EP0592376B1 - Method and device for making a connection between the two edges of a knitted tubular product at the end of its formation - Google Patents

Method and device for making a connection between the two edges of a knitted tubular product at the end of its formation Download PDF

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Publication number
EP0592376B1
EP0592376B1 EP93830407A EP93830407A EP0592376B1 EP 0592376 B1 EP0592376 B1 EP 0592376B1 EP 93830407 A EP93830407 A EP 93830407A EP 93830407 A EP93830407 A EP 93830407A EP 0592376 B1 EP0592376 B1 EP 0592376B1
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EP
European Patent Office
Prior art keywords
needles
stitches
semirank
cylinder
needle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93830407A
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German (de)
French (fr)
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EP0592376A1 (en
Inventor
Alberto Frullini
Paolo Frullini
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Fabritex SRL
Conti Florentia Srl
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Fabritex SRL
Sangiacomo SpA
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Publication of EP0592376A1 publication Critical patent/EP0592376A1/en
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    • 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
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/02—Loop-transfer points
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles
    • 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
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
    • D04B9/56—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof heel or toe portions

Definitions

  • the present invention relates to a method and a device for effecting the union of two edges of a knitted tubular manufactured product, such as for example the remeshing of the point of the stockings, at the end of the knitting of the manufactured product.
  • each stocking must be turned over so that the seam to be made is on the underside of the stocking. After which the point is closed by removing the said edge to be thrown and sewing together the stitches of the last half row of the top of the foot and those of the last half row of the plant.
  • the same document describes a device for the implementation of said method and with the plates of half the cylinder of the needles put out of work which are provided with a hook intended to cooperate with the corresponding needle located opposite while this- this is raised; with a cam, acting on the heel of said plates, which makes it accomplish a centrifugal radial stroke enabling the head of the corresponding needle located opposite to be moved out of the cylinder; and with a roller, rotating inside the recess of said plates, to allow the first half-row of the pocket to be close to be approached towards the needles without mesh.
  • this known device does not always guarantee the correct grip of the fabric by all the needles placed in the working position and, moreover, at as and when the remeshing, that is to say as the pocket is reduced, it does not guarantee identical and uniform knitting.
  • the main object of the present invention is to eliminate the aforementioned drawbacks.
  • the advantages obtained thanks to the present invention essentially consist in the fact that it is possible to effect the closing of the tip of a knitted tubular manufactured product, on the same machine which produces it, thereby obtaining a great reduction in time and manufacturing cost, due to the complete elimination of certain phases of the traditional tip closure process knitted tubular manufactured products, such as for example the formation of the throwing discard and the corresponding waste, the transfer of manufactured products from the circular machine to storage stores or to sewing or remeshing machines, their reversal, the sewing of the point and successive recovery; that it is possible to carry out the aforementioned remeshing with the same wire used to execute the last rows of stitches, without a continuity solution, that is to say without interrupting the manufacturing cycle of the manufactured product; that it is possible to carry out said remeshing with any point suitable for making knitted or crocheted articles, such as for example the "simple chain" point, which has optimal elastic behavior and allows the use of the largest part of the trade yarns; it is possible to achieve the closure of the tip of a stocking in
  • FIG. 1 shows the plan view, partially in section, of a circular machine equipped with a device according to the invention
  • Fig. 2 shows the sectional view along line AA of the machine of FIG. 1
  • Fig. 3A shows the schematic plan view of the needle cylinder of the machine of FIG. 1, according to a first embodiment, with an even number of needles and in which the remeshing line (nm) is arranged along a diametrical straight line joining two diametrically opposite needles
  • Fig. 1 shows the plan view, partially in section, of a circular machine equipped with a device according to the invention
  • Fig. 2 shows the sectional view along line AA of the machine of FIG. 1
  • Fig. 3A shows the schematic plan view of the needle cylinder of the machine of FIG. 1, according to a first embodiment, with an even number of needles and in which the remeshing line (nm) is arranged along a diametrical straight line joining two diametrically opposite needles
  • Fig. 1 shows the plan view,
  • FIG. 3B shows the schematic plan view of the needle cylinder of the machine of FIG. 1, according to a second embodiment, with an even number of needles and in which the remeshing line (nm) is passed between two pairs of diametrically opposite needles
  • Fig. 3C represents the schematic plan view of the needle cylinder of the machine of FIG. 1, according to another embodiment, with an odd number of needles and with the remeshing line (nm) which joins a needle on the N side with the center of a pair of needles on the M side
  • Fig. 4A shows the partial plan view of the enlarged detail of the last row of meshes executed on the cylinder of FIG. 3A or of FIG. 3C side n, before remeshing;
  • Fig. 3B shows the schematic plan view of the needle cylinder of the machine of FIG. 1, according to a second embodiment, with an even number of needles and in which the remeshing line (nm) is passed between two pairs of diametrically opposite needles
  • FIG. 4B represents the partial plan view of the enlarged detail of the last row of meshes executed on the cylinder of FIG. 3A or of FIG. 3C on the n side, before remeshing and with the last stitch (T) executed in restraint, that is to say not discharged from the corresponding training needle;
  • Fig. 4C shows the partial plan view of the enlarged detail of the last row of meshes executed on the cylinder of FIG. 3B or of FIG. 3C side m, before remeshing;
  • Fig. 5A shows the detailed plan view of FIG. 4C in the initial phase of remeshing the point, with the remeshing thread taken from the side (x) of the fabric;
  • Fig. 5B shows the detailed view of the manufactured product of FIG.
  • FIG. 4C in the initial phase of remeshing the point, with the remeshing thread taken from the side (y) of the fabric;
  • Fig. 5C shows the detailed view of the manufactured product of FIG. 4A, during the initial remeshing phase of the point;
  • Fig. 5D shows the detailed view of the manufactured product of FIG. 4B, during the initial phase of remeshing the tip;
  • Fig. 5E represents the detailed view of a product manufactured during the remeshing of the point, with two end chain knots (I, II) to block the remeshing wire;
  • Fig. 6A shows the perspective view of a generic tubular manufactured product with the tip open;
  • Fig. 6B shows the schematic view of the manufactured product of FIG. 6A in the pre-final phase of closing the tip;
  • FIG. 6C shows the schematic view of the manufactured product of FIG. 6A in the final phase of closing the point
  • Fig. 6D shows the view in longitudinal section of FIG. 6C
  • Fig. 7A shows the perspective view of a men's sock with the point formed by two identical and adjacent semi-circular edges (S, R), called "fish mouth”
  • Fig. 7B shows the schematic view of the sock of FIG. 7A in the pre-final phase of closing the tip
  • Fig. 7C shows the schematic view of the sock of FIG. 7A in the final phase of closing the point
  • Fig. 7D shows the view in longitudinal section of FIG. 7C
  • Fig. 7A shows the perspective view of a men's sock with the point formed by two identical and adjacent semi-circular edges (S, R), called "fish mouth”
  • Fig. 7B shows the schematic view of the sock of FIG. 7A in the pre-final phase of closing the tip
  • Fig. 7C shows the schematic view of the
  • FIG. 8A shows the perspective view of a men's sock with the point formed by two edges with a different number of rows, called "in the mouth of a shark";
  • Fig. 8B shows the schematic view of the sock of FIG. 8A in the pre-final phase of closing the tip;
  • Fig. 8C shows the schematic view of the sock of FIG. 8A in the final phase of closing the point;
  • Fig. 8D shows the side view of the sock of FIG. 8C;
  • Fig. 9A represents the view in perspective of a sock for men with the open toe, traditional type;
  • Fig. 9B shows the schematic view of the sock of FIG. 9A in the pre-final phase of closing the tip;
  • Fig. 9A represents the view in perspective of a sock for men with the open toe, traditional type;
  • Fig. 9B shows the schematic view of the sock of FIG. 9A in the pre-final phase of closing the tip;
  • FIG. 9C shows the schematic view of the sock of FIG. 9A in the final phase of closing the point;
  • Fig. 9D represents the sock of FIG. 9C in perspective view rotated by 90 °;
  • Fig. 10A shows the longitudinal view of a needle for removing the meshes to be transferred;
  • Fig. 10B shows the sectional view along the line RR of FIG. 10A;
  • Fig. 10C shows the sectional view along the line SS of FIG. 10A;
  • Fig. 11A shows the side view of a mesh support needle during the remeshing phase;
  • Fig. 11B shows the rear view of the needle of FIG. 11A;
  • Fig. 12A shows the side view of a staple for removing and turning the meshes;
  • Fig. 10A shows the longitudinal view of a needle for removing the meshes to be transferred
  • Fig. 10B shows the sectional view along the line RR of FIG. 10A
  • Fig. 10C shows the sectional
  • FIG. 12B shows the front view of the clip of FIG. 12A, with the head oriented to the right;
  • Fig. 12C shows the front view of the clip of FIG. 12A, with the head oriented to the left;
  • Fig. 13 shows the side view of a bolt for tightening and respectively opening the mesh on the clip of FIG. 12A;
  • Fig. 14A shows the plan view of the assembly of two staples and the corresponding bolts in the clamping position;
  • Fig. 14B shows the sectional view along the line CC of FIG. 14A;
  • Fig. 15A shows the plan view of the assembly of FIG. 14A in the open position;
  • Fig. 15B shows the sectional view along the line DD of FIG. 15A;
  • Fig. 16 shows the needle of FIG.
  • FIG. 17 shows the needle of FIG. 16 in the initial ascent phase
  • Fig. 18 shows the detailed view of the needle of FIG. 17 in an intermediate phase of its ascent course
  • Fig. 19 shows the detailed view of the needle of FIG. 11 in the terminal phase of the first ascent
  • Fig. 20 shows the needle of FIG. 18 with the corresponding clip in the phase of approximation of the corresponding mesh
  • Fig. 21 represents the needle and the clip of FIG. 20 in the setting phase of the corresponding stitch
  • Fig. 22 shows the needle and the clip of FIG. 20 in the final phase of removing the mesh by the hook
  • Fig. 23 shows the needle of FIG.
  • FIG. 24 shows a schematic vertical sectional view of the machine of FIG. 1 in the phase of reversing the stitches of the first half row;
  • Fig. 25 shows the detailed view of the needle of FIG. 11 in the interception phase of the corresponding mesh which has been transferred;
  • Fig. 26 shows the clip of FIG. 25 in the support phase of the corresponding stitch on the neck of the needle before the opening of the bolt;
  • Fig. 27 shows the needle of FIG. 26 in the raised position to release the corresponding mesh which has been transferred;
  • Fig. 28 represents the needle of FIG. 26 after the release of the corresponding mesh which has been transferred;
  • - Fig. 29 shows the needle of FIG. 26 in the phase of predisposition of the meshes for the remeshing;
  • Fig. 26 shows the phase of predisposition of the meshes for the remeshing;
  • FIG. 30 shows the needle of FIG. 29 in the position corresponding to the remeshing of the meshes which are mounted thereon, with the remeshing needle, the corresponding hook and the fabric press slide;
  • Fig. 31 shows the needle of FIG. 11 in the ascent phase to unload from the tongue the corresponding mesh of the second half-row, according to an alternative embodiment of the invention;
  • Fig. 32 shows the needle of FIG. 31 in the phase of felling of the mesh which has been transferred and of unloading of the mesh situated below;
  • Fig. 33 represents the needle of FIG. 32 in the ascent phase, with the plates closed, to arrange the corresponding mesh which has been transferred under the remeshing condition;
  • Fig. 34 shows the needle of FIG. 33 in the end of ascent position to arrange the corresponding mesh in the remeshing position.
  • said phase (c) can be executed first and phases (a) and (b) in second and third respectively.
  • phases (c) and (b) can be executed in second and third respectively.
  • the cylinder (1) of the needles (3,7) can rotate so uniform and the remeshing needle (9), in this case, is inserted into the pair of stitches (8,80) following the movement of the cylinder and then moves back to exit the needle cylinder and return to its initial position.
  • the cylinder (1) of the needles (3,7) can rotate uniformly and the remeshing needle (9), in this case, is inserted in the mesh (8) following the movement of the cylinder and then back to exit the cylinder (1) of the needles (3,7) and return to its initial position.
  • the radial grooves of said sector (5) are parallel two by two, with each pair oriented along a corresponding radius of the sector (5) passing through the corresponding needle (3) and respectively (7).
  • said remeshing needle (9) is positioned behind the needles (7) of the second half-row.
  • said remeshing needle (9) can be positioned in front of the needles (7) of the second half-row.
  • said needle (9) can be slaved to an alternating horizontal oscillating movement, to be used with the cylinder (1) of the needles (3,7) rotating continuously.
  • each of said staples (13) is provided with two heels (131), protruding on each side, but aligned vertically, to allow its reciprocal movement inside the respective grooves of said sector (5) under the control of a corresponding horizontal, fixed cam (14), so as to allow the travel of the staples (13) in both directions relative to the sector (5) and in relation to the position of the latter relative to the needle cylinder (1).
  • each of said bolts (4) is provided with two heels (40) protruding on each side and offset vertically to allow its movement under the control of said cam (14).
  • said staples (13) have a head with a wedge profile, to facilitate the capture and respectively the release of the corresponding meshes (8) to be transferred.
  • said heels (131.40) of the staples (13) and the bolts (4) have a height which is predetermined as a function of the profile of the corresponding control cam (14).
  • said oscillating sector (5) is mounted idly on two corresponding cylindrical hinges (50) horizontally coaxial and diametrically opposite, which are fixed on a circular crown (52) coaxial with the needle cylinder (1), and it is equipped with a fork (51) intended to cooperate with a corresponding vertical control bolt (15) to trigger its alternating rotation with an angular amplitude of 180 ° by means of a corresponding transmission with left axes: said vertical bolt (15) being vertically sliding between two positions, one raised to trigger the horizontal rotation of the fork (51) and the other lowered from rest.
  • said needles (3) of the first half-row are provided with a groove (31) in each of the respective flanks, to allow the head of the corresponding staples (13) to be received and to allow the latter to s 'insert into the corresponding stitches (8), and with a heel (33) additional to that or those of knitting (33'), which is intended to be actuated by one of said cam means.
  • said needles (7) of said second half-row are provided with a heel (74) additional to that or those of knitting (74 '), which is actuated by one of said cam means, and, moreover, they are provided with a groove (71) having its axis (bb) inclined downward relative to the longitudinal axis of the rod (73) and in the centrifugal direction relative to the cylinder (1) of the needles (3,7 ), this groove being formed in the same flank for all the needles (7) and being intended to guide the remeshing needle (9).
  • said groove (71) of the needles (7) has its axis inclined upward relative to the longitudinal axis of the rod (73) and in the centrifugal direction with respect to the cylinder (1) of the needles (3,7).
  • said additional heels (33,73) of the needles (3,7) coincide with those (33 ′, 73 ′) of knitting.
  • said staples (13) have their point folded in correspondence with the head, laterally and inwards relative to the respective sliding direction to allow their insertion into the cavities (31) of the corresponding needles (3) of the first half-row and thus ensure the capture of the respective meshes (8).
  • the stitches (8) of the first half-row removed are equal to the number of needles (3 , 7) of the cylinder minus two, divided by two, which are transferred to as many needles (7) of the second half-row.
  • the stitches (80) of the two needles (7) which are found at the ends of the second half-row and have been excluded from the transfer procedure of the meshes (8) of the first half-row are also re-meshed.
  • the axis (aa) of rotation of the sector (5) is passing in correspondence of a needle (7) of the second half-row and the center line of the needles (3,7) of the end of the respective half-rows, in this case, the stitches to be transferred correspond to the total number of needles minus one and divided by two , and the number of needles (7) of the second half-row is equal to the number of needles (3) of the first half-row plus one.
  • each needle (3) of the last half-row executed is gradually raised, retaining the corresponding stitch (8) by means plates (6) to the sampling area. Then, each needle (3), with the plates (6) arranged in the open condition, is subsequently raised, until depositing the respective stitch (8) at a useful level to allow its successive removal (Fig. 16, 17, 18). After which each needle (7) of the other half-row is gradually raised, so as to arrange the corresponding stitch (80) at the same level as the other (8) and thus avoid excessive stretching of the fabric (Fig. 19 ).
  • each needle (3) is subsequently raised to lift the corresponding mesh (8) and allow its capture by the staples (13), which, in the meantime, are controlled to advance until having their heads in the corresponding grooves ( 31) (Fig. 20,21).
  • the bolts (4) of each pair of staples (13) are controlled to advance towards the corresponding needle (3), so as to close the recesses (130) of the staples (13) and thus retain inside the mesh (8) (Fig. 22).
  • each needle (3) is lowered, causing the final transfer from the mesh (8) to the staples (13) (Fig. 23).
  • each needle (7) of the second half row is gradually raised until it is in and beyond the stitch corresponding (8) of the first half row.
  • each staple (13) and the corresponding latch (4) are moved, so as to compress the mesh (8) on the needle (7), after which they are opened to release it and allow the subsequent lifting of the 'needle (7) causes their final disengagement (Fig. 25, 26, 27).
  • each stitch (8) of the first half-row is threaded over the neck of a needle (7), above the corresponding stitch (80) of the other half-row. Then the needle (7) is lowered to below the corresponding staples (13). After the successive forward movement of the staples (13), each needle (7) is raised, until the corresponding stitches (8,80) lie astride the respective groove (71). Then, the staples (13) and the bolts (4) associated with the mesh (8) are moved back and the needles (7) are subsequently raised until bringing the fabric to the useful level of re-molding.
  • the predisposition of the meshes (8,80) on the needle (7) for the remeshing can be obtained by means of the slide (11) instead of the staples (13) (Fig. 29).
  • the intermittent rotation of the cylinder (1) of the needles (3,7) is controlled.
  • the remeshing needle (9) advances and, after passing inside the stitches (8,80) in the groove (71) of each needle (7), it is fed with the thread (F) which was used for knitting the manufactured product, with no continuity, by the hook (10), after which it moves backwards, forming a single chain linkage stitch.
  • said needle (9) and the corresponding hook (10) in cooperation with the slide (11) execute two or more of two closing nodes (I, II).
  • the wire (F) is cut in the following manner.
  • the remeshing means are moved back to allow the cutting means, that is to say a small wire cutting saw known per se, to cut the wire (F). In machines without this saw, said cutting is carried out using scissors or knives known per se.
  • the manufactured product is discharged into the upright position, that is to say final, by lowering each needle (7) until slaughter.

Abstract

Method for joining two edges of a knitted tubular manufactured product, particularly a stocking (hose), including the phase of manufacturing a manufactured product with a circular machine with just one cylinder, starting with the elastic edge and ending on the side of the tip which remains open, which method envisages: (a) raising a predetermined number of needles (3) of a first half-row; (b) subsequently raising the said needles (3) to allow the corresponding stitches (8) to be taken up; (c) raising to the same level a predetermined number of needles (7) with the stitches (80) of the second half-row; (d) taking up the said stitches (8); (e) lowering the said needles (3) of the first half-row; (f) transferring the stitches (8) thus taken up onto the corresponding needles (7) of the second half-row, turning them over (turning them round, twisting them); (g) raising the needles (7) of the second half-row; (h) locating the superimposed pairs of stitches (8, 80) of each needle (7) of the second half-row strictly juxtaposed and coaxial; (i) subsequently raising the needles (7) of the second half-row; (l) turning the needle cylinder (1) with an intermittent movement and, in each step, inserting a mending-in (grafting, linking) needle (9) into a pair of stitches thus raised, supplying it with some thread (F) used for knitting the manufactured product, without a break in continuity, and then extracting it in order to form a mending-in (grafting) stitch; (m) after making the last mending-in stitch, making two or more than two closure knots (I, II); (n) cutting the thread (F); (o) lowering the needles (7) of the second half-row until the threads are taken down from the hooks. <IMAGE>

Description

La présente invention concerne un procédé et un dispositif pour effectuer l'union de deux bords d'un produit manufacturé tubulaire tricoté, comme par exemple le remaillage de la pointe des bas, au terme du tricotage du produit manufacturé.The present invention relates to a method and a device for effecting the union of two edges of a knitted tubular manufactured product, such as for example the remeshing of the point of the stockings, at the end of the knitting of the manufactured product.

Il est également connu que les bas sont produits avec des machines circulaires à un ou deux cylindres à aiguilles, en commençant par le bord ou revers élastique et en terminant par le côté de la pointe qui reste ouverte et qui doit être fermée par la suite au moyen de machines à coudre ou de remailleuses appropriées. Plus précisément, il est connu que, après la formation des rangs utiles de la pointe du bas, quelques rangs sont effectués pour réaliser un bord à jeter, appelé "défilage", généralement en côte fine et d'une hauteur d'environ un centimètre, pour éviter des démaillages pendant la couture de fermeture. En fonction du type de machine utilisée, les chaussettes sont produites:

  • a) l'une à la suite de l'autre. Dans ce cas le dernier rang du défilage est relié au premier rang du bord élastique de la chaussette suivante au moyen d'un fil résistant, lisse et bien visible, lequel est travaillé avec une alimentation différente de celle utilisée pour le bord élastique et lequel est destiné à être enlevé manuellement pour séparer une chaussette de l'autre avant la couture de la pointe;
  • b) détachés l'un de l'autre. Ce procédé est utilisé spécialement sur les machines circulaires à un seul cylindre ou à double cylindre, équipées d'un dispositif automatique de séparation des bas fabriqués.
It is also known that the stockings are produced with circular machines with one or two needle cylinders, starting with the elastic edge or cuff and ending with the side of the tip which remains open and which must be closed thereafter. using appropriate sewing machines or stitching machines. More specifically, it is known that, after the useful rows of the bottom tip have been formed, a few rows are made to make a throw edge, called "scrolling", generally in fine rib and a height of about one centimeter , to avoid detangling during the closing seam. Depending on the type of machine used, the socks are produced:
  • a) one after the other. In this case, the last row of the run is connected to the first row of the elastic edge of the next sock by means of a resistant, smooth and clearly visible thread, which is worked with a different feed than that used for the elastic edge and which is intended to be removed manually to separate one sock from the other before sewing the point;
  • b) detached from each other. This process is used especially on circular machines with a single cylinder or with a double cylinder, equipped with an automatic device for the separation of manufactured stockings.

Ensuite, chaque bas doit être retourné pour faire en sorte que la couture à effectuer se trouve sur l'envers du bas. Après quoi la pointe est fermée en enlevant ledit bord à jeter et en cousant ensemble les mailles du dernier demi-rang du dessus du pied et celles du dernier demi-rang de la plante.Then each stocking must be turned over so that the seam to be made is on the underside of the stocking. After which the point is closed by removing the said edge to be thrown and sewing together the stitches of the last half row of the top of the foot and those of the last half row of the plant.

Mais l'exécution de la couture de la pointe des bas en dehors de la machine qui les produit entraîne une augmentation de leur temps et de leur coût de fabrication, principalement à cause des nombreuses opérations intermédiaires à effectuer entre la fin du tricotage et la couture de la pointe, comme par exemple le prélèvement et le transfert des bas vers des magasins de stockage respectifs et leur classement en fonction de la couleur et/ou de la taille. Tout cela nécessite, en effet, d'employer un personnel spécifiquement qualifié pour effectuer et superviser ces opérations et de disposer d'espaces suffisamment grands pour l'installation des machines et pour le classement et le stockage des bas. Et, en plus de tout cela, il y a le fait que, en relation avec le nombre élevé de bas ainsi fabriqués, la quantité de tissu qui se perd pour la fabrication et l'enlèvement successif dudit bord à jeter, s'avère particulièrement élevée, et par conséquent le coût correspondant influe fortement et négativement sur le rendement économique des installations traditionnelles de fabrication.But the execution of the hosiery outside the machine which produces them increases their time and their manufacturing cost, mainly because of the numerous intermediate operations to be carried out between the end of knitting and sewing the tip, such as the removal and transfer of the stockings to the respective storage stores and their classification according to color and / or size. All this requires, in fact, to employ specially qualified personnel to carry out and supervise these operations and to have sufficiently large spaces for the installation of the machines and for the classification and storage of stockings. And, in addition to all this, there is the fact that, in relation to the high number of stockings thus produced, the quantity of fabric which is lost for the manufacture and the successive removal of said edge to be thrown, turns out to be particularly high, and therefore the corresponding cost strongly and negatively influences the economic return of traditional manufacturing facilities.

Il est également connu, d'après le document IT 9590-A/87, un procédé pour la formation de la pointe fermée des bas pendant leur cycle de production au moyen d'une machine circulaire, lequel prévoit de commencer le bas avec la formation d'une poche de maille tridimensionnelle correspondant à la pointe du pied; de former ladite poche avec un tissu double dans lequel deux bords identiques sont unis juxtaposés; de poursuivre la fabrication du pied du bas après avoir remis en position de travail les aiguilles qui avaient été mises hors de travail pendant la formation de la poche, de manière à obtenir son remaillage. Le même document décrit un dispositif pour la mise en oeuvre dudit procédé et avec les platines de la moitié du cylindre des aiguilles mise hors de travail qui sont munies d'un crochet destiné à coopérer avec l'aiguille correspondante située en face alors que celle-ci est soulevée; avec une came, agissant sur le talon desdites platines, laquelle lui fait accomplir une course radiale centrifuge permettant de déplacer hors du cylindre la tête de l'aiguille correspondante située en face; et avec un galet, tournant à l'intérieur de l'évidement desdites platines, pour permettre d'approcher le premier demi-rang de la poche à remailler vers les aiguilles dépourvues de maille.It is also known, from IT 9590-A / 87, a method for forming the closed toe of the stockings during their production cycle by means of a circular machine, which plans to start the bottom with the formation a three-dimensional mesh pocket corresponding to the toe; forming said pocket with a double fabric in which two identical edges are united juxtaposed; continue manufacturing the bottom foot after having returned to the working position the needles which had been put out of work during the formation of the pocket, so as to obtain its remeshing. The same document describes a device for the implementation of said method and with the plates of half the cylinder of the needles put out of work which are provided with a hook intended to cooperate with the corresponding needle located opposite while this- this is raised; with a cam, acting on the heel of said plates, which makes it accomplish a centrifugal radial stroke enabling the head of the corresponding needle located opposite to be moved out of the cylinder; and with a roller, rotating inside the recess of said plates, to allow the first half-row of the pocket to be close to be approached towards the needles without mesh.

Mais ce dispositif connu ne garantit pas toujours la prise correcte du tissu par toutes les aiguilles mises en position de travail et, par ailleurs, au fur et à mesure du remaillage, c'est-à-dire au fur et à mesure de la réduction de la poche, il ne garantit pas un tricotage identique et uniforme.However, this known device does not always guarantee the correct grip of the fabric by all the needles placed in the working position and, moreover, at as and when the remeshing, that is to say as the pocket is reduced, it does not guarantee identical and uniform knitting.

On connaît également, d'après le document IT 9465-A/90, un procédé pour le remaillage de la pointe des bas au moyen de la machine circulaire qui les produit, à partir de la pointe, conformément auquel il est prévu de tirer progressivement vers l'extérieur, avec un mouvement horizontal et progressivement décroissant, une portion limitée du demi-rang libre de la poche à remailler et de la retenir à proximité des aiguilles correspondantes dépouvues de maille. Ceci est obtenu en utilisant la pointe d'un ressort qui appuie, à partir de l'intérieur du cylindre à aiguilles, sur la ligne médiane du premier demi-rang libre de la poche en coopération avec deux crochets, l'un avec mouvement horizontal alternatif et avec évolution alternative à la fin de chaque course, ayant pour fonction d'accrocher progressivement la zone à remailler dudit demi-rang et de le tirer vers et au-delà du cylindre à aiguilles, et l'autre avec un mouvement vertical alternatif pour retenir la zone de demi-rang ainsi retenue par le premier crochet et permettre son remaillage effectué par les aiguilles dépourvues de maille et remises en position de travail.Also known, from document IT 9465-A / 90, a process for remeshing the toe of the stockings by means of the circular machine which produces them, from the toe, in accordance with which it is intended to draw progressively outwards, with a horizontal and progressively decreasing movement, a limited portion of the free half-row of the pocket to be stitched up and to retain it near the corresponding needles without mesh. This is obtained by using the point of a spring which presses, from the inside of the needle cylinder, on the center line of the first free half-row of the pocket in cooperation with two hooks, one with horizontal movement alternative and with alternative evolution at the end of each race, having the function of progressively hooking the area to be remeshed of said half-row and of pulling it towards and beyond the needle cylinder, and the other with a vertical reciprocating movement to retain the half-row area thus retained by the first hook and allow its remeshing carried out by the needles without mesh and returned to the working position.

Mais l'expérience a démontré que cette technique de travail connue ne permet pas d'obtenir des avantages appréciables, aussi bien du point de vue de la qualité du produit fini, que de la capacité de production et de la fiabilité de la machine, et ne permet pas de toute façon d'obtenir un bas avec le bord élastique en points à côtes et défilage à l'intérieur du produit manufacturé.However, experience has shown that this known working technique does not allow appreciable advantages to be obtained, both from the point of view of the quality of the finished product and of the capacity. of production and reliability of the machine, and does not allow in any case to obtain a stocking with the elastic edge in ribbed stitches and scrolling inside the manufactured product.

Il est aussi connu d'après le brevet FR 1.032.231, un procédé de raccordement par couture sur un métier de bonneterie comportant des organes destinés à retenir des boucles des lisières d'un tricot, constituées respectivement par un groupe de boucles formées, procédé qui consiste à disposer les boucles sur les organes et à relier progressivement les boucles d'un groupe aux boucles de l'autre ou des autres groupes par tricotage.It is also known from patent FR 1,032,231, a method of connection by sewing on a knitted or crocheted loom comprising members intended to retain loops at the selvedges of a knitted fabric, constituted respectively by a group of formed loops, method which consists of placing the loops on the organs and progressively connecting the loops of one group to the loops of the other or of the other groups by knitting.

Le but principal de la présente invention est d'éliminer les inconvénients précités.The main object of the present invention is to eliminate the aforementioned drawbacks.

Ce résultat a été atteint, conformément à l'invention, en adoptant un procédé comportant la phase de fabrication d'un produit manufacturé tubulaire tricoté en commençant par le bord élastique et en terminant du côté de la pointe qui reste ouverte, avec une machine circulaire à un seul cylindre, lequel prévoit de:

  • soulever un nombre prédéterminé d'aiguilles d'un premier demi-rang, en retenant les mailles correspondantes au moyen des platines: par demi-rang étant entendu une pluralité de mailles adjacentes;
  • soulever ultérieurement les aiguilles dudit premier demi-rang, avec les platines ouvertes, jusqu'à déposer les mailles correspondantes à un niveau utile pour permettre leur prélèvement successif;
  • soulever un nombre prédéterminé d'aiguilles du deuxième demi-rang en amenant les mailles au même niveau que celui du premier demi-rang;
  • effectuer le prélèvement des mailles dudit premier demi-rang par des moyens destinés au transfert sur des aiguilles correspondantes du deuxième demi-rang;
  • abaisser lesdites aiguilles du premier demi-rang;
  • transférer les mailles ainsi prélevées avec un retournement de 180° autour d'un axe diamétral horizontal du cylindre à aiguilles, de manière que chaque maille ainsi renversée s'engage sur l'aiguille correspondante du deuxième demi-rang;
  • soulever les aiguilles du deuxième demi-rang de manière à charger les mailles du premier demi-rang qui ont été transférées et les libérer des moyens de transfert respectifs;
  • disposer les paires de mailles superposées de chaque aiguille du deuxième demi-rang étroitement juxtaposées et coaxiales, de manière à ce qu'elles soient adaptées pour le remaillage;
  • soulever ultérieurement les aiguilles du deuxième demi-rang avec les mailles ainsi disposées;
  • tourner avec un mouvement intermittent le cylindre à aiguilles et insérer, à chaque pas, une aiguille de remaillage dans une paire de mailles ainsi soulevées, en l'alimentant avec du fil utilisé pour le tricotage du produit manufacturé, sans solution de continuité, et ensuite l'extraire pour former une maille de remaillage à chaînette simple;
  • après l'exécution de la dernière maille de remaillage, c'est-à-dire après l'union des deux dernières mailles correspondantes desdits premier et deuxième demi-rangs, exécuter deux ou plus de deux noeuds de fermeture;
  • effectuer la coupe du fil de tricotage et de remaillage;
  • abaisser les aiguilles dudit deuxième demi-rang jusqu'à l'abattage, pour décharger le produit manufacturé ainsi terminé.
This result has been achieved, in accordance with the invention, by adopting a process comprising the phase of manufacturing a knitted tubular manufactured product, starting with the elastic edge and ending on the side of the point which remains open, with a circular machine. with a single cylinder, which provides for:
  • lifting a predetermined number of needles from a first half-row, retaining the corresponding stitches by means of the plates: by half-row being understood a plurality of adjacent stitches;
  • subsequently raise the needles of said first half-row, with the plates open, until depositing the corresponding stitches at a useful level to allow their successive removal;
  • lift a predetermined number of needles from the second half row bringing the stitches to the same level as that of the first half row;
  • take the stitches from said first half-row by means intended for transfer to corresponding needles of the second half-row;
  • lowering said first row needles;
  • transfer the stitches thus removed with an inversion of 180 ° around a horizontal diametral axis of the needle cylinder, so that each stitch thus inverted engages the corresponding needle of the second half-row;
  • raise the needles of the second half-row so as to load the stitches of the first half-row which have been transferred and release them from the respective transfer means;
  • arrange the superposed pairs of stitches of each needle of the second half-row closely juxtaposed and coaxial, so that they are suitable for remeshing;
  • subsequently raise the needles of the second half-row with the stitches thus arranged;
  • turn the needle cylinder with an intermittent movement and insert, at each step, a remesing needle into a pair of stitches thus raised, feeding it with thread used for knitting the manufactured product, without any solution of continuity, and then extract it to form a single chain remeshing mesh;
  • after the execution of the last remeshing stitch, that is to say after the union of the last two corresponding meshes of said first and second half-rows, execute two or more of two closing nodes;
  • cut the knitting and remeshing yarn;
  • lower the needles of said second half row until slaughter, to unload the finished manufactured product.

Et pour ce qui concerne le dispositif pour la mise en oeuvre dudit procédé, celui-ci comprend:

  • des premiers moyens à came pour la commande de l'ascension et respectivement la descente d'un nombre prédéterminé d'aiguilles d'un premier et d'un deuxième demi-rang de mailles, lesquelles sont dans la condition active lorsque les cames de tricotage sont dans la condition inactive et inversement;
  • des deuxièmes moyens à came pour la commande de l'ascension ultérieure et respectivement de la descente ultérieure dudit nombre prédéterminé d'aiguilles du premier et du deuxième demi-rang, lesquelles sont dans la condition active lorsque les cames de tricotage sont dans la condition inactive et inversement;
  • des moyens pour prélever les mailles dudit premier demi-rang et les retourner de 180° autour d'un axe diamétral horizontal du cylindre à aiguilles, avec une paire d'agrafes pour chaque maille et au-moins un pêne d'ouverture et respectivement de serrage, lesquels sont logés dans des rainures correspondantes d'un secteur semi-circulaire: ledit secteur étant monté tournant avec une amplitude angulaire de 180° dans les deux directions autour d'un axe diamétral horizontal du cylindre à aiguilles, au-dessus des platines de la machine circulaire;
  • des moyens pour rendre solidaire ledit secteur semi-circulaire avec le cylindre à aiguilles, avec un obturateur radial coulissant entre deux positions, l'une de blocage du secteur avec le cylindre à aiguilles et l'autre de déblocage par rapport au cylindre à aiguilles, mais dans une position dans l'espace constante et prédéterminée;
  • des moyens à fourche pour bloquer le boîtier des platines pendant la rotation horizontale dudit secteur semi-circulaire solidairement avec le cylindre à aiguilles, lesquels sont actionnés par des moyens correspondants à came solidaires du support du secteur semi-circulaire;
  • des moyens pour effectuer le remaillage des mailles jumelées et superposées chargées sur les aiguilles du deuxième demi-rang, avec une aiguille à bec de remaillage, avec un crochet pour desservir ladite aiguille, lequel est disposé du côté opposé de l'aiguille par rapport aux dites mailles, et avec un galet ou coulisseau presse-tissu pour maintenir en position de remaillage les mailles en phase de remaillage: ledit galet ou coulisseau étant disposé du même côté de l'aiguille de remaillage par rapport aux aiguilles à tricoter.
And as regards the device for implementing said method, it comprises:
  • first cam means for controlling the ascent and the descent respectively of a predetermined number of needles with a first and a second half-row of stitches, which are in the active condition when the knitting cams are in the inactive condition and vice versa;
  • second cam means for controlling the subsequent ascent and subsequent descent, respectively, of said predetermined number of needles of the first and second half-rows, which are in the active condition when the knitting cams are in the inactive condition and vice versa;
  • means for removing the stitches from said first half-row and turning them 180 ° around a horizontal diametral axis of the needle cylinder, with a pair of staples for each stitch and at least one opening and respectively clamping, which are housed in corresponding grooves of a semi-circular sector: said sector being mounted rotating with an angular amplitude of 180 ° in both directions around a horizontal diametral axis of the needle cylinder, above the plates circular machine;
  • means to bring said sector together semi-circular with the needle cylinder, with a radial shutter sliding between two positions, one blocking the sector with the needle cylinder and the other releasing relative to the needle cylinder, but in a position in the constant and predetermined space;
  • fork means for locking the casing of the plates during the horizontal rotation of said semi-circular sector integrally with the needle cylinder, which are actuated by corresponding cam means integral with the support of the semi-circular sector;
  • means for carrying out the remeshing of the twin and superimposed stitches loaded on the needles of the second half-row, with a needle with remeshing beak, with a hook to serve said needle, which is disposed on the opposite side of the needle from the said stitches, and with a roller or fabric press slide to keep the stitches in the remeshing position in the remeshing phase: said roller or slide being disposed on the same side of the stitching needle with respect to the knitting needles.

Les avantages obtenus grâce à la présente invention consistent essentiellement en ce qu'il est possible d'effectuer la fermeture de la pointe d'un produit manufacturé tubulaire tricoté, sur la même machine qui le produit, en obtenant ainsi une forte réduction du temps et du coût de fabrication, du fait de l'élimination complète de certaines phases du procédé traditionnel de fermeture de la pointe des produits manufacturés tubulaires tricotés, comme par exemple la formation du défilage à jeter et du déchet correspondant, le transfert des produits manufacturés de la machine circulaire aux magasins de stockage ou aux machines à coudre ou de remaillage, leur retournement, la couture de la pointe et le redressement successif; qu'il est possible d'effectuer le remaillage précité avec le même fil utilisé pour exécuter les derniers rangs de mailles, sans solution de continuité, c'est-à-dire sans interrompre le cycle de fabrication du produit manufacturé; qu'il est possible d'effectuer ledit remaillage avec n'importe quel point adapté pour confectionner des articles de bonneterie, comme par exemple le point "à chaînette simple", lequel possède un comportement élastique optimal et permet l'utilisation de la plus grande partie des filés du commerce; qu'il est possible de réaliser la fermeture de la pointe d'un bas suivant différentes formes, comme par exemple celle appelée "en bouche de poisson" et celle appelée "en bouche de requin", en plus de celles de type traditionnel; qu'il est possible d'obtenir ledit remaillage du côté du dessus ou du côté de la plante d'un bas en réalisant simplement, avant la fermeture de la pointe, une poche de tissu d'un côté ou de l'autre du produit manufacturé par rapport au talon; qu'au terme du remaillage de la pointe, le produit manufacturé se trouve dans la position à l'endroit, c'est-à-dire définitive; que le produit fini possède une qualité élevée du point de vue esthétique et fonctionnel, en ce que la ligne de fermeture est tricotée et unit les deux bords de la pointe sans aucune augmentation d'épaisseur; qu'un dispositif selon l'invention est de fiabilité élevée même après une longue période d'utilisation; qu'une machine circulaire traditionnelle peut en être équipée sans avoir à modifier radicalement sa structure fonctionnelle.The advantages obtained thanks to the present invention essentially consist in the fact that it is possible to effect the closing of the tip of a knitted tubular manufactured product, on the same machine which produces it, thereby obtaining a great reduction in time and manufacturing cost, due to the complete elimination of certain phases of the traditional tip closure process knitted tubular manufactured products, such as for example the formation of the throwing discard and the corresponding waste, the transfer of manufactured products from the circular machine to storage stores or to sewing or remeshing machines, their reversal, the sewing of the point and successive recovery; that it is possible to carry out the aforementioned remeshing with the same wire used to execute the last rows of stitches, without a continuity solution, that is to say without interrupting the manufacturing cycle of the manufactured product; that it is possible to carry out said remeshing with any point suitable for making knitted or crocheted articles, such as for example the "simple chain" point, which has optimal elastic behavior and allows the use of the largest part of the trade yarns; it is possible to achieve the closure of the tip of a stocking in different forms, such as that called "fish mouth" and that called "shark mouth", in addition to those of the traditional type; that it is possible to obtain said remeshing on the top side or on the plant side of a stocking by simply carrying out, before the tip is closed, a pocket of fabric on one side or the other of the product manufactured in relation to the heel; that at the end of the remeshing of the point, the manufactured product is in the position at the place, that is to say final; that the finished product has a high aesthetic and functional quality, in that the line of closure is knitted and unites the two edges of the point without any increase in thickness; that a device according to the invention is of high reliability even after a long period of use; that a traditional circular machine can be fitted without having to radically modify its functional structure.

Ces avantages et caractéristiques de l'invention ainsi que d'autres seront plus et mieux compris de chaque homme du métier à la lumière de la description qui va suivre et à l'aide des dessins annexés, donnés à titre d'exemplification pratique de l'invention, mais à ne pas considérer dans le sens limitatif; dessins sur lesquels: la Fig. 1 représente la vue en plan, partiellement en coupe, d'une machine circulaire équipée d'un dispositif conformément à l'invention; la Fig. 2 représente la vue en coupe suivant la ligne A-A de la machine de la Fig. 1; la Fig. 3A représente la vue schématique en plan du cylindre à aiguilles de la machine de la Fig. 1, selon une première forme de réalisation, avec un nombre d'aiguilles pair et dans laquelle la ligne de remaillage (n-m) est disposée suivant une droite diamétrale joignant deux aiguilles diamétralement opposées; la Fig. 3B représente la vue schématique en plan du cylindre à aiguilles de la machine de la Fig. 1, selon une deuxième forme de réalisation, avec un nombre d'aiguilles pair et dans laquelle la ligne de remaillage (n-m) est passante entre deux paires d'aiguilles diamétralement opposées; la Fig. 3C représente la vue schématique en plan du cylindre à aiguilles de la machine de la Fig. 1, selon une autre forme de réalisation, avec un nombre d'aiguilles impair et avec la ligne de remaillage (n-m) qui joint une aiguille du côté N avec le centre d'une paire d'aiguilles du côté M; la Fig. 4A représente la vue partielle en plan du détail agrandi du dernier rang de mailles exécuté sur le cylindre de la Fig. 3A ou de la Fig. 3C côté n, avant le remaillage; la Fig. 4B représente la vue partielle en plan du détail agrandi du dernier rang de mailles exécuté sur le cylindre de la Fig. 3A ou de la Fig. 3C côté n, avant le remaillage et avec la dernière maille (T) exécutée en retenue, c'est-à-dire non déchargée de l'aiguille de formation correspondante; la Fig. 4C représente la vue partielle en plan du détail agrandi du dernier rang de mailles exécuté sur le cylindre de la Fig. 3B ou de la Fig. 3C côté m, avant le remaillage; la Fig. 5A représente la vue en plan détaillée de la Fig. 4C dans la phase initiale de remaillage de la pointe, avec le fil de remaillage prélevé du côté (x) du tissu; la Fig. 5B représente la vue détaillée du produit manufacturé de la Fig. 4C dans la phase initiale de remaillage de la pointe, avec le fil de remaillage prélevé du côté (y) du tissu; la Fig. 5C représente la vue détaillée du produit manufacturé de la Fig. 4A, durant la phase initiale de remaillage de la pointe; la Fig. 5D représente la vue détaillée du produit manufacturé de la Fig. 4B, durant la phase initiale de remaillage de la pointe; la Fig. 5E représente la vue détaillée d'un produit manufacturé durant le remaillage de la pointe, avec deux noeuds de chaînette terminaux (I,II) pour bloquer le fil de remaillage; la Fig. 6A représente la vue en perspective d'un produit manufacturé tubulaire générique avec la pointe ouverte; la Fig. 6B représente la vue schématique du produit manufacturé de la Fig. 6A dans la phase pré-finale de fermeture de la pointe; la Fig. 6C représente la vue schématique du produit manufacturé de la Fig. 6A dans la phase finale de fermeture de la pointe; la Fig. 6D représente la vue en coupe longitudinale de la Fig. 6C; la Fig. 7A représente la vue en perspective d'une chaussette pour homme avec la pointe formée par deux bords semi-circulaires identiques et adjacents (S,R), dite "en bouche de poisson"; la Fig. 7B représente la vue schématique de la chaussette de la Fig. 7A dans la phase pré-finale de fermeture de la pointe; la Fig. 7C représente la vue schématique de la chaussette de la Fig. 7A dans la phase finale de fermeture de la pointe; la Fig. 7D représente la vue en coupe longitudinale de la Fig. 7C; la Fig. 8A représente la vue en perspective d'une chaussette pour homme avec la pointe formée par deux bords avec un nombre différent de rangs, dite "en bouche de requin"; la Fig. 8B représente la vue schématique de la chaussette de la Fig. 8A dans la phase pré-finale de fermeture de la pointe; la Fig. 8C représente la vue schématique de la chaussette de la Fig. 8A dans la phase finale de fermeture de la pointe; la Fig. 8D représente la vue de côté de la chaussette de la Fig. 8C; la Fig. 9A représente la vue en perspective d'une chaussette pour homme avec la pointe ouverte, de type traditionnel; la Fig. 9B représente la vue schématique de la chaussette de la Fig. 9A dans la phase pré-finale de fermeture de la pointe; la Fig. 9C représente la vue schématique de la chaussette de la Fig. 9A dans la phase finale de fermeture de la pointe; la Fig. 9D représente la chaussette de la Fig. 9C en vue perspective tournée de 90°; la Fig. 10A représente la vue longitudinale d'une aiguille de prélèvement des mailles à transférer; la Fig. 10B représente la vue en coupe suivant la ligne R-R de la Fig. 10A; la Fig. 10C représente la vue en coupe suivant la ligne S-S de la Fig. 10A; la Fig. 11A représente la vue de côté d'une aiguille de support des mailles en phase de remaillage; la Fig. 11B représente la vue de derrière de l'aiguille de la Fig. 11A; la Fig. 12A représente la vue de côté d'une agrafe pour le prélèvement et le retournement des mailles; la Fig. 12B représente la vue de face de l'agrafe de la Fig. 12A, avec la tête orientée vers la droite; la Fig. 12C représente la vue de face de l'agrafe de la Fig. 12A, avec la tête orientée vers la gauche; la Fig. 13 représente la vue de côté d'une pêne pour le serrage et respectivement l'ouverture de la maille sur l'agrafe de la Fig. 12A; la Fig. 14A représente la vue en plan de l'ensemble de deux agrafes et des pênes correspondants dans la position de serrage; la Fig. 14B représente la vue en coupe suivant la ligne C-C de la Fig. 14A; la Fig. 15A représente la vue en plan de l'ensemble de la Fig. 14A dans la position d'ouverture; la Fig. 15B représente la vue en coupe suivant la ligne D-D de la Fig. 15A; la Fig. 16 représente l'aiguille de la Fig. 10A au début du cycle de fermeture de la pointe d'un bas, conformément à l'invention; la Fig. 17 représente l'aiguille de la Fig. 16 dans la phase initiale d'ascension; la Fig. 18 représente la vue détaillée de l'aiguille de la Fig. 17 dans une phase intermédiaire de sa course d'ascension; la Fig. 19 représente la vue détaillée de l'aiguille de la Fig. 11 dans la phase terminale de la première ascension; la Fig. 20 représente l'aiguille de la Fig. 18 avec l'agrafe correspondante dans la phase de rapprochement de la maille correspondante; la Fig. 21 représente l'aiguille et l'agrafe de la Fig. 20 dans la phase de prise de la maille correspondante; la Fig. 22 représente l'aiguille et l'agrafe de la Fig. 20 dans la phase finale de prélèvement de la maille par le crochet; la Fig. 23 représente l'aiguille de la Fig. 20 dans la position abaissée; la Fig. 24 représente une vue en coupe verticale schématique de la machine de la Fig. 1 dans la phase de retournement des mailles du premier demi-rang; la Fig. 25 représente la vue détaillée de l'aiguille de la Fig. 11 dans la phase d'interception de la maille correspondante qui a été transférée; la Fig. 26 représente l'agrafe de la Fig. 25 en phase d'appui de la maille correspondante sur le col de l'aiguille avant l'ouverture du pêne; la Fig. 27 représente l'aiguille de la Fig. 26 dans la position soulevée pour libérer la maille correspondante qui a été transférée; la Fig. 28 représente l'aiguille de la Fig. 26 après la libération de la maille correspondante qui a été transférée; - la Fig. 29 représente l'aiguille de la Fig. 26 dans la phase de prédisposition des mailles pour le remaillage; la Fig. 30 représente l'aiguille de la Fig. 29 dans la position correspondant au remaillage des mailles qui sont montées dessus, avec l'aiguille de remaillage, le crochet correspondant et le coulisseau presse-tissu; la Fig. 31 représente l'aiguille de la Fig. 11 dans la phase d'ascension pour décharger de la languette la maille correspondante du deuxième demi-rang, selon une forme alternative de réalisation de l'invention; la Fig. 32 représente l'aiguille de la Fig. 31 dans la phase d'abattage de la maille qui a été transférée et de déchargement de la maille situé au-dessous; la Fig. 33 représente l'aiguille de la Fig. 32 dans la phase d'ascension, avec les platines fermées, pour disposer dans la condition de remaillage la maille correspondante qui a été transférée; la Fig. 34 représente l'aiguille de la Fig. 33 dans la position de fin d'ascension pour disposer la maille correspondante dans la position de remaillage.These advantages and characteristics of the invention as well as others will be more and better understood by each person skilled in the art in the light of the description which follows and with the aid of the appended drawings, given by way of practical example of the invention. invention, but not to be considered in the limiting sense; drawings in which: FIG. 1 shows the plan view, partially in section, of a circular machine equipped with a device according to the invention; Fig. 2 shows the sectional view along line AA of the machine of FIG. 1; Fig. 3A shows the schematic plan view of the needle cylinder of the machine of FIG. 1, according to a first embodiment, with an even number of needles and in which the remeshing line (nm) is arranged along a diametrical straight line joining two diametrically opposite needles; Fig. 3B shows the schematic plan view of the needle cylinder of the machine of FIG. 1, according to a second embodiment, with an even number of needles and in which the remeshing line (nm) is passed between two pairs of diametrically opposite needles; Fig. 3C represents the schematic plan view of the needle cylinder of the machine of FIG. 1, according to another embodiment, with an odd number of needles and with the remeshing line (nm) which joins a needle on the N side with the center of a pair of needles on the M side; Fig. 4A shows the partial plan view of the enlarged detail of the last row of meshes executed on the cylinder of FIG. 3A or of FIG. 3C side n, before remeshing; Fig. 4B represents the partial plan view of the enlarged detail of the last row of meshes executed on the cylinder of FIG. 3A or of FIG. 3C on the n side, before remeshing and with the last stitch (T) executed in restraint, that is to say not discharged from the corresponding training needle; Fig. 4C shows the partial plan view of the enlarged detail of the last row of meshes executed on the cylinder of FIG. 3B or of FIG. 3C side m, before remeshing; Fig. 5A shows the detailed plan view of FIG. 4C in the initial phase of remeshing the point, with the remeshing thread taken from the side (x) of the fabric; Fig. 5B shows the detailed view of the manufactured product of FIG. 4C in the initial phase of remeshing the point, with the remeshing thread taken from the side (y) of the fabric; Fig. 5C shows the detailed view of the manufactured product of FIG. 4A, during the initial remeshing phase of the point; Fig. 5D shows the detailed view of the manufactured product of FIG. 4B, during the initial phase of remeshing the tip; Fig. 5E represents the detailed view of a product manufactured during the remeshing of the point, with two end chain knots (I, II) to block the remeshing wire; Fig. 6A shows the perspective view of a generic tubular manufactured product with the tip open; Fig. 6B shows the schematic view of the manufactured product of FIG. 6A in the pre-final phase of closing the tip; Fig. 6C shows the schematic view of the manufactured product of FIG. 6A in the final phase of closing the point; Fig. 6D shows the view in longitudinal section of FIG. 6C; Fig. 7A shows the perspective view of a men's sock with the point formed by two identical and adjacent semi-circular edges (S, R), called "fish mouth"; Fig. 7B shows the schematic view of the sock of FIG. 7A in the pre-final phase of closing the tip; Fig. 7C shows the schematic view of the sock of FIG. 7A in the final phase of closing the point; Fig. 7D shows the view in longitudinal section of FIG. 7C; Fig. 8A shows the perspective view of a men's sock with the point formed by two edges with a different number of rows, called "in the mouth of a shark"; Fig. 8B shows the schematic view of the sock of FIG. 8A in the pre-final phase of closing the tip; Fig. 8C shows the schematic view of the sock of FIG. 8A in the final phase of closing the point; Fig. 8D shows the side view of the sock of FIG. 8C; Fig. 9A represents the view in perspective of a sock for men with the open toe, traditional type; Fig. 9B shows the schematic view of the sock of FIG. 9A in the pre-final phase of closing the tip; Fig. 9C shows the schematic view of the sock of FIG. 9A in the final phase of closing the point; Fig. 9D represents the sock of FIG. 9C in perspective view rotated by 90 °; Fig. 10A shows the longitudinal view of a needle for removing the meshes to be transferred; Fig. 10B shows the sectional view along the line RR of FIG. 10A; Fig. 10C shows the sectional view along the line SS of FIG. 10A; Fig. 11A shows the side view of a mesh support needle during the remeshing phase; Fig. 11B shows the rear view of the needle of FIG. 11A; Fig. 12A shows the side view of a staple for removing and turning the meshes; Fig. 12B shows the front view of the clip of FIG. 12A, with the head oriented to the right; Fig. 12C shows the front view of the clip of FIG. 12A, with the head oriented to the left; Fig. 13 shows the side view of a bolt for tightening and respectively opening the mesh on the clip of FIG. 12A; Fig. 14A shows the plan view of the assembly of two staples and the corresponding bolts in the clamping position; Fig. 14B shows the sectional view along the line CC of FIG. 14A; Fig. 15A shows the plan view of the assembly of FIG. 14A in the open position; Fig. 15B shows the sectional view along the line DD of FIG. 15A; Fig. 16 shows the needle of FIG. 10A at the start of the closing cycle of the tip of a stocking, in accordance with the invention; Fig. 17 shows the needle of FIG. 16 in the initial ascent phase; Fig. 18 shows the detailed view of the needle of FIG. 17 in an intermediate phase of its ascent course; Fig. 19 shows the detailed view of the needle of FIG. 11 in the terminal phase of the first ascent; Fig. 20 shows the needle of FIG. 18 with the corresponding clip in the phase of approximation of the corresponding mesh; Fig. 21 represents the needle and the clip of FIG. 20 in the setting phase of the corresponding stitch; Fig. 22 shows the needle and the clip of FIG. 20 in the final phase of removing the mesh by the hook; Fig. 23 shows the needle of FIG. 20 in the lowered position; Fig. 24 shows a schematic vertical sectional view of the machine of FIG. 1 in the phase of reversing the stitches of the first half row; Fig. 25 shows the detailed view of the needle of FIG. 11 in the interception phase of the corresponding mesh which has been transferred; Fig. 26 shows the clip of FIG. 25 in the support phase of the corresponding stitch on the neck of the needle before the opening of the bolt; Fig. 27 shows the needle of FIG. 26 in the raised position to release the corresponding mesh which has been transferred; Fig. 28 represents the needle of FIG. 26 after the release of the corresponding mesh which has been transferred; - Fig. 29 shows the needle of FIG. 26 in the phase of predisposition of the meshes for the remeshing; Fig. 30 shows the needle of FIG. 29 in the position corresponding to the remeshing of the meshes which are mounted thereon, with the remeshing needle, the corresponding hook and the fabric press slide; Fig. 31 shows the needle of FIG. 11 in the ascent phase to unload from the tongue the corresponding mesh of the second half-row, according to an alternative embodiment of the invention; Fig. 32 shows the needle of FIG. 31 in the phase of felling of the mesh which has been transferred and of unloading of the mesh situated below; Fig. 33 represents the needle of FIG. 32 in the ascent phase, with the plates closed, to arrange the corresponding mesh which has been transferred under the remeshing condition; Fig. 34 shows the needle of FIG. 33 in the end of ascent position to arrange the corresponding mesh in the remeshing position.

Réduit à sa structure essentielle et en référence aux figures 16 - 30 des dessins annexés, un procédé pour réaliser l'union de deux bords d'un produit manufacturé tubulaire tricoté, spécialement d'un bas, comportant la phase de fabrication du produit manufacturé avec une machine circulaire à un seul cylindre, en commençant par le bord élastique et en terminant du côté de la pointe qui reste ouverte, conformément à la présente invention, comporte dans l'ordre les phases de traitement suivantes:

  • (a) soulever un nombre prédéterminé d'aiguilles (3) d'un premier demi-rang, en retenant les mailles (8) correspondantes au moyen des platines (6), jusqu'à la zone de prélèvement (31);
  • (b) soulever ultérieurement les aiguilles (3) dudit premier demi-rang, avec les platines (6) ouvertes, jusqu'à déposer les mailles correspondantes (8) à un niveau utile pour permettre leur prélèvement successif;
  • (c) soulever un nombre prédéterminé d'aiguilles (7) avec les mailles (80) du deuxième demi-rang au même niveau que celui du premier demi-rang;
  • (d) effectuer le prélèvement des mailles (8) dudit premier demi-rang par des moyens (4,13) destinés au transfert sur des aiguilles correspondantes (7) de l'autre demi-rang;
  • (e) abaisser lesdites aiguilles (3) du premier demi-rang;
  • (f) transférer les mailles (8) ainsi prélevées avec un retournement de 180° autour d'un axe diamétral horizontal du cylindre à aiguilles (1), de manière que chaque maille (8) ainsi transférée soit enfiléee sur l'aiguille correspondante (7) du deuxième demi-rang;
  • (g) soulever les aiguilles (7) du deuxième demi-rang de manière à charger les mailles (8) du premier demi-rang qui ont été transférées et les libérer des moyens de transfert (4,13) respectifs;
  • (h) disposer les paires de mailles (8,80) superposées de chaque aiguille (7) du deuxième demi-rang étroitement juxtaposées et coaxiales, de manière à ce qu'elles soient adaptées pour le remaillage;
  • (i) soulever ultérieurement les aiguilles (7) du deuxième demi-rang avec les mailles (8,80) ainsi disposées;
  • (l) tourner avec un mouvement intermittent le cylindre à aiguilles (1) et insérer, à chaque pas, une aiguille de remaillage (9) dans une paire de mailles ainsi soulevées, en l'alimentant avec du fil (F) utilisé pour le tricotage du produit manufacturé, sans solution de continuité, et ensuite l'extraire pour former une maille de remaillage à chaînette simple;
  • (m) après l'exécution de la dernière maille de remaillage, exécuter deux ou plus de deux noeuds (I,II) de fermeture;
  • (n) effectuer la coupe du fil (F);
  • (o) abaisser les aiguilles (7) dudit deuxième demi-rang jusqu'à l'abattage, pour décharger le produit manufacturé ainsi terminé.
Reduced to its essential structure and with reference to Figures 16-30 of the accompanying drawings, a process for achieving the union of two edges of a knitted tubular manufactured product, especially of a stocking, comprising the manufacturing phase of the manufactured product with a circular machine with a single cylinder, starting with the elastic edge and terminating on the side of the point which remains open, in accordance with the present invention, comprises the following processing phases in order:
  • (a) lift a predetermined number of needles (3) of a first half-row, retaining the corresponding stitches (8) by means of the plates (6), up to the sampling zone (31);
  • (b) subsequently lifting the needles (3) of said first half-row, with the plates (6) open, until depositing the corresponding stitches (8) at a useful level to allow their successive removal;
  • (c) lifting a predetermined number of needles (7) with the stitches (80) of the second half row to the same level as that of the first half row;
  • (d) removing the stitches (8) from said first half-row by means (4,13) intended for transfer to corresponding needles (7) from the other half-row;
  • (e) lowering said needles (3) by the first half row;
  • (f) transfer the stitches (8) thus removed with an inversion of 180 ° around a horizontal diametral axis of the needle cylinder (1), so that each stitch (8) thus transferred is threaded onto the corresponding needle ( 7) of the second half-row;
  • (g) lifting the needles (7) of the second half-row so as to load the stitches (8) of the first half-row which have been transferred and free them from the respective transfer means (4,13);
  • (h) arrange the pairs of meshes (8,80) superimposed on each needle (7) of the second half row closely juxtaposed and coaxial, so that they are suitable for remeshing;
  • (i) subsequently raise the needles (7) of the second half-row with the stitches (8,80) thus arranged;
  • (l) intermittently rotate the needle cylinder (1) and insert, at each step, a remesing needle (9) into a pair of stitches thus raised, feeding it with thread (F) used for the knitting of the manufactured product, with no continuity, and then extracting it to form a single chain linkage stitch;
  • (m) after the execution of the last remeshing stitch, execute two or more of two closing nodes (I, II);
  • (n) cut the wire (F);
  • (o) lower the needles (7) of said second half-row until slaughter, to discharge the manufactured product thus finished.

Avantageusement, conformément à l'invention, ladite phase (c) peut être exécutée en premier et les phases (a) et (b) en deuxième et troisième respectivement.Advantageously, in accordance with the invention, said phase (c) can be executed first and phases (a) and (b) in second and third respectively.

De la même manière, avantageusement, ledites phases (c) et (b) peuvent être exécutées en deuxième et troisième respectivement.Likewise, advantageously, said phases (c) and (b) can be executed in second and third respectively.

En outre, pendant ladite phase (l), le cylindre (1) des aiguilles (3,7) peut tourner de manière uniforme et l'aiguille (9) de remaillage, dans ce cas, s'insère dans la paire de mailles (8,80) en suivant le mouvement du cylindre et recule ensuite pour sortir du cylindre à aiguilles et revenir dans sa position initiale.In addition, during said phase ( l ), the cylinder (1) of the needles (3,7) can rotate so uniform and the remeshing needle (9), in this case, is inserted into the pair of stitches (8,80) following the movement of the cylinder and then moves back to exit the needle cylinder and return to its initial position.

En alternative et en référence aux Fig. 31 - 32 des dessins, successivement à ladite phase (g) de libération des mailles (8) qui ont été transférées et, à la place des phases successives, il est prévu de:

  • (h') soulever les aiguilles (7) du deuxième demi-rang jusqu'au niveau de déchargé des mailles correspondantes (80);
  • (i') abaisser lesdites aiguilles (7) dudit deuxième demi-rang, avec les platines (6) ouvertes, jusqu'à disposer les mailles supérieures correspondantes (8) qui ont été transférées dans la condition d'abattage;
  • (l') soulever lesdites aiguilles (7), avec les platines (6) fermées, de manière à disposer les mailles correspondantes (8) dans la position adaptée pour le remaillage;
  • (m') soulever ultérieurement lesdites aiguilles (7), avec les platines (6) ouvertes, de manière à disposer les mailles correspondantes (8) à un niveau utile pour effectuer leur remaillage;
  • (n') tourner avec un mouvement intermittent le cylindre (1) des aiguilles (3,7) et insérer, à chaque pas, une aiguille de remaillage (9) dans chaque paire de mailles (8) ainsi disposée, en l'alimentant avec du fil (F) utilisé pour le tricotage du produit manufacturé, sans solution de continuité, et ensuite l'extraire pour former une maille de remaillage à chaînette simple;
  • (o') après l'exécution de la dernière maille, exécuter deux ou plus de deux noeuds (I,II) de fermeture;
  • (p') couper le fil (F);
  • (q') abaisser les aiguilles (7) du deuxième demi-rang jusqu'à l'abattage, pour décharger le produit manufacturé ainsi terminé.
As an alternative and with reference to Figs. 31 - 32 of the drawings, successively at said phase (g) of release of the meshes (8) which have been transferred and, in place of the successive phases, provision is made for:
  • (h ') raise the needles (7) of the second half-row to the level of discharged from the corresponding stitches (80);
  • (i ') lowering said needles (7) of said second half-row, with the plates (6) open, until the corresponding upper meshes (8) have been transferred which have been transferred in the slaughtering condition;
  • (l ') raise said needles (7), with the plates (6) closed, so as to arrange the corresponding meshes (8) in the position suitable for remeshing;
  • (m ') subsequently lifting said needles (7), with the plates (6) open, so as to arrange the corresponding meshes (8) at a level useful for carrying out their remeshing;
  • (n ') rotate the cylinder (1) of the needles (3,7) with an intermittent movement and insert, at each step, a remeshing needle (9) in each pair of stitches (8) thus arranged, feeding it with wire (F) used for the knitting of the manufactured product, with no continuity, and then extracting it to form a single chain linkage stitch;
  • (o ') after the execution of the last stitch, execute two or more of two closing knots (I, II);
  • (p ') cut the wire (F);
  • (q ') lower the needles (7) of the second half-row until slaughter, to discharge the manufactured product thus finished.

Avantageusement, conformément à l'invention, pendant ladite phase (n'), le cylindre (1) des aiguilles (3,7) peut tourner de manière uniforme et l'aiguille (9) de remaillage, dans ce cas, s'insère dans la maille (8) en suivant le mouvement du cylindre et recule ensuite pour sortir du cylindre (1) des aiguilles (3,7) et revenir dans sa position initiale.Advantageously, in accordance with the invention, during said phase (n ′) , the cylinder (1) of the needles (3,7) can rotate uniformly and the remeshing needle (9), in this case, is inserted in the mesh (8) following the movement of the cylinder and then back to exit the cylinder (1) of the needles (3,7) and return to its initial position.

Et pour ce qui concerne le dispositif pour la mise en oeuvre dudit procédé, en référence aux figures des dessins annexés, conformément à l'invention celui-ci comprend:

  • des premiers moyens à came (2) pour la commande de l'ascension et respectivement la descente d'un nombre prédéterminé d'aiguilles (3,7) d'un premier demi-rang et d'un deuxième demi-rang de mailles (8,80), lesquelles sont dans la condition active lorsque les cames de tricotage sont inactives et inversement;
  • des deuxièmes moyens à came, non représenté par simplification, pour la commande de l'ascension ultérieure et respectivement la descente ultérieure dudit nombre prédéterminé d'aiguilles (3,7) du premier demi-rang et du deuxième demi-rang, lesquelles sont dans la condition active lorsque les cames de tricotage sont inactives et inversement;
  • des moyens pour prélever les mailles (8) dudit premier demi-rang et les retourner de 180° autour d'un axe diamétral horizontal (a-a) du cylindre (1) des aiguilles (3,7), avec une paire d'agrafes (13) pour chaque maille (8), lesquels sont munis d'un évidement (130), disposé à proximité de la tête qui est dirigée vers le bas dans la position de prélèvement, et cet évidement (130) étant destiné à recevoir et retenir une maille (8) correspondante, et avec deux pênes correspondants (4) d'ouverture et respectivement de serrage pour chaque paire d'agrafes (13), lesdites agrafes (13) et les pênes respectifs (4) sont logés dans des rainures correspondantes d'un secteur semi-circulaire (5) et réalisées de manière à permettre le déplacement sur les deux faces du secteur (5) en fonction de son retournement: ledit secteur (5) étant monté tournant avec une course angulaire de 180° dans les deux directions autour d'un axe diamétral horizontal (a-a) du cylindre (1) des aiguilles (3,7), au-dessus des platines (6);
  • des moyens pour rendre solidaire ledit secteur (5) avec le cylindre (1) des aiguilles (3,7), avec un obturateur (60) radial qui, dans la position d'activation, s'engage dans une enclenche correspondante (61) d'un élément solidaire du cylindre (1) des aiguilles (3,7) sous la commande d'une came correspondante coulissant entre deux positions, l'une de blocage du secteur (5) avec le cylindre (1) des aiguilles (3,7) et l'autre de déblocage par rapport au cylindre (1) des aiguilles (3,7), mais dans une position dans l'espace constante et prédéterminée;
  • des moyens pour bloquer le boîtier des platines pendant la rotation horizontale dudit secteur (5) solidairement avec le cylindre à aiguilles (1), avec deux fourches (62) supportées par une partie fixe de la machine, coulissant en direction radiale par rapport au cylindre (1), lesquelles sont associées a deux goupilles verticales correspondantes fixées au boîtier des platines, et avec une came correspondante (64) d'actionnement qui est solidaire dudit support du secteur (5), de manière que, avec la rotation de ce dernier, au-moins une des fourches (52) avec la goupille correspondante retienne le boîtier des platines;
  • des moyens pour effectuer le remaillage des mailles (8,80) jumelées et superposées chargées sur les aiguilles (7) du deuxième demi-rang, avec une aiguille à bec (9) du type à remailler, laquelle est fixée à l'extrémité antérieure d'une tige asservie à un mouvement alternatif rotatoire autour de son propre axe et respectivement de translation alternative le long de la direction dudit axe, avec un crochet correspondant (10) disposé du côté opposé de l'aiguille (9) par rapport aux mailles (8,80), et avec un galet ou coulisseau (11) presse-tissu pour maintenir en position de remaillage les mailles (8,80) en phase de remaillage: ledit galet ou coulisseau (11) étant disposé du même côté de l'aiguille (9) de remaillage par rapport aux aiguilles (3,7) à tricoter.
And as regards the device for the implementation of said method, with reference to the figures of the appended drawings, in accordance with the invention, this comprises:
  • first cam means (2) for controlling the ascent and the descent of a predetermined number of needles (3,7) of a first half-row and a second half-row of stitches (respectively) 8,80), which are in the active condition when the knitting cams are inactive and vice versa;
  • second cam means, not represented by simplification, for controlling the subsequent ascent and subsequent descent, respectively, of said predetermined number of needles (3,7) of the first half-row and of the second half-row, which are in the active condition when the knitting cams are inactive and vice versa;
  • means for removing the stitches (8) from said first half-row and turning them 180 ° around a horizontal diametrical axis (aa) of the cylinder (1) of the needles (3,7), with a pair of staples ( 13) for each mesh (8), which are provided with a recess (130), disposed near the head which is directed downwards in the picking position, and this recess (130) being intended to receive and retain a mesh (8) corresponding, and with two corresponding bolts (4) opening and respectively tightening for each pair of staples (13), said staples (13) and the respective bolts (4) are housed in corresponding grooves of a semi-circular sector (5) and produced so as to allow displacement on the two faces of the sector (5) as a function of its reversal: said sector (5) being mounted rotating with an angular stroke of 180 ° in the two directions around a horizontal diametrical axis (aa) of the needle cylinder (1) es (3,7), above the plates (6);
  • means for making said sector (5) integral with the cylinder (1) of the needles (3,7), with a radial shutter (60) which, in the activation position, engages in a latch corresponding (61) of an element integral with the cylinder (1) of the needles (3,7) under the control of a corresponding cam sliding between two positions, one blocking the sector (5) with the cylinder (1) needles (3,7) and the other for unlocking relative to the cylinder (1) of needles (3,7), but in a position in constant and predetermined space;
  • means for locking the housing of the plates during the horizontal rotation of said sector (5) integrally with the needle cylinder (1), with two forks (62) supported by a fixed part of the machine, sliding in a radial direction relative to the cylinder (1), which are associated with two corresponding vertical pins fixed to the housing of the plates, and with a corresponding actuating cam (64) which is integral with said sector support (5), so that, with the rotation of the latter , at least one of the forks (52) with the corresponding pin retains the housing of the plates;
  • means for remeshing the mesh (8,80) twinned and superimposed loaded on the needles (7) of the second half-row, with a needle needle (9) of the type to be stitched, which is fixed to the anterior end of a rod controlled by an alternating rotary movement around its own axis and respectively of alternative translation along the direction of said axis, with a corresponding hook (10) disposed on the opposite side of the needle (9) relative to the meshes (8.80), and with a roller or slide (11) fabric press to keep the meshes (8,80) in the remeshing position in the remeshing phase: said roller or slide (11) being disposed on the same side of the remeshing needle (9) relative to the knitting needles (3,7) .

Avantageusement, conformément à l'invention, les rainures radiales dudit secteur (5) sont parallèles deux à deux, avec chaque paire orientée suivant un rayon correspondant du secteur (5) passant par l'aiguille correspondante (3) et respectivement (7).Advantageously, in accordance with the invention, the radial grooves of said sector (5) are parallel two by two, with each pair oriented along a corresponding radius of the sector (5) passing through the corresponding needle (3) and respectively (7).

En outre, il est avantageusement prévu que ladite aiguille (9) de remaillage soit positionnée derrière les aiguilles (7) du deuxième demi-rang.In addition, it is advantageously provided that said remeshing needle (9) is positioned behind the needles (7) of the second half-row.

En alternative, ladite aiguille (9) de remaillage peut être positionnée devant les aiguilles (7) du deuxième demi-rang.Alternatively, said remeshing needle (9) can be positioned in front of the needles (7) of the second half-row.

Conformément à l'invention, ladite aiguille (9) peut être asservie à un mouvement oscillant horizontal alternatif, à utiliser avec le cylindre (1) des aiguilles (3,7) tournant de manière continue.According to the invention, said needle (9) can be slaved to an alternating horizontal oscillating movement, to be used with the cylinder (1) of the needles (3,7) rotating continuously.

Avantageusement, conformément à l'invention, chacune desdites agrafes (13) est munie de deux talons (131), dépassant de chaque côté, mais alignés verticalement, pour permettre son déplacement alternatif à l'intérieur des rainures respectives dudit secteur (5) sous la commande d'une came correspondante (14) horizontale, fixe, de manière à permettre la course des agrafes (13) dans les deux directions par rapport au secteur (5) et en relation avec la position de ce dernier par rapport au cylindre (1) à aiguilles.Advantageously, in accordance with the invention, each of said staples (13) is provided with two heels (131), protruding on each side, but aligned vertically, to allow its reciprocal movement inside the respective grooves of said sector (5) under the control of a corresponding horizontal, fixed cam (14), so as to allow the travel of the staples (13) in both directions relative to the sector (5) and in relation to the position of the latter relative to the needle cylinder (1).

De la même manière, avantageusement, chacun desdits pênes (4) est muni de deux talons (40) dépassant de chaque côté et décalés verticalement pour permettre son déplacement sous la commande de ladite came (14).Similarly, advantageously, each of said bolts (4) is provided with two heels (40) protruding on each side and offset vertically to allow its movement under the control of said cam (14).

En outre, il est avantageusement prévu que lesdites agrafes (13) ont une tête avec un profil cunéiforme, pour faciliter la capture et respectivement la libération des mailles correspondantes (8) à transférer.In addition, it is advantageously provided that said staples (13) have a head with a wedge profile, to facilitate the capture and respectively the release of the corresponding meshes (8) to be transferred.

Conformément à l'invention, lesdits talons (131,40) des agrafes (13) et des pênes (4) ont une hauteur qui est prédéterminée en fonction du profil de la came de commande (14) correspondante.According to the invention, said heels (131.40) of the staples (13) and the bolts (4) have a height which is predetermined as a function of the profile of the corresponding control cam (14).

Conformément à l'invention et en référence aux Fig. 1 et 2 des dessins, ledit secteur oscillant (5) est monté fou sur deux charnières cylindriques correspondantes (50) horizontalement coaxiales et diamétralement opposées, lesquelles sont fixées sur une couronne circulaire (52) coaxiales avec le cylindre (1) à aiguilles, et il est équipé d'une fourche (51) destinée à coopérer avec un pêne vertical de commande correspondant (15) pour déclencher sa rotation alternative avec une amplitude angulaire de 180° au moyen d'une transmission correspondante à axes gauches: ledit pêne vertical (15) étant coulissant verticalement entre deux positions, l'une soulevée pour déclencher la rotation horizontale de la fourche (51) et l'autre abaissée de repos.According to the invention and with reference to Figs. 1 and 2 of the drawings, said oscillating sector (5) is mounted idly on two corresponding cylindrical hinges (50) horizontally coaxial and diametrically opposite, which are fixed on a circular crown (52) coaxial with the needle cylinder (1), and it is equipped with a fork (51) intended to cooperate with a corresponding vertical control bolt (15) to trigger its alternating rotation with an angular amplitude of 180 ° by means of a corresponding transmission with left axes: said vertical bolt (15) being vertically sliding between two positions, one raised to trigger the horizontal rotation of the fork (51) and the other lowered from rest.

Par ailleurs, conformément à l'invention et en référence aux Fig. 10A - 10C des dessins, lesdites aiguilles (3) du premier demi-rang sont munie d'une rainure (31) dans chacun des flancs respectifs, pour permettre de recevoir la tête des agrafes correspondantes (13) et permettre à ces derniers de s'insérer dans les mailles correspondantes (8), et avec un talon (33) supplémentaire par rapport à celui ou ceux de tricotage (33'), lequel est destiné à être actionné par un desdits moyens à came.Furthermore, in accordance with the invention and with reference to FIGS. 10A - 10C of the drawings, said needles (3) of the first half-row are provided with a groove (31) in each of the respective flanks, to allow the head of the corresponding staples (13) to be received and to allow the latter to s 'insert into the corresponding stitches (8), and with a heel (33) additional to that or those of knitting (33'), which is intended to be actuated by one of said cam means.

Et, en référence à la Fig. 11, lesdites aiguilles (7) dudit deuxième demi-rang sont munies d'un talon (74) supplémentaire par rapport à celui ou ceux de tricotage (74'), lequel est actionné par un desdits moyens à came, et, en outre, elles sont munies d'une rainure (71) ayant son axe (b-b) incliné vers le bas par rapport à l'axe longitudinal de la tige (73) et en direction centrifuge par rapport au cylindre (1) des aiguilles (3,7), cette rainure étant pratiquée dans un même flanc pour toutes les aiguilles (7) et étant destinée à guider l'aiguille (9) de remaillage.And, with reference to FIG. 11, said needles (7) of said second half-row are provided with a heel (74) additional to that or those of knitting (74 '), which is actuated by one of said cam means, and, moreover, they are provided with a groove (71) having its axis (bb) inclined downward relative to the longitudinal axis of the rod (73) and in the centrifugal direction relative to the cylinder (1) of the needles (3,7 ), this groove being formed in the same flank for all the needles (7) and being intended to guide the remeshing needle (9).

En alternative, ladite rainure (71) des aiguilles (7) a son axe incliné vers le haut par rapport à l'axe longitudinal de la tige (73) et en direction centrifuge par rapport au cylindre (1) des aiguilles (3,7).Alternatively, said groove (71) of the needles (7) has its axis inclined upward relative to the longitudinal axis of the rod (73) and in the centrifugal direction with respect to the cylinder (1) of the needles (3,7).

Avantageusement, dans les machines circulaires qui le permettent, lesdits talons (33,73) supplémentaires des aiguilles (3,7) coïncident avec ceux (33',73') de tricotage.Advantageously, in the circular machines which allow it, said additional heels (33,73) of the needles (3,7) coincide with those (33 ′, 73 ′) of knitting.

Il est également avantageusement prévu, en référence aux Fig. 12A - 12C, que lesdites agrafes (13) ont leur pointe repliée en correspondance de la tête, latéralement et vers l'intérieur par rapport à la direction de coulissement respective pour permettre leur insertion dans les cavités (31) des aiguilles correspondantes (3) du premier demi-rang et assurer ainsi la capture des mailles respectives (8).It is also advantageously provided, with reference to FIGS. 12A - 12C, that said staples (13) have their point folded in correspondence with the head, laterally and inwards relative to the respective sliding direction to allow their insertion into the cavities (31) of the corresponding needles (3) of the first half-row and thus ensure the capture of the respective meshes (8).

Conformément à l'invention, il devient possible de mettre en oeuvre ledit procédé avec un cylindre (1) des aiguilles (3,7) ayant aussi bien un nombre pair qu'un nombre impair d'aiguilles.According to the invention, it becomes possible to implement said method with a cylinder (1) of needles (3,7) having both an even number and an odd number of needles.

En particulier, en référence à la Fig. 3A, il est prévu de faire coïncider l'axe (a-a) de rotation du secteur (5) avec deux aiguilles diamétralement opposées, et par conséquent les mailles (8) du premier demi-rang prélevées sont égales au nombre d'aiguilles (3,7) du cylindre moins deux, divisé par deux, lesquelles sont transférées sur autant d'aiguilles (7) du deuxième demi-rang. A la fin, les mailles (80) des deux aiguilles (7) qui se trouvent aux extrémités du deuxième demi-rang et ont été exclues de la procédure du transfert des mailles (8) du premier demi-rang, sont elles-aussi remaillées.In particular, with reference to FIG. 3A, provision is made for the axis (aa) of rotation of the sector (5) to coincide with two diametrically opposite needles, and consequently the stitches (8) of the first half-row removed are equal to the number of needles (3 , 7) of the cylinder minus two, divided by two, which are transferred to as many needles (7) of the second half-row. At the end, the stitches (80) of the two needles (7) which are found at the ends of the second half-row and have been excluded from the transfer procedure of the meshes (8) of the first half-row, are also re-meshed.

En référence à la Fig. 3B, il est prévu que l'axe (a-a) de rotation du secteur (5) soit passant entre deux paires d'aiguilles (3,7) diamétralement opposées du cylindre (1) à aiguilles. De cette manière, le nombre de mailles transférées s'avère égal à la moitié du nombre total d'aiguilles.With reference to FIG. 3B, provision is made for the axis (a-a) of rotation of the sector (5) to pass between two pairs of diametrically opposite needles (3,7) of the needle cylinder (1). In this way, the number of stitches transferred is equal to half the total number of needles.

En référence à la Fig. 3C des dessins, dans le cas d'un nombre impair d'aiguilles (3,7) du cylindre (1), l'axe (a-a) de rotation du secteur (5) est passant en correspondance d'une aiguille (7) d'extrémité du deuxième demi-rang et de la ligne médiane des aiguilles (3,7) d'extrémité des demi-rangs respectifs, dans ce cas, les mailles à transférer correspondent au nombre total d'aiguilles moins une et divisé par deux, et le nombre d'aiguilles (7) du deuxième demi-rang est égal au nombre d'aiguilles (3) du premier demi-rang plus une.With reference to FIG. 3C of the drawings, in the case of an odd number of needles (3,7) of the cylinder (1), the axis (aa) of rotation of the sector (5) is passing in correspondence of a needle (7) of the second half-row and the center line of the needles (3,7) of the end of the respective half-rows, in this case, the stitches to be transferred correspond to the total number of needles minus one and divided by two , and the number of needles (7) of the second half-row is equal to the number of needles (3) of the first half-row plus one.

Le fonctionnement, en prenant comme hypothèse la disposition des aiguilles (3,7) telle que représentée sur la Fig. 3B, est le suivant.Operation, assuming the arrangement of the needles (3,7) as shown in FIG. 3B, is as follows.

Au terme du tricotage du produit manufacturé, c'est-à-dire après l'exécution du dernier rang de mailles, chaque aiguille (3) du dernier demi-rang exécuté est progressivement soulevée, en retenant la maille (8) correspondante au moyen des platines (6), jusqu'à la zone de prélèvement. Ensuite, chaque aiguille (3), avec les platines (6) disposées dans la condition d'ouverture, est ultérieurement soulevée, jusqu'à déposer la maille respective (8) à un niveau utile pour permettre son prélèvement successif (Fig. 16, 17, 18). Après quoi chaque aiguille (7) de l'autre demi-rang est progressivement soulevée, de manière à disposer la maille correspondante (80) au même niveau que l'autre (8) et éviter ainsi un étirage excessif du tissu (Fig. 19). Ensuite, chaque aiguille (3) est ultérieurement soulevée pour soulever la maille (8) correspondante et permettre sa capture par les agrafes (13), lesquelles, entre-temps, sont commandées pour avancer jusqu'à disposer leurs têtes dans les rainures correspondantes (31) (Fig. 20,21). Successivement, les pênes (4) de chaque paire d'agrafes (13) sont commandés pour avancer vers l'aiguille correspondante (3), de manière à refermer les évidements (130) des agrafes (13) et retenir ainsi à l'intérieur la maille (8) (Fig. 22). Ensuite, chaque aiguille (3) est abaissée, en entraînant le transfert définitif de la maille (8) aux agrafes (13) (Fig. 23). Après cette opération, le secteur tournant (5) est retourné de 180° au-dessus du cylindre (1) des aiguilles (3,7), avec chaque paire d'agrafes (13), de pênes (4) et la maille correspondante (8), de manière que chaque maille (8) est positionnée bout à bout et coaxiale avec une aiguille (7) de l'autre demi-rang (Fig. 24). A ce stade, chaque aiguille (7) du deuxième demi-rang est progressivement soulevée jusqu'à ce qu'elle se trouve dans et au-delà de la maille correspondante (8) du premier demi-rang. Ensuite, chaque agrafe (13) et le pêne correspondant (4) sont déplacés, de manière à compresser la maille (8) sur l'aiguille (7), après quoi elles sont ouvertes pour la libérer et permettre que le soulèvement ultérieur de l'aiguille (7) entraîne leur désengagement définitif (Fig. 25, 26, 27). De cette manière, chaque maille (8) du premier demi-rang se trouve enfilée sur le col d'une aiguille (7), au-dessus de la maille correspondante (80) de l'autre demi-rang. Ensuite, l'aiguille (7) est abaissée jusqu'en dessous des agrafes correspondantes (13). Après le déplacement en avant successif des agrafes (13), chaque aiguille (7) est soulevée, jusqu'à ce que les mailles correspondantes (8,80) se trouvent à cheval sur la rainure respective (71). Ensuite, les agrafes (13) et les pênes (4) associés à la maille (8) sont déplacés en arrière et les aiguilles (7) sont ultérieurement soulevées jusqu'à amener le tissu au niveau utile de remaillage. La prédisposition des mailles (8,80) sur l'aiguille (7) pour le remaillage peut s'obtenir au moyen du coulisseau (11) au lieu des agrafes (13) (Fig. 29). A ce stade, la rotation intermittente du cylindre (1) des aiguilles (3,7) est commandée. En correspondance de chaque pas, l'aiguille (9) de remaillage avance et, après être passée à l'intérieur des mailles (8,80) dans la rainure (71) de chaque aiguille (7), elle est alimentée avec le fil (F) qui a été utilisé pour le tricotage du produit manufacturé, sans solution de continuité, par le crochet (10), après quoi elle recule en formant une maille de remaillage en chaînette simple. Après l'exécution de la dernière maille de remaillage, ladite aiguille (9) et le crochet correspondant (10) en coopération avec le coulisseau (11) exécutent deux ou plus de deux noeuds (I,II) de fermeture. Ensuite, le fil (F) est coupé de la manière suivante. Les moyens de remaillage sont reculés pour permettre aux moyens de coupe, c'est-à-dire une petite scie coupe-fil connue en soi, d'effectuer la coupe du fil (F). Dans les machines dépourvues de cette scie, ladite coupe est effectuée au moyen de ciseaux ou de couteaux connus en soi. A ce stade, le produit manufacturé est déchargé dans la position à l'endroit, c'est-à-dire définitive, en abaissant chaque aiguille (7) jusqu'à l'abattage.At the end of the knitting of the manufactured product, that is to say after the execution of the last row of stitches, each needle (3) of the last half-row executed is gradually raised, retaining the corresponding stitch (8) by means plates (6) to the sampling area. Then, each needle (3), with the plates (6) arranged in the open condition, is subsequently raised, until depositing the respective stitch (8) at a useful level to allow its successive removal (Fig. 16, 17, 18). After which each needle (7) of the other half-row is gradually raised, so as to arrange the corresponding stitch (80) at the same level as the other (8) and thus avoid excessive stretching of the fabric (Fig. 19 ). Then, each needle (3) is subsequently raised to lift the corresponding mesh (8) and allow its capture by the staples (13), which, in the meantime, are controlled to advance until having their heads in the corresponding grooves ( 31) (Fig. 20,21). Successively, the bolts (4) of each pair of staples (13) are controlled to advance towards the corresponding needle (3), so as to close the recesses (130) of the staples (13) and thus retain inside the mesh (8) (Fig. 22). Then each needle (3) is lowered, causing the final transfer from the mesh (8) to the staples (13) (Fig. 23). After this operation, the rotating sector (5) is turned 180 ° above the cylinder (1) of the needles (3,7), with each pair of staples (13), bolts (4) and the corresponding mesh (8), so that each stitch (8) is positioned end to end and coaxial with a needle (7) of the other half-row (Fig. 24). At this stage, each needle (7) of the second half row is gradually raised until it is in and beyond the stitch corresponding (8) of the first half row. Then each staple (13) and the corresponding latch (4) are moved, so as to compress the mesh (8) on the needle (7), after which they are opened to release it and allow the subsequent lifting of the 'needle (7) causes their final disengagement (Fig. 25, 26, 27). In this way, each stitch (8) of the first half-row is threaded over the neck of a needle (7), above the corresponding stitch (80) of the other half-row. Then the needle (7) is lowered to below the corresponding staples (13). After the successive forward movement of the staples (13), each needle (7) is raised, until the corresponding stitches (8,80) lie astride the respective groove (71). Then, the staples (13) and the bolts (4) associated with the mesh (8) are moved back and the needles (7) are subsequently raised until bringing the fabric to the useful level of re-molding. The predisposition of the meshes (8,80) on the needle (7) for the remeshing can be obtained by means of the slide (11) instead of the staples (13) (Fig. 29). At this stage, the intermittent rotation of the cylinder (1) of the needles (3,7) is controlled. In correspondence of each step, the remeshing needle (9) advances and, after passing inside the stitches (8,80) in the groove (71) of each needle (7), it is fed with the thread (F) which was used for knitting the manufactured product, with no continuity, by the hook (10), after which it moves backwards, forming a single chain linkage stitch. After the execution of the last remeshing stitch, said needle (9) and the corresponding hook (10) in cooperation with the slide (11) execute two or more of two closing nodes (I, II). Then, the wire (F) is cut in the following manner. The remeshing means are moved back to allow the cutting means, that is to say a small wire cutting saw known per se, to cut the wire (F). In machines without this saw, said cutting is carried out using scissors or knives known per se. At this stage, the manufactured product is discharged into the upright position, that is to say final, by lowering each needle (7) until slaughter.

En conformité de l'invention et en référence aux Fig. 7A - 7D, pour effectuer le remaillage de la pointe d'un bas "en bouche de poisson", il suffit de réaliser avec la machine circulaire un produit manufacturé avec la pointe constituée par deux bords (S,R) curvilignes identiques et effectuer son remaillage conformément au présent procédé.In accordance with the invention and with reference to FIGS. 7A - 7D, to carry out the remeshing of the tip of a stocking "fish mouth", it suffices to produce with the circular machine a manufactured product with the tip constituted by two identical curvilinear edges (S, R) and to carry out its remeshing in accordance with this process.

Et pour obtenir le remaillage "en bouche de requin", c'est-à-dire avec la ligne de fermeture du côté de la plante du pied, il est nécessaire que lesdits bords (S,R) d'extrémité du produit manufacturé soient formés d'un nombre différent de rangs de mailles (Fig. 8A - 8D).And to obtain the "shark mouth" remeshing, that is to say with the closure line on the side of the sole, it is necessary that said end edges (S, R) of the manufactured product are formed of a different number of rows of meshes (Fig. 8A - 8D).

Pour exécuter le remaillage de la pointe d'un bas selon une forme de type traditionnel, avec le remaillage (z) se trouvant du côté du dessus ou du côté de la plante, il suffit de réaliser, avec ladite machine circulaire, un bas avec une poche de tissu (T') disposée du côté de la plante ou respectivement du dessus du pied et ensuite de procéder au remaillage de la pointe conformément au présent procédé.To carry out the remeshing of the toe of a stocking in a traditional type, with the remeshing (z) being on the side of the top or the side of the plant, it suffices to make, with said circular machine, a stocking with a pocket of fabric (T ') disposed on the side of the plant or respectively on the top of the foot and then proceed to remeshing the tip in accordance with the present process.

Claims (28)

  1. Method for seaming two edges of a knitted tubular article, particularly of a sock, comprising the step of manufacturing a tubular article with a single-needles cylinder circular machine, starting from the elastic hem and finishing at the side of the toe which is left open, the method comprising in sequence the following operative steps:
    (a) lifting a predetermined number of needles (3) of a first semirank, while holding stitches (8) by means of sinkers (6), to position the stitches at a removal region (31);
    (b) further lifting up said needles (3) of said first semirank, with said sinkers (6) being open, to dispose the respective stitches at a removal level in view of their subsequent removal;
    (c) lifting a predetermined number of needles (7) with stitches (80) of a second semirank to said removal level;
    (d) removing stitches (8) of said first semirank by means (4, 13) provided for the transfer thereof onto corresponding needles (7) of said second semirank;
    (e) lowering said needles (3) of said first semirank;
    (f) transferring said removed stitches (8) through a 180° overturning about an horizontal diametral axis of said needles cylinder (1), so that each stitch (8) thus transferred will fit a corresponding needle (7) of the second semirank;
    (g) lifting said needles (7) of said second semirank so as to load said transferred stitches (8) of said first semirank and release them from the relevant transfer means (4, 13);
    (h) placing pairs of superimposed stitches (8, 80) of each needle (7) of the second semirank tightly juxtaposed and coaxial, so that the stitches are in a linking attitude;
    (i) lifting further the needles (7) of the second semirank with stitches (8, 80) thus positioned up to a linking level;
    (l) rotating said needles cylinder (1) with intermittent motion and inserting, step by step, a linking needle (9) into a pair of lifted stitches, by feeding said linking needle without loss of continuity, with a linking thread (F) used for the knitting of said tubular article and then removing said said linking needle to form a plain linking chain-stitch;
    (m) making two or more closing knots (I, II) after having executed a last linking stitch;
    (n) cutting said linking thread (F);
    (o) lowering said needlse (7) of said second semirank down to a cast off position to unload the finished article.
  2. Method according to claim 1, characterized in that said step (c) is carried out as a first step and said steps (a) and (b) as second and respectively third steps.
  3. Method according to claim 1 characterized in that said steps (a) and (b) are carried out as a second and respectively third steps.
  4. Method according to claim 1 characterized in that, during said step (1), the cylinder (1) with needlse (3, 7) rotates uniformly, and that said linking needle (9) fits into said pair of stitches (8, 80) by following the motion of said needles cylinder (1) and said linking needle subsequently retracts to leave the trajectory of the needles of the cylinder (1) to resume its initial position.
  5. Method for seaming two edges of a knitted tubular article, particularly of a sock, comprising the step of manufacturing a tubular article with a single-needles cylinder circular machine, starting from the elastic hem and finishing at the side of the toe which is left open, the method comprising in sequence the following operative steps:
    (a) lifting a predetermined number of needles (3) of a first semirank, while holding stitches (8) by means of sinkers (6), to position the stitches at a removal region (31);
    (b) further lifting up said needles (3) of said first semirank, with said sinkers (6) being open, to dispose the respective stitches at a removal level in view of their subsequent removal;
    (c) lifting a predetermined number of needles (7) with stitches (80) of a second semirank to said removal level;
    (d) removing stitches (8) of said first semirank by means (4, 13) provided for the transfer thereof onto corresponding needles (7) of said second semirank;
    (e) lowering said needles (3) of said first semirank;
    (f) transferring said removed stitches (8) through a 180° overturning about an horizontal diametral axis of said needles cylinder (1), so that each stitch (8) thus transferred will fit a corresponding needle (7) of the second semirank;
    (g) lifting said needles (7) of said second semirank so as to load said transferred stitches (8) of said first semirank and release them from the relevant transfer means (4, 13);
    (h') lifting said needles (7) of the second semirank up to the removal level of the relevant stitches (8, 80);
    (i') lowering said needles (7) of said second semirank, with the sinkers (6) being open, to dispose transferred upper stitches (8) in a cast off position;
    (l') lifting said needles (7), with the sinkers being closed, so as to dispose the corresponding stitches (8) in a linking attitude;
    (m') lifting further up said needles (7), with the sinkers (6) being open, so as to dispose the corresponding stitches (8) at a linking level;
    (n') rotating said cyinder (1) of needles (3, 7) and inserting, one pitch at a time, a linking needle (9) into each pair of stitches (8) thus disposed by feeding said linking needle, without loss of continuity, with a linking thread (F) used for the knitting of the article and then removing said linking needle to form a plain linking chain-stitch;
    (o') making two or more closing knots (I, II) after execution of the last stitch;
    (p') cutting the knitting and linking thread (F);
    (q') lowering said needles (7) of the second semirank down to a cast off position, to unload the finished article.
  6. Method according to claim 5 characterized in that during said step (n') the cylinder (1) of needles (3, 7) rotates uniformly and in that the linking needle (9) fits into a pair of stitches (8) by following the movement of the cylinder and then moves back to leave the trjectory of the needles of the cylinder (1) to resume its initial position.
  7. Method according to claims 1-4 or 5-6 characterized in that the toe to be linked of the tubular article made by said circular machine is formed by two curvilinear edges (S, R) to allow a "fish mouth" type seam to be operated.
  8. Method according to claims 1-4 or 5-6 characterized in that the toe to be linked of the tubular article made by said circular machine is formed by two curvilinear edges (S, R) to allow a "shark mouth" type seam to be operated.
  9. Method according to claims 1-4 or 5-6 characterized in that the tubular article made by said circular machine is a sock provided with a fabric pocket (T) disposed on the side of the sole or on the back of the sock.
  10. Apparatus for seaming two edges of a knitted tubular article according to the method claimed in claims 1-4 or 5-9 comprising:
    - first cam means (2) for operating the lifting and respectively the lowering of a predetermined number of needles (3, 7) of a first and a second semirank of stitches (8, 80), which are disposed in the operative condition when the knitting cams are inoperative and vice versa;
    - second cam means for operating the further lifting of the predetermined number of needles (3, 7) of the first and second semirank, which are disposed in the operative condition when the knitting cams are inoperative and vice versa;
    - means for removing the stitches (8) of the first semirank and overturning them through 180° about a diametral horizontal axis (a-a) of the cylinder (1) of needles (3, 7), with a pair of spikes (13) for each stitch (8), which are provided with a recess (130) located in proximity of the head being turned in the removal condition, the recess (130) being intended to receive and hold therein a relevant stitche (8), and with two corresponding opening and respectively closing pegs (4) for each pair of spikes (13), which spikes (13) and respective pegs (4) are housed in corresponding slots of a semicircular sector (5) and so constructed to be moved on both sides of sector (5) according to the position of the latter with respect to the cylinder (1) of needles (3, 7) : the sector (5) being rotatively mounted for a 180° angular displacement in both directions about a diametral horizontal axis (a-a) of the cylinder (1) of needles (3, 7) on the top of sinkers (6);
    - means for connecting the sector (5) to the cylinder (1) of needles (3, 7), with a radial shutter (60) which, in operative mode, is engaged with a corresponding groove (61) of an element solid to the cylinder (1) of needles (3, 7) upon operation of a corresponding cam sliding between two positions, one for blocking the support of the sector (5) to the cylindre (1) of needles (3, 7) and the other for releasing it from same cylinder (1) of needles (3, 7) but spaced apart by a constant and preset lenght;
    - means for blocking the sinker case during the horizontal rotation of said sector (5) together with the needles cylinder (1), with two forks (62) supported on the stationary part of the machine and radially sliding with respect to the cylinder (1), which are associated with two corresponding vertical pins fixed to the sinker case, and with a corresponding actuation cam (64) which is solid to the support of sector (5) so that, by the rotation thereof, at least one of the forks (62) with relevant pin will retain the sinker case;
    - means for carrying out the linking of paired and superimposed stitches (8, 80) being fitted on the needles (7) of the second semirank, with a crookshaped linking needle (9) fixed at the front end of a rod driven into an alternate rotary motion about its axis and, respectively, into a reciprocating translatory motion along said axis, with a corresponding crochet (10) located on the said of the needle (9) opposite with respect to stitches (8, 80), and with a fabric-holding wheel or slide (11) to keep the stitches (8, 80) in linking position during the linking: the wheel or slide (11) being located on the same side of the linking needle (9) with respect to the knitting needles (3, 7).
  11. Apparatus according to claim 10, characterized in that the radial slots of said sector (5) are two-by-two parallel to each other, with each pair being oriented to a corresponding radius of the sector (5) passing through the corresponding needle (3) and respectively (7).
  12. Apparatus according to claim 10, characterized in that the linking needle (9) is positioned rearwardly of the needles (7) of the second semirank.
  13. Apparatus according to claim 10, characterized in that said linking needle (9) is positioned in front of the needles (7) of the second semirank.
  14. Apparatus according to claim 10, characterized in that said needle (9) is driven into a horizontal reciprocating oscillation motion in association with the cylinder (1) of needles (3, 7) which rotates of continuous motion.
  15. Apparatus according to claim 10, characterized in that each of the spikes (13) is provided with two heels (131) protruding from opposite sides but vertically aligned to allow them to reciprocate inside the respective slots of the sector (5) by means of a fixed cam (14), to cause the displacement of spikes (13) in two directions with respect to the sector (5) and relative to the position thereof with respect to the needles cylinder (1).
  16. Apparatus according to claim 10, characterized in that each of the pegs (4) is provided with two heels (40) protruding form opposite sides and being vertically offset to be moved by said cam (14).
  17. Apparatus according to claim 10, characterized in that said spikes (13) are provided with a head having a wedge-like profile, in order to ease the capture and respectively the release of the corresponding stitches (8) to be transferred.
  18. Apparatus according to claim 10, characterized in that the heels (131, 40) of spikes (13) and pegs (4) have a height chosen in relation to the profile of the corresponding driving cam (14).
  19. Apparatus according to claim 10, characterized in that said oscillating sector (5) is idly mounted on two corresponding cylindrical hinges (50) horizontally coaxial and diametrically opposite to each other, which are fixed on a circular ring (53) coaxial to the needles cylinder (1), and is provided with a fork (51) to be engaged with a corresponding vertical operating peg (15) to drive it into alternate motion with 180° angular displacement by means of a corresponding drive having skew axes: said vertical peg (15) being vertically sliding between two positions, a lifted one to activate the horizontal rotation of the fork (51) and a lowered one of rest condition.
  20. Apparatus according to claim 10, characterized in that the needles (3) of the first semirank are provided with a slot (31) in either sides thereof, to receive the head of the corresponding spikes (13) and allow the latter to be inserted into the corresponding stitches (8), and with a heel (33) supplementing the knitting heels (33'), which is to be activated by one of said cam means.
  21. Apparatus according to claim 10, characterized in that the needles (7) of the second semirank are provided with a heel (74) supplementing the knitting heels (74'), which is activated by one of said cam means, and are also provided with a slot (71) having an axis (b-b) inclined downwardly with respect to the longitudinal axis of the stem (73) and centrifugally with respect to the cylinder (1) of needles (3, 7), which slot is formed in a same side for all the needles (7) and is intended to guide the linking needle (9).
  22. Apparatus according to claim 10, characterized in that in certain circular machines said heels (33, 73) supplemental to needles (3, 7) coincide with the knitting needles (33', 73').
  23. Apparatus according to claim 10, characterized in that said slot (71) of needles (7) has its axis inclined upwardly with respect to the longitudinal axis of the stem (73) and centrifugally with respect to the cylinder (1) of needles (3, 7).
  24. Apparatus according to claim 10, characterized in that the spikes (13) are provided with a tip being bent in corrispondence of the head, sideways and internallyof the respective sliding direction, to allow for the insertion thereof into the recesses (31) of corresponding needles (3) of the first semirank and, thereby, ensuring the capture of the relevant stitches (8).
  25. Apparatus according to claim 10, characterized in that the cylinder (1) of needles (3, 7) has an odd or an even number of needles.
  26. Apparatus according to claim 10, characterized in that the needles (3) of the first semirank are equal in number to those of the second semirank.
  27. Apparatus according to claim 25, characterized in that the number of the needles (7) of the second semirank is equal to that of the needles (3) of the first semirank plus two.
  28. Apparatus according to claim 10, characterized in that the total number of needles (3, 7) of said cylinder (1) is an odd number, with the number of needles (7) of said second semirank being equal to that of the needles (3) of the first semirank plus one.
EP93830407A 1992-10-09 1993-10-06 Method and device for making a connection between the two edges of a knitted tubular product at the end of its formation Expired - Lifetime EP0592376B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI920194 1992-10-09
ITFI920194A IT1259688B (en) 1992-10-09 1992-10-09 METHOD AND DEVICE TO CARRY OUT THE COMBINATION OF TWO SIDES OF A TUBULAR KNIT FABRIC MANUFACTURE AT THE END OF ITS TRAINING

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EP0592376A1 EP0592376A1 (en) 1994-04-13
EP0592376B1 true EP0592376B1 (en) 1997-07-23

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EP93830407A Expired - Lifetime EP0592376B1 (en) 1992-10-09 1993-10-06 Method and device for making a connection between the two edges of a knitted tubular product at the end of its formation

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US (1) US5570591A (en)
EP (1) EP0592376B1 (en)
JP (1) JP3382684B2 (en)
KR (1) KR0137005B1 (en)
CN (1) CN1039146C (en)
AT (1) ATE155832T1 (en)
BR (1) BR9304137A (en)
CA (1) CA2108090C (en)
CZ (1) CZ280672B6 (en)
DE (1) DE69312420T2 (en)
ES (1) ES2106999T3 (en)
IL (1) IL107128A (en)
IT (1) IT1259688B (en)
MX (1) MX9306266A (en)
RU (1) RU2085637C1 (en)
SK (1) SK282337B6 (en)
TW (1) TW246701B (en)

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US6105399A (en) * 1997-12-04 2000-08-22 Fabritex S.R.L. Method and apparatus for manufacturing tubular knitted articles
US6164091A (en) * 1998-02-20 2000-12-26 Fabritex S.R.L. Method and apparatus for seaming edges of knitted articles

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IT1265881B1 (en) * 1993-07-12 1996-12-12 Fabric & Mfg Principles METHOD AND DEVICE TO MAKE THE JOINT OF TWO EDGES OF A TUBULAR KNITTED FABRIC AT THE END OF ITS FORMATION
IT1262486B (en) * 1993-07-29 1996-06-28 Paolo Frullini METHOD TO CARRY OUT THE COMBINATION OF TWO SIDES OF A TUBULAR KNITTED FABRIC MANUFACTURE AT THE END OF ITS TRAINING.
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IT1269062B (en) * 1994-05-17 1997-03-18 Golden Lady Spa DEVICE FOR CLOSING THE INITIAL EXTREME OF A KNITTED MANUFACTURE, LIKE A SOCK OR OTHER
IT1269117B (en) * 1994-06-16 1997-03-21 Golden Lady Spa DEVICE FOR AUTOMATIC INITIAL FORMATION OF A CLOSED POINT IN A TUBULAR KNITTED MANUFACTURE ON CIRCULAR KNITTING MACHINES
IT1269399B (en) * 1994-09-07 1997-04-01 Alberto Frullini METHOD AND DEVICE FOR THE TREATMENT OF TEXTILE MANUFACTURED SHIRTS
IT1278684B1 (en) * 1995-05-24 1997-11-27 Golden Lady Spa PROCEDURE AND DEVICE FOR THE INITIAL FORMATION OF A CLOSED TOE ON A CIRCULAR KNITTING MACHINE AND IN PARTICULAR FOR SOCKS
IT1278732B1 (en) * 1995-07-14 1997-11-27 Golden Lady Spa DEVICE FOR CLOSING A TUBULAR KNITTED PRODUCT AT THE BEGINNING OF ITS FORMATION ON A CIRCULAR MACHINE FOR SOCKS AND THE SIMILAR
IT1277396B1 (en) * 1995-07-28 1997-11-10 Matec Srl PROCEDURE AND DEVICE TO PERFORM THE JOINT OF TWO EDGES OF A TUBULAR ARTIFACT AT THE END OF ITS FORMATION PARTICULARLY
IT1277395B1 (en) * 1995-07-28 1997-11-10 Matec Srl PROCEDURE FOR THE PRODUCTION OF CLOSED TOE SOCKS OR SIMILAR WITH A SINGLE CYLINDER CIRCULAR MACHINE
IT1278799B1 (en) * 1995-11-28 1997-11-28 Golden Lady Spa DEVICE TO MAKE THE CLOSURE OF AN END OF TUBULAR PRODUCT ON THE SAME CIRCULAR MACHINE THAT PRODUCED IT
IT1281598B1 (en) * 1996-01-08 1998-02-20 Matec Srl CIRCULAR SINGLE-CYLINDER MACHINE FOR KNITWEAR OR SIMILAR, WITH HIGH VERSATILITY OF USE
IT1286540B1 (en) * 1996-01-31 1998-07-15 Golden Lady Spa METHOD AND CIRCULAR DOUBLE CYLINDER MACHINE FOR FORMING RIBBED SOCKS OR OTHER
IT1289504B1 (en) * 1996-12-20 1998-10-15 Lonati Spa PROCEDURE FOR THE PRODUCTION OF TUBULAR PRODUCTS, OF THE TYPE OF SOCKS OR SIMILAR, WITH A SINGLE CYLINDER CIRCULAR MACHINE
IT1304868B1 (en) * 1998-07-07 2001-04-05 Golden Lady Spa METHOD AND DEVICE FOR CLOSING THE POINT OF A TUBULAR MANUFACTURE ON A KNITTING MACHINE
IT1312444B1 (en) * 1999-05-14 2002-04-17 Lonati Spa PROCEDURE FOR THE PRODUCTION OF TUBULAR MANUFACTURES, OF THE TYPE OSIMILI SOCKS, CLOSED IN CORRESPONDENCE OF AN AXIAL END, WITH A
IT1316679B1 (en) * 2000-02-28 2003-04-24 Matec Spa PROCEDURE FOR THE PRODUCTION OF TUBULAR MANUFACTURES, IN PARTICULAR STOCKINGS, CLOSED IN CORRESPONDENCE OF AN AXIAL END WITH MACHINES
IT1316678B1 (en) * 2000-02-28 2003-04-24 Matec Spa PROCEDURE AND EQUIPMENT FOR THE PRODUCTION OF TUBULAR MANUFACTURERS, IN PARTICULAR SOCKS, CLOSED IN CORRESPONDENCE WITH
IT1316815B1 (en) * 2000-03-20 2003-05-12 Matec Spa Circular knitting machine
ITFI20010037A1 (en) * 2001-03-08 2002-09-09 Metalworking And Finance Group METHOD AND DEVICE FOR THE PRODUCTION OF TUBULAR KNITTED PRODUCTS AND IN PARTICULAR FOR CLOSING
ITFI20010038A1 (en) * 2001-03-08 2002-09-08 Metalworking And Finance Group DEVICE FOR THE COLLECTION OF A TUBULAR KNITTED MANUFACTURE FROM A KNITTING MACHINE AND FOR STITCHING THE STITCH
ITFI20010143A1 (en) 2001-07-24 2003-01-24 Fabritex Srl METHOD AND DEVICE FOR HANDLING OR HANDLING THE SHIRTS OF A TEXTILE MANUFACTURE
US7213420B2 (en) * 2001-11-09 2007-05-08 Legend Care I.P. Limited Sock
ITFI20020199A1 (en) † 2002-10-21 2004-04-22 Fabritex Srl METHOD AND APPARATUS TO JOIN THE EDGES OF A TUBULAR KNITTED FABRIC MANUFACTURE
WO2007135697A1 (en) * 2006-05-22 2007-11-29 Orion Srl Integrated system and relative device for closing the stocking on circular machines for the production of semi-finished tubular knitting
US7882711B2 (en) * 2009-06-19 2011-02-08 Massimo Bianchi Device for closing the toe at the end of tubular hosiery articles
US8443633B1 (en) * 2012-09-05 2013-05-21 Da Kong Enterprise Co., Ltd. Apparatus and method for transferring loops from the knitting machine needle
ITMI20130050A1 (en) * 2013-01-16 2014-07-17 Lonati Spa PROCEDURE FOR IMPLEMENTING THE AUTOMATED CLOSURE OF AN AXIAL END OF A TUBULAR MANUFACTURE AND ITS EXHAUST UNDER REVERSE AND EQUIPMENT FOR ITS EXECUTION.
ITFI20130081A1 (en) * 2013-04-12 2014-10-13 Gianni Conti "METHOD AND MACHINE FOR WEAVING KNITTED TUBULAR ITEMS"
TWI509121B (en) * 2013-11-15 2015-11-21 Da Kong Entpr Co Ltd Socks sewing device
KR102472303B1 (en) * 2014-10-10 2022-11-29 스타우블리 이탈리아 에스.피.에이. Method and machine for knitting tubular knitted articles
TWI570293B (en) * 2014-12-15 2017-02-11 Da Kong Enterprise Co Ltd Socks suture method and structure
TWI589747B (en) * 2015-03-04 2017-07-01 Coil folding device
CN105887324B (en) * 2015-12-07 2018-05-18 浙江海润精工机械有限公司 Shift margin to seam
US10385486B2 (en) 2017-02-06 2019-08-20 Nike, Inc. Garment for foot with triangular ankle panels
IT201800002290A1 (en) * 2018-02-01 2019-08-01 Lonati Spa Process for the production of sections of knitted product by means of a circular knitting machine with cylinder of the needles which can be operated with an alternating rotary motion around its axis.
IT201900005636A1 (en) * 2019-04-11 2020-10-11 Gianni Conti METHOD AND EQUIPMENT FOR THE PRODUCTION OF CLOSED TOE KNITTED TUBULAR PRODUCTS
CN110512359B (en) * 2019-06-10 2021-08-13 浙江叶晓机械科技有限公司 Toe sewing device and toe sewing method for hosiery machine
IT201900023577A1 (en) * 2019-12-11 2021-06-11 Lonati Spa WITHDRAWER DEVICE TO TAKE A TUBULAR KNITTED ARTICLE FROM A CIRCULAR MACHINE FOR KNITWEAR, Hosiery OR SIMILAR.
US20240011203A1 (en) * 2020-10-01 2024-01-11 Lonati S.P.A. Method for closing a knitted tubular article at an axial end thereof

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US6164091A (en) * 1998-02-20 2000-12-26 Fabritex S.R.L. Method and apparatus for seaming edges of knitted articles

Also Published As

Publication number Publication date
KR0137005B1 (en) 1998-04-28
SK282337B6 (en) 2002-01-07
JPH06228846A (en) 1994-08-16
IT1259688B (en) 1996-03-25
CA2108090C (en) 2002-12-24
IL107128A (en) 1997-01-10
MX9306266A (en) 1994-07-29
CN1039146C (en) 1998-07-15
RU2085637C1 (en) 1997-07-27
ATE155832T1 (en) 1997-08-15
IL107128A0 (en) 1994-08-26
TW246701B (en) 1995-05-01
CZ280672B6 (en) 1996-03-13
DE69312420T2 (en) 1998-02-26
CZ210793A3 (en) 1995-02-15
DE69312420D1 (en) 1997-09-04
ES2106999T3 (en) 1997-11-16
JP3382684B2 (en) 2003-03-04
ITFI920194A0 (en) 1992-10-09
US5570591A (en) 1996-11-05
CN1108710A (en) 1995-09-20
BR9304137A (en) 1994-04-26
EP0592376A1 (en) 1994-04-13
SK108793A3 (en) 1995-04-12
KR940009400A (en) 1994-05-20
ITFI920194A1 (en) 1994-04-09
CA2108090A1 (en) 1994-04-10

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