Multi-part element for textile machines and method for producing the textile machine element

Abstract

The present invention relates to a textile machine element for use in textile machines and to a manufacturing method for producing the textile machine element. The textile machine element according to the invention comprises a first section (2) with a male connecting element (4) extending predominantly in a longitudinal direction (x), and a second section (3) with a female connecting element (5), wherein the male connecting element (4) is pressed into the female connecting element (5) to connect the first section (2) and the second section (3). In order to withstand particularly high bending and / or alternating loads while still being easy and precise to manufacture, the male connecting element (4) and the female connecting element (5) are in contact with each other in at least two spaced-apart pressing areas (6).

Description

[0001] The present invention relates to a textile machine element for use in textile machines and to a manufacturing process for producing the textile machine element. Textile machine elements within the meaning of this patent application can be various components used in textile machines. In particular, textile machine elements are textile tools (such as knitting needles, warp needles, dies, sorting parts, felting needles, sewing needles, tufting needles, tufting knives, reeds, or heddles) or components for guiding textile tools in textile machines (such as guides for needle beds of flat knitting machines, bars for warp knitting machines, or cylindrical guides of circular knitting machines). Such textile machine elements are often flat components with a comparatively thin profile. Due to their thin profile, the precise manufacturing of large textile machine elements is particularly difficult.

[0002] It is known, for example, from DE202020100948U1, to assemble large textile machine elements from several smaller sections using coupling elements in order to manufacture the textile machine elements with particularly high precision. For the purposes of this patent application, coupling elements are also referred to as connecting elements, since they serve to connect several sections. However, it has been shown that the connecting elements known from the prior art cannot withstand all the loads occurring in textile machines, and that, in particular, under alternating loads and bending loads, the connecting elements can come loose.

[0003] The object of the invention is therefore to provide a textile machine element consisting of several parts that can withstand particularly large bending and / or alternating loads and that is easy and precise to manufacture.

[0004] The problem is solved by adding the characterizing part to the preamble of claims 1 and 13. A textile machine element according to the invention, suitable for use in a textile machine, comprises at least a first section with a male connecting element extending predominantly in a longitudinal direction, and at least a second section with a female connecting element. However, the teaching according to the invention is not limited to textile machine elements with two sections. Textile machine elements comprising three or more sections are also conceivable. According to the invention, the male connecting element has an outer contour in an xy-plane spanned by the longitudinal direction and a vertical direction perpendicular to the longitudinal direction, which is pressed into an inner contour of the female connecting element such that the first and second sections are connected to each other.The male connecting element according to the present patent application is preferably cantilevered to form the previously described outer contour, whereas the female connecting element preferably has a recess to form the previously described inner contour. The connection is preferably rigid and / or cannot be released without damage. This is particularly advantageous for connections that, during operation, are not completely received and guided in a needle channel or groove of the textile machine, and thus must hold firmly and securely on their own. A connection according to the present patent application is no longer considered to be non-destructible if such a great force must be applied to release the connection that the textile machine element is plastically deformed. Since textile machine elements are very often precision-engineered parts, even slight plastic deformations can render them unusable.To ensure that the textile machine element can withstand particularly high bending and / or alternating loads while simultaneously being easy and precise to manufacture, the male and female connecting elements are in contact with each other in at least two spaced-apart contact zones. These contact zones extend continuously in a lateral direction perpendicular to the longitudinal and vertical directions over at least 50%, but preferably at least 75%, of the width of the textile machine element. A contact zone is therefore a continuous area in which the male and female connecting elements are in continuous contact over the aforementioned width of the textile machine element.Pressing generates stresses in the textile machine element, which are greater in the press-fit areas than in the other areas. These stresses are particularly greater than the stresses in the areas between them. Due to these stresses, pressing forces act on the male and female connectors in the press-fit areas. Press-fit areas can be advantageously created by ensuring that the outer contour of the male connector overlaps, at least partially, with the inner contour of the female connector in its unpressed state (i.e., before pressing). In this unpressed state, the outer contour of the male connector is then, at least partially, larger than the inner contour of the female connector.The male and female connecting elements can therefore have different contours and may not fit together perfectly. Only through pressing do the outer and inner contours align in the pressing areas. A single pair consisting of a male and a female connecting element comprises at least two pressing areas. A textile machine element with a first and a second section connected by several pairs of male and female connecting elements, each pair having only one continuous pressing area, is therefore not an embodiment of the invention.

[0005] Further advantages arise if at least one gap is arranged between the at least two spaced-apart pressing areas, by which the male and female connecting elements are separated. This means that within the extent of the gap, there is a distance between the male and female connecting elements. Outside the extent of the gap, particularly in the pressing areas, the male and female connecting elements can be in direct contact with each other. Advantageously, the gap extends over at least 25%, but preferably over at least 50%, of the width of the textile machine element. In a particularly advantageous embodiment, the gap extends continuously over the entire thickness of the textile machine element. A gap is thus an elongated opening.The gap can be formed because, within the gap's extent, the outer contour of the male connector is smaller than the inner contour of the female connector. Thus, the male and female connectors have a clearance fit within the gap's extent. Alternatively, the gap can be formed by the female connector expanding during crimping. In the areas of the male and female connectors adjacent to the gap, a lower stress is achieved than in the crimped areas. This prevents the internal stresses in the textile machine component from becoming too high. Simultaneously, the crimped areas can be designed to withstand higher stresses, resulting in greater resistance of the textile machine component to bending and alternating loads.The gap is preferably large enough to be visible to the naked eye when backlit by looking at the side surfaces of the textile machine element. This means that light passing through the gap is visible to the naked eye. Advantageously, the gap can also be subsequently filled or closed with a filler material. This means that the gap was filled after its initial formation. The filler material could be, for example, a plastic, a ceramic, or a metal.

[0006] Advantageously, the male connector comprises a head, a shank, and a root. Preferably, the head is the longitudinally x-oriented end of the male connector. The shank extends from the head and is shorter than the head at its highest point. Extending longitudinally away from the head, the root connects to the shank. The root connects the male connector to the remaining part of the first section and is taller than the shank. Due to the shorter shank height, the male connector has two undercuts at the transition between the shank and the head, which advantageously form compression zones.

[0007] Advantageously, the male and female connectors have at least three crimping areas, each separated from the others by at least one gap. The textile machine element preferably comprises at least two gaps for this purpose. The three crimping areas are advantageously arranged symmetrically, with the axis of symmetry running centrally through the male and female connectors along the longitudinal direction, and at least one of the crimping areas lying on the axis of symmetry. This creates a particularly advantageous stress state, leading to improved resistance of the textile machine element to bending and alternating loads. It is especially advantageous if at least one of the three crimping areas is located at the head of the male connector.

[0008] Further advantages arise when at least two pressing areas exert opposing pressing forces. This means that at least two different pressing forces acting on the same connecting element act in opposite directions, i.e., they have opposing directional components. For those skilled in the art, pressing forces are those forces that act perpendicular to the contact surface between the male and female connecting elements due to the stress state created by pressing the connecting elements together. They thus describe force vectors that act perpendicular to the contact surface. All pressing forces acting on the male and female connecting elements are in equilibrium with each other when the textile machine element is at rest. The sum of all force vectors is therefore zero.The opposing pressing forces create tension in the textile machine element between the pressing areas. This improves the connection between the first and second sections, enabling the textile machine element to withstand even greater bending and alternating loads without failure.

[0009] In an advantageous embodiment, the female connecting element comprises at least two legs that encompass the male connecting element. These two legs improve the connection between the male and female connecting elements. The textile machine element can therefore withstand even greater bending and alternating loads. The legs are preferably arranged such that they form at least part of the inner contour of the female connecting element. It is particularly advantageous if the legs are pre-tensioned to enclose the male connecting element, so that the legs exert a continuous clamping force on the male connecting element. This measure also enables the textile machine element to withstand greater bending and alternating loads.

[0010] Further advantages arise when the at least two legs each comprise at least one compression zone, wherein the compression forces of the compression zones have directional components that act oppositely to each other in a vertical direction perpendicular to the longitudinal direction and clamp the at least two legs against each other in the vertical direction towards the center of the male connecting element. The legs form levers through which the compression forces are introduced into the textile machine element. Due to the leverage effect, an even better connection between the male and female connecting elements can thus be achieved. The compression zones are preferably arranged at the ends of the legs so that the textile machine element can withstand the highest possible bending and alternating loads.Opposing compression forces acting in the vertical direction can advantageously be provided by the male connecting element comprising at least two first wedge elements, each having at least one surface inclined towards the center of the male connecting element, and by the legs of the female connecting element each having at least one second wedge element inclined away from the center of the female connecting element and arranged in such a way that it is in contact with one of the first wedge elements of the male connecting element in order to form a compression area at the end of each leg.

[0011] The pressing forces of the pressing areas of at least two legs can advantageously also have a longitudinal component. This additionally tensions the textile machine element in the longitudinal direction, enabling it to withstand even greater bending and alternating loads.

[0012] The textile machine component is bounded in a width direction perpendicular to the length and height directions by two side surfaces. Advantageously, the edges formed by the male and / or female connecting element with the two side surfaces are provided, at least in sections, with a rounding and / or chamfer such that the rounding and / or chamfering of the edges creates a recess in at least one of the two side surfaces. A chamfer on a workpiece such as a textile machine component is generally known to those skilled in the art as a narrow surface created by chamfering instead of an edge. The rounding or chamfer allows the male connecting element to be pressed into the female connecting element with lower assembly forces. Excessive stress or damage to the edges or side surfaces during pressing can thus be avoided.Such damage would lead to increased stress concentrations in the finished textile machine component. By avoiding damage during assembly, the textile machine component can therefore withstand greater bending and alternating loads during later operation.

[0013] Further advantages arise if the edge of the male connector facing the first of the two surfaces has a larger radius and / or chamfer than the edge of the female connector facing this first surface, and if the edge of the male connector facing the second surface has a smaller radius and / or chamfer than the edge of the female connector facing this second surface. The first and second components are particularly easy to manufacture if the edges of the male and female connectors adjacent to the two surfaces of the components have different radiuses or chamfers of different sizes.In the finished textile machine component, it is advantageous to arrange the differently sized radii or chamfers in the manner described above, as this combines a large radii or chamfer with a small radii or chamfer on each side surface. This results in a particularly uniform stress distribution within the textile machine component, enabling it to withstand especially high bending and alternating loads.

[0014] Advantageously, the male and / or female connecting element is deformed such that it forms at least one projection that extends into the at least one recess in at least one of the two side surfaces. This projection further secures the connection between the male and female connecting elements against loosening in the lateral direction. This securing is preferably achieved by a positive locking mechanism. The textile machine element can thus withstand even greater bending and alternating loads. Additionally, the projection at least partially closes the recess in the side surface, thereby reducing the ingress of dirt into the recess. This allows the textile machine element to be used to produce textiles of improved quality.It is particularly advantageous if the projection enlarges at least one of the contact areas, at least in part, to such an extent that the female and male connecting elements are clamped together even more effectively. This allows the textile machine element to withstand even greater bending and alternating loads. However, the projections themselves are so small that they do not establish contact between the male and female connecting elements that extends over at least 50% of the width of the textile machine element. Therefore, projections alone do not create contact areas as defined in the present patent application.

[0015] Further advantages arise if the outer contour of the male connecting element is larger than the inner contour of the female connecting element by 0.001 mm to 0.1 mm, preferably by 0.005 mm to 0.1 mm, in at least one of the at least two pressing areas. This allows for a very advantageous stress distribution in the textile machine element. On the one hand, sufficiently large pressing forces can be generated. On the other hand, excessively high surface pressures in the pressing areas can be avoided. Such a textile machine element can therefore withstand very high bending and alternating loads and simultaneously has a long service life.

[0016] The object of the present invention is also achieved by a method for manufacturing a textile machine element. In this method, the male connecting element is pressed with its outer contour into the inner contour of the female connecting element. This pressing creates at least two spaced-apart pressing areas in which the male and female connecting elements are in contact. The pressing areas extend continuously in the width direction over at least 50%, but preferably at least 75%, of the width of the textile machine element. This results in the production of a textile machine element that has a particularly advantageous internal stress state.In the spaced-apart pressing zones, pressing forces act that clamp the male and female connecting elements together in such a way that the textile machine element can withstand very high bending and alternating loads during operation. Even more advantageous stress states can be achieved if at least three, four, five, or more spaced-apart pressing zones are formed by the pressing process. All the features described above with regard to the textile machine element according to the invention can advantageously be combined with the method for manufacturing the textile machine element.

[0017] Advantageously, the first and second sections of the textile machine element are each manufactured as a single part. The textile machine element is then obtained by joining the first and second sections. This joining is carried out as described above by pressing the outer contour of the male connecting element of the first section into the inner contour of the female connecting element of the second section. The first and / or the second section can advantageously be manufactured from a flat semi-finished product, such as a sheet. The first and second sections can advantageously be made of a metallic material, but also of a ceramic, plastic, wood, a mineral material, or any other material suitable for textile machine elements.

[0018] Further advantages arise when the assembly force applied to crimp the male and female connecting elements is measured and preferably documented. The measured assembly force is an indicator of the textile machine element's load-bearing capacity under bending and alternating loads. By measuring and documenting the assembly force, the load-bearing capacity of the manufactured textile machine element can therefore be predicted and monitored. This ensures that the manufactured textile machine element actually achieves the desired high load-bearing capacity under bending and alternating stress during the manufacturing process. Fig. 1 Figure 1 Figure 2 shows a textile machine element (1) according to the invention, which is composed of a first section (2) and a second section (3). Figure 2 shows an enlarged representation of the male connecting element (4) of the first segment (2) made of Fig. 1 Fig. 3 Figure 3 shows an enlarged representation of the female connecting element (5) of the second section (3) made of Fig. 1 Fig. 4 Figure 4 shows an enlarged representation of the textile machine element (1) from Fig. 1 in the area of ​​the male and female connecting elements (4, 5). Fig. 5 Figure 5 Fig. 6 shows an enlarged view of an alternative embodiment of the textile machine element (1) in the area of ​​the male and female connecting elements (4, 5). Figure 6 shows the section AA through the textile machine element (1) from Fig. 1 with recesses (19) in the side surfaces (10, 110, 210). Fig. 7 Figure 7 shows the section BB through the textile machine element (1) from Fig. 1 Fig. 8 Figure 8 Fig. 9 shows the section AA through the textile machine element (1) in an alternative embodiment, wherein projections are formed that extend into the recesses (19). Figure 9shows the section BB through the textile machine element (1) in the Fig. 8 alternative embodiment already shown. Fig. 10 Figure 10 Fig. 11 shows a textile machine element (1) designed as a needle bar (27) according to the invention. Figure 11 Shows a textile machine element (1) designed as a circuit board (28) according to the invention.

[0019] Figure 1Figure 1 shows a textile machine element 1, which is composed of a first section 2 and a second section 3. The first section 2 comprises a male connecting element 4, whose outer contour is pressed into an inner contour of the female connecting element 5, thus connecting the first section 2 and the second section 3. The textile machine element 1 can therefore be composed of several individual parts (or sections). This has the advantage that the smaller individual parts can be manufactured more easily and with greater precision than a large, single-piece textile machine element 1. The textile machine element 1 shown is designed as a selectable part and additionally comprises a control edge 20, a drive foot 21, a spring element 22, and a coupling section 23 for connecting further textile machine elements 1.However, it is obvious to those skilled in the art that the teaching according to the invention is applicable not only to selection parts but also to all other textile machine elements that can be assembled from several parts. The male and female connecting elements 4, 5 can also be arranged in various embodiments at different locations on the textile machine element 1. For example, they could be arranged in the shaft near the hook of a knitting needle to connect the working part with the hook of a knitting needle to the shaft of this knitting needle. Likewise, the male and female connecting elements 4, 5 could also be arranged in the extension area of ​​the drive foot 21 to connect the drive foot 21 to the other parts of the textile machine element 1. The [unclear text] Figure 1 The textile machine element 1 shown is therefore to be understood as only one of many possible embodiments.

[0020] In Figures 2 and 3 are the male connecting element 4 of the first section 2 and the female connecting element 5 of the second section 3, from which the in Fig. 1 The textile machine element 1 shown is assembled, enlarged. The first section 2 and the second section 3 are thus in the Figures 2 and 3 not yet connected as in the Figure 1 The male connecting element 4 in Figure 2The male connecting element 4 comprises a head 11, a shaft 12, and a root 13. The head 11 forms the end of the male connecting element 4 that points in the longitudinal direction x. The shaft 12 adjoins the head 11 and has a smaller height in the vertical direction y than the head 11 at its point of greatest height. The root 13 adjoins the shaft 12 in the direction away from the head 11. The root 13 connects the male connecting element 4 to the remaining part of the first section 2 and has a greater height in the vertical direction y than the shaft 12. Due to the smaller height of the shaft 12, the male connecting element 4 has two undercuts 14 at the transition between the shaft 12 and the head 11. The undercuts 14 are formed in the textile machine element 1. Fig. 1This is particularly advantageous for forming predefined pressing zones 6 when pressing the first section 2 and the second section 3 together. The root 13 of the male connecting element 4 comprises two first wedge elements 15, each of which has a surface inclined towards the center of the male connecting element 4.

[0021] In Figure 3 The female connecting element 5 of the second section 3 is shown enlarged. The female connecting element 5 comprises two legs 9 extending in the longitudinal direction x. Both legs 9 each have an undercut 14, which is designed to receive the head 11 of the male connecting element 4. Fig. 2is suitable. The remaining part of the legs 9 is shaped such that it can grip the shaft 12 of the male connecting element 4. At their ends, which point away from the other parts of the second section 3 in the longitudinal direction x, the legs 9 each have a second wedge element 16, which is inclined away from the center of the female connecting element 5 and is arranged such that it is in contact with one of the first wedge elements 15 of the male connecting element 4 in the textile machine element 1 in order to form a pressing area 6 at the end of each leg 9.

[0022] The Figure 4 shows an enlarged view of textile machine element 1 from Fig. 1in the area of ​​the male connecting element 4 and the female connecting element 5. The textile machine element 1 has five pressing areas 6 in which the outer contour of the male connecting element 4 was larger than the inner contour of the female connecting element 5 before pressing, so that pressing forces 8 are generated in this area by the pressing and the associated alignment of the contours of the male and female connecting elements 4, 5. In the Figure 4 The compressive forces 8 acting on the female connecting element 5 are represented by arrows. According to Newton's third law, these compressive forces 8 are naturally counteracted by equal and opposite forces acting on the male connecting element 4. These opposite forces are also compressive forces within the meaning of the present patent application, but are shown in the diagram for clarity. Figure 4Not shown. In the illustrated embodiment, five pressing areas 8 are spaced apart from one another by four gaps 7, wherein the pressing areas 8 and the gaps 7 are arranged alternately along the dividing line between the male connecting element 4 and the female connecting element 5, so that one of the gaps 7 is always positioned between two of the pressing areas 8 to space them apart. In the area of ​​the gap 7, the first section 2 and the second section 3 do not contact each other. Therefore, no pressing forces act in the area of ​​the gap 7. In this way, an advantageous stress state can be generated via the textile machine element 1. One of the pressing areas 8 is arranged on the head 11 of the male connecting element 4 on a central axis 17 running centrally through the male connecting element 4 in the longitudinal direction x. The remaining four pressing areas 8 are distributed symmetrically with respect to the central axis 17.This creates a particularly advantageous symmetrical stress state. One of the pressure zones 8 is also arranged at each end of the legs 9. In conjunction with the pressure zone 8 located on the head 11 on the central axis 17, this achieves a tension on the male and female connecting elements 4, 5 over a longitudinal length x. The connection between the male and female connecting elements 4, 5 is thus made particularly stable.

[0023] The Figure 5 Figure 1 shows an enlarged view of an alternative embodiment of the textile machine element 1 in the area of ​​the male connecting element 4 and the female connecting element 5. This embodiment differs from the one shown in Figure 2. Fig. 4 The embodiment shown is improved by eliminating the pressing area 8 on the central axis 17 at the head 11 of the male connecting element 4. The Figure 4In the embodiment, the columns 7 adjacent to this pressure area 8 are made of Figure 5 to form a large gap 7, which extends in the vertical direction y over the entire height of the head 11. The in Fig. 5 The embodiment shown therefore has one less pressing area 8 and one less gap 7. This makes the textile machine element 1 easier to manufacture. In particular, pressing the first section 2 and the second section 3 together is facilitated. Nevertheless, even in this embodiment, the textile machine element 1 withstands greater bending and alternating loads compared to textile machine elements known from the prior art.

[0024] The Figure 6 shows the section AA through the textile machine element 1 from Fig. 1with recesses 19 in the side surfaces 10, 110, 210. The recesses 19 are formed by rounding 18 of the edges that the male and female connecting elements 4, 5 have on the side surfaces 10, 110, 210. The rounding 18 prevents damage to the side surfaces 10, 110, 210 when the male and female connecting elements 4, 5 are pressed together. The textile machine element 1 can therefore withstand greater loads. In the illustrated embodiment, the edge of the male connecting element 4 facing a first side surface 110 of the two side surfaces 10 has a larger radius 18 than the edge of the female connecting element 5 facing this first side surface 110. For the edges facing the second side surface 210, the opposite is true: the edge of the male connecting element 4 facing this second side surface 210 has a smaller radius than the edge of the female connecting element 5 facing the second side surface 210.A small radius 18 and a large radius 18 together always form a recess 19. In this way, the male and female connecting elements 4, 5 have direct contact with each other in the pressing areas 6, which are arranged centrally in the textile machine element 1 in the width direction z. The pressing areas 6 have a width in the width direction z – the pressing area width 24 – which, in the illustrated embodiment, is approximately 50% of the width of the textile machine element 1 in the width direction z – the textile machine element width 26. This creates a very advantageous stress state that enables the highest possible load-bearing capacity of the textile machine element 1 during operation.

[0025] The Figure 7 shows section BB through textile machine element 1 from Fig. 1The section BB runs through the shaft 12 of the male connecting element 4 and the legs 9 of the female connecting element 5. In the section BB shown, it is clearly visible that the legs 9 are each spaced apart from the shaft 12 of the male connecting element 4 by a gap 7.

[0026] The Figure 8 shows the same AA cut as Figure 6 for an alternative embodiment of the textile machine element 1. Since the in Figure 1 The view shown for this embodiment of the textile machine element 1 does not differ; the view shown in Figure 1 The illustration shown also applies to this alternative embodiment. In contrast to the one in Figure 6 The embodiment shown is in the Figure 7In the illustrated embodiment, the male or female connecting element 4, 5 is deformed in the area of ​​the projections 19 such that a projection 25 is formed which extends into the respective recess 19. This creates a positive fit between the male and female connecting element 4, 5 acting in the lateral direction z. Additionally, the projections 25 increase the contact area of ​​the pressing areas 6. The projections thus improve the connection between the male and female connecting element. The textile machine element 1 can therefore withstand even greater bending and alternating loads during operation.

[0027] The Figure 9 shows section BB for the alternative embodiment of the textile machine element 1, which is also in Fig. 8As shown in section BB, in this embodiment as well, the legs 9 of the female connecting element 5 are spaced apart from the shaft 12 of the male connecting element 4 by a gap 7. Only in the area of ​​the recesses 19 are the gaps 7 partially closed by the projections 25, which extend into the recesses 19. This prevents the accumulation of contaminants in the gap 7. At the same time, the connection between the male and female connecting elements 4, 5 is improved. The textile machine element 1 can thus withstand even greater bending and alternating loads. However, the contact area of ​​the projections 25 is so small that they alone do not constitute pressure zones 6 within the meaning of the present patent application.

[0028] The Figure 10Figure 1 shows a schematic, not-to-scale representation of a textile machine element 1 according to the invention, which is designed as a needle bar 27 for use in knitting machines. The needle bar 27 is composed of a first section 2 with a male connecting element 4 and a second section 3 with a female connecting element 5. Since the male and female connecting elements 4, 5 of the needle bar 27 and the in Fig. 1 The textile tool shown (1) differs only in its dimensions; the schematic (not to scale) representations of the Figures 2 to 9 also for the needle bar 27.

[0029] The Figure 11Figure 1 shows a textile machine element 1 according to the invention, which is designed as a circuit board 28 for use in knitting machines. The circuit board 28 is composed of a first section 2 with a male connecting element 4 and a second section 3 with a female connecting element 5. Since the male and female connecting elements 4, 5 of the circuit board 28 and the in Fig. 1 The textile tool shown (1) differs only in its dimensions; the schematic representations of the Figures 2 to 9 also for board 28. Reference symbol list 1 Textile machine element 2 First section 3 Second section 4 Male connecting element 5 Female connecting element 6 Pressure area 7 gap 8 Pressing force 9 leg 10 side surface 11 Head of the male connecting element (4) 12 shaft 13 root 14 Undercut 15 First wedge element 16 Second wedge element 17 central axis 18 Rounding 19 in-depth 20 Control edge 21 drive foot 22 spring element 23 Coupling section 24 Pressure range width 25 projection 26 Textile machine element width 27 Needle bridge 28 circuit board x Longitudinal direction y Altitude z Latitude

Claims

1. Textile machine element (1) suitable for use in a textile machine, comprising a) at least a first section (2) with a male connecting element (4) extending predominantly in a longitudinal direction (x), and at least a second section (3) with a female connecting element (5), characterized by a) that the male connecting element (4) in an xy-plane spanned by the longitudinal direction (x) and a vertical direction (y) perpendicular to the longitudinal direction (x) has an outer contour which is pressed into an inner contour of the female connecting element (5) such that the first and the second part (2, 3) are connected to each other b) and thatthe male connecting element (4) and the female connecting element (5) are in contact with each other in at least two spaced-apart pressing areas (6), c) wherein the pressing areas (6) each extend continuously in a width direction (z) perpendicular to the longitudinal direction (x) and the height direction (y) over at least 50%, preferably at least 75%, of the width of the textile machine element (1).

2. Textile machine element (1) according to the preceding claim 1 characterized by the fact that between the at least two spaced-apart pressing areas, at least a gap (7) is arranged, through which the male connecting element (4) and the female connecting element (5) are spaced apart from each other.

3. Textile machine element (1) according to the preceding claim 2 characterized by the fact thatthe male and female connecting element (4, 5) have at least three pressing areas (6) which are each separated from each other by at least one gap (7).

4. Textile machine element (1) according to one of the preceding claims characterized by the fact that In at least two of the pressure areas (6) opposing pressure forces (8) act on the male connecting element (4) and the female connecting element (5).

5. Textile machine element (1) according to one of the preceding claims characterized by the fact that the at least two pressing areas (6) are spaced apart from each other in a longitudinal direction (x) which corresponds to the main extension direction of the male connecting element (4).

6. Textile machine element (1) according to one of the preceding claims characterized by the fact that the female connecting element (5) comprises at least two legs (9) that encompass the male connecting element (4).

7. Textile machine element (1) according to claim 6 above characterized by the fact that the at least two legs (9) each encompass at least one of the pressing areas (6), wherein the pressing forces (8) of these pressing areas (6) have directional components that act oppositely to each other in a vertical direction (y) that runs perpendicular to the longitudinal direction (x) and that clamp the at least two legs (9) against each other in the vertical direction (y) in the direction of the center of the male connecting element (4).

8. Textile machine element (1) according to the preceding claim 7 characterized by the fact that the pressing forces (8) of the pressing areas (6) of the at least two legs (9) have a directional component in the longitudinal direction (x).

9. Textile machine element (1) according to one of the preceding claims characterized by thatthe textile machine element (1) is bounded in a width direction (z) that runs perpendicular to the length direction (x) and height direction (y) by two side surfaces (10), that the edges formed by the male and / or female connecting element (4, 5) with the side surfaces (10) are provided at least partially with a rounding (18) and / or a chamfer, and that by rounding (18) and / or chamfering at least a depression (19) is formed in at least one of the two side surfaces (10).

10. Textile machine element (1) according to claim 9 above characterized by that the edge of the male connecting element (4) to a first side surface (110) of the two side surfaces (10) is provided with a larger rounding (18) and / or chamfer than the edge of the female connecting element (5) to this first side surface (110), and thatthe edge of the male connecting element (4) to a second side surface (210) of the two side surfaces (10) is provided with a smaller rounding (18) and / or chamfer than the edge of the female connecting element (5) to this second side surface (210).

11. Textile machine element (1) according to one of the preceding claims 9 or 10 characterized by the fact that the male and / or the female connecting element (4, 5) is deformed in such a way that it forms at least a projection which extends into at least one recess (19) in at least one of the two side surfaces (10).

12. Textile machine element (1) according to one of the preceding claims characterized by the fact that the outer contour of the male connecting element (4) is larger than the inner contour of the female connecting element (5) by 0.001 mm to 1.0 mm, preferably by 0.005 mm to 0.1 mm, in at least one of the pressing areas (6) before pressing.

13. Method for manufacturing a textile machine element (1) according to one of the preceding claims characterized by that the male connecting element (4) is pressed with its outer contour into the inner contour of the female connecting element (5). and that by pressing at least two spaced-apart pressing areas (6) are formed in which the male connecting element (4) and the female connecting element (5) are in contact with each other, where the pressure areas (6) extend continuously in the width direction (z) over at least 50%, but preferably at least 75%, of the width of the textile machine element (1).

14. Method for manufacturing a textile machine element (1) according to one of the preceding claims characterized by the fact that the first section (2) and the second section (3) of the textile machine element (1) are each manufactured as a single part.

15. Method for manufacturing a textile machine element (1) according to one of the preceding claims characterized by the fact that an assembly force applied to crimp the male connecting element (4) and the female connecting element (5) is measured and preferably documented.

Images