JP4135179B2 - Flat knitting machine having at least two needle beds - Google Patents

Description

The present invention is a flat knitting machine having at least two needle beds, and these needles are provided in the needle bed so as to be movable in the longitudinal direction thereof , and supported by each needle so as to be swingable. Related to a pull-down sinker controlled by the control and having a stitch-forming edge.

In knitting machines, efforts have been made to provide a device that can hold a stitch on a needle stem with a certain degree of tension and prevents the needle from being entrained by the needle when the needle is driven forward. As a result, a pull-down sinker has been developed that can swing between a rear position (hereinafter referred to as an open position) and a front position (hereinafter referred to as a closed position) in relation to each needle. In the closed position, the pull-down cam deters the stitch when the needle is pushed out.

The widespread construction type, these cuts sinkers are downgraded element and stitch-forming pieces simultaneously, thus have a stitch-shaped formation edge. Such a lowering sinker is described, for example, in German Patent No. 1172396. A stitch is formed around the chest of this sinker. Due to the rocking motion of the sinker upward, the stitch slides to the sinker chest located after the restraint so that it is captured by the restraint.

  Another pull-down sinker is described in EP 0578458. A thread insertion plate fixedly provided on the needle bed is associated with the pulling sinker. The chest surface of the lower sinker performs the stitch forming function. The stitches slide to the sinker surface behind the groove by the swinging movement of the sinker pulled downward. Subsequently, the lowering sinker moves downward by the spring force, and holds the stitch in the groove. The thread holder has an additional safety function. When the lowering sinker swings upward, the surface of the thread insertion plate facilitates the insertion of the thread into the needle bar.

  The pull-down sinker known from EP 02389797 can perform its function on single-sided and double-sided knitted fabrics. In single-sided knitted fabrics, the stitches are formed around the stitch-forming edges of the lowered sinker. With the subsequent downward swing motion, the stitch slides into the groove in the sinker and is held there. At that time, the sinkers of the front needle bed and the rear needle bed are always opened and closed simultaneously. When all the sinker sinkers are in the closed position, the opposing sinker sinkers of the two needle beds are almost in contact with each other, thereby forming a bridge that covers the oral cavity. Due to the formation of this bridge, in the double-sided knitted fabric, when the needle performs a forward driving motion, the stitch is restrained from its leg side.

  The problem underlying the present invention is to improve a known flat knitting machine pulling device so that, in addition to the improved pulling function, a qualitative improvement of the stitch forming function is also made. .

This object is achieved in the first mentioned type of flat knitting machine, each needle further relevant swingably supported and independently controllable deterrent sinkers and pull-down sinker by the cams of the carriage, behind the pull down sinkers During movement (hereinafter referred to as opening movement) and / or during the push-out movement of the needle holding the stitch, the stitch can be restrained in the stitch space by the restraining sinker.

  Thus, the deterrent sinker improves the deterring function of the pull down sinker, which can have a groove to deter stitches under the stitch forming edge as is well known. Even when the stitches pop out of the grooves during the opening movement of the pulling sinker, the stitches are held in the stitch space by the restraining sinker. Due to the separate controllability of the deterrent sinker compared to the pull down sinker, the deterrent sinker is also used for optimization of stitch formation. That is, in a preferred embodiment, the deterrent sinker determines the position of the yarn at the stitching edge of the lowered sinker when forming a stitch with the associated needle in the same needle bed at the appropriate swing position of the deterrent sinker. The working surface and a second working surface for restraining the stitches when the pulling sinker is opened can be provided at an appropriate swinging position of the restraining sinker. In this case, the restraining sinker is constructed and arranged so that the first working surface restrains the stitches of the opposing needle when the opposing needle is pushing out at an appropriate swinging position of the restraining sinker. The In this case, it is particularly advantageous if the first working surface of the deterrent sinker and the opposing needle driven forward close the mouth gap. Therefore, it is preferable to arrange the suppression sink so that the opposing needle in the forward driven position and the suppression sinker in the forward swing position almost come into contact with each other or overlap at different height positions.

  The deterrent sinker is swingable around a wire guided along the needle bed. This wire serves as a rocking support for all deterrent sinkers of the needle bed.

  For the pull-down sinker, a support element attached to the needle bed can be provided as a rocking support. The support element has a semi-cylindrical upper side, and a lowering sinker with a suitably formed groove slides on the upper side. Since the support element is a separate structural element, it can be manufactured from a material having as good a sliding property as possible.

  Another advantage arises if the position of the support element for the sinker sinker is movable on the needle bed because it changes the gap width of the mouth. Therefore, the width of the mouth gap can be varied in the range of individual needles. As a result, a completely different pattern effect can be obtained as compared with a flat knitting machine according to the prior art.

  Another advantage arises if the pull-down sinker can be locked to the support element, can be removed from the needle bed together with the support element, and can be attached to another part of the needle bed. For removal, a tool can be used that engages the pull-down sinker and removes it from the needle bed along with the support element. Thereby, the change in the gap width of the mouth can be made quickly and easily without a large disassembly work in the needle bed.

  The pull-down sinker can be guided in a direction perpendicular to the needle bed while being prevented from coming off by a sliding surface formed on the needle guide piece. When the needle guide piece swings upward, the pull-down sinker can be prevented from falling off by the leg sides engaged with the groove of the support element extending parallel to the upper side of the support element. Thereby, the pull-down sinker can be prevented from falling off when the needle guide piece necessary for needle replacement is opened.

  The pull-down sinker can be guided laterally between the needle bed protrusion and the wire guide plate. With this guide piece, the pull-down sinker can receive a lateral force that may be caused by the stitch that abuts it.

  Another advantage arises when the lowering sinker always takes a predetermined initial position. Therefore, when not receiving the action of the cam, the spring is held at the foremost swinging position. The spring may be a leg spring that can be locked to the needle bed and fixed at different locking positions. Due to the different locking positions, the depressing force of the pull-down sinker appears in the groove and the stitch leg side is pulled down by this depressing force. Due to the locking connection to the needle bed, the movement of the spring position is possible without disassembly of the needle bed. The leg spring can act on the lower side of the rear end of the pull-down sinker.

The upper side of the support element, the groove on the support element, the sliding surface on the needle guide piece, the spring, and the range of the lower sinker that cooperates with these elements is the rear end of the lower sinker during the opening movement of the needle guide piece After the needle has been placed on the spring, it is preferable that the pull-down sinker is brought into the operating position, that is, the foremost swinging position only by forward movement of the needle guide piece (hereinafter referred to as closing movement) . In such a configuration, the replacement of the lowering sinker is extremely simple as compared with a flat knitting machine according to the prior art. The pull-down sinker can then be removed and replaced without a support element.

The invention also relates to a method for producing a knitted fabric on a flat knitting machine according to the invention, characterized in that it comprises the following steps.
a) The needle is retracted, and the lowering sinker is slightly swung upward, so that the leg of the stitch slides into the groove of the lowering sinker, and then the lowering sinker is swung to the foremost swinging position. Is swung forward, the second working surface reliably holds the old stitch in that position, from which the stitch is pulled down into the sinker groove,
b) The needle is pushed out to form the stitch, and the restraining sinker is swung to the foremost swinging position, where the restraining sinker restrains the stitches on the opposing needles in some cases,
c) The needle is retracted, the thread is inserted into the needle rod, the restraining sinker is swung, and its first working surface abuts against the stitch forming edge of the lowering sinker which is still in the foremost swinging position. The yarn is brought into position, and the stitch forming edge is the shortest yarn or in the case of a yarn consisting of a plurality of yarns, a yarn with the same length of the individual yarns is produced at the needle bar,
d) The needle is further retracted, and the needle rod with the insertion position is passed through the old stitch,
e) At the lowest stitch formation position of the needle, the pull-down sinker is moved backwards for a short time (hereinafter referred to as “open”) , and then moved forward (hereinafter referred to as “closed”) . And the deterring sinker is moved to the stitch deterrence position as in stage a).

  With the method according to the invention and the flat knitting machine according to the invention, one-needle bed knitting and two-needle bed knitting are produced. In the transfer process, the stitches are restrained on the opposing needle beds by the restraining sinker. Even when very large stitches are formed in a single-side knitted fabric, these stitches can be restrained by the opposing needles by the action surface of the restraining sinker.

  A preferred embodiment of a flat knitting machine according to the present invention will be described in detail below with reference to the drawings.

The cross-sectional view of FIG. 1 shows the range of the needle bed 1 where stitch formation is performed. A needle 2 is supported on the needle bed 1 so as to be movable in the longitudinal direction . A detent sinker 4, shown here in the initial position, is provided parallel to the needle 2, spaced by a wire guide plate 3. The restraining sinker 4 can swing around the axis formed by the wire 6, and the direction and magnitude of this swinging movement is influenced by the curved track C of FIG. 2 acting on the sinker head 41. Is done. The curved track C exerts a force on the sinker head 41 in the direction of the arrow X or X ′.

  The deterrent sinker 4 has two working surfaces 42 and 43. The functions of these working surfaces will be described later. Immediately after the deterring sinker 4, a lowering sinker 5 shown in the initial position is provided, and a swinging motion can be performed around the support element 8 provided on the needle bed 1. The pull-down sinker 5 is pressed to the initial position shown in FIG. 1 by the force of a spring (not shown) acting in the direction of arrow Z. This position is also a position where the groove 53 formed in the lowering sinker 5 takes the lowest position with respect to the ridge 21 of the needle 2. The pull-down sinker 5 is a stitch forming body and a stitch inhibiting element at the same time. Accordingly, the pull-down sinker 5 has a stitch forming edge 51 in addition to the groove 53 for suppressing the stitch. While the stitch is formed, the stitch leg edge of the stitch to be formed by the needle 2 abuts on the stitch forming edge 51. The pull-down sinker 5 further has a stitch holding surface 52, and the stitches abut against the stitch holding surface 52 for a short time before the stitch is captured by the groove 53 when the pull-down sinker 5 swings outward. The configuration of the pull-down sinker 5 is largely consistent with the related art with respect to the stitch forming edge 51, the groove 53, and the stitch holding surface 52.

FIG. 2 is a schematic diagram showing cam trajectories A, B, C not shown for other points of the carriage of the flat knitting machine of FIG. 1 in order to control the needle 2, the lowering sinker 5 and the restraining sinker 4. . Curve A is associated with the needle 2, curve B is associated with the lowered sinker 5, and curve C is associated with the deterrent sinker 4. A chain line 101 indicates a common center of the three curved trajectories A, B, and C. When the carriage is moved in the direction of arrow Y, the knitting, stitch forming and restraining elements 2, 5 and 4 perform the movement defined by the curved trajectories A, B and C. In the curved part a, the needle 2, the lowering sinker 5 and the restraining sinker 4 are in the initial positions shown in FIG. In the curved part b, the needle 2 is retracted from the initial position. Cuts sinkers 5 performs short open- and closing motions, deterrence sinker 4 is brought to stitch inhibiting position. This movement of the elements 2, 4 and 5 is a careful movement so that all stitch leg sides are in the groove 53 of the pull-down sinker 5 before the needle push-out movement for forming the stitches begins (FIG. 1). )

  The curve portion c shows the pushing motion of the needle 2 for stitch formation. During this movement, in the single-sided knitting, the pull-down sinker 5 restrains the associated stitch by means of the groove 53. The restraining sinker 4 is brought to the foremost position when the cam piece C 'provided to be movable is moved in the direction of the arrow W. In this foremost position, the working surface 42 (FIG. 1) of the restraining sinker 4 restrains the stitches of the opposing needles as required for double-sided knitting.

  In part d, the needle 2 is in retracting motion. One or more yarns are inserted into the collar 21 (FIG. 1). The lowering sinker 5 is in the initial position. By moving the movable cam piece C ″ in the direction of arrow V, the restraining sinker 4 swings to a position where the working surface 42 determines the position where the yarn contacts the stitch forming surface 51 of the pull-down sinker 5. In the case of a plurality of yarns, a suitable swinging of the restraining sinker 4 further causes the working surface 42 to bring all the yarns side by side to the ideal position where they abut against the stitch forming surface 51, so that the yarns are simultaneously there. Individual contact can be made, as will be described later with reference to FIG.

  In the curved part e, the needle is in the lowest retracting position, ie the stitch forming position. The lowering sinker 5 performs a short opening and closing movement, whereby the stitches formed slide into the grooves 53 of the lowering sinker 5. In order to ensure this short opening movement, the restraining sinker 4 is brought to the stitch restraining position. This process is further illustrated in FIG.

  FIG. 3 is a cross-sectional view corresponding to FIG. 1 and shows the inhibition by the restraining sinker 4 of the stitch 12 'on the needle stem 22' of the needle 2 'of the needle bed (not shown) facing to each other. The suppression sinker 4 is swung to the foremost position by the action in the direction of the arrow X. At this position, while the needle 2 'is moved outward, the working surface 42 of the sinker 4 engages the stitch leg side 12 "of the stitch 12' on the needle stem 22 'of the needle 2' The stitch 12 'can be deterred, and the working surface 42 of the deterrence sinker 4 is thus a deterrent surface here.

FIG. 4 shows how the working surface 42 acts when a stitch is formed by the needle 2 on the needle bed 1 when knitting with three yarns. Deterrence sinkers 4, the working surface 42 until forming the Harikagi 21 and acute angle 120, which is swung about the axis 6. Due to this position of the working surface 42, the yarns individually abut on the stitch forming surface 51 of the pull-down sinker 5, and therefore at the optimum abutting position on the stitch forming surface 51, ie at the same height as the needle bar 41. It is in. The pull-down sinker 5 is swung to the initial position in the direction of arrow Z by the spring force.

  FIG. 5 shows the action of the restraining sinker 4 when forming a stitch from five individual yarns. The deterrent sinker 4 is now swung by the cam in the direction of the arrow X 'so that its working surface 42 forms an angle 130 that is larger than the angle 120 of FIG. This position of the working surface 42 ensures that all yarns line up and abut the stitch forming edge 51 of the pull-down sinker 5. This is important because all yarns form stitch loops of the same length. The yarn is again at the same height as the needle bar 21 and is therefore at the shortest distance to the needle bar 21, i.e. in the ideal stitch formation position. A chain line 100 indicates the centerline of the gap between both needle beds, and only the needle bed 1 is shown in the figure.

  FIG. 6 shows the action of the action surface 43 of the restraining sinker 4 when the stitches are formed by the needles 2 of the same needle bed 1. When the depressing sinker 4 is swung around the axis 6 in the direction of the arrow X and the lowering sinker 5 performs an opening movement, the action surface 43 of the depressing sinker 4 deters the leg side 13 'of the stitch 13, and therefore the stitch The leg side 13 ′ is no longer in the groove 53 of the lowered sinker 5. The stitch leg side 13 ′ is in contact with the stitch holding surface 52 of the lowering sinker 5 by the return swing of the lowering sinker 5 around the support element 8 by the force Z ′ acting on the end of the lowering sinker 5.

  7, 8 and 9 show relative knitting, stitch formation and restraining elements 2, 5 and 4 with respect to the mirror-like elements 2 ′, 5 ′ and 4 ′ of the needle bed 1 ′ in different knitting processes. The location is shown.

  FIG. 7 shows the initial position of the needle bed 1, 1 ′ when the needles 2, 2 ′, the wire guide plates 3, 3 ′, the lowering sinkers 5, 5 ′ and the restraining sinkers 4, 4 ′ form a double-sided knitted fabric. It is shown in The figure shows that the needle 2 of the needle bed 1 and the deterring sinker 4 'of the needle bed 1' facing each other are almost in contact with each other. As a result, the opposing restraining sinker 4 ′ can restrain the stitches on the needle 2. The same applies to the stitches formed by the needles 2 'of the needle bed 1'. These stitches are restrained by the opposing restrainer sinker 4 of the needle bed 1. This substantial mutual contact is made when the needles 2, 2 'are pushed out and the deterrent sinkers 4, 4' are in the foremost swing position. At that time the mouth gap is closed.

  FIG. 8 shows again all the stitch forming elements 2, 4, 5 of the needle bed 1, but only the needle 2 'of the needle bed 1'. The needles 2, 2 'are in an initial position with respect to each other. Here, the deterrent sinker 4 overlaps the lower side of the needle 2 'and is provided below the needle 2'.

  FIG. 9 shows in principle a view corresponding to FIG. 8, in which only the needle 2 'of the needle bed 1' is shown. Here, the needles 2 and 2 'are in a transfer position. The deterring sinker 4 does not overlap the lower side of the needle 2 ', but is provided closer to the needle 2' so that the stitches can be reliably deterred on the needle 2 '.

10 to 14 show the structure, support and guidance of the pull-down sinker 5 and its movable arrangement on the needle bed 1. The cross-sectional view is a cross-sectional view of the needle bed 1 in the range of the lowering sinker 5 in the initial position again. As can be seen from FIG. 10, the support element 8 is provided on the needle bed protrusion 14. Therefore, the projecting piece 14 has locking openings 141, 141 ′, 142, 142 ′. The support element 8 is provided with locking legs 85 and 86, and can be alternatively locked in the locking openings 141 'and 142'. In the illustrated example, the locking legs 85 and 86 are inserted into the front locking openings 141 and 142. This causes a small comb gap, half of the comb gap width K are entered in FIG. 10. By shifting the support element 8 to the locking openings 141 ′ and 142 ′, the gap width 2K can be increased.

  The support element 8 has an arcuate or semi-cylindrical surface 81 on which a correspondingly formed groove 55 of the pull-down sinker 5 can slide on this upper surface 81. The swinging motion of the lower sinker 5 to the right is performed by the spring 15 acting on the surface 57 below the rear end of the lower sinker 5. Therefore, the spring 15 has a spring leg 151 that contacts the surface 57. The closing position of the lower sinker 5 is defined by the stopper surface 58 of the lower sinker 5. The stopper surface 58 abuts on the surface 164 of the needle guide piece 16. The needle guide piece 16 guides the lowering sinker 5 in a direction perpendicular to the needle bed 1. Therefore, the needle guide piece 16 has a surface 161, and the arc surface 56 on the upper side of the lowering sinker 5 slides along this surface 161. The needle guide piece 16 is opened by swinging upward. During the opening movement, the lowering sinker 5 is prevented from falling off. Accordingly, the second fixing in the vertical direction takes place in the form of a groove 82 of the support element 8 which extends substantially parallel to the upper side 81 of the support element 8. A leg side 59 formed corresponding to the lowering sinker 5 is engaged with the groove 82.

The force exerted by the sinker 5 on the stitches in the groove 53 can be changed by shifting the spring 15 on the needle bed protrusion 14 . Therefore, the needle bed protrusion 14 can be provided with other locking openings 143, 143 ′, 143 ″ and 144, 144 ′, 144 ″. This results in three different locking positions for the spring 15 with the locking legs 154, 155. In the illustrated example of FIG. 10, the locking legs 154, 155 are in the front locking openings 143, 144, whereby the spring 15 introduces the weakest moment to the sinker 5. Near the locking legs 154 and 155, a head 156 protrudes from the main body 153 of the spring 15 beyond the upper edge of the needle bed protrusion 14. The spring 15 has its head 156 captured by a tool, removed from the locking openings 143 and 144, and locked into another locking opening 143 ′, 144 ′ or 143 ″, 144 ″. Can do.

  FIG. 11 shows a view corresponding to FIG. 10, but the support element 8 is locked in the locking openings 141 ', 142', whereby the half gap width K is increased. The forward swinging movement of the lower sinker 5 shown in FIG. 11 is limited by the surface 500 on the upper side of the lower sinker 5 that contacts the surface 165 of the needle guide piece 16.

  FIG. 12 shows the support element 8 and the lower sinker 5 in a position where the lower sinker 5 is fixedly locked to the support element 8. This fixed locking of the pull-down sinker 5 and the support element 8 makes it easy to shift both elements 5, 8 to the different locking openings 141, 141 ′, 142, 142 ′ of the needle bed protrusion 14. After the interlocking of both elements 5, 8, these elements can be captured by a tool and displaced together. The elements 5 and 8 are locked by removing the fixed wedge 17 of the needle guide piece 16 shown in FIGS. 10 and 11, swinging the needle guide piece 16 upward, and applying a force to the pull-down sinker 5 in the direction of arrow Q. Is done by. Thereby, the grooves 59 ′, 59 ″ on the leg side 59 of the pull-down sinker 5 make a locking connection with the appropriate projections 82 ′, 82 ″ in the groove 82 of the support element 8. Then, the sinker 5 is captured by the tool at arrows R and R 'and pulled upward. As a result, the locking legs 85 and 86 are disengaged from the locking openings 141 'and 142'. Subsequently, the unit composed of the lowering element 5 and the supporting element 8 is moved forward, and forces S and S ′ are exerted on the lowering sinker 5, whereby the locking legs 85 and 86 of the supporting element 8 are moved to the needle bed protrusion 14. It fits into the locking openings 141 and 142. Thereafter, the lowering sinker 5 is unlocked from the support element 8 by simple swinging, the needle guide piece 16 is closed, and the fixed wedge 17 is reintroduced.

  FIG. 13 shows a view corresponding to FIG. 11, but the spring 15 is now locked in the last position, ie the locking openings 143 ″, 144 ″. FIG. 13 shows the lateral force generated when the rear end portion 502 of the lowering sinker 5 is guided between the needle bed protrusion 14 and the wire guide plate 3 and a force is applied to the sinker surface 501 in the direction of the arrow Z ′. Can be received by the control curve.

  However, the side guidance of the lowering sinker 5 is not limited to the rear end 502. That is, as shown in FIG. 14, the lowering sinker 5 is guided between the wire guide plate 3 and the needle bed protruding piece 14 also in the range after the stitch forming edge 51.

  15-20 show the insertion of a new lower sinker, for example when replacing the lower sinker 5 after its damage. 15 to 20 again show the cross section of the needle bed 1 in the range of the needle groove for the needle 2.

  FIG. 15 shows the needle guide piece 16 in an opened state, and this open position is a non-operating position. Locking is performed by the grooves 165 and 165 'of the swing opening of the needle guide piece 16 with which the guide wire 11 is engaged. The rear end 502 of the pull-down sinker 5 is pushed into the associated longitudinal groove of the needle bed, and this longitudinal groove is laterally limited by the needle protrusion 14 and the needle guide plate 3. Pushing is limited by the fact that the surfaces 57 and 504 of the lower sinker 5 abut against the leg sides 151 of the spring 15. In that case, the rolling surface 503 provided at the rear end 502 of the pull-down sinker 5 is below the guide surface 146 of the needle bed protrusion 14.

  FIGS. 16 to 20 show how a simple closing movement of the needle guide piece 16 brings the lowering sinker 5 into the operating position.

  FIG. 16 shows that the guide surface 166 is in contact with the circular arc surface 56 on the upper side of the lowering sinker 5 due to the first swing of the needle guide piece 16. Further, the surfaces 57 and 504 of the lower sinker 5 abut against the leg sides 151 of the spring 14, and the rolling surface 503 is supported by the surface 146 of the needle bed protrusion 14.

  As shown in FIG. 17, when the needle guide piece 16 further swings, the surface 501 of the lowering sinker 5 is supported by the surface 146 of the needle bed protruding piece 14. Thereby, the lowering sinker 5 is moved vertically and horizontally.

  As shown in FIG. 18, when the needle guide piece 16 further closes, the surface 57 of the pull-down sinker 5 further contacts the leg side 151 of the spring 15, and the arc surface 56 now contacts the guide surface 161. Thereby, the lowering sinker 5 is subjected to a vertical movement which is strengthened downward.

  FIG. 19 shows how the groove 55 of the pull-down sinker 5 comes into contact with the upper side 81 of the support element 8 when the needle guide piece 16 is further swung at the point P. The leg sides of the pull-down sinker 5 are in contact with the groove section surface 87 of the support element 8.

  FIG. 20 shows the needle guide piece 16 just before its closed position. The surface 57 of the lowering sinker 5 continues to abut the leg side 151 of the spring 15. The surface 55 of the pull-down sinker 5 is now in full contact with the upper side 81 of the support element 8 in practice. The leg side 59 of the pull-down sinker 5 is still outside the groove 82 of the element 8. However, when the needle guide piece 16 is completely closed, the spring 15 pushes down the sinker 5 to the initial position.

  Accordingly, FIGS. 15-20 show that the appropriate guide surface on the needle guide piece 16, the appropriate configuration of the edge surface of the lower sinker 5 cooperating with the needle bed protrusion 14 and the support element 8, and the spring 15, It shows that the pull-down sinker 5 can be brought to the initial position by placing the rear end 502 on the spring 15 and closing the needle guide piece 16. This greatly simplifies changing the sinker sinker.

  FIG. 3 shows a cross-sectional view of the front area of the flat knitting machine needle bed in the area with the associated sinker and deterrent sinker in the initial position.   FIG. 2 shows a schematic diagram of a curved track of a knitting cam that controls the knitting elements, stitch forming elements and restraining elements of the flat knitting machine of FIG. 1.   FIG. 2 shows a cross-sectional view corresponding to FIG. 1 of a flat knitting machine needle bed with opposing needle bed needles and a deterrent sinker in the foremost swing position.   Sectional drawing corresponding to FIG. 1 of the flat knitting machine needle bed which has the needle | hook which forms a stitch with three thread | yarns, and a sinker is shown.   Sectional drawing corresponding to FIG. 4 of the flat knitting machine needle bed which has an element at the time of forming a stitch with five yarns is shown.   FIG. 2 shows a cross-sectional view corresponding to FIG. 1 of a flat knitting machine needle bed with a deterrent sinker holding the stitches and a pull-down sinker opened.   FIG. 2 shows a plan view of a portion of both needle beds of the flat knitting machine of FIG. 1 with the needle bed in an initial position.   FIG. 8 shows a view with needles pushed to different degrees of the second needle bed and corresponding to FIG.   FIG. 8 shows a view in which the needles are in a transfer position with respect to each other and corresponds to FIG.   FIG. 2 shows a cross-sectional view of the flatbed machine needle bed of FIG. 1 in the range of the lowered sinker.   Sectional drawing corresponding to FIG. 10 of the needle bed in which the pull-down sinker is displaced is shown.   FIG. 4 shows a detailed view of the down sinker and deterrent sinker that are offset from each other.   FIG. 12 shows a cross-sectional view corresponding to FIG. 11 of a needle bed with a retracted spring for the pull-down sinker.   A part of the needle bed viewed in the direction of arrow T in FIG. 11 is shown.   FIG. 2 shows a cross-sectional view corresponding to FIG. 1 of the needle bed in the area of the needle guide groove with the opened needle guide piece in the first position of the pull-down sinker insertion.   FIG. 16 shows a cross-sectional view corresponding to FIG. 15 in a second position for inserting the sinker sinker.   FIG. 16 shows a cross-sectional view corresponding to FIG. 15 in a third position for inserting the sinker sinker.   FIG. 16 shows a cross-sectional view corresponding to FIG. 15 in a fourth position for inserting the sinker sinker.   FIG. 16 shows a cross-sectional view corresponding to FIG. 15 in a fifth position for inserting the sinker sinker.   FIG. 16 shows a cross-sectional view corresponding to FIG. 15 in a sixth position for inserting the sinker sinker.

Explanation of symbols

1, 1 'needle bed 2, 2' needle 4, 4 'restraining sinker 5, 5' pull-down sinker 12, 12 ', 13, 13' stitch

Claims (18)

A flat knitting machine having at least two needle beds (1, 1 '), wherein the needles (2, 2') are provided movably in the longitudinal direction in the needle bed (1, 1 '); Each needle (2, 2 ') is provided with a pull-down sinker (5, 5') supported swingably and controlled by a carriage cam and having a stitch forming edge (51). 'to swingably supported and carriage of O Ri control can suppress sinkers to the cam (4, 4 (2,2)' rearward rocking of) the further comes, it cuts sinkers (5, 5 ') Sai及beauty stitches (12 during extrusion motion ', 13) the needle (2, 2 for holding a'), suppression sinkers (4, 4 ') by stitches (12', 13) is deter possible The lower sinker (5, 5 ') is formed by the needle (2, 2') of the same needle bed (1, 1 ') below the stitch forming edge (51). Characterized in that it has a groove (53) to prevent the stitches (13), the flat knitting machine. When the restraining sinker (4, 4 ') forms a stitch with the associated needle (2) of the same needle bed at the appropriate swing position of the restraining sinker (4, 4'), stitch formation of the lowered sinker (5) The first working surface (42) for determining the position of the yarn on the edge (51) and the swinging of the pull-down sinker (5, 5) at an appropriate swinging position of the restraining sinker (4, 4 ') The flat knitting machine according to claim 1, characterized in that it has a second working surface (43) for restraining the stitch (13). When the first working surface (42) pushes out the opposing needle (2 ') at an appropriate swing position of the deterrent sinker (4, 4'), the opposing needle (2 ') The flat knitting machine according to claim 2, characterized in that the stitch (12 ') is restrained. The flat knitting machine according to claim 2 or 3, characterized in that the first working surface (42) of the restraining sinker (4) and the opposed needle (2 ') driven forward close the mouth gap. 5. A transverse side according to claim 1, characterized in that the deterrent sinker (4) is swingable about an axis (6) guided along the needle bed (1, 1 '). Knitting machine. The pull-down sinker (5,5 ') swings around the support element (8) attached to the needle bed (1,1'). The flat knitting machine according to claim 1, wherein the flat knitting machine is movable. The support element (8) has a semi-cylindrical upper side (81), and a lowering sinker (5, 5 ') with a suitably formed groove (55) slides on the upper side (81). Item 7. The flat knitting machine according to Item 6. The flat knitting machine according to claim 6 or 7, characterized in that the support element (8) is made of a material with good sliding properties. The position of the support element (8) for the pull-down sinker (5, 5 ') is movable on the needle bed (1, 1') in order to change the gap width (2K). The flat knitting machine according to one of claims 6 to 8. The pull-down sinker (5, 5 ') can be locked to the support element (8) and can be removed from the needle bed (1, 1') together with the support element (8). The flat knitting machine according to claim 9, wherein the flat knitting machine can be attached to another part of the flat knitting machine. The lowering sinker (5, 5 ') is guided in a direction perpendicular to the needle bed (1, 1) while being prevented from coming off by a sliding surface (161) formed on the needle guide piece (16). The flat knitting machine according to claim 1, wherein When the needle guide piece (16) swings upwards, the pull-down sinker (5, 5 ') goes into the groove (82) of the support element (8) extending parallel to the upper side (81) of the support element (8). The flat knitting machine according to one of claims 6 to 11, characterized in that it is prevented from falling off by the engaging leg sides (59). The pull-down sinker (5, 5 ') is guided laterally between the needle bed projection (14) and the axial guide plate (3, 3'). The flat knitting machine according to one. 14. The lower sinker (5, 5 ') is held in its foremost swinging position by a spring (15) when not acted on by a cam. Flat knitting machine. 15. The flat knitting machine according to claim 14, characterized in that the spring (15) is a leg spring that can be locked to the needle bed (1) and can be fixed at different locking positions. The flat knitting machine according to claim 15, characterized in that the leg spring (15) acts on the lower side (57) of the rear end (502) of the pull-down sinker (5, 5 '). The upper side (81) of the support element (8), the groove (82) in the support element (8), the sliding surface (161) in the needle guide piece (16), the spring (15), and these elements (81, 82) , 161, 15), the range (55, 56, 59) of the lowering sinker (5, 5 ') that cooperates with the lower sinker (5, 5') when the needle guide piece (16) swings backward. After the rear end (502) rests on the spring (15), the lower sinker (5, 5 ') is brought to the initial position only by the forward swinging of the needle guide piece (16). The flat knitting machine according to one of claims 6 to 12, or one of 14 to 16, characterized in that A method for producing a knitted fabric on a flat knitting machine according to one of claims 1 to 17, comprising the following steps:
a) The needle (2, 2 ') is retracted, and the lowering sinker (5, 5') is slightly swung upward, so that the stitch leg side is the groove (53) of the lowering sinker (5, 5 '). Then, the sinker sink (5, 5 ') is swung to the foremost swing position, and the deterrent sinker (4, 4') is swung forward. Moved, its second working surface (43) ensures that the old stitch is held in its position, from which the stitch reaches the groove (53) of the sinker (5, 5 '),
b) The needle (2, 2 ') is pushed out to form the stitch, and the restraining sinker (4, 4') is swung to the foremost swinging position. Deter the stitches in
c) The needle (2, 2) is retracted, the thread is inserted into the needle rod (21), the deterrent sinker (4, 4 ') is swung and its first working surface (42) is still the most Yarn is brought to the contact position of the pulling sinker (5, 5) in the previous swinging position with the stitch forming edge (51), and the stitch forming edge (51) is a yarn composed of the shortest yarn or a plurality of yarns. In the case of, a thread with the same length of each thread is formed at the needle rod (21),
d) The needle (2, 2 ') is further retracted and the needle rod (21) with the insertion position is passed through the old stitch,
e) At the lowest stitch formation position of the needle (2, 2 '), the pull-down sinker (5, 5') is swung backward for a short time and then swung forward. ) Slides into the groove (53) of the pull-down sinker (5, 5 ') and the deterring sinker (4, 4') is moved to the stitch deterrence position as in step a).
A method characterized by that.

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