WO2014126539A2 - Device for reversing socks and method of same - Google Patents

Device for reversing socks and method of same Download PDF

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Publication number
WO2014126539A2
WO2014126539A2 PCT/TR2013/000235 TR2013000235W WO2014126539A2 WO 2014126539 A2 WO2014126539 A2 WO 2014126539A2 TR 2013000235 W TR2013000235 W TR 2013000235W WO 2014126539 A2 WO2014126539 A2 WO 2014126539A2
Authority
WO
WIPO (PCT)
Prior art keywords
sock
guide bar
knitting
clamping means
suction tube
Prior art date
Application number
PCT/TR2013/000235
Other languages
French (fr)
Other versions
WO2014126539A3 (en
Inventor
Mustafa Inli
Soner YUCEEL
Original Assignee
SAHINKOC, Halil Ahmet
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 SAHINKOC, Halil Ahmet filed Critical SAHINKOC, Halil Ahmet
Priority to EP13871304.5A priority Critical patent/EP2917392A2/en
Publication of WO2014126539A2 publication Critical patent/WO2014126539A2/en
Publication of WO2014126539A3 publication Critical patent/WO2014126539A3/en

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Classifications

    • 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
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/92—Take-up or draw-off devices for knitting products pneumatic
    • 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

Definitions

  • the present invention relates to an apparatus and method thereof enabling the socks knitted tubularly to be reversed in the knitting machine for sewing the open end thereof.
  • Socks are generally produced by the knitting yarns provided by the yarn carriers using the needles arranged circularly around a cylinder. This circular position of the needles enables the socks to be produced in tubular form, i.e. with open ends. The open ends of the socks are then closed by being sewn in a machine other than the knitting machine and thus, the socks become ready to be used.
  • the tubular knitting of the socks is completed (i.e. without the ends being closed), it is not desired to transfer them as such for the open ends thereof to be sewn, because it is preferred that the sewn portions remain on the side contacting the skin of the users (inner side) when the socks are put on the feet for aesthetic reasons as well as preventing discomfort resulting from pressure of the shoes. For these reasons, reversing of the tubularly knitted socks before closing the ends thereof is desired.
  • the object of the present invention is to enable the knitted socks to be effectively reversed before the end closing process.
  • the present invention in order to achieve the object thereof, relates to a sock knitting machine comprising a circular needle cylinder; a plurality of knitting needles arranged circularly around the axis of the needle cylinder and forming a hollow circular sock with two open ends by knitting the yarns fed to each needle; yarn cutting means breaking the connection between the yarns with the knitting needles after the knitting is completed; and a suction tube sucking the socks being knitted by means of the air flowing therein for keeping them stretched.
  • the sock knitting machine comprises a sock reversing apparatus comprising a guide bar extending into the interior space of the sock for guiding the movement thereof after the connection thereof with the knitting yarns is broken; clamping means releasably engaging with the guide bar for keeping said guide bar in a certain position and enabling the released sock to advance along the guide bar; and conveying means for bringing an open end of the released sock to a suction mouth of the suction tube.
  • the clamping means comprises a first clamping means capable of radially moving towards and away from the guide bar and a second clamping means comprising longitudinal elements and again capable of moving towards and away from the guide bar, wherein said means are disposed at a distance from one another along the axis of the guide bar.
  • the sock knitting machine comprises driving means moving the suction tube in an axial direction.
  • the sock reversing apparatus comprises a casing provided with suction from two separate sections. Forming a low pressure inside the casing is achieved by means of a first tube and said low pressure provides suction for keeping the knitted sock stretched as well as for advancing the sock into the casing after said sock is released from the machine.
  • the second suction tube provides suction so as to draw the guide bar thereto by means of an intermediate piece. Sock reversing process is carried out by means of the second suction tube.
  • the sock reversing apparatus since the sock, after being knitted, can be separated from the knitting needles by means of the yarn cutting means, the sock reversing apparatus according to the present invention can be integrated into a new sock knitting machine as well as adapted to the sock knitting machines being already used or to be used.
  • the present invention in order to achieve the object thereof, also comprises a method for reversing the sock with two open ends before leaving the sock knitting machine.
  • the present invention relates to a method for reversing the sock in a sock knitting machine comprising a plurality of knitting needles arranged circularly and forming a hollow circular sock with two open ends by knitting the yarns fed to each of said needles; and a suction tube sucking the socks being knitted by means of the air flowing therein for keeping them stretched, comprising the following steps of:
  • Figure 1 illustrates a front view of the sock being knitted together with the sock reversing apparatus.
  • Figure 2 illustrates a front view of the sock entering into the sock reversing apparatus after the sock knitting process is completed.
  • Figure 3 illustrates a front view of the piling up of the sock outside the second clamping means when said sock is disposed in the sock reversing apparatus.
  • Figure 4 illustrates a front view of the second clamping means and opening of the sock being connected thereto.
  • Figure 5 illustrates a front view of the entry of the suction tube through the middle of the sock being opened by the second clamping means.
  • Figure 6 illustrates a view corresponding to the situation where the sock stripper brings the sock to the inlet of the suction tube by moving upwards.
  • Figure 7 illustrates a general perspective view of the sock reversing apparatus.
  • Figure 8 illustrates a view corresponding to the situation where the sock opening second clamping means is closed in the sock reversing apparatus.
  • Figure 9 illustrates a view corresponding to the situation where the sock opening second clamping means is open in the sock reversing apparatus.
  • Figure 10 illustrates a view where the suction tube is at an upper position in the sock reversing apparatus.
  • Figure 1 1 illustrates a view where the stripper (conveying means) (9) is at an upper position in the sock reversing apparatus.
  • Figure 12 illustrates a disassembled view of the pieces of the sock reversing apparatus.
  • Figure 13 illustrates a side view of the sock reversing group together with the sock knitting machine.
  • Figure 14 illustrates a perspective internal view of the sock reversing group.
  • Figure 15 illustrates a disassembled view of the sock reversing group.
  • Figure 16 illustrates a perspective view of the sock reversing group from outside.
  • Figure 17 illustrates a perspective bottom view of the first entry of the sock into the sock reversing group.
  • Figure 18 illustrates a perspective bottom view of the sock gripping manner of the closing stripper arms.
  • Figure 19 illustrates a perspective bottom view of the dressing of the sock onto the sock reversing tube by means of the downward movement of stripper arms.
  • Figure 20 illustrates a perspective bottom view of the complete dressing of the sock onto the sock reversing tube.
  • Figure 21 illustrates a perspective view of the engagement manner of the clamping arms to the guide bar cone by closing.
  • Figure 22 illustrates a perspective view of the upward movement of the clamping group together with the upward movement of the guide bar cone.
  • Figure 23 illustrates a view of the sock entering into the sock reversing tube by means of the upward movement of the stripper group.
  • Figure 24 illustrates a view of the reversal of the sock by completely passing through the sock reversing tube.
  • Figure 25 illustrates a view of the placement of the guide bar cone into the sock reversing tube by means of the downward movement of the clamping arms.
  • Figure 26 illustrates a view of the completion of the sock reversing process by means of the upward movement of the clamping arms by opening as well as the sock being ready to be reversed.
  • 'sock' is used to mean a textile material knitted or being knitted with the end thereof not being closed by sewing.
  • FIG. 1 knitting of the sock (2) is illustrated.
  • the sock (2) is knitted inside a knitting cylinder ( 1 ) having a space where the sock being knitted is placed.
  • the knitting needles used for knitting the sock are circularly arranged about the axis of the knitting cylinder ( 1 ) and extending parallel to the axis of the cylinder (1 ).
  • the yarns required for knitting are supplied to each needle by the respective carriers thereof (not shown in the figure) as known from the art.
  • a guide bar (3) extending coaxially with the axis of the cylinder and forming a part of a sock reversing apparatus to be subsequently described in detail is provided.
  • the guide bar (3) guides the movement of the sock (2) when the sock (2) is released from the knitting needles after the completion of the knitting process.
  • the guide bar (3) remains on the hollow inner portion of the knitted sock (2).
  • the guide bar (3) is in position inside the cylinder ( 1) of the sock knitting machine before starting to knit the sock (2).
  • connection between the sock (2) and the knitting needles is terminated by means of yarn cutting means and then, as shown in Figure 2, the sock advances towards the apparatus for carrying out the reversing process over the guide bar (3). Since the guide bar (3) cannot remain in the air on its own, connection thereof with the machine is required.
  • connection of the guide bar (3) with the sock knitting machine in a fixed manner at a position beyond the knitting cylinder by increasing the length thereof is also not possible. Because in the knitting machines, there is a structure enclosing the upper portion of the cylinder (1 ) and being rotatable together with the cylinder (1 ). Therefore, the position of the guide bar (3) should be kept constant at certain times by means of a releasable clamping means and advancing of the sock (2) along the guide bar (3) should be possible when the clamping is released.
  • a first clamping means (6) and a second clamping means (8) comprising longitudinal elements and being capable of radially moving towards and away from the guide bar (3) are disposed at a distance from one another along the axis of the guide bar.
  • Said first clamping means (6) and second clamping means (8) are preferably disposed inside a sock reversing apparatus casing ( 14).
  • the first clamping means (6) comprises finger or pin like pieces having clamping surfaces being preferably shaped with circular forms so as to firmly hold the guide bar (3) by radially applying pressure thereon.
  • the radial movement of the first clamping means (6) towards the guide bar (3) can be provided by any manner.
  • said movement can be provided by pistons or electromagnetic actuators connected to the first clamping means (6) from one side thereof.
  • the first clamping means (6) is rotatably connected to an upper cover (5) with a hollow center fitted on the axis of the guide bar (3) preferably by means of connection elements such as pins or bolts.
  • a piston can drive the clamping surfaces towards the guide bar (3) by pushing the rear portion thereof.
  • a spring (not shown in the figure) connected to the other end of the first clamping means (6) can bring back said first clamping means (6) to the open position.
  • the guide bar (3) is held by means of the first clamping means (6) being in the clamping position.
  • the clamping elements (6) open for the enabling the sock (2) to advance on the guide bar (3) (clamping ends).
  • the guide bar (3) is held by the second clamping means (8).
  • the second clamping means (8) comprises a form capable of radially moving towards and away from the axis of the guide bar (3) and extending parallel to the axis of the guide bar (3).
  • the second clamping means (8) and first clamping means (6) are spaced apart from each other along the axis of the guide bar (3).
  • the second clamping means (8) In closed position, the second clamping means (8) firmly holds the guide bar (3) by applying pressure thereon in the radial direction.
  • the function of a longitudinal form of the second clamping elements is also, as described later, to enable the sock to be opened radially outwards.
  • the radial movement of the second clamping means (8) towards the guide bar (3) can be achieved in various ways.
  • the second clamping means (8) can be radially driven by pistons or electromagnetic actuators connected thereto.
  • Each of the second clamping means (8) comprises a leg and said legs are supported inside the cavities formed radially on a stripper (9) positioned in the lower portion of the second clamping means (8) to be described below in detail.
  • a lower cover (12) fitted on the axis of the guide bar (3) is disposed in the lower portion of the stripper (9).
  • the upper cover (5) and lower cover (12) are connected to each other by means of a plurality of circularly arranged rods ( 16) extending along the outer diameters thereof.
  • a suction tube (1 1 ) sucking air is disposed in the lower portion of the sock knitting machine. Parameters such as the flow rate, pressure and associated vacuum pump characteristics of the suction tube can be adjusted as known from the art.
  • the sock (2) being released from the needles is sucked into the sock reversing apparatus by means of the air suction.
  • the guide bar (3) is held by the closed second clamping means (8) and at the same time enters into the sock (2).
  • the guide bar clamping means (6) holds the guide bar (3) by engaging thereto.
  • Whether the entire sock (2) downwardly passes the level of the top portion of the second clamping means (8) can be determined in various ways. For example, whether the sock is above the second clamping means (8) can be detected by means of an optical sensor to be disposed on the inner wall of the casing ( 14) so as to correspond to the top portion of the second clamping means (8).
  • a groove (4) extending at least partially is disposed on the outer surface of the guide bar (3) for the guide bar clamping elements (6) as well as the second clamping means (8) to hold the guide bar (3) in a reliable manner.
  • the second clamping means (8) opens in the radial direction as shown in Figure 4 and thereby the sock (2) also opens in the radial direction.
  • the diameter size formed when the second clamping means (8) opens is slightly greater than the outer diameter of the suction tube ( 1 1 ). Indeed, as shown in Figure 5, in the next step, the suction tube ( 1 1 ) is axially moved upwards by means of pistons (7) connected thereto and positioned in the space formed in the middle of the opened second clamping means (8).
  • connection of the pistons (7) with the suction tube ( 1 1) is provided by means of a flange ( 13).
  • the suction tube (1 1 ) is rigidly connected in the middle of this flange ( 13) and the moving arms of the pistons (7) are also connected to the flange ( 13) from the side portion thereof.
  • a circular stripper (9) provided with a space in the middle portion thereof and being movable up and down along the axis of the guide bar (3) by means of the pistons ( 10) is disposed in the lower portion of the second clamping means (8).
  • the sock (2) is pushed upwards on the second clamping means (8), i.e. stripped therefrom, when the stripper pistons ( 10) move the stripper (9) upwards.
  • the stripper (9) comprises stripper (9) protrusions extending inwardly in the radial direction, i.e. into the space disposed in the middle of the stripper (9), wherein said stripper (9) strips the sock (2) by sticking thereto when the pistons ( 10) of the stripper (9) move upwards.
  • the stripper (9) brings the sock (2) to the inlet of the suction tube (1 1 ) and said sock (2) enters therethrough into the suction tube (1 1 ) by the air suction.
  • the stripper (9) goes all the way up, the sock (2) enters into the suction tube ( 1 1) as reversed.
  • the sock (2) entered into the suction tube (1 1) is reversed before leaving the sock knitting machine.
  • the sock is then removed from the machine by means of an apparatus (not shown in the figure).
  • the stripper (9) and suction tube (1 1) is lowered down and the second clamping means (8) are brought to the closed position.
  • the second clamping means (8) engages the guide bar (3) and then, the guide bar clamping means (6) are opened, taking the position required for reversing the next sock by being turned inside out.
  • the sock reversing apparatus casing ( 14) disposed below the knitting cylinder (1 ) comprises two openings connected with the two separate suction tubes (30, 42).
  • the casing ( 14) is connected with the sock knitting machine by means of a suction tube (1 1 ) of said sock knitting machine, thus, the casing ( 14) further comprises an opening for the suction tube ( 1 1) of the sock knitting machine.
  • the casing ( 14) is designed so as to be air-tight.
  • a suction tube opening (43) of the sock knitting machine is disposed in the upper portion of the casing ( 14), the second suction tube (30) opening is disposed on a lateral wall of the casing and same first suction tube (42) opening is disposed in the lower portion of the casing ( 14).
  • the casing ( 14) preferably has a prismatic shape formed by upper (33), lower (34) and lateral (35) portions.
  • the guide bar (3) extends into the knitting cylinder (1 ) on the upper portion thereof while extending into the interior of the casing (14) by passing through a suction tube opening (43) of the sock knitting machine on the lower portion thereof.
  • a cone element ( 18) is disposed on the lower end of the guide bar (3). Said cone element (18) comprises a taper tapering towards the knitting cylinder (1).
  • the lower portion of the cone element (18) is circular and said circular portion is sized so as to perfectly fit to the upper end of a sock reversing tube (19) connected in an air-tight manner to the first suction tube (42) and extending into the interior of the casing.
  • the sock reversing tube (19) can be integral with the first suction tube (42).
  • the sock (2) When knitting is completed, the sock (2) is freed from the knitting machine by means of the yarn cutters and sucked into the casing ( 14) under the guidance of the guide bar (3), because, the second suction tube (30) continues to suck the air inside the casing ( 14).
  • the sock (2) without encountering any obstacles enters into the casing (14) through the suction tube opening (43) of the sock knitting machine. As shown in Figure 17, it sits on the guide bar cone element ( 18).
  • Stripper arms (25) connected with a frame (36) capable of moving in the direction of the guide bar axis as indicated by the number (37) are disposed inside the casing (14).
  • Said stripper arms (25), as the guide bar clamping means (6) described above, are designed so as to be radially opened and closed towards the sock reversing tube (19).
  • the stripper arms (25) are connected to the frame (36) by means of screws (32) from the ends thereof away from the sock reversing tube (19).
  • Protrusions facing each other are formed in the middle of the stripper arms (25). Bearings (26) with axes of rotation extending perpendicularly to these protrusions and disposed so as to be slightly lower than said protrusions are fitted.
  • a stripper opening piston (28) is disposed so as to coincide with the space between the ends of the stripper arms (25) away from the sock reversing tube (19).
  • a cone element (27) is provided so as to face the bearings (26) in the outlet of the stripper opening piston (28).
  • the initially open stripper arms (25) close and engage the sock, then, said sock (2) is put on the sock reversing tube ( 19) upon downward movement of the frame (36) of the stripper group.
  • said movement i.e. opening and upward movement of the stripper arms (25), downward movement of the closing stripper arms (25)
  • said movement is repeated several times. Said movement is repeated until the sock is completely put on the sock reversing tube (19).
  • the sock (2) accumulates on the lower portion of the sock reversing tube (19).
  • the arrival of the sock (2) onto the guide bar cone element ( 18) can be determined in various ways, for example, an optical sensor transmitting light onto the guide bar cone element (18) and disposed inside the casing can be used for this purpose.
  • the movement of the frame (36) of the stripper group in the direction of the guide bar axis is provided by means of a piston or pistons (29).
  • Said pistons (29) are fixed to the lower portion of the frame (36) by passing through the opening formed in the lower portion of the casing ( 14).
  • the suction carried out by the second suction tube (30) can be optionally stopped during the process of putting the sock (2) on the sock reversing tube ( 19), however, in the meantime the suction from the first suction tube (42) is maintained.
  • the guide bar clamping means (6) extends adjacent and radially to the guide bar cone element (18).
  • the apparatus enabling the guide bar clamping means (6) to be opened and closed is similar to the apparatus enabling the stripper arms (25) to be opened and closed.
  • the guide bar clamping means (6) is connected to a frame (20) capable of moving along the guide bar axis inside the casing (J 4).
  • the guide bar clamping means (6) is connected to the frame (20) by means of screws (31 ) from the ends thereof away from the guide bar cone element (18). Protrusions facing each other are formed in the middle of the guide bar clamping means (6). Bearings (21 ) with axes of rotation extending perpendicularly to these protrusions and disposed so as to be slightly lower than said protrusions are fitted. A certain amount of clearance is provided between the bearings (21).
  • a clamping arm opening piston (23) is disposed so as to coincide with the space between the ends of the guide bar clamping means (6) away from the guide bar cone element (18).
  • a cone element (22) is provided so as to face the bearings (21) in the outlet of the clamping arm opening piston (23).
  • the piston (23) pushes the cone element (22) and it enables the stripper arms (6) to be opened by contacting the bearings (21 ).
  • the guide bar clamping means (6) is closed as the cone element (22) moves away from the bearings when the clamping arm opening piston (23) retracts.
  • the guide bar clamping means (6) is closed and it clamps the guide bar cone element (18). Then, the suction provided from the first suction tube (42) is stopped and subsequently, as shown in Figure 22, clamping group frame (20) (thus, the guide bar clamping means (6)) is slightly moved upwards (towards the knitting cylinder). Then, suction from the first suction tube (42) is started. In the meantime, suction is carried out from the second suction tube (30). Then, the stripper arms (25) engaging the sock in the closed position thereof are moved upwards and conveying of the sock (2) over the sock stripping tube ( 19) towards the open upper end thereof is provided.
  • the stripper arms (25) function as conveying means.
  • the open end of the sock (2) is sucked into the tube ( 19) by means of the sock stripping tube ( 19) due to the suction effect.
  • reversing (turning inside out) of the sock is provided.
  • Complete putting of the sock (2) on the sock reversing tube (19) can be determined in various ways, for example, an optical sensor transmitting light onto the sock reversing tube ( 19) and disposed inside the casing can be used for this purpose.
  • the movement of the clamping group frame (20) in the direction of the guide bar axis is provided by means of a piston or pistons (24). Said pistons (24) extend to the lower portion of the frame (20) and are fixed thereto.
  • the sock reversing apparatus For the reversing of the next sock, the sock reversing apparatus returns back to the original position thereof.
  • the guide bar cone element (18) is placed on the upper end of the sock reversing tube (19) by the downward movement of the guide bar clamping means (6) and as shown in Figure 26, the opening stripper arms (25) move upwards.
  • the stripper arms (25) and guide bar clamping means (6) can be movable along the axis of the sock reversing tube when the sock reversing tube (19) is fixed and in the contrary case, the stripper arms (25) and guide bar clamping means (6) can be fixed along the axis of the reversing tube (19).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The present invention relates to an apparatus and method thereof enabling the socks knitted tubularly to be reversed in the knitting machine for sewing the open end thereof.

Description

DEVICE FOR REVERSING SOCKS AND METHOD OF SAME
TECHNICAL FIELD
The present invention relates to an apparatus and method thereof enabling the socks knitted tubularly to be reversed in the knitting machine for sewing the open end thereof. BACKGROUND OF THE INVENTION
Socks are generally produced by the knitting yarns provided by the yarn carriers using the needles arranged circularly around a cylinder. This circular position of the needles enables the socks to be produced in tubular form, i.e. with open ends. The open ends of the socks are then closed by being sewn in a machine other than the knitting machine and thus, the socks become ready to be used. When the tubular knitting of the socks is completed (i.e. without the ends being closed), it is not desired to transfer them as such for the open ends thereof to be sewn, because it is preferred that the sewn portions remain on the side contacting the skin of the users (inner side) when the socks are put on the feet for aesthetic reasons as well as preventing discomfort resulting from pressure of the shoes. For these reasons, reversing of the tubularly knitted socks before closing the ends thereof is desired.
The most primitive practice of reversing of socks is the manual process where the socks are reversed by hand, said process greatly increases the cost of production. It is known that various sock reversing apparatuses to be attached to the sock knitting machines are already used for reducing the cost of production. However, these apparatuses lead to low efficiency and cost increasing results since the reversing process is carried out after the socks leave the knitting machine and reversing of the tubular socks require completion of a previous process (the process of the tubular socks to leave the knitting machine).
DESCRIPTION OF THE INVENTION In order to eliminate the aforementioned disadvantages, the object of the present invention is to enable the knitted socks to be effectively reversed before the end closing process. The present invention, in order to achieve the object thereof, relates to a sock knitting machine comprising a circular needle cylinder; a plurality of knitting needles arranged circularly around the axis of the needle cylinder and forming a hollow circular sock with two open ends by knitting the yarns fed to each needle; yarn cutting means breaking the connection between the yarns with the knitting needles after the knitting is completed; and a suction tube sucking the socks being knitted by means of the air flowing therein for keeping them stretched. The sock knitting machine according to the invention comprises a sock reversing apparatus comprising a guide bar extending into the interior space of the sock for guiding the movement thereof after the connection thereof with the knitting yarns is broken; clamping means releasably engaging with the guide bar for keeping said guide bar in a certain position and enabling the released sock to advance along the guide bar; and conveying means for bringing an open end of the released sock to a suction mouth of the suction tube.
According to an embodiment of the present invention, the clamping means comprises a first clamping means capable of radially moving towards and away from the guide bar and a second clamping means comprising longitudinal elements and again capable of moving towards and away from the guide bar, wherein said means are disposed at a distance from one another along the axis of the guide bar.
According to an embodiment of the present invention, the sock knitting machine comprises driving means moving the suction tube in an axial direction.
According to an embodiment of the present invention, the sock reversing apparatus comprises a casing provided with suction from two separate sections. Forming a low pressure inside the casing is achieved by means of a first tube and said low pressure provides suction for keeping the knitted sock stretched as well as for advancing the sock into the casing after said sock is released from the machine. The second suction tube provides suction so as to draw the guide bar thereto by means of an intermediate piece. Sock reversing process is carried out by means of the second suction tube.
According to an alternative embodiment of the present invention, since the sock, after being knitted, can be separated from the knitting needles by means of the yarn cutting means, the sock reversing apparatus according to the present invention can be integrated into a new sock knitting machine as well as adapted to the sock knitting machines being already used or to be used. The present invention, in order to achieve the object thereof, also comprises a method for reversing the sock with two open ends before leaving the sock knitting machine. Accordingly, the present invention relates to a method for reversing the sock in a sock knitting machine comprising a plurality of knitting needles arranged circularly and forming a hollow circular sock with two open ends by knitting the yarns fed to each of said needles; and a suction tube sucking the socks being knitted by means of the air flowing therein for keeping them stretched, comprising the following steps of:
Releasing the sock after being knitted by breaking the connection of the sock with the knitting needles; guiding the released sock by means of a guide bar while advancing; engaging the guide bar by a releasable clamping means for enabling the released sock to advance along the guide bar; bringi ng an open end of the released sock to a suction mouth of the suction tube; and reversing the sock by being sucked by means of the suction tube.
BRIEF DESCRIPTION OF THE FIGURES
Embodiment of the present invention and advantages thereof with the additional components is to be considered together with the figures explained below in order to be fully understood.
Figure 1 illustrates a front view of the sock being knitted together with the sock reversing apparatus. Figure 2 illustrates a front view of the sock entering into the sock reversing apparatus after the sock knitting process is completed.
Figure 3 illustrates a front view of the piling up of the sock outside the second clamping means when said sock is disposed in the sock reversing apparatus.
Figure 4 illustrates a front view of the second clamping means and opening of the sock being connected thereto.
Figure 5 illustrates a front view of the entry of the suction tube through the middle of the sock being opened by the second clamping means.
Figure 6 illustrates a view corresponding to the situation where the sock stripper brings the sock to the inlet of the suction tube by moving upwards.
Figure 7 illustrates a general perspective view of the sock reversing apparatus.
Figure 8 illustrates a view corresponding to the situation where the sock opening second clamping means is closed in the sock reversing apparatus.
Figure 9 illustrates a view corresponding to the situation where the sock opening second clamping means is open in the sock reversing apparatus.
Figure 10 illustrates a view where the suction tube is at an upper position in the sock reversing apparatus.
Figure 1 1 illustrates a view where the stripper (conveying means) (9) is at an upper position in the sock reversing apparatus.
Figure 12 illustrates a disassembled view of the pieces of the sock reversing apparatus.
Figure 13 illustrates a side view of the sock reversing group together with the sock knitting machine.
Figure 14 illustrates a perspective internal view of the sock reversing group.
Figure 15 illustrates a disassembled view of the sock reversing group. Figure 16 illustrates a perspective view of the sock reversing group from outside. Figure 17 illustrates a perspective bottom view of the first entry of the sock into the sock reversing group.
Figure 18 illustrates a perspective bottom view of the sock gripping manner of the closing stripper arms. Figure 19 illustrates a perspective bottom view of the dressing of the sock onto the sock reversing tube by means of the downward movement of stripper arms.
Figure 20 illustrates a perspective bottom view of the complete dressing of the sock onto the sock reversing tube.
Figure 21 illustrates a perspective view of the engagement manner of the clamping arms to the guide bar cone by closing.
Figure 22 illustrates a perspective view of the upward movement of the clamping group together with the upward movement of the guide bar cone.
Figure 23 illustrates a view of the sock entering into the sock reversing tube by means of the upward movement of the stripper group.
Figure 24 illustrates a view of the reversal of the sock by completely passing through the sock reversing tube.
Figure 25 illustrates a view of the placement of the guide bar cone into the sock reversing tube by means of the downward movement of the clamping arms. Figure 26 illustrates a view of the completion of the sock reversing process by means of the upward movement of the clamping arms by opening as well as the sock being ready to be reversed.
DETAILED DESCRIPTION OF THE INVENTION
Throughout this description, unless otherwise stated, the term 'sock' is used to mean a textile material knitted or being knitted with the end thereof not being closed by sewing.
Reversing steps of the sock by means of the sock reversing apparatus according to the preferred embodiment of the present invention is illustrated in Figures! to 6.
In Figure 1 , knitting of the sock (2) is illustrated. The sock (2) is knitted inside a knitting cylinder ( 1 ) having a space where the sock being knitted is placed. The knitting needles used for knitting the sock are circularly arranged about the axis of the knitting cylinder ( 1 ) and extending parallel to the axis of the cylinder (1 ). The yarns required for knitting are supplied to each needle by the respective carriers thereof (not shown in the figure) as known from the art.
In the hollow inner portion of the knitting cylinder (1 ), a guide bar (3) extending coaxially with the axis of the cylinder and forming a part of a sock reversing apparatus to be subsequently described in detail is provided. The guide bar (3) guides the movement of the sock (2) when the sock (2) is released from the knitting needles after the completion of the knitting process. The guide bar (3) remains on the hollow inner portion of the knitted sock (2). According to the preferred embodiment of the present invention, the guide bar (3) is in position inside the cylinder ( 1) of the sock knitting machine before starting to knit the sock (2).
After the knitting of the sock is completed, the connection between the sock (2) and the knitting needles is terminated by means of yarn cutting means and then, as shown in Figure 2, the sock advances towards the apparatus for carrying out the reversing process over the guide bar (3). Since the guide bar (3) cannot remain in the air on its own, connection thereof with the machine is required.
However, if such connection is performed in a fixed manner at a point between the knitting cylinder (1 ) and the sock reversing apparatus to be described later in detail, release of the sock (2) from the guide bar (3) cannot be possible, because, in this case, the sock (2) would stick to a fixed connection piece. On the other hand, connection of the guide bar (3) with the sock knitting machine in a fixed manner at a position beyond the knitting cylinder by increasing the length thereof is also not possible. Because in the knitting machines, there is a structure enclosing the upper portion of the cylinder (1 ) and being rotatable together with the cylinder (1 ). Therefore, the position of the guide bar (3) should be kept constant at certain times by means of a releasable clamping means and advancing of the sock (2) along the guide bar (3) should be possible when the clamping is released.
To achieve this, according to a preferred embodiment of the present invention, a first clamping means (6) and a second clamping means (8) comprising longitudinal elements and being capable of radially moving towards and away from the guide bar (3) are disposed at a distance from one another along the axis of the guide bar. Said first clamping means (6) and second clamping means (8) are preferably disposed inside a sock reversing apparatus casing ( 14).
The first clamping means (6) comprises finger or pin like pieces having clamping surfaces being preferably shaped with circular forms so as to firmly hold the guide bar (3) by radially applying pressure thereon. The radial movement of the first clamping means (6) towards the guide bar (3) can be provided by any manner. For example, said movement can be provided by pistons or electromagnetic actuators connected to the first clamping means (6) from one side thereof. The first clamping means (6) is rotatably connected to an upper cover (5) with a hollow center fitted on the axis of the guide bar (3) preferably by means of connection elements such as pins or bolts. A piston can drive the clamping surfaces towards the guide bar (3) by pushing the rear portion thereof. When driving of the piston is terminated, a spring (not shown in the figure) connected to the other end of the first clamping means (6) can bring back said first clamping means (6) to the open position. In the case shown in Figure 1 , i.e. before the knitting is completed, the guide bar (3) is held by means of the first clamping means (6) being in the clamping position. When the knitting of the sock is completed, the clamping elements (6) open for the enabling the sock (2) to advance on the guide bar (3) (clamping ends). In this case, the guide bar (3) is held by the second clamping means (8). The second clamping means (8) comprises a form capable of radially moving towards and away from the axis of the guide bar (3) and extending parallel to the axis of the guide bar (3). The second clamping means (8) and first clamping means (6) are spaced apart from each other along the axis of the guide bar (3).
In closed position, the second clamping means (8) firmly holds the guide bar (3) by applying pressure thereon in the radial direction. The function of a longitudinal form of the second clamping elements is also, as described later, to enable the sock to be opened radially outwards. The radial movement of the second clamping means (8) towards the guide bar (3) (i.e. away movement) can be achieved in various ways. For example, the second clamping means (8) can be radially driven by pistons or electromagnetic actuators connected thereto. Each of the second clamping means (8) comprises a leg and said legs are supported inside the cavities formed radially on a stripper (9) positioned in the lower portion of the second clamping means (8) to be described below in detail.
A lower cover (12) fitted on the axis of the guide bar (3) is disposed in the lower portion of the stripper (9). The upper cover (5) and lower cover (12) are connected to each other by means of a plurality of circularly arranged rods ( 16) extending along the outer diameters thereof.
A suction tube (1 1 ) sucking air is disposed in the lower portion of the sock knitting machine. Parameters such as the flow rate, pressure and associated vacuum pump characteristics of the suction tube can be adjusted as known from the art. After the knitting is finished, the sock (2) being released from the needles is sucked into the sock reversing apparatus by means of the air suction. In this case, the guide bar (3) is held by the closed second clamping means (8) and at the same time enters into the sock (2).
Although in the figures given in the annex of the description, the process of sucking the sock with air is shown to be preferably carried out in the lower portion of the machine and thus, the sock knitting is shown to extend downwardly, it should be appreciated that, if desired, the air suction can also be performed from the upper portion. As shown in Figure 3, when the sock (2) is around the second clamping means (8), air is blown downwards in the direction indicated by the arrow (15) towards the axis of the guide bar by means of the nozzles (not shown in the figures) provided in the upper portion of the inner faces of the lateral walls of the apparatus casing (14) for the sock to be piled up on the bottom portion of said second clamping means (8). Thus, the entire sock (2) downwardly passes the level of the top portion of the second clamping means (8). After the downward stripping of the sock (2) by means of the air nozzles, the guide bar clamping means (6) holds the guide bar (3) by engaging thereto. Whether the entire sock (2) downwardly passes the level of the top portion of the second clamping means (8) can be determined in various ways. For example, whether the sock is above the second clamping means (8) can be detected by means of an optical sensor to be disposed on the inner wall of the casing ( 14) so as to correspond to the top portion of the second clamping means (8). A groove (4) extending at least partially is disposed on the outer surface of the guide bar (3) for the guide bar clamping elements (6) as well as the second clamping means (8) to hold the guide bar (3) in a reliable manner.
After the guide bar clamping means (6) hold the guide bar (3), the second clamping means (8) opens in the radial direction as shown in Figure 4 and thereby the sock (2) also opens in the radial direction. The diameter size formed when the second clamping means (8) opens is slightly greater than the outer diameter of the suction tube ( 1 1 ). Indeed, as shown in Figure 5, in the next step, the suction tube ( 1 1 ) is axially moved upwards by means of pistons (7) connected thereto and positioned in the space formed in the middle of the opened second clamping means (8).
The connection of the pistons (7) with the suction tube ( 1 1) is provided by means of a flange ( 13). The suction tube (1 1 ) is rigidly connected in the middle of this flange ( 13) and the moving arms of the pistons (7) are also connected to the flange ( 13) from the side portion thereof.
A circular stripper (9) provided with a space in the middle portion thereof and being movable up and down along the axis of the guide bar (3) by means of the pistons ( 10) is disposed in the lower portion of the second clamping means (8). As shown in Figure 6, in the following step, the sock (2) is pushed upwards on the second clamping means (8), i.e. stripped therefrom, when the stripper pistons ( 10) move the stripper (9) upwards. To provide stripping, the stripper (9) comprises stripper (9) protrusions extending inwardly in the radial direction, i.e. into the space disposed in the middle of the stripper (9), wherein said stripper (9) strips the sock (2) by sticking thereto when the pistons ( 10) of the stripper (9) move upwards.
Meanwhile, since the air suction inside the suction tube (1 1) continues, the open end of the sock (2) (i.e. the upper end thereof) is sucked into the suction tube (1 1). Namely, the stripper (9) brings the sock (2) to the inlet of the suction tube (1 1 ) and said sock (2) enters therethrough into the suction tube (1 1 ) by the air suction. When the stripper (9) goes all the way up, the sock (2) enters into the suction tube ( 1 1) as reversed. After this step, the sock (2) entered into the suction tube (1 1) is reversed before leaving the sock knitting machine. The sock is then removed from the machine by means of an apparatus (not shown in the figure).
After the sock reversing process is completed, the stripper (9) and suction tube (1 1) is lowered down and the second clamping means (8) are brought to the closed position. When closed, the second clamping means (8) engages the guide bar (3) and then, the guide bar clamping means (6) are opened, taking the position required for reversing the next sock by being turned inside out.
Another preferred embodiment of the present invention is shown in Figures 13 to 26. According to said embodiment, the sock reversing apparatus casing ( 14) disposed below the knitting cylinder (1 ) comprises two openings connected with the two separate suction tubes (30, 42). The casing ( 14) is connected with the sock knitting machine by means of a suction tube (1 1 ) of said sock knitting machine, thus, the casing ( 14) further comprises an opening for the suction tube ( 1 1) of the sock knitting machine. The casing ( 14) is designed so as to be air-tight. According to the preferred embodiment of the present invention, a suction tube opening (43) of the sock knitting machine is disposed in the upper portion of the casing ( 14), the second suction tube (30) opening is disposed on a lateral wall of the casing and same first suction tube (42) opening is disposed in the lower portion of the casing ( 14). The casing ( 14) preferably has a prismatic shape formed by upper (33), lower (34) and lateral (35) portions.
In this embodiment of the present invention, although the process of sucking the sock with air is shown to be preferably carried out in the lower portion of the machine and thus, the sock knitting is shown to extend downwardly in the accompanying figures, it should be appreciated that, if desired, the air suction can also be performed from the upper portion.
The guide bar (3) extends into the knitting cylinder (1 ) on the upper portion thereof while extending into the interior of the casing (14) by passing through a suction tube opening (43) of the sock knitting machine on the lower portion thereof. A cone element ( 18) is disposed on the lower end of the guide bar (3). Said cone element (18) comprises a taper tapering towards the knitting cylinder (1). The lower portion of the cone element (18) is circular and said circular portion is sized so as to perfectly fit to the upper end of a sock reversing tube (19) connected in an air-tight manner to the first suction tube (42) and extending into the interior of the casing. The sock reversing tube (19) can be integral with the first suction tube (42).
When the knitting process continues in the knitting machine, air is sucked from the first suction tube, thus, from the sock reversing tube ( 19) by means of a suction pump. Therefore, the guide bar cone element ( 18) sits on the upper end portion of the sock reversing tube ( 19). On the other hand, the second suction tube (30) sucks the air from the casing ( 14) by means of a suction pump. Thus, downward stretching of the sock being knitted in the knitting machine is provided. When knitting is completed, the sock (2) is freed from the knitting machine by means of the yarn cutters and sucked into the casing ( 14) under the guidance of the guide bar (3), because, the second suction tube (30) continues to suck the air inside the casing ( 14).
The sock (2) without encountering any obstacles enters into the casing (14) through the suction tube opening (43) of the sock knitting machine. As shown in Figure 17, it sits on the guide bar cone element ( 18).
Stripper arms (25) connected with a frame (36) capable of moving in the direction of the guide bar axis as indicated by the number (37) are disposed inside the casing (14). Said stripper arms (25), as the guide bar clamping means (6) described above, are designed so as to be radially opened and closed towards the sock reversing tube (19). The stripper arms (25) are connected to the frame (36) by means of screws (32) from the ends thereof away from the sock reversing tube (19). Protrusions facing each other are formed in the middle of the stripper arms (25). Bearings (26) with axes of rotation extending perpendicularly to these protrusions and disposed so as to be slightly lower than said protrusions are fitted. A certain amount of clearance is provided between the bearings (26). A stripper opening piston (28) is disposed so as to coincide with the space between the ends of the stripper arms (25) away from the sock reversing tube (19). A cone element (27) is provided so as to face the bearings (26) in the outlet of the stripper opening piston (28). When opening of the stripper arms (25) is desired, the piston (28) pushes the cone element (27) and it enables the stripper arms (25) to be opened by contacting the bearings (26). The stripper arms (25) are closed as the cone element (27) moves away from the bearings when the stripper opening piston (28) retracts.
After the sock entering into the casing (14) through the suction tube opening (43) of the sock knitting machine sits on the guide bar cone element (18), the initially open stripper arms (25) close and engage the sock, then, said sock (2) is put on the sock reversing tube ( 19) upon downward movement of the frame (36) of the stripper group. When the length of the sock (2) is long, said movement, i.e. opening and upward movement of the stripper arms (25), downward movement of the closing stripper arms (25), is repeated several times. Said movement is repeated until the sock is completely put on the sock reversing tube (19). In the meantime, the sock (2) accumulates on the lower portion of the sock reversing tube (19). The arrival of the sock (2) onto the guide bar cone element ( 18) can be determined in various ways, for example, an optical sensor transmitting light onto the guide bar cone element (18) and disposed inside the casing can be used for this purpose.
The movement of the frame (36) of the stripper group in the direction of the guide bar axis is provided by means of a piston or pistons (29). Said pistons (29) are fixed to the lower portion of the frame (36) by passing through the opening formed in the lower portion of the casing ( 14).
The suction carried out by the second suction tube (30) can be optionally stopped during the process of putting the sock (2) on the sock reversing tube ( 19), however, in the meantime the suction from the first suction tube (42) is maintained. According to this embodiment of the present invention, the guide bar clamping means (6) extends adjacent and radially to the guide bar cone element (18). The apparatus enabling the guide bar clamping means (6) to be opened and closed is similar to the apparatus enabling the stripper arms (25) to be opened and closed.
The guide bar clamping means (6) is connected to a frame (20) capable of moving along the guide bar axis inside the casing (J 4). The guide bar clamping means (6) is connected to the frame (20) by means of screws (31 ) from the ends thereof away from the guide bar cone element (18). Protrusions facing each other are formed in the middle of the guide bar clamping means (6). Bearings (21 ) with axes of rotation extending perpendicularly to these protrusions and disposed so as to be slightly lower than said protrusions are fitted. A certain amount of clearance is provided between the bearings (21).
A clamping arm opening piston (23) is disposed so as to coincide with the space between the ends of the guide bar clamping means (6) away from the guide bar cone element (18). A cone element (22) is provided so as to face the bearings (21) in the outlet of the clamping arm opening piston (23). When opening of the guide bar clamping means (6) is desired, the piston (23) pushes the cone element (22) and it enables the stripper arms (6) to be opened by contacting the bearings (21 ). The guide bar clamping means (6) is closed as the cone element (22) moves away from the bearings when the clamping arm opening piston (23) retracts. After the sock (2) is completely put on the sock reversing tube ( 19), the guide bar clamping means (6) is closed and it clamps the guide bar cone element (18). Then, the suction provided from the first suction tube (42) is stopped and subsequently, as shown in Figure 22, clamping group frame (20) (thus, the guide bar clamping means (6)) is slightly moved upwards (towards the knitting cylinder). Then, suction from the first suction tube (42) is started. In the meantime, suction is carried out from the second suction tube (30). Then, the stripper arms (25) engaging the sock in the closed position thereof are moved upwards and conveying of the sock (2) over the sock stripping tube ( 19) towards the open upper end thereof is provided. From this aspect, the stripper arms (25) function as conveying means. The open end of the sock (2) is sucked into the tube ( 19) by means of the sock stripping tube ( 19) due to the suction effect. Thus, reversing (turning inside out) of the sock is provided. Complete putting of the sock (2) on the sock reversing tube (19) can be determined in various ways, for example, an optical sensor transmitting light onto the sock reversing tube ( 19) and disposed inside the casing can be used for this purpose. The movement of the clamping group frame (20) in the direction of the guide bar axis is provided by means of a piston or pistons (24). Said pistons (24) extend to the lower portion of the frame (20) and are fixed thereto.
For the reversing of the next sock, the sock reversing apparatus returns back to the original position thereof. To achieve this, as shown in Figure 25, the guide bar cone element (18) is placed on the upper end of the sock reversing tube (19) by the downward movement of the guide bar clamping means (6) and as shown in Figure 26, the opening stripper arms (25) move upwards.
According to the aforementioned embodiment of the present invention, the stripper arms (25) and guide bar clamping means (6) can be movable along the axis of the sock reversing tube when the sock reversing tube (19) is fixed and in the contrary case, the stripper arms (25) and guide bar clamping means (6) can be fixed along the axis of the reversing tube (19).

Claims

WO 2014/126539 P CT/T P PCoT/TnR2'0l 1'3,/0/00n2305 0235 CLAIMS
1. A sock knitting machine comprising a circular knitting cylinder (1 ); a plurality of knitting needles ( 1 7) arranged circularly around the axis of said knitting cylinder ( 1 ) and forming a hollow circular sock (2) with two open ends by knitting the yarns fed to each needle; yarn cutting means breaking the connection of the yarns with the knitting needles ( 17) after the knitting is completed; and a suction tube ( 1 1 ) sucking the socks being knitted by means of air flowing therein for keeping the sock (2) stretched, characterized by comprising a sock reversing apparatus comprising a guide bar (3) extending into the interior space of the sock (2) for guiding the movement of the sock (2) after the connection thereof with the knitting yarns is broken;
clamping means (6, 8) releasably engaging with the guide bar (3) for keeping the guide bar (3) in a certain position and enabling the released sock (2) to advance along the guide bar (3); and conveying means (9) for bringing an open end of the released sock (2) to a suction mouth of the suction tube ( 1 1 ).
2. The knitting machine according to claim 1 , characterized in that the clamping means (6, 8) comprises a first clamping means (6) and a second clamping means (8) disposed at a distance from one another along the axis of the guide bar (3) and being capable of radially moving towards and away from thereof for engaging said guide bar (3).
3. The knitting machine according to claim 2, characterized in that the first clamping means (6) comprises clamping elements having clamping surfaces shaped with circular forms so as to firmly hold the guide bar (3) by radially applying pressure thereon.
4. The knitting machine according to claim 2, characterized in that the second clamping means (8) comprises longitudinal elements extending paral lel to the axis of the guide bar (3).
5. The knitting machine according to claim 2, characterized in that the second clamping means
(8) can be radially open outwards by entering into the interior space of the sock (2). WO 2014/126539 P C T/T P PC™T/TR2-0113/00/0n2305 0235
6. The knitting machine according to claim 5, characterized by comprising conveying means (9) for stripping the sock (2) from the second clamping means (8).
7. The knitting machine according to claim 6, characterized by comprising nozzles blowing the sock (2) towards a lower portion of the second clamping means (8) from the top of the second clamping means (8) for the piling up of the sock (2) on the second clamping means (8).
8. The knitting machine according to any one of the preceding claims, characterized by
comprising pistons (7) connected to the suction tube ( 1 1) for providing the axial movement
thereof.
9. The knitting machine according to claim 5, wherein the suction tube ( 1 1) is positioned, after the second clamping means (8) are radially opened outwards, in the space between the second clamping means (8).
10. The knitting machine according to any one of the preceding claims, characterized by comprising pistons ( 10) connected to the conveying means (9) for moving thereof along the axis of the guide bar
(3).
11. The knitting machine according to any one of the preceding claims, wherein the conveying means (9) comprises protrusions extending into the space formed in the conveying means (9) and the protrusions being capable of contacting the sock for conveying said sock.
12. A method for reversing the sock in a sock knitting machine comprising a plurality of knitting needles ( 17) arranged circularly and forming a hollow circular sock (2) with two open ends by knitting the yarns fed to each of said needles; and a suction tube (1 1) sucking the socks being knitted by means of the air flowing therein for keeping the socks (2) stretched, the method comprising the following steps of: releasing the sock (2) after being knitted by breaking the connection of the sock (2) with the knitting needles ( 17); Ρ Ο Τ/Τ Ρ Λ 1 <¾ η Γ» 0235
WO 2014/126539 PCT7TR2013/000235
guiding the released sock (2) by means of a guide bar (3) while advancing; engaging the guide bar (3) by the releasable clamping means (6) for enabling the released sock to advance on said guide bar (3); bringing an open end of the released sock (2) to a suction mouth of the suction tube ( l l); and reversing the sock (2) by being sucked by means of the suction tube ( l l ).
13. A sock reversing apparatus adaptable to a sock knitting machine comprising a circular knitting cylinder ( 1 ); a plurality of knitting needles (17) arranged circularly around the axis of said knitting cylinder ( 1 ) and forming a hollow circular sock (2) with two open ends by knitting the yams fed to each of said needles; yarn cutting means breaking the connection of the yarns with the knitting needles (17) after the knitting process is completed; and a suction tube (1 1) sucking the socks being knitted by means of the air flowing therein for keeping the socks (2) stretched, the sock reversing apparatus characterized by comprising a guide bar (3) extending into the interior space of the sock (2) for guiding the movement of the sock (2) after the connection thereof with the knitting yarns is broken; clamping means (6, 8) releasably engaging with the guide bar (3) for keeping the guide bar (3) in a certain position and enabling the released socks (2) to advance on the guide bar (3); and conveying means (9) for bringing an open end of the released sock (2) to a suction mouth of the suction tube ( 1 1).
14. The apparatus according to claim 13, characterized in that the clamping means (6, 8) comprises a first clamping means (6) and a second clamping means (8) disposed at a distance from one another along the axis of the guide bar (3) and being capable of radially moving towards and away from the guide bar for engaging said guide bar (3).
15. The apparatus according to claim 14, characterized in that the first clamping means (6) comprises clamping elements having clamping surfaces shaped with circular forms so as to firmly hold the guide bar (3) by radially applying pressure thereon.
16. The apparatus according to claim 14, characterized in that the second clamping means (8) comprises longitudinal elements extending parallel to the axis of the guide bar (3). WO 2014/126539 P C T/T P PCT7TnR2"013o/00/0n23500235
17. The apparatus according to claim 14, wherein the second clamping means (8) radially opens outwards by entering into the interior space of the sock (2).
18. The apparatus according to claim 17, characterized by comprising conveying means (9) for stripping the sock (2) from the second clamping means (8).
19. The apparatus according to claim 18, characterized by comprising nozzles blowing the sock towards the lower portion of the second clamping means (8) from the top of the second clamping means (8) for the piling up of the sock (2) on the second clamping means (8).
20. The apparatus according to any one of the claims 13 to 19, characterized by comprising
pistons (7) connected to the suction tube ( 1 1 ) for providing the axial movement thereof.
21. The apparatus according to claim 18, wherein the suction tube ( 1 1 ) is positioned, after the second clamping means (8) are radially opened outwards, in the space between said second clamping means (8).
22. The apparatus according to any one of the claims 13 to 21 , wherein the conveying means (9) comprises pistons ( 10) connected thereto for enabling the movement thereof along the axis of the guide bar (3).
23. The apparatus according to any one of the claims 13 to 22, wherein the conveying means (9) comprises protrusions extending into the space formed in the conveying means (9) and capable of contacting the sock for conveying said sock.
24. A sock reversing apparatus adaptable to a sock knitting machine comprising a circular knitting cylinder ( 1); a plurality of knitting needles ( 17) arranged circularly around the axis of said knitting cylinder ( 1 ) and forming a hollow circular sock (2) with two open ends by knitting the yarns fed to each of said needles; yarn cutting means knitting breaking the contact of the yarns with the knitting needles (17) after the knitting process is completed; and a suction tube (1 1) sucking the socks being knitted by means of the air flowing therein for keeping the socks (2) stretched, the sock reversing WO 2014/126539 P C T /T P PCT7TnR2"013/0/00Λ23°5 0235
apparatus comprising a guide bar (3) extending into the interior space of the sock (2) for guiding the movement of the sock (2) after the connection thereof with the knitting yarns is broken; an air-tight casing ( 14) into which an end of said guide bar (3) can enter; a first suction tube (42) detachably connected to said guide bar (3), having an end disposed inside the casing and capable of sucking air from ihe interior of said casing; a second suction tube (30) connected to the casing so as to suck air from the interior thereof; clamping means (6) releasably engaging with the guide bar (3) for detachment of the guide bar (3) from the first suction tube (42); and conveying means (25) for bringing an open end of the released sock (2) to a suction mouth of the first suction tube (42).
25. The apparatus according to claim 24, characterized by comprising a cone element ( 18) disposed on the lower end of said guide bar (3), tapering towards the knitting cylinder ( 1 ) and having a circular form for connection of the lower part thereof to the first suction tube.
26. The apparatus according to claim 24, characterized by comprising stripper arms (25) connected to a frame (36) being movable along the axis of the guide bar and capable of being radially opened and closed towards the first suction tube (42) so as to hold the sock (2).
27. The apparatus according to claim 26, characterized by comprising at least one piston (29) connected to the frame (36) from the lower portion thereof for providing the movement of said frame (36) along the axis of the guide bar.
28. The apparatus according to claim 24, characterized by comprising a frame (20) connected with the guide bar clamping means (6) and being movable along the axis of the guide bar.
29. The apparatus according to claim 28, characterized by comprising at least one piston (24) connected to the frame (20) from the lower portion thereof for providing the movement of said frame (20) along the axis of the guide bar.
30. The apparatus according to claim 26, wherein the clamping means (6) and conveying means (25) are fixed and the first suction tube (42) is movable along the axis of the guide bar.
31. A sock knitting machine comprising a circular knitting cylinder ( 1 ); a plurality of knitting needles (17) arranged circularly around the axis of said knitting cylinder ( 1 ) and forming a hollow circular sock (2) with two open ends by knitting the yarns fed to each of said needles; yarn cutting means breaking the connection of the yarns with the knitting needles ( 17) after the knitting process is completed; and a suction tube (1 1) sucking the socks being knitted by means of the air flowing therein for keeping the socks (2) stretched, characterized by comprising a sock reversing apparatus comprising a guide bar (3) extending into the interior space of the sock (2) for guiding the movement of the sock (2) after the connection thereof with the knitting yarns is broken; an air-tight casing ( 14) into which an end of said guide bar (3) can enter; a first suction tube (42) detachably connected to said guide bar (3), having an end disposed inside the casing and capable of sucking air from the interior of said casing; a second suction tube (30) connected to said casing so as to suck air from the interior thereof; clamping means (6) releasably engaging with the guide bar (3) for detachment of the guide bar (3) from the first suction tube (42); and conveying means (25) for bringing an open end of the released sock (2) to a suction mouth of the first suction tube (42).
32. The apparatus according to claim 31, characterized by comprising a cone element ( 1 8) disposed on the lower end of said guide bar (3), tapering towards the knitting cylinder (1 ) and having a circular form for connection of the lower part thereof to the first suction tube.
33. The apparatus according to claim 31, characterized by comprising stripper arms (25) connected to a frame (36) being movable along the axis of the guide bar and capable of being radially opened and closed towards the first suction tube (42) so as to hold the sock (2).
34. The apparatus according to claim 33, characterized by comprising at least one piston (29) connected to the frame (36) from the lower portion thereof for providing the movement of said frame (36) along the axis of the guide bar.
35. The apparatus according to claim 31 , characterized by comprising a frame (20) connected with the guide bar clamping means (6) and being movable along the axis of the guide bar. WO 2014/126539 P C T/T PDCT/TnR20"13 °/00 /0A23500235
36. The apparatus according to claim 35, characterized by comprising at least one piston (24) connected to the frame (20) from the lower portion thereof for providing the movement of said frame (20) along the axis of the guide bar.
37. The apparatus according to claim 33, wherein the clamping means (6) and conveying means (25) are fixed and the first suction tube (42) is movable along the axis of the guide bar.
PCT/TR2013/000235 2012-07-16 2013-07-12 Device for reversing socks and method of same WO2014126539A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13871304.5A EP2917392A2 (en) 2012-07-16 2013-07-12 Device for reversing socks and method of same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2012/08289 2012-07-16
TR201208289 2012-07-16

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Cited By (5)

* Cited by examiner, † Cited by third party
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CN104818575A (en) * 2015-04-24 2015-08-05 绍兴市越发机械制造有限公司 Stocks transfer equipment of forming hosiery machine
CN110258029A (en) * 2019-05-29 2019-09-20 诸暨市实干针织机械有限公司 A kind of band turns over the head sewing machine of socks function
EP3613881A1 (en) * 2018-08-20 2020-02-26 Da Kong Enterprise Co., Ltd. Mechanism and the method to reversing the tubular textile
CN113106724A (en) * 2021-04-25 2021-07-13 西安工程大学 Clamping, expanding and sleeving integrated sock turning device
CN113862889A (en) * 2021-11-03 2021-12-31 绍兴绿地针织有限公司 Hosiery knitter convenient to different model socks ejection of compact

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104818575A (en) * 2015-04-24 2015-08-05 绍兴市越发机械制造有限公司 Stocks transfer equipment of forming hosiery machine
EP3613881A1 (en) * 2018-08-20 2020-02-26 Da Kong Enterprise Co., Ltd. Mechanism and the method to reversing the tubular textile
TWI748170B (en) * 2018-08-20 2021-12-01 大康織機股份有限公司 Mechanism to reverse tubular textile material and the method
CN110258029A (en) * 2019-05-29 2019-09-20 诸暨市实干针织机械有限公司 A kind of band turns over the head sewing machine of socks function
CN113106724A (en) * 2021-04-25 2021-07-13 西安工程大学 Clamping, expanding and sleeving integrated sock turning device
CN113106724B (en) * 2021-04-25 2022-08-26 西安工程大学 Clamping, expanding and sleeving integrated sock turning device
CN113862889A (en) * 2021-11-03 2021-12-31 绍兴绿地针织有限公司 Hosiery knitter convenient to different model socks ejection of compact
CN113862889B (en) * 2021-11-03 2022-11-11 绍兴绿地针织有限公司 Hosiery knitter convenient to different model socks ejection of compact

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