WO2022069235A1 - Method for closing a knitted tubular article at an axial end thereof - Google Patents

Method for closing a knitted tubular article at an axial end thereof Download PDF

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Publication number
WO2022069235A1
WO2022069235A1 PCT/EP2021/075420 EP2021075420W WO2022069235A1 WO 2022069235 A1 WO2022069235 A1 WO 2022069235A1 EP 2021075420 W EP2021075420 W EP 2021075420W WO 2022069235 A1 WO2022069235 A1 WO 2022069235A1
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WO
WIPO (PCT)
Prior art keywords
command
knitting
actuation
manufacture
machine
Prior art date
Application number
PCT/EP2021/075420
Other languages
French (fr)
Inventor
Ettore Lonati
Fausto Lonati
Francesco Lonati
Original Assignee
Lonati S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lonati S.P.A. filed Critical Lonati S.P.A.
Priority to KR1020237003396A priority Critical patent/KR20230074466A/en
Priority to BR112022026939A priority patent/BR112022026939A2/en
Priority to JP2023509429A priority patent/JP2023542610A/en
Priority to EP21778020.4A priority patent/EP4222300A1/en
Priority to MX2023000493A priority patent/MX2023000493A/en
Priority to CN202180030108.3A priority patent/CN115461504A/en
Priority to US18/015,665 priority patent/US20240011203A1/en
Publication of WO2022069235A1 publication Critical patent/WO2022069235A1/en
Priority to ZA2022/10173A priority patent/ZA202210173B/en
Priority to CONC2022/0014337A priority patent/CO2022014337A2/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/40—Circular knitting machines with independently-movable needles with provision for transfer of knitted goods from one machine to another
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/02—Loop-transfer points
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/26—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel stockings
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles

Definitions

  • the present invention relates to a method for closing a knitted tubular manufacture at an axial end thereof, at the end of its production cycle on a circular hosiery knitting machine or the like.
  • knitted tubular manufactures such as for example hosiery items
  • hosiery items are generally produced by means of circular hosiery knitting machines and are unloaded from the machine with both their axial ends open.
  • the various techniques proposed so far can be divided into two main categories: a first category which comprises the techniques based on the execution of the closure directly on the machine that produces the manufacture, at the beginning or at the end of its production, and a second category which comprises the techniques based on the execution of the closure in a sewing or linking station provided for this purpose, which is spaced from the machine for producing the manufacture.
  • the first category has the drawback of limiting significantly the productivity of the machines, since the closing operation requires a certain amount of time during which the machine cannot produce a new manufacture.
  • the second category to which for example the technique described in patent IT 1,300, 622 belongs, can at least partially obviate this problem since the productive potential of the machines is penalized only in terms of the time required to remove the manufacture from the machine that produced it, after which the machine can start producing a new manufacture while the previous manufacture undergoes sewing or linking.
  • the aim of the present invention is to provide a method for performing the closure of a tubular knitted manufacture that is capable of improving the background art in one or more of the above mentioned aspects.
  • an object of the invention is to provide a method for closing a knitted tubular manufacture which allows to increase significantly the productivity of the method and of the apparatus.
  • Another object of the invention is to provide a method for closing a knitted tubular manufacture that is capable of reducing the cycle time while maintaining the transfer operations extremely precise.
  • Another object of the invention is to provide a method for closing a knitted tubular manufacture that is highly reliable, relatively easy to provide and at competitive costs.
  • Figure 1 is a front view of a circular hosiery knitting machine or the like
  • Figure 2 is a front view of a portion of the circular machine of Figure 1 during the initial step of production of the manufacture
  • Figure 3 is a top view of a portion of the circular machine of Figure 1 in a step that is intermediate between the initial step of production of the manufacture and the step of individual gripping of the loops of knitting by virtue of pickup elements;
  • Figure 4 is a front view of the machine portion of Figure 3;
  • Figure 5 is a front view of a portion of the circular machine of Figure 1 during the step of individual gripping of the loops of knitting by virtue of pickup elements;
  • Figure 6 is a front view of a portion of the circular machine of Figure 1 during the step of removal of the manufacture from the machine;
  • Figure 7 is a view of the machine in the condition of Figure 6 from a different and partially sectional viewpoint
  • Figure 8 is a top view of a portion of the circular machine of Figure 1 during a step of positioning the manufacture at a sewing or linking station 102;
  • Figure 9 is a front view of the machine portion of Figure 8.
  • the method for closing a knitted tubular manufacture at an axial end thereof, at the end of its production cycle on a circular hosiery knitting machine 100 or the like comprises:
  • step of disengagement of the manufacture from the handling device comprising a first extraction preparation step, a second manufacture extraction step, and a third manufacture transfer step.
  • the machine 100 has a yarn guiding plate that can be lifted and lowered, a cylinder 101, a step motor for the movement on command of an internal tube in order to bring the knitting to the working position, a cylinder locking piston, a knitting pusher piston, a pickup arm 43 with corresponding piston, a yam guiding plate, an internal knitting lifting tube, an inverting piston, a dial.
  • the commands comprising
  • the commands comprising - the command for the actuation of the pickup piston in the working condition
  • the machine furthermore has a knitting pusher of the cylinder, a step motor and an electric throttling valve associated with a suction apparatus, a step motor for the movement of the sinkers, a step motor associated with the internal knitting lifting tube.
  • the second step of extraction of the manufacture comprises the following commands:
  • the machine furthermore has a piston associated with a lower inverting unit, a sensor for transferring the manufacture, a step motor and an electric throttling valve of the sewing machine, and a blower device for the extraction of the tubular manufacture.
  • the third step of transfer of the manufacture comprises the following commands: - a command for waiting for the end of the leveling of the needles;
  • the invention achieves the intended aim and objects, providing a method capable of increasing significantly the productivity of the machine.
  • the materials used may be any according to the requirements and the state of the art.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)
  • Knitting Of Fabric (AREA)

Abstract

A method for closing a knitted tubular article at an axial end thereof, at the end of its production cycle on a circular hosiery knitting machine, comprising: - production of the article up to the execution of the last course of knitting, retaining the loops of knitting of said last course of knitting in the head of the needles of the machine that formed them; - individual gripping of the loops by a pickup device provided with pickup elements arranged against the region of the stem of each needle located proximate to the latch on the opposite side with respect to the head; - removal of the article, retaining each loop of the last course formed by means of the pickup elements; - positioning the article at a sewing station; - individual transition of the loops from pickup elements to spikes of an annular device composed of two semiannular portions; - inverting the article retained by said handling device; - superimposing each one of the loops of one half course of knitting on a corresponding loop of the other half course of said last course of knitting on a same spike of said handling device by means of the overturning; - sewing the pairs of loops of knitting that are mutually superimposed; - disengagement of the manufacture from said handling device, said step of removal of the manufacture comprising a first extraction preparation step, a second manufacture extraction step, and a third manufacture transfer step. A particular order of commands of the different steps is provided.

Description

METHOD FOR CLOSING A KNITTED TUBULAR ARTICLE
AT AN AXIAL END THEREOF
The present invention relates to a method for closing a knitted tubular manufacture at an axial end thereof, at the end of its production cycle on a circular hosiery knitting machine or the like.
As is known, knitted tubular manufactures, such as for example hosiery items, are generally produced by means of circular hosiery knitting machines and are unloaded from the machine with both their axial ends open.
In the case of hosiery items, after being unloaded from the machine that has made them, it is necessary to close the toe, an operation that is performed by means of sewing or linking machines.
Since this operation requires the use of additional machines and labor, which affects in a significant manner the total production costs of the hosiery items, various techniques have been proposed in order to automate the closure of the toe of hosiery items or, more generally, the closure of an axial end of tubular knitted manufactures produced with circular hosiery knitting machines or the like.
The various techniques proposed so far can be divided into two main categories: a first category which comprises the techniques based on the execution of the closure directly on the machine that produces the manufacture, at the beginning or at the end of its production, and a second category which comprises the techniques based on the execution of the closure in a sewing or linking station provided for this purpose, which is spaced from the machine for producing the manufacture.
The first category has the drawback of limiting significantly the productivity of the machines, since the closing operation requires a certain amount of time during which the machine cannot produce a new manufacture.
The second category, to which for example the technique described in patent IT 1,300, 622 belongs, can at least partially obviate this problem since the productive potential of the machines is penalized only in terms of the time required to remove the manufacture from the machine that produced it, after which the machine can start producing a new manufacture while the previous manufacture undergoes sewing or linking.
On the other hand, the operations for transferring the manufacture from the production machine to the linking station often require the use of complex apparatuses which must ensure extremely precise operation.
In the use of these apparatuses, it has been found that the pickup of the manufacture from the needles of the machine that have produced it, is particularly critical, since it affects in a significant manner the total transfer time of the manufacture and since it is not always capable of ensuring the required precision.
From EP2250305 in the name of the same Applicant it is known a method for performing the closure of a tubular knitted manufacture at one of its axial ends, at the end of its production cycle on a circular hosiery knitting machine or the like, which comprises an initial step of production of the manufacture up to the execution of the last course of knitting, at the axial end of the manufacture that is opposite with respect to the axial end at which knitting began, retaining the loops of knitting of said last course of knitting in the head of the needles of the machine that formed them.
The aim of the present invention is to provide a method for performing the closure of a tubular knitted manufacture that is capable of improving the background art in one or more of the above mentioned aspects.
Within this aim, an object of the invention is to provide a method for closing a knitted tubular manufacture which allows to increase significantly the productivity of the method and of the apparatus.
Another object of the invention is to provide a method for closing a knitted tubular manufacture that is capable of reducing the cycle time while maintaining the transfer operations extremely precise.
Another object of the invention is to provide a method for closing a knitted tubular manufacture that is highly reliable, relatively easy to provide and at competitive costs.
This aim and these and other objects which will become better apparent hereinafter are achieved by a method for closing a knitted tubular manufacture according to claim 1 , optionally provided with one or more of the characteristics of the dependent claims.
Further characteristics and advantages of the invention will become better apparent from the description of a preferred but not exclusive embodiment of the method for closing a knitted tubular manufacture according to the invention, illustrated by way of non-limiting example in the accompanying drawings, wherein:
Figure 1 is a front view of a circular hosiery knitting machine or the like;
Figure 2 is a front view of a portion of the circular machine of Figure 1 during the initial step of production of the manufacture;
Figure 3 is a top view of a portion of the circular machine of Figure 1 in a step that is intermediate between the initial step of production of the manufacture and the step of individual gripping of the loops of knitting by virtue of pickup elements;
Figure 4 is a front view of the machine portion of Figure 3;
Figure 5 is a front view of a portion of the circular machine of Figure 1 during the step of individual gripping of the loops of knitting by virtue of pickup elements;
Figure 6 is a front view of a portion of the circular machine of Figure 1 during the step of removal of the manufacture from the machine;
Figure 7 is a view of the machine in the condition of Figure 6 from a different and partially sectional viewpoint;
Figure 8 is a top view of a portion of the circular machine of Figure 1 during a step of positioning the manufacture at a sewing or linking station 102;
Figure 9 is a front view of the machine portion of Figure 8.
With reference to the figures, the method for closing a knitted tubular manufacture at an axial end thereof, at the end of its production cycle on a circular hosiery knitting machine 100 or the like, according to the present invention, comprises:
- an initial step of production of the manufacture up to the execution of the last course of knitting, at the axial end of the manufacture that is opposite with respect to the axial end at which knitting began, retaining the loops of knitting of the last course of knitting in the head 123c of the needles 123 of the machine 100 that formed them;
- a step of individual gripping of the loops of knitting by virtue of pickup elements 29 arranged against the region of the stem 123b of each needle 123 located proximate to the latch 123d on the opposite side with respect to the head 123c;
- a step of removal of the manufacture from the machine 100 that produced it, retaining each loop of knitting of the last course of knitting formed by means of said pickup elements 29;
- a step of positioning the manufacture at a sewing or linking station 102;
- a step of individual transition of the loops of knitting from the pickup elements 29 to spikes of an annular handling device which is composed of two semiannular portions, one of which can be turned over with respect to the other about a diametrical axis;
- a step of inverting the manufacture retained by the handling device;
- a step of superimposing each one of the loops of knitting of one half course of knitting on a corresponding loop of knitting of the other half course of the last course of knitting on a same spike of the handling device by means of the overturning, through an arc of substantially 180° about the diametrical axis, of one of the two semiannular portions of the handling device with respect to the other semiannular portion;
- a step of sewing or linking the pairs of loops of knitting that are mutually superimposed;
- a step of disengagement of the manufacture from the handling device, the step of removal of the manufacture comprising a first extraction preparation step, a second manufacture extraction step, and a third manufacture transfer step.
The machine 100 has a yarn guiding plate that can be lifted and lowered, a cylinder 101, a step motor for the movement on command of an internal tube in order to bring the knitting to the working position, a cylinder locking piston, a knitting pusher piston, a pickup arm 43 with corresponding piston, a yam guiding plate, an internal knitting lifting tube, an inverting piston, a dial.
The method is characterized in that the first extraction preparation step comprises the following commands:
- an extraction start command;
- a command for stopping the machine;
- a command for lifting the yam guiding plate;
- a command for restarting the machine;
- a command for waiting for the positioning of the cylinder 101 of the machine 1;
- a command for the actuation of the step motor of the internal tube in order to bring the knitting to the working position;
- a command for setting that positioning has occurred;
- a command for the actuation of the cylinder locking piston in the working condition;
- a command for the actuation of the knitting pusher piston of the cylinder in the working condition; - a command for the actuation of the piston of the pickup arm in the working condition;
- a command for moving the pickup arm 43 to an intermediate condition;
- a command for moving the pickup arm 43 to the height for entry in the machine;
- a command for waiting for the yarn guiding plate to be in the extraction position;
- a command for the angular movement of the pickup arm 43 for entry in the machine;
- a command for the vertical movement of the pickup arm 43 for the release of the knitting pusher of the cylinder;
- a command for the vertical movement of the pickup arm 43 in an intermediate position;
- a command for the pickup piston in the inactive condition if the cylinder locking piston is in the working condition;
- a wait command;
- a command for the vertical movement of the pickup arm 43 to the pickup height.
The commands comprising
- the command for stopping the machine;
- the command for restarting the machine;
- the command for waiting for the positioning of the cylinder;
- the command for the actuation of the step motor of the internal knitting lifting tube in the working position;
- the command for setting that positioning has occurred;
- the command of the cylinder locking piston in the working condition being performed substantially simultaneously.
Conveniently, the commands comprising - the command for the actuation of the pickup piston in the working condition;
- the command for moving the pickup arm 43 to an intermediate condition;
- the command for moving the pickup arm 43 to the height for entry in the machine; are performed substantially simultaneously.
Conveniently,
- the command for the angular movement of the pickup arm 43 for entry in the machine;
- the command for the vertical movement of the pickup arm 43 for the release of the knitting pusher of the cylinder;
- the command for the vertical movement of the pickup arm 43 in an intermediate position; are performed after the yarn guiding plate lifting command has brought the yarn guiding plate to a preset height.
The machine furthermore has a knitting pusher of the cylinder, a step motor and an electric throttling valve associated with a suction apparatus, a step motor for the movement of the sinkers, a step motor associated with the internal knitting lifting tube.
The second step of extraction of the manufacture comprises the following commands:
- a command for the actuation of the step motor of the internal knitting lifting tube in the inactive condition;
- a command for the actuation of the step motor to a working height for picking up the manufacture;
- a command for the knitting pusher of the cylinder in the working position;
- a wait command;
- a command for the actuation of the step motor and of the electric throttling valve of the suction apparatus;
- a command for the movement of the pickup arm 43 vertically to an extraction height;
- a command for setting the manufacture on the pickup elements;
- a command for the actuation of the step motor for the movement of the sinkers to a safety height;
- a command for the actuation of the step motor of the internal knitting lifting tube in the working condition;
- a command for the actuation of the cylinder locking piston in the inactive condition;
- a command for the actuation of the machine for leveling the needles from the heel exclusion position to the tuck stitch position.
In particular,
- the command for the actuation of the step motor of the internal knitting lifting tube in the inactive condition; and
- the command for the actuation of the step motor to a working height to pick up the manufacture; are performed substantially simultaneously.
Conveniently,
- the command for the actuation of the step motor of the internal knitting lifting tube in the working condition; and
- the command for the actuation of the cylinder locking piston in the inactive condition; are performed substantially simultaneously.
The machine furthermore has a piston associated with a lower inverting unit, a sensor for transferring the manufacture, a step motor and an electric throttling valve of the sewing machine, and a blower device for the extraction of the tubular manufacture.
The third step of transfer of the manufacture comprises the following commands: - a command for waiting for the end of the leveling of the needles;
- a command for actuating the lower inverting piston;
- a command for lowering the dial in the working condition;
- an actuation command for the angular movement of the pickup arm 43 to bring it to an intermediate position;
- a command for controlling the sensor for the transfer of the tubular manufacture;
- an actuation command for the angular movement of the pickup arm 43 to a predefined height;
- a command for the actuation of the step motor and of the electric throttling valve of the sewing machine from the lower inverting unit in order to bring it to the first throttling height;
- a command for the actuation of the step motor to incline the inverting unit at a preset height;
- a command for the actuation of the step motor and of the electric throttling valve of the intake to zero;
- a command for the actuation of the step motor for tilting the lower inverting unit at a preset height;
- a wait command;
- a command for the actuation of the step motor to incline the lower inverting unit at zero height;
- a command of the blower device to facilitate the extraction of the tubular manufacture;
- a command for the actuation of the step motor and of the electric throttling valve of the sewing machine for the suction of the lower inverting unit to the second throttling height;
- a command of the step motor for the inclination of the inverting unit at zero height;
- a command for the angular actuation of the pickup arm 43 at zero height; - an actuation command for locking the inverting unit 130 in the inactive condition;
- an actuation command for lowering the dial in the inactive condition;
- a wait command.
Advantageously,
- the actuation command for the angular movement of the pickup arm to bring it to an intermediate position;
- the command for controlling the sensor for the transfer of the tubular manufacture; and
- the actuation command for the angular movement of the pickup arm to a predefined height are performed substantially simultaneously.
In particular, the steps that comprise:
- the extraction start command;
- the command for stopping the machine;
- the command for lifting the yarn guiding plate; and the steps that comprise:
- the command for the pickup piston in the working condition;
- the command for moving the pickup arm to an intermediate condition;
- the command for moving the pickup arm to the height for entry in the machine; in relation to the first step of extraction overlap at least partially during execution.
The movements of the machine to prepare the manufacture for extraction are performed simultaneously with the steps described above.
The adoption of the step motors with closed-loop driver has allowed to increase the movement speed of the affected devices.
The adoption of the closed-loop driver on the yarn guiding plate lifting device has allowed furthermore to remove from the hosiery program some idle turns which were necessary to wait for the yarn guiding plate lifting device to go back to the starting conditions. With reference to the third step of transfer of the manufacture, if a video camera or an alternative control sensor is mounted, the restarting of the machine immediately after the passage of the hosiery item is optimized, without waiting for the control step by means of a mechanical sensor.
In practice it has been found that the invention achieves the intended aim and objects, providing a method capable of increasing significantly the productivity of the machine.
The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may furthermore be replaced with other technically equivalent elements.
In practice, the materials used, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to the requirements and the state of the art.
The disclosures in Italian Patent Application No. 102020000023137 from which this application claims priority are incorporated herein by reference.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. A method for closing a knitted tubular manufacture at an axial end thereof, at the end of its production cycle on a circular hosiery knitting machine or the like, comprising:
- an initial step of production of the manufacture up to the execution of the last course of knitting, at the axial end of the manufacture that is opposite with respect to the axial end at which knitting began, retaining the loops of knitting of said last course of knitting in the head of the needles of the machine that formed them;
- a step of individual gripping of the loops of knitting by virtue of pickup elements (29) arranged against the region of the stem of each needle located proximate to the latch on the opposite side with respect to the head;
- a step of removal of the manufacture from the machine (100) that produced it, retaining each loop of knitting of the last course of knitting formed by means of said pickup elements (10);
- a step of positioning the manufacture at a sewing or linking station (102);
- a step of individual transition of the loops of knitting from said pickup elements (29) to spikes of an annular handling device which is composed of two semiannular portions, one of which can be turned over with respect to the other about a diametrical axis;
- a step of inverting the manufacture retained by said handling device;
- a step of superimposing each one of the loops of knitting of one half course of knitting on a corresponding loop of knitting of the other half course of said last course of knitting on a same spike of said handling device by means of the overturning, through an arc of substantially 180° about said diametrical axis, of one of said two semiannular portions of the handling device with respect to the other semiannular portion;
- a step of sewing or linking the pairs of loops of knitting that are mutually superimposed;
- a step of disengagement of the manufacture from said handling device, said step of removal of the manufacture comprising a first extraction preparation step, a second manufacture extraction step, and a third manufacture transfer step, characterized in that said first extraction preparation step comprises the following commands:
- an extraction start command;
- a command for stopping the machine (100);
- a command for lifting the yam guiding plate;
- a command for restarting the machine (100);
- a command for waiting for the positioning of the cylinder;
- a command for the actuation of the step motor of the internal tube in order to bring the knitting to the working position;
- a command for setting that positioning has occurred;
- a command for the actuation of the locking piston of the cylinder (101) in the working condition;
- a command for the actuation of the knitting pusher piston of the cylinder in the working condition;
- a command for the actuation of the pickup piston in the working condition;
- a command for moving the pickup arm to an intermediate condition;
- a command for moving the pickup arm to the height for entry in the machine (100);
- a command for waiting for the yarn guiding plate to be in the extraction position;
- a command for the angular movement of the pickup arm for entry in the machine (100);
- a command for the vertical movement of the pickup arm for the release of the knitting pusher of the cylinder;
- a command for the vertical movement of the pickup arm in an 14 intermediate position;
- a command for the actuation of the pickup piston in the inactive condition if the cylinder locking piston is in the working condition;
- a wait command;
- a command for the vertical movement of the pickup arm to the pickup height, the commands comprising
- said command for stopping the machine (100);
- said command for restarting the machine (100);
- said command for waiting for the positioning of the cylinder;
- said command for the actuation of the step motor of the internal knitting lifting tube in the working position;
- said command for setting that positioning has occurred;
- said command of the cylinder locking piston in the working condition being performed substantially simultaneously.
2. The method according to claim 1, characterized in that the commands that comprise
- a command for the pickup piston in the working condition;
- a command for moving the pickup arm to an intermediate condition;
- a command for moving the pickup arm to the height for entry in the machine (100); are performed substantially simultaneously.
3. The method according to one or more of the preceding claims, characterized in that said:
- a command for the angular movement of the pickup arm for entry in the machine (100);
- a command for the vertical movement of the pickup arm for the release of the knitting pusher of the cylinder;
- a command for the vertical movement of the pickup arm in an 15 intermediate position; are performed after said yarn guiding plate lifting command has brought said yarn guiding plate to a preset height.
4. The method according to one or more of the preceding claims, characterized in that said second step of extraction of the manufacture comprises the following commands:
- a command for the actuation of the step motor of the internal knitting lifting tube in the inactive condition;
- a command for the actuation of the step motor to a working height for picking up the manufacture;
- a command for the knitting pusher of the cylinder in the working position;
- a wait command;
- a command for the actuation of the step motor and of the electric throttling valve of the suction apparatus;
- a command for the movement of the pickup arm vertically to an extraction height;
- a command for setting the manufacture on the pickup elements;
- a command for the actuation of the step motor for the movement of the sinkers to a safety height;
- a command for the actuation of the step motor of the internal knitting lifting tube in the working condition;
- a command for the actuation of the cylinder locking piston in the inactive condition;
- a command for the actuation of the machine (100) for leveling the needles from the heel exclusion position to the tuck stitch position; characterized in that
- said command for the actuation of the step motor of the internal knitting lifting tube in the inactive condition;
- said command for the actuation of the step motor to a working 16 height to pick up the manufacture; are performed substantially simultaneously.
5. The method according to one or more of the preceding claims, characterized in that
- said command for the actuation of the step motor of the internal knitting lifting tube in the working condition; and
- said command for the actuation of the cylinder locking piston in the inactive condition; are performed substantially simultaneously.
6. The method according to one or more of the preceding claims, characterized in that said third step of transfer of the manufacture comprises the following commands:
- a command for waiting for the end of the leveling of the needles;
- a command for actuating the lower inverting piston (130);
- a command for lowering the dial in the working condition;
- an actuation command for the angular movement of the pickup arm to bring it to an intermediate position;
- a command for controlling the sensor for the transfer of the tubular manufacture;
- an actuation command for the angular movement of the pickup arm to a predefined height;
- a command for the actuation of the step motor and of the electric throttling valve of the sewing machine from the lower inverting unit (130) in order to bring it to the first throttling height;
- a command for the actuation of the step motor to incline the inverting unit (130) at a preset height;
- a command for the actuation of the step motor and of the electric throttling valve of the intake to zero;
- a command for the actuation of the step motor for tilting the lower inverting unit (130) at a preset height; 17
- a wait command;
- a command for the actuation of the step motor to incline the lower inverting unit (130) at zero height;
- a command of the blower device to facilitate the extraction of the tubular manufacture;
- a command for the actuation of the step motor and of the electric throttling valve of the sewing machine for the suction of the lower inverting unit (130) to the second throttling height;
- a command of the step motor for the inclination of the inverting unit (130) at zero height;
- a command for the actuation of the angular pickup arm at zero height;
- an actuation command for locking the inverting unit (130) in the inactive condition;
- an actuation command for lowering the dial in the inactive condition;
- a wait command, said actuation command for the angular movement of the pickup arm to bring it to an intermediate position, said command for controlling the sensor for transferring the tubular manufacture and said actuation command for the angular movement of the pickup arm to a predefined height being performed substantially simultaneously.
PCT/EP2021/075420 2020-10-01 2021-09-16 Method for closing a knitted tubular article at an axial end thereof WO2022069235A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
KR1020237003396A KR20230074466A (en) 2020-10-01 2021-09-16 Method for closing knitted tubular products at the axial end
BR112022026939A BR112022026939A2 (en) 2020-10-01 2021-09-16 METHOD FOR CLOSING A KNITTED TUBULAR ARTICLE AT AN AXIAL END OF THE SAME
JP2023509429A JP2023542610A (en) 2020-10-01 2021-09-16 Method for closing knitted tubular products at axial ends
EP21778020.4A EP4222300A1 (en) 2020-10-01 2021-09-16 Method for closing a knitted tubular article at an axial end thereof
MX2023000493A MX2023000493A (en) 2020-10-01 2021-09-16 Method for closing a knitted tubular article at an axial end thereof.
CN202180030108.3A CN115461504A (en) 2020-10-01 2021-09-16 Method for closing a knitted tubular article at an axial end thereof
US18/015,665 US20240011203A1 (en) 2020-10-01 2021-09-16 Method for closing a knitted tubular article at an axial end thereof
ZA2022/10173A ZA202210173B (en) 2020-10-01 2022-09-13 Method for closing a knitted tubular article at an axial end thereof
CONC2022/0014337A CO2022014337A2 (en) 2020-10-01 2022-10-07 Method for closing a knitted tubular product at an axial end thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT202000023137 2020-10-01
IT102020000023137 2020-10-01

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US (1) US20240011203A1 (en)
EP (1) EP4222300A1 (en)
JP (1) JP2023542610A (en)
KR (1) KR20230074466A (en)
CN (1) CN115461504A (en)
BR (1) BR112022026939A2 (en)
CO (1) CO2022014337A2 (en)
MX (1) MX2023000493A (en)
WO (1) WO2022069235A1 (en)
ZA (1) ZA202210173B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2250305A1 (en) 2008-03-10 2010-11-17 Lonati S.P.A. Method and apparatus for closing a tubular knitted article at one of its axial ends, at the end of its production cycle on a circular knitting machine for hosiery or the like

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1259688B (en) * 1992-10-09 1996-03-25 Conti Florentia Srl METHOD AND DEVICE TO CARRY OUT THE COMBINATION OF TWO SIDES OF A TUBULAR KNIT FABRIC MANUFACTURE AT THE END OF ITS TRAINING
ITMI20021384A1 (en) * 2002-06-24 2003-12-22 Lonati Spa CIRCULAR MACHINE FOR KNITWEAR OR DOUBLE CYLINDER FOOTWEAR WITH DEVICE OF COLLECTION AND TRANSFER OF THE MANUFACTURE AT THE END OF WORK
ITFI20020199A1 (en) * 2002-10-21 2004-04-22 Fabritex Srl METHOD AND APPARATUS TO JOIN THE EDGES OF A TUBULAR KNITTED FABRIC MANUFACTURE
ITMI20080399A1 (en) * 2008-03-10 2009-09-11 Lonati Spa REVERSE DEVICE OF TUBULAR KNITTED MANUFACTURED ITEMS, PARTICULARLY FOR SEWING OR REPLACEMENT STATIONS FOR THE AUTOMATED CLOSING OF TUBULAR FACTORIES IN CORRESPONDENCE OF THEIR AXIAL END.
US7882711B2 (en) * 2009-06-19 2011-02-08 Massimo Bianchi Device for closing the toe at the end of tubular hosiery articles
ITMI20111683A1 (en) * 2011-09-19 2013-03-20 Lonati Spa PROCEDURE FOR THE PREPARATION OF A TUBULAR MANUFACTURE OF THE SOCK TYPE OR LIKE THE AUTOMATED COLLECTION AT THE END OF ITS FORMATION ON A CIRCULAR DOUBLE CYLINDER MACHINE WITH AT LEAST A FEEDING OR FALL AND A DOUBLE CIRCULAR MACHINE
ITMI20130296A1 (en) * 2013-02-28 2014-08-29 Lonati Spa PROCEDURE FOR IMPLEMENTING THE AUTOMATED CLOSURE OF AN AXIAL END OF A TUBULAR MANUFACTURE AND ITS EXHAUST UNDER REVERSE AND EQUIPMENT FOR ITS EXECUTION.
TWI509121B (en) * 2013-11-15 2015-11-21 Da Kong Entpr Co Ltd Socks sewing device
ITUB20155479A1 (en) * 2015-11-11 2017-05-11 Lonati Spa PROCEDURE FOR THE PREPARATION OF A TUBULAR MANUFACTURE OF THE SOCK TYPE OR SIMILAR TO THE AUTOMATED COLLECTION AT THE END OF ITS FORMATION ON A CIRCULAR DOUBLE CYLINDER MACHINE WITH AT LEAST A FEEDING OR FALL AND A DOUBLE CYLINDER CIRCULAR MACHINE FOR ITS EXECUTION.
PT3715511T (en) * 2019-03-26 2022-12-07 Staeubli Italia S P A Method and device for reversing a tubular knitted article in a circular knitting machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2250305A1 (en) 2008-03-10 2010-11-17 Lonati S.P.A. Method and apparatus for closing a tubular knitted article at one of its axial ends, at the end of its production cycle on a circular knitting machine for hosiery or the like

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JP2023542610A (en) 2023-10-11
MX2023000493A (en) 2023-02-13
CN115461504A (en) 2022-12-09
US20240011203A1 (en) 2024-01-11
EP4222300A1 (en) 2023-08-09
BR112022026939A2 (en) 2023-04-11
ZA202210173B (en) 2023-06-28
CO2022014337A2 (en) 2022-10-31
KR20230074466A (en) 2023-05-30

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