Clothing wire, clothing carrier and carding machine

Abstract

A wire assembly (1) according to the invention has a base section (2) and a blade section (5). The blade height (6) is greater than the base height (4). The blade section has a plurality of identical tooth bodies (7). A tooth body extends longitudinally between two first recesses (8) of the blade section, which extend vertically as far as possible towards the base section. The tooth bodies are spaced apart longitudinally at a pitch (9). A first tooth tip (10) and at least one second tooth tip (11) are arranged on each tooth body. The first tooth tip adjoins a first recess (8) and points towards this first recess. The wire assembly is characterized in that the first tooth tip (10) and the second tooth tip (11), which is furthest away from the first tooth tip, are arranged on each tooth body at a tooth tip spacing (12) that is less than 50% of the pitch (9).

Description

[0001] The invention relates to a carding wire for a carding tool holder of a carding machine, a carding tool holder, and a carding machine. A carding tool holder is, for example, a roller, a cover bar of a traveling cover, or a stationary cover element. In carding machines such as carders for yarn production or carding machines for nonwoven fabric production, various types of rollers, such as lickers, cylinders, worker rollers, transfer rollers, or take-off rollers, are used, and these are equipped with sometimes quite different carding wires.

[0002] For example, for cylinders of carding, set wires are known from EP3323917A1, CN204738066U, CN208379074U or CN112458575A which have several tooth tips arranged on a common tooth body.

[0003] FR1493015A, WO2016 / 193853A1 and JP08074132A disclose garment wires with multiple tooth tips arranged on a tooth body, pointing in different directions.

[0004] EP3168336A1 and DE4436378A1 reveal second tooth tips that are located far below in the vertical direction in relation to a first tooth tip.

[0005] DE102008027355A1 shows a settling wire for a take-up with a high ppsi. WO00 / 26450, EP2567010B1 and EP2756119A1 show a settling wire with an undercut for better fiber retention in the tooth face.

[0006] WO03087446A2 and DE1927049A1 show garment wires with tooth tips arranged at a uniform distance, but where the tooth depths between successive tooth tips are alternating or of different depths.

[0007] Based on this state of the art, it can be considered an object of the present invention to provide a garnishing wire which, on the one hand, achieves a large carding effect with low wear and, on the other hand, provides a large receiving space for fibers with high stability.

[0008] This problem is solved by a garment wire, a garment carrier and a carding machine according to claims 1, 13 and 14 of the present publication.

[0009] The carding wire according to the invention has a foot section designed to be positioned with its underside, which is located at one end of the carding wire in its vertical direction, on the surface of a carding wire carrier of a carding machine. A carding wire carrier of a carding machine, such as a carding machine or a carding machine, is, for example, a roller, a cover bar of a traveling cover, or a stationary cover element. On rollers, the carding wire is naturally wound in a helical fashion, while on cover elements it can also be arranged in a straight line. In order to be able to describe the geometry, in particular of the teeth of the carding wire, unambiguously, it is therefore assumed—also, but not only, in this document—that the carding wire is in a straight state. Accordingly, the longitudinal direction of the carding wire is the direction in which the straightened carding wire extends in principle endlessly.The teeth extend perpendicularly from this longitudinal direction and perpendicular to the underside of the foot section, which lies in a plane when the wire is stretched, in a so-called vertical direction away from the foot section. The third, perpendicular spatial direction is called the lateral direction. The foot section can, for example, have lateral outer surfaces extending in the lateral direction to provide support against adjacent turns of the same wire. In this context, rectangular or interlocking foot sections can be advantageous. The foot section can be wider in the lateral direction than the blade section so that the necessary channels for the fibers are present between the teeth in the lateral direction. The foot section has a height in the vertical direction.

[0010] The wire assembly according to the invention has a leaf section in which the end of the wire assembly opposite the underside is formed in the vertical direction. The leaf section can be narrower than the base section and can advantageously be designed to decrease in width (in the lateral direction) towards the top. The leaf section has a leaf height in the vertical direction. The sum of the leaf height and the base height can be the total height of the wire assembly. The boundary between the leaf section and the base section can be as follows: In the case of an unlinked, rectangular base section, the base section terminates upwards at the point where the width of the wire assembly begins to decrease. In the case of a linked base section, the base section can terminate upwards in a flat surface that lies parallel to the underside of the base section.In accordance with the functions of the foot section outlined above, the upper limit of the foot section must be determined. The blade section can be designed to widen towards the bottom, with the widening near the tooth tips being relatively gradual and linear, while near the foot section the widening can occur more rapidly up to the maximum width. The foot section can begin at the point where the blade section has reached its maximum width.

[0011] The blade height of the wire assembly according to the invention is greater than the base height. This allows, firstly, deeply punched tooth spaces to be formed in the blade section, providing a large volume for accommodating a large number of fibers. Secondly, it creates a base area that is well suited for winding onto a roller in a helical fashion.

[0012] The blade section of the wire assembly according to the invention has a plurality of identical tooth bodies arranged successively in the longitudinal direction. By definition, a tooth body extends longitudinally between two first recesses of the blade section, which extend vertically as far as possible towards the base section. Recesses that do not extend as far towards the base section as the first recesses, which by definition are the deepest recesses, are referred to as second recesses. The tooth bodies are arranged longitudinally spaced at intervals. Here, "interval" refers to a distance dimension that can be between 1.3 mm and 5.5 mm, or advantageously between 1.5 mm and 4 mm, and even more advantageously between 1.8 mm and 3.5 mm. The first recesses are also arranged at intervals correspondingly within the same interval.

[0013] Each tooth body of the wire assembly according to the invention has a first tooth tip and at least one second tooth tip arranged on it. A first tooth tip adjoins a first recess and points in the direction of this first recess. The wire assembly according to the invention is characterized in that all first and second tooth tips point in the same direction. Advantageously, this direction has a component in the longitudinal direction. For example, all first and second tooth tips point in the longitudinal direction or against the longitudinal direction.

[0014] On each tooth body, the first tooth tip and the second tooth tip located furthest away from the first tooth tip are arranged longitudinally at a tooth tip spacing that is less than 50%, preferably less than 45%, particularly preferably less than 40%, and most preferably less than 35% of the pitch. If two or more second tooth tips are arranged on one tooth body, the tooth tip spacing is determined by the distance from the first tooth tip of that tooth body to precisely the second tooth tip of that tooth body that is furthest away longitudinally from the first tooth tip of that tooth body.

[0015] By adding a second tooth tip to a single tooth body, the number of effective tooth tips is increased, thereby improving the carding action in terms of fiber opening and singulation according to the higher tip count (ppsi). This results in a higher quality fleece or yarn. The higher tip count also reduces wear per tip, thus increasing the service life of the carding wire. Simultaneously, by adding a second tooth tip to a single tooth body, no additional tooth body is required for the second tip. This allows the existing tooth body to be designed to be stable (e.g., wide in the longitudinal direction) without significantly reducing the fiber holding space between the tooth bodies. If the tip count (ppsi) were achieved by reducing the pitch, the tooth bodies would be positioned closer together, which would compromise their stability or reduce the size of the fiber holding space.Enlarging the receiving space by increasing the tooth cut depth would, in turn, reduce the stability of the tooth bodies and make it more difficult to extract the fibers from the very deep tooth cut. These conventional measures for optimizing the carding wire cannot therefore achieve the synergistic effect of the measures according to the invention. When the carding wire according to the invention is used on worker or doffer rollers, an additionally improved transfer ratio from the cylinder is achieved without any loss of quality, because the carding performance (fiber opening and singulation, or in short, "parallelization") is also increased.In particular, the latter advantages cannot naturally be derived from known publications on double teeth on trim wires for cylindrical rollers, nor are they readily apparent from the aforementioned boundary conditions for optimizing trim wires with the required receiving space. Furthermore, additional advantages arise in the production of fine nonwovens because the numerous tips provide support at more points, resulting in a more uniform structure.

[0016] On the tooth body of the fitting wire, a tooth face may be formed by the surface of the tooth body adjacent to the first notch of the tooth body. At least in a tip section adjacent to the first tooth tip, the tooth face may be inclined towards the base section or run perpendicular to the longitudinal direction, so that, viewed in a lateral direction perpendicular to both the longitudinal and vertical directions, the tooth face forms an acute first working angle with the vertical direction. InIn this document, an angle is considered "acute" if its value is between 0° and 90°. The tooth body may be bounded by a tooth back on the side opposite the tooth face. This tooth back, together with the adjacent tooth face of the following tooth body, defines the receiving space for the fibers to be processed. A tooth tip spacing of, for example, less than 50%, 45%, 40%, or 35% allows for a tooth body with a less steep tooth back. This facilitates the retraction of fibers from the receiving space. A minimum back angle of 25° to 80° or 35° to 70° relative to the vertical direction of the tooth back can be advantageous in this context.A minimal angle to the vertical direction of the tooth ridge of 30° to 85° or 40° to 80° can be advantageous – relative to the first tooth depth – particularly in the upper half of the ridge's extension or from above one-third of the first tooth depth. The ridge can curve downwards in the vertical direction, transitioning into a first or second root. The ridge can curve upwards in the vertical direction, extending into a first or second apical portion. The ridge can be straight between the upper and lower transitions. The ridge can be divided into two straight sections between the upper and lower transitions. In In such a design, the back angle of the section located closer to the first or second tooth tip is greater than the back angle of the section located closer to the first or second tooth base.

[0017] All first and second tooth tips point in the same direction. Advantageously, each first tooth tip is bordered by a first tooth face inclined towards the base. Advantageously, each second tooth tip is bordered by a second tooth face inclined towards the base. Advantageously, the first tooth tip and / or the second tooth tip are thin, so that, for example, no plateau or no plateau with a longitudinal extent of more than 0.1 mm is formed at the first and / or the second tooth tip.

[0018] The first working angle can be between 0° and 60°, preferably between 20° and 60°, and even more preferably between 20° and 55°. A second working angle can be read on every second tooth face. The second working angle can be between 0° and 60°, preferably between 20° and 60°, and even more preferably between 20° and 55°.

[0019] The first tooth face can have a first retention section adjacent to the tip section in the vertical direction. This retention section has an acute retention angle relative to the vertical direction, which is greater than the first working angle of the adjacent tip section. A first tooth face with such a retention section can better hold the fibers in the receiving space. The angle relative to the vertical direction in the retention section can be larger than in a section of the tooth face located above or below it. The retention section can have a minimum extent of 0.1 mm. The tip section can be straight in the horizontal direction. The retention section can be straight or partially straight in the horizontal direction. The retention section can transition into the tip section with a kink in the horizontal direction, taking manufacturing tolerances into account.The retention section, viewed in the width direction, can transition into a section of the first tooth face that is closer to the first tooth base by means of a curve. The curve can have a radius of at least 0.14 mm, at least 0.15 mm, at least 0.18 mm or more.

[0020] The first tooth face can, in the vertical direction, have one or more further retention sections following the tip section and the first retention section, with a larger acute retention angle than any intermediate section of the first tooth face adjacent to the first tooth tip. This increases the retention force on the fibers in the receiving space. The acute retention angle of the first retention section and / or the further retention section(s) can be between 50° and 90°. The acute retention angle of the first retention section and / or the further retention section(s) can be between 80° and 90°. The acute retention angle of the first retention section and / or the further retention section(s) can be between 60° and 80°. The acute retention angle of the first retention section and / or the further retention section(s) can be between 50° and 60°.

[0021] The first recess of the blade section can include a first tooth base, which is the point of the first recess closest to the base section in the vertical direction. The tooth body can have a first tooth depth that corresponds to the vertical distance from the first or second tooth tip located highest on the tooth body to the first tooth base, and is less than or equal to the blade height. The first tooth depth can be greater than the difference between the overall height and the first tooth depth. The first tooth depth can be equal to or greater than the base height. The first tooth depth can be between 1 mm and 4 mm, and preferably between 1.4 mm and 3.3 mm. A large first tooth depth can be advantageous to obtain a sufficiently large receiving area. In this context, minimum dimensions for the first tooth depth are also crucial for an effective receiving area.Trim wires for cylindrical rollers, especially for yarn manufacturing applications, often have a first tooth depth of 0.7 mm or less. The receiving spaces with such a small first tooth depth are unsuitable for use on a worker or take-off roller because the shallow first tooth depth prevents the reliable formation of a nonwoven fabric with sufficient weight.

[0022] The receiving space of the retaining wire, viewed in the width direction, can be formed by the surface of the first recess above a receiving space boundary that runs parallel to the longitudinal direction at a distance from the first tooth base. The distance of the receiving space boundary from the first tooth base can be between 40% and 60% of the first tooth depth, and for example, 50% of the first tooth depth. Additionally, the receiving space can include the surface or surfaces of one or more secondary recesses. The area of ​​the receiving space can be larger than the partial surface of the adjacent tooth body above the receiving space boundary.

[0023] The vertical distance from the base of the first tooth to the apical portion, or the vertical distance from the base of the first tooth to a second apical portion, can differ between 0% and 30% or between 0% and 20%, preferably between 0% and 10%, of the first tooth depth. This can result in the first and second apical portions being positioned at different heights on the tooth body to a limited extent. This allows the carding action and wear of the first and second apical portions to be mutually adjusted and optimized.

[0024] A second tooth depth in the vertical direction of every second recess adjacent to a second tooth tip, where the second tooth tip points towards the second recess, can be between 0.5% and 50%, or between 0.5% and 30%, or between 0.5% and 20% of the first tooth depth. The second tooth depth can be determined vertically. The second tooth depth can be measured from the lowest point of the second recess closest to the base section to the second tooth tip adjacent to the second recess in question.

[0025] The foot width, measured at the foot section in the width direction, can range from 0.5 mm to 3.5 mm, preferably from 0.65 mm to 1.3 mm. The foot section can be either linked or unlinked in all wire assembly wires according to the invention.

[0026] The wire assembly according to the invention is preferably suitable for being wound onto a take-off and / or worker roller. The wire assembly according to the invention is preferably suitable for being wound onto a licker roller. The wire assembly according to the invention is preferably suitable for being wound onto a cylinder of a carding machine. The wire assembly according to the invention is preferably configured for being wound onto a take-off and / or worker roller. The wire assembly according to the invention is preferably configured for being wound onto a licker roller. The wire assembly according to the invention is preferably configured for being wound onto a cylinder of a carding machine.

[0027] A carding machine's trim carrier according to the invention comprises a trim wire according to the invention. Trim carriers such as rollers, cover bars of a traveling cover, or stationary cover elements can be fitted with trim wires or other carding elements (e.g., flexible trims) outside the carding machine in order to then be transported to and installed in the carding machine. Fitting is possible, particularly with rollers, even when installed in the machine. In any case, in this document, a trim carrier also includes a fitted trim carrier, i.e., a unit consisting of a trim carrier and a trim (trim wire, flexible trim, etc.). A carding machine according to the invention comprises a trim carrier according to the invention. The trim carrier of the carding machine according to the invention can be a worker roller and / or a take-up roller of the carding machine. The carding machine can be a carding machine or a carding machine.A spool holder according to the invention can be advantageously used on all carding machines. The following figures and embodiments are accordingly limited to the description of the spool wire according to the invention. For an explanation of the construction and operation of the spool holders and carding machines, reference is made to the prior art cited above or to "The Rieter Manual of Spinning", Werner Klein, 2014 or to "Handbook of nonwovens", S.J. Russell, 2007. Fig. 1 Figure 1 Fig. 2 shows a symbolic view in the width direction of a garnish wire according to the invention for a worker or take-off roller. Figure 2 Fig. 3 shows a symbolic view in the width direction of a second trim wire according to the invention for a worker or take-off roller. Figure 3 Fig. 4 shows a symbolic view in the width direction of a garment wire according to the invention for a lickerin roller. Figure 4Fig. 5 shows a symbolic view in the width direction of a second wire assembly according to the invention for a lickerin roller. Figure 5 Fig. 6 shows a symbolic view in the width direction of a garment wire according to the invention for a cylinder of a carding machine. Figure 6 Fig. 7 shows an upper section of a tooth body of a wire assembly according to the invention. Figure 7 shows an upper section of a tooth body of another set wire according to the invention.

[0028] Figure 1 Figure 1 shows a symbolic view in the width direction z of a trim wire 1 according to the invention for a worker or take-off roller. The trim wire 1 comprises a foot section 2 which is in Figure 1The bottom of the section 2 is shown in the vertical direction y. Above the foot section 2, four tooth bodies 7, arranged in the blade section 5, are shown as an example. In the longitudinal direction x, a cross-section through the wire 1 is shown to the right of the section of the wire 1 comprising four tooth bodies 7, which is viewed in the lateral direction z. The cross-section shows the lateral direction z, the foot width 24, and – as in the section on the left – the underside 3 of the foot section 2, with which the wire 1 is arranged on a wire carrier. The foot section 2 is obviously not designed to be threaded onto a wire carrier in a linked manner. Both in the section on the left and in the cross-section on the right, it is clearly visible that the blade height 6 is greater than the foot height 4. For Figure 1And for all further figures, it should be noted that while the figures are symbolic in the sense that certain details are omitted or simplified (for example, the recesses 8, 23 in section 5 of the sheet are not shown in the cross-sectional representations), they are largely to scale, so that distances and angles can be approximated from the figures, taking the corresponding scale into account (the limited resolution of the drawings must also be considered). The tooth bodies 7 of the Figure 1The tooth bodies 7 comprise a first tooth tip 10 and exactly one second tooth tip 11. The first tooth tip 10 and the first tooth breast 13 border the first recess 8, which extends in the vertical direction y to near the base section 2. The tooth bodies 7 are spaced apart in the longitudinal direction x below a division 9 and each is separated from the other by a first recess 8. The first recess 8 is significantly deeper than the second recess 23; accordingly, in the Figure 1Four distinct tooth bodies 7 are clearly visible, separated by first recesses 8 that extend maximally towards the base section. The first tooth tip 10 and the second tooth tip 11 of a tooth body 7 are spaced apart by a tooth tip spacing 12. The tooth tip spacing 12 is clearly less than 50% of the pitch 9. The first tooth tip 10 points towards the first recess 8. The second tooth tip 11 points towards the second recess 23. The first tooth depth 20 is illustrated by an auxiliary line connecting two first tooth bases 21.

[0029] In the third recess from the left 8 and in the fourth tooth body from the left 7, there is in Figure 1The receiving space boundary 25 is shown, which runs in the vertical direction y at approximately 50% of the height of the first tooth depth 20. The area of ​​the first recess 8 above the receiving space boundary 25 (receiving space 26) is shown hatched with hatching lines running from the lower left to the upper right. The area of ​​the (fourth) tooth body 7 above the receiving space boundary 25 (tooth body surface 26) is shown hatched with hatching lines running from the upper left to the lower right. The area of ​​the receiving space 26 is clearly larger than the tooth body surface 27. The area of ​​the second recess 23 (between the first tooth tip 10 and the second tooth tip 11) can also be included in the receiving space 26. An area of ​​the receiving space 26 that is larger than a tooth body surface 27 can be advantageous for all assembly wires 1 according to the invention, even if the areas are only in Figure 1with the corresponding hatching. The position of the recording space boundary 25 in the vertical direction y can be determined for all garment wires according to the invention (i.e., according to all figures, including those shown in Figure 1). Figure 1 ) lie within the entire aforementioned area.

[0030] Figure 2 Figure 1 shows a symbolic view in the width direction z of a second trim wire 1 according to the invention for a worker or take-off roller. The above description of the features of the trim wire 1 of the Figure 1 applies to the Figure 2 It will therefore not be repeated in the same way. The garment wire 1 of the Figure 2 differs from the garnish wire 1 of the Figure 1 - except by differing quantitative dimensions of the individual features - by exactly one first retention section 16 and exactly one further retention section 18, which are arranged in the tooth face 13 of the tooth body 7. InIn the vertical direction y above the first retaining section 18, a tip section 14 is arranged, which runs straight at a first working angle 15 to the vertical direction y. The first retaining section 16 is also at least partially straight and runs at a retaining angle 17 to the vertical direction y, which is greater than the first working angle 15. The further retaining section 18 is also at least partially straight and runs at a retaining angle 17 to the vertical direction y, which is greater than the angle to the vertical direction y at which the higher intermediate section 19 runs. The retaining angle 17 of the further retaining section 18 is also greater than the angles that can be read below the further retaining section 18 in the course of the tooth face 13.For clarification, the holding angle 17 of the first holding section 16 and the first working angle 15 of the tip section 14 are shown in an enlarged section of a tooth body to the right above the section shown. Figure 2 depicted.

[0031] Figure 3 Figure 1 shows a symbolic view in the width direction of a trim wire according to the invention for a lickerin roller. The above description of the features of the trim wire 1 of the Figure 1 applies to the Figure 3 It will therefore not be repeated in the same way. The garment wire 1 of the Figure 3 differs from the garnish wire 1 of the Figure 1- Apart from differing quantitative dimensions of the individual features - by a foot section 2, which is designed for linked winding, as can be seen in particular from the cross-section shown again on the right. The trim wire can have the following dimensions: The foot height 4 is 1.5 mm. The foot height 4 can be between 1 mm and 2.2 mm for all trim wires 1 according to the invention. The blade height 6 is 3.5 mm. The blade height 6 can be between 2 and 4 mm for all trim wires 1 according to the invention. The pitch 9 is 2.7 mm. The pitch 9 can be between 1.5 mm and 5.5 mm for all trim wires 1 according to the invention. The tooth tip spacing 12 is 0.75 mm. The tooth tip spacing 12 can be between 0.6 mm and 2.7 mm for all trim wires 1 according to the invention. The first working angle 15 is 20°. The first working angle 15 can be between 0° and 60° for all garment wires 1 according to the invention.The first tooth depth 20 is 2.5 mm. The first tooth depth 20 can be between 1 mm and 4 mm for all wire sets 1 according to the invention. The second tooth depth 22 is 0.5 mm. The base width 24 is 2.12 mm.

[0032] Figure 4 Figure 1 shows a symbolic view in the width direction of a second trim wire according to the invention for a lickerin roller. The trim wire of the Figure 4 differs essentially in the following dimensions from the garnish wire of the Figure 3 The tooth tip spacing 12 is 0.6mm and the first working angle 15 is 15°.

[0033] Figure 5 Figure 1 shows a symbolic view in the width direction of a garment wire according to the invention for a cylinder of a carding machine. The above description of the features of the garment wire 1 of the Figure 1 applies to the Figure 5 It will therefore not be repeated in the same way. The garment wire 1 of the Figure 5 differs from the garnish wire 1 of the Figure 1 and the set wires of the other figures – apart from differing quantitative dimensions of the individual features – by a first tooth tip 10 and a second tooth tip 11, which are not equidistant from the first tooth root 21 in the vertical direction y. The second tooth tip 11 is positioned higher, consequently the first tooth depth 20 is to be measured between the first tooth root 21 and the second tooth tip 11. The set wire can have the following dimensions: The base height 4 is 1.15 mm. The blade height 6 is 1.35 mm. The pitch 9 is 1.8 mm. The tooth tip spacing 12 is 0.44 mm. The first working angle 15 is 35°: The first tooth depth 20 is 1.1 mm. The second tooth depth 22 is 0.3 mm. The base width 24 is 0.9 mm.

[0034] Figure 6 Figure 1 shows an upper section of a tooth body 7 of a wire assembly 1 according to the invention. The tooth body 7 shown corresponds essentially to the tooth body 7 of the Figure 2In the enlarged view of the Figure 6On the left, the first tooth tip 10 and the tip section 14, located above the first retaining section 16, can be seen. The first working angle 15 of the tip section 14 is also shown. It is clearly visible that the tip section 14 is inclined more strongly in the longitudinal direction in its upper region adjacent to the first tooth tip 10 than in its lower region adjacent to the first retaining section. The second tooth tip 11 also has an upper region adjacent to the tooth tip 11 which, at the second working angle 29 to the vertical direction y, is inclined more strongly in the longitudinal direction x than a lower region adjacent to the second tooth base. Such a more inclined first tooth tip 10 and / or second tooth tip 11 is advantageous for all trim wires 1 according to the invention.The area of ​​greater inclination can be limited to, for example, 0.1mm or to between 0.05 and 0.3mm along the height direction y.

[0035] Figure 7 Figure 1 shows an upper section of a tooth body 7 of a further wire assembly 1 according to the invention. The tooth body 7 has, from the top left, a tip section 14, a first retaining section 16, and a second retaining section 18. The tooth body 7 further has a first tooth tip 10 and two second tooth tips 11. To clarify the definition of the tooth tip spacing 12, it is shown, by definition, between the first tooth tip 10 and the second tooth tip 11 of this tooth body 7 that is furthest from it. On the right edge of the Figure 7 The back angle is symbolized as 28 to illustrate this. Reference symbol list 1 wire trim 2 Foot section 3 Underside of the foot section (2) 4 foot height 5 Leaf section 6 Leaf height 7 Tooth body 8 first extraction 9 division 10 first tooth tip 11 second tooth tip 12 Tooth tip spacing 13 first tooth breast 14 Top section 15 first working angle 16 first stopping section 17 Mounting bracket 18 further stopping section 19 Intermediate section 20 first tooth depth 21 first tooth base 22 second tooth depth 23 second recess 24 foot width 25 Recording area boundary 26 Recording room 27 Tooth body surface 28 Back angle 29 second working angle x Longitudinal direction y Altitude z Latitude

Claims

1. Card wire (1) for a clothing carrier of a carding machine • which has a base portion (2) which is provided to be arranged with its underside (3), which is located at one end of the card wire (1) in the height direction (y) thereof, on the surface of a clothing carrier and which has a foot height (4) in the height direction (y) • and which has a blade portion (5) on which the end in the height direction (y) of the card wire (1) opposite the underside (3) is disposed and which has a blade height (6) in the height direction (y), wherein the blade height (6) is greater than the foot height (4), wherein the blade portion (5) comprises a plurality of identical tooth bodies (7) following one another in the longitudinal direction (x), wherein a tooth body (7) extends in the longitudinal direction (x) between two first recesses (8) of the blade portion (5) which first recesses (8) extend in the height direction (y) at maximum towards the base portion (2), wherein the tooth bodies (7) are distanced in the longitudinal direction (x) from one another at a pitch (9), wherein a first tooth tip (10) and at least one second tooth tip (11) are arranged on each tooth body (7), wherein the first tooth tip (10) is adjacent to a first recess (8) and points in the direction of this first recess (8), wherein on each tooth body (7), the first tooth tip (10) and the second tooth tip (11), furthest away from the first tooth tip (10), are arranged in the longitudinal direction (x) at a tooth tip spacing (12) which is less than 50%, preferably less than 45%, more preferably less than 40% and most preferably less than 35% of the pitch (9), characterised in that all first and second tooth tips point in the same direction.

2. Card wire (1) according to claim 1 characterised in that a first tooth face (13) of the tooth body (7), which is provided by the surface of the tooth body (7) adjacent to the first recess (8) of the tooth body (7), at least in a tip section (14) adjacent to the first tooth tip (10), is inclined towards the base portion (2) or extends perpendicular to the longitudinal direction (x), so that the first tooth face (13), viewed in a width direction (z) perpendicular to the longitudinal direction (x) and the height direction (y), extends at an acute first working angle (15) to the height direction (y).

3. Card wire (1) according to claim 2 characterised in that the first working angle (15) is between 0° and 60°, preferably between 20° and 60° and even more preferably between 20° and 55°.

4. Card wire (1) according to claim 2 or 3 characterised in that the first tooth face (13) adjacent to the tip section (14) comprises a first undercut (16) which extends at an acute undercut angle (17) to the height direction (y) which is greater than the first working angle (15) of the adjacent tip section (14).

5. Card wire (1) according to claim 4 characterised in that the first tooth face (13) comprises, following the tip section (14) and the first undercut (16), one or more further undercuts (18) with a larger acute undercut angle (17) than each adjacent intermediate section (19) of the tooth face (13) closer to the first tooth tip (10).

6. Card wire (1) according to claim 4 or 5 characterised in that the acute undercut angle (17) of the first undercut (16) and / or of the further undercuts (18) is between 50° and 90°.

7. Card wire (1) according to one of the preceding claims characterised in that the first recess (8) of the blade portion (5) comprises a first tooth base (21), which is a point closest to the base portion (2) in the height direction (y), and a first tooth depth (20) of the tooth body (7), which corresponds to the distance in the height direction (y) from which is disposed highest at the tooth body (7) of the first tooth tip (10) and the second tooth tip (11) to the first tooth base (21), is less than or equal to the blade height (6).

8. Card wire (1) according to claim 7 characterised in that the first tooth depth (20) is equal to or greater than the foot height (4).

9. Card wire (1) according to claim 7 or 8 characterised in that the first tooth depth (20) is between 1 mm and 4 mm and preferably between 1.4 mm and 3.3 mm.

10. Card wire (1) according to one of claims 7 to 9 characterised in that the distance in the height direction (y) from the first tooth base (21) to the first tooth tip (10) or the distance in the height direction (y) from the first tooth base (21) to a second tooth tip (11) differs between 0% and 30% or between 0% and 20%, preferably between 0% and 10% from the first tooth depth (20).

11. Card wire (1) according to one of claims 7 to 10 characterised in that a second tooth depth (22) in the height direction (y) of every second recess (23) which is adjacent to a second tooth tip (11) and in which the second tooth tip (11) is directing towards the second recess (23), is between 0.5% and 50% or between 0.5% and 30% or between 0.5% and 20% of the first tooth depth (20).

12. Card wire (1) according to one of the preceding claims characterised in that a base width (24), which is to be measured at the base portion (2) in the width direction (z), is from 0.5 mm to 3.5 mm, preferably from 0.65 mm to 1.3 mm.

13. Clothing carrier of a carding machine characterised by a card wire (1) according to one of claims 1 to 12.

14. Carding machine characterised by a clothing carrier according to claim 13.

15. Carding machine according to claim 14 characterised in that the clothing carrier is a worker roller or a take-off roller or a licker roller or the carding machine is a comber and the clothing carrier of this comber is a cylinder.

Images