EP4015690B1 - Outil à tricoter - Google Patents

Outil à tricoter Download PDF

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Publication number
EP4015690B1
EP4015690B1 EP20214742.7A EP20214742A EP4015690B1 EP 4015690 B1 EP4015690 B1 EP 4015690B1 EP 20214742 A EP20214742 A EP 20214742A EP 4015690 B1 EP4015690 B1 EP 4015690B1
Authority
EP
European Patent Office
Prior art keywords
tool
knitting
knitting tool
shaft
height
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20214742.7A
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German (de)
English (en)
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EP4015690A1 (fr
Inventor
Jörg Sauter
Roland Simmendinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to PT202147427T priority Critical patent/PT4015690T/pt
Priority to EP20214742.7A priority patent/EP4015690B1/fr
Priority to DE102021119011.8A priority patent/DE102021119011A1/de
Priority to KR1020237013304A priority patent/KR20230119108A/ko
Priority to PCT/EP2021/081984 priority patent/WO2022128297A1/fr
Priority to JP2023534709A priority patent/JP2024500337A/ja
Priority to EP21815451.6A priority patent/EP4263925A1/fr
Priority to CN202180085416.6A priority patent/CN116648534A/zh
Priority to US18/267,934 priority patent/US20240052537A1/en
Priority to TW110144327A priority patent/TW202225511A/zh
Publication of EP4015690A1 publication Critical patent/EP4015690A1/fr
Application granted granted Critical
Publication of EP4015690B1 publication Critical patent/EP4015690B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06—Sliding-tongue needles

Definitions

  • Knitting tools for use in industrial knitting machines have been further developed since the 19th century and are always faced with new challenges due to the ongoing developments in the field of knitting machines. In recent years, the reduction of friction and wear has come to the fore - especially against the background of rising energy prices and production costs.
  • Conventional knitting tools have a shank that runs in the longitudinal direction of the tool and is designed, at least in one functional area, to be guided in the needle channels of knitting machines (both circular knitting and flat knitting machines) and, within a defined operating range, to perform a largely rectilinear knitting movement in the longitudinal direction of the tool perform.
  • the force for this knitting movement is transmitted to the knitting tool via a foot which protrudes beyond the shaft of the knitting tool in a vertical direction which runs perpendicularly to the longitudinal direction of the tool.
  • a transverse force also acts on the base in a width direction that is perpendicular to the tool longitudinal direction and height direction.
  • the transverse force leads to an inclined position of the knitting tool in the needle channel and is supported by contact with the side walls of the needle channel. Due to the inclined position, the knitting tool has linear contact with the needle channel only on the top and bottom.
  • the inclination of the knitting tool in a needle channel is illustrated in 2 the EP1860219A1 shown: the resulting contact points are marked there with oval circles.
  • the FR2260262A7 shows a knitting tool that is used to reduce the vibrations of the hook (stitch-forming means) that occur at high knitting speeds and thus prevent needle breakage.
  • the needle shaft points at its foot ( 1 , #5) adjoining, posterior portion of the shaft has a wavy shape ( 1 , #4c and #4d). This wavy shape is intended to dampen vibrations in the longitudinal direction of the needle.
  • the DE3612316A1 shows a knitting tool said to have improved shock absorbing properties.
  • the knitting tool has at least one elongated groove extending in the longitudinal direction of the shaft.
  • the 4 shows a special embodiment of such a knitting tool, in which arcuate cutouts ( Fig.4 , #11) are arranged. Bridges are formed by these cutouts, which reduce the weight of the knitting needle and give it a resilient resilience in sections.
  • the DE3213158A1 shows a knitting tool with a hook element (stitch-forming means) and a closing element, the hook of the hook element being able to be closed by a relative movement between the closing element and the hook element.
  • This form of knitting tool is also known as a compound needle.
  • the figure 5 shows a special embodiment of this knitting tool with grooves ( figure 5 , #7 and #9) suitable for taking up a thread. These flutes ( figure 5 , #7 and #9) directly adjoin the hook element in the longitudinal direction and are not guided in a needle channel.
  • the EP2927360A1 shows a knitting tool with a meander shaft, which has areas of reduced thickness and in this way reduces the friction between the knitting tool and the needle channel.
  • the meander shank has a plurality of shank regions which are offset relative to one another in the height direction and each extend in the longitudinal direction of the tool. These shaft areas are connected to one another by webs which extend in the vertical direction.
  • the meandering shank of the knitting tool has no shank sections that are inclined to the longitudinal direction of the tool: all shank sections either point exactly in the longitudinal direction of the tool or enclose an angle of 90° to the longitudinal direction of the tool.
  • the aforementioned EP1860219A1 shows a knitting tool whose shaft has a functional area.
  • the height of the centroid of a cross section of the knitting tool lying in a plane spanned by the height and width direction changes within the functional area with the position of the cross section in the longitudinal direction of the tool. This is achieved by so-called “floating sections”.
  • This "Floating sections” are spaced from both the bottom of the knitting tool and the top of the knitting tool.
  • the “floating sections” as well as the remaining sections of the functional area run parallel to the bottom of the needle channel of the knitting machine in which the knitting tool is used - they run essentially in the longitudinal direction of the knitting tool.
  • the height of the centroid is constant within the "floating sections”.
  • the “floating sections” are offset from the top and bottom of the knitting tool, the contact area between the knitting tool and the needle channel should be reduced.
  • the “floating sections” are connected to one another by shaft sections which essentially extend in the longitudinal direction of the tool and are arranged on the top and bottom of the knitting tool and are intended to form a linear contact surface with the needle channel. In such an embodiment of a knitting tool, there are gaps above and below the "floating sections" in which dirt can accumulate during the knitting operation.
  • the object of the invention is therefore to specify a knitting tool and a knitting system which, during the knitting operation, have reduced friction compared to conventional knitting tools and knitting systems and also reduce the accumulation of dirt.
  • a knitting tool according to the invention which has at least one foot offers further advantages.
  • the foot extends essentially in the height direction.
  • the foot projects beyond the surrounding areas of the knitting tool in the vertical direction.
  • Driving forces or driving movements can be introduced into the knitting tool via the foot.
  • this foot engages in a cam with a cam-shaped cam, which transmits a knitting movement in the longitudinal direction of the tool to the foot by moving the knitting tool relative to the stationary cam.
  • a knitting tool that includes at least two feet offers further advantages.
  • the teaching according to the invention can also be advantageously used with knitting tools that have more than two feet.
  • the functional area is divided into at least two sub-areas, each of which has sub-sections in which the slope of the center of gravity line is between 0 and ⁇ , and these sub-areas are spaced apart from one another in the longitudinal direction of the knitting tool. It is particularly advantageous if the at least two subregions are at a distance which is at least as large, but preferably 1.5 times as large as the longitudinal extent of the foot—ie the foot length—in the longitudinal direction of the tool. Furthermore, it is advantageous if the foot is arranged between the at least two partial areas.
  • the knitting tool has at least a portion of the functional area that is in front of the foot in the longitudinal direction of the tool and has at least a portion of the functional area that is downstream of the foot in the longitudinal direction of the tool.
  • the foot is in knitting as Force application point for the driving forces exposed to high loads.
  • the upstream and downstream sub-areas of the functional area can distribute and support the drive forces introduced during the knitting operation.
  • a knitting tool according to the invention is advantageous in which at least one sub-area—but preferably two sub-areas—of the functional area directly adjoins the foot or is only at a distance from the foot in the longitudinal direction of the tool that is less than or equal to 10% of the longitudinal extension of the entire knitting tool. A distance that is less than 5% of the longitudinal extent of the entire knitting tool is particularly advantageous.
  • the functional area has at least one local extremum—minimum or maximum—of the height of the center of gravity line.
  • the slope of the line of gravity is therefore 0 at this at least one extreme.
  • the subsections described above follow in the surrounding areas, in which the slope of the line of gravity lies between 0 and ⁇ . If a transverse force acts on a knitting tool in a needle channel, it rests against the side walls of the needle channel due to a resulting inclined position in the area of the local minima and maxima. Consequently, the transverse forces are supported there and contact points and, as a result of a knitting movement of the knitting tool, also friction occur. It is particularly advantageous if the shaft is designed in the area of local minima and maxima in such a way that a contact point with a small contact surface is produced in each of these areas during knitting.
  • At least two local extrema of the height of the centroid line have the same height. It is particularly advantageous if at least two local minima and/or two local maxima have the same height. Further advantages result when at least two local maxima have the same height and a third local maximum has a lower height. It is just as advantageous if at least two local minima have the same height and a third local minimum has a greater height. It is particularly advantageous if the at least two local extremes of the line of gravity, which have the same height, are global extremes—ie the height of the line of gravity is nowhere greater (global maximum) or smaller (global minimum).
  • a knitting tool is advantageous in which the surface of the shaft pointing in the positive height direction of the knitting tool - i.e. the direction in which the foot also projects beyond the surrounding tool areas - in the longitudinal direction of the tool at the locations of at least two local maxima of the center of gravity line has the same height and/or the surface of the shank pointing in the negative height direction - i.e. the direction that points down to the needle channel bed during knitting operation - of the knitting tool - hereinafter the bottom surface - has the same height at the locations of at least two local minima of the center of gravity line having. It is particularly advantageous if the top surface has the same height at the locations of the global maxima of the line of gravity and/or the bottom surface has the same height at the locations of the global minima of the line of gravity.
  • a knitting tool according to the invention is also advantageous in which at least one local extremum has a surface which is raised compared to the surface of a large part of the functional area in the width direction.
  • the knitting tool when used in a knitting machine, the knitting tool lies against a needle channel in the area of the local extrema. If the surface is raised at these points compared to the rest of the functional area, there is a clearly defined contact surface at the raised points and it is prevented that other areas of the knitting tool form contact points with parts of the knitting machine, for example due to manufacturing inaccuracies. Further advantages arise when the surface is raised in such a way that essentially punctiform contact points to the knitting machine are formed during the knitting operation.
  • the shaft is at a distance from the minimum shaft height of the functional area at the locations of local maxima of the line of gravity and from the maximum height of the shaft of the functional area at the locations of local minima of the line of gravity. It is particularly advantageous if this distance is at least half as large as the maximum shaft height of the functional area.
  • At least one partial area of the functional area comprises at least one recess which is triangular in the xz plane and/or wave-shaped recess which penetrates the functional area in the width direction. It is particularly advantageous if the height of the recess in the vertical direction is at least 50%, preferably at least 65%, of the shaft height.
  • a knitting tool according to the invention is advantageous in which the surface of the shank pointing in the positive vertical direction of the knitting tool - the cover surface - has a gradient in the positive tool longitudinal direction pointing in the tool ejection direction, which has a local maximum gradient in front of at least one local maximum of the height of the center of gravity line and /or the surface of the shank pointing in the negative vertical direction of the knitting tool - the bottom surface - has a gradient in the positive tool longitudinal direction pointing in the tool ejection direction, which has a local minimum gradient in front of at least a local minimum of the height of the center of gravity line.
  • the positive tool longitudinal direction, or the tool exit direction is the direction of the tool in which the end of the shaft on which the stitch-forming element is located also points.
  • the course of the base surface or cover surface forms "dirt noses" in this way, which, due to the slope of the surface, preferentially convey dirt in the negative longitudinal direction of the tool. The dirt is thus conveyed away from the stitches formed or the textile formed.
  • the surface of the shaft pointing in the positive vertical direction of the knitting tool - the top surface - and the surface of the shaft pointing in the negative vertical direction of the knitting tool - the bottom surface - run essentially parallel to one another in the subsections of the functional area.
  • the top surface and the bottom surface run parallel to one another, at least in sections. As a result, there is an even material and stress distribution in these subsections. It is particularly advantageous if the top surface and the bottom surface run essentially parallel in the entire functional area.
  • the length of the needle channel in the longitudinal direction of the knitting tool, the extension of the functional area in the longitudinal direction of the knitting tool and the amount of stroke of the knitting movement of the knitting tool during knitting are coordinated in such a way that at least 80%, preferably 90%, but preferably 100% of the extension of the functional area of the knitting tool in its tool longitudinal direction does not leave the needle channel during the knitting operation.
  • the extent of the functional area in the longitudinal direction of the tool describes the position of the functional area in the longitudinal direction of the tool relative to other components of the knitting tool.
  • the extent of the functional area is the area in the tool longitudinal direction between the front limit in the tool longitudinal direction and the rear limit in the tool longitudinal direction Boundary of the functional area.
  • a functional area has several sections that are spaced apart from one another in the longitudinal direction of the tool, the areas of the knitting tool that are arranged between these sections also count towards the extension of the functional area - for example a foot arranged between two sections.
  • the knitting tool is guided in its functional area by the needle channel and driving forces are supported in the needle channel. There are contact areas between the functional area of the knitting tool and the needle channel. If too large a part of the functional area leaves the needle channel in the knitting operation, the needle would be poorly guided as a result.
  • the selection ranges mentioned above have proven to be advantageous in order to ensure good guidance of the knitting tool.
  • the guiding area of the knitting tool is located completely within a needle channel during the entire knitting movement, ie it does not protrude from a needle channel, particularly in the longitudinal direction of the tool.
  • the upper edge of the needle channel is spaced a maximum of 0.5 mm, but preferably a maximum of 0.3 mm, from the highest point of the upper surface of the shaft pointing in the positive vertical direction of the knitting tool - i.e. the cover surface. This distance is referred to below as the height distance.
  • the height difference is advantageously as small as possible.
  • the upper edge of the needle channel is higher than or at the same height as the top surface at its highest point in the positive vertical direction. This ensures that the functional area of the knitting tool forms a contact area with the needle channel at the point of at least one local maximum and that there are no contact areas with the needle channel, particularly in the subsections of the functional area. It is particularly advantageous if the upper edge has essentially the same height in the vertical direction as the top surface at its highest point in the positive vertical direction.
  • the figure 1 shows a knitting tool 1, which has a shank 2, which extends mainly in the longitudinal direction z of the tool and on its positive side Tool longitudinal direction z pointing first end has a stitch-forming element 3 in the form of a hook.
  • the shank 2 has a cross-sectional area 8 at each point of its longitudinal extent in the tool longitudinal direction z, which lies in the plane spanned by the width direction y and height direction x.
  • the height of this cross-sectional area 8 - i.e. the cross-sectional area height 22 - in the height direction x is lower at every point than the shaft height 6.
  • the shaft height 6 means the height between the minimum and the maximum extent of the functional area 5 in the height direction x .
  • centroid line 4 is drawn in, which connects all centroids 9 of these cross-sectional areas 8 of the shank to one another by the shortest possible route.
  • the centroid line 4 includes in the illustrated embodiment 1 three local maxima 14 and three local minima 15.
  • cover surface 10 has the same height in the area of the three local maxima 14 .
  • the bottom surface 13 has the same height in the vertical direction x in the area of the three local minima 15 .
  • the center of gravity line 4 has a gradient that is greater than 0. The shank 2 is therefore inclined in these subsections 7 with respect to the longitudinal tool direction z and, in particular, does not run parallel to the longitudinal tool direction z.
  • the figure 2 shows the section AA, whose position is also shown in 1 is drawn in, and which goes through the shaft 2 in the functional area 5 at the point of a local maximum 14 of the center of gravity line 4 .
  • Parts of the functional area 5 are shown, with the functional area 5 extending over the entire shaft height 6 .
  • the upper height 6 is limited in the positive vertical direction x by the maximum upper height 12 and in the negative vertical direction x by the minimum upper height 11 .
  • the cross-sectional area 8 is shown hatched and has a centroid 9 that “lies” in the middle of the cross-sectional area 8 as viewed in the height direction x and width direction y.
  • the cross-sectional area 8 is delimited downwards in the negative height direction x by the base area 13 of the knitting tool 1 .
  • the bottom surface 13 is in the Fig.2 can also be seen in an area that lies outside the section plane and continues below the cross-sectional area 8 . Furthermore, the cross-sectional area 8 in the positive height direction x is upwards through the cover surface 10 of the Knitting tool 1 is limited, with the cover surface 10 being at the level of the maximum shaft height 12 . The bottom surface 13 - and thus the shaft 2 - is spaced at the point of the cross-sectional area 8 by the bottom distance 16 from the minimum shaft height 11 - in the negative height direction x below the local maximum 14 there is therefore a "free space" between the shaft 2 and the minimum Shaft height 11.
  • the figure 3 shows the cut BB its position also in 1 is drawn in and goes through the shaft 2 in the functional area 5 at the point of a local minimum 15 of the center of gravity line 4 .
  • Parts of the functional area 5 are shown, with the functional area 5 extending over the entire shaft height 6 .
  • the upper height 6 is limited in the positive vertical direction x by the maximum upper height 12 and in the negative vertical direction x by the minimum upper height 11 .
  • the cross-sectional area 8 is shown hatched and has a centroid 9 that “lies” in the middle of the cross-sectional area 8 as viewed in the height direction x and width direction y.
  • the cross-sectional area 8 is delimited upwards in the positive vertical direction x by the cover area 10 of the knitting tool 1 .
  • the top surface 10 is in the Fig.3 can also be seen in an area that lies outside the sectional plane and continues above the cross-sectional area 8 . Furthermore, the cross-sectional area 8 is delimited downwards in the negative height direction x by the bottom surface 13 of the knitting tool 1, with the bottom surface 13 in 3 is at the level of the minimum shaft height 11.
  • the cover surface 10, is spaced at the point of the cross-sectional area 8 by the cover distance 17 from the maximum shaft height 12 - in the positive height direction x above the local minimum 15 there is a "free space" between the shaft 2 and the maximum shaft height 12.
  • the figure 4 shows a knitting tool 1 according to the invention, which comprises a foot 18 which is suitable for absorbing drive forces and drive movements during knitting and transferring them to the knitting tool 1.
  • Two partial areas 33 of the functional area 5 adjoin in the positive tool longitudinal direction z in front of and behind the foot 18 .
  • the two partial areas 33 together form the functional area 5 and are spaced apart from one another by a functional area distance 31 which is approximately 1.5 times the length of the foot 32 of the foot 18 in the longitudinal direction of the tool, e.g.
  • the foot 18 is arranged between the two partial areas 33 of the functional area 5 .
  • the shape of the shaft 2 in the partial areas 33 of the functional area 5 has a plurality of triangular recesses 19, the triangular recesses 19 have an essentially triangular geometry in the xz plane and completely “penetrate” the shank 2 of the knitting tool 1 in the width direction y.
  • the top surface 10 and the bottom surface 13 of the shaft 2 run essentially parallel to one another in the functional area 5 .
  • the figure 5 shows a knitting tool 1 according to the invention, which also includes a foot 18 and a functional area 5 having two partial areas 33 .
  • the shape of the shank 2 has a plurality of wavy recesses 20 in the partial areas 33, the wavy recesses 20 having a substantially wavy or arc-shaped geometry in the xz plane and completely "penetrating" the shank 2 of the knitting tool 1 in the width direction y.
  • One of the two partial areas 33 is arranged in front of the foot 18 in the longitudinal direction z of the tool, and the other of the two partial areas 33 is arranged behind the foot 18 in the longitudinal direction z of the tool.
  • the two sections 33 directly adjoin the foot 18 . In the longitudinal direction of the tool, there is therefore no distance between the partial areas 33 and the foot 18.
  • the figure 6 shows a knitting tool 1 according to the invention, which includes a foot 18 and a guide area 5, wherein the guide area 5 includes two sub-areas 33.
  • the shank 2 In its guide area 5, the shank 2 has subsections 7, in which the shank 2 and the line of gravity 4 essentially run in a straight line and are inclined at a constant angle to the longitudinal direction z of the tool - the amount of the slope of the line of gravity 4 is therefore greater than 0.
  • the cover surface 10 of the shaft 2 has a dirt nose 21 in each case.
  • the bottom surface 13 of the shaft 2 has a dirt nose 21 in each case.
  • the cover surface 10 of the shank 2 has a slope which has a local maximum in front of the local maximum 14 of the center of gravity line 4 .
  • the bottom surface 13 of the shank 2 has a gradient which has a local minimum in front of the local minimum 15 of the center of gravity line 4 .
  • the top surface 10 or bottom surface 13 is therefore more inclined in relation to the tool longitudinal direction z - it therefore has a greater gradient than the adjoining subsection 7 of the shaft 2 in terms of amount Dirt transport in the negative tool longitudinal direction z. This keeps the dirt away from the part of the knitting tool 1 that includes the stitch-forming element 3 . Possible contamination of the stitches formed and the textile is reduced.
  • the figure 7 shows the principle according to which the "self-cleaning" of the knitting tool takes place, as an example in three sub-steps.
  • substep a) there is dirt 23 in the operating area 24 of the knitting tool 1.
  • the dirt 23 can be composed of a large number of fibers, dust particles and abrasion that are not connected to one another.
  • the centroid line 4 is not shown in this figure for the sake of clarity, but obviously runs between local maxima 14 and minima 15 with a gradient that is greater than 0.
  • step b) the figure 7 the knitting tool 1 is shown during a forward movement 25 .
  • step c) of figure 7 the knitting tool 1 is shown during a backward movement 26 . Due to the movement of the knitting tool 1 and the rising center of gravity line 4, the dirt 23 is pushed in the negative tool longitudinal direction z and height direction x.
  • the knitting tools 1 are arranged in a knitting machine in such a way that the longitudinal direction z of the tool is directed upright and the gravitational acceleration g thus points in the negative longitudinal direction z of the tool.
  • the dirt 23 protruding from the operating area 24 is "removed" in all embodiments of the teaching according to the invention by the movement of the knitting tool 1 relative to the cam part 29 or a dial (when the knitting tools are arranged horizontally). The soiling of the knitting tool 1 and the knitting device 27 are thus reduced.
  • the figure 8 shows a portion of a knitting device 27, which includes three needle channels 28.
  • the Indian figure 8 left of the three needle channels 28 is equipped with a knitting tool 1 - in this case a knitting needle, the stitch-forming element 3 is a hook.
  • the needle channel 28 in the middle and on the right in the figure are not equipped with a knitting tool 1 equipped in order to be able to show the needle channel 28 better. All needle channels 28 are usually equipped with a knitting tool 1 in the knitting operation.
  • the knitting tool 1 includes a foot 18 which is raised in the height direction x relative to the rest of the knitting tool 1 and the needle channel 28 .
  • the figure 9 shows a knitting tool 1 and four cam parts 29, each of which includes a cam cam 30.
  • Feet 18 of knitting tools 1 can engage in each of the four lock curves and initiate a movement in the longitudinal direction of the tool in the respective knitting tool 1 , which movement results from a relative movement of the knitting tool 1 to the lock part 29 .
  • the cam part 29 is shown rotated by 90° about the longitudinal tool axis z. In the correct installation position, the recesses of the cam locks 30 are actually open in the direction of the negative vertical direction x, so that the foot 18 of the knitting tool pointing in the vertical direction x can engage in one of the cam locks 30 .
  • the center of gravity line 4 of the knitting tool 1 has two local maxima 14, at whose position the highest points of the cover surface 10 in the positive height direction x are also located. For the sake of clarity, not the entire center of gravity line 4 is shown in the figure, but only its two local maxima 14. These highest points of the cover surface 10 are spaced from the lock curves 30 in the tool longitudinal direction z by a safety distance 38 that is greater than zero. This prevents the shank 2 of the knitting tool 1 from unintentionally "hooking" into one of the locking cams 30 at these points and influencing the drive movement of the knitting tool 1 or causing the knitting tool 1 to jam.
  • the figure 10 shows the plan view of a knitting device 27, which includes three needle channels 28.
  • a knitting tool 1 is arranged in each of the three needle channels 28 and comprises a functional area 5 which has two partial areas 33 .
  • the upper and the lower of the three knitting tools 1 are shown in a driven-out state. They show two different variants of an expelled state. In a knitting movement there is only one cast out state. In the figure 10 Both variants are shown in one figure.
  • a knitting tool In the driven-out state, a knitting tool is in the position of the knitting movement that is deflected furthest in the positive tool longitudinal direction z.
  • the functional area 5 of the knitting tool 1 is completely accommodated in the upper needle channel 28 and has an edge distance 35 from the front edge of the needle channel 28.
  • the middle of the three knitting tools 1 is shown in a retracted state. It is therefore in the position of the knitting movement that is deflected furthest in the negative tool longitudinal direction z.
  • the distance between the stitch-forming elements 3 in the figure 10 middle and upper knitting tool 1 in the tool longitudinal direction z corresponds to the stroke 34 of the knitting movement.
  • the bottom knitting tool 1 in the figure is shown in a second variant of the driven-out state. In this case, the magnitude of the lift 34 is so large that the functional area 5 leaves the needle channel 28 in the knitting operation. At least 80% of the extension of the functional area 5 of the knitting tool 1 in the tool longitudinal direction z is always within the groove 28 during the knitting operation.
  • the figure 11 shows a sectional view of a knitting device 27.
  • the section is in the xz plane and goes through a needle channel 28 equipped with a knitting tool 1.
  • the upper edge 36 of the needle channel 28 is at the height distance 37 from the highest point 39 of the cover surface 10 of the knitting tool 1 - and thus also the shaft 2 - spaced.
  • the upper edge 36 is higher in the positive vertical direction x than the highest point of the cover surface 10.
  • Advantageous for all embodiments of the invention is also a needle channel 28 whose upper edge 36 is in the positive vertical direction x at the same height as the highest point of the cover surface 10 In this case, the vertical distance 37 would be zero.

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  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (16)

  1. Outil de tricotage (1) présentant les caractéristiques suivantes :
    - une tige (2), qui s'étend principalement dans une direction de longueur d'outil (z), dans laquelle l'outil de tricotage (1) est déplacé lors de l'opération de tricotage,
    - la tige (2) présentant en chaque point de son extension longitudinale une surface de section transversale (8) s'étendant transversalement à la direction de longueur d'outil (z), qui est définie par sa direction de largeur (y) et de hauteur (x),
    - chacune de ces surfaces de section transversale (8) présentant un centre de gravité de surface (9), par lequel passe une ligne de centre de gravité imaginaire (4), qui relie entre eux les centres de gravité de surface (9) de toutes les surfaces de section transversale (8) le long de la direction de longueur d'outil (z),
    - la tige (2) présentant au moins une zone fonctionnelle (5),
    - dans laquelle la ligne de centre de gravité (4) change de hauteur,
    - dans laquelle la hauteur de la surface de section transversale (8) en tout point de l'extension longitudinale de la zone fonctionnelle (5) est inférieure à la hauteur de tige (6) à l'intérieur de la zone fonctionnelle (5), qui est la hauteur entre le point le plus bas dans la direction de hauteur (x) et le point le plus haut dans la direction de hauteur (x) de la tige (2) à l'intérieur de sa zone fonctionnelle (5),
    - la ligne de centre de gravité (4) changeant de hauteur de telle sorte que le tracé de la ligne de centre de gravité (4), vu dans un plan x-z, présente un tracé oscillant,
    - la zone fonctionnelle (5) présentant des sous-sections (7) dans lesquelles le montant de la pente de la ligne de centre de gravité (4) est compris entre 0 et ∞,
    caractérisé
    en ce que la zone fonctionnelle (5) présente une extension longitudinale qui représente plus de 20 %, mais de manière davantage préférée plus de 25 % de l'extension longitudinale de l'ensemble de l'outil de tricotage (1).
  2. Outil de tricotage (1) selon la revendication précédente,
    caractérisé en ce que
    l'outil de tricotage (1) présente au moins un pied (18).
  3. Outil de tricotage (1) selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce que la zone fonctionnelle (5) se divise en au moins deux zones partielles (33) qui présentent chacune des sous-sections (7) dans lesquelles le montant de la pente de la ligne de centre de gravité (4) est compris entre 0 et ∞,
    et en ce que ces zones partielles (33) sont espacées les unes des autres dans la direction de longueur d'outil (z) .
  4. Outil de tricotage (1) selon la revendication précédente,
    caractérisé en ce que
    l'outil de tricotage (1) présente au moins une zone partielle (33) de la zone fonctionnelle (5) qui est située en amont du pied (18) dans la direction de longueur d'outil (z) et au moins une zone partielle (33) de la zone fonctionnelle (5) qui est située en aval du pied dans la direction de longueur d'outil (z).
  5. Outil de tricotage (1) selon l'une quelconque des deux revendications précédentes,
    caractérisé en ce que
    au moins une zone partielle (33) - de préférence toutefois deux zones partielles (33) - de la zone fonctionnelle (5) se raccorde directement au pied (18) ou présente par rapport au pied (18) uniquement une distance dans la direction de longueur d'outil (z) qui est inférieure ou égale à 10 % de l'extension longitudinale de l'ensemble de l'outil de tricotage.
  6. Outil de tricotage (1) selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce que la zone fonctionnelle (5) présente au moins un extremum local - minimum (15) ou maximum (14) - de la hauteur de la ligne de centre de gravité (4),
    et en ce que la pente de la ligne de centre de gravité à cet au moins un extremum local est de 0.
  7. Outil de tricotage (1) selon la revendication précédente,
    caractérisé en ce que
    la surface de la tige (2) orientée dans la direction de hauteur positive (x) de l'outil de tricotage (1) - la surface de recouvrement (10) - présente la même hauteur dans la direction de longueur d'outil (z) aux emplacements d'au moins deux maxima locaux (14) de la ligne de centre de gravité (4) et/ou la surface de la tige (2) orientée dans la direction de hauteur négative (x) de l'outil de tricotage (1) - la surface de fond (13) - présente la même hauteur aux emplacements d'au moins deux minima locaux (15) de la ligne de centre de gravité (4) .
  8. Outil de tricotage (1) selon l'une quelconque des deux revendications précédentes,
    caractérisé en ce que
    au moins l'une des surfaces latérales de la tige (2) orientée dans la direction de largeur (y) est en relief à l'emplacement d'au moins un extremum local (14) par rapport à une grande partie de la zone fonctionnelle (5) dans la direction de largeur (y).
  9. Outil de tricotage (1) selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce que la tige (2) est espacée de la hauteur de tige minimale (11) de la zone fonctionnelle (5) aux emplacements des maxima locaux (14) de la ligne de centre de gravité (4),
    et en ce que la tige (2) est espacée de la hauteur de tige maximale (12) de la zone fonctionnelle (5) aux emplacements des minima locaux (15) de la ligne de centre de gravité (4).
  10. Outil de tricotage (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    au moins une zone partielle (33) de la zone fonctionnelle (5) comprend au moins un évidement (19) de forme triangulaire dans le plan x-z et/ou au moins un évidement (20) de forme ondulée, qui traverse la zone fonctionnelle (5) dans la direction de largeur (y).
  11. Outil de tricotage (1) selon l'une quelconque des revendications précédentes,
    caractérisé
    en ce que la surface de la tige (2) orientée dans la direction de hauteur positive (x) de l'outil de tricotage (1) - la surface de recouvrement (10) - présente, dans la direction de longueur d'outil positive (z) orientée dans la direction de sortie d'outil, un tracé de pente qui a un maximum de pente local avant au moins un maximum local (14) de la hauteur de la ligne de centre de gravité, et/ou
    en ce que la surface de la tige (2) orientée dans la direction de hauteur négative (x) de l'outil de tricotage (1) - la surface de fond (13) - présente, dans la direction de longueur d'outil positive (z) orientée dans la direction de sortie d'outil, un tracé de pente qui a un minimum de pente local avant au moins un minimum local (15) de la hauteur de la ligne de centre de gravité (4).
  12. Outil de tricotage (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la surface de la tige (2) orientée dans la direction de hauteur positive (x) de l'outil de tricotage (1) - la surface de recouvrement (10) - et la surface de la tige (2) orientée dans la direction de hauteur négative (x) de l'outil de tricotage (1) - la surface de fond (13) - sont essentiellement parallèles entre elles dans les sous-sections (7) de la zone fonctionnelle (5).
  13. Dispositif de tricotage (27) comprenant au moins un canal d'aiguille (28), qui est adapté pour recevoir et guider en fonctionnement un outil de tricotage (1), et au moins un outil de tricotage (1) selon la revendication 1.
  14. Dispositif de tricotage (27) selon la revendication précédente,
    caractérisé en ce que
    - la longueur du canal d'aiguille (28) dans la direction de longueur d'outil (z) de l'outil de tricotage (1),
    - l'extension de la zone fonctionnelle (5) dans la direction de longueur d'outil (z) de l'outil de tricotage (1)
    - et le montant de la course (34) du mouvement de tricotage de l'outil de tricotage (1) lors de l'opération de tricotage
    sont adaptés les uns aux autres de telle sorte qu'au moins 80 %, de préférence 90 %, mais de manière davantage préférée 100 % de l'extension de la zone fonctionnelle (5) de l'outil de tricotage (1) dans sa direction de longueur d'outil (z) ne quitte pas le canal d'aiguille (28) pendant l'opération de tricotage.
  15. Dispositif de tricotage (27) selon l'une quelconque des revendications 13 à 14 précédentes,
    caractérisé en ce que
    le bord supérieur (36) du canal d'aiguille (28) est espacé, dans la direction de hauteur (x), de 0,5 mm au maximum, mais de manière davantage préférée de 0,3 mm au maximum, de l'emplacement le plus haut (39) de la surface de la tige orientée dans la direction de hauteur positive (x) de l'outil de tricotage (1)- c'est-à-dire la surface de recouvrement (10).
  16. Dispositif de tricotage (27) selon l'une quelconque des revendications 13 à 15 précédentes,
    caractérisé
    en ce que l'outil de tricotage (1) présente un pied (18) qui est en relief par rapport à la zone fonctionnelle (5) dans la direction de hauteur positive (x),
    et en ce que le pied (18) s'engage dans un évidement du dispositif de tricotage (27) - la came de serrure (30),
    et en ce que la surface de la tige (2) orientée dans la direction de hauteur positive (x) de l'outil de tricotage (1) - la surface de recouvrement (10) - est espacée de la came de serrure (30) dans la direction de longueur d'outil (z) à son emplacement le plus haut (39) dans la direction de hauteur positive (x).
EP20214742.7A 2020-12-16 2020-12-16 Outil à tricoter Active EP4015690B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
PT202147427T PT4015690T (pt) 2020-12-16 2020-12-16 Ferramenta de tricotar
EP20214742.7A EP4015690B1 (fr) 2020-12-16 2020-12-16 Outil à tricoter
DE102021119011.8A DE102021119011A1 (de) 2020-12-16 2021-07-22 Strickwerkzeug
PCT/EP2021/081984 WO2022128297A1 (fr) 2020-12-16 2021-11-17 Outil de tricotage
JP2023534709A JP2024500337A (ja) 2020-12-16 2021-11-17 編み具
EP21815451.6A EP4263925A1 (fr) 2020-12-16 2021-11-17 Outil de tricotage
KR1020237013304A KR20230119108A (ko) 2020-12-16 2021-11-17 편직 도구
CN202180085416.6A CN116648534A (zh) 2020-12-16 2021-11-17 编织工具
US18/267,934 US20240052537A1 (en) 2020-12-16 2021-11-17 Knitting tool
TW110144327A TW202225511A (zh) 2020-12-16 2021-11-29 編織工具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20214742.7A EP4015690B1 (fr) 2020-12-16 2020-12-16 Outil à tricoter

Publications (2)

Publication Number Publication Date
EP4015690A1 EP4015690A1 (fr) 2022-06-22
EP4015690B1 true EP4015690B1 (fr) 2023-02-08

Family

ID=73855177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20214742.7A Active EP4015690B1 (fr) 2020-12-16 2020-12-16 Outil à tricoter

Country Status (4)

Country Link
EP (1) EP4015690B1 (fr)
CN (1) CN116648534A (fr)
DE (1) DE102021119011A1 (fr)
PT (1) PT4015690T (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH575489A5 (fr) * 1974-02-05 1976-05-14 Agula Sa
CH650292A5 (de) * 1981-05-14 1985-07-15 Textilma Ag Maschenbildungseinheit fuer strickmaschine.
JPS61239065A (ja) * 1985-04-12 1986-10-24 福原ニ−ドル株式会社 丸編機用のメリヤス板針およびその製造方法
WO2006061989A1 (fr) 2004-12-07 2006-06-15 Fukuhara Needle Co., Ltd. Piece pour metier a tricoter circulaire
FR2941710B1 (fr) * 2009-02-05 2011-03-18 Airbus France Procede d'assemblage par couture d'elements fibreux et dispositif pour sa mise en oeuvre.
EP2927360B1 (fr) * 2014-04-03 2017-03-08 Groz-Beckert KG Outil à tricot pour machines à tricoter

Also Published As

Publication number Publication date
DE102021119011A1 (de) 2022-06-23
PT4015690T (pt) 2023-03-06
CN116648534A (zh) 2023-08-25
EP4015690A1 (fr) 2022-06-22

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