EP0473317A2 - Straight bar knitting machines - Google Patents

Straight bar knitting machines Download PDF

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Publication number
EP0473317A2
EP0473317A2 EP91307379A EP91307379A EP0473317A2 EP 0473317 A2 EP0473317 A2 EP 0473317A2 EP 91307379 A EP91307379 A EP 91307379A EP 91307379 A EP91307379 A EP 91307379A EP 0473317 A2 EP0473317 A2 EP 0473317A2
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EP
European Patent Office
Prior art keywords
bar
fabric
rib
piece
rod
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP91307379A
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German (de)
French (fr)
Other versions
EP0473317A3 (en
Inventor
Alec Monk-Cotton Ltd. Corah
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MONK-COTTON Ltd
Original Assignee
MONK-COTTON Ltd
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 MONK-COTTON Ltd filed Critical MONK-COTTON Ltd
Publication of EP0473317A2 publication Critical patent/EP0473317A2/en
Publication of EP0473317A3 publication Critical patent/EP0473317A3/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B11/00—Straight-bar knitting machines with fixed needles
    • D04B11/24—Straight-bar knitting machines with fixed needles with provision for transfer of knitted goods from one machine to another

Definitions

  • the invention relates to mechanism for automatically transferring rib knitted fabric pieces from a running-on bar to the needles of a straight bar knitting machine.
  • Patent Specification GB 1195698 describes means by which rib transfer bars are conveyed to the knitting heads of a straight bar machine. Although not described, the ribs of knitted fabric are actually transferred to the needles by a mechanism whereby the ribs are pre-loaded from a running-on system. The problem is to mechanize this operation.
  • the invention provides mechanism for transferring individual pieces of rib knitted fabric from a running-on bar, which mechanism comprises a rod for engaging the fabric, means for rotating the rod to pull a piece of fabric towards a rib transfer bar of a straight bar knitting machine, gauge-separated elements mounted on an intermediate bar, and means for rotating the intermediate bar to move the elements between the points of the running-on bar and push the fabric piece onto points of a rib transfer bar.
  • the mechanism may be statically mounted on or near the machine, preferably on a carriage, or at a station to feed bars onto a conveyor as in GB 1195698 above.
  • the rod for engaging the fabric is preferably provided with hooks for temporarily securing the rib fabric piece and may comprise a strip of nylon fabric having hooked threads. After pulling the rib towards the rib transfer bar, the rod may be detached by a further pivotal movement, or by an advance and rotational movement.
  • the invention also provides mechanism for transferring individual pieces of rib knitted fabric from a rib transfer bar to the frame needles of a straight bar knitting machine, which mechanism comprises a pair of arms supporting the rib transfer bar, the arms being pivoted with respect to the machine for moving the rib transfer bar between an inoperative position for receiving a piece of rib knitted fabric from a running-on bar and a delivery position where the fabric piece can be moved onto the frame needles.
  • This mechanism can be synchronized to be fed by a mechanism as above from a running-on bar, or may be fed by a push-along conveyor containing a running- on bar with ribs, these ribs being transferred manually onto the rib transfer bars.
  • the mechanism can be part of the fashioning mechanism or a mechanism separate from the fashioning mechanism but having the same motion.
  • All movements can be implemented from a microprocessor or similar programmer from component locations sensed optically or mechanically to synchronize with the pneumatics or power source of the knitting machine.
  • the fabric pieces can be loaded from the running-on bar to the rib transfer bar in its inoperative position while the machine is at a plain or pattern knitting phase of its cycle. Then the lace or marking fingers are raised to an out of action position, and the fashioning fingers are moved laterally out of action beyond the full width of the fashioning bar under central control. This repositioning gives the rib transfer bar a clear path to swing down and locate in the space previously occupied by the lace, marking or fashioning fingers.
  • a piece of rib knitted fabric is delivered from the rib transfer bar to the frame needles at a predetermined time during the re-set sequence by movement of the fashioning mechanism. After delivery, the transfer bar is automatically raised to its inoperative position, ready to receive another rib at some time during the knitting cycle. The lace, marking and fashioning fingers re-assume their operational positions.
  • Each of the mechanisms of the invention may be sold separately as a retrofit for a straight bar knitting machine or as part of a complete machine.
  • FIG. 1 To the left of Figure 1, there are shown standard parts of a knitting head.
  • a frame needle 10 (bearded) is fixed in a needle bar 12.
  • a knockover bar 14 supports a knockover bit 16 above the bar 12.
  • a machine head rail 18 Further to the left is a machine head rail 18 and a strike in jack 20.
  • a sinker 22 To the right of a head of the strike in jack 20 is a sinker 22, and above it a catch bar 24 and a yarn feeder 26.
  • the yarn feeder 26 projects from the usual carriage bars 28.
  • To the right is shown a template rail 30 of the machine.
  • a rib transfer point 32 which is occupied variously by the lace, marking and fashioning fingers, as well as points of a rib transfer bar according to the invention at different stages of operation of the machine.
  • Flat bars 34 are provided for the production of selvedge edge in known manner.
  • a lace finger 36 is shown in a raised or out of action position.
  • a fashioning finger 38 is also shown out of action. This mechanism is supported on a shaft 40, fill up shafts rear 42 and front 44, together with a fill up slide 45 mounted on bow arms 46 for pivoting in known manner to allow the introduction of the fashioning head.
  • a rib transfer arm 50 is shown in two positions pivoted about a shaft 52. There are in fact two such rib transfer arms 50 supporting a rib transfer bar 55 shown in an inoperative position to the right for receiving a piece of knitted rib fabric, but omitted for the sake of clarity in a delivery position of the rib transfer arm 50 where the fabric piece can be moved onto the frame needles 10.
  • FIG. 1 To the right of Figure 1, there are shown a number of pieces 54 of rib knitted fabric on a running on bar 56 clamped in position at 58 on a carriage 60 whereby they may be moved from head to head along rails 62 which are engaged through wheels 64.
  • a rib transfer point 32 is also shown projecting from the rib transfer bar 55, in this position aligned with a point 66 of the running-on bar 56.
  • Above these points is a rod 68 for engaging a leading individual piece 54 of rib knitted fabric.
  • the rod 68 is provided with hooks (not shown) of nylon thread for temporarily securing the rib piece 54.
  • the rod 68 is integral with arms 70 whereby it can be rotated pneumatically about a shaft 72.
  • the rod 68 is rotated anticlockwise to engage the first rib piece 54, and then clockwise to pull the piece 54 towards the rib transfer points 32.
  • a further pivotal movement of the rod 68 detaches the piece 54.
  • Gauge-separated elements 74 mounted on an intermediate or lift shaft 76 are then moved by axial rotation of the intermediate bar 76 between the running- on point 66 and the rod 68.
  • the separate elements are moved against the force of a return spring 78 between stops on the arms of a U-shaped bracket 80 on an advance shaft 82 which itself is retained against axial movement with respect to the carriage 60 by a spring 84 secured to its base.
  • the elements 74 push the rib piece 54 onto the rib transfer bar 55, where it remains until the end of a knitting cycle.
  • the lace, marking and fashioning fingers are moved out of action, and the rib transfer bar 55 is carried by the rib transfer arms 50 in a swinging movement down to a delivery position where the rib piece 54 can be moved onto the frame needles 10 at the start of another knitting cycle.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

Mechanism for transferring individual pieces (54) of rib knitted fabric from a running-on bar (56) comprises a rod (68) for engaging the fabric, means for rotating the rod (68) to pull a piece (54) of fabric towards a rib transfer bar (55) of a straight bar knitting machine, gauge-separated elements (74) mounted on an intermediate bar (76), and means for rotating the intermediate bar (76) to move the elements (74) between points (66) of the running-on bar (56) and push the fabric piece (54) onto points (32) of a rib transfer bar (56). The rod (68) is provided with hooks (not shown) for temporarily securing the fabric piece (54), and may comprise a strip of nylon fabric having hooked threads. After pulling the piece (54) towards the rib transfer bar (55), the rod (68) may be detached by a further pivotal movement, or by an advance and rotational movement. The mechanism may be statically mounted on or near the machine, preferably on a carriage or at a station to feed bars onto a conveyor.

Description

    Technical field
  • The invention relates to mechanism for automatically transferring rib knitted fabric pieces from a running-on bar to the needles of a straight bar knitting machine.
    • Background Art
  • Patent Specification GB 1195698 describes means by which rib transfer bars are conveyed to the knitting heads of a straight bar machine. Although not described, the ribs of knitted fabric are actually transferred to the needles by a mechanism whereby the ribs are pre-loaded from a running-on system. The problem is to mechanize this operation.
    • The Invention
  • The invention provides mechanism for transferring individual pieces of rib knitted fabric from a running-on bar, which mechanism comprises a rod for engaging the fabric, means for rotating the rod to pull a piece of fabric towards a rib transfer bar of a straight bar knitting machine, gauge-separated elements mounted on an intermediate bar, and means for rotating the intermediate bar to move the elements between the points of the running-on bar and push the fabric piece onto points of a rib transfer bar. The mechanism may be statically mounted on or near the machine, preferably on a carriage, or at a station to feed bars onto a conveyor as in GB 1195698 above.
  • The rod for engaging the fabric is preferably provided with hooks for temporarily securing the rib fabric piece and may comprise a strip of nylon fabric having hooked threads. After pulling the rib towards the rib transfer bar, the rod may be detached by a further pivotal movement, or by an advance and rotational movement.
  • The invention also provides mechanism for transferring individual pieces of rib knitted fabric from a rib transfer bar to the frame needles of a straight bar knitting machine, which mechanism comprises a pair of arms supporting the rib transfer bar, the arms being pivoted with respect to the machine for moving the rib transfer bar between an inoperative position for receiving a piece of rib knitted fabric from a running-on bar and a delivery position where the fabric piece can be moved onto the frame needles.
  • This mechanism can be synchronized to be fed by a mechanism as above from a running-on bar, or may be fed by a push-along conveyor containing a running- on bar with ribs, these ribs being transferred manually onto the rib transfer bars. The mechanism can be part of the fashioning mechanism or a mechanism separate from the fashioning mechanism but having the same motion.
  • All movements can be implemented from a microprocessor or similar programmer from component locations sensed optically or mechanically to synchronize with the pneumatics or power source of the knitting machine. The fabric pieces can be loaded from the running-on bar to the rib transfer bar in its inoperative position while the machine is at a plain or pattern knitting phase of its cycle. Then the lace or marking fingers are raised to an out of action position, and the fashioning fingers are moved laterally out of action beyond the full width of the fashioning bar under central control. This repositioning gives the rib transfer bar a clear path to swing down and locate in the space previously occupied by the lace, marking or fashioning fingers. A piece of rib knitted fabric is delivered from the rib transfer bar to the frame needles at a predetermined time during the re-set sequence by movement of the fashioning mechanism. After delivery, the transfer bar is automatically raised to its inoperative position, ready to receive another rib at some time during the knitting cycle. The lace, marking and fashioning fingers re-assume their operational positions.
  • Each of the mechanisms of the invention may be sold separately as a retrofit for a straight bar knitting machine or as part of a complete machine.
    • Drawings
    • Figure 1 is a cross-sectional view through a knitting head of a straight bar machine equipped with transfer mechanism according to the invention; and
    • Figures 2a, 2b, 2c, 2d and 2e are similar views of the transfer mechanism of Figure 1 in different sequential positions.
    Best Mode
  • To the left of Figure 1, there are shown standard parts of a knitting head. A frame needle 10 (bearded) is fixed in a needle bar 12. To its left, a knockover bar 14 supports a knockover bit 16 above the bar 12. Further to the left is a machine head rail 18 and a strike in jack 20. To the right of a head of the strike in jack 20 is a sinker 22, and above it a catch bar 24 and a yarn feeder 26. The yarn feeder 26 projects from the usual carriage bars 28. To the right is shown a template rail 30 of the machine.
  • Above the frame needle 10, there is shown schematically a rib transfer point 32 which is occupied variously by the lace, marking and fashioning fingers, as well as points of a rib transfer bar according to the invention at different stages of operation of the machine.
  • Above the rib transfer point 32, there are further standard machine parts. Flat bars 34 are provided for the production of selvedge edge in known manner. A lace finger 36 is shown in a raised or out of action position. A fashioning finger 38 is also shown out of action. This mechanism is supported on a shaft 40, fill up shafts rear 42 and front 44, together with a fill up slide 45 mounted on bow arms 46 for pivoting in known manner to allow the introduction of the fashioning head.
  • A rib transfer arm 50 is shown in two positions pivoted about a shaft 52. There are in fact two such rib transfer arms 50 supporting a rib transfer bar 55 shown in an inoperative position to the right for receiving a piece of knitted rib fabric, but omitted for the sake of clarity in a delivery position of the rib transfer arm 50 where the fabric piece can be moved onto the frame needles 10.
  • To the right of Figure 1, there are shown a number of pieces 54 of rib knitted fabric on a running on bar 56 clamped in position at 58 on a carriage 60 whereby they may be moved from head to head along rails 62 which are engaged through wheels 64. A rib transfer point 32 is also shown projecting from the rib transfer bar 55, in this position aligned with a point 66 of the running-on bar 56. Above these points is a rod 68 for engaging a leading individual piece 54 of rib knitted fabric. The rod 68 is provided with hooks (not shown) of nylon thread for temporarily securing the rib piece 54. The rod 68 is integral with arms 70 whereby it can be rotated pneumatically about a shaft 72. The rod 68 is rotated anticlockwise to engage the first rib piece 54, and then clockwise to pull the piece 54 towards the rib transfer points 32. A further pivotal movement of the rod 68 detaches the piece 54.
  • Gauge-separated elements 74 mounted on an intermediate or lift shaft 76 are then moved by axial rotation of the intermediate bar 76 between the running- on point 66 and the rod 68. The separate elements are moved against the force of a return spring 78 between stops on the arms of a U-shaped bracket 80 on an advance shaft 82 which itself is retained against axial movement with respect to the carriage 60 by a spring 84 secured to its base. The elements 74 push the rib piece 54 onto the rib transfer bar 55, where it remains until the end of a knitting cycle. Then the lace, marking and fashioning fingers are moved out of action, and the rib transfer bar 55 is carried by the rib transfer arms 50 in a swinging movement down to a delivery position where the rib piece 54 can be moved onto the frame needles 10 at the start of another knitting cycle.

Claims (7)

  1. In or for a straight bar knitting machine, mechanism for transferring individual pieces (54) or rib knitted fabric from a running-on bar (56), which mechanism comprises a rod (68) for engaging the fabric, means for rotating the rod (68) to pull a piece (54) of fabric towards a rib transfer bar (55), gauge-separated elements (74) mounted on an intermediate bar (76) and means for rotating the intermediate bar (76) to move the elements (74) between points (66) of the running-on bar (56) and push the fabric piece (54) onto points (32) of a rib transfer bar (56).
  2. Mechanism according to claim 1 in which the rod for engaging the fabric is provided with hooks for temporarily securing the fabric piece.
  3. Mechanism according to claim 2 in which the rod is provided with a strip of nylon fabric having hooked threads.
  4. In or for a straight bar knitting machine, mechanism for transferring individual pieces of rib knitted fabric (54) from a rib transfer bar (55) to the frame needles (10), which mechanism comprises a pair of arms (50) supporting the rib transfer bar (55), the arms (50) being pivoted with respect to the machine for moving the rib transfer bar (55) between an inoperative position for receiving a piece of rib knitted fabric (54) from a running-on bar (55) and a delivery position where the fabric piece (54) can be moved onto the frame needles (10).
  5. Mechanism according to claim 4 synchronized to be fed from a running-on bar or by a push-along conveyor containing a running-on bar with ribs, these ribs being transferred manually onto the rib transfer bars.
  6. Mechanism according to any preceding claim which is part of the fashioning mechanism or a mechanism separate from the fashioning mechanism but having the same motion.
  7. Mechanism according to any preceding claim in which all movements are implemented from a microprocessor or similar programmer from component locations sensed optically or mechanically to synchronize with the pneumatics or power source of the knitting machine.
EP19910307379 1990-08-30 1991-08-12 Straight bar knitting machines Withdrawn EP0473317A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909018902A GB9018902D0 (en) 1990-08-30 1990-08-30 Straight bar knitting machines
GB9018902 1990-08-30

Publications (2)

Publication Number Publication Date
EP0473317A2 true EP0473317A2 (en) 1992-03-04
EP0473317A3 EP0473317A3 (en) 1992-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910307379 Withdrawn EP0473317A3 (en) 1990-08-30 1991-08-12 Straight bar knitting machines

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EP (1) EP0473317A3 (en)
GB (1) GB9018902D0 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510577A2 (en) * 1991-04-22 1992-10-28 Intercontinental - Societa' A Responsabilita' Limitata Automatic equipment for feeding cuffs or ribs to loom of cotton type, for production of knitted fabric
EP0518009A1 (en) * 1991-06-13 1992-12-16 Kolbus GmbH & Co. KG Method and device for separating textile articles from a pile
DE4332240A1 (en) * 1993-09-23 1995-03-30 Wirkbau Textilmasch Gmbh Method for the transfer of selvedges produced on selvedge-knitting machines and selvedge-knitting machine for carrying out the process
WO1997031143A1 (en) * 1996-02-24 1997-08-28 The Rhd Company Limited Knitting machine
EP0902112A2 (en) * 1997-09-09 1999-03-17 Tecnotessile S.r.l. Device for transferring the borders of knitted products arranged on an accumulator reed onto the needle beam of a cotton loom
CN103225162A (en) * 2013-04-26 2013-07-31 宁波慈星股份有限公司 Shearing device
CN103225161A (en) * 2013-04-26 2013-07-31 宁波慈星股份有限公司 Flat knitting machine capable of automatically taking down cut-parts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1121144A (en) * 1966-03-14 1968-07-24 Donaldson Brothers Alloa 1937 Improvements in or relating to knitting machines
GB1195698A (en) * 1966-12-08 1970-06-17 Cotton Ltd W Improvements in or relating to Straight Bar Knitting Machines
FR1601753A (en) * 1967-09-01 1970-09-14
GB1260518A (en) * 1969-06-03 1972-01-19 Wirkmaschinenbau Karl Marx Veb Improvements in or relating to devices for transferring pre-fabricated portions of knitted goods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1121144A (en) * 1966-03-14 1968-07-24 Donaldson Brothers Alloa 1937 Improvements in or relating to knitting machines
GB1195698A (en) * 1966-12-08 1970-06-17 Cotton Ltd W Improvements in or relating to Straight Bar Knitting Machines
FR1601753A (en) * 1967-09-01 1970-09-14
GB1260518A (en) * 1969-06-03 1972-01-19 Wirkmaschinenbau Karl Marx Veb Improvements in or relating to devices for transferring pre-fabricated portions of knitted goods

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510577A2 (en) * 1991-04-22 1992-10-28 Intercontinental - Societa' A Responsabilita' Limitata Automatic equipment for feeding cuffs or ribs to loom of cotton type, for production of knitted fabric
EP0510577A3 (en) * 1991-04-22 1992-12-09 Intercontinental - Societa' A Responsabilita' Limitata Automatic equipment for feeding cuffs or ribs to loom of cotton type, for production of knitted fabric
EP0518009A1 (en) * 1991-06-13 1992-12-16 Kolbus GmbH & Co. KG Method and device for separating textile articles from a pile
DE4332240A1 (en) * 1993-09-23 1995-03-30 Wirkbau Textilmasch Gmbh Method for the transfer of selvedges produced on selvedge-knitting machines and selvedge-knitting machine for carrying out the process
DE4332240C2 (en) * 1993-09-23 1998-03-26 Malimo Maschinenbau Method for the transfer of edges produced on edge knitting machines and edge knitting machine for carrying out the method
WO1997031143A1 (en) * 1996-02-24 1997-08-28 The Rhd Company Limited Knitting machine
US6089049A (en) * 1996-02-24 2000-07-18 The Rhd Company Limited Knitting machine
EP0902112A2 (en) * 1997-09-09 1999-03-17 Tecnotessile S.r.l. Device for transferring the borders of knitted products arranged on an accumulator reed onto the needle beam of a cotton loom
EP0902112A3 (en) * 1997-09-09 2000-04-05 Tecnotessile S.r.l. Device for transferring the borders of knitted products arranged on an accumulator reed onto the needle beam of a cotton loom
CN103225162A (en) * 2013-04-26 2013-07-31 宁波慈星股份有限公司 Shearing device
CN103225161A (en) * 2013-04-26 2013-07-31 宁波慈星股份有限公司 Flat knitting machine capable of automatically taking down cut-parts

Also Published As

Publication number Publication date
GB9018902D0 (en) 1990-10-17
EP0473317A3 (en) 1992-05-27

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