JP2008544102A - Method for knitting a product using a circular knitting machine having a needle cylinder which can be rotated in both directions of rotation - Google Patents

Abstract

A method of knitting a product using a circular knitting machine having a needle cylinder that can be rotated in both rotational directions, particularly a high-definition circular knitting machine. The method is such that at least one region of the product (A, B, C, D) determines the number of active needles of a group of adjacent needles, the last of the knitted fabric formed by a particular needle of a group of needles. Needle that has transferred the loop of the knitted fabric at least once by transferring the loop to the adjacent needle of the group of needles, and thus forming at least a portion of the next row of knitted fabric with the needle that continues to operate Is to be manufactured by excluding from the knitting. The product area (A, B, C, D) is obtained by rotating a row of knitted fabric obtained by operating a needle cylinder by rotational movement about its own axis in one direction of rotation. Manufactured by alternately and continuously producing rows of knitted fabric obtained by actuating a needle cylinder by a rotational movement around.

Description

  The present invention relates to a circular knitting machine having a needle cylinder that can be rotated in both rotational directions, and more particularly to a method for knitting a product using a high-definition, high-gauge circular knitting machine.

  Knitting machines for hosiery etc. are known which can transfer a loop of knitted fabric from the needle forming it to an adjacent needle. This type of machine is disclosed, for example, in WO 2002/070799.

  Until now, the technology of moving the loop of this knitted fabric has been mainly used to obtain open work of products. An example of the application of this technology for open work is described in WO 2005/080653 by the same applicant.

  Also known are methods of knitting a molded product using a circular knitting machine based on an increase in the number of working needles in some areas of the product. This kind of technique has the disadvantage that it is only possible to increase the number of working needles, so that the knitting of these areas of the product has to be started from the side which has to be knitted with a minimum number of needles. This fact limits the possible knitting processes and the shapes that can be obtained with this technique.

  Circular knitting machines with needle cylinders that can be actuated by rotational movement about their axes in both rotational directions are also known. This machine takes advantage of the fact that the needle cylinder can be operated in both directions of rotation, for example, a product having a region such as an undershirt, a shoulder strap such as a body suit, or a crotch region such as an underpant or body suit. Their ends are already finished and can be manufactured without the need for subsequent cutting and / or finishing operations.

Even with this machine, the fact that it is only possible to increase the number of needles that operate during knitting does not always produce a product without the need for cutting and / or finishing. For example, if it is necessary to have an area of knitted fabric knitted with a gradually increasing number of stitches during manufacture and then a knitted area knitted with a gradually decreasing number of stitches, the desired shape is obtained. Thus, these last regions can conventionally be obtained by cutting the product after it has been machined.
International Publication No. 2002/070799 Pamphlet International Publication No. 2005/080653 Pamphlet

  The intent of the present invention is to provide a method of knitting a product using a circular knitting machine having a needle cylinder which can be rotated about its own axis in both directions of rotation, in particular the side part where the knitting of the product is started It is an object of the present invention to provide a method using a high-definition circular knitting machine capable of producing a product having a molding region that does not necessarily require cutting or finishing operations.

  Within the scope of this intention, the object of the present invention is to be able to produce a product having a forming region without the need for cutting or finishing operations, thereby reducing the consumption of yarn for producing the product. Is to provide a way.

  Another object of the present invention is to provide a method which can be used to obtain a product having a forming area which is manufactured using a circular knitting machine with high definition, preferably approximately 16 to 50 needles per inch. is there.

  This intent, as well as these and other objectives that will become apparent below, is achieved by a method of knitting a product using a circular knitting machine, in particular a high-definition circular knitting machine, having a needle cylinder that can be rotated in both directions. And at least one region of the product includes the number of active needles of a group of adjacent needles, the last loop of a knitted fabric formed by a particular needle of the group of needles, Produced by removing at least one particular needle from the knitting while forming at least part of the next row of the knitted fabric with the needle that continues to operate, thus at least once by transferring to the adjacent needle. The region of the product is a region of a row of knitted fabric obtained by operating the needle cylinder by rotational movement about its own axis in one rotational direction. By rotational movement around, characterized in that it is produced by preparing continuous alternating with rows of portions of the resulting knitted fabric by operating the needle cylinder.

  Further features and advantages of the present invention will become more apparent from the description of preferred but non-limiting embodiments of the method according to the present invention, illustrated as non-limiting examples in the accompanying drawings.

  Referring to the figures, the method according to the invention uses a circular knitting machine, preferably with a fineness or gauge in which the needle is approximately in the range of 16 to 50 per inch, eg internationally by the same applicant. It is provided with a needle cylinder of the type disclosed in the publication 2004/097092 pamphlet which can be actuated by rotational movement about its own axis in both rotational directions, for example Italian patent application MI 2004A001146 by the same applicant. To transfer a knitted fabric loop formed by one needle to an adjacent needle located beside one or the other side of the knitted fabric where the knitted fabric loop must be released It is intended to be performed using a circular knitting machine equipped with a needle and / or other elements.

  This method manufactures at least one region A, B, C, D of a product, ie product 1, with a group of adjacent needles, and the last loop of the knitted fabric formed by a particular needle out of the group of needles. By transferring to the adjacent one of the needles, the number of active needles of the group of needles is reduced at least once, and the knitting is continued while forming at least a portion of the next row of the knitted fabric with the needles that continue to operate in this way. The needle that released the ground loop is to be excluded from the knitting. Regions A, B, C, and D of the product 1 are the parts of the knitted fabric row produced by operating the needle cylinder by the rotational movement about the own axis in one rotation direction. It is manufactured by alternately and continuously producing the rows of the knitted fabric produced by operating the needle cylinder by the rotational movement of the knitted fabric.

  Preferably, the number of working needles of the group of needles knitting the areas A, B, C, D of the product 1 is formed by a specific needle of the group of needles located at at least one end of the group of needles It is reduced by transferring the last loop of the knitted fabric to an adjacent needle in a group of needles.

  It will be understood that the method according to the present invention is described in an embodiment for manufacturing a product such as a bodysuit, with reference to the drawings, and can also be used to manufacture other types of products.

  The product of FIG. 1 is made by starting knitting from below, i.e. from the crotch region of the bodysuit.

  Initially, the needles belonging to two groups of adjacent needles located in two sectors of the needle cylinder, spaced at an angle from each other about the axis of the needle cylinder, constitute the front and rear regions of the lower part of the bodysuit They are knitted to produce product areas E and F.

  Of the two groups of needles, the number of needles to be knitted is gradually increased so as to obtain a shape in which the widths of the front region E and the rear region F are gradually increased. The number of needles to be knitted out of the two groups of needles is increased by a method known per se using, for example, a needle selection device usually provided in a recent circular knitting machine.

  Preferably, the regions E and F are manufactured by operating the needle cylinder by alternating rotational movement about its own axis, and the needle cylinder is operated by rotational movement about its own axis in one rotational direction, thereby generating two groups of needles. The needle cylinder is actuated by rotational movement about its own axis in the opposite direction to the part of the row of knitted fabric of region E and region F produced by knitting the machine with one or more separate feeds or drops of the machine The two groups of needles are produced in succession alternately with portions of the knitted fabric row of region E and region F produced by knitting each with the same feed or drop of the machine. The direction of rotation of the needle cylinder is such that after the last of the two groups of needles moved for knitting has passed the feed or drop used, the yarn for forming the parts E and / or F is distributed. Inverted at the position where

  In this way, the ends of the parts E, F do not require cutting and / or finishing operations after the product has been removed from the machine.

  Details of the knitted fabric near one end of the portion F are shown in FIG.

  Subsequently, the cylindrical portion G of the product 1 is known per se by operating the needle cylinder by continuous rotational movement about its own axis and knitting almost all needles of the needle cylinder with one or more feeds or drops of the machine. It can be manufactured by the method. In this step, some of the needles in the needle cylinder can be excluded from knitting to obtain a special pattern effect or shape in this area of the product.

  In addition, while the part G is manufactured, the cups H and I in the brassiere region of the bodysuit can be produced by a method known per se.

  After part G, areas A, B, C, D, which are product accessories that make up the shoulder strap of the bodysuit, are manufactured.

  These regions A, B, C, and D are each produced by a group of adjacent needles by gradually reducing the number of working needles of the group of needles. The number of working needles is determined by transferring the last loop of the knitted fabric formed by a particular needle of the group of needles to the adjacent needle of the same group of needles, thereby causing the knitting needle to continue to operate. While forming the next row portion, it is reduced by excluding the interrupted or transferred knitted loop from the knitting.

  The product areas A, B, C, D are the parts of the knitted fabric row produced by operating the needle cylinder by the rotational movement about its own axis in one direction of rotation. Manufactured by alternately and continuously producing rows of knitted fabric produced by actuating a needle cylinder by rotational movement.

  2 is an enlarged detail view of a region C near one side (left side in FIG. 1) of the side portion, and FIG. 3 is an enlarged detail view of the region C near the opposite side (right side in FIG. 1).

  2 and 3, the display of the region C is limited to knitting with 8 stitches for convenience, and the row of the knitted fabric is represented by reference numerals 1 to 6 in FIG. 2 and by reference numerals 11 to 16 in FIG. The Formation of the knitted fabric region C proceeds upward from the bottom in FIGS.

  With reference to FIG. 2, the reduction of the working needles forms column 1 in a manner known per se, for example as described in WO 2002/070799 (see FIGS. 5 and 6). Before starting the formation of the next row portion 22 of the knitted fabric among the row portions 21 of the knitted fabric formed by the needles N It is obtained by transferring.

  In this way, while forming the row portion 22 of the knitted fabric, the needles N forming the row 1 are excluded from the knitting, while the needles N forming the row 2 are knitted and the other of the group of needles. The needle N is also knitted, and a new loop 222 of the knitted fabric knitted together with the two loops 211 and 222 of the knitted fabric carried by the needle is formed, and the knitting is finished.

  Prior to starting a new portion 23 of the knitted fabric row, the knitted fabric loop 222 is interrupted or transferred from the needle N forming the row 2 to the adjacent needle N forming the row 3.

  While forming the row portion 23 of the knitted fabric, the needles forming the row 2 are also excluded from knitting, while the adjacent needles forming the row 3 are knitted and the other needles of the group of needles are also knitted. Then, a new loop 233 of the knitted fabric knitted together with the two loops 222 and 223 of the knitted fabric carried by the needle is formed, and the knitting is finished.

  The knitted fabric row portions 21 and 23 are manufactured by actuating the needle cylinder Cy by rotational movement about its own axis in one rotation direction, while the knitted fabric row portion 22 is in the opposite direction. It is manufactured by operating the needle cylinder Cy by rotational movement about its own axis.

  With reference to FIG. 3, the reduction of the working needles forms the row 16 in a manner known per se, for example as described in WO 2002/070799 (see FIGS. 5 and 6). The last loop 3116 of the knitted fabric of the knitted fabric row portion 31 formed by the knitting needles is transferred to the needle forming the row 15 before the formation of the next row portion 32 of the knitted fabric is started. Is obtained.

  In this way, while forming the row portion 32 of the knitted fabric, the needles forming the row 16 are excluded from knitting, while the needles forming the row 15 are knitted and the other needles in the group of needles. Is also knitted, forming a new knitted fabric loop 3215 knitted with the two loops 3116 and 3115 of the knitted fabric carried by the needle, and is the end of knitting.

  Prior to beginning the next row portion 33 of the knitted fabric, the knitted fabric loop 3215 is transferred from the needle forming the row 15 to the adjacent needle forming the row 14.

  While forming the row portion 33 of the knitted fabric, the needles forming the row 15 are also excluded from knitting, while the adjacent needles forming the row 14 are knitted and the other needles of the group of needles are also knitted. A new loop 3314 of the knitted fabric that is knitted together with the two loops 3215 and 3214 of the knitted fabric carried by the needle is formed, and the knitting ends.

  The knitted fabric row portions 31 and 33 are manufactured by operating the needle cylinder by rotational movement about its own axis in one rotation direction, while the knitted fabric row portion 32 is self-moving in the opposite direction. Manufactured by actuating the needle cylinder by rotational movement about its axis.

  The knitting of the region C is thus a group of needles that produce the region C by operating the needle cylinder by alternately moving around its own axis, to the desired number and depending on the shape required for this part. Proceed by reducing the number of working needles.

  Regions A, B and C are manufactured in a manner similar to that described with reference to region C.

  Needles that are excluded from knitting are drawn into the needle cylinder under the knitting end plane formed by the sinker so as not to interfere with the work of other needles or other elements of the machine.

  By proceeding in this way, it is possible to obtain a width that gradually decreases with respect to the regions A, B, C, and D, having end portions that do not require further finishing operations.

  For convenience in the specification, in the embodiment described above with reference to FIGS. 2 and 3, the number of groups of actuating needles creating region C is reduced prior to the start of each portion of the knitted fabric row. It was premised on letting. In practice, the number of actuating needles producing the regions A, B, C, D can be reduced for one or more continuous parts of the knitted fabric row, depending on the shape required for the region. In addition, when a shape having at least one decreasing width and increasing width of the region alternately is required, the number of needles to be knitted in the needle group used by a method known per se is determined according to the knitting process. It can be reduced in one step and increased in another step of the knitting process.

  At the end of the manufacture of areas A, B, C, D, the product is released from the needle and removed from the machine. As a variant, as an embodiment according to the method disclosed in the same applicant's Italian Patent Application No. MI2004A002495, the same circular knitting machine is used to join the two regions constituting the same shoulder strap or crotch. Thus, the product can be finished directly using the circular knitting machine used to produce it in this way.

  Although the method according to the invention has been described with reference to the production of a molded area of a bodysuit, it can be used to obtain a molded area in other products such as underpants, undershirts, tops or similar products. obtain.

  In the method according to the present invention, the product 1 can be manufactured by starting knitting from the upper end. In this case, the areas A, B, C, and D are, in a manner known per se, gradually increasing the number of needles of the needle group that manufactures the part, and instead of the two groups of needles that manufacture the areas E and F. May be made in accordance with the present invention by gradually reducing the last loop of the knitted fabric formed by the needles that are then excluded from knitting to the adjacent needles.

  In practice, in order to reduce the number of needles that operate in combination with the operation of the needle cylinder by rotational movement about its own axis in both directions of rotation, use a technique to transfer the loop of the knitted fabric from one needle to the adjacent needle. Therefore, it is possible to produce a product having a molding region that does not necessarily require cutting or finishing work regardless of the side where the product knitting starts, even if the product is a high-definition product. It has been found that the intended purpose is achieved.

  The method devised in this way can make many modifications and variations, all of which are within the scope of the appended claims, and all the details can be replaced by further technically equivalent elements. May be.

  In practice, the materials and dimensions used may be anything depending on the needs and state of the art.

  The disclosures in Italian Patent Application No. MI2005A001190 from which this application claims priority are incorporated herein by reference.

  Any technical feature recited in any claim may be followed by a reference numeral, which is included solely for the purpose of enhancing the clarity of the claim, such as The interpretation of each element identified by way of example with reference signs is not limited in any way.

1 is a schematic view of a product such as a bodysuit that can be obtained with the method according to the invention. FIG. 2 is an enlarged detail view of the product shown in FIG. 1. FIG. 2 is another detail enlarged view of the product shown in FIG. 1. FIG. 2 is another detail enlarged view of the product shown in FIG. 1. FIG. 3 is a partial view of an adjustable cam arrangement, a known technique in which stitches are released from one needle and transferred to an adjacent needle. FIG. 6 is a schematic plan view of adjacent hooks and sinkers illustrating the creation of a stitch pattern according to the cam position shown in FIG. 5.

Claims (3)

  In a method of knitting a product using a circular knitting machine having a needle cylinder that can be rotated in both rotational directions, particularly a high-definition circular knitting machine, at least one region (A, B, C, D) of the product (1) ) By moving the number of active needles of a group of adjacent needles to the adjacent needle of the group of needles in the last loop of the knitted fabric formed by a particular needle of the group of needles. Reduced at least once and thus manufactured by excluding said particular needle from knitting while forming at least a part of the next row of knitted fabric with said needle that continues to operate, said area (A , B, C, D), the rotational movement about the axis of the knitted fabric obtained by operating the needle cylinder by the rotational movement about the axis in one rotation direction. By the knee Wherein the produced by preparing continuous alternating with rows of parts of knitted fabric obtained by activating the Rushirinda.   The number of needles to be operated among the group of needles is such that the last loop of the knitted fabric formed by a specific needle among the group of needles located at at least one end of the group of needles is adjacent to the group of needles. 2. The method of claim 1, wherein the method is reduced by transferring to a needle.   3. The method according to claim 1, wherein the method is carried out using a fine circular knitting machine having approximately 16 to 50 needles per inch.

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