. It is advantageous if, at least in the end regions in which the edges of the reed are fastened, areas can be found between adjacent lamellae in which adhesives or other fastening means (eg solder or the like) are present, with which the edges of the reed attached to the slats.

As a rule, a plurality of bodies of a predetermined quantity consisting of a hardened originally viscous material are present between adjacent lamellae, which bodies preferably have at least partially the same volume. Such volume-identical bodies are present in particular when the application of the viscous substance was punctiform or in other geometries with a small surface area. The volumes then differ only in the order given by the tolerance of the metering device. Thus, the uniformity of the spacing of the slats depends on the precision of the metering device, if only these bodies are used for spacing and, for example, no controlled process variant for producing the reed has been selected. The scattering spreads resulting from the scattering of the expansion of the bodies from the cured originally viscous material results in smaller inaccuracies in the spacing than the use of standard semi-finished products such as wires or wire spirals. The viscous substances may be added to a certain proportion of solids, which can contribute to compliance with the distance measure. Other additives known from adhesive technology may also have been added to the viscous materials. But it may also be advantageous to proceed without solids in the viscous materials, especially when a controlled or controlled process - as described above - is used.

The reed has an edge region in which the lamellae are connected to each other but also with one or more externally applied profiles. These profiles can be glued on, as earlier mentioned. These profiles are, after the first attachment of the slats together, applied to give the reed a higher stability and to attach it to the loom in the loom, without directly exerting force on the slats here. In the case of reeds of the prior art, a symmetrical, U-shaped profile is often used for this purpose at the top and bottom of the reed. The wrapping of the slats, as carried out in the method of the prior art, usually results in that the slats on the warp thread entry side and on the Kettfadenaustrittsseite are symmetrically, that is involved in the same position in the height direction. An asymmetric wrapping in this sense can lead to slippage of the wires. Therefore, so asymmetrically wrapped lamellae are not found in the prior art. The weaving reed according to the invention can have an edge with an asymmetrical profile as a result. It is conceivable both a single asymmetrical profile but also two or more flat or L-shaped profiles in the form of plate-like objects that are mounted in the edge region. The edges of the reed may have gaps between the profiles, while the edge of the reed upwards may also be completely open. In this case, the slats are not covered by an additional profile from above. The individual profiles or plates may have extensions in order to selectively guide the adhesive in a possible bonding process or to prevent it from escaping. One possible embodiment is that in the upper edge region in the direction of the warp beam the profile engages less far from above into the middle region of the slats. However, any other configuration is conceivable in which the front or rear edge extends more or less far into the middle region at the top or bottom of the reed. With such a measure, the total height of the reed can preferably be reduced by adjusting the extent of the edge region to the respective shed geometry and to the movement of the reed with respect to the shed geometry. The edge area here is the area of the reed in the height direction in which the warp threads can not pass unhindered. For this purpose, the edge of the reed or - in leaves of the prior art - the coil springs or the wire for wrapping be the cause. The reducible total height of the reed according to the invention leads to a better stability of the reed during operation in the weaving machine, especially at high levels Speeds. The total height is measured in height direction H and is the maximum extent of the reed in this direction.

By using a plurality of plate-like objects to form profiles for the edge area, advantages can result, inter alia, in the bonding. When attaching individual plates of possibly previously applied adhesive can be better pressed until the complete filling of the space provided for the adhesive, as is the case with a U-shaped profile. In addition, it is thus possible for different plates to use different materials or thicknesses. The edges can thus be specifically selected, for example, adjusted in their rigidity, but also other material properties can be selected specifically. A spatial direction in the present context is a direction of the room. Often it is advantageous if these spatial directions are perpendicular to each other.

Fig. 1:

Figur 1 zeigt schematisch ein Webblatt des Standes der Technik im Schnitt mit Blickrichtung auf eine Stirnfläche einer Lamelle.

Fig. 2:

Figur 2 zeigt schematisch ein erfindungsgemäßes Webblatt im Schnitt mit Blickrichtung auf eine Stirnfläche einer Lamelle.

Fig. 3:

Figur 3 zeigt schematisch ein weiteres erfindungsgemäßes Webblatt im Schnitt mit Blickrichtung auf eine Stirnfläche einer Lamelle.

Fig. 4:

Figur 4 zeigt schematisch einen Ausschnitt eines erfindungsgemäßen Lamellenstapels für ein Webblatt im Schnitt mit Blickrichtung in Kettfadenrichtung.

Fig. 5:

Figur 5 zeigt schematisch eine erfindungsgemäße Vorrichtung.

Fig. 6:

Figur 6 zeigt schematisch ein Webblatt.

Fig. 7

Figur 7 zeigt ein ähnliches Webblatt wie Figur 6

In the following, the present invention will be explained in more detail by exemplary embodiments with reference to FIGS. The presented features of the individual embodiments can be transferred in the rule in an advantageous manner to the invention in its most general form.

Fig. 1:

FIG. 1 schematically shows a reed of the prior art in section with a view towards an end face of a blade.

Fig. 2:

FIG. 2 schematically shows a reed according to the invention in section with a view towards an end face of a lamella.

3:

FIG. 3 schematically shows another inventive reed in section with a view towards an end face of a lamella.

4:

FIG. 4 schematically shows a section of a lamella stack according to the invention for a reed in section with view in warp direction.

Fig. 5:

FIG. 5 schematically shows a device according to the invention.

Fig. 6:

FIG. 6 schematically shows a reed.

Fig. 7

FIG. 7 shows a similar reed as FIG. 6

FIG. 1 schematically shows a reed 6 of the prior art in section with a view of an end face 8 of a lamella 1. This viewing direction corresponds to the width direction B of the reed 9. The lamella 1 is bordered at the top and bottom by a respective edge 2 of the reed 9, which as U-shaped profile is executed. The adhesive, the lamella 1 and edge 2 of the reed 9 connects, is not shown. This adhesive is located in the space also not shown between u-profile and lamella 1 and partially between the end faces 8 of the adjacent lamellae 1. Furthermore, following the edge 2 of the reed 9, the half-round rods 3 and the wound around these 3 wires 4th shown. In addition, three coil springs 5 are shown at the connection to the half-round rods. The coil springs 5 and the half-round rods 3 are covered with a flush to the edge 2 of the reed 9 Abdeckklebung 6. Many different embodiments are known in the art, for example as regards the number of coil springs 5. In addition, these 5 are also partially found in the edge 2 of the reed 9 within the u-profile. However, two features which are not conducive to quality can be recognized for all possible variants according to the state of the art: On the one hand, the wire 4, with which the lamellae 1 and the half-round rods 3 are wrapped, blocks adhesive which is in the edge 2 of the reed 9 was introduced, in this 2 and the slats 1 are not glued between the wires 4 and the coil springs 5. Secondly, the lamellae 1 are clamped by the wire 4 between the half-round rods 3, which leads to unavoidable variations in the width of the lamellae 1 that individual lamellae 1 are either not properly fixed (with less wide lamella 1) or bent (at wider slat 1).

FIG. 2 schematically shows a reed according to the invention in section with a view of an end face 8 of a lamella 1. In this first embodiment as well as in all subsequent embodiments of the invention is first seen that no half-round rods 3, wires 4 or coil springs 5 and thus no Abdeckklebung 6 needed become. It can be seen immediately that the gap between the edges 2 of the reed 9 at the same total height G in height direction H, is greater. This can advantageously be used in such a way that the weaving reed 9 according to the invention can be designed with a smaller overall height G, which is the case in the Web operation inertial forces can increase the life and reduce the load on the loom.

To simplify the illustration is in FIG. 2 no clearance between the edge 2 of the reed 9 and the blade 1 shown. Also, the adhesive with which the edge 2 of the reed 9 is glued to the slats 1, has been omitted for simplicity of illustration. Within the upper edge 2 of the reed 9 twelve circles are shown, which are referred to as a glue point 10 or as a distance point 11. The number of circles, their arrangement and their name as a glue point 10 or as a point 11 are chosen arbitrarily and can be adapted to the requirements of the respective reed 9 arbitrarily. In particular, only adhesive dots 10 can be used. Furthermore, the different adhesive dots 10 or 11 distance points may also have different material, if it is advantageous for the specific application. The same applies to the area within the lower edge 2 of the reed 9 of FIG. 2 , By way of example, an adhesive, spacer bead 13 in an elongated form and an adhesive, spacer bead 14 in a closed form are shown here.

In the middle area in relation to the height direction H of the FIG. 2 , So in the area between the two edges 2 of the reed 9, nine circles are shown, which are referred to as a distance point in the intermediate space 12. Again, the arrangement in three rows, each with three points is arbitrary. Any other arrangement would be possible for all embodiments. Also, it is not excluded that these points, although they are referred to as "distance points", also have an adhesive effect. It is important in this central region in which the warp threads are guided between the slats 1 in the loom, that the points for the completion of the reed 9 can be removed as far as possible without residue.

FIG. 3 schematically shows a further embodiment of a reed 9 according to the invention in section with a view towards an end face 8 of a lamella 1. A difference to FIG. 2 is the representation of the adhesive 10, and distance points 11 within the lower edge 2 of the reed 9. The adhesive, Abstandsfläche 15 shows another possibility, the corresponding substances applied. The stretched adhesive, spacer bead 13 is obliquely introduced at an angle to the side edges of the blade 1. Such a special arrangement can serve to prevent the adhesive applied inside the edge 2 of the reed 9 for its later attachment from penetrating into the area between the edges 2 of the reed 9. Here he would have to be removed later, so he does not prevent the warp threads on the passage. It is also conceivable to carry out a stretched adhesive, spacer bead 13 not only straight but also arcuate.

FIG. 3 also shows various ways to perform multi-part edges 20 of the reed 9. The multi-part edges (20) of the reed (9) are designed here asymmetrically. The profiles on the warp thread entry side 41 and the warp thread exit side 42 have a different extension in the height direction H. In particular, a survey 24 can be made on a first edge profile 21. This 24 can take over the function of a sealing lip to prevent adhesive for the attachment of the multi-part edge 20 of the reed 9 to penetrate into the central region of the reed in which the warp threads are guided. The warp direction K is indicated for clarity. The entry side of the warp threads is denoted by 41 and the exit side by 42. It is also an embodiment of the multi-part edge 20 of the reed conceivable in which a profile occupying the position of the illustrated profile 22 is omitted.

FIG. 4 schematically shows a section of a lamella stack 7 for a reed in section with view in warp direction K. Again, simplifications were made: All adhesive, and distance points are shown with a rectangular cross-section. Depending on the sequence of the method or on a wide variety of parameters, the adhesive points and / or distance points in the illustrated sectional view may also have a concave or convex side line. The slats 1 are shown cut off at the right edge. In addition, the ratio of the distance of the distance points in the gap 12 to the distance points 11 in relation to the pitch shown T may be incorrect or at least not the size ratios of FIGS. 2 and 3 correspond. Shown are therefore sections of four slats 1. The slat stack 7 is prepared so that a fifth slat 1 can be added from above.
At this point, it should be mentioned that a reed 9, which may have a length of 0.5 m or less and up to 4 m or more and, accordingly, a large number of lamellae 1. With regard to the length of the reed to be produced 9 no limits are set up or down by the inventive method.
As already mentioned, the illustrated lamination stack 7 is prepared for adding a fifth lamination from above. For this purpose, distance points 11, an adhesive point 16 which is excessive in this example and a spacing point in the intermediate space 12 are already applied to the uppermost lamella. All these points can be applied to the next slat to be added as mentioned earlier. It is not excluded, for example, for reasons of process efficiency also apply a job on the lamella stack 7 and the next slat 1 to be added.

Two further advantageous embodiments are in FIG. 4 shown: Between the bottom and the bottom second lamella 1, an adhesive, spacing stack 17 is shown. Adhesive and spacer points can not only be arranged next to each other (for the formation of beads and surfaces), but also on each other. Likewise, a lower distance point 18 is shown. In particular, when using several different viscous substances and the predetermined amount can be chosen differently, so that also excessive 16 and low 18 points can be used.

FIG. 5 schematically shows an example of a device 30 according to the invention of a slat reel 31, the slat band 32 a handling device, in this example a suction pad 35 is supplied. A cutting device 33 separates the lamellar band 32 from a lamella 1, which is then held by the suction pad 35. The suction pad 35 is shown in a schematic sectional view, in which the corresponding vacuum cavity 36 of the suction pad 35 can be seen. The suction gripper 35 presents an end face 8 of the blade 1 of the metering device 34. The metering device 34 applies predetermined amounts of one or more viscous substances to the presented end face 8. Demenstsprechend already points 10-18 can be seen on the end face 8 of the lamella 1, an adhesive or spacing point 19 is still in flight between Dosing device 30 and lamella 1. The suction gripper then transports the lamella 1 along a direction 37 to a lamella stack 7. By a further movement along a direction 38, the lamella 1 is added to the lamella stack 7. On the fin stack, the pitch T of the reed and the various types of gluing and spacing points 10-18 are shown.

FIG. 6 shows a reed according to the invention 9 schematically. The total height G in the height direction H, the width direction B of the reed and the warp direction K are shown for clarity. Likewise, the edge regions 25 of the reed 9 are designated. The edge regions 25 of the reed 9 are those regions of the reed 9 in the height direction H, in which no passage for the warp threads through the reed 9 is possible. In the weaving reed 9 according to the invention, the edge region begins with the edges of the reed 2, 20. In reeds of the prior art, the edge region 25 of the reed 9 starts with the helical springs 5 or the wires 4 with which the lamellae 1 are wrapped.

FIG. 7 shows a similar reed 9 as FIG. 6 schematically. The upper edge 2 of the reed 9 was omitted here. Thus, the originally viscous (first and other) body 39 can be seen, which are otherwise covered by the edge 2 of the reed 9. In the in FIG. 7 illustrated embodiment, these originally viscous body have the same volume. LIST OF REFERENCE NUMBERS 1 lamella 2 Edge of the reed, U-profile 3 Half round bar 4 wire 5 spiral spring 6 Abdeckklebung 7 laminate stack 8th Face of a lamella 9 reed 10 Glue point / specified quantity 11 Distance point / specified quantity 12 Distance point in the gap / specified quantity 13 Adhesive, spacer bead stretched / specified quantity 14 Adhesive, distance caterpillar closed / specified quantity 15 Adhesive, distance surface / specified quantity 16 Glue point, bead, surface area increased / specified quantity 17 Adhesive, distance stack / specified quantity 18 Distance point low / specified amount 19 Adhesive, distance point in flight 20 Edge of the reed in several parts 21 First edge profile 22 Second edge profile 23 Third edge profile 24 survey 25 Edge area of the reed 30 device 31 Fins Reel 32 segment belt 33 Cutting device 34 metering 35 Suction pads 36 Vacuum cavity of the suction pad 37 First direction of movement of the gripper 38 Second direction of movement of the gripper 39 Originally viscous (first and further) body 41 Entry side of the warp threads 42 Exit side of the warp threads A Distance between the slats B Width direction of the reed 9, direction perpendicular to the end face. 8 e End areas of the lamella G Total height of the reed 9 H height direction K warp T division

Claims (15)

1. Method for producing weaving reeds (9) in which method strip-shaped or tape-shaped objects (1) for forming the dents (1) of the weaving reed (9) are joined at a specific spacing (A) in the width direction (B) of the weaving reed (9), characterized in that

   - at least one of the strip-shaped or tape-shaped objects (1) on that end face (8) thereof that faces the width direction (B) of the weaving reed (9), in particular in the end regions (E) of said end face (8), is provided with an application of a pre-defined quantity (10 - 18) of at least one viscous substance, in order for the specific spacing to be exactly set; and

   - then is joined to the next strip-shaped or tape-shaped object.
2. Method according to Claim 1,
   characterized in that
   the application of the pre-defined quantity (10 - 18) is performed in a drop-shaped manner (10, 11, 12), a layered manner (15), a punctiform manner (10, 11, 12), or in the form of a bead (13, 14).
3. Method according to one of the preceding claims, characterized in that

   - at least one of the strip-shaped or tape-shaped objects (1) is cut to length; and

   - is provided at at least one of the end faces (8) of said strip-shaped or tape-shaped object (1) with the application of the pre-defined quantity (10 - 18) of a viscous substance; and

   - is then brought together with one further strip or tape-shaped object (1).
4. Method according to one of the preceding claims, characterized in that
   a permanent connection (10) between at least two strip-shaped or tape-shaped objects (1) is produced by way of the pre-defined quantity (10 - 18) of at least one viscous substance.
5. Method according to one of the preceding claims, characterized in that
   the spacing (A) between at least two strip-shaped or tape-shaped objects (1) is permanently set by way of the pre-defined quantity (10 - 18) of at least one viscous substance.
6. Method according to the preceding claim, characterized in that
   the setting of the spacing (A) between at least two strip-shaped or tape-shaped objects (1) is already performed between the two strip-shaped or tape-shaped objects (1) when the latter are first brought together.
7. Method according to the preceding claim, characterized in that
   at least one adhesive is used, the curing of said adhesive being capable of being influenced by an energy input.
8. Method according to one of the preceding claims, characterized in that
   at least one first and one second viscous substance are used, wherein said two substances have dissimilar curing behaviours.
9. Method according to one of the preceding claims, characterized in that
   at least one viscous substance is at least partially cured before the two strip-shaped or tape-shaped objects (1) are first brought together.
10. Method according to one of the preceding claims, characterized in that
    the spacings between the at least two strip-shaped or tape-shaped objects (1) are measured after said at least two strip-shaped or tape-shaped objects (1) have been brought together, and the pre-defined application quantities (10 - 18) and/or of the compression force of said bringing together are/is controlled in a closed-loop or an open-loop manner, respectively, according to said measured value.
11. Device for joining dents for the production of weaving reeds,
    having a metering device (34) by way of which a pre-defined quantity (10 - 18) of a viscous substance is capable of being applied to end faces (8) of the dents (1),
    characterized by
    at least one handling device for transporting the coated dent from a coating position to a position in which said dent, by way of the coated end face thereof, comes to bear on a previously placed dent.
12. Weaving reed which comprises a number of strip-shaped or tape-shaped objects (1) which assume the function of dents (8) and in the width direction (B) of the weaving reed (9) are successively lined up at a pre-defined spacing (A), wherein a quantity of a cured, originally viscous, casting compound is present in the end regions of the dents, characterized by
    at least one first member (39) of a pre-defined cured quantity of a further, originally viscous, portionable substance, that is to say a substance that was viscous at the point in time of the application of said substance to the dents, which is located between the end faces (8) of two of the strip-shaped or tape-shaped objects (1) in the end regions of the latter, and which bears on the end faces (8) of the two strip-shaped or tape-shaped objects (1).
13. Weaving reed according to the preceding claim, characterized by
    at least one further member (39) which is likewise composed of a pre-defined cured quantity of an originally viscous substance and which has the same volume as the first member.
14. Weaving reed according to one of the preceding claims,
    characterized by
    at least one peripheral region (25) in which the dents (1) are connected to one another,
    wherein said at least one peripheral region (25) in which dents (1) are connected to one another, in the direction towards the regions of the weaving reed (9) that are central in terms of the height direction (H), terminates earlier on one of the two sides of the weaving reed than on the respective other side of the weaving reed.
15. Weaving reed according to one of the preceding claims,
    characterized by

    - at least one peripheral region (25),

    - which in at least two spatial directions is framed by plate-like objects (21, 22, 23),

    - wherein the at least one plate-like object (21, 22, 23) which effects the framing in the first spatial direction is not embodied so as to be integral to the at least one plate-like object (21, 22, 23) which effects the framing in the second spatial direction.

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