How to replace the tool bar and tool

Abstract

To provide a knitting tool bar capable of shortening the time of setting and maintenance, and a method for replacing the knitting tool of the knitting tool bar.SOLUTION: A knitting tool bar 1 according to the invention which moves a first set of knitting tools 3 includes at least one knitting tool carrier 2 for receiving a subset of the first set of knitting tools 3. The at least one knitting tool carrier 2 is removably coupled to the knitting tool bar 1. The knitting tool bar 1 further includes at least one fixed arrangement 5 for fixing the at least one knitting tool carrier 2 to the knitting tool bar 1. The knitting tool bar 1 is characterized in that the fixed arrangement 5 includes at least a second set of n covers 4 suitable and arranged (and / or placeable) for fixing at least one knitting tool carrier 2, n is a natural number of 2 or more, at least one knitting tool carrier 2 is already fixable by a subset of the second set of n covers 4, and the subset includes at most n-1 covers 4.SELECTED DRAWING: Figure 1

Description

Background Art

[0001] Warp knitting machines for producing warp knitted fabrics have been known for many years. Such machines typically comprise a number of knitting tools (e.g. warp knitting needles, yarn guide elements, sliders, sinkers), which have knitting means. These knitting means of the above mentioned knitting tools are attached to the knitting tool bar along their longitudinal direction and functionally cooperate during the loop formation process. The knitting tool bar is drivable by a bar carrier and a lever shaft and performs a pivoting movement about the axis of rotation of the lever shaft. The term "knitting means" refers to the area of ​​the knitting tool which is functionally involved in the loop formation process and which is in direct contact with the yarn at least intermittently. In the case of a warp knitting needle shaped like a whisker needle, the knitting means is for example a hook. In its working position, the knitting means is oriented in a working direction extending at right angles to the longitudinal direction of the knitting tool bar. The knitting tools are typically removably connected to the knitting tool bar, since they wear out and have to be replaced periodically. The knitting tools of the same type are mounted on the knitting tool bar next to each other in the longitudinal direction (i.e. in a row) at equal intervals and are adjusted relative to each other so that they can cooperate without collisions with the knitting tools of other knitting tool bars during the loop formation process. To set up the warp knitting machine with the knitting tools and to adjust them to each other, it is necessary to stop the warp knitting machine. It would therefore be preferable if the knitting tools could be mounted and adjusted in such a way that the set-up time is reduced. In this connection, a known solution is to combine several knitting tools of the same type in modules. In these modules, the knitting tools are pre-aligned, spaced apart by the required distance and permanently molded in the cast material. In this way, when the module is mounted on the knitting tool bar, all the knitting tools of the module can be jointly adjusted to be compatible with the knitting tools mounted on the other bars. This allows the set-up time to be reduced. Disadvantages include the high weight of the cast metal and the fact that if one knitting tool wears out or fails, the entire module must always be replaced, even if the other knitting tools of the module are usable. Also, when a new module is mounted, it must be adjusted again.Instead of a module in which the knitting machine is permanently integrated, a knitting tool carrier is known which has several recesses arranged next to each other in the longitudinal direction. A knitting tool is received in each recess and is "pressed" onto the knitting tool carrier by a cover and a fixing arrangement. The knitting tools are removably attached to the respective knitting tool carrier. If the knitting tools wear out, they can be replaced separately.

[0002] US Patent 1848293 shows a bar with a tool carrier (needle spacer bar 4) which is cast integrally into the bar during the initial moulding of the bar. This aims to provide a stronger bar and a stronger bond between the bar and the tool carrier than would be possible with screws or bolts. The bar and tool carrier are integral, into which the tool is inserted and held by a clamping plate 3.

[0003] US 2254201 shows a bar with an integral needle bed. The needle bed includes a groove into which the knitting tool is inserted. The knitting tool is fixed in place by a number of clamping members 30. The small number of knitting tools that each clamping member contacts makes it easy to repair or replace the knitting tool. The parting or joining lines between successive clamping members run obliquely to the longitudinal direction of the knitting tool (in other words, not parallel to the knitting tool). Thus, a part of the knitting tool is clamped by two clamping members at the same time.

[0004] US Pat. No. 5,453,146 describes a method for producing a bar consisting of a support member 2 and a carrier 1. First, the support member is bonded to the carrier. The support member is then provided with grooves for inserting the knitting tools and divided into a number of segments. The individual segments of the support member are spaced apart from one another in the region of the dividing lines by the width of the dividing lines. The dividing lines between the segments run through the grooves and are narrower than the width of the grooves, so that the knitting tools can also be inserted into the grooves through which the dividing lines run.

[0005] EP 3354781 A1 describes a bar on whose body a knitting tool carrier is removably attached by a first fastening arrangement. The knitting tools are removably attached to the knitting tool carrier by a cover member and a second fastening arrangement. When the second fastening arrangement is released, individual knitting tools can be replaced while the knitting tool carrier remains attached to the bar by the first fastening arrangement. When the first fastening arrangement is released, the knitting tool carrier, together with the knitting tools, is adjusted relative to the knitting tools of the other bar or is completely replaced. The knitting tool tools can be replaced individually without readjusting the knitting tool carrier. The use of two separate fastening arrangements increases the weight and, in particular in the case of a pivoting movement about the axis of rotation of the lever shaft, increases the rotating mass.

[0006] US 2902847 describes a weaving tool carrier as well as associated weaving tools and their arrangement on a bar. The weaving tools and the weaving tool carrier are removably attached to the bar by means of a cover member and a single co-fixing arrangement. Each weaving tool carrier of the bar is functionally connected by only one cover member. Releasing the fixation of the cover member allows replacement of one weaving tool or the entire weaving tool carrier. In both cases, before re-clamping the fixation arrangement, all the weaving tool carriers that were clamped by the released cover member of the fixation arrangement must be realigned so that their weaving tools cooperate without collision with the weaving tools of the other bars. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] U.S. Patent No. 1,848,293 [Patent Document 2] U.S. Patent No. 2,254,201 [Patent Document 3] U.S. Pat. No. 5,453,146 [Patent Document 4] European Patent Application Publication No. 3354781 [Patent Document 5] U.S. Patent No. 2,902,847 Summary of the Invention [Problem to be solved by the invention]

[0008] SUMMARY OF THE PRESENT EMBODIMENT It is an object of the present invention to provide a method for changing a tool bar and tools on the tool bar which allows high speed operation of a warp knitting machine and reduces setup and maintenance times. [Means for solving the problem]

[0009] The above mentioned objects are achieved according to the present invention by means of claims 1 and 13. The present invention provides a knitting tool bar for moving a first set of knitting tools which, in their working position, are arrangeable in a row adjacent to one another in the longitudinal direction of the knitting tool bar, with their knitting means pointing in a working direction perpendicular to the longitudinal direction of the knitting tool bar, in which at least one knitting tool carrier for receiving a subset of the first set of knitting tools is removably coupled to the knitting tool bar, and at least one fastening arrangement fastens the at least one knitting tool carrier to the knitting tool bar. The knitting tool bar according to the invention is characterized in that the fastening arrangement comprises at least a second set of n covers suitable for fastening at least one knitting tool carrier and arranged and / or disposable for fastening at least one knitting tool carrier, n being a natural number greater than or equal to 2, and at least one knitting tool carrier is already fastenable by a subset of the second set of n covers, this subset comprising at most n-1 covers. The number n can be any number of a set N of numbers such that:

number

[0010] Cover width b D and the width of the knitting tool carrier b W The ratio of b D / b W <= 1 Advantageously, and preferably b D / b W ≦0.5 The width of the cover and the width of the tool carrier extend in the longitudinal direction of the tool bar. D / b W = 1, the cover can be positioned relative to the knitting carrier in such a way that one cover overlaps each half of two adjacent knitting carriers, thereby making it possible to fix both. Therefore, this ratio is considered to be advantageous. If the ratio of the width of the cover to the width of the knitting carrier is b D / b W If ≦0.5, further advantages are obtained. By suitable arrangement of the covers, one knitting tool carrier can be fixed with at least three covers, each of which at least partially overlaps the knitting tool carrier. In particular, if a subset of knitting tools can be fixed simultaneously with two covers, it is ensured that even if the other two covers fixing this subset of knitting tools are released, for example to replace one of the subset of knitting tools, the knitting tool carrier is still fixed with the third cover.

[0011] It is also advantageous if at least one cover of at least one fastening arrangement can fasten at least a second knitting tool carrier. This allows a wider cover to be used than if one cover always fastens only one knitting tool carrier. For this purpose, the cover is arranged relative to the knitting tool carrier in such a way that the cover which overlaps and fastens the knitting tool carrier in its end region also overlaps at least partially with a second adjacent knitting tool carrier and fastens this second adjacent knitting tool carrier as well. The use of a wider cover allows the setting work of the knitting tool bar to be reduced.

[0012] Advantageously, the knitting tool bar comprises a longitudinal recess extending in the longitudinal direction of the knitting tool bar and at least one knitting tool carrier comprises a longitudinal protrusion extending substantially in the longitudinal direction of the knitting tool bar, preferably which protrusion can be inserted in a form-locking manner into the longitudinal recess (e.g. a groove running in the longitudinal direction of the knitting tool bar). The form-locking arrangement of the knitting tool carrier on the knitting tool bar facilitates the alignment of the knitting tool carrier on the knitting tool bar. The knitting tool carrier can then be adjusted in the longitudinal direction of the knitting tool bar relative to other knitting tool carriers and knitting tools. Meanwhile, the position of the needles in the working direction is determined by form fit.

[0013] Further advantages are obtained if the at least one cover and / or the at least one tool carrier and / or the tool bar are substantially made of a fiber-reinforced polymer. A fiber-reinforced polymer comprising carbon and / or glass fibers is advantageous. A fiber-reinforced polymer consisting of both a first set of fibers with a first fiber orientation substantially oriented in the working direction of the tool and a second set of fibers with a second fiber orientation substantially oriented in the longitudinal direction of the tool bar is particularly advantageous. The addition of fibers with further fiber orientations can also have a positive effect on the mechanical and thermal properties. Covers, tool carriers and tools bars of this kind, designed taking into account the material requirements and the stresses acting on the parts, are lighter than parts made of metallic materials. This weight reduction allows the knitting machine to operate at higher working speeds.

[0014] It is further advantageous if the knitting tool carrier comprises recesses (preferably grooves) extending in the working direction of the knitting tools and suitable for removably receiving the knitting tools, which recesses are spaced apart from one another in the longitudinal direction of the knitting tool bar by protrusions (preferably groove walls, if the recesses are grooves). Knitting tools are advantageously arranged in the recesses of the knitting tool carrier in a form-lock manner. A protrusion of the knitting tool carrier which is adjacent on both longitudinal sides to a recess of the same knitting tool carrier is an inner protrusion. In contrast, an outer protrusion is a protrusion of the knitting tool carrier which is adjacent on only one longitudinal side to a recess of the same knitting tool carrier. On the second longitudinal side, the outer protrusion forms the end of the knitting tool carrier. The inner and outer protrusions can be configured as groove walls, as with common protrusions. A groove wall in this case is a protrusion that limits the groove. It is particularly advantageous if, in the longitudinal direction of the knitting tool bar, the width of at least one inner protrusion, i.e. the inner protrusion width, defines the distance between at least two adjacent knitting tools. When changing the tool, the time required to adjust and align the new tool in the tool carrier is thus reduced.

[0015] Advantageously, the at least one fastening arrangement comprises at least one cover with which the knitting tool can be fixed in a recess of the knitting tool carrier, the knitting tool protruding in the height direction beyond the projection of the knitting tool carrier. The cover thereby fastens the knitting tool in the recess of the knitting tool carrier. The knitting tool thereby fastens the knitting tool carrier to the knitting tool bar. The cover only rests on the cover support surfaces of the knitting tool. These surfaces constitute the knitting tool surfaces that limit the knitting tool in the direction of the cover when the knitting tool is in the working position. Thus, no separate fastening method is required for fastening the knitting tool. As a result, the weight is reduced and the knitting machine can operate faster.

[0016] It is furthermore advantageous if at least a subset of the knitting tools can be fixed in the recesses of at least one knitting tool carrier by means of two covers. In particular, in the end regions of the covers, it may happen that, due to the gaps between adjacent covers, only a part of the cover support surface of the individual knitting tools comes into contact with one of the covers. As a result, the knitting tools may no longer be securely fixed. In particular, if the knitting tools that are fixed by the end regions of the covers can be additionally fixed at least partially by means of a second cover, it is ensured that these knitting tools are also securely fixed.

[0017] It is advantageous if the cover has at least one flank of the cover and a flank angle of more than 25 degrees and less than 45 degrees with the working direction. The height direction is perpendicular to the longitudinal direction of the bar of the knitting tool and perpendicular to the working direction. The cover support surface of the knitting tool in the end region of such a cover is therefore always in partial contact with a second cover of such shape and is therefore additionally fixed by this second cover. It is further advantageous if the flank angle is between 30 degrees and 40 degrees, in particular 35 degrees. In particular, it is advantageous to select the flank angle in such a way that a cover has a parallelogram and / or trapezoid shape in the plane determined by the longitudinal direction of the knitting tool bar and the working direction of the knitting tool. Parallelogram covers can be arranged next to each other with the same orientation. Trapezoidal covers, on the other hand, can be arranged rotated by 180° with respect to each other around the height direction.

[0018] Further advantages are obtained if, in the longitudinal direction of the knitting tool bar, there is a gap between adjacent knitting tool carriers with a gap width s. 0.005mm≦s≦0.5mm It is useful to have a gap width that satisfies the following: 0.01mm≦s≦0.1mm This is particularly advantageous when the gap allows the knitting tool carriers on the knitting tool bars to be moved longitudinally relative to one another, at least within the gap width, so that they can be aligned or adjusted relative to one another, thereby allowing small manufacturing errors to be corrected and allowing the knitting tools on different knitting tool bars to be positioned longitudinally relative to one another in a collision-free manner during the loop formation process.

[0019] A further advantage is that in the longitudinal direction of the knitting bar, the inner projections have a width b IV The outer projection has a width b AV These widths are related by the following formula: b AV =0.5·(b IV -s) The knitting tools are arranged on the knitting tool carrier at equal longitudinal intervals, with adjacent knitting tool carriers being separated by the above-mentioned gaps. Such a configuration of the projections facilitates adjustment of the knitting tools on the knitting tool carrier and the orientation of the knitting tool carrier relative to adjacent knitting tool carriers.

[0020] A further useful embodiment of the teaching according to the invention is a method for producing a knitting tool carrier having a width b W That is, the width b of the knitting tool carrier is W teeth, 25.4mm(1inch)≦b W ≦254 mm (10 inches) and more preferably, 76.2mm(3 inches)≦b W ≦152.4 mm (6 inches) Meet the following. A wider tool carrier has the advantage that more tools can be mounted on one tool carrier at a time, and therefore fewer tool carriers can be used to fully equip the tool bar than with a narrower tool carrier. This results in fewer tool carriers having to be oriented and adjusted, which in turn reduces the overall setup time. However, a narrower tool carrier has the advantage that it is smaller and lighter and therefore easier to handle. For this reason, the two size ranges mentioned above in particular are advantageous for tool widths.

[0021] Advantage is obtained by a method for replacing at least one knitting tool of a knitting tool bar, in which a first set of knitting tools, comprising at least one knitting tool, are aligned in a working position next to each other in the longitudinal direction of the knitting tool bar, in which the knitting means of the knitting tools are oriented in a working direction perpendicular to the longitudinal direction of the knitting tool bar, and a subset of the first set of knitting tools, comprising at least one knitting tool, is attached to a knitting tool carrier removably connecting this subset of knitting tools to the knitting tool bar, and at least one fastening arrangement fastens the at least one knitting tool carrier to the knitting tool bar, in which the fastening arrangement fastens the at least one knitting tool carrier with a second set of n covers, n being a natural number greater than or equal to 2, and in which at most n-1 covers are released in order to remove the at least one knitting tool and replace the at least one knitting tool with at least one other knitting tool. The fact that the knitting tool can be changed by only releasing n-1 covers provides the advantage that during the change the knitting tool carrier itself is fixed by at least one cover: the knitting tool carrier retains its position during the change and does not need to be readjusted after changing the knitting tool.

[0022] A further advantage is obtained in the method according to the invention if at least one knitting tool is replaced through a maintenance gap. A maintenance gap between the knitting tool carrier and at least one of the maximum n-1 released covers is formed when this cover is released. The maximum n-1 covers are released sufficiently to form a gap between the knitting tool carrier and the knitting tool that is large enough for the knitting tool to be replaced to pass through. The maintenance gap is advantageously adjusted to at least correspond to the maximum protruding height of the knitting tool. This ensures that the maintenance gap is large enough for the knitting tool to pass through. Depending on the shape of the knitting tool carrier, the knitting tool and the cover, it is also possible to replace the knitting tool through a maintenance gap that is smaller than the maximum protruding height of the knitting tool. In many knitting tool bars, an elastic insert is arranged between the cover and the knitting tool. In the case of such knitting tool bars, the maintenance gap is formed between the knitting tool carrier and the elastic insert.

[0023] Also advantageous is a method in which, after at least one knitting tool has been replaced, up to n-1 previously released covers are fastened again and a clamping force is generated which at least partially fastens at least one knitting tool carrier to the knitting tool bar. After the knitting tool has been replaced, the knitting tool bar must be returned to a state in which it can operate on the warp knitting machine. To that end, all n covers, together with the knitting tools and the knitting tool carrier, are reliably fastened to the knitting tool bar. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a cross-sectional view of a knitting tool bar 1 with a knitting tool carrier 2, a knitting tool 3 and a fixing arrangement 5. [Diagram 2] FIG. 2 shows a fixing arrangement 5 which includes three covers 4 , each of which includes two screws 6 and two perforated disks 7 . [Diagram 3] FIG. 3 is a detailed view of part A in FIG. 2, in which two knitting tool carriers 2 and a number of knitting tools 3 are shown. [Figure 4]FIG. 4 shows the cross-sectional view of FIG. 1 in a state where the knitting tool 3 has been replaced. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] FIG. 1 shows a cross-sectional view of a knitting tool bar 1 with a knitting tool carrier 2. The knitting tool carrier 2 has a longitudinal projection 17 which engages in a form-locking manner in a longitudinal recess 18 of the knitting tool bar 1. The cross-section shown is through a groove 11 of the knitting tool carrier 2. The groove 11 is surrounded by a groove wall 10. The knitting tool 3 has a hook-shaped knitting means 8 at its end facing the working direction and is arranged in the groove 11 which is not in the plane of the cross-sectional view. The knitting tool 3 protrudes in the height direction z beyond the groove wall 10. The fastening arrangement 5 comprises several covers 4 (in the cross-sectional view, the covers 4 are not visible except for one), several screws 6 and several perforated disks 7. The screws 6 generate a clamping force which clamps the covers 4 together with the elastic inserts 9, the knitting tools 3 and the knitting tool carrier 2 against the knitting tool bar 1 and holds them in place.

[0026] FIG. 2 shows a different view of the elements already shown in FIG. 1. The fixing arrangement 5 has the same cover width b D Each cover 4 has two screws 6 and two perforated disks 7. The width b D and the width of the knitting tool carrier b W In addition to the width ratios previously mentioned as being advantageous, the ratio of b D / b W >1 is also conceivable. In this case, however, the number of covers 4 and / or knitting tool carriers 2 is limited and is only advantageous depending on the maximum number of knitting tool carriers 2 and on a clever arrangement of the covers 4. The cover 4 has a cross section in the xy plane in the shape of a parallelogram, the flanks 20 of which are inclined away from the working direction y at a flank angle 19. The width b of the knitting tool carrier WAlso shown are three knitting tool carriers 2 with a . Two of the three knitting tool carriers 2 are incompletely shown, which is indicated in the drawing by their interrupted borders. All but one of the grooves 11 of the central knitting tool carrier 2 in FIG. 2 accommodates a knitting tool 3. The grooves 11 of the knitting tool carriers 2 on the right and left sides of FIG. 2 are empty, i.e. no knitting tool 3 is fitted. This view is for illustrative purposes only. In the operable state, all grooves 11 can accommodate a knitting tool 3. In the cover end region 21, it can be seen that one of the knitting tools 3 is held by two covers 4 out of the three covers 4 shown in FIG. 2. These are the central cover 4 and the left cover 4. Both of these two covers 4 are in contact with the respective cover support surfaces 12 of these knitting tools 3 in the end region 21.

[0027] FIG. 3 shows a detail of part A of FIG. 2. Two knitting tool carriers 2 and a gap s between the two knitting tool carriers 2 are shown. The knitting tool carrier 2 on the left side of FIG. 3 shows five grooves 11. Four of these grooves 11 house knitting tools 3 and one groove 11 is "empty". Both knitting tool carriers 2 are held in the area of ​​part A by a cover 4. Between the grooves 11, i.e. the knitting tools 3, there is a gap of width b of the inner projection. IV The inner protrusion 15 is shown having an outer protrusion width b AV The outer protrusion 16 has a width b AV Size and width of inner projection b IV The relationship between the magnitude of the

[0028] Figure 4 is a cross-sectional view of the knitting tool bar 1 in the same position as the cross-sectional view of figure 1, except that the cover 4 is not in its working position but in its waiting position and a maintenance gap 14 is present between the elastic insert 9 of the cover 4 and the bottom 24 of the groove of the knitting tool carrier 2. The bottom 24 of the groove limits the groove 11 in the height direction z. The knitting tool 3 is shown with its maximum protruding height 22, which in this embodiment is smaller than the height 23 of the maintenance gap. The knitting tool 3 can be removed from or inserted into the knitting tool carrier 2 through the maintenance gap 14 without the cover 4 having to be completely removed from the knitting tool bar 1. [Explanation of symbols]

[0029] 1: knitting tool bar, 2: knitting tool carrier, 3: knitting tool, 4: cover, 5: fastening arrangement, 6: screw, 7: perforated disk, 8: knitting means, 9: elastic insert, 10: projection / groove wall, 11: recess / groove, 12: cover support surface, 13: gap, 14: maintenance gap, 15: inner projection / inner groove wall, 16: outer projection / outer groove wall, 17: longitudinal projection, 18: longitudinal recess, 19: flank angle of cover 4, 20: flank of cover, 21: end area of ​​cover, 22: maximum projection height, 23: height of maintenance gap 14, 24: bottom of groove 11, x: longitudinal direction of knitting tool bar 1, y: working direction, z: height direction, b D : width of cover, b W : width of knitting tool carrier, s: gap width, b AV : Width of outer protrusion / Width of outer groove wall, b AV :Width of inner protrusion / Width of inner groove wall

Claims

1. A knitting tool bar (1) for moving a first set of knitting tools (3), comprising: In their working position, these knitting tools (3) can be arranged in a row next to each other in the longitudinal direction (x) of the knitting tool bar (1), The knitting means (8) of these knitting tools are oriented in a working direction (y) perpendicular to the longitudinal direction (x) of the knitting tool bar (1), at least one knitting tool carrier (2) for receiving a subset of the first set of knitting tools (3) is removably coupled to the knitting tool bar (1); At least one fastening arrangement (5) fastens at least one knitting tool carrier (2) to the knitting tool bar (1); the fastening arrangement (5) comprises at least a second set of n covers (4) suitable for fastening at least one knitting tool carrier (2) and arranged for fastening at least one knitting tool carrier (2), n being a natural number equal to or greater than 2; The knitting bar is characterized in that at least one knitting tool carrier (2) can already be fixed by a subset of a second set of n covers (4), this subset including at most n-1 covers (4).

2. At least one cover (4) has a width b of the cover extending in the longitudinal direction (x) of the knitting tool bar (1). Ｄ and the width b of the knitting tool carrier extending in the longitudinal direction (x) of the knitting tool bar (1). Ｗ The ratio of b Ｄ / b Ｗ ≦1 and preferably b Ｄ / b Ｗ ≦0.5 2. The knitting bar (1) according to claim 1, characterized in that

3. 3. A knitting tool bar (1) according to claim 1 or 2, characterized in that at least a second knitting tool carrier (2) can be fixed by at least one cover (4) of at least one fastening arrangement (5).

4. a longitudinal recess (18) extending in the longitudinal direction (x) of the knitting tool bar (1); At least one knitting tool carrier (2) comprises a longitudinal protrusion (17), which also extends substantially in the longitudinal direction (x), said protrusion comprising:

4. A knitting tool bar (1) according to any one of the preceding claims, characterized in that it is insertable into said longitudinal recesses (18).

5. 5. The knitting bar (1) according to any one of claims 1 to 4, characterized in that at least one cover (4), and / or at least one knitting tool carrier (2), and / or the knitting tool bar (1) are substantially made of fibre-reinforced polymer.

6. 6. A knitting tool bar (1) according to any one of claims 1 to 5, characterized in that at least one knitting tool carrier (2) comprises recesses (11), preferably grooves (11), extending in the working direction (y) of the knitting tools (3) and suitable for removably receiving the knitting tools (3), said recesses (11) being spaced apart from one another in the longitudinal direction (x) of the knitting tool bar (1) by projections (10), preferably groove walls (10) in the case of grooves (11).

7. 7. The knitting tool bar (1) according to claim 6, characterized in that the at least one fixing arrangement (5) comprises at least one cover (4) by means of which the knitting tool (3) can be fixed in the recess (11) of the at least one knitting tool carrier (2).

8. 8. The knitting tool bar (1) according to claim 7, characterized in that at least a part of the knitting tools (3) is fixable in said recess (11) of the at least one knitting tool carrier (2) by means of two covers (4).

9. 9. A knitting tool bar (1) according to any one of claims 1 to 8, characterized in that at least one cover flank (20) of at least one cover (4) forms a flank angle (19) with the working direction (y), the flank angle (19) being greater than 25 degrees and smaller than 45 degrees.

10. 10. A knitting tool bar (1) according to any one of the preceding claims, characterized in that between adjacent knitting tool carriers (2) there are gaps (13) in the longitudinal direction (x) with a gap width s.

11. At least one knitting tool carrier (2) has an inner projection (15) having a width b in the longitudinal direction (x) of the knitting tool bar (1). ＩＶ and the outer projection (16) has a width b ＡＶ and the widths of these are: b ＡＶ =0.5・(b ＩＶ -s) 11. A knitting bar (1) according to claim 10, characterized in that the knots are related by the formula:

12. The width b of the knitting tool carrier of at least one knitting tool carrier (2) Ｗ teeth, 25.4 mm (1 inch) ≦ b Ｗ ≦254 mm (10 inches) and preferably 76.2 mm (3 inches) ≦ b Ｗ ≦152.4 mm (6 inches) 12. A knitting bar (1) according to any one of claims 1 to 11, characterized in that

13. A method for replacing at least one knitting tool (3) of a knitting tool bar (1), comprising the steps of: A first set of knitting tools (3), including at least one knitting tool (3), is arranged in a row in its working position next to each other in the longitudinal direction (x) of the knitting tool bar (1); the knitting means (8) of the knitting tool (3) are oriented in a working direction (y) perpendicular to the longitudinal direction (x) of the knitting tool bar (1); a subset of the first set of knitting tools (3) including at least one knitting tool (3) is attached to a knitting tool carrier (2) that removably couples the subset of knitting tools (3) to the knitting tool bar (1); At least one fastening arrangement (5) fastens at least one knitting tool carrier (2) to the knitting tool bar (1); the fixing arrangement (5) fixes at least one knitting tool carrier (2) with a second set of n covers (4), n being a natural number equal to or greater than 2; A maximum of n-1 covers (4) are released to remove at least one knitting tool (3); A method, characterized in that at least one knitting tool (3) is exchanged for at least one other knitting tool (3).

14. At least one knitting tool (3) is replaced through a maintenance gap (14), 14. The method according to claim 13, characterized in that a maintenance gap (14) is formed between the knitting tool carrier (2) and at least one of the maximum n-1 covers (4) when said at least one cover is released.

15. After at least one knitting tool (3) has been replaced, up to n-1 previously released covers (4) are fastened again, 15. The method according to claim 14, characterized in that a clamping force is generated which at least partially fixes the at least one knitting tool carrier (2) to the knitting tool bar (1).

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