DE2142616A1 - Method and apparatus for the manufacture of a tubular element - Google Patents

Description

DR.-ING. RICHARD GLAWE

MUNICH

PATENT LAWYERS 2142616

DIPL-ING. KLAUS DELFS DIPL-PHYS. DR. WALTER MOLL

HAMBURG MÖNCHEN

8 MÖNCHEN 26 POST BOX 37 LIEBHERRSTR. 20 TEL (0811) 22 65 48

2 HAMBURG 52 WAITZSTR. 12 TEL. (0411) 89 22 55

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A 96

MUNICH

Solls Srl
Via Cassia, TAVARNUZZE, Florence, Italy

Method and apparatus for manufacturing a rohrförmi g s e lements

The invention relates to the production of trouser elements or the like. Directly on an actual two-cylinder machine. Furthermore, the invention is directed to suitable equipment. According to the invention, a tubular Element arise that is intended to form a pair of trousers with two legs, a trouser section and a waistband opening is. A knitting machine with two rows of needles should be used for this

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serve, in particular a device designed essentially as a two-cylinder machine.

The method according to the invention is characterized in that the pants section by a back and forth walking movement of the two rows of needles is generated, with rows of stitches of essentially j36o °, while the yarn moves from one row of needles to the other with each reversal, so that two tubular, open sections are knitted at the ends, which lie one inside the other and are connected to one another at the longitudinal edges are; that with continuous knitting movement and with independent yarn feed to the two rows of needles, the two Legs are made one inside the other, the outer right and inner left pointing; and that then the tubular sections and the legs are pulled apart, the inner Leg is turned so that an open symmetrical element is created.

This process can be started with the manufacture of the tubular legs, whereupon the Manufacture of the pants section follows. However, it is preferable to proceed in such a way that one starts with the preparation of the Section begins. The invention therefore also relates to a method mentioned at the outset which is characterized in that initially the pants

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cut is created by a reciprocating movement of the two rows of needles, with rows of stitches of essentially j56O arise while the yarn moves from one row of needles to the other with each cycle, so that two tubular, open at the ends Sections are knitted that lie one above the other and are connected to one another at the longitudinal edges; that then with continuous knitting movement and with independent yarn feed to the two rows of needles, the legs of one made inside the other, the outer right and inner left stitches; and that subsequent to the knitting process, the tubular sections and the legs are pulled apart, the inner leg is turned so that an open, symmetrical element is created. The two legs can completed by a more or less elastic impact tape or processed in such a way that the top closes.

If the method according to the invention is started with the production of the trouser section, the first, an elastic yarn is preferably used with the rows of stitches formed in a reciprocating motion, to create an annular elastic edge at the waistband opening.

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Advantageously, the pant section formed with a reciprocating movement can be combined from two Yarns and using two yarn guides, each of the yarns serving to to create one of the legs formed with continuous movement.

The invention further comprises an article made by the method described above.

The invention further comprises an apparatus for manufacturing the article according to the above method.

A device for carrying out the method, which can essentially be designed as a circular knitting machine, is characterized according to the invention by two devices with two circumferentially arranged, recessed coaxial needle beds, each having a row of needles, the arrangement being such that the rows of needles work independently without disturbing each other; by means for synchronously rotating the devices both alternately by an angle of approximately J> 60 ° and continuously; by means of both conveying one and the same yarn alternately to the two rows of needles during the successive reciprocating movement at each reversal

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as well as for independently conveying two yarns to the two rows of needles during the continuous movement; and by means both for alternately actuating the needles of the two rows of needles during the alternating rotation as well as for the simultaneous actuation of the needles of the two rows of needles during their continuous rotation without the needles interfering with each other. The needles form the stitches, the rows of needles working consecutively in the first case and simultaneously in the second case.

According to the invention, the two rows of needles can be provided with two coaxial cylinders having grooves each cylinder carries common needles which form the loops when they are actuated. Apart from this, there is the possibility that the two rows of needles are not cylindrical, but at least that one has, for example, a conical shape or that one is provided with radial needles. In any case the needles of one of the two rows of needles after one Another feature of the invention can be offset from the needles of the other row of needles.

Preferably, especially when using two cylindrical rows of needles, each needle is at least one of the rows of needles is flanked by two sinkers,

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with two sinkers then lying between two needles.

The invention offers the possibility of producing a trouser-shaped article directly on the knitting machine, the hisa 'training after completely the artiküder corresponds to the type mentioned at the beginning. So far, such articles have been made up of two separate tubular elements produced, which were cut in the longitudinal direction and then sewn together. This required one laborious manual activity and brought the risk of ladder and various other damage with himself.

According to the invention, the starting edge of the product, which corresponds to the federal government, made of elastic, for example crimped material, so that the Edge is created directly with production on the circular knitting machine.

Further advantages and features of the invention emerge from the following description of an exemplary embodiment based on the accompanying drawing. The drawing shows in:

1 and 2 show the type of production on a machine with two opposing cylinders;

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Pig. J3 and 4 a perspective detailed view of the Article as it is removed from the machine;

Fig. 5 is a central section along the line V-V in Fig. 4;

6 shows a perspective view of the turning of the article removed from the machine;

Figure 7 is a partial perspective view of the article after completion of the process shown in FIG. 6;

8 and 9 each show the arrangement of the needles in the two rows of needles and the plates of the cylinders of these Machine, in a central section with respect to the cylinder;

Fig. Io is a schematic radial view showing the relative arrangement of the needles and the sinkers is;

11 shows a schematic detailed view, seen in section transversely to the axis of the cylinder.

The invention is explained in principle below with reference to FIGS. 1 to 7. According to FIGS. 1 and 2 are two coaxial, oppositely arranged

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Cylinders 1 and J5 provided. The cylinder 1 carries in commonly arranged needles 5 with locking tongues at the upper end. In contrast, the cylinder 3 is turned around and carries needles 7 with hooks and locking tabs at the lower end, i.e. at the one facing the needles 5 End. With this arrangement it is possible to produce two tubular elements, which by one the cylinder, after Pig. 1 and 2 can be withdrawn through cylinder 1. The tubular elements lie thereby coaxially into one another.

At the beginning of the production process, the arrangement of the two cylinders is operated synchronously with reciprocating movements, in such a way that the cylinders rotate by at least J> 6d ° after each reversal. One cylinder rotates in one direction and the other in the opposite direction. The cylinders form alternating rows of stitches on the same object, and these rows of stitches cover an angular amount of about 56Ο or a little less. The needles of one cylinder remain inactive while the needles of the other cylinder are in operation. In addition, with every change of direction, the yarn fed to the machine - it can also be combined yarns - is transferred from the cylinder that comes to rest to the other cylinder

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transmitted, which begins with its actuation stroke. So they arise through the successive, intermittent ones Manufacturing operations performed by the needles of the two cylinders, two sections of tissue 9 and 11, of which the former is on the outside and the latter is on the inside. Every tissue section is made up from rows of stitches, which are essentially over

. ο \ ^The rows of stitches extending at an angle of 360 are not round. Rather, the courses of stitches of the fabric section 9 continue in the courses of the fabric section 11 and vice versa. With this porting of the rows of stitches within the fabric sections, two longitudinal connecting zones 13 are created. At the starting edge 9X or HX of the article, an edging made of elastic yarn can be formed in order to create an endless elastic band, the development of which is the same as that of the fabric sections 9 and 11 corresponds to about twice the outer development of a cylinder.

The above-described production of the threaded sections 9 and 11 is continued until there is a length of fabric which should correspond substantially to the length of the pant section of the finished article, i.e. the settlement between the federal government and the so-called step. A double row of stitches 15 with through

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running mesh concludes the formation of the fabric sections 9 and 11. Immediately afterwards it is with the manufacture of the two tubular fabrics 17 and started, the arrangement of the cylinders 1 and 3> performs a continuous rotation in any direction. The tubular fabric 17 thus represents the closed tubular port guide of the tissue section 9, which first intermittently during the reciprocating Movement was trained. The tubular fabric 19 is the closed tubular continuation of the fabric section 11, which was also made intermittently beforehand during the reciprocating movement. The longitudinal connecting zone I5 ends at one single point 21, which lies on the stitch end row 15. When the intermittent movement is canceled and the continuous rotation of the cylinders for manufacturing the tubular fabrics I7 and I9 is started occurs also a change in yarn feed. In one embodiment, the arrangement of the two fabric sections 9 and 11 'made with a double yarn, which is conveyed over two yarn guides. Both yarn guides move together to successively supply the needles of one and the other cylinder. When the end of stitches row I5 or point 21 is reached, this is how the twine guides separate from each other. You then assume a stationary position, so that each thread guide

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supplies the needles of an associated cylinder, independently of the supply of the other cylinder. In this case, an advantage is achieved in that the fabric sections 9 and 11, which the pants section of the article are to be made of stronger yarn than the two tubular fabrics 17 and 19, which form the legs and are therefore preferably made of thinner yarn. In another embodiment, can you suddenly replace the yarn that was used to form the fabric sections 9 and 11, namely by starting the conveyance of two thin yarns to form the tubular fabrics 17 and 19. Notwithstanding this, an arrangement is also possible in which the yarn that is used to produce the Tissue sections 9 and 11 has served, one of the tubular tissue is continuously used for this purpose 17 or 19 to train. For the other, this tubular tissue is provided with an additional independent funding began.

The production of the tubular fabric 17 and 19 is continued until one for the complete Pants has reached the required length. The tissues are pulled off through one of the cylinders, in the case of the exemplary embodiment through the cylinder 1. Do you have that If the desired length is reached, the yarn feed is interrupted, and you can then use the two tubular

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Remove tissue from the associated needles. In the manufacture of the tubular fabric 17 and I9 one can also use multiple funding and / or develop a suitable pattern or special meshes in themselves generate in a known manner.

According to FIG. 3, the article removed from the machine consists of two tubular fabrics, one of which is twisted with respect to the other. For example, if the outer surface of the tubular fabric 17 is defined as the "right" side, the corresponding "right" side of the tubular fabric 19 lies on the inner side according to FIGS. 2 and 5, due to the fact that the tubular fabric I9 has been withdrawn in the axial direction opposite to that of the tubular fabric 17, based on the orientation of the associated cylinder. Under this condition, it is ensured that the tubular fabric I9 is pulled through itself and through the tubular fabric I7 according to the arrow fl according to FIG. Then it is then pulled out in the direction of arrow f2 according to FIG. 6 from the upper side opening which is created between the starting edge HX and the connecting zones Ij5. This leads to the formation of the article according to FIG. J, the initial areas having been pulled apart in the direction of the arrow Γ5 according to FIG. The band made of elastic fabric that attaches to the starting edges 9X

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IIX adjoins, forms the collar, while the connecting zones 13 represent the step. The pants section thus consists of the fabric sections 9 and 11, and the legs consist of the tubular fabrics I7 and I9. After turning in the direction of arrow f2, the "right" side of the tubular fabric 19 is on the outside of this corresponds completely to the conditions of the tubular fabric 17 * in which the "right" side is already on the outside lies. The article can practically be regarded as finished, apart from the fact that the ends of the tubular fabric I7 and I9 are still closed, to form feet, unless you have already done so on the same machine. Is a closing not required, the tubular fabric can be provided with cuffs or with an elastic fabric will.

A device according to the invention according to FIGS. 8 to 11 can be used to carry out the above method. This is a machine with the two cylinders 1 and 5, to which reference has already been made in connection with FIGS. 1 and 2 during the manufacture of the article ».

It is essential that the mesh shape planes P5 and P7 of the needles 5 and 3 arranged on the cylinders 1 and 3 should be as close together as possible in order to

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the visible length of the connection zones between the tissue sections 9 and 11, which during the to and fro walking movements arise, reduce to a minimum. For this purpose, the actuation strokes extend 5 needles between the needles 7 and at rest vice versa. Fig. 8 shows a needle 5 during its actuation, namely supplied with a double yarn P, while a needle 7 is in its rest position, in which a locking tongue 7 A firmly closes the hook. Farther arc-shaped sinkers 55 and 77 are provided which

F correspond to those used in one of the cylinders Two-cylinder engine are arranged. In the present case, both cylinders carry plates, namely these are provided with needles similar to those used on a single cylinder machine. Farther it emerges in particular from Piguren Io and 11 that the needles 5 and 7 are offset from one another. Every The needle 7 of the yarn catching arrangement lies between two adjacent needles 5 and vice versa. Also from the Piguren Io and 11 it follows that between two adjacent Needles 5 two sinkers 55 and between two adjacent ones Needles 7 two sinkers 77 are arranged. Each needle 5 can thus be inserted between two adjacent sinkers 77 between which no needle 7 is provided. Conversely, each needle 7 between two adjacent Sinkers 55 are introduced, between which none

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Needle 5 lies. This arrangement allows free movement of the needles of one row of needles and their supply, while the needles of the other row of needles are not activated. In particular, according to Fig. Io and 11, the temporarily unactuated needles 5 to form a Row of stitches of the fabric section 9 lift freely between the needles 7 when the sinkers 77 are the last formed mesh UM according to FIG. 11 have drawn radially inward. In addition, the needles 5 can be unhindered grab the yarn F, which is fed to them in the tangential direction. Finally, be on it pointed out that it is possible to use the MeFk needles, which may be equipped with common locking tongues 5 and 7 so that their sections located next to the hooks for both circular rows of needles lie in the "same cylindrical plane and are moved outwards. In this way the capture of the yarn and the formation of the stitches very gently during the cyclic back and forth movements take place. The yarn guide carrying the yarn moves cyclically relatively between two symmetrical positions to the two stitch shape planes P5 and P7 of the needles 5 and 7. The same applies to the case in which two yarn guides for a double yarn F are provided. the Mesh shape levels P5 and P7 are therefore to be fulfilled of the above-mentioned purpose very close to each other.

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In the described embodiments it is are merely exemplary embodiments that are not of a restrictive nature. Within the scope of the invention Variations in shape and arrangement are possible.

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Claims (1)

2H2616 Claims -fij method of making a tubular Elements for forming trousers with two legs, a trouser section and a waistband opening on a knitting machine with two rows of needles, especially on a two-cylinder machine, characterized in that the Pants section is created by a reciprocating movement of the two rows of needles, with rows of stitches of essentially 3oO ° arise while the yarn at each Reversal from one row of needles to the other moves, so that two tubular, open at the ends sections are knitted that lie one inside the other and are connected to one another at the longitudinal edges; that with continuous active movement and with independent yarn feed to the two rows of needles, the two legs one inside the other are made with the outer right and inner left stitches; and that then the tubular Sections and legs are pulled apart, turning the inner leg so that one open, symmetrical element is created. 2, A method of manufacturing a tubular member to form a pants with zwei'Beinen, a pants portion, and a flange opening ¹ on a circular knitting machine - 17 2 0 9 8 10/1310 with two rows of needles, in particular on a two-cylinder machine, characterized in that initially the trouser section is produced by a reciprocating movement of the two rows of needles, rows of stitches of essentially J> 60 ° being produced, while the yarn rises from one row of needles in each cycle the other migrates so that two tubular sections open at the ends are knitted which lie one inside the other and are connected to one another at the longitudinal edges; that then with continuous knitting movement and with independent yarn feed to the two rows of needles, the two legs are produced one inside the other, the outer right and the inner left stitches; and that subsequent to the knitting process, the tubular sections and the legs are pulled apart, the inner leg being turned so that an open, symmetrical element is formed. 5. The method according to claim 1 or 2, characterized in that the first, below and moving courses formed an elastic yarn is used to make an annular create elastic edge at the waistband opening. 4. The method according to any one of claims 1 to ~ 5, characterized in that the under- - 18 20981 0/1310 2U2618 pant section formed from two yarns gathered together and using two Yarn guides is made, each of the yarns serving to one of the under continuous movement to produce formed legs. 5. Circular knitting machine for carrying out the method according to one of claims 1 to 4, gekennzeichn et by two devices (1, 5) with two circumferentially arranged, recessed coaxial needle beds, each having a row of needles, the arrangement is made so that the Work rows of needles independently without disturbing each other; by means for synchronously rotating the devices (1, 3) both alternately through an angle of approximately 360 ^° and continuously; by means both for conveying one and the same yarn (P) alternately to the two rows of needles during the successive reciprocating movement at each reversal and for conveying two yarns (F) independently to the two rows of needles during the continuous movement; and by means both for alternately actuating the needles (5, 7) of the two rows of needles during the alternating rotation and for simultaneously actuating the needles (5, 7) of the two rows of needles during their continuous rotation without the needles interfering with one another. - 19 - 209810/1310 6. Apparatus according to claim 5, characterized in that that the needles (5) of one of the rows of needles opposite the needles (7) of the other row of needles are offset. 7. Apparatus according to claim 5 or 5, characterized in that the two rows of needles with two coaxial cylinders (1, 2) are provided, which are common, when they are actuated, forming meshes Wear needles (5, 7). 8. Device according to one of claims 5 to J, characterized in that in each row of needles each needle (5 or J) is arranged between two sinkers (55 or 77), two sinkers then lying between two needles. 9. Tubular element for forming pants with two legs, a pants section and a waistband opening, which is made on a knitting machine with two rows of needles, in particular on a two-cylinder machine, characterized in that the pants section is produced by a reciprocating movement of the two rows of needles has been, with courses of essentially J56o ° have been created, while the yarn with each reversal from one row of needles to the other - 2o 209810/1310 has migrated, so that two tubular, open at the ends sections have been knitted, which into each other lie and are connected to one another at the longitudinal edges; that with continuous active movement and with independent Feeding yarn to the two rows of needles the two legs have been made one inside the other, with the outer right and inner left mesh; and that then the tubular sections and the Legs have been pulled apart with the inner leg turned so that an open symmetrical one Element was created. - 21 - 209810/1310