JPH10310958A - Circular knitting machine provided with device for transferring loop of formed knit product from needle of needle cylinder half body to needle of other needle cylinder half body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circular knitting machine for producing a circular knit product closed especially at one longitudinal end. SOLUTION: This circular knitting machine is provided with a needle cylinder 2 capable of being rotated on its own axis 2a and with a device 5 for transferring a loop formed with one half needle 4 of the needle cylinder 2 to the other half needle 4 of the needle cylinder 2. Therein, the device 5 contains a half dial 6, which has a means 26 for picking up a yarn or loop. The means 26 can be moved in the radial direction based on the half dial 6 for picking up, holding or releasing the yarn or loop. The half dial 6 can be turned on the diameter-directed axis 7 of the needle cylinder 2 with the picking means 26 to face to one half needle 4 of the needle cylinder 2 or to the other half needle 4 of the needle cylinder 2. The half needle 6 is received in the needle cylinder 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The invention relates to a device for transferring the knitting loop formed by the needles of one half of a needle cylinder to the needles of the other half of said needle cylinder, in particular to one longitudinal end. The invention relates to a circular knitting knitting machine for producing a tubular knitted product closed in a section.

[0002]

BACKGROUND OF THE INVENTION Knitted articles are manufactured and the ends of these knitted articles are closed directly on a knitting machine and a subsequent stitching or looping process is performed to close the ends. Circular knitting machines which do not need to be added are known.

[0003] Japanese Patent Application No. 8-1924 in the name of the same applicant
No. 65 has already disclosed a method of forming a closed-toe knit with a single-cylinder circular knitting machine equipped with a half-dial at the upper end of a needle cylinder that can be inverted about a diameter axis. The half dial has a plurality of hooks, which can be moved radially with respect to the needle cylinder, in particular in slots formed in the half dial. The tip of each hook is pulled out of the half-dial so that each hook tip receives the thread dispensed from the feed or drop of the knitting machine, and this thread is knitted by the needle of the needle cylinder sandwiching the hook. A hook is itself positioned between two adjacent needles on one half of the needle cylinder. In a first step of the method described in this patent application, the needle cylinder is actuated to pivot about its own axis n with a pivot angle of substantially 180 °,
The needle cylinder halves opposed by the half dial are moved past the front of the feed or drop of the knitting machine. During these swings, the pick-up element, one end of the hook, is drawn radially from the half dial towards the needle of the knitting machine and at least one thread is dispensed in the corresponding feed, with each swing , One of the half needles of the needle cylinder facing the half dial
/ N to the operating position while holding them at equal intervals, and changing the needles that are moved to the operating position during the next swinging motion or swinging motions, and removing these needles after taking up the yarn or yarns. Lower and rest on pick-up element. In a second step, the pick-up element is retracted towards the half-dial with the thread or threads still resting. In the third stage, heel knitting is performed by the needle of the needle cylinder half opposite the half dial. In a fourth step, the half dial is turned around its diameter axis and arranged so as to face the other half of the needle cylinder. In the fifth stage, the yarn or yarns held by the pick-up element are transferred to the needle of the other half of the needle cylinder, and in the sixth stage the knitted product is completed as a continuation of the previously performed knitting The knitting machine is operated as follows.

[0004] Other methods of manufacturing a closed heel knit have all used a half dial which is inverted about a diameter axis, as described, for example, in Italian Patent No. 676,845.
Alternatively, as described in Italian Patent Application No. FI93A-128, for example, a half ring is used which is arranged around the needle cylinder close to its upper end and which can also be turned around the diameter axis. Said half-ring also comprises a plurality of hooks housed in radial slots, which hooks are withdrawn from the half-ring and the loop of the knitted product is moved from the needle of one half of the needle cylinder to the needle cylinder. Transfer to the other half of the needle.

In either method, the function of the half-dial or half-ring is simply to retain the loop formed by the needles of one half of the needle cylinder and to convey it to the needles of the other half of the needle cylinder. ,
Alternatively, the loop is transferred from the needle of one half of the needle cylinder to the needle of the other half of the needle cylinder.

[0006] In any case, in the conventionally proposed knitting machines, the half dial or half ring for performing these operations is arranged at the upper end outside the needle cylinder. This construction has the disadvantage and disadvantage that the presence of the half-dial and its hooks creates an additional volume of the working area of the needle and hinders the performance of certain knitting steps.

[0007] This is the case, for example, for pile knitting. In practice, for this knitting operation, special sinkers are used, which are usually arranged in a sinker ring arranged at the upper end of the needle cylinder. The operation of the sinker for knitting pile knitting interferes with the operation of the half dial hook.
Therefore, in order to carry out the method of the type described in Japanese Patent Application No. 8-19246, it is necessary to give up pile knitting in the early stage of forming a knitted article. It is therefore necessary to knit a first knitting row, which is practically free of pile knitting, which involves the production of knitted articles which are unsatisfactory from an aesthetic point of view.

An object of the present invention is to provide a circular knitting machine comprising a device for transferring a knitting loop formed by a needle of one half of a needle cylinder to a needle of the other half of the needle cylinder. Without interfering with other possible knitting processes of the knitting machine due to the presence of
One object of the present invention is to provide a circular knitting machine capable of producing a knitted product which is closed at one end.

[0009]

SUMMARY OF THE INVENTION Within the scope of the above-mentioned object, it is an object of the present invention to provide a knitting machine with a device which does not interfere with the operation of the sinker, especially in pile knitting.

It is another object of the present invention to provide a knitting machine with a loop transfer or transport device that does not obstruct the needle working area when not in use.

It is another object of the present invention to provide a knitting machine that provides high precision and reliability in operation.

The above objects, objects and other objects which will become apparent from the following description are achieved by the following inventions.

A first feature of the present invention is that at least one needle cylinder, which can be rotated about its own axis, and a loop formed by the needle of one half of the needle cylinder, the other half of the needle cylinder A device for transferring and transporting the thread or loop, the device comprising a half-dial having pick-up means for picking up the thread or loop, the pick-up means being half-turned for picking up and holding or releasing the thread or loop. It can be moved radially with respect to the dial, the half dial facing the needle of one half of the needle cylinder or the needle of the other half of the needle cylinder by the pick-up means, so that the diameter of the needle cylinder To the needle in one half of the needle cylinder, which can be inverted about the directional axis Circular knitting machine provided with a device for transferring or conveying the knitting loop formed as described above to the other half of the needle of the needle cylinder, wherein the half dial is housed inside at least one needle cylinder. is there.

A second feature of the present invention is that the half dial is firmly connected to the needle cylinder in its rotation about its own axis.

[0015] A third feature of the invention is that the half dial is mounted on a support part, the support part being housed inside at least one needle cylinder and moving in command along the axis of the needle cylinder. Is what you can do.

A fourth feature of the present invention is that the half dial and the supporting part have a recess around the needle cylinder axis for passing the knitted article.

A fifth feature of the invention is that the area of the half dial occupied by the pick-up means has a symmetrical shape around the axis of the needle cylinder and with respect to a diametric plane perpendicular to the diametric axis. , 180 ° or less.

According to a sixth feature of the present invention, the pick-up means includes:
Hooks slidably received in radial slots formed in the half dial, the hooks having heels, the heels of which invert the half dial in either direction about a diametric axis. When it is in one of two possible positions, it protrudes upwards and downwards from the slot and engages a hook actuating cam arranged on the support part.

A seventh feature of the present invention is that the hook operation cam is activated or deactivated according to a command.

An eighth feature of the invention is that the support part has an outer cylinder, which is arranged coaxially inside the needle cylinder and which rotates reliably with the needle cylinder around its axis, It can also be translated along an axis, and the outer cylinder is to support the half dial so that the half dial can swing about a diametric axis.

A ninth feature of the invention is that the support part has an inner cylinder arranged coaxially inside the outer cylinder, the inner cylinder being above its flat surface facing the half dial. And the inner cylinder can be rigidly connected to the support structure of the knitting machine to maintain a stationary state during rotation of the needle cylinder about its own axis.

A tenth feature of the present invention is that the inner cylinder is divided into two parts, a first part and a second part, wherein the first part is prevented from rotating about the axis of the needle cylinder, and The two parts support the working cam and
With regard to rotation of the needle cylinder about its axis, it can be commandedly connected to the first part or outer cylinder.

An eleventh feature of the present invention is that the support component is connected to a duct for sucking a knitted article arranged inside the needle cylinder.

A twelfth feature of the present invention resides in that a stepping motor for moving a supporting component along the axis of the needle cylinder is provided.

A thirteenth feature of the present invention is to provide a stepping motor for turning the half dial around a diametric axis.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings, but the present invention is not limited thereto.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 to 9, the knitting machine according to the invention, indicated generally at 1, comprises a needle cylinder 2 which is rotated about its own axis 2a and which is known per se. As shown in FIG. 5, a plurality of slots 3 are provided on the curved surface, and a needle 4 is accommodated therein.

The knitting machine according to the invention also includes a device 5 for transferring or transporting the knitting loop formed by the needles of one half of the needle cylinder to the needles of the other half. Said device 5 comprises a half dial 6 with means for picking up a needle or a loop, as shown in FIGS. The pick-up means can be commanded radially with respect to the half-dial 6 to pick up and hold or release the knitting loop or the yarns constituting the knitting loop.

The half dial 6 is turned around the diametric axis 7 of the needle cylinder 2 so that the needle of one half of the needle cylinder is opposed to the needle of the other half of the needle cylinder via the pickup means. You can do it.

According to the present invention, the half dial 6 is housed inside the needle cylinder 2 as shown in FIG.

More specifically, the half dial 6 is mounted on a support part 8 which is housed inside the needle cylinder 2 and can be commanded along the axis 2a of the needle cylinder.

The support part 8 comprises an outer cylinder 9 arranged coaxially inside the needle cylinder 2.

The outer cylinder 9 has axial slots 10 along its skirt and these slots 10 are connected to a key 10a provided in the corresponding needle cylinder 2 so that the outer cylinder 9 It is always connected to the needle cylinder 2 during rotation about the axis 2a, while retaining the ability to make translational movements along the axis 2a.

The support part 8 also includes an inner cylinder which is coaxially arranged inside the outer cylinder 9 and is divided into two parts 11 and 12.

The part 11 of the inner cylinder faces the half dial 6 by one flat surface and the part 12 by the other flat surface, and this part 12 is connected to the cylinder support 13 or the support structure of the knitting machine. Thus, only translational movement along the axis 2a is possible without rotating around the axis 2a.

In particular, as shown in detail in FIG. 2, a connecting pin 14 is interposed between the part 12 and the part 11, and this pin 14 makes the part 11 rotatable with respect to the part 12. Connect. More specifically, a pin 14 is received in a corresponding seat 15 formed in portion 11 and is resiliently springable toward portion 12 by a spring 16 to receive the distal end of pin 14 therein. A corresponding seat 17 is provided.

In the seat 17 of the part 12 the piston 1
An air cylinder provided with a piston 18
The piston shaft passes through the seat 17 and releases the pin 14 from said seat 17, so that the part 11 can be disengaged from the part 12 for rotational movement about the axis 2a.

In fact, when the pin 14 is engaged with the seat 17, the part 11 is rigidly connected to the part 12 and the axis 2a
Rotational movement of the surrounding portion 11 is prevented, but when the piston 18 is actuated to disengage the pin 14 from the seat 17 as described in detail below, the portion 1
1 can rotate freely around the axis 2a.

A magnetic connection is provided between the part 11 and the outer cylinder 9, the magnetic connection comprising, for example, a permanent magnet 20 or a ferromagnetic plate arranged on the inner curved surface of the outer cylinder 9 and the outer curve of the part 11. Ferromagnetic plate 21 arranged on the surface
Alternatively, these ferromagnetic plates 21 create a magnetic connection between the outer cylinder 9 and the inner cylinder part 11 opposite the permanent magnets 20. This degree of connection is such that it is effective only when the pin 14 is disengaged from the seat 17, that is, only when the part 11 of the inner cylinder is disengaged from the part 12.

The half dial 6 covers about 180 ° about the axis 2a, and in particular, as shown in FIG. 4, the diametric surface 2 of the needle cylinder 2 arranged at right angles to the diameter axis 7.
3 is substantially symmetrical.

The half dial 6 further includes a pair of pivots 2.
5a and 25b are pivotally mounted about the diametric axis 7 on two shoulders 24a and 24b of the outer cylinder 9, which shoulders are two diametrical surfaces of the flat surface of the outer cylinder 9 supporting the half dial 6. Extends from the opposing area.

The loop or thread pick-up means includes a plurality of hooks 26 slidably received in suitable radial slots formed in the half dial 6.

As shown in FIG. 10, each hook 26 includes an upper heel 26a and a lower heel 26b projecting from the half dial 6 into an upper section and a lower section, respectively.
These heels are, according to the position taken by the half dial 6 rotating about a diametric axis 7, a part 11 of the inner cylinder.
Is formed so as to oppose and engage an operation cam disposed on the flat surface of the first member toward the half dial 6.

As shown in FIG. 5, the operation cam includes an extraction cam 30 and a retraction cam 31. The extraction cam 30 is moved in a direction away from the axis 2a of the needle cylinder 2 by a half dial 6.
Is formed so as to cause the movement of the hook 26 along the corresponding slot, and the retraction cam 31 is formed to move the hook in the opposite direction.

The extraction cam 30 and the retraction cam 31 can be commanded by, for example, an air cylinder 32 in a direction parallel to the axis 2a.
Air is supplied by a duct 33 housed within 1 and connected to the part 12 of the inner cylinder, thus actuating the cam, i.e. it interferes with the upper heel 26a or the lower heel 26b of the hook 26. And the cam is moved to a non-operating state, that is, a position that does not affect the heel of the hook 26.

The hooks 26 are preferably arranged symmetrically with respect to the diametrical surface 23, as shown in FIG.
It occupies an arcuate area of the half dial 6 covering an angle of less than 180 ° around.

The support part 8 and the half dial 6 have recesses 34, 35 around the axis 2a of the needle cylinder 2 for passing the braided product.

In the case of a single-cylinder knitting machine, the suction hose 36 of the knitted product can be fixed to the support part 8 in the recess 35.

The means for rotating the half dial 6 about the diametric axis 7 preferably comprises a stepper motor 37, as shown in FIG. 9, which is connected to a suction hose 36 as explained in detail in FIG. Combined, moving Bowden cable 40 by bevel gear pair 38, 39,
The cable slides in the sheath 41 and the sheath 41
Reaches the pivot 42. This pivot 42 is arranged in the middle area of the extension of the half dial 6 and is connected to this half dial by a fork-like part 43.

More specifically, the bevel gear 38 is keyed on the cylinder shaft of the step motor 37 and meshes with the bevel gear 39.
The frame 45 is fixed to a suction hose 36 and supports a step motor 37. A female screw 46 is provided coaxially with the bevel gear 39, and a second shaft 47 having an external thread is engaged with the female screw 46. The second shaft 4
7 is fixed to an end of the Bowden cable 40 opposite to the end engaged with the half dial 6.

The movement along the axis 2a of the supporting part 8 and the half dial 6 which moves accordingly is likewise effected by a stepping motor 50. This stepper motor 50 is mounted on a suction hose 36 and engages with a female screw formed in a block 52 by its output shaft 51 having an external thread, which block 52 is connected to a support structure 53 of the knitting machine. It is fixed. In effect, actuation of the stepper motor 50 causes the suction hose 36 and thus the support part 8 to move along the axis 2 a of the needle cylinder 2.

For a device for transferring or conveying a loop knitted by one half-needle of a needle cylinder to a needle of the other half of the needle cylinder, a single-cylinder circular with a conventional dial on the needle cylinder Although a knitting machine has been described, it should be understood that the knitting machine can be installed on a multi-cylinder circular knitting machine and housed in a lower needle cylinder or, preferably, an upper needle cylinder.

Hereinafter, the operation of the knitting machine according to the present invention will be described with reference to FIGS. 10 to 16 with reference to the method described in Japanese Patent Application No. 8-192465.

In the early stage of knitting of the knitted article, the half dial 6
Is moved by the action of the stepping motor 50 from the inoperative position shown in FIG. 10 to the needle operating position shown in FIG. 11, where the needle cylinder has its own axis 2a.
Swing n around.

During these n swings, the extraction cam 30 is moved to the operating position, and the hook 26 projects from the half dial 6 so that the first half of the needle cylinder 2 passing in front of the feed or drop of the knitting machine. Place the tip of each hook between two adjacent needles on the body and pick up the thread dispensed in the feed or drop.

The thread dispensed is picked up by the needle 4 and remains on the tip of the hook 26, as described in the above-mentioned patent application, which is hereby incorporated by reference.

During n swings, 1 / n needles are raised to the operating position, and as described in the aforementioned Japanese Patent Application, the needle set raised to the operating position at each swing is varied.

During these n swings, the extraction cam 30
Is in a non-operating state, and the retreat cam 31 (FIG. 12) is in an operating state.

The n initial swing can be limited to a single swing. That is, the axis 2 of the needle cylinder 2 itself
It can be limited to a unidirectional ejection movement in one direction around a. Immediately after the n swing, which can be limited to a single swing as described above, the heel knitting is started. That is, half dial 6
After the hook 26 has been partially or completely retracted into the knitting, the knitting is performed by pile knitting using a sinker 70 suitably arranged.

By using the plurality of retraction cams 31 for adjusting the retraction of the hook 26, the first knitting row placed on the hook 26 is not excessively stressed.

Next, when the hook 26 is retracted into the half dial 6 so as to strongly hold the loop portion of the first row placed on the half dial 6, the half dial 6 moves downward along the axis 2a. The needle cylinder 2 is alternately moved about its axis 2a to complete the heel knitting, and thus the knitting of the knitted article as shown in FIG. The tip portion 80 is knitted.

During this phase, the part 11 of the support part 8 can optionally be disengaged from the part 12 to minimize wear between the part of the half dial 6 and the part 11.

The half dial 6 is turned around the diametrical axis 7 by operating the step motor 37, and the half dial 6 is opposed to the needle of the other half dial of the needle cylinder 2 (FIG. 14).

After the reversing action, the extraction cam 30 and one or more retraction cams 31 are sequentially operated to transfer the loop portion held by the hook 26 to the other half needle 4 of the needle cylinder 2. The outer periphery of the knitted article portion 80 is engaged by both halves of the needle cylinder 2 (FIGS. 15 and 16).

At this time, by operating the step motor 50 again, the half dial 6 is lowered into the needle cylinder 2, and the knitting of the knitted article is continued in a known manner.

When transferring the knitting loop from the hook of the half dial 6 to the needle of the other half of the needle cylinder 2, the half dial covers 180 ° or less around the axis 2a as described in the co-pending application. If so, it should be understood that a hook can be used to complete the passage of the row portion arranged adjacent to the half dial 6 side.

In practice, the knitted article obtained at the end of the knitting process is closed at its front or longitudinal end.

The operation of the device for transferring or transferring the loop from one half needle of the needle cylinder to the other half needle is mainly described in Japanese Patent Application No. 8-1924.
Although described with respect to performing the method according to No. 65, the device can be used to perform other conventional knitting steps, such as the method described in Italian Patent No. 675,845.

[0069]

A knitting machine using the device according to the invention eliminates the possibility of knitting a closed knit or generally tubular knitted article at the leading end or longitudinal end of the knitted article adjacent to its closed end. It was confirmed that the intended purpose could be completely achieved because the product could be manufactured without any additional work.

The present invention is not limited to the above description, but can be arbitrarily modified within the scope of the invention.

[Brief description of the drawings]

FIG. 1 is a schematic axial sectional view of a knitting machine according to the present invention.

2 is an axial sectional view of a part of the knitting machine taken along a plane different from that of FIG. 1;

FIG. 3 is an enlarged sectional view of a detail of FIG. 1;

FIG. 4 is a plan view showing a partial cross section of a half dial and a supporting component on which the half dial is mounted.

FIG. 5 is a schematic sectional view taken along the line VV of FIG. 2;

FIG. 6 is a schematic sectional view taken along the line VI-VI of FIG. 2;

FIG. 7 is a schematic sectional view taken along the line VII-VII in FIG. 2;

FIG. 8 is a schematic sectional view taken along the line VIII-VIII in FIG. 2;

FIG. 9 is an axial sectional view of a knitting machine part related to an actuating means for inverting a half dial;

FIG. 10 is a first schematic diagram showing an operation sequence of a knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

FIG. 11 is a second schematic diagram showing an operation sequence of the knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

FIG. 12 is a third schematic diagram showing an operation sequence of the knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

FIG. 13 is a fourth schematic view showing an operation sequence of the knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

FIG. 14 is a fifth schematic view showing an operation sequence of the knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

FIG. 15 is a sixth schematic diagram showing the operation sequence of the knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

FIG. 16 is a seventh schematic view showing an operation sequence of the knitting machine when performing a method of manufacturing a knitted product having a closed longitudinal end.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Knitting machine 2 Needle cylinder 2a Needle cylinder axis 3 Slot 4 Needle 5 Loop transfer device 6 Half dial 7 Diameter axis 8 Supporting parts 9 Outer cylinder 11 Inner cylinder part 12 Inner cylinder part 23 Orthogonal to the diameter axis Diameter surface 26 Hook 26a Upper heel 26b Lower heel 30 Extraction cam 31 Retraction cam 34 Depression 35 Half-dial recess 36 Suction hose 37 Step motor 50 Step motor 53 Knitting machine support structure

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Ettore, Brescia, Via, Balsolda, Ronati Italy, 32 (72) Inventor Faust, Brescia, Via Nadia, Via, Mediana, 12

Claims (13)

[Claims] 1. A loop formed by at least one needle cylinder which can be rotated about its own axis and one half needle of said needle cylinder is transferred to a needle of the other half of said needle cylinder. A conveying device, said device comprising a half-dial, said half-dial having pick-up means for picking up a thread or loop, said pick-up means for picking up said thread or loop and holding said half or release. Can be moved radially with respect to the dial, the half dial facing, by the pick-up means, the needle of one half of the needle cylinder or the needle of the other half of the needle cylinder Therefore, the needle cylinder can be inverted around the diametrical axis, A circular knitting machine comprising a device for transferring or conveying a knitting loop formed by the needles of one half of a needle cylinder to the needles of the other half of the needle cylinder, wherein the half dial has the at least one needle. A circular knitting machine characterized by being housed inside a cylinder. 2. The circular knitting machine according to claim 1, wherein the half dial is firmly connected to the needle cylinder in rotation about its own axis. 3. The half-dial is mounted on a support component,
The circular knitting machine according to claim 1, wherein the support component is housed inside the at least one needle cylinder, and can be commanded to move along the axis of the needle cylinder. 4. A circular knitting machine according to claim 1, wherein said half dial and said supporting part have a recess around the axis of said needle cylinder for passing a knitted product. . 5. The area of said half-dial occupied by said pick-up means has a symmetrical shape around the axis of said needle cylinder with respect to a diametral plane perpendicular to said diametrical axis and 180 °. The circular knitting machine according to any one of claims 1 to 4, wherein the circular knitting machine has the following angle width. 6. The pick-up means has a hook slidably received in a radial slot formed in the half dial, the hook having a heel, the heel being
When the half dial is in one of two possible positions caused by inversion in either direction about the diametric axis, it projects upwardly and downwardly from the slot and is disposed on the support component. The circular knitting machine according to any one of claims 1 to 5, wherein the circular knitting machine engages with a hook operation cam. 7. The circular knitting machine according to claim 1, wherein the hook operation cam is set to an operation state or a non-operation state by a command. 8. The support component has an outer cylinder, which is coaxially disposed inside the needle cylinder, which rotates with the needle cylinder about its axis, and which is aligned with the axis. 8. The outer cylinder of claim 1, wherein the outer cylinder supports the half dial such that the half dial can swing about the diametric axis. Circular knitting machine described in Crab. 9. The support component has an inner cylinder coaxially disposed inside the outer cylinder, the inner cylinder being adapted to engage the hook actuation on its flat surface facing the half dial. A cam, and wherein the inner cylinder can be rigidly connected to the support structure of the knitting machine to maintain a stationary state during rotation of the needle cylinder about its own axis. A circular knitting machine according to any one of claims 1 to 8. 10. The inner cylinder is divided into two parts, a first part and a second part, said first part comprising:
The rotation of the needle cylinder about the axis is prevented, the second portion supports the operating cam, and the first part is rotated with respect to the rotation of the needle cylinder about the axis.
Circular knitting machine according to any of the preceding claims, characterized in that it can be connected by command to a part or the outer cylinder. 11. A circular knitting machine according to claim 1, wherein said support part is connected to a duct for sucking a knitted article arranged inside said needle cylinder. Machine. 12. The circular knitting machine according to claim 1, further comprising a step motor for moving said support component along an axis of said needle cylinder. 13. A circular knitting machine according to claim 1, further comprising a step motor for reversing said half dial about said diametric axis.