DE102013101359A1 - Method for producing e.g. two-ply knitted fabric, in circular knitting machine to manufacture cover for e.g. car interior trim, involves inserting inlaid material into gap during knitting process, where material comprises fiber bundles - Google Patents

Abstract

The method involves forming a gap by spacing an upper fabric side (1) apart from a lower fabric side (2), and inserting an inlaid material (3) into the gap during knitting or working process, where the inlaid material comprises unconnected fiber bundles i.e. fiber balls. A knitting machine is provided with two intersecting rows of needles on an intersection line. The inlaid material is primarily fed across the intersection line and/or at a needle path relative to the rows of needles, and a touching device is moved into the gap. Independent claims are also included for the following: (1) a knitting machine comprising intersecting rows of needles on an intersection line (2) a method for re-equipping a knitting machine.

Description

The present invention relates to a method for producing a knit fabric or mesh material with integrated fiber filler and its use, a corresponding machine and a method for converting a knitting machine.

Mesh fabrics are well known in the art. Also, such substances are known which have an insert thread between an upper and a lower side to increase the thickness or its volume and to change the tactile impression. Moreover, it is known to laminate fabrics with nonwoven or foam to achieve certain tactile as well as thermal and other properties.

Also, it is known from another art to fabricate sheaths from fabrics and fill them with loose fill material, such as down pillows or blankets.

The object of the present invention is to provide a knit fabric that allows a larger volume or a greater change of the tactile impression with firmly incorporated filler. In addition, the production and in particular the supply and provision of the corresponding raw materials should be as simple and inexpensive as possible.

This object is achieved for example by a method according to claim 1, and a mesh according to claim 9, a use according to claim 10, a cover according to claim 11 and a knitting or knitting machine according to claim 12 and a method for retooling a known knitting or knitting machine according to claim 15.

In procedural terms, the invention is achieved by a method for producing a knit fabric in the form of a double-knit fabric or knitted fabric on a knitting or knitting machine. The knitted or knitted fabric has an upper and a lower textile side, which are spaced apart to form a gap on. An insert material is introduced into the space during knitting or knitting, the insert material containing unconnected fiber bundles. In particular, it can also consist of such fiber bundles.

By feeding the insert material, the cross-section or the thickness of the knitted or knitted fabric can be increased and the tactile property can be changed. Also thermal properties and others can be influenced by it. The insert material can be introduced in an innovative and simple way during the production of the upper and lower textile side and, if appropriate, corresponding compounds and incorporated directly into the fabric or knitted fabric. According to the invention, the insert material can be placed so that it is incorporated during knitting or knitting between the upper and lower textile side. It is thus at least largely included.

Unconnected fiber bundles are understood to be bundles of one or more fibers that are not connected to other bundles of fibers and have an extension in three spatial directions. Although the individual bundles can interlock with each other and interact accordingly, they are not firmly interconnected, and in particular are not endless or flat. In the free state, for example, such fiber bundles can have edge lengths of in particular more than 2 mm and in particular less than 15 mm, relative to a cuboid framing them. Such fiber bundles are in particular composed of one or more crimped fiber (s). Unconnected fiber bundles are characterized by the fact that they can be separated without cutting the material, in particular not to cut, to have. These are in particular fiberballs to understand, as for example from the EP 0 203 469 B1 are known. But other appropriate materials are conceivable and suitable. The decisive factor here is that it is compressible voluminous material with appropriate air inclusions, which is not endless and consists of one or more fiber (s), in particular crimped fiber (s).

Such a procedure makes subsequent filling steps unnecessary. Even a lamination or other can be avoided and thus operations can be saved. In addition, the insert material, for example, by creating appropriate connections between textile top and bottom side, in a simple manner and effectively so fixed in terms of its location that it is safe to lie there and effects, as they are known, for example, in spacious staked coffered ceilings and lead to undesirable results, for example, areas without insert material, can be avoided.

Thus, during knitting or knitting or knitting of the upper and lower textile side, corresponding desired limitations against slipping or shifting of the insert material can be provided. This is knitting technically easy to implement. It is also possible to make individual connecting points or webs or corresponding cassettes. Here are the distances Such connections between upper and lower textile side as well as their permeability within wide limits freely selectable. In particular, for example, without further operation cassette cassettes with edge lengths in the range between 0.5 and 20 cm can be selected.

By such compounds, a local constriction of the fabric or knitted fabric can be effected, which leads to partially desired optical and tactile properties.

It is also possible to provide additional elements in the intermediate space. Thus, for example, in addition to corresponding connections between textile upper and lower side and filling or spacer threads are also introduced.

With particular advantage, the insert material according to claim 2 includes fiberballs. Fiber balls are known from the prior art and are characterized by their particularly high volume with low weight and material usage and low cost. For example, you are in the EP 0 203 469 B1 disclosed.

With particular advantage, the insert material consists of unconnected fiber bundles, in particular fiberballs. This is particularly advantageous since then the advantages of the invention are particularly evident.

With particular advantage, a knitting machine is used which has at least two rows of needles crossing on a crossing line, and the insert material is supplied predominantly via the intersection line and / or at least one needle path. A needle path is understood to be the path that the needle or needles of a row of needles make when crossing or knitting.

Such two rows of needles have the usual knitting machines. These are, for example, the needles of the cylinder and a dial.

This is the case for example with circular knitting machines or knitting machines with just extending needle bed.

Advantageously, the insert material is largely spent in the room, which extends on the needle beds facing side of the two rows of needles. Thus, the insert material is advantageously spent in the direction of the finished Stoffabtransportes or on the side of the needles on which the finished fabric is removed. This takes place advantageously from the other side of the crossing line or needles, since from there a material feed can be provided in a simpler manner. A material supply against the material removal direction is difficult to provide in practice.

If the material is brought to such a space, which extends on the side of the Stoffabtransportes the crossing line and / or the needles, it can be easily enclosed without further precautions in the space between textile top and bottom layer.

In addition, the insert material is once spent accordingly, knitting technically basically no further precautions to be taken. However, optimizations can certainly be carried out.

With particular advantage, the insert material is at least partially reversibly reduced in volume introduced into the space. Such an at least partially reversible reduction of the volume provides for easier processing and less hindrance to the knitting process and increases the volume of material that can be introduced or the volume that is possible in the final state or the final thickness of the knitted or knitted fabric.

Such a reduction in volume can be accomplished, in particular, by compression in various ways known in the art. Fiber bundles used according to the invention, in particular fiberballs, can be reversibly reduced in volume very reversibly. This can be done for example by performing by appropriate cross-sectional tapering or corresponding mechanical compression, for example by a cylinder or the like.

With particular advantage, the insert material according to claim 6 is supplied using compressed air. Under such a feeder is to be understood a supply into the space or at the place of introduction between the upper and lower textile layer. Advantageously, however, the insert material can also be supplied by compressed air over further distances. Thus, for example, a compressed air assisted distribution or supply to the corresponding knitting or knitting machines is conceivable. Thereby, the material transport can be carried out continuously and in particular be realized without much effort.

With particular advantage, the insert material is thus supplied using compressed air and in particular spent over the intersection line and / or at least one needle path.

With particular advantage, a Einreifvorrichtung is provided which the insert material in the Gap leads. Such a picking device is in particular moved or movable along the intersection line or is moved accordingly. It depends on a relative movement between the insertion device and needles. The needles can be moved accordingly. Movement along the intersection line does not mean that the puncture device would move relative to the needles on the intersection line. This would rather lead to a collision with the needles. The Einreifvorrichtung is only parallel, ie, along the intersection line relatively moved. The insertion device is in particular designed such that the insertion material positioned on the side of the crossing line facing away from the substance removal faces over the crossing line and / or at least one needle path and into the space facing the needle beds or the substance removal from the needles , grazes. For this purpose, the Einreifvorrichtung example, funnel-shaped in that it conforms to the needles and tapers against their relative direction of movement, so that they roams the material with their movement in the room. Also, the Einreifvorrichtung, just to save space, easier to run. So it can be designed, for example, as a pipe or rod, square or round. The dimensions are an extension in the dimensions in cross section perpendicular to the intersection of 2 to 15 mm, in particular from 3 to 8 mm. As a length, in particular bent along the intersection line, in particular 1 to 10 cm, in particular two to five cm offer.

Advantageously, therefore, a puncture device is moved relatively so that the side facing away from the fabric removal side of the intersection line or needles einstreift inserted insertion material into the room and over the intersection line or at least one needle path. In particular, the puncture device is thus moved together or coordinated with a feed of insert material. Thus, for example, a yarn feeder can be converted accordingly and equipped with a feed of insert material and a corresponding Einreifer.

With particular advantage, the insert material undergoes a cross-sectional increase in the intermediate space after introduction. This is particularly the case when the insert material is introduced with a partially reduced volume and the textile top and bottom or corresponding compounds are designed so that the insert material can expand in its volume again. By such an increase in the volume and stresses and / or constrictions can be introduced into the fabric or knit by the expansion of the insert material is partially limited. This can be achieved for example by appropriate dimensioning of the connections between the textile layers.

In particular, however, the introduced amount of the insert material and the gap or the connections between the textile upper and lower layer is such that the gap is completely filled.

The object is achieved according to the invention by a knit fabric in the form of a double-surface knitted or knitted fabric with an upper and a lower textile side, which are spaced apart to form a gap and is enclosed in the insert material, wherein the insert material contains unconnected fiber bundles, in particular consists thereof , With respect to the unconnected fiber bundles and the other features, the above applies. The further advantageous features can be implemented accordingly in the mesh. In particular, the mesh fabric can have corresponding connections between the upper textile layer and the lower textile layer in order to prevent the slipped fiber bundles from slipping to a desired extent. Also constrictions may be present. Also, the volume of the fiber bundles can be partially reduced or their expansion partially limited.

Fiber bundles are enclosed according to the invention in the space between the upper textile layer and the lower textile layer. As a result, a novel mesh fabric with improved properties is given in a simple manner.

The object is also achieved by using a mesh fabric according to the invention for the production of covers, in particular for automobile panels, seats, mattresses and pads, seating and upholstered furniture or chairs with covers, wherein the mesh fabric is used as a reference. Due to its properties, the mesh fabric is particularly suitable for these uses.

The object is also achieved by a cover, in particular for automotive interior trim, seats, mattresses and pads, seating and upholstered furniture, bedding, chairs comprising a mesh fabric according to the invention.

The object is also achieved by a knitting or knitting machine having at least two needle rows crossing on a crossing line and a supply for unconnected fiber material over the crossing line and / or at least one needle paths for feeding in a space of a double-surface knitted or knitted fabric with an upper and lower textile side under training of the Between space are spaced apart, during the formation of the double-knit fabric or knitted fabric. By means of such a knitting or knitting machine, the method according to the invention can be implemented or the knit fabric according to the invention can be produced particularly advantageously. The features described above, in particular with regard to the method, in particular with regard to the introduction of the insert material, can be correspondingly implemented objectively. In particular, it is advantageous to provide a compressed air-based supply. In particular, it is furthermore advantageous to provide a picking device moved along the intersection line for the purpose of inserting the insert material into the intermediate space. Such a puncture device can, in particular as described above, ensure in a particularly simple and reliable manner that the insert material is introduced into the interspace and in particular is brought over the intersection line or needle paths. With regard to the subject formation of the puncture device applies what has been said above. In particular, a corresponding control is provided which controls the movement of the insertion device such that it strips the otherwise supplied insert material according to the location of the meshing.

With particular advantage, a device for compressing the fiber material prior to feeding into the gap or before the intervention of the insertion device is provided. However, it is also conceivable, the Einreifvorrichtung form so that it causes the compression in whole or in part. Thus, for example, compressed air-based delivery of insert material may be provided such that it opens into the insertion device and the insertion device is sealed in such a way that compression of the insertion material takes place in the area of the insertion device by the compressed air-based supply.

A corresponding control is advantageously provided.

In particular, a compressed air-based feeding system of the insert material for knitting or knitting machine is provided. In particular, this results in an outlet opening moved together or coordinated with the coating device.

The object is also achieved by a method for retrofitting a knitting or knitting machine having at least two needle rows crossing on a crossing line, characterized in that a supply for unconnected fiber material across the intersection line and / or at least one needle paths away for feeding into a space of a double-faced knitted or knitted fabric having upper and lower textile sides which are spaced apart to form a space during formation of the double-surface knitted or knitted fabric. Such a supply can be realized as described above, in particular it can include a coating device. Otherwise or in addition, for example, a corresponding tube or a corresponding hose can be provided, which in particular represents compressed air-based feeding of the insert material. In particular, a suture layer or thread guide of a corresponding knitting or knitting machine can be converted accordingly, so that it leads a tube or a tube through which the insert material is supplied, and in particular a Einreifvorrichtung leads. As a result, in particular a compressed air-based supply can be provided.

Further advantageous embodiments of the method for retrofitting are advantageously carried out according to the above-mentioned objective and procedural features.

Further advantageous features and embodiments are to be illustrated purely by way of example and not descriptively with reference to the following purely schematic drawings. Showing:

1 a view of a cross section through a mesh according to the invention;

2 a plan view of a mesh according to the invention;

3 a cross section through a circular knitting machine according to the invention;

4 a view of a circular knitting machine according to the invention and

5 a view of an alternative circular knitting machine according to the invention.

1 shows a cross section through a mesh fabric according to the invention. To recognize are an upper textile layer 1 and a lower textile layer 2 with fiberballs arranged in between 3 ,

2 shows a prospect of a mesh fabric according to the invention 6 , To recognize is an upper textile layer 1 , Also indicated are connections 5 between upper and lower textile side.

These connections 5 form a boundary that the fiberballs 3 secures against slipping.

3 shows a cross section through a circular knitting machine according to the invention.

To recognize are a dial 9 and a cylinder 10 with rib needles 7 and cylinder needles 8th , These intersect at a crossroads 4 , which can be seen in cross section only as a crossing point. Also to be recognized is a puncture device 11 , which has a feed tube 12 fed fiberballs 3 on the removal of the substance 6 facing side of the crossing line 4 over the needle paths of the needles 7 . 8th spends.

4 shows a plan view of a circular knitting machine according to the invention. The intersection line running along the rounding of the circular knitting machine can be seen 4 , at the Rippnadeln 7 and cylinder needles 8th cross.

Furthermore, a compressed-air-based fiber ball feed can be seen 12 and a puncture device 11 , The piercing device 11 and the compressed-air feed 12 be by turning the dial 9 and the cylinder together with the needles 7 . 8th clockwise relative to the intersection line 4 moved counterclockwise.

It can be seen that the insertion device 11 is funnel-shaped or tapered and attached to the needles 7 . 8th clings, so by their movement and shape by the feeder 12 fed fiberballs 3 can be attacked accordingly.

5 shows a plan view of an alternative circular knitting machine according to the invention. One can see a crossing line running along the rounding of the circular knitting machine 4 , at the Rippnadeln 7 and cylinder needles 8th cross.

Furthermore, a compressed-air-based fiber ball feed can be seen 12 and a puncture device 11 , The piercing device 11 and the compressed-air feed 12 be by turning the dial 9 and the cylinder together with the needles 7 . 8th clockwise relative to the intersection line 4 moved counterclockwise.

It can be seen that the insertion device 11 is designed as a tube or rod. It has a diameter of 5 mm and a length of 3 cm. It is designed so that it is slightly bent until it touches the needles 7 . 8th clings, so that by their movement through the feed 12 fed fiberballs 3 can be attacked accordingly.

LIST OF REFERENCE NUMBERS

1

upper textile layer

2

lower textile layer

3

fiber balls

4

Line crossing

5

Connection between upper textile layer and lower textile layer

6

material

7

dial needle

8th

cylinder needle

9

Needle bed / dial

10

Needle bed / cylinder

11

Once frost device

12

feed

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0203469 B1 [0008, 0013]

Claims (15)

Method for producing a knit fabric ( 6 ) in the form of a double-knit fabric or knitted fabric on a knitting or knitting machine with an upper ( 1 ) and lower ( 2 ) textile side, which are spaced apart to form a gap, in the insert material ( 3 ) during knitting or knitting, characterized in that the insert material ( 3 ) contains unconnected fiber bundles. A method according to claim 1, characterized in that insert material contains fiberballs. Method according to one of the preceding claims, characterized in that the insert material consists of unconnected fiber bundles, in particular fiber balls. Method according to one of the preceding claims, characterized in that the knitting or knitting machine at least two on a crossing line ( 4 ) crossing rows of needles ( 7 . 8th ) and the insert material ( 3 ) predominantly via the intersection ( 4 ) and / or at least one Nadelweg away is supplied. Method according to one of the preceding claims, characterized in that the insert material ( 3 ) is at least partially reversibly reduced in volume introduced into the space. Method according to one of the preceding claims, characterized in that the insert material is supplied by compressed air. Method according to one of the preceding claims, characterized in that the insert material by a along the intersection line ( 4 ) moving relative to the rows of needles Einreifvorrichtung ( 11 ) is guided into the intermediate space. A method according to claim 7, characterized in that the at least one insert material ( 3 ) undergoes a cross-sectional increase in the space. Mesh fabric ( 6 ) in the form of a double-knit fabric or knitted fabric with an upper ( 1 ) and lower ( 2 ) textile side, which are spaced apart to form a gap, in the insert material ( 3 ), characterized in that the insert material ( 3 ) contains unconnected fiber bundles, in particular consists thereof. Use of a mesh fabric ( 6 ) according to claim 9 for the production of covers in particular for automotive interior trim, seats, mattresses and mattresses, seat and upholstered furniture, bedding, chairs with covers, wherein the mesh or woven fabric is used as a cover, and wherein in particular the extent of the at least one Strangs only after shaping and in particular application of the mesh or woven fabric takes place. In particular for automotive interior trim, seats, mattresses and mattresses, upholstered and upholstered furniture, bedding, upholstered chairs, including a mesh fabric ( 6 ) according to claim 9. Knitting or knitting machine comprising at least two on a crossing line ( 4 ) crossing rows of needles ( 7 . 8th ) and a feed for unconnected fiber material ( 11 . 12 ) over the intersection ( 4 ) and / or at least one needle path for feeding into a space of a double-surface knitted or knitted fabric with an upper ( 1 ) and lower ( 2 ) textile side, which are spaced apart to form the gap, during the formation of the double-surface knitted or Gewirkks. Knitting or knitting machine according to claim 12, characterized in that the feed is based on compressed air and the feed in particular one along the crossing line relative to the needle rows ( 7 . 8th ) has moving Einreifvorrichtung for introducing the fiber material into the gap and / or over at least one Nadelweg away. Knitting or knitting machine according to one of the preceding claims, characterized in that it comprises a device for compressing the fiber material before being fed into the intermediate space. Method for converting a knitting or knitting machine comprising at least two on a crossing line ( 4 ) crossing rows of needles ( 7 . 8th ), characterized in that a feed for unconnected fiber material ( 3 ) over the intersection ( 4 ) and / or at least one needle path for feeding into a space of a double-surface knitted or knitted fabric with an upper ( 1 ) and lower ( 2 ) textile side, which are spaced apart to form the gap, during the formation of the double-sided knitted fabric or Gewirkks is provided.

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