阅读说明：本技术 间隔织物 (Spacer fabric ) 是由 M.基伦 O.马修斯 K.希尔伯特 于 2018-12-20 设计创作，主要内容包括：说明了一种间隔织物(1),其带有第一覆盖层(2)、第二覆盖层(3)且在该第一覆盖层和该第二覆盖层之间带有间隔纱线组件(4)。期望创造一种用于间隔织物的另一应用可能性。对此设置成,覆盖层(2,3)中的至少一个设有网眼套圈(6)。(A spacer fabric (1) is described with a first cover layer (2), a second cover layer (3) and a spacer thread assembly (4) between the first and the second cover layer. It is desirable to create a further application possibility for spacer fabrics. In this case, at least one of the cover layers (2,3) is provided with a mesh collar (6).)

1. Spacer fabric (1) with a first cover layer (2), a second cover layer (3) and with a spacer yarn assembly (4) between the first and the second cover layer, characterised in that at least one of the cover layers (2,3) is provided with a mesh loop (6).

2. The spacer fabric of claim 1, wherein the spacer fabric is configured as an abrasive carrier.

3. Spacer fabric according to claim 1 or 2, wherein the predetermined surface area (8) of the cover layer (2) provided with the mesh loops (6) is free of mesh loops (6).

4. The spacer fabric according to claim 3, wherein the predetermined face area (8) is abrasive-dust permeable.

5. The spacer fabric according to any one of claims 1 to 4, wherein the spacer yarn assemblies (4) are permeable to abrasive dust.

6. The spacer fabric according to any one of claims 1 to 5, wherein a yarn-free region (9) is provided in the spacer yarn assembly (4), which forms a flow channel.

7. The spacer fabric according to any one of claims 1 to 6, wherein the spacer yarn assemblies (4) have regions with different yield.

8. The spacer fabric according to any one of claims 1 to 7, characterized in that the spacer yarn assemblies (4) form areas with different spacing between the two cover layers (2, 3).

9. The spacer fabric according to claim 8, wherein the spacer yarn assembly (4) is profiled at least one cover layer.

10. The spacer fabric of claim 9, wherein the profile has a curved surface.

11. The spacer textile according to one of claims 1 to 11, characterized in that the first cover layer (2) and the second cover layer (3) are configured as a knitted fabric, wherein the mesh loops (6) are configured as loops of the knitted fabric.

12. The spacer fabric according to any one of claims 1 to 11, wherein one cover layer (3) forms an abrasive fixed velcro layer and the other cover layer (2) forms a disc fixed velcro layer.

13. Spacer fabric according to any one of claims 1 to 11, wherein one cover layer (3) is provided with abrasive material (7) and the other cover layer (2) forms a disc-fixed velcro layer.

14. The spacer textile according to any one of claims 1 to 13, wherein at least a portion of the mesh loops (6) are configured to be electrically conductive.

Technical Field

The invention relates to a spacer fabric (Abstandtextile) with a first cover layer, a second cover layer and a spacer thread arrangement between the first cover layer and the second cover layer.

Background

The two cover layers are interconnected by a spacer yarn assembly. The spacer yarn assembly thus fulfils two functions. In one aspect, the spacer yarn assembly defines a defined spacing between the two cover layers. On the other hand, the spacer yarn assembly may be compressed to such an extent that the spacing between the two cover layers may be at least locally varied.

Disclosure of Invention

The object of the invention is to create a further application possibility for spacer fabrics.

This object is achieved with a spacer fabric of the type mentioned at the outset in that at least one of the cover layers is provided with an eyelet (abwurfschlink).

The mesh loops form part of a velcro (Klettschlaufe, sometimes called velcro or hook and loop fastener), that is to say a part of a velcro (Klettverschluss, sometimes called velcro or hook and loop fastener) or a velcro connection (Klettverbindung, sometimes called velcro or hook and loop fastener). It is thus possible to connect the spacer fabric to the other elements via the cover layer provided with the mesh collar, in order to provide the elements, for example, with a yielding layer, wherein the yielding layer can be easily fitted and removed again.

In a preferred embodiment, the spacer fabric is designed as an abrasive carrier (schleifmitelstr ä ger), it is therefore possible to arrange an abrasive on one side of the spacer fabric and on the other side of the spacer fabric, for example, an abrasive disk (Schleifteller), which is generally rigid and non-yielding, so that the spacer fabric has the advantage that a certain yielding (nachgiebkeit) is produced between the abrasive and the abrasive disk.

In a preferred embodiment, it is provided that a predetermined surface area of the cover surface provided with the mesh collar is free of mesh collar. Thus, the predetermined face area is more breathable than the area provided with the mesh collar. This improves the transport away of the abrasive dust.

It is particularly preferred here that the predetermined surface area is abrasive-dust-permeable. Not only air but also abrasive dust can pass through a predetermined area. The abrasive dust can then migrate into or out of the interior of the spacer fabric, so that it is not or only slowly added (zusetzen) to the abrasive layer. The abrasive may then have a longer service time.

In a preferred embodiment, it is provided that the spacer thread component is wear-resistant. The swarf may then continue to migrate within the spacer yarn assembly, for example from the area permeable to swarf on the abrasive side to the exit area on the opposite side of the spacer fabric.

In a preferred embodiment, it is provided that a yarn-free region is provided in the spacer yarn arrangement, which forms the flow channel. The flow channel then forms a path with a relatively low resistance to the abrasive dust, thereby further improving the transport away of the abrasive dust.

In a preferred embodiment, the spacer thread elements can have regions with different yield. Different yields may be utilized for specific grinding tasks. For different yields, a region of the spacer yarn assembly may for example be provided with a larger number of spacer yarns than other regions. It is also possible to use areas with different spacer yarns, for example more or less rigid spacer yarns.

In a preferred embodiment, it is provided that the spacer thread arrangement forms regions with different distances between the two cover layers. The spacer yarns then define different thicknesses of the spacer fabric. The different thicknesses may be successive in the direction of production of the spacer fabric. However, it is also possible to arrange the different thicknesses side by side transversely to the direction of production.

In this case, the spacer thread arrangement preferably forms a contour on at least one cover layer. The profile may for example be flat, e.g. forming a continuous thickness increase or decrease.

In this case, the contour preferably has a curved surface. The curved face may for example form the surface of a part of a spherical cap. This is advantageous for some grinding tasks.

Preferably, the first and second cover layers are designed as knitted fabrics, wherein the mesh loops are designed as pile loops (polschlinks) of the knitted fabrics. The spacer fabric is thus a spacer knit. The mesh cage can then be produced simultaneously with the production of the cover layer, which considerably simplifies the production. For the production of loops, Jacquard systems (sometimes referred to as Jacquard systems) can be used, for example, in warp knitting machines.

In a preferred embodiment, it is provided that one cover layer forms an abrasive fastening velcro layer (Klettschicht, sometimes referred to as velcro layer or velcro layer) and the other cover layer forms an abrasive disk fastening velcro layer. The spacer fabric forms part of a multilayer system in which the spacer fabric is first applied to the grinding disc and then the grinding element provided with abrasive material, in short a grinding wheel, is applied to the spacer fabric.

In an alternative embodiment, it can be provided that one cover layer is provided with abrasive material and the other cover layer forms the grinding disk fixing velcro layer. In this case, the spacer fabric is directly coated with the abrasive material and can be fixed at the grinding disc on its other side.

In a preferred embodiment, at least a part of the mesh collar is electrically conductive. It is therefore possible to directly dissipate the electrostatic energy which is formed in some cases during grinding (Schleifen) via the spacer fabric, so that higher charging can be avoided.

Drawings

The invention is described below with reference to the drawings according to a preferred embodiment. Wherein:

FIG. 1 shows a top view of a spacer fabric, an

FIG. 2 illustrates a cross-sectional view of one embodiment of a spacer fabric.

Detailed Description

Fig. 1 and 2 show a spacer fabric 1 with a first cover layer 2, a second cover layer 3 and a spacer yarn assembly 4 between the first and the second cover layer. The spacer yarn assembly has spacer yarns 5, which spacer yarns 5 are arranged between the first cover layer 2 and the second cover layer 3. The spacer yarns 5 may, as presented, have an inclination with respect to the two cover layers 2, 3. But the spacer yarns may also (not present) be directed substantially perpendicular to the cover layer. The spacer yarns 5 may also have different directions between the cover layers 2, 3.

At least one of the cover layers, in the present case the upper cover layer (in relation to the illustration of fig. 2), is provided with a mesh ferrule 6.

The spacer fabric 1 is in the present case designed as a spacer knit (abstandsgegerke) in which the eyelet loops 6 are designed as loops. The mesh collar 6 thus forms part of a velcro loop, i.e. a velcro fastening.

The mesh ferrule is arranged for co-action with a so-called hook strip (Hakenband) or hook element, i.e. a strip or element provided with relatively small barbs which hook when pressed together with the mesh ferrule and thus get a firm connection.

The production of the mesh loops can be carried out in warp knitting machines by means of Jacquard bars (Jacquard-Barren, sometimes referred to as Jacquard bars), as is known, for example, in the production of terry applications.

In the present case, the spacer fabric 1 is configured as an abrasive carrier. The spacer fabric 1 has on the outside of its lower covering layer 3 an abrasive material 7, which is formed, for example, from a plurality of abrasive grains or abrasive particles, which are fixed, for example, by adhesive bonding, to the lower covering layer 3.

As can be seen from fig. 1 and 2, the predetermined surface area 8 of the upper covering layer 2 is free of mesh loops 6. The predetermined surface area is on the one hand more permeable to air than the area provided with the mesh collar 6. But on the other hand the predetermined face area is also abrasive-dust permeable.

The cover 3 provided with the lower part of the abrasive 7 is likewise air-permeable and abrasive-dust-permeable.

The spacer yarn assembly is also abrasive-dust permeable. For this purpose, the spacer threads 5 have a corresponding spacing from one another.

Additionally, a region 9 without yarn is provided in the spacer yarn assembly, which region forms a flow channel. The yarn-free region 9 may coincide with the predetermined face region 8 without mesh loops. However, the yarn-free region can also connect other regions of the lower cover layer 3 to the predetermined surface region 8 without the mesh cage 6, so that a still better removal of the wear debris is achieved.

The flow channel 9 is enlarged here. The elasticity of the spacer fabric should not be significantly influenced by the flow channel 9.

However, it can be provided that the spacer thread assemblies have regions with different yield. Thus, even when the surface pressure acting on the opposite side is constant, different grinding results can be obtained on the side provided with the abrasive 7. This is desirable for some grinding tasks.

The different yields can be produced by selecting the density of the spacer yarns 5 differently. The yield is greater in the case of a lower density of the spacer yarns than in the case of a higher density of the spacer yarns.

The different yield may also be produced by applying different spacer yarns 5, for example thicker spacer yarns and thinner spacer yarns, the deformability of which differs.

In a manner not shown in greater detail, it can also be provided that the spacer thread assemblies 4 form different spacings between the two cover layers 2, 3. The two cover layers 2,3 do not extend parallel to one another over their entire extent but can have a shape other than planar. In other words, at least one of the cover layers 2,3 can be profiled, i.e. profiled. The profile may for example have a curved surface. The curved surface may for example be the surface of a part of a spherical cap.

As is schematically represented in fig. 2, the assembly of the mesh collar 6 can interact with an abrasive disc 10 which has rows of barbs 11 on its side facing the spacer fabric 1, which barbs can hook up with the mesh collar 6.

The spacer fabric 1 is then fixed at the abrasive disc 10 with the mesh ferrule 6 forming the desired velcro connection with the barb 11.

The abrasive carrier in such a case suitably has perforations of the face type.

In a construction variant that is not represented in greater detail, the spacer fabric can also be used in a multilayer system in which the abrasive is not applied directly to the spacer fabric 1, but rather to an abrasive carrier separate from the spacer fabric, which is then in turn connected to the spacer fabric 1 via a velcro connection. In this case, the lower cover layer 3 also has an assembly of mesh loops 6.

The spacing yarn assembly is not flat in its yield balance, which positively affects the grinding results. The air-permeable pattern of the mesh collar 6 effects the suction of the abrasive dust.

The mesh collar 6 may be made of the same material as the cover layers 2, 3. However, it is also possible to use other materials, for example PES, PA, PP, PE, or also special materials, such as metal wires or yarns provided with metal. In the last case, at least a part of the mesh collar is electrically conductive, so that an electrical charge which may be able to form during grinding can be dissipated.

For producing the spacer fabric 1, a double-needle-bar warp knitting machine can be used in which the guide bar (Legeschiene) for the guide threads of the mesh loops 6 is Jacquard-controlled (Jacquard-getuert, sometimes referred to as Jacquard-controlled) in order to obtain a targeted pressing, or alternatively a ground-yarn bar (grundbeebarre) can be used in order to obtain a full-face mesh loop. This makes it possible to define at which points the mesh loops are to be formed.

In controlling the one or more bars laying the spacer yarns 5, it can be defined where to place the yarn-free zones 9 forming the flow channels. The area may also be defined, for example, to fold the spacer fabric.