SK159095A3 - Knitting machine for production of tights and similar products - Google Patents

Abstract

A central moving element with a platform (57) is capable of rotating about Z-Z; on it, two epicycloidal moving elements (6-8) are mounted symmetrically and slidably and rotatably about X-X and Y-Y, each having a double needle plate (97); the two double needle plates (97) may be abutted against and aligned with each other to form an extended double needle plate for knitting the body; in each of the two double needle plates (97) during the formation of the legs, certain needles (C1) at the ends designed to be abutted against each other in the joining of the two double needle plates (97) are excluded from operation; the said needles are brought into operation at the time of the joining and formation of the extended double needle plate, so as to start the operation with the fabrics joined and to continue it and form the body with all the needles; chains (102) with links (103) carrying knitting elements are carried by rectilinear guides; curved guides (111) at the outer ends remain fixed, while curved guides (113) at the ends of the two double needle plates (97) designed to be abutted against each other are lowered at the time of the joining of the double needle plates.

Description

Technical field

The invention relates to a knitting machine and more particularly to a knitting machine for the production of tights and the like.

J · ·

BACKGROUND OF THE INVENTION

In the manufacture of hosiery, two identical trouser parts are produced separately by a conventional procedure, which are then cut and stitched to form the final hosiery. This process takes time and results in tights with a seam running through the body portion of the finished product. Attempts have been made to solve this problem by machines capable of producing the finished product, i. eliminating the subsequent stitching of the two leg sections.

The invention relates to an improvement of the machine described in Italian patent application FI 91 A 26 of 31.1.1991 and corresponding foreign patent applications, including European patent application no. No. 92830027.6 of Jan. 24, 1992 (published under No. 0552588), U.S. Pat. No. 5,226,297 filed

28.1.1992, Canadian patent application no. No. 2,060,343-7, filed

January 30, 1992, Chinese patent application no. 92100666.7 of Japanese patent application no. 9 457/92 filed

30.1.1992,

22.01.1992 and patent 30.1.1992 and others.

USSR application no. 5010968, filed

The knitting machine disclosed in these patents for the manufacture of tights and the like comprises a central movable element capable of rotating about its central axis, two rotary epicycloid movable elements (movable with an epicycloid motion) mounted symmetrically on said intermediate movable element, with shafts. located outside said central axis, each of said epicycloid movable elements receiving a rectilinear double needle bed plate with needles converging towards the working area, along each needle bed plate there being chain guide means comprising movable members with textile working members elements comprising locks, selectors and thread guides capable of interacting with the needles and lower auxiliary needles or stoppers of the corresponding double needle bed plate, means for causing rotation of said wherein the central movable member does not move, the curved guide means for annularly replenishing the rectilinear guide means for said movable members about the rectilinear double needle bed members of each epicyclloid; for rotating said central movable member for knitting the body portion with the rotation of the entire central movable member, wherein both rectilinear double needle bed plates are mutually aligned in one row, and means for retaining the movable link chain sections in a position substantially fixed with respect to to the rotatable epicycloid movable members and relative to the rotatable central movable member.

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SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the invention to simplify said machine, to make it more efficient than a textile machine, and to improve it, as will be apparent from the following, in particular by eliminating an intermediate segment of double needle bed plates.

The machine of the above type according to the invention is characterized in that said two epicycloid movable elements are supported by carriers which are longitudinally slidable on said central movable element comprising a platform to abut one another and align the double bed plates in line to form an elongated double bed. body-knitting boards, wherein said rectilinear guides for movable members carried by said sliding members on epicycloid movable (moving with epicycloid motion) elements are designed to match and form guides for chain sections along said elongated double bed plate, wherein the device comprises selective means for decommissioning, from each of the two double needle bed plates of the epicycloid movable elements, during the formation of the trousers, certain needles at the ends intended to be fitted together in a double connection wherein said needles are actuated at the time of joining and forming an elongated double needle bed plate, so that they begin to work with the knitted fabrics and continue thereto to form a body portion with all the needles, and wherein said curved guide means at said ends of both said The double needle bed plates intended to be mated to each other may be removed and discarded at the time of connection of the two double needle bed plates.

The double needle bed plates may preferably be slidably mounted on the guide means perpendicular thereto. In this way, limited temporary separation of the needle bed plates from each other can be achieved, particularly at the end of production along the double hem at the waist, to facilitate removal of the finished article when released from the needles. In this case, said curved guide means are flexible to follow the needle bed plates during their temporary separation. In this version, it is advantageous to provide chain sections comprising links which are articulated to each other in very long vertical axes without play and which are consequently vertically rigid, and said links form wheeled trolleys with horizontal axes and grooves interacting with said straight lines guiding means and said guiding means.

Other features are apparent from the contents of the dependent claims.

The invention makes it possible to simplify the above-mentioned machine, to increase its performance and to improve it overall, in particular by eliminating the intermediate segment of the double needle bed plates. The machine can also produce individual knitted fabrics in the form of socks or stockings (additional to the production of tights). Indeed, a simplified machine makes it possible to produce only those knitted articles.

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BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail in the following description by way of example with reference to the accompanying drawings, in which:

fig fig fig fig fig fig fig

1,2,3 diagrams of the various stages of knitwear production in the form of tights,

4,5,6 very schematic perspective views of the aforementioned phases and machine parts at the stated stages of knitwear production in the form of tights,

7,8,9,10,11 very schematic plan views of the main parts of the machine at various stages of the duty cycle,

12,12A, 13,14 are schematic sections where section 12 is more complete and sections 12A, 13 and 14 are of different scale and partial, showing two arrangements of working areas with needle bed plates and seaming needles, arrangements for forming a tubular article, and Arrangement to release the finished article

15.16 functional diagrams for identifying individual sections of needle bed plates with needles in operation at various stages of the knitting cycle;

17, 18 are schematic perspective views of machine parts in two stages of manufacturing the trouser and body portion, 19, 19A, 19B, a vertical section perpendicular to the plane of symmetry of the double needle bed plates and two partial magnifications of FIG. 19

20.20A, 20B Bed Separate Magnification

21.21A, 21B by bedding

22, 23, 24 enlarged and the like in FIG.

Fig.

Fig.

t * fig. Fig.

Fig.

Fig.

Fig.

* fig.

Fig.

Fig.

Fig.

vertical cross-sectional plane of symmetry of double needle plates arranged in one row but apart for trouser formation and two partial of FIG. 20, sections similar to FIG. 20, 20A and 20B, but with the needle plates aligned with each other in an arrangement on the body portion, another partial enlargement of FIG. 19, as a cross-sectional view approximately along the plane XXII-XXII in FIG. 20a are enlarged sectional views approximately along the lines XXIII - XXIII and XXIV - XXIV in FIG. 20A,

25, 26 further partial enlargements of FIG. 20 and 21, a local vertical section approximately along the plane XXVII - XXVII of FIG. 21B, a schematic vertical cross-section of the components intended for separating the needle bed plates and bringing them back together,

29.30 horizontal cross-sections of the intermediate level with two needle trouser bed plates and an extended needle trunk bed,

31,32,33A, 33B show plan views of the level of the input components of the pneumatic tensioning system in double needle bed arrangements in which they approach each other to form double needle bed plates for working on the body portion and two partial magnifications in Figs. 31 and 32, an enlarged horizontal section approximately along the plane XXXIII - XXXIII of FIG. 19B,

35,36,37 show a partial horizontal section approximately on the plane XXXV - XXXV of FIG. 19, and FIG. 35 shows an arrangement for working on trousers; FIG. 36 shows an arrangement for working on a body part, and FIG. 37 is an enlarged detail of FIG. 36 is a vertical cross-sectional view of the separate components of FIG.

a 36,

39,39A, 40 a partial vertical cross-section of the main drive components, an enlarged detail of FIG. 39 and a section along line XL - XL in FIG. 39A, FIG.

vertical sectional detail of the components of the curved section of the chain guide, for taking different levels of chain and matching guides for knitting pants

42, 43, 43A, 43B show a horizontal cross-section in the movable link section by means in an arrangement and to a reduced scale of two connected chain sections and corresponding guides in the body portion knitting arrangement, with two enlarged portions of FIG.

up to 49 different geometrical views and a chain section with movable members of the component and with working engagement with the drive ring gear.

43, and cuts the parts for knitting

DETAILED DESCRIPTION OF THE INVENTION

Fig. 1 to 16 show, in a very schematic manner, the operating principle of the machine according to the invention for producing the article M shown in FIG. 3, wherein the sequence of manufacturing processes is shown in FIG. 1 to

Said knit M has trousers MG, a body portion MG, a double hem BB, usually elastic, at waist level, closing seams P for closing the tubular article at the tips, which are formed with a certain shape obtained by gradual insertion of the needles after forming the initial seam line B with intersecting needles and a seam line C similar to lines P, which is formed in the crotch or joint area of the two body parts MB. The higher lines C extend across the finished fabric, as already mentioned in the aforementioned patents of the prior art.

trousers MG due to the stated seam line initiating the knitting of P tips and seam

Two pairs of needle bed plates 1, 2 and 3, 4 with needles inclined upwardly as shown in FIG. 12 and 14. In this way, the seam line, such as line P, C, may be formed by the interaction of the needles of two needle bed plates for engagement in a single thread at the same time. The tubular knitting is then continued with the needles of one needle bed plate, which operate independently of the needles of the other needle bed plate and with the threads F into which the needles of only one needle bed plate engage at any time, as shown in FIG. This textile method is well known, but will be described in more detail with reference to FIG. 12 to 14.

Not all needle bed plates needles 1,2 and 3, 4 are used to work on MG knitted trousers, but only needles in area G (see especially Figs. 15 and 16), which make up most of the needles present in each pair of needle bed plates except the short end group C1 needles (Fig. 15) for the purposes below. To work on individual MG trousers, each pair of needle bed plates 1, 2 and 3, 4 is allowed to rotate about the respective X-X and Y-Y axes, which are spaced relative to each other. The needle bed plates of each pair form part of an epicycloid movable element comprising a schematically indicated carrier 6 for needle bed plates 1 and 2 and a carrier 8 for needle bed plates 3, 4. The two epicyclloid movable elements with carriers 6, 8 rotate together with the pair of needle plates. of the bed plates 1, 2 and 3, 4 to form the corresponding MG pants.

Similar to the earlier patents, the chain sections, shown schematically as chain sections 12, 14, are each knitted along an annular path with linear guide sections 16-18 corresponding to the individual needle beds, each section of the chain moving along its annular path in a structure which is kept stationary on average around the rotation of the corresponding needle seat plates about the corresponding axes XX and YY. In this way, the tubular article is formed by means of textile workpieces carried by the respective individual chains 12, 14.

In the figures, two curved sections 16A, 16B and 18A, 18B of the guide for chains 12 and 14, respectively, are shown which connect the straight sections 16 and 18 of these respective guide tracks arranged parallel to each other and slightly out of relation to the corresponding needle bed plate 1, 2 and 3, 4_. The two curved sections 16A and 18A may be disabled, for example, and especially downward, for the purposes set forth below. After the knitting of both MG pants on both needle beds has been completed by rotating (about separate X-X and Y-Y axes) pairs of needle bed plates 1,2 and 3, 4 and the corresponding epicycloid movable elements 6 and Q respectively, the corresponding curved

J sections 16A and 18A of guide rails for chains 12 and 14 exclude and the pair of needle bed plates i, 2 and 3,4 are mutually »

aligned and then joined together and abutting each other as shown in FIG. 4a5, 8a9al5al6.

This connection and abutment of the pairs of needle bed plates 1, 2 and 3, 4 is achieved by sliding the epicycloid movable elements 6 and 8 onto the central movable element 20, comprising the platform shown in FIG. The connection and alignment of the needle bed plates occurs with the orientation of the needle bed plates so that the two previously inactive groups of needles C1 of the individual needle bed plates are connected. By joining and stacking the pairs of needle bed plates 1, 2 and 2, 4 by moving the epicycloid movable elements 6 and 8 on the corresponding guides of the platform 20, they form a corresponding elongated double needle bed 1, 2 and 3, 4, wherein the guides 16 and 18 are aligned together and together with the sections 16B and 18B form a path around this elongated double needle bed plate for the chain sections 12 and 14. The chain sections 12 and 14 are aligned so as to form essentially a continuous chain extending around the elongated linear double needle bed plate 1, 2; 2, 4, wherein the curved chain guide portions 16A and 18A are discarded. The two needle groups C1 form the needle group C2 shown in FIG. 16th

In these conditions of forming an elongated rectilinear double needle bed plate 1, 2; 2, 4, the formation of the body portion MB begins to rotate the central movable member 20 and said elongated linear needle bed plate about the central axis Z-Z while the two chain portions 12, 14 are driven in opposite directions so that they remain substantially immovable. In this way, the seam line C is formed by the C2 needles. the two end groups C1, C1 of the double needle bed plates 1, 2 and 3.r and wherein said end groups C1, C1 of the needles come together by joining the pairs of needle bed plates 1, 2 and 3, 4 to form a group C2. The needles of the two joined groups are driven from the beginning as shown in FIG. 12 and 12A, so that they lift the threads or threads fed to them to form a seam line C between the two trousers, while the needles of the sections G formed by the two trousers MG continue their independent work to form a knit along each of the two needle bed plates.

Once the seam line C between the crotch leg M has been completed with one or more rows of eyelets, the needles and textile workpieces cover the entire face B (Fig. 16), to form a tubular knit with a size larger than the leg size, in other words MB. In practice, the annular range (twice B) of the knit in the body portion MB corresponds to the sum of the four needle regions G and four needle regions of the four needle bed plates 1, 2 and 3, 4. After completion of the MB body formation. double elastic hem or the like, whereupon the knitted article is released.

In order to remove the finished article, particularly in the presence of the end double skirt BB of the body portion MB of the article M, and also in certain cases for other purposes during the formation of the article, it may be necessary to separate opposing and joined needle bed plates 1, 2 and 3, 4. This separation is shown in FIG. 11 and 14 for comparison with the corresponding previous figures. For this purpose, the opposing needle bed plates are guided along the corresponding guide elements of the needle bed plates 1, 2 and 3. / 4 in a manner described below. In particular, the curved guide sections 16A, 16B and 18A, 18B for the chain sections 12 and 14 are designed to be flexible to monitor the expansion (which is very limited) between the two opposing needle bed plates. This flexibility of the curved sections 16A. 16B and 18A, 18B is accompanied by the substantial rigidity of the vertical plane of the chain sections 12, 14, for example in the manner shown below. In this way, relative movement between the needle bed plates 1,2 is allowed. and 3, 4, which rotate about the Z-Z axis and relative to the chain sections 12 and 14, which are maintained in a substantially stationary position.

Having summarized the above concept on which the machine is based, a possible version of such a machine will now be described with reference to FIG. 17 to 48.

Generally shown in the figures is a frame 51 on which large diameter bearings 53 and 55 of normal cylindrical type are mounted. The bearing 53 carries a platform 57 so that it can rotate about a central axis (corresponding to the Z-Z axis of the previous schemes), the platform being the main component of the central movable member rotating about the Z-Z axis. This platform 57 (corresponding to platform 20 of the preceding schemes) engages, through slot apertures 57A and linear guides 57B (normally in the form of ball bearings) sliding along a diameter passing through the center axis ZZ, into two carriers 59 for the aforementioned epicycloid movable members 6 and 8. the carriers 59 are slidable so that they can move together and apart on the platform 57. Said carriers 59, forming part of the epicycloid movable members 6 and 8, move toward and away from each other as shown by the double arrow f59.

Each support 59 has a tubular column 63 mounted thereon by means of bearings 61, integral with the gear 65 at the bottom thereof. When the two epicycloid movable members 6 and 8 are separated from each other, the two gears 65 of the corresponding tubular posts 63 are simultaneously engaged with the lower inner teeth of the drive gear ring 67. This drive gear ring 67 has an external toothing 67A that engages the toothed gear. wheel 69 of the main drive motor 71 (FIGS. 20 and 39). Each tubular post 63 carries on its upper part one of a pair of needle bed plates 1, 2a and 3, 4 of the above schemes.

On each tubular column 63, a free rotating gear 73 is mounted that engages the upper internal toothing of the drive ring 67. Each of the free rotating gear 73 engages a corresponding gear 75 supported by a shaft 77 mounted on a corresponding carrier 59 parallel. with tubular post 63 and independently thereof. At the upper end, the shaft 77 (Figs. 20, 21, 37) carries a gear 79 that engages the free-wheel 81. A tubular column 63 is supported by bearings 83 with bearings toothed 83A, which is engaged. The housing 83 has a toothing 85 (formed by a set of rollers embedded in an annular slot in the housing) and an involute toothing 87 for the purposes below. The gear 73, 75, 77, 22, 81, 83A is formed such that the sleeve 83 rotates in the opposite direction with respect to the tubular post, to drive the chain section 63 (such as section 12, 14) to keep it in position. substantially in a stationary position while the tubular post 63 rotates and causes the double needle bed plates of the corresponding epicycloid movable element to rotate as pants are formed.

For trouser formation, the platform 57 is secured by suitable means, and the gear motor 71, which acts on the outer gear 67A of the gear ring 67, causes such rotation that the two gears 65 cause both tubular posts 63 to rotate in one direction while the corresponding bushes. 83 rotate in the opposite direction.

At its widened upper end 64Ä, the tubular post 63 of each of the epicycloid movable elements 6 and 8 engages the profiled needle plate support member 91, which then rotates together with the tubular post 63 during leg formation MG. Each of these profiled support members 91 has a broad, substantially wedge-shaped central recess 91A, and is rigidly engaged with four cylindrical guides 63 (Figs. 21A, 23) extending horizontally and on opposite sides from the central portion of the profiled member 91 to slidably support. (on opposite sides of the profiled member 61) support bodies 95, which are also profiled, for needle bed plates and for straight slide guides of both chain sections. In particular, these support bodies 95 are engaged at their upper ends with two needle bed plates 97 tilted towards each other and upwardly, for needle beds and other working textile elements of conventional design.

Each of the support bodies 95 comprises two oppositely oriented guides 99, horizontal and parallel to the needle bed plates 97, which correspond to guides 16 and 18 of the above schemes. These linear guides consist of rectilinear protrusions 99 facing each other in opposite directions, in other words one up and one down, on each side, and consequently supporting each support body 95. These protrusions are in the form of a blade, in other words pris, and are used. to guide the wheels 101 on the chain sections 102, equivalent to sections 12 and 14. Specifically, each displacement member 103 of the chain sections 102 (see also FIGS. 42-49) is provided with two grooved rim wheels 101 that engage the guide lugs 99. Each chain link 103 is arranged vertically to support the wheels 101 with horizontal axes spaced apart and acting on two opposite projections 99 and to form the couplings 105A and 105B (upper and lower) with the vertical axes and spaced apart, to connect with adjacent links 103 .

The links 103 have, on the outside, with respect to the axes of the vertical couplings 10A, 105B and the guide planes defined by the projections 99 and the wheels 101, bearing blocks 103A which can contact the corresponding bearing blocks of adjacent links along the straight sections of the chain section path. is defined by the protrusions 99 of the linear guides parallel to the needle beds. These bearing blocks 103A have adjusting screws. With these arrangements, all play in both the horizontal and vertical directions of the chain sections in the arrangement of the links with the couplings 105A can be avoided. 105B spaced apart and with adjustable bearing blocks 103A between the couplings.

In the position between the wheels 101, each chain link 103 has a roller 107 with a vertical axis which is mounted so that it projects downwardly from the walls 109 formed by the link itself. A limited gap is formed between said wall 109 and said roller 107. This gap lies substantially in the geometric plane defined by the prismatic protrusions 99. In engagement with the two support bodies 95 which are movable relative to each other along the guides 93 in the plane in which the projections 99 lie, the ends of the curved strip 111 extending between the two support This curved strip 111 is deformable to provide a connection in any connection or removal arrangement, still with relative limitations, between the profiled bodies 95 and consequently between the The needle 111 serves only to guide the links 103 of the chain sections 102 in a radial direction, in other words, horizontally, when surrounded between the rollers 107 and the walls 109 of the links 103, which are positioned along the connection formed by the curved strip 111 while the chain stiffness vertical the direction is secured by the structure of the chain links 103 as described above.

The connection formed by the strip 111 is that which is located outside the needle bed plates, elongated by joining the pairs of needle bed plates 97 that correspond to the needle bed plates 1, 2 and 3, 4 in the schemes described above. Each curved guide 111 substantially corresponds to guide 16B and diagrams. In the assembly shown, the flexible strip 113 (corresponding to the curved guides 16A, 18A in the above-described scheme) engages two portions 115 which are articulated (see in particular Figs. 25, 26, 41) by coaxial pins 117 with two profiled bodies 95 which they form guides 99 for corresponding links 103 of the chain section 102.

18B in said ends of the next

The two parts 115 are operated simultaneously as described below to move the corresponding strip 113, as indicated by the arrow f113, from a raised position substantially symmetrical to that of the fixed strip 111 to a disengaged and lowered position, as indicated by the arrow f113, around the pins 117 This is achieved by means of clutch means 119 operated in the manner described below. In this way, the curved connector strip may be disabled by operation as described above in the basic diagrams of the first figures, with respect to the curved sections 16A and 18A, when the needle bed plates 97 are aligned and aligned with each other to form the extended needle bed plates. for working on the body part.

Below the lower hinge 105B, each of the links 103 of the chain sections 102 has a horizontally movable resilient tooth capable of interacting with the toothing 82. More specifically, each link 103 has a prismatic seat formed therein in which the sliding tooth 123 is disposed. 125 and on the inside becomes a wedge portion 123A capable of penetrating between the profiled teeth 87 of the toothing 87 formed on the housing 83. The tooth 123 is moved outwardly by a spring hooked to a pin 129 which engages the cell 103 and passes through the housing at the tooth 123 a wheel 131 formed in said tooth 123. The wheel of each tooth 123 may interact with a wall 91C formed by a frame 91E integral with the profiled member 91. This frame 91E extends from opposite sides of the member 91 to form the two walls 91C acting on the wheels 125 resilient. of the teeth 123 for pushing and positioning them exactly in engagement with the teeth 87 in respect of which the walls 91C remain in a fixed position irrespective of the movements with which the chain part 102 formed by the links 103 can be exposed as a result of movements of the support bodies 95 and hence the projections 99 and the chains 102 along the horizontal guides 93. to the more or less close relative position of the support bodies 95, and hence the chains 102 formed by the links 103, the teeth 123 are always engaged with the chain teeth 87 and without play.

As described above, the transmission between the toothed ring 67 and the toothed wheel 65 causes rotation of the tubular post 63 and, as a result, the entire assembly is supported by the profiled member.

91, also forming the walls 91C, rotates in one direction, while the gear 73, 75, 79, 81, 83A causes the housing 93 and consequently the toothing 87 to rotate in the opposite direction. While the epicycloid moving member rotates about the XX and YY axes in such a way that, due to the parts forming a profiled member 91, the chain teeth 87 rotate in opposite engagement of the teeth 123 with the teeth 87 running a chain section 102 (formed by links 103) in the opposite direction on the guides formed by the rectilinear protrusions 99 and the curved strips 111, 113, so that it remains in a substantially fixed position in the space while still conforming to the relative shape of the guides with which the chain section is slidably engaged.

The needle bed plates 97 are mounted on the profiled member 91, as mentioned above, by the corresponding support bodies 95, and therefore the two needle bed plates 97 (which correspond to the pairs of needle bed plates 1, 2 and 3, 4 in the basic schemes) also rotate. with a tubular post 63. The chain section formed by the links 103 carries working textile components intended to interact with needle sinkers and needle members or stoppers and other elements combined with needle bed plates 97. The drawings generally show, by way of example, an electromagnetic selector mechanism 133 for controlling the pod members. and a lock assembly 135 and a lock follower for acting on the needle nodes, with an arrangement known per se. The relative movement between the needle bed plates and the chain section causes the relative movement of the working textile elements 133 and 135 relative to the needle bed plates and the needles associated therewith. In this way, the necessary conditions are achieved to control the needles and their choice for the partial and increased stroke of the needles to achieve knitting.

Other elements attached to the links of the chain section to achieve a yarn feed and other operations are shown in FIG. 12 to 14 and will be described below.

During the formation of the MG trousers as mentioned above, the two carriers 59 with the elements attached thereto, in particular pairs of needle bed plates 97 (corresponding to needle bed plates 1,2 and 3, 4), are separated from each other along the guides 57A of the platform 57 which remains immobile. In a separate arrangement of the two carriers 59, the gears 65 and 73 are engaged and rotated by the drive ring 67.

During the formation of the MG trousers, the trousers must be kept energized, and for this purpose, inside each pillar 63 is a suction tube 141 which rotates with the tubular pillar 63 and which can be moved in the axial direction with respect thereto as described below. The suction tube 141 has at its top a connection profile 141A for the suction slot 141B, passing beneath two needle bed plates 97 and between them for storing the article during formation of the corresponding leg MG and for keeping it under tension by mechanical means of known type or preferably via suction. air flow. The suction flow is formed from the collector 143 by a hose 145 which is curved to connect the cavity 59A of the corresponding carrier 59 and from this cavity inside the suction tube 141 through slots 64E in the tubular column 63 and lattice slots 141H in the suction tube 141. and held against lattice slots 141H during its formation.

The suction tube 141 is open at the lower end and is provided with a shoulder sleeve 141L and a lower closure 147 with flat sections or equivalent means. The two closures must remain closed during the formation of the article when the suction is to be developed by the collector 143 and the hose 145 for pneumatic tensioning, while one of the two closures 147 must be open for suction, transport and discharge by the corresponding suction tube 114 to interrupt the suction from the collector. 143 and a hose 145. The pneumatic take-off force is exerted by a pneumatic conveyor clutch 149 which is positioned at a position that each carrier 59 for rotating the epicycloid movable elements must assume during body formation to align the axes XX and YY of the two epicycloid movable elements. 6 and 8 and for body part formation. Each connector 149 may be lifted by the actuators 150 and is connected to the fabric take-off hose 151 at the right time by means not shown and activated at the right time to force the finished fabric to move through the suction tube 141, the connectors 141L, 149 and The blowing can be secured from the opposite connector 149 to facilitate pneumatic transport of the finished article.

As mentioned above, after forming the MG trousers and to form the seam line C and then the body portion of the MG, the two carriers 59 of the epicycloid movable elements 6 must be aligned with their axes XX and YY towards the central axis of the machine ZZ around which the platform 57 can be rotated as shown below. The movements of the two carriers 59 in the direction of the double arrows f59 are developed as described below. When the epicycloid movable elements 6 and 8 are joined, it is necessary to remove the curved sections 113 which are opposed to each other in the mutually adjusted configuration of the needle bed plates 97 so that the needle bed plates can be joined. Further, the suction slots 141B and the suction tubes 141 need to be lowered for the reasons mentioned above, and precisely center the upper portions of the epicycloid movable elements 6 and 8, and in particular the elements of the corresponding profiled support members 91 which form the corresponding frames 91C, 91E.

These frames 91E (see in particular Fig. 30) consequently have on the inside 91E1, in alignment with the alignment of the needle bed plates for alignment, a set of pins 91K and corresponding sliding bushes to ensure mutual centering when both sides 91E1 of the frames 91E are profiled of the members 91 coupled so as to ensure alignment and stability of the connection between the upper portions 6 and 8, which must stop independent of rotation, to ensure alignment of the needle bed plates in alignment and forming the extended needle bed plates, which then rotate with platform 57 to form the body portion MB.

In order to form the body part, the knit which is wider than both MG pants must also be kept under tension. It is therefore necessary to provide a pneumatic tensioning which is substantially uniform over the entire range of needle bed plates formed by the alignment of the needle bed plates 97. For this purpose, the suction tubes 141 and corresponding profiles 141A and slots 141B are lowered, which is enabled by the presence of cavities 91A formed by profiled members. 91. The actuated assembly of the intake systems 141, 141A and 141B is shown in FIG. 21, 21A and 26. In addition to this lowering, the inner walls of the suction slots 141B and consequently the walls 141C that come into contact with the approach of the carriers 59 must be removed. These walls 141C are therefore configured in the form of flaps which can rotate (see also Figs. 31, 32, 33A, 33B) about the vertical axes 141E by the action of additional portions 141F that press against the arms 141G of the opposing flap 141C when the two slots 141B are joined. In this removal of the flap walls, the suction slot formed by the two jointly connected suction slots 141B becomes continuous and deep throughout the longitudinal extent of the double elongated needle bed plate formed by joining the two pairs of needle bed plates 97 that formed the trousers.

the reimbursement of members 115 and, consequently,

Each of the two suction tubes 141, which can slide vertically in the corresponding column 63, carries (see in particular Figs. 25, 41, 42) a toothed rack 171 parallel to the corresponding tube 141 which engages the gear 173 supported by the shaft 175A. This shaft is slidably coupled to a coaxial shaft 175B. the two shafts being supported by two support bodies 95. The two shafts are integral with the crank discs 176, on whose eccentric wheels 177 are articulated couplings 119. In this arrangement, the racks 171, the gear 173 of the shaft 175 and the couplings 119 cause the corresponding suction. the tubes 141 around the axis defined by the pins 117 at the correct time of lowering and withdrawing the corresponding yielding strip 113, which is located at the ends of the needle bed plates 97. which are stacked together when the two carriers 59 are joined.

These retraction movements of the curved sections 113 are performed simultaneously with the lowering of the suction slots 141A, 141B and the suction tubes.

141, so that during the formation of the body part, pneumatic tensioning of the article can be performed. The lowering of the tubes 141, which (as described below) coincides with the joining of the two epicycloid movable elements 6 and 8 and consequently of their two carriers 59, brings the coupling bushings 141E into position and against the couplings 149 which are located below the tubes 141 to form of the pneumatic connection between the tubes 141 and the removal channels 151. Upon completion of the article and its release, one of these tubes will be activated for pneumatic suction and removal of the object while opening the corresponding sector lock 147.

The manner in which the carriers 59 of the epicycloid movable members 6 and 8 are moved on the platform to bring them together and move them apart, to stack or separate the pairs of needle bed plates 1, 2 and 2, 4 from the schemes shown and described will now be described. in the introduction. As can be seen in particular from FIG. 19, 19B, 19A and 33, the motor 201, engaged at the correct moment, drives the bevel gear 203 and the axial toothed or friction clutch 205 (controlled by the controller 206 supported by the fixed structure 1) by a vertical shaft 207 extending along the center axis of the Z-Z machine. The shaft 207 extends into two gear boxes 209, 211 constructed with pairs of worm gears 213, 215 having perpendicular axes. Each gearbox 209 and 211 causes rotation of the corresponding horizontal shaft 217 and 219.

The two shafts 217 and 219 extend from corresponding opposite sides of the two-section gear boxes 209, 211 in the form of a counter-threaded threaded rod. A corresponding threaded bushing is attached to each of the two counter-threaded rods, namely the shaft casing 221 for the shaft 217 and the casing 223 for the shaft 219. The bushings 223 are integral with the carriers 59 by moving them along the guides 57B of the platform 57. attached to the lower shaft 217 (see FIG. 33) carry pins 227 with rollers 228, by means of which the bushes 221 are engaged with the blocks 231 which slide between two plates 233, provided with slotted cams 241 in which the rollers 228 slide The bushings 221 (FIGS. 33 and 27) are thus connected to two blocks 231 that can slide between the two plates 233. The plates 233 extend from the middle bush 235. This middle bush 235 is mounted on the bearings 237 so that it can rotate around pillar 239 supported centrally by the frame

51st

In view of the foregoing, the lower shaft 217 forming the two opposed threaded rods can move the blocks 231 between the two plates 233 to bring them together and apart simultaneously with connecting and separating the two carriers 59 through which the ball track guides 57B pass. 223. Both plates 233 are provided with cams extending through slots 241 which are designed to cause lifting and lowering of the suction tubes 141 and elements connected thereto, and in particular the suction slots 141B. This ensures the transverse drive of the blocks 231 driven by the shaft 217 simultaneously with the movement of the carriers 59 by the shaft 219. Specifically, when both epicycloid movable members 6 and 8 approach the median axis ZZ of the needle bed plate alignment machine, the cams 241 operate via rollers 228 s. operating the suction tubes 141 and the elements connected thereto, and consequently the suction slots 141B and the racks 171, thereby ensuring the processes described above. The reverse process of shifting the two epicycloid movable elements causes the opposite movement of the orifice 141B and the racks 171 and, consequently, the return of the curved guides 113 to the raised horizontal position to activate the running of the leg sections.

The platform 57 must be held during rotation of the trousers on its bearing 52, but must be rotatably driven to form the body portion MB. To secure the platform 57 to the frame 51 and release it from the frame to allow it to rotate, an actuator 251 (Figs. 39, 39A, 40) with two sliders 251 slidably mounted in the bushes 254 on the frame 52 serves. forming part of the movable member 257 on the platform 57 and pushed towards the actuator 251 by the spring 258 so that the end gearing on the additional member 257B engages the internal upper gearing of the toothed ring 67.

When actuator 251 is activated, it pushes both sliders 253 into the bushings of the pins 255 to secure the platform 57, while the pins 255 and the movable member 257 are pushed against the spring 258 to release the toothed additional member 257B from the internal upper gearing. Thus, the platform 57 is secured and the toothed ring 67 can rotate. When the actuator 251 ceases to operate, the sliders 253 are pulled out of the bushings of the pins 255 and the movable member 257, pushed by the spring 258, engages the toothed additional member 257B with the toothed ring 67, rotating which causes the platform 57 to rotate.

The platform 57 can therefore begin to rotate at the correct moment when the needle seat plates 97 have been joined and aligned with each other by bringing the two epicycloid movable elements 6 and 8 together with the Z-Z axis, including the carriers 59 and the elements attached thereto. At the same time, the epicycloid movable members and with them the tubular posts 63 interrupt the rotation, while the bushes 83 remain free with respect to the separation of the gears 65 and 73 from the drive ring 67.

Rotation of the platform 57 causes rotation of the elongated double needle bed plates formed by the alignment of the needle bed plates 97 together, in other words, the needle bed plates 1, 2 and 2, from the above basic schemes. When the needle bed plates are stacked together, the straight guides 99 of the support bodies 95 for the needle bed plates 97 are stacked together and the two chain sections 102 formed by links 103 and designated as sections 12 and 14 in the basic schemes are also stacked together. An extension of the sliding guides of the links 103 of the chain 102 is formed from the straight edges 99 and the yielding curved sections 111, which remain outside of each other a pair of straight edges. This elongation is greater or corresponds to the sum of the chain sections 102, so that in practice a continuous chain is formed along the path that now surrounds the elongated double bed plate formed in the above manner.

In this arrangement, it is also necessary to hold a continuous chain that carries the knitting elements, while the central movable element, with the platform 57 and the two helically movable elements locked against rotation, rotates about the central Z-Z axis, thereby rotating the extended needle bed plates. In order to ensure that the chain is held against rotation and consequently the needle bed plates slide relative to the knitting elements carried by the chains, the chains in the reciprocal arrangement of the two epicycloid movable elements are held as described below, in particular with reference to FIG. 35 to 38.

At the level of the toothing 85 formed by the pulleys inserted in the annular groove of the housing 83, there is a pair of plates 301 which form two opposed inner toothed segments 303 centered on the Z-Z axis. The two toothed segments 303 are spaced apart so as to allow the carriers 59 to move them from a separate position in which the trousers are formed to an approached position to form an elongated double needle bed plate, and hence to form the body portion. On one of said plates 301, two arms 307 are articulated at points 305, which can be moved by means of corresponding actuators 309. Each arm carries a further segment of internal toothing 311. The two segments 311 move from the retracted position to the combination position with the toothed inner segments 303 to form a continuous internal ring gear 303, 311 after the two epicycloid moving elements 6 and 8, and thus the two carriers 59 have been approached and aligned and connected together. When this is internal ring gear 303. 311, can cooperate with the pulley teeth 85 of the two bushes 83.

When the platform 57 begins to rotate, the bushes 83 move in the direction of rotation of the platform 57 and roll with their pulley teeth 85 within the inner ring gear 303, 311, thereby rotating the bushes 83 in the opposite direction with respect to the platform. The outer teeth 87 of the bushes 83 therefore also rotate in a direction opposite to the platform. The number of teeth in the internal toothing 303, 311 is equal to the number of chain links formed by the sum of the two chain sections 102 designated as chain sections 12 and 14 in the schemes shown at the beginning, and thus the number of chain links 103 formed after joining the two epicycloidly movable elements 6 and 8. Consequently, with each rotation of the platform 57, and hence the elongated double needle bed plates formed by the needle bed plates 97, the toothing 87 causes the continuous chain formed by the two chain sections 102 to slide in the opposite direction so that the needle bed plates rotate. the continuous chain formed by the two chain sections is held against rotation. The needle bed plates thus slide in front of the knitting elements carried by the chain links 103, allowing the body portion MB and subsequently the elastic flange BB to be knitted, further loosening the finished article and sucking it through one of the suction tubes 141 whose closure 147 has been opened to activate the suction. for pneumatic removal of the finished article being pulled from the second suction tube 141, cut off from the stretching suction.

Obviously, movements that are opposite to those described for the sequence of work operations on the article are used to return the device to previous states. This is also true of separating the epicycloid movable elements 6 and 8 from each other, and therefore the carriers 59 with the elements attached thereto, to secure the platform 57, to re-lift the suction tubes 141, and hence the suction slots 141B, re-closing the flaps 151C. in other words, the removal allowed pneumatic tensioning of the body portion MB along the connected slots 14IB), to re-open the segments 111 at the correct moment and to reactivate the rotation of the posts 63 and other processes.

Referring to the initial basic diagrams, it has already been stated that at certain stages of the machine operation, and in particular at the end of the formation of the end hem BB and the ejection of the product and hence the end hem between the two needle bed plates kept as close together as possible separating, in other words, expanding, opposing needle bed plates of pairs of needle bed plates. The manner in which these needle bed plates are moved by sliding the support bodies 95 and hence the needle bed plates 97 along the horizontal transverse guides 93 supported by the profiled support member 91 with the tubular post 63, 63A of each epicycloid movable member 6 and 13 will now be described. .

Inside each of the tubular posts 63, a further working tube 401 is disposed between the post and the suction tube 141, which is sliding axially but independently of the suction tube 141 within the tubular post 63. This working tube 401 is also provided with slots next to the grating slots 141C. tubes 141 to provide suction through the cavity 59A of the carrier 59 for pneumatically stretching the article during knitting. Each of these working tubes 401 terminates below a ring 403 provided with bearings inside the block 405 that traverse along the tubular guides 407 supported by the frame 409. The blocks 405 and consequently the rings 403 can follow the approach and zoom movements of the two epicycloid moving elements 6a. 8, while they can be simultaneously moved up and down by the operating system described below, which acts on the frame 409. This frame 409 has a central core 411 with which the upper end of the cylindrical slide 413 engages on the roller bearings 412, which can slide inside. a central pillar 239 extending upwardly from the base of the frame 1.

Said cylindrical runner 413 has a threaded bushing on its bottom /

415, with which the threaded shaft 417 is engaged, rotated by a bevel gear 419 driven at the right time by the actuator. The slider 413 and consequently the threaded sleeve 415 can slide but cannot rotate relative to the post 239, and therefore the rotation of the threaded shaft 417 causes the cylindrical slider 413 and the frame 409 and the blocks 405 to rise and lower. , which moves up and down under control by the actuator acting on the gear 419.

All these components are designed, as mentioned, to induce the separation and proximity of two needle bed plates supported by epicycloidly movable elements 6, 8 as well as the extended needle bed plates formed by the abutment of two needle bed plates 97 (referred to as plates 1, 2 and 3). 4.) in the above basic schemes. The frame 409, together with the elements associated therewith, can rotate around the cylindrical slider 413 due to the presence of the bearings 412.

The knitting elements carried by the movable members 103 of the chain sections 102 and designed to interact with the needles supported by the needle bed plates will now be described. First of all, it should be noted that the knitting elements are of essentially known type and operate in a manner known to those skilled in the art. These knitting elements can be expanded to accomplish special work, such as patterning and patterning the trouser leg, as well as the knitted body portion, which is formed as a uniform knit that does not pass through the seams between the knitted knitted parts, as with conventional pantyhose. The textile elements of the machine, in the components of the needle bed plates, such as needles and elbow members or sinkers, and in the components carried by the movable links of the chain section, may be such that the article can be anatomically shaped, e.g. position, at the right time, some of the needle locks, in other words, the eyelet-forming lock, to increase the back dimensions in the lumbar portion of the worn article.

It is also possible to provide for the formation of a reinforcing wedge and / or reinforced five by using thread guides, in other words, guides guided so as to cyclically enter the yarn feeding position and leave this position by means of the thread cutting means of the double thread yarn lines. at the end of creation The principles of all these systems are well known and can be easily adapted to the machine.

In the drawings, and in particular FIG. 12 to 14 and 22 to 26 are shown needles 501 and 502 of the needle bed plates 1, 2, to which small levers or needle sinkers 503, 504 are articulated with concealed projections for withdrawing the needles under the action of the pullers 506 and 507. Obviously, the elongate members or stoppers 508 and 509 with selection lugs, interacting with the magnetic selectors 133 and with a lift lock such as a needle selection lock 511 in a variety of ways (1: 1, 1: 2, 1: 3 or sample formation). In the figures, the moving yarn guides 513 and 515, 515A for supplying yarns to the needles are further shown. All these mechanisms are known.

In FIG. 12, which is a cross-sectional view of a machine in which the needles (in both plate needle beds) are shown in a position for preparing an arrangement known as the seam line forming line P or C, the needle 501 is shown in the highest position to remain during subsequent seam formation . The needles 501 are arranged with a 2: 1 option or other options. The remaining needles of the same needle bed plate (not shown) are also raised and. then triggered by the lock puller when the yarn is taken from the yarn guide 513. The needle 502 of the opposite needle bed plate 2 is shown in the descent phase under the action of the puller 506 and takes up the yarn from the yarn guide 515. All other needles of the same plate needle bed work in the same way.

Fig. 12A shows the crotch region C forming phase. The needle 501 with the other needles in the 2: 1 option remains in the up position in the form of a comb, while the needle sinker 503 with the concealed projection cannot be pulled by the puller 507 because its projection is inserted into the sliding grooves in the needle bed plate. Also at this stage, the remaining needles of the same needle bed plate 1 are raised and then contracted by the puller 507 because their corresponding needle sinkers 503 are not inserted in the grooves. These needles extend through the yarn from the yarn guide 513. This allows the yarn to be conveyed from one end of the needle bed plate to the other without forming a bridge of the knitted yarn.

In the opposite needle bed plate 2, on the other hand, the needles 502, also with a 2: 1 option or equivalent arrangement, physically confuse the connection between the two portions of what will then be a tubular article. The needles 502 are shown in the descent phase under the action of the puller 506. Therefore, they have projections of their respective oscillating needle sinkers 504 in the active position. In their stitch-forming position, the needle 502 also places the yarn of the guide 515 (which is lifted) on the stems of the needles 501, thereby forming a seam line connection P or C. In the same needle bed plate 2, the second needles excluded from option 2: 1 are not raised. and therefore remain idle at this stage.

Fig. 13 shows the formation of a tubular article with its two sides MG1 and MG2, each of which is formed by two opposing needle bed plates.

Fig. 14 shows the formation of an elastic flange BB at the edge of the body portion MB. Within the tubular article of the MB body part, two other hoses are formed which form said lip BB. This process also forms part of the prior art. Said rim is normally formed, due to the decommissioning of two of the three or three of the four needles (or otherwise), in such a way that the first needles hold the inserts placed thereon, reaping! what the other is the pockets that make the BB bead. The needle bed plates 1, 2 are easily separated from each other to facilitate the shedding of the finished article when the skirt BB is released by the needles that formed it.

It is to be understood that the drawing illustrates only an example of a practical demonstration of the invention, and that the invention may be subject to variations in shape and configuration without departing from its basic idea. The presence of reference numerals in the claims serves only to increase their readability with respect to the description and drawings, and does not limit the scope of the invention expressed in the claims.

Claims (16)

PATENT CLAIMS A knitting machine for the manufacture of tights and the like, comprising a central movable element capable of rotating about its central axis, two rotary epicycloid movable elements disposed symmetrically on said central movable element, with shafts disposed off said central axis, with each of said said an epicycloid movable member is provided with a rectilinear double needle bed plate with needles converging towards the working area, and along each needle bed plate are arranged chain guide means comprising movable members with textile working elements including locks, selectors, and thread guides capable of interacting with needles and lower auxiliary needles or stoppers corresponding to a double needle bed plate, means for causing rotation of said epicycloid movable elements for knitting each of the two trousers on corresponding to the double needle bed plate while the central movable member does not move, the curved guide means for annular filling of the linear guide means for said movable members about the linear double needle bed plates of each epicycloid movable member, means for causing rotation of the medial movable member rotating the entire central movable member, the two rectilinear double needle bed plates aligned with one another, and means for retaining the chain sections with the movable links in a position substantially fixed relative to the rotatable epicycloid movable member and relative to the rotatable central movable member. element, characterized in that said two epicycloid movable elements (6,8) are longitudinally slidable on said containing platform (57), supported by carriers (59), the central movable element, the relative abutment and the alignment of the double bed plates (1,2; 3.4; 97) in order of operation, of each of the plates (1,2; 3,4; 97) to form an elongated double bed plate for knitting the body portion, said rectilinear guides (16, 18; 99) for the movable members (103), supported by said sliding members on the epicycloid movable members (6,8) are designed to match and form a guide for the chain sections (12,14; 102) along said elongated double bed plate, the device comprising selectives for disengaging from both double needle bed epicycloid movable elements, during trouser formation, of certain needles (C1) at the ends intended to be mated together in the connection of the double bed plates (1,2; 3,4), said needles being actuated at the time of connection and forming an elongated double needle bed plate, so that they start working with the knitted fabrics (C) and continue it, forming the body part (MB) with all the needles, and om the curved guide means (16A, 18A, 113) on said both ends of said double needle plates (1,2; 3.4; 97), intended to be seated together with each other, may be removed and discarded at the time of connection of the two double needle bed plates. 2. Knitting machine for the manufacture of tights, stockings, socks and the like, comprising at least one rectilinear double needle bed plate with needles converging towards the working area, for working on a closed end, and needle bed plate of tubular knitted fabric, in particular knitted fabric containing around said double annular guide means for chain sections comprising movable members with textile working elements comprising locks, selectors and thread guides operable to interact with the needles and the lower auxiliary needles or squeegees of a linear double needle bed plate, characterized in that two the needle bed plates (95,97) are displaceably mounted on the guide means (93) perpendicular to them to allow limited temporary separation of the needle bed plates, particularly at the end of the body portion production along the double band flange (BB). A machine according to claim 1 or 2, characterized in that it comprises flexible curved guide means (16A, 18A; 16B, 111,113) for following the needle bed plates during their temporary separation. Machine according to claim 3, characterized in that the chain sections (12,14; 102) carrying the textile working elements interacting with the needle bed plates comprise links (103) that are very long vertically and are articulated to each other by vertical axes they are free of play and are therefore rigid in the vertical direction, and said members comprise carriages (103) with wheels (101) with horizontal axes and grooves interacting with said linear guide means (99) and said flexible curved guide means (111,113). Machine according to at least one of Claims 1 to 4, characterized in that it comprises external adjustable projections (103A) on the chain section links (103) which cooperate to reinforce the chain in the rectilinear sections. Machine according to at least claim 1, characterized in that it comprises, in combination, an actuator (201) with a transmission (203,205,207, 209,211) for inducing, at two vertically separate levels, symmetrical movement of said sliding carriers (59) carrying said two epicycloid movable elements (6,8), in particular with counter-threaded rod means (217,219). Machine according to at least one of claims 1 and 6, characterized in that it comprises tubes (141) for the pneumatic suction of the article to be produced on said epicycloidly movable elements (6,8), said tubes being vertically movable and having suction profiles and slots (141B) on their upper portions, which are attached and aligned with each other in association with said sliding carriers (59) of the epicycloid movable members (6,8); and means for triggering the lowering of said suction tubes (141) to connect said carriers (59). Machine according to claim 7, characterized in that said working means comprise symmetrical cam profiles (241) capable of triggering the lowering of said suction tubes (141) with the connection of said supports (59) carrying epicycloid movable elements. Machine according to claim 7 or 8, characterized in that each of said suction tubes (141) is connected to a gear (171, 173,119) capable of causing rotation of the supports (115) carrying corresponding movable curved guides (113) about a horizontal axis (117). Machine according to at least one of Claims 1 to 9, characterized in that it comprises, in combination, on each epicycloid movable element (6,8) a housing (83) with a toothing (87) for driving a corresponding chain section (102), rotatable in a direction opposite to the direction of rotation of the epicycloid movable member, the toothing (87) engaging a chain section for driving it in a direction opposite to the direction of rotation of the epicycloid movable member and needle bed plates, teeth (123A) disposed on said chain section , resiliently protruding towards said toothing and wall (91C) in a fixed position on said movable member, for engaging without play with said teeth (123A) on said movable member, in any arrangement of separating the two needle bed plates (97) from each other. A machine characterized by a housing (83) according to at least one of claims 1 to 10, characterized in that it comprises a toothing (85) integrally with said and on a fixed frame an internal circular toothing with segments (303,311) which can be combined after joining said two epicycloid movable members (6,8), said toothing (85) orbiting said inner ring gear with segments (303,311) rotating the central movable member with the platform (57) to drive the chain sections in opposite direction to the rotational direction of the intermediate movable member the element (57), and so to hold them in a substantially fixed arrangement. Machine according to at least claim 2, characterized in that it comprises a work system (417,413,409,403) with pusher elements (401) on said two epicycloid movable elements, each of the pusher elements (401) acting on articulated parallelogram systems (425,427) for the current one. and symmetrical movement of the needle bed plates. Machine according to at least one of Claims 1 to 12, characterized in that it comprises on each of the two epicycloid movable elements a tubular post (63) and a working tube (401) for separating the needle bed plates, and a suction tube (141), said tubes are coaxial and rotatable with the tubular post (63) and can be moved vertically independently of each other. Machine according to at least one of Claims 1 to 13, characterized in that it comprises a single motor (71), driving an internally toothed ring (67) for alternating rotation of the epicycloid movable members (6,8) and the intermediate movable member with the platform ( 57). Machine according to claim 7, characterized in that said two suction slots (141B) have, at the ends joined when the body part knitting arrangement is reached, a side flap wall (141C) which is discarded with the connection of the two needle bed plates. Machine according to at least one of claims 1 to 15, characterized in that it comprises coaxial tubular elements (63,401,85) on each of the epicycloid movable elements (6,8) for performing the desired operations and for controlling the suction channels.