EP3012363B1 - Aiguille a tricoter pour machine, systeme de formation de maille et utilisation dudit agencement dans un procédé sur une machine a tricoter - Google Patents

Aiguille a tricoter pour machine, systeme de formation de maille et utilisation dudit agencement dans un procédé sur une machine a tricoter Download PDF

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Publication number
EP3012363B1
EP3012363B1 EP15190723.5A EP15190723A EP3012363B1 EP 3012363 B1 EP3012363 B1 EP 3012363B1 EP 15190723 A EP15190723 A EP 15190723A EP 3012363 B1 EP3012363 B1 EP 3012363B1
Authority
EP
European Patent Office
Prior art keywords
needle
hook
machine
machine knitting
longitudinal direction
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.)
Active
Application number
EP15190723.5A
Other languages
German (de)
English (en)
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EP3012363A1 (fr
Inventor
Uwe Stingel
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.)
Groz Beckert KG
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Groz Beckert KG
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Publication date
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Publication of EP3012363A1 publication Critical patent/EP3012363A1/fr
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Publication of EP3012363B1 publication Critical patent/EP3012363B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06—Sliding-tongue needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/04—Flat-bed knitting machines with independently-movable needles with two sets of needles
    • D04B7/06—Flat-bed knitting machines with independently-movable needles with two sets of needles for purl work or Links-Links loop formation
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/10—Circular knitting machines with independently-movable needles with two needle cylinders for purl work or for Links-Links loop formation

Definitions

  • the invention relates to a machine knitting needle, an arrangement for forming stitches with such a machine knitting needle and the use of the arrangement in the production of knitwear in a knitting machine having a first needle bed and a second needle bed.
  • the needle beds can be circular or flat.
  • the knitting machine can therefore be a circular knitting machine or a flat knitting machine.
  • the double headed needle has a needle body extending in a longitudinal direction. At the two longitudinally opposite ends of the Doppelkopfzeptnadel each have a needle hook. Each needle hook curves from an underside of the needle to an upper side around a respective hook inner region. Each needle hook is assigned in each case a pivotally mounted tongue. In a closed position, the tongue end abuts the associated needle hook and closes off the respective hook inner region. If the tongue is removed from the associated hook, the hook inner region is accessible and a thread section or a loop can be introduced into the hook inner region.
  • the pivotally mounted tongues are very sensitive to forces and moments that are introduced transversely or obliquely to the pivoting direction, in particular parallel to the pivot axis.
  • the tongue movement is triggered when using the Doppelkopfzeptnadel in the knitting machine through the meshes that can swing the tongue either from its closed position to the open position or vice versa from the open position to the closed position. For example, if a thread break occurs during knitting, the respective tongues are no longer actuated and can not change the position in the subsequent knitting process. These tongues can then collide with a thread guide, a tongue opener or another part of the knitting machine and thereby be damaged or bent.
  • the tongues after discarding a finished knitwear article, the tongues must be reopened to receive the newly inserted yarn prior to loading the next knitwear article.
  • This opening can be effected by various means, for example by an air jet, by a mechanical tongue opener or by brushing. With all these means there is a risk that the tongue or the tongue bearing will be damaged.
  • a new yarn are inserted, for which purpose each tongue must be brought into a defined position, since there is no mesh, by means of which the tongue is moved during the normal knitting process.
  • US 2010/0095709 A1 proposes a double-headed needle, in which the needle body has a survey or a bump, which adjoins the hook inner region. Above this elevation is the tip of the hook.
  • a force acting on the hook tip force the hook tip can be elastically bent and brought to the survey to the system to close the respective hook inner region.
  • a closing means is necessary, which applies a corresponding force for elastic bending of the hook.
  • a left-and-left flat knitting machine goes off DE 28 53 819 C2 out.
  • a double-headed needle with two hooks is used, which cooperates with slider boards of the knitting machine.
  • the needle body Adjacent to the respective hook, the needle body has a bump whose highest point is approximately at the level of the tip of the hook. The area between the bump and the tip of the hook can be bridged by a finger of the slide plate via the respectively associated slide plate. As a result, the respective hook inner area between the hook and the hump is closed.
  • This knitting machine requires a double-headed needle and two slide plates, which are specially adapted to each other. The slider boards and the double headed needle are guided separately in the needle beds of the knitting machine.
  • an improved machine knitting needle an improved arrangement for the production of knitwear with such a machine knitting needle and an improved method for using such an arrangement in a knitting machine are to be provided.
  • the machine knitting needle according to the invention is especially adapted for use in left-to-left knitting machines. It has a longitudinally extending needle body with a bottom and an opposite top.
  • the needle body has at its one end a first hook which curves from the lower side to the upper side about a first hook inner region.
  • the needle body has a second hook which curves from the bottom to the top about a second hook interior.
  • a hook-closing element is movably arranged or stored.
  • the hook closing element can be moved between a first closed position and a second closed position. In the closed position, the hook-closing element prevents a stitch or a thread section from penetrating into the respective hook inner region.
  • a first longitudinal end of the hook-closing element engages the first hook and closes off the first hook inner region.
  • a second longitudinal end of the hook closing element engages the second hook and closes off the second hook inner region.
  • the machine knitting needle has a hook closing element which can optionally close the first hook inner region or the second hook inner region.
  • the hook closing element is in particular adapted to be moved by an associated closing actuating element between the closed positions.
  • the relative movement between the needle body and the hook-closing member is adjusted independently of the movement of a stitch or thread along the machine knitting needle.
  • only a single hook closing element is still present, which is associated with two hooks. Two independently movable closing elements for each hook are not provided. The movement control of the hook-closing element is thereby simplified and the process reliability is increased.
  • a relative movement between the hook closing element and the needle body by the storage of the hook closure element allows only in a single degree of freedom or a maximum of two degrees of freedom.
  • the hook closure member is slidably mounted on the needle body in the longitudinal direction, for example in a longitudinal recess of the needle body.
  • the hook-closing element could also engage over the needle body so that the longitudinal recess is present on the hook-closing element, as it were, into which the needle body engages.
  • the movement of the hook closing element takes place relative to the needle body in particular by a translational movement in the longitudinal direction.
  • this translational movement in the longitudinal direction can also be superimposed on a translational movement in a height direction perpendicular to the longitudinal direction.
  • the longitudinal recess may be partially closed at the top of the needle body, whereby the hook-closing element is held in the needle body.
  • the longitudinal recess is completely or partially closed at the bottom of the needle body in one embodiment.
  • the needle body preferably has a needle shank that extends between the two hooks. Subsequent to a respective hook, the needle body has a needle breast which extends obliquely from the underside to the top side.
  • the hook closing element can be moved into a neutral position between the two closed positions and in this Neutral position are kept. In the neutral position both hook inner areas of the machine knitting needle are open to the top. In the neutral position, the two longitudinal ends of the hook-closing element preferably do not protrude beyond the needle body, at least not above an upper edge bounding the needle body at the upper side. Preferably, the hook closing element is completely within the predetermined by the needle body outer contour.
  • the upper edge delimiting the needle body at the upper side is in particular free from edges and / or projections and / or shoulders, so that a stitch can slide freely along the upper edge from one hook inner region to the other hook inner region.
  • the hook closing element is in its neutral position, this movement is not hindered by the hook-closing element.
  • the machine knitting needle is preferably configured symmetrically to a plane of symmetry perpendicular to the longitudinal direction when the hook closing element is in the neutral position.
  • the hook-closing element has at least one operating recess open towards the top.
  • the actuating recess is delimited by two actuating recess flanks spaced apart in the longitudinal direction.
  • a closing actuator may engage the actuating recess to longitudinally move the hook closure member relative to the needle body. It is also advantageous if the hook-closing element has two actuation recesses arranged at a distance from one another in the longitudinal direction for one closing actuation element in each case.
  • the at least one actuation recess is preferably arranged completely below an upper edge bounding the needle body at the top. This allows a loop to slide along the needle body without entering the actuating recess.
  • a stitching assembly for use in a left-to-left knitting machine includes a machine knitting needle as described above.
  • the arrangement further includes a first actuating unit and a second actuating unit for the machine knitting needle.
  • the first actuating unit has a first needle actuating element which is adapted to displace the needle body in the longitudinal direction relative to a needle bed of the knitting machine and / or to the hook closing element.
  • the first actuating unit includes a first closing actuating element, which is adapted to move the hook closing element relative to the needle body and / or the needle bed.
  • the first needle actuating element and the first closing actuating element are movable relative to each other, in particular in the longitudinal direction relative to each other displaceable.
  • the needle body and the hook closing element can be moved independently of each other in the longitudinal direction, whereby a relative movement of the hook closing element relative to the needle body can be generated.
  • the second operating unit is constructed according to the first operating unit and has a second needle actuating element and a second closing actuating element.
  • This arrangement is very easy to use in knitting machines.
  • the control of elements used in the stitch formation and their translational movement in the longitudinal direction relative to a needle bed can be easily achieved with known control means of a knitting machine. Independently of a mesh movement or a movement of a yarn section relative to the machine knitting needle, it is ensured that the hook closing element occupies a relative position with respect to the needle body defined by an actuating unit at all times. Even with a thread break or re-staining the defined position of the hook closing element can be ensured very easily at any time. Furthermore, only a single element of the machine knitting needle which is movable relative to the needle body is required in order to selectively close one of the two hook inner regions. Particularly preferred is an embodiment in which the hook closing element performs a translational movement in the longitudinal direction between the two closed positions, since such a movement can be achieved very easily and no pivot bearing as pivotally mounted needle tongues is required.
  • each needle actuating element has a guide groove in which the respectively associated closing actuating element is arranged to be displaceable in the longitudinal direction relative to the respective needle actuating element.
  • the closing actuating element may also be referred to as a "slide pusher”.
  • each needle actuating element has a hook recess which is designed to receive the associated hook of the machine knitting needle. Via the hook recess and the associated hook of the machine knitting needle, a movement coupling of the needle actuating element with the machine knitting needle can be achieved.
  • the hook recess has two longitudinally spaced apart hook cutout flanks between which a portion of the hook bow extends which adjoins the hook tip when the needle actuation member is motion coupled to the machine knitting needle.
  • each closing actuating element has an actuating projection which extends transversely to the longitudinal direction in the height direction.
  • Each actuation projection can engage in the respectively associated actuation recess for coupling the closure actuation element with the hook closure element.
  • both actuation units can be coupled to the machine knitting needle for a period of time, which ensures that at any time a defined relative position of the Hook closing element with respect to the needle body is present.
  • the arrangement described above can be used in a knitting machine having a first needle bed and a second needle bed.
  • first needle bed and a second needle bed.
  • second needle bed the following steps are performed:
  • the machine knitting needle is in the first needle bed and the last knitted stitch is held in the first hook inside area of the first hook.
  • the machine knitting needle is movement-coupled to the first actuating unit or is guided in a movable manner in the longitudinal direction by the first actuating unit on the first needle bed.
  • the hook closing element is brought into its neutral position in which both hook inner regions are open to the top.
  • the machine knitting needle With the aid of the first actuating unit, the machine knitting needle is displaced in the longitudinal direction toward the second needle bed. In this case, the last knitted stitch slides out of the first hook inner region along the upper edge of the needle body. Moving the machine knitting needle is stopped or slowed down when it is in a transfer point where the two hooks are in different needle beds.
  • the last knitted stitch is preferably located approximately in the middle of the machine knitting needle, in particular between the two actuating recesses of the hook closing element.
  • While moving the machine knitting needle into the Transfer position can be moved simultaneously to the second actuator unit on the first needle bed. Alternatively, this movement can only take place after the machine knitting needle is in the transfer position. In the transfer position, both actuation units are or are at least temporarily coupled in terms of movement with the machine knitting needle during a period of time. After the motion coupling of the second actuating unit with the machine knitting needle, the first actuating unit is decoupled from the machine knitting needle. Subsequently, the movement of the machine knitting needle away from the first needle bed with the help of the second actuator unit can be continued.
  • the shifting of the machine knitting needle by means of the second operating unit may be stopped longitudinally from the first needle bed or reversed in the opposite direction as soon as the last knitted stitch is in the second hook inner area of the second hook. At this time, the transfer of the machine knitting needle is completed.
  • a last period of time during the transfer of the machine knitting needle can also be used for stitch formation.
  • the movement of the machine knitting needle is stopped by the second actuator unit away from the first needle bed in a thread feed position or the movement is at least delayed as long as the last knitted stitch is still arranged outside the second hook inner region on the needle body.
  • the hook closing element can be moved relative to the needle body in the longitudinal direction and the second hook inner area partially closed.
  • sliding or slipping of the last knitted stitch into the second hook inner region can be prevented or at least made more difficult.
  • a thread section for the formation of a new stitch is inserted with the aid of a thread guide. Subsequently, the second hook inner region is closed by the second hook closing element is moved to its second closed position.
  • the machine knitting needle can be further moved away from the first needle bed in the longitudinal direction and the inserted thread section can be pulled through the last knitted machine. In this way, a new stitch is formed and held in the second hook inner region of the second hook.
  • the machine knitting needle 10 has a needle body 11 extending in a longitudinal direction L and a hook closing member 12 mounted on the needle body 11.
  • the needle body 11 has a bottom U and a top O. At the bottom U of the needle body 11 has at least one and example according to two treads 13 which extend in a common plane. The at least one running surface 13 is adapted for engagement with a bottom 14 in a needle channel 15 of a needle bed, for example according to a first needle bed 16 or a second needle bed 17 ( FIGS. 4a to 4f or FIGS. 5a to 5g ).
  • the longitudinal recess 21 has the shape of an open towards the top O groove.
  • the longitudinal recess 21 may be open over its entire length to the top O out.
  • the longitudinal recess 21 may be partially closed at the top O, for example, characterized in that at least one of the two side cheeks 20 has a bead 22 which engages over the longitudinal recess 21 ( FIG. 3 ).
  • the longitudinal recess 21 to the top O is completely open.
  • the At least one running surface 13 may have recesses or depressions for forming a lubricant reservoir, these lubricant reservoirs being open to the respectively assigned surface of the needle channel 15.
  • the needle body 11 has a first hook 26 at a first end portion 25.
  • the first hook 26 curves starting from the bottom U to a first hook inner region 27 to the top O out.
  • the needle body 11 has a second end portion 28 with a second hook 29, which curves from the bottom U to a second hook inner region to an upper side U out.
  • the two hooks 26, 29 form the opposite ends of the needle body 11.
  • the two hooks 26, 29 have, starting from their respective hook tip on a curved portion and then go into a needle shaft 31 of the needle body 11 via.
  • the needle shaft 31 means the region in which the longitudinal recess 21 in the needle body 11 is located in the longitudinal direction L.
  • the needle shank 31 extends between the two hooks 26, 29. Following a respective hook 26, 29, the needle shank 31 has in each case one of the underside to the top obliquely extending needle breast 31 a.
  • the needle shaft 31 Between the two end portions 25, 28 of the needle body 11 and, for example, the needle shaft 31 has a central portion 32.
  • the central portion 32 is connected via a respective connecting portion 33 on the one hand to the first end portion 25 and the other end portion 28.
  • the central portion 32 is parallel to the two end portions 25, 28 and is relative to the end portions 25, 28 offset in the height direction H.
  • the connecting portions 33 extend obliquely to the longitudinal direction L.
  • At the bottom U of the needle body 11 in the region of the central portion 32 and the connecting portions 33 has a distance from a plane in which the two treads 13 are located.
  • the longitudinal recess 21 has in the embodiment illustrated here a groove bottom which extends in a plane. In the region of the connecting portions 33 and / or the central portion 32 of the needle body 11, the longitudinal recess 21 may be open to the bottom U out.
  • the hook closing element 12 of the machine knitting needle 10 is inserted and mounted relative to the needle body 11 in the longitudinal direction L slidably.
  • the hook closing element 11 is designed as a flat molded part or stamped part.
  • the thickness of the hook closing element 12 at right angles to the height direction H and at right angles to the longitudinal direction L corresponds approximately to the distance between the two side cheeks 20 of the needle body 11.
  • the hook closing element 12 has a first longitudinal end 37 and a longitudinal longitudinal L opposite second longitudinal end 38. At the first longitudinal end 37, a first longitudinal end portion 39 and connects to the second longitudinal end 38, a second longitudinal end portion 40 at.
  • the hook closure element 12 preferably extends in a straight line along the longitudinal axis L.
  • the two longitudinal end sections 39, 40 each have a lower edge 41, with which the hook closure element 12 rests against the groove bottom of the longitudinal recess 21 in the needle body 11.
  • the two Bottom edges 41 extend along a common plane.
  • a central portion 42 of the hook closing element 12 also extends in the longitudinal direction L and is offset from the two longitudinal end portions 39, 40 in the height direction H.
  • the middle section 42 is connected on the one hand to the first longitudinal end section 39 and on the other hand to the second longitudinal end section 40 via an intermediate section 43 running obliquely to the longitudinal direction L.
  • the hook closing element 12 is at a distance from the plane in which the lower edges 41 extend.
  • the hook closure element 12 has at least one actuation recess and, for example, a first actuation recess 44 and a second actuation recess 45.
  • the actuation recesses 44, 45 are open and accessible in the height direction H on the side opposite the bottom edges 41.
  • the operation recesses 44, 45 are open and accessible to the top O side.
  • Each actuation recess 44 has two actuation recess flanks 46 spaced apart in the longitudinal direction L.
  • the hook-closing element 12 can be moved in the longitudinal direction L relative to the needle body 11.
  • first closed position S1 the first longitudinal end 37 of the hook closing element 12 bears against the first hook 26 and closes the first hook inner region 27.
  • second closed position S2 the second longitudinal end 38 of the hook closing element 12 bears against the second hook 39 and closes the second hook inner region 30.
  • the hook closing element 12 is thus associated with both hooks 26, 29 and can either close one or the other hook inner region 27, 30.
  • the two closed positions S1, S2 represent the end positions between which the hook-closing element 12 is movable in the longitudinal direction L relative to the needle body 11.
  • the hook-closing element 12 is moved along the needle body 11 only translationally in the longitudinal direction L.
  • the groove bottom of the longitudinal recess 21 unlike the preferred embodiment, could have inclined surfaces running obliquely to the longitudinal direction and to the height direction H. In this case, with a displacement of the hook closing element 12 in the longitudinal direction L by the course of the groove bottom, an additional movement in height direction H can be superimposed.
  • the two closed positions S1, S2 are shown schematically in dashed lines FIG. 1 illustrated.
  • FIG. 2 is a further pronounced relative position of the hook closing element 12 with respect to the needle body 11 illustrated.
  • This position can be referred to as neutral position N.
  • the hook closing element 12 In the neutral position N, the hook closing element 12 is located, for example, centrally between the two closed positions S1, S2.
  • both hook inner regions 27, 30 are open toward the upper side O.
  • the upper edge 50 extends along the needle shank 31 from the first hook 26 to the second hook 29 and defines the needle shank 31 and needle body 11 at the top O.
  • the upper edge 50 is divided into two edge portions 50a in the embodiment described herein. Each edge portion 50a is provided on the top O side facing a side cheek 20 ( FIG. 3 ). Both edge sections 50a together form the upper edge 50.
  • the two edge sections 50a extend in a side view onto the machine knitting needle 10 along a common contour line, which thus likewise represents the contour line of the upper edge 50 (FIG. FIGS. 1 . 2 . 4 and 5 ).
  • the upper edge 50 and the edge portions 50a are preferably formed without sharp edges, shoulders or the like, so that a mesh of a hook inner region 27 or 30 along the upper edge 50 without being damaged in the other hook inner region 30 and 27 can slide.
  • Directional changes in the course of the upper edge 50 or the edge portions 50a are realized by curved regions, for example radii ( FIG. 3 ).
  • curved regions for example radii ( FIG. 3 ).
  • FIGS. 1 . 2 . 4 and 5 These rounded areas are illustrated schematically simplified by corners, although they are preferably rounded.
  • the two actuating recesses 44, 45 are in the neutral position N of the hook closing element 12 seen in the height direction H below the upper edge 50.
  • the contour of the hook closing element 12 is so on adapted to the contour of the needle body 11 and the needle shaft 31 that the hook closing element 12 protrudes at any point from the contour of the needle body 11 and the needle shaft 31 and in particular not over the top edge 50.
  • a mesh can therefore along the upper edge 50 of the needle body eleventh slide without coming into contact with the hook closing element 12, when this is in the neutral position N.
  • An arrangement 53 which is used in a knitting machine and, for example, in a left-and-left knitting machine for knitting, includes, in addition to the machine knitting needle 10, a first actuating unit 54 and a second actuating unit 55 (FIG. FIGS. 1 and 4 ).
  • the two actuator units 54, 55 are constructed identically.
  • FIG. 1 is the second actuator 55 only partially indicated schematically.
  • the first actuating unit 54 has a first needle actuating element 56 and a first closing actuating element 57.
  • the second actuating unit 55 has a second needle actuating element 58 and a second closing actuating element 59. Since the structure of the operating units 54, 55 is identical, will be described below with reference to FIGS. 1 and 2 only the first actuating unit 54 is explained, the explanations correspondingly applying to the second actuating unit 55.
  • the first needle actuating element 56 has a contact edge 60 with which it can be brought to bear against the bottom 14 of the needle channel 15.
  • the abutment edge 60 is located in a control section 61 of the first needle actuating element 56.
  • This control section 61 projects on the abutment edge 60 in the height direction H opposite side of a control foot 62 away, which can be coupled for control with a first control unit 63 of the knitting machine.
  • the first control unit 63 has a control means, for example a control lock 64, which is adapted to displace the first needle actuating element 56 in the longitudinal direction L along the first needle bed 16.
  • the first control unit 63 also has a decoupling means 65, which is adapted to decouple the first actuating unit 54 from the machine knitting needle 10.
  • the first actuating unit 54 can be tilted or inclined, for example, so that a working section 66, which adjoins the control section 61, moves away from the bottom 14 of the needle channel 15 of the first needle bed 16.
  • the first needle actuating element 56 has a hook recess 70.
  • the hook recess 70 serves to receive the associated second hook 29 of the machine knitting needle 10 when the first operating unit 54 is coupled to the machine knitting needle 10.
  • the hook recess 70 has two mutually spaced in the longitudinal direction L Hakenaussparungsflanken 71, 72.
  • the first hook recess flank 71 adjoins the contact edge 60.
  • a guide portion 73 of the first needle actuator 56 to the free end 74.
  • a retaining projection 75 away, at which the second Hakenaussparungsflanke 72 is arranged. Between the two Hakenaussparungsflanken 71, 72 is a downwardly or to the first needle bed 16 open hook recess 70 is formed.
  • the two recess flanks 71, 72 run, for example, parallel to one another in the height direction H.
  • the retaining projection 75 has a triangular shape in the exemplary embodiment.
  • the distance between the two Hakenaussparungsflanken 71, 72 in the longitudinal direction L is adapted to the dimensions of the associated hook 26, 29. This distance corresponds essentially to the distance between two parallel and perpendicular to the longitudinal direction oriented planes, one of which is applied to the tip of the hook and the other tangent to the hook bow.
  • a guide groove 76 extends in the longitudinal direction L.
  • the guide groove 76 is open in the embodiment described here down to the contact edge 71 and the hook recess 70 and at least partially closed in the opposite direction. In the longitudinal direction L, the guide groove 76 is open at least at the free end 74 of the first needle actuating element 56.
  • the first needle actuating element 56 can also be formed to form the guide groove 76 from two cheeks extending parallel to one another, the gap between these cheeks representing the guide groove 76.
  • the first is displaceable in the longitudinal direction L.
  • Closing actuator 57 arranged. At its one end, the first closing actuating element 57 has an actuating projection 77, which protrudes downward in the height direction H from a guide part 78, for example.
  • the guide part 78 extends in the longitudinal direction L.
  • the first closing actuation element 57 has, analogously to the first needle actuation element 56, a control foot 62 which serves for coupling to the first control unit 63.
  • the control foot 62 of the first closing actuating element 57 is assigned a separate control means, for example a control lock 64 of the first control unit 63.
  • the first needle actuating element 56 and the first closing actuating element 57 can be moved together in the longitudinal direction L relative to the first needle bed 16 and / or relative to one another and relative to the first needle bed 16 in the longitudinal direction L.
  • the operating projection 77 of the first closing actuating element 57 engages in the first actuating recess 44.
  • the second hook 29 protrudes into the hook recess 70 and is coupled in the longitudinal direction L with the first needle actuating element 56.
  • the actuating projection 77 of the second closing actuating element 59 engages in the second actuating recess 45 and the first hook 26 protrudes into the hook recess 70 of the second needle actuating element 58 and is coupled in the longitudinal direction L to the second needle actuating element 58.
  • the second operating unit 55 is associated with a second control unit 79 which moves the second needle actuating element 58 and the second closing actuating element 59 in the longitudinal direction L together relative to the second needle bed 17 and / or relative to each other in the longitudinal direction L.
  • the two control units 63, 79 and the respectively associated actuating unit 54, 55 are shown schematically in FIG FIG. 4a illustrated and omitted in other figures for clarity.
  • FIG. 3 schematically illustrates the coupling of the first control unit 63 to the arrangement 53.
  • the second control unit 79 may be coupled to the assembly 53 accordingly.
  • FIGS. 4 and 5 the application of the assembly 53 in a knitting machine with a first needle bed 16 and a second needle bed 17 based on FIGS. 4 and 5 explained.
  • it is a left-to-left knitting machine that can be used to make left-to-left knitwear.
  • To make this knitwear it is necessary to transfer the machine knitting needle 10 after stitch formation from one needle bed 16, 17 into the other needle bed 17, 16 respectively.
  • This process is schematic in the FIGS. 4a to 4f illustrated.
  • the machine knitting needle 10 is located on the first needle bed 16 and is coupled to the first operating unit 54.
  • the second hook 29 engages the hook recess 70 on the first needle actuating element 56, so that the needle body 11 is coupled in the longitudinal direction L to the first needle actuating element 56.
  • the operating projection 77 of the first closing actuating element 57 engages in the first actuating recess 44, so that the hook closing element 12 of the machine knitting needle 10 is coupled in the longitudinal direction L with the first closing actuating element 57.
  • the hook closing element 12 is in its neutral position N.
  • the last knitted loop M is held.
  • the knitted fabric is arranged in the area between the two needle beds 16, 17.
  • the two needle beds 16, 17 and the bottoms 14 of the opposing needle channels 15 extend in a common plane, so that the machine knitting needle 10 can be moved back and forth by a translational movement in the longitudinal direction L between the two needle beds 16, 17.
  • the first operating unit 54 In order to transfer the machine knitting needle 10 from the first needle bed 16 to the second needle bed 17 and to couple it with the second operating unit 55, the first operating unit 54 initially moves the machine knitting needle 10 in the longitudinal direction L toward the second needle bed 17, whereby the last stitched stitch M passes along the upper edge 50 slides along the needle body 11. Since the hook closing element 12 is in its neutral position N, the sliding of the stitch M along the needle body 11 is possible without hindrance ( FIG. 4b ). It is also possible to bring the hook closing element 12 into the neutral position at the beginning of the movement of the machine knitting needle 10 by moving the first needle actuating element 56 and the first closing actuating element 57 relative to one another.
  • the second actuating unit 55 is moved relative to the second needle bed 17 on the first needle bed 16.
  • the machine knitting needle 10 under the operating projection 77 of second closing actuating element 59 can be moved therethrough, a tilting or tilting of the second actuating unit 55 can take place via the second control unit 79.
  • this tilting of the second actuating unit 55 can also be done by the machine knitting needle 10 and in particular the hook closing element 12 as soon as the operating projection 77 or another element of the second actuating unit 55 gets in contact with the machine knitting needle 10 and then slides along the upper edge 50 of the machine knitting needle 10.
  • FIG 4c the transfer position T of the machine knitting needle 10 is illustrated.
  • both actuating units 54, 55 are motion-coupled to the machine knitting needle 10, that is, the first hook 26 engages the hook recess 70 of the second hook actuating element 58 and the second hook 29 engages the hook recess 70 of the first needle actuating element 56 and the actuating projections 77 of the two closing actuation elements 57, 59 engage in the respectively associated actuation recess 44, 45 on the hook closure element 12.
  • the last knitted loop M is located between the two actuating units 54, 55 or between the two actuating recesses 44, 45 on the knitting machine needle 10.
  • the first actuating unit 54 is decoupled from the machine knitting needle 10 (FIG. FIG. 4d ). This can be done via the first control unit 63 by tilting or tilting the first actuating unit 54 relative to the longitudinal axis L, so that the actuating projection 77 moves away from the first actuating recess 44 and the second Hook 29 out of engagement with the first needle actuator 56 passes.
  • the machine needle 10 is moved further away from the first needle bed 16 in the longitudinal direction L via the second actuating unit 55, so that the stitch M continues along the needle body 11 ( Figure 4e ). This movement can be continued until the last knitted loop M has reached the second hook inner region 30 of the second hook 29 ( FIG. 4f ).
  • the first actuating unit 54 can be moved away from the second needle bed 17 in the longitudinal direction L into an initial position.
  • FIGS. 5a to 5g the stitch formation is schematically illustrated by means of the arrangement 53.
  • the stitch formation is carried out using one of the two actuating units 54, 55 on the respective needle bed 16, 17.
  • the process is identical for both actuating units 54, 55 and both needle beds 16, 17.
  • the hook closing element 12 is in the respective closed position, ie in the first closed position S1 or the second closed position S2. In the hook inner region 27 and 30, the last knitted loop M is trapped.
  • the hook-closing element 12 is moved into its neutral position N, in which it releases the hook inner region 27 or 30.
  • This is achieved, for example, in that the needle body 11 extends in the longitudinal direction L over the free end of the Needle bed 16 or 17 is pushed through the relevant needle actuating element 56 or 58, so that the hook 26 or 29 projects beyond the needle bed 16 or 17 ( FIG. 5b ).
  • the closing actuator 57 and 59 the hook closing element 12 is moved in the same direction, but with a smaller stroke.
  • the machine knitting needle 10 is moved out of the needle bed 16 or 17 until the last knitted stitch M has been moved out of the hook inner region 27 or 30 out of the needle shaft 30 onto the needle shaft 30.
  • a new thread section 81 or yarn section is introduced into the hook inner region 27 or 30 via a yarn guide 80 ( FIG. 5d ).
  • the hook inner region 27 or 30 is partially closed by the hook-closing element 12 in order to prevent the last knitted loop M from sliding from the needle shaft 31 into the hook inner region 27 or 30.
  • the hook-closing element 12 is moved into its relevant closed position S1, S2 and the thread section 81 is held in the hook inner region 27 or 30 (FIG. FIG. 5e ).
  • the movement of the hook closing element 12 from the partially closed position (FIG. FIG. 5d ) in the closed position S1 or S2 ( FIG. 5e ) is effected by a corresponding relative movement of the closing actuating element 57 or 59 relative to the needle actuating element 56 or 58, wherein preferably the needle body 11 relative to the needle bed 16 or 17 remains unmoved until the closed position S1 or S2 is reached.
  • the invention relates to a machine knitting needle 10, an arrangement 53 which has such a machine knitting needle 10 and two actuating units 54, 55 and a method for using such an arrangement 53 or a machine knitting needle 10 in a knitting machine with a first needle bed 16 and a second needle bed 17
  • the machine knitting needle 10 has a needle body 11 which extends in the longitudinal direction L and has a hook 26, 29 at both ends.
  • a hook closing element 12 is movable and in particular translationally mounted in the longitudinal direction L slidably. The hook closing element 12 can be brought into abutment with the respective other hook 29 in a first closed position S1 for engagement with the one hook 26 and in another, second closed position S2.
  • the closing element 12 is moved by a closing actuating element 57 or 59 of an actuating unit 54 or 55 of the arrangement 53 in the longitudinal direction L relative to the needle bed 16 or 17 and / or relative to the needle body 11.
  • the relative position of the hook closing element 12 is unaffected by the relative movement between a stitch M and the machine knitting needle 10.

Landscapes

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

Claims (15)

  1. Aiguille de tricotage (10) pour machine à tricoter destinée à une machine à tricoter gauche-gauche, comportant un corps d'aiguille (11) s'étendant dans une direction longitudinale (L), qui présente une face inférieure (U) et une face supérieure (O), le corps d'aiguille (11) présentant à l'une de ses extrémités un premier crochet (26) courbe depuis la face inférieure (U) jusqu'à la face supérieure (O) autour d'une première zone intérieure (27) de crochet et présentant à une extrémité opposée dans la direction longitudinale (L) un deuxième crochet (29) courbe de la face inférieure (U) à la face supérieure (O) autour d'une deuxième zone intérieure (30) de crochet comportant un élément de fermeture (12) de crochet qui est disposé sur le corps d'aiguille (11) et qui est mobile par rapport au corps d'aiguille (11), qui, dans une première position de fermeture (S1) empêche l'introduction d'une maille (M) ou d'un segment de fil (81) dans la première zone intérieure (27) de crochet, caractérisée en ce que l'élément de fermeture (12) de crochet peut être déplacé entre une première position de fermeture (S1) et une deuxième position de fermeture et, dans la deuxième position de fermeture (S2), l'empêche l'introduction d'une maille (M) ou d'un segment de fil (81) dans la deuxième zone intérieure (30) de crochet.
  2. Aiguille de tricotage pour machine à tricoter selon la revendication 1,
    caractérisée en ce que l'élément de fermeture (12) de crochet est disposé de façon à pouvoir être déplacé dans un évidement longitudinal (21) du corps d'aiguille (11), dans la direction longitudinale (L).
  3. Aiguille de tricotage pour machine à tricoter selon la revendication 2,
    caractérisée en ce que l'évidement longitudinal (21) est fermé par endroits sur la face supérieure (O) du corps d'aiguille (11).
  4. Aiguille de tricotage pour machine à tricoter selon l'une des revendications qui précèdent,
    caractérisée en ce que l'élément de fermeture (12) de crochet peut être déplacé par rapport au corps d'aiguille (11) entre les positions de fermeture (S1, S2) exclusivement avec un ou au maximum deux degrés de liberté.
  5. Aiguille de tricotage pour machine à tricoter selon l'une des revendications qui précèdent,
    caractérisée en ce que l'élément de fermeture (12) de crochet peut être déplacé jusqu'à atteindre une position neutre (N), entre les deux positions de fermeture (S1, S2), dans laquelle les deux zones intérieures (27, 30) de crochet sont ouvertes en direction de la face supérieure (O).
  6. Aiguille de tricotage pour machine à tricoter selon la revendication 5,
    caractérisée en ce que l'élément de fermeture (12) de crochet ne dépasse pas dans la position neutre (N) au-dessus d'un bord supérieure (50) qui limite le corps d'aiguille (11) sur la face supérieure (O).
  7. Aiguille de tricotage pour machine à tricoter selon l'une des revendications qui précèdent,
    caractérisée en ce que l'élément de fermeture (12) de crochet présente au moins un évidement d'actionnement (44, 45) ouvert en direction de la face supérieure (O) qui est limité dans la direction longitudinale (L) par deux flancs (46) d'évidement disposés en ménageant un écart.
  8. Aiguille de tricotage pour machine à tricoter selon la revendication 5 ou 6 et selon la revendication 7,
    caractérisée en ce que l'évidement d'actionnement (44, 45) de l'évidement (12) de crochet au minimum unique, se trouve, dans la position neutre (N) complètement en dessous d'un bord supérieur (50) qui limite le corps d'aiguille (11) sur la face supérieure (O).
  9. Dispositif (53) de formation de mailles pour machine à tricote gauche-gauche,
    comportant une aiguille de tricotage (10) pour machine à tricoter selon l'une des revendications qui précèdent,
    comportant un premier ensemble d'actionnement (54) qui présente un premier élément d'actionnement d'aiguille (56) en vue du déplacement du corps d'aiguille (11) dans la direction longitudinale (L) par rapport à une première planche d'aiguilles (16) et un premier élément d'actionnement de fermeture (57) destiné au déplacement de l'élément de fermeture (12) de crochet par rapport au corps d'aiguille (11),
    comportant un deuxième ensemble d'actionnement (55) qui présente un deuxième élément d'actionnement d'aiguille (58) en vue du déplacement du corps d'aiguille (11) dans la direction longitudinale (L) par rapport à une deuxième planche d'aiguille (17) et un deuxième élément d'actionnement de fermeture (59) en vue du déplacement de l'élément de fermeture (12) de crochet par rapport au corps d'aiguille (11).
  10. Dispositif selon la revendication 9,
    caractérisé en ce que chaque élément d'actionnement d'aiguille (56, 58) présente une gorge de guidage (76) dans laquelle l'élément d'actionnement de fermeture (57, 59) concerné dans chaque cas est disposé de façon coulissante dans la direction longitudinale (L) par rapport à l'élément d'actionnement (56, 58) concerné dans chaque cas.
  11. Dispositif selon la revendication 9 ou 10,
    caractérisé en ce que chaque élément d'actionnement d'aiguille (56, 58) présente un évidement (70) pour crochet qui est conformé en vue de recevoir le crochet (26, 29) affecté de l'aiguille de tricotage pour machine à tricoter (10).
  12. Dispositif selon les revendications 9 à 11,
    caractérisé en ce que chaque élément d'actionnement de fermeture (57, 59) présente une saillie d'actionnement (77) qui peut être introduite dans un évidement d'actionnement (44, 45) affecté dans chaque cas, situé sur l'élément de fermeture (12) de crochet.
  13. Procédé de formation de maille au moyen d'un dispositif (53) selon une des revendication 9 à 12, dans une machine à tricoter dotée d'une première planche d'aiguilles (16) et d'une deuxième planche d'aiguilles (17), comportant les étapes suivantes :
    - Maintien de la maille (M) tricotée en dernier lieu dans la première zone intérieure de crochet (27) du premier crochet (26), l'aiguille de tricotage pour machine à tricoter (10) se trouvant dans une première planche d'aiguilles (16) et le premier ensemble d'actionnement (54) étant couplé pour son déplacement avec l'aiguille de tricotage pour machine à tricoter (10),
    - Utilisation du premier ensemble d'actionnement (54) pour déplacer dans la direction longitudinale (L) l'aiguille de tricotage (10) pour machine à tricoter vers la deuxième planche d'aiguilles (17), la maille (M) glissant hors de la première zone intérieure (27) de crochet et le long du corps d'aiguille (11), et le déplacement de l'aiguille de tricotage pour machine à tricoter (10) étant arrêté ou ralenti au moyen du premier ensemble d'actionnement (54) lorsque l'aiguille de tricotage pour machine à tricoter (10) se trouve dans une position de transfert (T) dans laquelle les deux crochets (26, 29) se trouvent dans des planches d'aiguilles (16. 17) différentes,
    - Couplage de déplacement du deuxième ensemble d'actionnement (55) avec l'aiguille de tricotage pour machine à tricoter (10),
    - Découplage du premier ensemble d'actionnement (54) d'avec l'aiguille de tricotage pour machine à tricoter (10),
    - Poursuite du déplacement de l'aiguille de tricotage pour machine à tricoter (10) au moyen du deuxième ensemble d'actionnement (55) dans la direction longitudinale (L) à l'écart de la première planche d'aiguilles (16).
  14. Procédé selon la revendication 13,
    caractérisé en ce que le déplacement de l'aiguille de tricotage pour machine à tricoter (10) au moyen du deuxième ensemble d'actionnement (55) dans la direction longitudinale (L) à l'écart de la première planche d'aiguilles (16) est arrêté ou inversé aussitôt que la maille (M) se trouve dans la deuxième zone intérieure (30) de crochet du deuxième crochet (29).
  15. Procédé selon la revendication 13,
    caractérisé en ce que
    - le déplacement de l'aiguille de tricotage pour machine à tricoter (10) au moyen du deuxième ensemble d'actionnement (55) dans la direction longitudinale (L) à l'écart de la première planche d'aiguilles (16) dans une position d'amenage (F) du fil de l'aiguille de tricotage pour machine à tricoter (10) est arrêté ou retardé avant que la maille (M) se trouve dans la deuxième zone intérieure (30) de crochet du deuxième crochet (29),
    - en ce que l'élément de fermeture (12) de crochet est déplacé dans la direction longitudinale (L) par rapport au corps d'aiguille (11) de telle manière que la deuxième zone intérieure (30) de crochet est partiellement fermée et qu'un glissement de la maille (M), tricotée en dernier lieu, jusque dans la deuxième zone intérieure (30) est au moins rendu difficile
    - et qu'un segment de fil (81) est disposé en vue de la formation d'une nouvelle maille (M*) dans la deuxième zone intérieure (30) de crochet,
    - Fermeture de la deuxième zone intérieure (30) de crochet au moyen du déplacement de l'élément de fermeture (12) du crochet jusque dans sa deuxième position de fermeture (S2).
    - Utilisation du deuxième ensemble d'actionnement (55) pour le déplacement de l'aiguille de tricotage pour machine à tricoter (10) dans la direction longitudinale (L) et traction du segment de fil (81) disposé dans la deuxième zone intérieure (30) de crochet par la maille (M) tricotée en dernier lieu, grâce à quoi une nouvelle maille (M*) se trouve formée.
EP15190723.5A 2014-10-21 2015-10-21 Aiguille a tricoter pour machine, systeme de formation de maille et utilisation dudit agencement dans un procédé sur une machine a tricoter Active EP3012363B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014115345.6A DE102014115345B4 (de) 2014-10-21 2014-10-21 Maschinenstricknadel, Anordnung zur Maschenbildung sowie Verwendung dieser Anordnung in einer Strickmaschine

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EP3012363A1 EP3012363A1 (fr) 2016-04-27
EP3012363B1 true EP3012363B1 (fr) 2017-04-05

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EP (1) EP3012363B1 (fr)
JP (1) JP6109903B2 (fr)
KR (1) KR101804751B1 (fr)
CN (1) CN105525432B (fr)
DE (1) DE102014115345B4 (fr)
ES (1) ES2624617T3 (fr)
HK (1) HK1223406A1 (fr)
PT (1) PT3012363T (fr)
TW (1) TWI589745B (fr)

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GB2579339B (en) * 2018-10-04 2021-07-07 Vandewiele Nv A hook for a tufting machine

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GB846972A (en) * 1958-02-07 1960-09-07 Stibbe G & Co Ltd Improved circular knitting machine of the superimposed needle cylinder type
US3423962A (en) 1966-04-11 1969-01-28 Bentley Eng Co Ltd Circular knitting machines
US3423926A (en) 1966-08-31 1969-01-28 Garrett Corp Turbocharger control arrangement
US3404546A (en) * 1967-01-30 1968-10-08 Singer Co Links and links knitting machine with pivotal jacks
GB1421741A (en) 1972-02-19 1976-01-21 Bentley Eng Co Ltd Composite sliders
GB1514063A (en) * 1975-06-24 1978-06-14 Koike F Hand operated knitting machine
DE2853819C2 (de) 1978-12-13 1980-09-11 Universal-Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co Kg, 7081 Westhausen Links + Links-Flachstrickmaschine
JPS55112347A (en) * 1978-12-13 1980-08-29 Schieber Universal Maschf Lefttleft flat weft knitting machine
DE2932207C2 (de) 1979-08-08 1981-11-19 Universal-Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co Kg, 7081 Westhausen Doppelkopfnadel
DE2944300C2 (de) 1979-11-02 1983-01-27 Universal-Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co Kg, 7081 Westhausen Doppelkopfnadel
CS247664B1 (en) * 1984-02-07 1987-01-15 Evzen Fischer Circular knitting frame
JP5010674B2 (ja) 2006-03-31 2012-08-29 ロナティ エッセ．ピ．ア． 靴下類等のための円形編機
CZ2007107A3 (cs) 2007-02-12 2008-08-20 Golden Lady Company S.P.A. Jehelní ústrojí
EP2065498B1 (fr) * 2007-11-30 2013-01-23 H. Stoll GmbH & Co. KG Aiguille à clapet
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CN102031632A (zh) * 2010-12-15 2011-04-27 常州市武进五洋纺织机械有限公司 一种高速经编机的短动程舌针
CN202000080U (zh) * 2011-01-17 2011-10-05 南通市光阳针业有限公司 织针

Also Published As

Publication number Publication date
EP3012363A1 (fr) 2016-04-27
TWI589745B (zh) 2017-07-01
TW201615914A (zh) 2016-05-01
DE102014115345B4 (de) 2019-04-25
ES2624617T3 (es) 2017-07-17
JP6109903B2 (ja) 2017-04-05
DE102014115345A1 (de) 2016-04-21
CN105525432B (zh) 2019-05-10
KR101804751B1 (ko) 2017-12-05
HK1223406A1 (zh) 2017-07-28
CN105525432A (zh) 2016-04-27
JP2016079552A (ja) 2016-05-16
PT3012363T (pt) 2017-05-25
KR20160046739A (ko) 2016-04-29

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