Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
  • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
  • D04B1/243—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel upper parts of panties; pants
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B1/10—Patterned fabrics or articles
  • D04B1/102—Patterned fabrics or articles with stitch pattern
  • D04B1/106—Patterned fabrics or articles with stitch pattern at a selvedge, e.g. hems or turned welts
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
  • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B9/00—Circular knitting machines with independently-movable needles
  • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B9/00—Circular knitting machines with independently-movable needles
  • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration

Definitions

• Seiki and Protti and circular knitting machines with medium diameter (14 to 18 inches) such as Santoni SM9, and corresponding machines with large diameter (33 to 42 inches) , which are also equipped with needles in the dial and cylinder such as Variatex 1800 produced by Mecm ⁇ r and cor- responding models produced by Jumberca, Mayer, Fuku- har ' a.
• manufacturers of these particular double-bed knitting machines have gradually increased their finesses (needles per inch) , but as is known, plain knitted fabric is always produced without using knitting .sinkers, i.e. only with bed needles, therefore said plain knitted fabric is not wholly satisfactory under a technical and textile point of view.
• the aforesaid circular machines generally operate on ribbed welts by carrying stitches from one needle bed 5 to another one, and also insert the so-called separation yarn between the various pieces of cloth or garments, which terms are known to skilled technicians.
• Current knitting production characterized by the combination of a ribbed welt beside an area of plain
• the present invention aims at reducing or eliminating at least partly the aforesaid technical -manufacturing limitations, with original economic, manufacturing, aesthetic and commercial purposes.
• a main aim of the invention consists in providing a method and related equipment for producing knitted items obtained with yarns commonly used in the textile industry , therefore natural, synthetic, artificial, elastic, elastomeric and mixed yarns, provided with ribbed welt beside plain knitted fabric (and related knitted structures) produced with the needles of only one needle bed in combination with knitting sinkers.
• Another main aim consists in providing a method and related equipment for producing knitted items provided with ribbed welt beside plain knitted fabric (and related knitted structures) with cylinder needles only and with knitting sinkers housed therein and operating with basically, horizontal or radial alternated motion.
• An additional aim consists in providing a method and related equipment for producing knitted items provided with ribbed welt with variously alternated needles beside knitting fabric produced with the needles of only one needle bed operating in combination with suitable knitting sinkers.
• Another aim consists in producing the aforesaid knitted items by means of the needles of one needle bed only, with knitting sinkers housed therein and operating with basically vertical and/or elliptical motion.
• Another aim consists in providing a method and related equipment for producing the aforesaid manufactured items, such as pieces of cloth or garments, without the separation yarn, therefore individually discharged at the end of each production cycle. Further aims de- rive from the description, examples and accompanying drawings, alone or in combination one with the other, beyond final claims.
• Figure 7 shows a sectioned view of a knitted portion made up of an initial double-bed welt and of a plain knitted portion
• Figure 8 shows schematically a detail with a needle and a sinker, in a second type of known machine
• Figure 9 shows a perspective view of a knitted portion made up of an initial double welt and of a plain knitted portion
• Figures 9A, 10A and 10B show textile items produced according to the invention
• Figure 10 is a view as in Figure 8 of a knitted portion with an initial double welt and a plain knitted portion.
• the term "textile knitted items” refers to any product to be obtained with a textile knitting method, and thus both fabrics and real finished or semi-finished ite s .
• the invention does not relate to items other than "knitwear items", such as hosiery items, which are produced with small-diameter machines .
• Medium-diameter machines are machines having a diameter of 9 to 24 inches, whereas large-diameter machines are machines with a diameter above 24 inches.
• the description will refer to knitting machines in general, in particular to circular machines with me- dium and large nominal diameter of 9 to 42 inches, equipped at least with:
• FIG. 1 and 2 show schematically an example of the prior art : the common double bed machine is equipped with dial and cylinder and corresponding needles AP, AC (provided also with lateral spring ML) , taking the yarn F so as to produce the rib or ribbed welt knitted fabric MC-BC.
• Figure 7 shows a sectioned view of a knitted por- tion TM basically made up of the initial double-bed welt MC-BC, interrupted by stitches carried along line LTM, beyond which plain knitted fabric MR begins.
• the schematic embodiment in Figure 6 shows the needle cylinder modified by the addition of knitting sinkers PM, alternated to cylinder needles.
• sinkers PM provided with the usual sinking plane PIA take part in the normal fabric-building process together with cylinder needles AC.
• Said knitting sinkers are well known to skilled technicians and as such do not require any detailed description.
• 1,388,341 - 2,210,796 - 3,149,483 - 3,643,471 - 4,532,781 describe in a full way their main features and show various arrangements on the needle bed and the interaction with needles.
• the alternated radial sliding of sinkers PM guided by the cams of the sinker-cap or sinker-cover CP as usual (or also with an extended centripetal stroke for dis- charging the knitted fabric at cycle end) enables to control the fabric just formed and push it gradually inside the cylinder.
• sinkers PM basically modifies also the manufacturing cycle and the general structure of the aforesaid traditional machines . At the end of every working cycle involving a single garment or piece of cloth, the latter is discharged through the centripetal action (extended, if necessary) of sinkers PM, if required strengthened by suitable jets of compressed air suitably placed around the needle cylinder.
• the expensive fabric take-down device which in particular the aforesaid circular machines are equipped with is too large in its current shape and function; in the framework of the invention, the latter will then become a simple beamer for knitted fabrics if produced continuously.
• the innovative possibility of discharging from the needles every single garment or piece of cloth at the end of the working cycle also eliminates the need for the so-called separation yarn and related textile operations, thus reducing manufacturing times and costs during knitting and subsequent manufacturing.
• the present invention further develops referring explicitly to single-bed knitting machines equipped with hooks in the dial .
• the example of the prior art shown in Figure 8 relates to a circular "seamless" machine, as described in great detail in US patent 5,222,379, to which reference is made for further details. It is a medium-diameter machine for underwear and knitwear items similar to model SM-8 made by Santoni, which does not require any further explanation since it is well known. Said machines have differentiated diameters whose nominal value is of 9 to 24 inches.
• the example partially shown in Fig. 8 comprises the cylinder with its needles AC, equipped ' with usual knitting sinkers PM with sinking plane PIA, alternated to said needles AC.
• the cylinder rotates integrally with the so-called dial PL, which now houses the hooks U operating in combination with needles AC for building the double welt (or elastic welt) DB-DBE shown in Figs. 9-9A.
• dial PL which now houses the hooks U operating in combination with needles AC for building the double welt (or elastic welt) DB-DBE shown in Figs. 9-9A.
• the aforesaid two-layer double welt DB-DBE is present in the pants 1 of Figure 9A and in the current production of underwear and knitwear items obtained with machines having differentiated diameters by the aforesaid company Santoni SM-8 and the like.
• Said double welt obtained by means of hooks U discharging the knitted fabric has technical, textile, functional and aesthetic disadvantages .
• the aforesaid "bells" or "cups” CU are generally very delicate and can easily break. Moreover, the latter are very evident and stand out on the knitted fabric, so that as a rule such a manufactured item should not be designed or used on its reverse side.
• Pattern jacquard with cylinder needles only is necessarily limited since it produces- -floating yarns reducing the general elastic- ity of the belt or since it requires an accurate adjustment of the various yarns (the so-called "plating", a technique known to skilled technicians) .
• the two-layer belt DB-DBE of the pants 1 in Fig. 9A tends to roll up on itself, thus reducing general comfort.
• plain knitwear items provided with ribbed welt are regarded as most valuable, with an obvious additional value.
• hooks U of the dial PL in Fig. 8 are therefore replaced by needles AP, thus showing basically the same technical features as the machine already described in Fig.
• the invention preferably limits to only one needle bed (dial) the use of needles for carrying stitches from one bed to the other, provided with lateral spring (but stitches can be carried also with suitable needles without said spring) .
• the ribbed welt MC-BC of Figure 7 represents the lower portion of a generic knitted fabric produced with the aforesaid double-bed machines
• the corresponding ribbed welt MC-BC of Figure 10 if turned upside down and produced with suitable yarns, acts as elastic belt for the pants 1 in Fig. 10A or as multifunctional ribbed welt for the manufactured item 1 of Figure 10B produced with single-bed machines with differentiated diameters.
• the great flexibility of the invention enables to change also to a large extent the shape and functions at least of part of current knitwear production, with the results and effects described above.
• the present description necessarily limited, suggests to skilled technicians further innovations, which however fall within the framework of the invention. Figs.
• FIG. 1 shows ' ⁇ examples of prior art related to yarn taking and double-bed knitted structure when building a knitted fabric with rib or ribbed welt MC-BC.
• dial needle AP is equipped with lateral- spring ML.
• Fig. 3 shows dial needles AP, now idle after transferring their stitches are carried onto cylinder needles AC.
• the textile machine currently produces plain knitted fabric with the needles of one needle bed only or cylinder needles AC.
• Figure 4 shows a single needle provided with lateral spring ML during the stitch-carrying step, with the corresponding needle of the second bed.
• Figure 5 is a front view, of a cylinder needle AC, provided with lateral spring ML, into which dial needle AP is inserted.
• Fig. 6 shows a sectioned schematic view of the cylinder according to the invention, equipped with knitting sinkers PM sliding alternatively between said needles and controlled by the sinker-cap or sinker-holder CP and related cams ac- cording to traditional textile technology.
• Dial needles AP after working when the initial ribbed welt MC-BC is built, are now excluded from the fabric- building process for plain knitted fabric MR, which is manufactured with cylinder needles AC only together with knitting sinkers PM.
• Fig. ' 7 shows --a 'sectioned view of the knitted fabric TM made up of the initial ribbed welt MC-BC and of the plain knitted fabric MR lying above.
• LTM refers to the line for discharging or carrying stitches from dial to cylinder.
• hooks U are therefore replaced by said transfer needles AP, preferably equipped with lateral spring, so as to produce known knitwear items having the valuable ribbed welt for various applications (Fig. 10B) , beyond acting as belt or welt for the pants 1 in Fig. 10A.
• needles AP with lateral spring are much more versatile than said hooks U since they are used for producing both the valuable ribbed welt of Figures 7-10 and the current two-layers welt referred to with DB-DBE in Figures 9 and 9A.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Knitting Machines (AREA)

Applications Claiming Priority (2)

Publications (1)

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Country Status (4)

Cited By (1)

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• 2004
  • 2004-02-13 IT ITCO20040004 patent/ITCO20040004A1/it unknown
• 2005
  • 2005-02-11 WO PCT/IT2005/000069 patent/WO2005078178A1/en not_active Application Discontinuation
  • 2005-02-11 EP EP05718979A patent/EP1713966A1/de not_active Withdrawn
  • 2005-02-11 CN CNA2005800046574A patent/CN1961105A/zh active Pending

Non-Patent Citations (1)

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