CN114059225A - Knitting tool bar and method for replacing knitting tools - Google Patents
Knitting tool bar and method for replacing knitting tools Download PDFInfo
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- CN114059225A CN114059225A CN202110871347.3A CN202110871347A CN114059225A CN 114059225 A CN114059225 A CN 114059225A CN 202110871347 A CN202110871347 A CN 202110871347A CN 114059225 A CN114059225 A CN 114059225A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/06—Needle bars; Sinker bars
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- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
A knitting tool bar (1) for moving a first set of knitting tools (3) comprises at least one knitting tool carrier (2) for receiving a subset of the first set of knitting tools (3). The braiding tool carrier (2) is releasably connected to a braiding tool rod (1). Furthermore, the knitting tool bar (1) comprises at least one fixing arrangement (5) for fixing the at least one knitting tool carrier (2) to the knitting tool bar (1). The braiding tool rod (1) according to the invention is characterized in that the fixing arrangement (5) comprises at least a second set of n covers (4) adapted and positioned-and/or positionable-for fixing the at least one braiding tool carrier (2), wherein the natural number n is larger than or equal to 2, and wherein the at least one braiding tool carrier (2) has been fixable by a subset of the second set of n covers (4), which subset comprises at most n-1 covers (4).
Description
Background
Warp knitting machines for producing warp knitted fabrics have been known for many years. Such machines generally comprise a plurality of knitting tools-for example, warp needles, thread guide elements, sliders and sinkers-which have knitting means. These knitting devices of the knitting tool described above, which are mounted on the knitting tool shaft in its longitudinal direction, cooperate functionally during the knitting process. The knitting tool bars can be driven via a bar carrier and a lever shaft and perform a swiveling movement about the axis of rotation of the lever shaft. The term "knitting device" refers to the area(s) of the knitting tool which functionally participate in the knitting process and which are in direct contact with the yarn at least intermittently. In the case of a warp knitting needle shaped like a pogo pin (hakenneadel), the knitting means is for example a hook. In its operating position, the knitting device points in a working direction extending at right angles to the longitudinal direction of the knitting tool bar. Braiding tools are typically releasably connected to the braiding tool shaft because they are subject to wear and must be replaced periodically. Knitting tools of the same kind are mounted one after the other in their longitudinal direction, i.e. in rows, equidistantly on knitting tool bars and are adjusted relative to the knitting tools of the other knitting tool bars so that they can cooperate without collision during the knitting process. In order to set up a warp knitting machine with knitting tools and to adjust these knitting tools relative to one another, the warp knitting machine must be stopped. It is therefore desirable to be able to mount and adjust the knitting tool in such a way that the set-up time is reduced. In this context, a known solution is to combine a plurality of knitting tools of similar type into a module. In these modules, the braiding tools are non-removably molded in a cast material, already aligned and spaced apart by the desired distance. During mounting of the module on the knitting tool bar, all knitting tools of the module can be adjusted jointly in this way to be compatible with knitting tools mounted on other bars. This reduces the setup time. Among the drawbacks are the heavy weight of the cast metal and the fact that the entire module must always be replaced in case one of its knitting tools is worn or defective-even if some of the other knitting tools of the module are still available. When a new module is installed, it must then be readjusted again. Instead of modules in which the knitting tools are cast non-removably, knitting tool carriers are known which have a plurality of recesses arranged side by side in the longitudinal direction, in each of which recesses a knitting tool is received and "pressed" onto the knitting tool carrier by means of a cover (Deckel) and a fixing arrangement. Each of the knitting tools is releasably mounted on a knitting tool carrier. If the knitting tool is worn, it can be replaced separately.
US1848293 shows a bar with a knitting tool carrier (needle spacer bar # 4), wherein the knitting tool carrier is integrally cast into the bar during one-shot forming of the bar. The intention is to provide a stronger bar and a stronger connection between the bar and the braiding tool carrier than in the case of a threaded or bolted connection. The rod and braiding tool carrier form an integral unit into which the braiding tool is inserted and held with clamping plate # 3.
US2254201 shows a bar with an integrated needle bed. The needle bed comprises a recess into which the knitting tool is inserted. The braiding tool is locked in place by a plurality of gripping members # 30. Each of these gripping members is in contact with a small number of knitting tools, thereby facilitating repair or replacement thereof. The parting lines or joining lines between adjacent clamping members extend obliquely with respect to the longitudinal direction of the braiding tool-in other words they are not parallel to the braiding tool. As a result, some of the braiding tools are clamped simultaneously by two clamping members.
US5453146 describes a method of manufacturing a bar made of support member # 2 and carrier # 1. The support member is first coupled to the carrier. The support member is then provided with a recess for insertion of a knitting tool and divided into a plurality of segments. The individual segments of the support member are spaced apart from one another by their width in the region of the separation line. The parting lines between the segments extend within the grooves and are narrower than the groove width so that the knitting tool can also be inserted into those grooves through which the parting lines extend.
EP3354781a1 describes a bar on the body of which a knitting tool carrier is releasably mounted by means of a first fixed arrangement. The braiding tool is releasably mounted on the braiding tool carrier by means of the cover member and the second fixed arrangement. When the second fixing arrangement is released, the individual knitting tools can be exchanged while the knitting tool carrier remains attached to the bar by means of the first fixing arrangement. If the first fixing arrangement is released, the knitting tool carrier together with the knitting tool can be adjusted relative to the knitting tools of the other bars or otherwise completely replaced. The knitting tools can be replaced individually without having to readjust the knitting tool carrier. The use of two separate fixed arrangements increases the weight, in particular the rotational mass in the case of a swiveling motion about the rotational axis of the lever shaft.
US2902847A describes a knitting tool carrier and associated knitting tool and its arrangement on a bar. The braiding tool and the braiding tool carrier are releasably mounted on the rod by means of the cover member and the single joint fixing arrangement. Each braiding tool carrier of the rod is functionally connected with only one cover member. Releasing the fixing arrangement for its associated cover member enables replacement of either a single knitting tool or the entire knitting tool carrier. Before the fixed arrangement can be reclamped, it is necessary in both cases to readjust all knitting tool carriers clamped by the cover member of the released fixed arrangement so that their knitting tools cooperate without collision with the knitting tools of the other bars.
Disclosure of Invention
It is therefore an object of the present invention to provide a knitting tool bar and a method for replacing a knitting tool of a knitting tool bar that permits a warp knitting machine to operate at high speed and also provides short setup and maintenance times.
According to the invention, this object is achieved by means of claims 1 and 13. A knitting tool bar for moving a first group of knitting tools which, in their working position, can be arranged one behind the other in a row in the longitudinal direction of the knitting tool bar and whose knitting means point in a working direction extending at right angles to the longitudinal direction of the knitting tool bar, having the following features:
-at least one braiding tool carrier for receiving a subset of a first set of braiding tools, the braiding tool carrier being releasably connected to a braiding tool bar,
-at least one fixing arrangement for fixing the at least one braiding tool carrier to a braiding tool bar.
The weaving tool bar according to the invention is characterized in that the fixing arrangement comprises at least a second set n of covers adapted and positioned-and/or positionable-for fixing the at least one weaving tool carrier, wherein the natural number n is larger than or equal to 2, and wherein the at least one weaving tool carrier has been fixable by a subset of the second set n of covers, which subset comprises at most n-1 covers. The number N can be any number in the number set N for which the following applies:
the cover is configured for gripping the braiding tool carrier and thereby securing it to the braiding tool bar, wherein the cover is releasable and can be selectively positioned in the longitudinal direction of the braiding tool bar and aligned in such a way with respect to the braiding tool carrier that an advantageous arrangement of the cover is obtained. If it is necessary to release the cover (e.g. for maintenance purposes), the braiding tool carrier remains fixed to the braiding tool bar by at least one further cover. Thus, there is no need to subsequently readjust the position of the knitting tool carrier relative to the other knitting tool carriers and the knitting tools. Maintenance time and maintenance costs are reduced. The first set of knitting tools may include, for example, warp knitting needles, yarn guide elements, sliders, and/or sinkers.
A cover is advantageous: for which the cover width bDWidth b of knitting tool carrierWIn a ratio of
Preferably, however,
the cover width and the braiding tool carrier width extend in the longitudinal direction of the braiding tool bar. At bD/bWIn the case where the ratio of (a) to (b = 1),the covers can be arranged in such a way with respect to the knitting tool carriers that one cover overlaps half of each of two adjacent knitting tool carriers, thereby fixing them. Therefore, this ratio is considered to be advantageous. If the ratio of the width of the cover to the width of the knitting tool carrier is bD/bWLess than or equal to 0.5, additional advantages are obtained; a suitable arrangement of the covers then enables a single braiding tool carrier to be fixed by at least three covers, each of these covers at least partially overlapping the braiding tool carrier. In particular, if a subset of knitting tools can be held by two covers simultaneously, it is certain that if the other two covers holding that subset of knitting tools are released, for example in order to replace one of the knitting tools in that subset, the knitting tool carrier will still be held by its third cover.
It is also advantageous that at least a second braiding tool carrier is fixable with at least one cover of the at least one fixing arrangement. This enables the use of a wider cover than would be the case if one cover were to always hold only one braiding tool carrier. For this purpose, the cover is arranged relative to the knitting tool carrier in such a way that the cover, which overlaps the knitting tool carrier in its edge region and thus fixes it, also overlaps at least partially a second, adjacent knitting tool carrier, thus also fixing this. The use of a wider cover reduces the setting work on the knitting tool bar.
It is advantageous that: the knitting tool bar includes a longitudinal recess extending in a longitudinal direction of the knitting tool bar; and at least one braiding tool carrier comprises a longitudinal protrusion extending substantially in the longitudinal direction of the braiding tool bar and being preferably insertable in a form-locking manner into a longitudinal recess, such as a groove extending in the longitudinal direction of the braiding tool bar. The form-locking seating of the knitting tool carrier on the knitting tool bar (form-fitting in the working direction of the knitting tool even when the cover has been released) promotes 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 the other knitting tool carriers and the knitting tools; in contrast, the position of the knitting tool carrier in the working direction of the needles is defined by a form fit.
Additional advantages are obtained if the at least one cover and/or the at least one braiding tool carrier and/or the braiding tool rod consist essentially of a fibre-reinforced polymer. Fiber reinforced polymers comprising carbon fibers and/or glass fibers are beneficial. Fiber reinforced polymers comprising: a first set of fibers having a first fiber orientation, the first fiber orientation being substantially along the working direction of the braiding tool; and a second set of fibers having a second fiber orientation substantially along the longitudinal direction of the woven toolbar. The addition of further fibers with further fiber orientation may also have a positive influence on the mechanical and thermal properties. Such covers, braiding tool carriers and braiding tool bars, which are designed with a view to material requirements and stresses acting on the components, are lighter in weight than components made of metal materials. The reduced weight enables the knitting machine to operate at higher working speeds.
It is furthermore advantageous that the knitting tool carrier comprises recesses-preferably grooves-which extend in the working direction of the knitting tool and are adapted to releasably receive the knitting tool, wherein the recesses are spaced apart from each other in the longitudinal direction of the knitting tool bar by protrusions-in the case of grooves, preferably by groove walls. A knitting tool which is arranged in a form-locking manner in a recess of a knitting tool carrier is advantageous. Those protrusions of a knitting tool carrier which are longitudinally adjoined on both sides by recesses of the same knitting tool carrier are internal protrusions. In contrast, external protrusions are those protrusions of a knitting tool carrier which are longitudinally adjoined by a recess of the same knitting tool carrier on only one side. On the second side, in the longitudinal direction, the outer protrusions form the ends of the knitting tool carrier. Like the projections in general, the inner and outer projections can be configured as groove walls. In this context, the groove wall is a projection that bounds the groove. It is particularly advantageous that the width of at least one inner protrusion, i.e. the inner protrusion width, defines the distance between at least two adjacent knitting tools in the longitudinal direction of the knitting tool bar. In this way, the time required for adjusting and aligning a new knitting tool in the knitting tool carrier is reduced in the case of a replacement of the knitting tool.
Advantageously, the at least one fixing arrangement comprises at least one cover with which the knitting tool can be fixed in a recess of the knitting tool carrier and with which the knitting tool projects in height direction beyond a projection of the knitting tool carrier. Thus, the cover secures the knitting tool in the recess of the knitting tool carrier. The knitting tool in turn secures the knitting tool carrier to the knitting tool bar. The cover simply rests on the braiding tool on the cover support surface. These constitute a knitting tool surface which constrains the knitting tool in the direction of the cover (when the knitting tool is in its working position). Thus, no separate securing arrangement is required to secure the knitting tool. Weight is saved and the knitting machine can be run at higher speeds.
It is furthermore advantageous that at least a subset of the braiding tools can be fixed in the recess of the at least one braiding tool carrier by means of two covers. In particular in the edge region of the covers, it can happen that only a part of the cover support surface of the respective knitting tool is in contact with one of the covers due to the gap between adjacent covers. Thus, the knitting tool can no longer be safely secured. It can be ensured that the knitting tools, in particular those held by the edge regions of the cover, are also held securely if they can be additionally held at least partially by means of the second cover.
A cover provides the advantage that in the case of the cover at least one cover flank encloses a flank angle with the working direction which is greater than 25 degrees and less than 45 degrees. The height direction is at right angles to the longitudinal direction of the knitting tool bar and at right angles to the working direction. The cover bearing surface of the knitting tool is therefore always in partial contact with the second cover shaped in this way in the edge region of such a cover and is therefore additionally fixed by this second cover. In the case of flank angles of between 30 and 40 degrees, in particular flank angles of 35 °, additional advantages are obtained. It is particularly advantageous to choose the flank angles such that one cover has the shape of a parallelogram and/or trapezoid in a plane defined by the longitudinal direction of the braiding tool rod and the working direction of the braiding tool. The covers shaped as parallelograms can be arranged one after the other in the same orientation. In contrast, adjacent caps in the trapezoidal shape can be arranged twisted by 180 ° to each other about the height direction.
A further advantage is obtained if there are gaps with a gap width s between adjacent knitting tool carriers in the longitudinal direction of the knitting tool bar. It is advantageous to apply a gap width of the formula:
it is particularly advantageous to apply a gap width of the formula:
the gap makes it possible, at least within the limits of the gap width, to move the knitting tool carriers on the knitting tool bars relative to one another in the longitudinal direction and to align them with one another or to adjust them. This makes it possible to compensate for small production tolerances and to ensure that the knitting tools on different knitting tool bars are arranged in relation to each other in the longitudinal direction such that they do not collide during the knitting process.
Additional advantages are obtained with a knitting tool bar comprising a knitting tool carrier, wherein the inner protrusion has a width b in the longitudinal direction of the knitting tool barIVAnd the outer protrusion has a width bAVWherein the widths are related by the following equation:
the knitting tools are then arranged equidistantly in the longitudinal direction on the knitting tool carrier; adjacent knitting tool carriers are separated by the gap. Configuring the protrusions in this way makes it easier to adjust the weaving tools on the weaving tool carrier and to orient these weaving tool carriers with respect to adjacent weaving tool carriers.
A further useful embodiment according to the teachings of the present invention is a knitting tool bar having at least one knitting tool carrier with a knitting tool carrier width bWFor the width of the knitting tool carrier, the following applies:
preferably, however,
the large width of the knitting tool carrier provides the following advantages: a larger number of knitting tools can be mounted at a time on a single knitting tool carrier than would be the case for a smaller width knitting tool carrier, and thus the knitting tool bar can be fully equipped with fewer knitting tool carriers. As a result, the setting time is reduced, since less weaving tool carriers have to be oriented or adjusted in total. However, smaller width knitting tool carriers have the advantage of being easier to handle because they are smaller and lighter in weight. For this reason, the two above-mentioned dimensional ranges are particularly advantageous for the knitting tool width.
Advantages are obtained with a method for replacing at least one of the knitting tools of a knitting bar, wherein a first group of knitting tools, including the at least one knitting tool, is queued in its working position, one behind the other in the longitudinal direction of the knitting tool bar. The weaving devices of the weaving tools point in a working direction extending at right angles to the longitudinal direction of the weaving tool bar, wherein a subset of a first set of weaving tools comprising the at least one weaving tool is mounted in a weaving tool carrier which releasably connects this subset of weaving tools to the weaving tool bar. At least one securing arrangement secures the at least one braiding tool carrier to the braiding tool bar. Advantages are obtained with the following method: in the method, the fixing arrangement fixes the at least one braiding tool carrier with a second set of n covers, wherein the natural number n is greater than or equal to 2, and releases a maximum of n-1 covers, wherein the at least one braiding tool is released and the at least one braiding tool is exchanged for at least one other braiding tool. The fact that the weaving tool can be exchanged and only n-1 covers have to be released provides the advantage that during the exchange the weaving tool carrier itself is still fixed by at least one cover. The knitting tool carrier maintains its position during the change and does not have to be readjusted after the knitting tools have been changed.
A further advantage is obtained with the method according to the invention if at least one weaving tool is replaced by a maintenance gap, wherein a maintenance gap is created between the weaving tool carrier and at least one of the released at most n-1 covers when it is released. Releasing a maximum of n-1 covers is just enough to create a gap between the knitting tool carrier and the knitting tool, which gap is large enough to permit the knitting tool to be replaced to pass through it. Advantageously, the maintenance gap is adjusted such that it corresponds at least to the maximum abutment height of the knitting tool. This ensures that the maintenance clearance must be large enough to permit the braiding tool to pass therethrough. Depending on the geometry of the braiding tool carrier, braiding tool and cover, it is also possible to replace the braiding tool by a maintenance gap that is smaller than the maximum docking height of the braiding tool. For many braiding tool rods, a resilient insert is disposed between the cap and the braiding tool. In the case of these knitting tool bars, a maintenance gap is created between the knitting tool carrier and the elastic insert.
Also advantageous is a method in which after at least one braiding tool has been replaced, a previously released maximum of n-1 covers is fixed again, wherein a clamping force is generated which at least partially fixes the at least one braiding tool carrier to the braiding tool bar. After the knitting tools have been replaced, the knitting tool bar must be returned to a state in which it can operate in the warp knitting machine. For this purpose, all n covers are firmly clamped to the knitting tool bar together with the knitting tool and the knitting tool carrier.
Drawings
Fig. 1 shows a cross-sectional view of a weaving machine bar 1 with a weaving tool carrier 2, a weaving tool 3 and a fixing arrangement 5.
Fig. 2 shows a fixing arrangement 5 comprising three covers 4 and two screws 6 and two perforated discs 7 for each cover 4.
FIG. 3 shows a detail of section A of FIG. 2; two knitting tool carriers 2 and a plurality of knitting tools 3 are shown.
Fig. 4 shows the cross-section of fig. 1 while the knitting tool 3 is being changed.
Detailed Description
Fig. 1 shows a cross-sectional view of a knitting tool bar 1 with a knitting tool carrier 2 which engages with its longitudinal projection 17 in a form-locking manner in a longitudinal recess 18 in the knitting tool bar 1. The section shown extends through a groove 11 in the knitting tool carrier 2. The recess 11 is bounded by recess walls 10. The knitting tool 3 has a hook-shaped knitting device 8 at its end pointing in the working direction and is arranged in a recess 11 which is not located in the sectional plane. The knitting tool 3 protrudes beyond the groove wall 10 in the height direction z. The fixing arrangement 5 comprises a plurality of covers 4-in a cross-sectional view all but one cover 4 is obscured-a plurality of screws 6 and a plurality of perforated discs 7. The screws 6 generate clamping forces that clamp the cover 4 together with the resilient insert 9, the knitting tool 3 and the knitting tool carrier 2 against the knitting tool bar 1 and hold them in place.
Fig. 2 shows different views of the elements already shown in fig. 1. The fixing arrangement 5 comprises three covers 4 having the same cover width bDAnd each cover has two screws 6 and two perforated discs 7. Width b of the coverDWidth b of knitting tool carrierWIs less than 0.5. In addition to the width ratios previously described as advantageous, wherein b is also conceivable to applyD/bW >1 width ratio. However, it is not limited toThis results in a limitation of the number of covers 4 and/or knitting tool carriers 2 and is only advantageous in the case of a clever arrangement of the covers 4 and up to a maximum number of knitting tool carriers 2. In the x-y plane, the cover 4 has a cross section in the shape of a parallelogram and is inclined away from the working direction y at its cover side 20 so as to enclose a side corner 19. Having a width b of the knitting tool carrierWIs also visible. Two of the three knitting tool carriers 2 are not shown in their entirety-in this figure this is indicated by dashed boundary lines. All but one of the grooves 11 in the intermediate knitting tool carrier 2 of fig. 2 accommodates a knitting tool 3. The grooves 11 in the knitting tool carrier 2 on the right-hand side and the knitting tool carrier 2 on the left-hand side of fig. 2 are empty-i.e. they are not equipped with knitting tools 3. This view is for illustration. In the ready-to-operate state, all recesses 11 are able to accommodate knitting tools 3. It can be seen that within the edge region 21 of the cover one of the knitting tools 3 is held by two 4 of the three covers 4 in fig. 2, the middle cover 4 and the left-hand cover 4. Both covers 4 are in contact with the respective cover bearing surfaces 12 of the braiding tools 3 in the edge region 21.
Fig. 3 shows detail a of fig. 2. Two weaving tool carriers 2 and a gap s between the two weaving tool carriers 2 are shown. The weaving tool carrier 2 on the left-hand side in fig. 3 is shown with five grooves 11. Four of these recesses 11 accommodate the knitting tool 3 and one recess 11 is "empty". Both knitting tool carriers 2 are held in the area of detail a by a cover 4. Between the grooves 11 or the knitting tools 3, a width b of the inner protrusions is shownIVInner protrusion 15. The outer protrusion 10 directly adjacent to the gap s has an outer protrusion width bAVThe outer protrusion 16. Width b of outer protrusionAVSize of (d) and inner protrusion width bIVIs given by the previously mentioned formula.
Fig. 4 shows a cross-sectional view of the braiding tool rod 1 in the same position as in the cross-sectional view of fig. 1. However, the cover 4 is not in its working position but in a waiting position in which there is a maintenance gap 14 between the elastic insert 9 of the cover 4 and the groove bottom 24 of the knitting tool carrier 2. The groove bottom 24 delimits the groove 11 in the height direction z. The braiding tool 3 is shown with its maximum butt 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 having to completely release the cover 4 from the knitting tool bar 1.
List of reference numerals
1 knitting tool bar
2 knitting tool carrier
3 knitting tool
4 cover
5 fixed arrangement structure
6 screw
7 perforated disc
8 knitting device
9 elastic insert
10 projection/recess wall
11 recess/groove
12 bearing surface for a cover
13 gap
14 maintenance gap
15 inner protrusion/groove inner wall
16 outer projection/recess outer wall
17 longitudinal projection
18 longitudinal recess
19 side wing angle of cover 4
20 cover side wing
21 edge region of the cover
22 maximum butt height of the knitting tool 3
23 maintain the height of the gap 14
24 bottom of groove 11
x longitudinal direction of knitting tool bar 1
y working direction
z height direction
bDWidth of the cover
bWWidth of knitting tool carrier
Width of s gap
bAVOuter coverWidth of protrusion/width of groove outer wall
bIVWidth of inner protrusion/width of inner wall of groove.
Claims (15)
1. A knitting tool bar (1) for moving a first set of knitting tools (3),
wherein the knitting tools (3) can be arranged in a row one after the other in the longitudinal direction (x) of the knitting tool bar (1) in the working position thereof,
wherein the knitting means (8) of these knitting tools (3) point in a working direction (y) which extends at right angles to the longitudinal direction (x) of the knitting tool bar (1),
and wherein the knitting tool bar (1) has the following features:
at least one braiding tool carrier (2) for receiving a subset of the first set of braiding tools (3), the braiding tool carrier being releasably connected to the braiding tool bar (1),
at least one fixing arrangement (5) for fixing the at least one knitting tool carrier (2) to the knitting tool bar (1),
the method is characterized in that:
the fixing arrangement (5) comprises at least a second set of n covers (4) adapted and positioned for fixing the at least one knitting tool carrier (2), wherein the natural number n is greater than or equal to 2,
and said at least one knitting tool carrier (2) has been fixable by a subset of said second set of n covers (4), said subset comprising at most n-1 covers (4).
2. Braiding tool bar (1) according to the preceding claim,
which is characterized by comprising
At least one cover (4), for which a cover width b extends in the longitudinal direction (x) of the knitting tool bar (1)DAlong the knitting tool bar(1) Of the longitudinal direction (x) of the knitting tool carrier width bWIn a ratio of
Preferably, however,
3. braiding tool bar (1) according to any of the preceding claims,
it is characterized in that the preparation method is characterized in that,
at least a second knitting tool carrier (2) can be fixed by at least one cover (4) of the at least one fixing arrangement (5).
4. Braiding tool bar (1) according to any of the preceding claims,
which is characterized by comprising
A longitudinal recess (18) extending in the longitudinal direction (x) of the knitting tool bar (1),
and at least one knitting tool carrier (2) comprising a longitudinal protrusion (17) also extending substantially in the longitudinal direction (x)
And the longitudinal projection is insertable into the longitudinal recess (18).
5. Braiding tool bar (1) according to any of the preceding claims,
it is characterized in that the preparation method is characterized in that,
at least one cover (4) and/or at least one braiding tool carrier (2) and/or the braiding tool rod (1) essentially consists of a fibre-reinforced polymer.
6. Braiding tool bar (1) according to any of the preceding claims,
it is characterized in that the preparation method is characterized in that,
at least one braiding tool carrier (2) comprises recesses (11) -preferably grooves (11) -which extend in the working direction (y) of the braiding tool (3) and are adapted to releasably receive the braiding tool (3), wherein the recesses (11) are spaced apart from each other in the longitudinal direction (x) of the braiding tool bar (1) by protrusions (10) -in case of grooves (11), preferably by groove walls (10).
7. Braiding tool bar (1) according to the preceding claim,
it is characterized in that the preparation method is characterized in that,
the at least one fixing arrangement (5) comprises at least one cover (4) with which the knitting tool (3) can be fixed in the recess (11) of the at least one knitting tool carrier (2).
8. Braiding tool bar (1) according to the preceding claim,
it is characterized in that the preparation method is characterized in that,
at least a subset of the knitting tools (3) can be fixed in the recess (11) of the at least one knitting tool carrier (2) by means of two covers (4).
9. Braiding tool bar (1) according to any of the preceding claims,
which is characterized by comprising
At least one cover (4), in the case of which at least one cover flank (20) and the working direction (y) enclose a flank angle (19), wherein the flank angle (19) is greater than 25 degrees and less than 45 degrees.
10. Braiding tool bar (1) according to any of the preceding claims,
it is characterized in that the preparation method is characterized in that,
gaps (13) of a gap width s are present between adjacent knitting tool carriers (2) in the longitudinal direction (x).
11. Braiding tool bar (1) according to the preceding claim,
which is characterized by comprising
At least one knitting tool carrier (2), in the case of which the inner protrusion (15) has a width b in the longitudinal direction (x) of the knitting tool bar (1)IVAnd the outer protrusion (16) has a width bAVWherein the width is related by the formula:
12. braiding tool bar (1) according to any of the preceding claims,
which is characterized by comprising
At least one knitting tool carrier (2) having a knitting tool carrier width bWFor the knitting tool carrier width, the following applies:
preferably, however,
13. a method for replacing at least one knitting tool (3) of a knitting tool bar (1),
wherein a first group of knitting tools (3) comprising the at least one knitting tool (3) is arranged in its working position in a row one behind the other in the longitudinal direction (x) of the knitting tool bar (1),
wherein the knitting means (8) of the knitting tool (3) point in a working direction (y) which extends at right angles to the longitudinal direction (x) of the knitting tool bar (1),
wherein a subset of the first set of knitting tools (3) comprising the at least one knitting tool (3) is mounted in a knitting tool carrier (2) releasably connecting this subset of knitting tools (3) to the knitting tool bar (1),
and wherein at least one fixing arrangement (5) fixes the at least one knitting tool carrier (2) to the knitting tool bar (1),
the method is characterized in that:
the fixing arrangement (5) fixes the at least one knitting tool carrier (2) with a second set of n covers (4), wherein the natural number n is greater than or equal to 2,
and releasing at most n-1 covers (4) in order to release the at least one knitting tool (3),
and replacing the at least one knitting tool (3) with at least one other knitting tool (3).
14. The method according to the preceding claim, wherein,
it is characterized in that the preparation method is characterized in that,
replacing at least one knitting tool (3) by maintaining the gap (14),
wherein, when this is released, the maintenance gap (14) is created between the braiding tool carrier (2) and at least one of the at most n-1 covers (4).
15. The method according to the preceding claim, wherein,
it is characterized in that the preparation method is characterized in that,
after the at least one knitting tool (3) has been replaced, a previously released maximum of n-1 covers (4) is fastened again,
wherein a clamping force is generated, which at least partially fixes the at least one braiding tool carrier (2) to the braiding tool bar (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20188736.1A EP3945151A1 (en) | 2020-07-30 | 2020-07-30 | Warp knitting tool bar and method for replacing a warp knitting tool |
| EP20188736.1 | 2020-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114059225A true CN114059225A (en) | 2022-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110871347.3A Pending CN114059225A (en) | 2020-07-30 | 2021-07-30 | Knitting tool bar and method for replacing knitting tools |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3945151A1 (en) |
| JP (1) | JP2022027704A (en) |
| CN (1) | CN114059225A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1848293A (en) * | 1930-01-16 | 1932-03-08 | Wildman Mfg Co | Needle bar for full fashioned knitting machines |
| US2254201A (en) * | 1940-03-01 | 1941-09-02 | Alfred Hofman & Company | United needle mounting |
| GB788764A (en) | 1955-02-23 | 1958-01-08 | Karl Mayer Erste Hessische Wir | Improvements in or relating to needle bars for warp knitting machines |
| DE4302858C1 (en) * | 1993-02-02 | 1994-06-01 | Mayer Textilmaschf | Knitting machine needlebar - has the trickplate divided into separate heat sinks |
| EP3354781B1 (en) | 2017-01-25 | 2019-08-21 | Karl Mayer Textilmaschinenfabrik GmbH | Knitting element bar |
-
2020
- 2020-07-30 EP EP20188736.1A patent/EP3945151A1/en active Pending
-
2021
- 2021-07-30 CN CN202110871347.3A patent/CN114059225A/en active Pending
- 2021-07-30 JP JP2021125437A patent/JP2022027704A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP3945151A1 (en) | 2022-02-02 |
| JP2022027704A (en) | 2022-02-14 |
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