EP3425095B1 - Reed and method for its production - Google Patents

Description

The invention relates to a reed and a method for producing a reed. A reed has a plurality of lamellae arranged parallel to one another. Two immediately adjacent lamellae delimit an intermediate space through which a warp thread is passed. The lamellae are used to keep the warp threads at a defined distance from one another. In order to be able to produce a uniform fabric, it is necessary that all immediately adjacent lamellae have the same distance from one another.

In order to set the distance between the slats of a reed during assembly, it is off FR 1 146 831 A known to bend the lamella several times in its two end sections, so that a serrated lamella section is created. The serrated sections of adjacent lamellae are offset from one another in a longitudinal direction in which the lamella extends. The adjacent lamella rests against the prongs of one lamella, so that the distance or the width of the space between two lamellae is defined.

Such formed lamellae of a reed are also in U.S. 2,152,430 A disclosed. In addition, a further embodiment of the lamellae is shown there, in which an end section is bent through 180 ° and the bent part is formed into a projection on which the respectively adjacent lamella rests.

U.S. 2,147,258 A describes the slats of a reed, which are provided with two parallel slots in at least one end section in their direction of extension, so that three webs are thereby formed. The middle web is deformed in one direction and the two outer webs in the other direction protruding from the lamella plane. As a result, spacer projections are formed on which directly adjacent lamellae touch. Such slats are also made DE 2 508 575 A known.

EP 0 943 712 A1 and U.S. 4,529,014 A describe a reed in which the end sections of the lamellae are made thicker than the central working section of the lamellae and bear against one another. As a result, a defined distance between the working sections of the lamellae is achieved. In U.S. 4,529,014 A it is also proposed to glue the slats together.

From DE 1 535 830 A known slats of a reed are provided with an opening through which a line-up rail runs. Adjacent to this opening, the slats are bent over by 180 °. The thickness of the bent areas determines the distance between two lamellas that are directly adjacent to one another.

GB 1 245 872 A discloses an embodiment of a reed with the aim of increasing the distance between two parallel planes touching a slat on opposite sides without having to increase the thickness of the slat. This is to be achieved in that the lamella is curved or angled in its cross-sectional profile. One level lies on a central area on the convex side, while the other level on the concave side on the two outer areas of the Cross section of the lamella is applied. The greater the bend or curvature of the cross-sectional profile, the greater the distance between these two planes.

U.S. 4,694,867 A D1 describes a reed with lamellae according to the preamble of claim 1. The lamellae are provided with spacer knobs at one end section, which take up a considerable proportion of the area compared to the total area of the lamellae.

Starting from the prior art, it can be seen as the object of the present invention to create a reed which ensures a constant distance between adjacent warp threads.

This object is achieved by a reed with the features of claim 1 and a method for producing the reed with the features of claim 14.

The reed according to the invention has a plurality of lamellae which extend in a longitudinal direction between a first end and an opposite second end. Each lamella has an end section immediately following the first end and the second end. The two end sections delimit a working section which extends between the end sections. The working section of the reed serves to guide the warp threads, while the end sections are designed to fasten the lamellae to one another or to a carrier of the reed. The working section of each lamella has two opposite lamella outer surfaces. Each lamellar outer surface extends in a plane that passes through the Longitudinal direction and a transverse direction aligned at right angles to the longitudinal direction is spanned. The warp threads run through the reed between two lamellar outer surfaces of second immediately adjacent lamellas. Depending on the position of the heald frames, a warp thread can extend in the transverse direction or at an angle to the transverse direction.

Each lamella thus has a first lamella outer surface which extends in a first plane and a second lamella outer surface which extends in a second plane. The two planes are aligned parallel to each other and define the thickness of the lamella in the working section. The lamellar outer surfaces are preferably rectangular and extend in the longitudinal direction between the two end sections and in the transverse direction between a front edge and a rear edge of the lamella.

Several spacer knobs are present in at least one end section of several and preferably all of the lamellae. The spacer knobs are produced in particular by an embossing process. It is preferred if the lamella has spacer knobs in both end sections. The spacer knobs are recessed on a first side opposite the first level and raised on the opposite second side opposite the second level. Each spacer knob thus forms a recess on the first side opposite the first level and on the second side a projection compared to the second level. The spacer knobs are distributed in an end section and are preferably arranged at a distance from one another. The spacer knobs are preferably arranged in an end section according to a regular pattern.

On the first side, the spacer knobs have an inner knob surface, which adjoins the first level and forms a concave recess opposite the first level. On the second side, the spacer knobs have an outer knobs surface that adjoins the second level and forms a convex projection compared to the second level. The sum of all knob outer surfaces of all spacer knobs which are arranged in a common end section is a maximum of 15%, preferably a maximum of 10% and more preferably a maximum of 8% of the total end section surface in this end section. The total end section area is defined by the sum of an area portion of the end section that extends in the second plane plus the sum of all knob outer surfaces. Thus, the surface section of the end section surface that extends in the second plane is at least 85%, preferably at least 90% and more preferably at least 92% of the total end section surface.

The spacer knobs are set up to define a minimum distance between two adjacent slats in the reed. If a lamella rests against the spacer knobs of the adjacent lamella, the minimum distance between the working sections of the lamella corresponds to the height of the spacer knobs on the second side opposite the second level. If the lamellas are glued to one another during the manufacture of the reed, adhesive is introduced between the adjacent end sections of the lamellas. Capillary forces can cause deformations of the end sections or the lamella. Since not all the spaces between the end sections are filled with adhesive at the same time, the capillary forces can cause them to move Set irregular distances between the slats or the slats may be deformed. Such deformations of the slats are limited by the spacer knobs. In addition, the spacer knobs provide a minimum distance between two slats. Because the spacer knobs have a sufficiently small proportion of the total knob outer surface compared to the total end section surface, the capillary effect is not additionally reinforced. It has been shown that by means of spacer knobs, the area proportion of which is sufficiently small within the respective end section, an improved uniformity of the lamellar spacing can be achieved compared to the previous solutions. The spacer knobs can be produced easily and efficiently by an embossing process during the manufacture of the reed.

It is advantageous if the proportion of the total burl inner surface of all spacer knobs in a common end section on their first side is a maximum of 15%, preferably a maximum of 10% and more preferably a maximum of 8% of the total end section surface on this side. The total end section area on the first side corresponds to the sum of the area section of the end section that extends in the first plane, as well as the sum of all knob inner surfaces of the existing spacer knobs.

The spacer knobs are preferably free of openings. They are generated, for example, by a forming process. A separation process such as cutting or punching is not provided. It is also preferred if the end sections are designed entirely without openings.

In a width direction, at right angles to the first plane and the second plane, in which the lamellae are lined up next to one another, the reed has two edge-side lamellae and a plurality of middle lamellae, which are arranged between the edge-side lamellae. It is preferred if at least all of the central lamellae have spacer knobs in one or both end sections. At least one of the two edge-side lamellae preferably also has spacer knobs in at least one end section. In one embodiment, it is provided that all of the lamellae have a plurality of spacer knobs in one or both end sections. In this design, all slats can be made identical.

In a preferred embodiment, at least three, preferably at least five to ten spacer knobs are present in an end section.

In a preferred embodiment, each spacer knob has a central knob part. The central knob part is preferably designed to be rotationally symmetrical and can, for example, have a cylindrical or frustoconical or spherical cap shape. In addition, each spacer knob can have an outer knob part which completely encloses the central knob part. In one embodiment, the outer knob part can be designed conically. The cone angle with respect to the first or second plane is acute and is a maximum of 10 ° or a maximum of 5 ° or a maximum of 3 °.

The spacer knobs arranged directly next to one another end sections of the lamellas can in one embodiment are aligned with one another, ie all the spacer knobs of adjacent end sections are arranged along a plurality of straight lines which extend at right angles to the first or second plane. As an alternative to this, the spacer knobs of each directly adjacent end sections can also be arranged offset parallel to the first plane or the second plane, so that they are not aligned.

Starting from the second level, the spacer knobs preferably have a height or maximum height which is essentially the same as the distance between the first level and the second level, that is to say the same as the thickness or the strength of the lamella. The height can be, for example, from 0.8 times to 1.2 times the thickness of the lamella.

In one embodiment, the spacer knobs have a diameter that is 5-10 times as large as the height.

It is preferred if all the spacer knobs have the same diameter and the same height. It is further preferred if all the spacer knobs have the same shape or external shape.

In the arrangement in the reed, immediately adjacent slats have a slat spacing from one another which corresponds at least to the height of the spacer knobs and is preferably at most 5% or at most 2% greater than the height of the spacer knobs. Immediately adjacent lamellae can thus rest against one another on the spacer knobs or be arranged next to one another without contact.

To produce the reed, the slats are fed one after the other to an assembly station. Before reaching the assembly station, at least one or some and preferably all of the lamellae are embossed in the end sections in order to produce the spacer knobs. It is also possible to stamp the lamellae in a separate stamping station and then to feed them to a separate assembly device. In the assembly device or assembly station, the slats are positioned at a defined distance from one another, the distance corresponding at least to the height of the spacer knobs. The lamellas can be temporarily attached to one another in the desired relative position with the aid of a wire. An adhesive connection is then established between the respective adjacent end sections of the lamellae. For example, the slats can be glued to one another and to a carrier of the reed. The wire for the temporary fixation of the lamellas can be removed after the adhesive bond has hardened.

• Figur 1 eine schematische Darstellung eines Webblattes in einer Ansicht in Kettfadenrichtung,
• Figuren 2 und 3 jeweils eine schematische Darstellung mehrerer Lamellen eines Webblattes in einem Querschnitt,
• Figur 4 eine schematische Ansicht eines erfindungsgemäßen Ausführungsbeispiels einer Lamelle in einer Draufsicht in Kettfadenrichtung,
• Figur 5 ein bevorzugtes Ausführungsbeispiel einer Abstandsnoppe in einem Querschnitt durch einen Endabschnitt der Lamelle aus Figur 4, wobei Abstandsnoppen benachbarter Lamellen fluchtend angeordnet sind,
• Figur 6 eine vergrößerte Darstellung des Bereichs VI in Figur 5,
• Figur 7 das Ausführungsbeispiel der Abstandsnoppen aus Figur 5, wobei die Abstandsnoppen versetzt zueinander angeordnet sind,
• Figur 8 eine schematische Darstellung der Positionierung mehrerer Lamellen eines Webblattes,
• Figuren 9 und 10 jeweils eine schematische Darstellung eines Endabschnitts einer Lamelle mit mehreren Abstandsnoppen in unterschiedlicher Anordnung und
• Figur 11 eine schematische, blockschaltbildähnliche Darstellung eines beispielhaften Verfahrensablaufs zur Herstellung eines erfindungsgemäßen Webblatts.

Advantageous embodiments of the invention emerge from the dependent claims, the description and the drawings. In the following, preferred exemplary embodiments of the invention are explained in detail with reference to the accompanying drawings. Show it:

• Figure 1 a schematic representation of a reed in a view in the warp thread direction,
• Figures 2 and 3 each a schematic representation of several slats of a reed in a cross section,
• Figure 4 a schematic view of an embodiment of a lamella according to the invention in a plan view in the warp thread direction,
• Figure 5 a preferred embodiment of a spacer knob in a cross section through an end portion of the lamella Figure 4 , with spacer knobs of adjacent slats being arranged in alignment,
• Figure 6 an enlarged view of the area VI in Figure 5 ,
• Figure 7 the embodiment of the spacer knobs Figure 5 , whereby the spacer knobs are arranged offset to one another,
• Figure 8 a schematic representation of the positioning of several slats of a reed,
• Figures 9 and 10 each a schematic representation of an end section of a lamella with several spacer knobs in different arrangements and
• Figure 11 a schematic, block diagram-like representation of an exemplary process sequence for producing a reed according to the invention.

In Figure 1 a reed 15 is illustrated schematically. The reed 15 has a plurality of lamellae 16 aligned parallel to one another and arranged at a distance from one another. Each lamella 16 has a first end 17 and a second end 18 and extends in the longitudinal direction L between the first end 17 and the second End of 18 ( Figure 4 ). The two ends 17, 18 form end faces or edges of the lamella 16. An end section 19 adjoins the first end 17 and the second end 18. In the longitudinal direction, the two end sections 19 are separated from one another by a working section 20 of the lamella 16 arranged between them. The first end 17 and the second end 18 are connected to one another by two edges extending in the longitudinal direction L, a front edge 21 and a rear edge 22. The front edge 21 and the rear edge 22 are arranged at a distance from one another in a transverse direction Q.

Each of the lamellae 16 has a first lamella outer surface A1 in the working section 20 and a second lamella outer surface A2 on the opposite side in the working section 20 ( Figure 4 ). The first outer lamella surface A1 extends in a first plane E1 and the second outer lamella surface A2 extends in a second plane E2. The two planes E1, E2 are aligned parallel to one another and spanned by the longitudinal direction L and the transverse direction Q.

In a width direction B, the lamellae 16 of the reed 15 are arranged with the formation of defined spaces 25 between the working sections 20 of immediately adjacent lamellae 16. In the width direction B, the spaces 25 have the same size. The intermediate spaces 25 serve to guide warp threads 26 in the width direction B and to predetermine the distance between the warp threads 26 in the width direction B and to keep it constant. Like it in Figure 1 As illustrated, the lamellas 16 are each arranged with their end sections 19 in an associated carrier 27 of the reed 15. The slats 16 can be connected with their end sections 19 by an adhesive connection to the carriers 27 of the reed 15. The end sections 19 of the lamellae 16 arranged next to one another in the width direction B are also connected to one another by the adhesive connection. The adhesive connection between the end sections 19 of the lamellas 16 and the respective carrier 27 is highly schematized in FIG Figure 11 shown. An adhesive 28 is in Figure 11 illustrated dotted. It can be seen that the adhesive 28 flows into the gaps between two immediately adjacent end sections 19 of the lamellae 16.

In Figure 2 a desired, ideal alignment of the lamellae 16 is schematically illustrated. All of the lamellae 16 are aligned parallel to one another, each with the same distance. In practice, the production of the adhesive connection between the end sections 19 of the lamellae 16 can lead to individual end sections 19 or individual lamellae 16 being deformed. This is due to the fact that the adhesive flows unevenly and not at the same time through the respective gaps between the adjacent end sections 19. Capillary forces arise which can deform the very thin lamellae 16 of the reed 15. Such an undesirable deformation is exemplified in Figure 3 illustrated.

In order to counteract this, some or preferably all of the lamellae 16 have a plurality of spacer knobs 30 in one and, for example, in both end sections 19 in each case. According to the example, at least three and preferably five to ten spacer knobs 30 are present in an end section 19. The working section 20 is free of spacer knobs 30 and other depressions or elevations on the lamella 16. The end section 19 adjacent to the first end 17 ends at the point at which a spacer knob 30 is located, which is at the greatest possible distance from the first end 17. The end section 19 adjacent to the second end 18 ends at the point at which there is a spacer knob 30 which is at the greatest possible distance from the second end 18. At this point with the greatest possible distance of a spacer knob from the first end 17 or the second end 18, a straight line G is drawn in the transverse direction Q parallel to the respective edge of the first end 17 or the second end 18, which represents the end of the relevant end section 19 ( Figures 9 and 10 ).

In the preferred exemplary embodiment, the spacer knobs 30 are produced by stamping. They are recessed on a first side S1 compared to the first level E1 and raised on the opposite, second side S2 compared to the second level E2. A preferred embodiment of the spacer knobs 30 is shown in Figures 5-7 each shown in cross section.

The second side S2 of the spacer knobs 30 is located on the side of the lamellas 16 on which the second outer lamella surface A2 adjoins in the working section 20. Accordingly, the first side S1 of the spacer knobs 30 is on the side of the lamella 16 on which the working section 20 has its first lamella outer surface A1 ( Figure 4 ). On the first side S1, each spacer knob has an inner knob surface I which adjoins the first plane E1 and delimits the concave, recessed area of the spacer knob 30. On the opposite, second side S2, each spacer knob 30 has a knob outer surface F, which adjoins the second plane E2 and the convex, projecting or raised part of the spacer knob 30 limited. The inner knob surface I and the outer knob surface F are in Figure 5 illustrated.

The number and size of the spacer knobs 30 in a single end section 19 is selected such that the sum of all knob outer surfaces F compared to the total end section surface of this end section 19 on the second side S2 is a maximum of 15% or a maximum of 10% or a maximum of 8%. The total end section area on the second side S2 is the area that is formed by the area section of the end section that extends in the second plane E2 plus the sum of the knob outer surfaces F. Additionally or alternatively, the proportion of the sum of all knob inner surfaces I is in a common End section 19 at most 15% or at most 10% or at most 8% of the total end section area on the first side S1. The total end section area on the first side S1 is the area of the end section 19, which results from the sum of all knob inner surfaces I of all spacer knobs 30 in this end section 19 plus the surface section of the end section 19 which extends in the first plane E1.

In the exemplary embodiment preferred here, all of the spacer knobs 30 of a common end section 19 or of a lamella 16 and preferably all of the lamellae 16 are of identical design. This simplifies the production of the spacer knobs 30 or the lamellae 16.

Like it in the Figures 5-7 It can be seen that each spacer knob 30 in the preferred embodiment described here, each spacer knob 30 has one central knob part 31, which is enclosed by an outer knob part 32. The central knob part 31 is preferably designed to be rotationally symmetrical to an axis which extends in the width direction B and thus at right angles to the planes E1, E2. The central knob part 31 can be cylindrical or frustoconical or spherical.

In the exemplary embodiment illustrated here, the central knob part 31 has a central wall section 33 extending essentially parallel to the second plane E2. This central wall section 33 can also be designed with a convex curve when viewed from the second side S2 onto the spacer knob 30. The central wall section 33 is, for example, circular and connected to the outer knob part 32 by a connecting wall section 34. The connecting wall section 34 has a conical shape and forms a hollow truncated cone. The connecting wall section 34 expands the diameter of the central knob part 31 from the central wall section 33 to the outer knob part 32. If the central wall section 33 has the shape of a spherical cap or some other convexly curved shape, the connecting wall section 34 can also be omitted.

The outer knob part 32 is optional and can be omitted in an exemplary embodiment that is not illustrated. In the preferred embodiment, it serves to give the spacer knobs 30 a resilient effect. The outer knob part 32 has a conical shape and forms a hollow truncated cone. A cone angle α of the outer knob part 32 measured between the first plane E1 and the knob inner surface I is very small and has in the embodiment an amount of less than 5 ° or less than 3 °. In contrast, a cone angle of the connecting wall section 34 is larger and is preferably at least 30 ° or at least 40 °.

Like it in Figure 5 As illustrated, the spacer knobs 30 of adjacent end sections 19 of the lamellae 16 can be arranged in alignment with one another in the width direction B. The spacer knobs 30 are produced, for example, by a forming process and preferably an embossing process. Due to the deformation and the material flow caused, the dimension of a spacer knob 30 on the second side S2 is larger than on the first side S1. As a result, even if the spacer knobs 30 are in an aligned arrangement, it is prevented that adjacent lamellae 16 come into contact with one another without any spacing. As an alternative to the schematic representations of the Figures 5 and 6 The spacer knobs 30 of directly adjacent end sections 19 of second lamellas 16 can also be arranged offset to one another parallel to the planes E1, E2 ( Figure 7 ). Otherwise, the design of the spacer knobs 30 corresponds to FIG Figure 7 execution in the Figures 5 and 6 .

Starting from the second level E2, the spacer knob 30 has a height H which represents the point with the greatest distance from the second level E2. In the exemplary embodiment described here, the height H is defined by the part of the knob outer surface F that is located on the central wall section 33. This height H of the spacer knob 30 defines the minimum distance that two immediately adjacent lamellae have in the area of their working sections 20. The height H preferably corresponds essentially to the thickness or strength S of the lamella 16. Die Thickness S of the lamella 16 is defined by the distance between the first plane E1 and the second plane E2. In the exemplary embodiment described here, the diameter D of the spacer knob 30 is approximately 8 to 12 times and preferably 10 times the height H. If the outer knob part 32 is omitted in an exemplary embodiment that is not illustrated, the diameter D of the spacer knob 30 is approximately that 4 to 6 times and preferably 5 times the height H.

As explained above, all of the lamellae 16 can have spacer knobs 30 in each of the two end sections 19. In order to ensure a minimum distance between the lamellae 16, the provision of spacer knobs 30 on all the lamellae 16 is not absolutely necessary. Like it in Figure 1 As illustrated, the reed 15, viewed in the width direction B, has two edge-side lamellae 16r and central lamellae 16m arranged between them. At least one of the edge-side lamellae 16r does not require any spacer knobs, since a central lamella 16m is only present on one side of the edge-side lamella 16r. If this adjacent central lamella 16m has spacer knobs towards the edge-side lamella 16r, this edge-side lamella 16r can be designed without spacer knobs. If the spacer knobs 30 of the lamellae 16 are aligned in the width direction B, all lamellas 16 preferably have spacer knobs. In order to standardize the production of the lamellae 16 and to ensure that each lamella 16 can be used at any point in the reed 15, all lamellae 16 are preferably provided with spacer knobs 30 in at least one or both end sections 19.

The number and position of the spacer knobs 30 in an end section 19 can vary. The Figures 9 and 10 illustrates two possible arrangements. The in Figure 10 The embodiment shown, the spacer knobs 30 are arranged in the end sections 19 in the form of a matrix in rows and columns with uniform intervals. The in Figure 9 In the illustrated embodiment, the rows immediately adjacent in the longitudinal direction L are offset in the transverse direction Q. The possible arrangements for the spacer knobs in the end sections 19 are varied. Irregular arrangement variants are also possible. It is essential that the area proportion of the spacer knobs according to the invention is adhered to in relation to the entire end section area in order to keep the capillary forces low when creating an adhesive connection and still ensure a minimum distance between immediately adjacent lamellae 16 to create the gap 25.

In Figure 11 Process steps for the production of the reed 15 are schematically illustrated. First of all, lamellae 16 are provided as band-shaped or strip-shaped foil or sheet metal parts. These lamellae 16 are embossed in an embossing station 40 in order to produce the spacer knobs 30 in the end sections. For this purpose, the embossing station 40 has one or more embossing dies 41 which work together with a die 42 in order to produce the spacer knobs 30.

The embossed lamellae 16 are then positioned and aligned relative to one another in an assembly station 43. A lamella spacing is thereby established between immediately adjacent lamellae 16 or their working sections 20 x is set, which is preferably slightly greater than the height H of the spacer knobs. For example, the height H of a spacer knob can be approximately 0.015 mm to 0.025 mm and the lamella spacing x can be a maximum of 10% or a maximum of 5% greater than the height H of the spacer knobs. If the spacer knobs are not aligned ( Figure 7 ) the minimum distance or the smallest lamellar distance x corresponds to the height H of the spacer knobs 30. In the aligned alignment, when the spacer knobs 30 have an outer knob part 32, the central knob part 31 on its second side S2 can partially on the first side S1 of the adjacent Distance nubs 30 engage in the recess there. The minimum distance or smallest lamella spacing x between two adjacent lamellas 16 can therefore be smaller than the height H of the spacer knob 30 (see FIG Figures 5 and 6 ). In all cases, however, the spacer knobs 30 ensure a minimum distance between immediately adjacent slats 16.

In the assembly station 43, the positioned and aligned lamellae 16 can be temporarily attached to one another by a preferably flexible or bendable fixing means, such as a wire 44. In this provisionally fixed state, an adhesive connection is then produced between the end sections 19 of the lamellae 16 which are arranged adjacent to one another in the width direction B and are assigned to a common carrier 27. In this case, adhesive 28 flows into the gap between the adjacent end sections 19 and thereby produces an adhesive connection. The small spacer knobs 30 in terms of area ensure that, on the one hand, a minimum distance between the lamellae 16 is guaranteed and, on the other hand, the capillary forces be kept sufficiently small. During the production of the adhesive connection between the lamellae 16, an adhesive connection with the relevant supports 27 is also produced.

The embossing station 40 and the assembly station 43 can be part of a common device or machine. The manufacturing process can be automated. The lamellar spacing x in the assembly station 43 is preferably set by a highly precise machine axis.

The invention relates to a reed 15 and a method for its production. The reed 15 has a plurality of lamellas 16 which are arranged in a width direction B with the formation of intermediate spaces 25 each with a lamella spacing x. Each lamella 16 has two opposite end sections 19, at which it is connected to a respective carrier 27 and to the immediately adjacent lamella (s) 16 by an adhesive connection. In at least one or both end sections 19, the lamella 16 has several spacer knobs 30, which are preferably produced by stamping. The spacer knobs 30 form a recess on the one, first side S1 and on the opposite, second side S2 a projection with a knob outer surface F. The sum of all knob outer surfaces F of the spacer knobs 30 of a single end section 19 of a lamella 16 has a maximum proportion of 15% or a maximum of 10% or a maximum of 8% of the total end section area on this second side S2.

List of reference symbols:

15th

Reed

16

Lamella

16m

middle slat

16r

Edge-side lamella

17th

first end

18th

second end

19th

End section

20th

Work section

21st

Leading edge

22nd

Trailing edge

25th

Spaces

26th

Warp thread

27

carrier

28

adhesive

30th

Spacer knobs

31

central knobbed part

32

outer knob part

33

central wall section

34

Connecting wall section

40

Embossing station

41

Embossing stamp

42

die

43

Assembly station

44

wire

α

Conical angle of the outer knob part

A1

first lamella outer surface

A2

second outer surface of the lamella

B.

Width direction

D.

Diameter of the spacer knob

E1

first floor

E2

second level

F.

Knob outer surface

G

Straight

H

Height of the spacer knob

I.

Pimple inner surface

L.

Longitudinal direction

Q

Transverse direction

S.

Thickness of the spacer knob

S1

first page

S2

second page

x

Lamella spacing

Claims (14)

1. Reed (15),
   with several slats (16) which extend in a longitudinal direction (L) between a first end (17) and an opposite second end (18),
   wherein each slat (16) has a respective end portion (19) directly adjoining the first end (17) and the second end (18), and a working portion (20) between the end portions (19),
   wherein each slat (16) has a first slat outer face (A1) extending in a first plane (E1) in the working portion (20) and a second slat outer face (A2) extending in a second plane (E2) in the working portion (20), wherein the two planes (E1, E2) are oriented parallel to each other,
   wherein several spacer studs (30) are present in at least one end portion (19) of at least one slat (16), said studs being recessed relative to the first plane (E1) on a first side (S1) and raised relative to the second plane (E2) on a second side (S2), characterised in that the proportion of the sum of stud outer faces (F) of all spacer studs (30) on their second side amounts to maximum 15% of the total end portion surface area of the common end portion (19) on this side, and that a bonded connection is created between the adjacent edge portions (19) of the slats (16).
2. Reed according to claim 1, characterised in that the proportion of the sum of the stud inner faces (I) of all spacer studs (30) on their first side (S1) amounts to maximum 15% of the total end portion surface area on this side.
3. Reed according to claim 1 or 2, characterised in that the spacer studs (30) have no breakthrough openings.
4. Reed according to any of the preceding claims, characterised in that the end portions (19) have no breakthrough openings.
5. Reed according to any of the preceding claims, characterised in that it has two edge slats (16r) and several middle slats (16m), wherein at least all middle slats (16m) have spacer studs (30) on one or both end portions (19).
6. Reed according to any of the preceding claims, characterised in that all slats have spacer studs (30) on one or both end portions (19).
7. Reed according to any of the preceding claims, characterised in that each spacer stud (30) has a central stud part (31).
8. Reed according to claim 7, characterised in that each spacer stud (30) has an outer stud part (32) which surrounds the central stud part (31).
9. Reed according to claim 7 or 8, characterised in that the central stud part (31) is conical or cylindrical or dome-shaped, and/or the outer stud part (32) is conical.
10. Reed according to any of the preceding claims, characterised in that the spacer studs (30) of directly adjacent end portions (19) of two slats (16) are arranged aligned with and/or offset from each other.
11. Reed according to any of the preceding claims, characterised in that the spacer studs (30) have a height (H) relative to the second plane (E2) which substantially corresponds to the distance between the first plane (E1) and the second plane (E2).
12. Reed according to any of the preceding claims, characterised in that the spacer studs (30) have a diameter (D) and a height (H) relative to the second plane (E2), wherein the diameter (D) is 5 to 10 times greater than the height (H).
13. Reed according to any of the preceding claims, characterised in that the two end regions (19) of the slats (16) are connected to a respective carrier (27) by a bonded connection, wherein in each case two directly adjacent slats (16) either do not bear against each other or the second side (S2) of the spacer studs (30) of one slat (16) bear on the respective other slat (16).
14. Method for production of a reed (15) according to any of the preceding claims, with the following steps:

    - embossing of at least one of the slats (16) in an embossing station (40) to produce the spacer studs (30) in at least one end portion (19) of the slat (16),

    - positioning of the slats (16) with a defined mutual spacing in a mounting station (43),

    - production of a bonded connection between the adjacent end portions (19) of the slats (16).

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