EP3054041B1 - Machine a tricoter a plateau equipe d'une platine mobile - Google Patents

Machine a tricoter a plateau equipe d'une platine mobile Download PDF

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Publication number
EP3054041B1
EP3054041B1 EP16154106.5A EP16154106A EP3054041B1 EP 3054041 B1 EP3054041 B1 EP 3054041B1 EP 16154106 A EP16154106 A EP 16154106A EP 3054041 B1 EP3054041 B1 EP 3054041B1
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EP
European Patent Office
Prior art keywords
sinker
cam
loop
movable
needle
Prior art date
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Application number
EP16154106.5A
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German (de)
English (en)
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EP3054041A1 (fr
Inventor
Masaki Miyamoto
Yoshinori Shimasaki
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Shima Seiki Mfg Ltd
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Shima Seiki Mfg Ltd
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Publication of EP3054041A1 publication Critical patent/EP3054041A1/fr
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/06—Sinkers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines
    • D04B15/362—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines

Definitions

  • the present invention relates to a flatbed knitting machine equipped with movable sinkers which act on loops in a needle bed gap so as to prevent the loops from being raised upward together with knitting needles.
  • a flatbed knitting machine is provided with at least a pair of needle beds that oppose each other in a needle bed gap interposed between the needle beds. Knitting needles that are accommodated in needle grooves on the needle beds are selectively driven by a cam system mounted on a carriage reciprocating in the lengthwise direction of the needle beds. By making hooks, provided at leading ends of the knitting needles, to advance to or retreat from the needle bed gap, it becomes possible to perform a knitting operation to form stitches with a knitting yarn, a stitch transfer operation to receive and send the stitches between the knitting needles with the needle bed gap interposed therebetween, and the like.
  • Sinkers that are provided between the knitting needles so as to face the needle bed gap perform a stitch determination operation of forming sinker loops in the needle bed gap in corporation with the hooks forming needle loops (hereinafter, referred to as "new loop") while receiving yarn feeding in the needle bed gap and being drawn into the needle beds in formation of the stitches.
  • new loop a stitch determination operation of forming sinker loops in the needle bed gap in corporation with the hooks forming needle loops
  • Each movable sinker has, on a portion of the leading end part, a part called a yarn receive part or the like that acts on the sinker loop continuous to a needle loop (hereinafter, referred to as "old loop") held on the hook so as to prevent the needle loop from being raised upward when the hook is made to advance to the needle bed gap.
  • old loop a needle loop
  • the needle loop and the sinker loop of the stitch are collectively referred to as a "loop" simply.
  • the movable sinker as disclosed in Patent Literature 2 can press a knitted fabric down by pressing a loop downward by biasing with a spring.
  • the pressing action of the movable sinker is once stopped before the hook is made to advance to the needle bed gap and is restarted when the hook is made to advance to the needle bed gap, so that the loop is pressed reliably.
  • the pressing action of the movable sinker is stopped in yarn feeding, and is restarted after the yarn feeding, and stitch determination is performed.
  • the movable sinker as disclosed in Patent Literature 3 is used in combination with a fixed sinker that is provided on a needle bed at the side of the needle bed gap.
  • the movable sinker performs the action to prevent the loop from being raised upward whereas the fixed sinker performs stitch determination, so that action of the movable sinker on a sinker loop is stopped in a section from yarn feeding to the stitch determination. After the stitch determination, control is finished in a state where the movable sinker acts on the loop.
  • Prior art document EP 2 789 718 A1 discloses a flat knitting machine with a biasing cam surface which presses a leading end of a torque spring of which base end is set to a portion between a support receive part and a function arm of a sinker so as to bias the sinker through the torque spring.
  • the pressing force can be weakended in an opened state even when it is strengthened in a closed state.
  • a stress of the torque spring in the opened state also does not become larger than that in the closed state so that an increase in the stress amplitude of the torque spring is prevented when the sinker is opened and closed even with each movable sinker controlled directly by the sinker cam mounted on the carriage.
  • a sinker mechanism for a flat knitting machine wherein a sinker is disposed at the front end of the needle bed of a flat knitting machine so as to be capable of swing discplacement.
  • Each of the movable sinkers as disclosed in Patent Literatures 1 to 3 acts on a loop so as to prevent the loop from being raised upward when the knitting needle holding the old loop is made to advance to the needle bed gap and a non-acting section, in which the action of the movable sinker is stopped, is set while the knitting needle is made to retreat from the needle bed gap and forms a new loop from the yarn feeding to the stitch determination.
  • a non-acting section in which the action of the movable sinker is stopped
  • An object of the present invention is to provide a flatbed knitting machine equipped with movable sinkers capable of stopping to start action of the movable sinker preceding the non-acting section.
  • the present invention is a flatbed knitting machine equipped with movable sinkers, each of which advances to and retreats from a needle bed gap and is arranged between knitting needles accommodated in needle grooves, provided on needle beds in parallel, having a cam system, which is mounted on a carriage reciprocating along the needle bed, causes the knitting needles to advance to and retreat from the needle bed gap, and which includes a sinker control cam performing control such that:
  • said sinker control cam comprises:
  • said sinker control cam comprises a moving cam to move between said position and the non-acting section as a cam capable of switching whether to stop or not the action of the yarn receive part.
  • said movable sinker is biased by a spring such that said yarn receive part rocks in a direction of acting on said loop
  • said sinker control cam controls the movable sinker through a jack to advance and to retreat in an advancing/retreating direction of said knitting needle to/from said needle bed gap
  • the jack drives the movable sinker in a direction orthogonal to the advancing/retreating direction so as to cause the movable sinker to rock in a direction to stop the action of the yarn receive part on the loop.
  • a yarn receive part provided on a leading end part of the movable sinker acts on the loop in the needle bed gap.
  • a sinker control cam can cause the movable sinker, which keeps a state where the yarn receive part acts on the loop, to stop the action in a non-acting section that is set when the knitting needle is made to retreat from the needle bed gap, and can switch the movable sinker to start stopping the action at a position preceding the start position of the non-acting section in a running direction of a carriage.
  • a range in which the action of the movable sinker on the loop is stopped is switched in accordance with knitting conditions as in a case where a knitting yarn having low strength, which is easily broken, is used, and a case where short stitches with small loop lengths are knitted excessively finely, so that appropriate knitting can be performed.
  • the yarn receive part of the movable sinker can be made into the non-acting state continuously to the non-acting section.
  • Arising and setting cam at the following side corresponds to the preceding side when the running direction of the carriage is inverted and can switch whether to stop or not the action of the yarn receive part at the position preceding the non-acting section.
  • the sinker control cam can switch whether to stop or not the state where the yarn receive part of the movable sinker acts on the loop by causing the rising and setting cams at both sides that are supported by arms of rocking levers at both sides to rise and set by rocking of the rocking levers which are driven by a single driving source.
  • the driving source is single, a mechanism can be simplified.
  • the sinker control cam can switch whether to stop or not the state where the yarn receive part of the movable sinker acts on the loop by moving a position of a moving cam between a preceding position in the running direction of the carriage and the non-acting section.
  • the movement position of the moving cam can be changed in accordance with knitting conditions, thereby adjusting effects of improving finish of a knitted fabric and preventing the loop from being raised upward.
  • reaction force that the jack receives from the movable sinker is orthogonal to the advancing/retreating direction.
  • the reaction force received when the movable sinker is driven does not cause the jack to advance and retreat, so that switching to stop the state where the yarn receive part acts on the loops at the position preceding the non-acting section can keep the action-stop state to the non-acting section, thereby simplifying the configuration of the sinker control cam.
  • Figs. 1 show a schematic cam arrangement of a cam system 10 of a flatbed knitting machine equipped with movable sinkers 4 according to Example 1 of the present invention by Fig. 1(a) , and by Figs. 1(b) and 1(c) show an acting state and a non-acting state of the movable sinker 4 respectively.
  • a knitting needle 3 is accommodated in each of needle grooves provided in parallel on a needle bed (omitted showing by a drawing).
  • the movable sinker 4 arranged between the knitting needles 3 rocks such that a leading end part 4a thereof advances to and retreats from a needle bed gap 5.
  • a fixed sinker 6, which will be described later, is also provided together with the movable sinker 4.
  • the cam system 10 that is mounted on a carriage reciprocating along the needle bed causes the knitting needle 3 to advance to and retreat from the needle bed gap 5.
  • the following describes the case where the carriage runs leftward, and the left side in the drawing corresponds to the preceding side and the right side corresponds to the following side.
  • the running direction of the carriage is rightward, the same operations are performed other than a point that the right side in the drawing corresponds to the preceding side and the left side corresponds to the following side.
  • the cam system 10 includes a sinker control cam 11. As shown in Fig. 1(b) , when the knitting needle 3 holding a loop 7, which will be described later, on a hook 3a provided on a leading end of the knitting needle 3 at the side of the needle bed gap 5 is made to advance to the needle bed gap 5, the sinker control cam 11 causes the leading end part 4a of the movable sinker 4 to rock in a direction of advancing to the needle bed gap 5 and a yarn receive part 4b provided on the leading end part 4a acts on the loop 7 so as to prevent the loop 7 from being raised upward together with the knitting needle 3. Further, as shown in Fig.
  • the sinker control cam 11 sets a non-acting section in which the leading end part 4a of the movable sinker 4 also rocks in a direction of retreating from the needle bed gap 5 and action of the yarn receive part 4b on the loop 7 in the needle bed gap 5 is stopped when the knitting needle 3 is made to retreat from the needle bed gap 5 and so on.
  • the cam system 10 has a needle raising cam 10a, a bridge cam 10b, and stitch cams 10c, 10d, for guiding butts 3b to drive the knitting needles 3.
  • the knitting needle 3 is a compound needle in which a hook 3a is opened and closed by a tongue 3f of a slider 3e, and the cam system 10 has a slider cam 10e guiding a butt 3g to control the slider 3e.
  • the sinker control cam 11 includes a section cam 12 and rising and setting cams 13, 14.
  • the action of the movable sinker 4 on the loop 7 is stopped at the end of an ascent slope of the mountain-shaped cam pattern, so that the section cam 12 can stop the action of the yarn receive part 4b on the loop 7 before a yarn feeding position at which the hook 3a receives supply of a knitting yarn through a yarn feeder port 8, and can start the non-acting section.
  • the non-acting section is started, the non-acting state of the movable sinker 4 continues even if driving by the section cam 12 is finished.
  • the sinker control cam 11 in the present example also includes a sinker cam 11a.
  • the sinker cam 11a has an acting cam part 11c at a following-side position relative to the non-acting section in the running direction of the carriage.
  • the acting cam part 11c By the acting cam part 11c, the movable sinker 4 which passes through to the following side, is made to keep a state of acting on the loop 7.
  • An acting cam part 11b provided at the preceding side switches the movable sinker 4, that is guided from the preceding side, to be in the acting state even when the movable sinker 4 is in an action-stop state, on the other hand, keeps the acting state of the movable sinker that is guided from the preceding side in the acting state.
  • the movable sinker itself could keep the acting state by biasing with a spring, the acting cam parts 11b and 11c might not be provided.
  • the rising and setting cam 13 is provided so as to start driving the butt 9b from a position preceding the start of the non-acting section by the section cam 12 in the running direction of the carriage, that is, a position as indicated by (1) in Fig. 1(a) .
  • the rising and setting cam 13 is made to rise as shown in the drawing, the butt 9b of the sinker jack 9 is driven along the mountain-shaped cam pattern of the rising and setting cam 13 from the indicated position, then the action of the yarn receive part 4b on the loop 7 is stopped from a position at which the action of the movable sinker 4 on the loop 7 is stopped at the end of an ascent slope of the cam pattern to the start of the non-acting section.
  • the sinker control cam 11 has the section cam 12, which controls the movable sinker 4 such that the action of the yarn receive part 4b of the movable sinker 4 on the loop is stopped and it is made into the non-acting state in the non-acting section, and the rising and setting cams 13, 14.
  • the rising and setting cams 13, 14 are provided at both sides as the preceding side and the following side in the running direction of the carriage, which are away from the non-acting section in which the section cam 12 controls the movable sinker 4 to be in the non-acting state.
  • the position at which the rising and setting cam 13 is provided could be set to a position following the acting cam part 11b and preceding the position at which the section cam 12 starts driving the movable sinker 4 to be in the non-acting state in the running direction of the carriage.
  • the section cam 12 starts the non-acting section before the yarn feeding position at which the knitting yarn is supplied from the yarn feeder port 8 to the hook 3a of the knitting needle 3 that has advanced to the needle bed gap 5.
  • the stitch cam 10d drives a butt 3b of the knitting needle 3, and the movement range might be set such that the section cam 12 starts the non-acting section before a yarn catching position at which the hook 3a starts drawing a new loop.
  • the position at which the rising and setting cam 13 is provided could be possible to set to precede a position at which an end part of the section cam 12 at the following side stops at the right end 12b of the movement range.
  • the rising and setting cams 13 are provided at the position (1) and positions (2), (3).
  • the section cams 12 would be provided at both of the left end 12a side and the right end 12b side of the movement range without moving the section cam 12, so as to be made to set at the preceding side and to be made to rise at the following side. That is to say, in case the rising and setting cam 13 would be provided at the position (2), the section cam 12 at the preceding side in the setting state would follow the rising and setting cam 13.
  • the position (3) corresponds to the center of the cam system 10, so that the single rising and setting cam 13 could be provided at an intermediate position between the section cam 12 in the setting state at the preceding side and the section cam 12 in the rising state at the following side.
  • the section cam 12 at the preceding side could be also used as the rising and setting cam 13 without providing the rising and setting cam 13 itself.
  • Figs. 2 show a structure to drive the movable sinker 4 of Figs. 1 in the acting state by Fig. 2(a) and the non-acting state by Fig. 2(b) together with the knitting needle 3 in a simplified manner.
  • a needle bed 1, which will be described later, is inclined so as to be higher at the side of the needle bed gap 5 and lower at the side farther from the needle bed gap 5.
  • description is made while the needle bed 1 is in a horizontal state for the convenience of explanation.
  • the knitting needle 3 in the present example has a needle main body 3c, which has the hook 3a on the leading end thereof at the side of the needle bed gap 5, a needle jack 3d, which has the butt 3b in the vicinity of a tail end thereof and a leading end of the needle jack 3d is connected to the vicinity of a tail end of the needle main body 3c, and the slider 3e.
  • the movable sinker 4 has the yarn receive part 4b, which presses the loop for preventing the loop from being raised upward, and a support receive part 4c, which is provided at a rear side as the direction in which the movable sinker 4 retreats from the needle bed gap 5 so as to be spaced from the leading end part 4a.
  • the movable sinker 4 further has a spring part 4d, which extends to the rear side from the support receive part 4c and is folded back to the side of the needle bed gap 5, and a driving part 4e, which is provided so as to be spaced from the support receive part 4c to the rear side.
  • the spring part 4d is integrally formed with the movable sinker 4 in the present example, a wire spring as a separate body might be combined.
  • the sinker jack 9 has a driving cam part 9a and the butt 9b.
  • the driving cam part 9a does not press the driving part 4e of the movable sinker 4 downward.
  • the leading end part 4a of the movable sinker 4 advances to the needle bed gap 5 by biasing by the spring part 4d, and the yarn receive part 4b is made into an acting state capable of acting on the loop.
  • the driving cam part 9a presses the driving part 4e of the movable sinker 4 downward against the biasing by the spring part 4d.
  • the movable sinker 4 rocks in the counterclockwise direction about the support receive part 4c as a point of support, and is made into the non-acting state where action of the yarn receive part 4a on the loop is stopped.
  • the movable sinker 4 when the sinker jack 9 advances to the side of the needle bed gap 5, the movable sinker 4 is driven so as to be made into the non-acting state.
  • the spring part 4d biases the movable sinker 4 in the direction of making it into the acting state, so that the movable sinker 4 is driven so as to be made into the non-acting state against the biasing by the spring part 4d.
  • reaction force that the driving cam part 9a of the sinker jack 9 receives from the driving part 4e of the movable sinker 4 is in the upward direction in the drawing, which is orthogonal to the advancing/retreating direction.
  • the reaction force that the driving cam part 9a receives is orthogonal to the advancing/retreating direction of the sinker jack and does not therefore cause the sinker jack 9 to advance and retreat.
  • the orthogonality in this case is sufficient when the angle is close to 90 degrees and a component of the reaction force in the advancing/retreating direction is adequately smaller than a component orthogonal to the advancing/retreating direction.
  • the rising and setting cam 13 is made to rise so as to switch the movable sinker 4 to be into the non-acting state at the preceding-side position of the non-acting section, the non-acting state can be kept to the non-acting section.
  • the sinker control cam 11 needs not include a cam or the like for keeping the non-acting state, thereby simplifying the structure of the sinker control cam 11.
  • Figs. 3 to 5 show states where the movable sinker 4 acts as representatives of the positions as indicated by (1), (2), and (3) of Fig. 1(a) , respectively.
  • the needle bed 1 is shown in the horizontal state and a needle bed gap center line 5a, which extends in the vertical direction actually, is shown in an inclined manner.
  • Grooves into which needle plates 21 are inserted are formed on a base plate 20 of the needle bed 1.
  • the needle plates 21 are arranged on the base plate 20 at a constant interval in the direction perpendicular to a page space and the knitting needles 3 are accommodated in portions between the needle plates 21, which serve as needle grooves 2.
  • a wire which becomes a top tooth 22 in the vicinity of the leading end at the side of the needle bed gap 5, and a wire 23 and wires 24 and 25 for fixing the fixed sinker 6 and the needle plate 21 are inserted through the needle plate 21 in the direction perpendicular to the page space.
  • a metal band 26 that presses an upper part of the slider 3e when the slider 3e advances to the side of the needle bed gap 5 is also provided above the movable sinker 4.
  • the fixed sinker 6 is provided at the leading end of the needle bed 1 at the side of the needle bed gap 5, and the movable sinker 4 is required to be in the non-acting state during the stitch determination for forming a new loop.
  • the position at which the rising and setting cam 13 is provided is not limited to the positions as indicated by (1), (2), and (3) of Fig. 1(a) and it might be sufficient that the position precedes the section cam 12.
  • the butt 3b of the needle main body 3c of the knitting needle 3 is at the position (1) of Fig. 1(a) and driving for causing the knitting needle 3 to advance to the needle bed gap 5 by the needle raising cam 10a is not started.
  • the yarn receive part 4b of the movable sinker 4 is made into the non-acting state where the action on the loop 7 is stopped.
  • the movable sinker 4 is in the acting state for the yarn receive part 4b to press the loop 7 so as to make a knitted fabric hard to float.
  • the movable sinker 4 When the rising and setting cam 13 is made to rise and driving of the butt 3g is started at the position of (1), the movable sinker 4 is switched to be in the non-acting state before the knitting needle 3 advances to the needle bed gap 5, so that a risk of yarn breakage can be reduced in the case where a knitting yarn having low strength, which is easily broken, is used, the case where short stitches with small loop lengths are knitted excessively finely, and the like.
  • the section cam 12 provided in the non-acting section can switch the movable sinker 4 to be in the non-acting state.
  • a section in which the rising and setting cam 13 stops the action of the movable sinker 4 preceding the non-acting section can be provided in accordance with knitting conditions as in the case where a knitting yarn having low strength, which is easily broken, is used and the case where short stitches with small loop lengths are knitted excessively finely.
  • Figs. 6 and Fig. 7 show a structure of a main part of the sinker control cam 11 that causes the rising and setting cams 13, 14 of Fig. 1(a) to rise and set while a bracket supporting the structure part and the other components are omitted to show.
  • Figs. 6 show the structure when seen from the side of the needle bed gap 5 and Fig. 7 shows the structure when seen from rear side which is perpendicular to the seeing direction of Figs. 6 .
  • the sinker control cam 11 includes rocking levers 15, 16, springs 17, 18, and a driving source 19. It should be noted that in Fig. 6(a) , the springs 17, 18 are omitted to show.
  • the rocking levers 15, 16 include points of support 15b, 16b at positions closer to an intermediate position between the rising and setting cams 13, 14 at both sides in the running direction of the carriage, support the rising and setting cams 13, 14 by arms 15a, 16a extending from the points of support 15b, 16b, and rock about the points of support 15b, 16b, respectively. As shown in Fig.
  • the springs 17, 18 are provided between the vicinities of the leading ends of the arms 15a, 16a of the rocking levers 15, 16 at both sides of the rising and setting cams 13, 14 and bias the rocking levers 15, 16 so that the rocking levers 15, 16 rock about the points of support 15b, 16b and causes the rising and setting cams 13, 14 to rise, and the leading end part 4a of the movable sinker 4 does not act on the loop 7.
  • the single driving source 19 performs driving of switching the leading end part 4a of the movable sinker 4 to be made into the acting state on the loop 7 by rocking the rocking levers 15, 16 at both sides so as to cause the rising and setting cams 13, 14 to set.
  • the driving source 19 in the present example is formed by solenoid and drives the rocking levers 15, 16 through a rocking piece 19a and a sliding plate cam 19b, which construct a transmission mechanism for transmitting output of the driving source 19.
  • the rocking piece 19a rocks with output from a plunger of the solenoid as the driving source 19 and the sliding plate cam 19b moves in the right and left direction in the drawing.
  • Driving parts 15c, 16c extending to the side of the sliding plate cam 19b from the points of support 15b, 16b are provided on the rocking levers 15, 16, respectively, and followers 15d, 16d that are provided at the leading ends thereof abut against projections of a cam face 19c provided on the sliding plate cam 19b.
  • One of the followers 15d, 16d might be made to abut against the recess and the other thereof might be made to abut against the projection by changing the shape of the cam face 19c, so that one of the rising and setting cams 13, 14 could be switched to rise whereas the other of them could be switched to set.
  • the rising and setting cams 13, 14 only the preceding side thereof might be made to rise in the running direction of the carriage and the following side thereof might be made to set. It should be noted that even when the state of the rising and setting cam 14 would be switched, the movable sinker 4 that has been already made into the non-acting state would not be influenced because the rising and setting cam 14 is located at the following side relative to the section cam 12. Accordingly, even when the rising and setting cams 13, 14 might be switched to rise and set at the same time, only the preceding side thereof would switch the movable sinker 4 to be in the non-acting state from the acting state and the following side thereof would not influence thereon.
  • the same functions can be realized with another structure in which a motor is used as the driving source 19, a rack is provided on the sliding plate cam 19b, and a pinion is attached to an output shaft of the motor so as to drive the sliding plate cam 19b, or the like. Further, when the driving source 19 might be provided on each of the rising and setting cams 13, 14, only the rising and setting cams 13, 14 at the side preceding the section cam 12 could be made to rise.
  • Fig. 8 shows a schematic cam arrangement of a cam system 30 of a flatbed knitting machine equipped with the movable sinkers 4 according to Example 2 of the present invention.
  • a sinker control cam 31 included in the cam system 30 does not include the section cam 12 and the rising and setting cams 13, 14 of the sinker control cam 11 in Fig. 1(a) but includes a moving cam 32.
  • the moving cam 32 in the present example is provided with a movement mechanism capable of using a section larger than the non-acting section in which the section cam 12 is provided as the non-acting section and a driving source, and can move to a position preceding the non-acting section in the running direction of the carriage.
  • the non-acting section in the present example is set as a section including a yarn catching position at which the stitch cam 10d drives the butt 3b of the knitting needle 3 and drawing of the new loop by the hook 3a is started.
  • a position that is the same as the section cam 12 in Fig. 1 may be set as the non-acting section.
  • Representatives of positions preceding the non-acting section to which the moving cam 32 can be moved are indicated by (1), (2), (3), and (4).
  • control to stop the action of the yarn receive part 4b of the movable sinker 4 on the loop 7 could be switched.
  • the position of the moving cam 32 could be moved, thereby adjusting effects of improving finish of a knitted fabric and preventing the loop from being raised upward in accordance with the knitting conditions such as knitting yarns to be used and stitches to be formed.
  • Fig. 9 shows a state where the movable sinker 4 is made to act even at the yarn feeding position, at which the knitting yarn is supplied to the hook 3a through the yarn feeder port 8, and has started retreating after advanced to the needle bed gap 5 at the position as indicated by (4) in Fig. 8 .
  • the action states of the movable sinker 4 at the positions (1), (2), and (3) in Fig. 8 are the same as those in Fig. 3 , Fig. 4 , and Fig. 5 , respectively.
  • the movable sinker 4 in the present example does not disturb the yarn feeding and can be therefore made to act so as to press the old loop 7a by the yarn receive part 4b also during the yarn feeding at the position in Fig. 1(a) corresponding to (4) of Fig.
  • the movable sinker 4 might be made to act also when the hook 3a that would have advanced to the needle bed gap 5 would be made to retreat from the needle bed gap 5 at the positions (3), (4), deviation of the old loop 7a from the tongue 3f of the slider 3e and return of the old loop 7a onto the hook 3a could be prevented. Further, in case latch needles might be used, the leading end of the latch, that would have opened when the old loop 7a would be cleared, could be prevented from interfering in the old loop 7a. However, when there might be difficulty in the yarn feeding depending on the shapes of the movable sinker 4, the movable sinker 4 should be required to be made into the non-acting state.
  • the loop 7 should be pressed reliably by once making the movable sinker 4 into the non-acting state during the yarn feeding and the yarn catching, and making the movable sinker 4 into the acting state before the stitch determination.
  • the present invention can be applied regardless of shapes, driving methods, and presence and absence of the springs as long as the movable sinker 4 has the function to prevent the loops from being raised upward together with the knitting needles.
  • a cam, a stopper, or the like might be added so as to keep the non-acting state.
  • the present invention can be applied not only to stitch formation but also to stich transfer.
  • the knitting needle not only the compound needle opening and closing the hook 3a by the slider 3e but also the latch needle opening and closing the hook by the latch can be used.
  • the invention can be applied not only to the flatbed knitting machine having two beds in which a pair of needle beds 1 form a front bed and a rear bed so as to oppose each other with the needle bed gap 5 interposed therebetween but also to a flatbed knitting machine having four beds at upper and lower two stages and a flatbed knitting machine having an auxiliary bed.

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

Claims (5)

  1. Machine à tricoter à plat munie de platines mobiles (4), chacune pouvant avancer et reculer par rapport à un intervalle entre fontures (4) et étant agencée entre des aiguilles à tricoter (3) logées dans des gorges d'aiguilles (2), prévues sur des fontures (1) en parallèle,
    comportant un système de cames (10, 30), monté sur un chariot destiné à aller et venir le long de la fonture (1), pour amener les aiguilles à tricoter (3) à avancer et reculer par rapport à l'intervalle entre fontures (5),
    et qui comprend une came de commande de platine (11, 31) pour réaliser un contrôle de telle sorte que :
    lorsqu'on fait avancer une aiguille à tricoter (3), tenant une boucle (7) sur un crochet (3a) prévu au niveau d'une extrémité avant de l'aiguille à tricoter (3) au niveau du côté de l'intervalle entre fontures (5), vers l'intervalle entre fontures (5), on fait avancer la platine mobile (4) vers l'intervalle entre fontures (5) et on actionne une partie de réception de fil (4b) prévue sur une partie d'extrémité avant (4a) de la platine mobile (4) au niveau du côté de l'intervalle entre fontures (5) sur la boucle (7), de façon à empêcher la boucle (7) d'être soulevée conjointement avec les aiguilles à tricoter (3) ; et
    lorsqu'on fait reculer l'aiguille à tricoter (3) par rapport à l'intervalle entre fontures (5), on établit une section de non actionnement, dans laquelle la partie d'extrémité avant (4a) de la platine mobile (4) recule aussi par rapport à l'intervalle entre fontures (5) et l'action de la partie de réception de fil (4b) sur la boucle (7) dans l'intervalle entre fontures (5) est stoppée,
    caractérisé en ce que la came de commande de platine (11, 31) comprend une came (13, 14 ; 32) capable de commuter, au niveau d'une position précédant le début de la section de non actionnement dans une direction de course du chariot, entre amener la platine mobile (4) à conserver un état dans lequel la partie de réception de fil (4b) agit sur la boucle (7), ou à arrêter l'action à partir de cette position jusqu'au début de la section de non actionnement.
  2. Machine à tricoter à plat munie de platines mobiles (4) selon la revendication 1, dans laquelle la came de commande de platine (11) comprend :
    une came de section (12) réalisant un contrôle tel que l'action de la partie de réception de fil (4b) de la platine mobile (4) est arrêtée dans la section de non actionnement ; et
    des cames de levée et de mise en place (13, 14) prévues à des positions situées à la fois au niveau du côté précédent et d'un côté suivant éloigné de la section de non actionnement dans la direction de course du chariot pour être des cames capables de commuter entre arrêter ou ne pas arrêter l'action de la partie de réception de fil (4b) par leur montée et leur mise en place.
  3. Machine à tricoter à plat munie de platines mobiles (4) selon la revendication 2, dans laquelle la came de commande de platine (11) comprend :
    des leviers basculants (15, 16) ayant des points de support (15b, 16b) à des positions proches d'une position intermédiaire entre les cames de montée et de mise en place (13, 14) au niveau des deux côtés dans la direction de course du chariot, supportant les cames de montée et de mise en place (13, 14) par des bras (15a, 16a) s'étendant à partir des points de support (15b, 16b), et basculant autour des points de support (15b, 16b) ;
    des ressorts (17, 18) prévus sur les deux leviers basculants (15, 16), et sollicitant les leviers basculants (15, 16) de telle sorte que les leviers basculants (15, 16) basculent autour des points de support (15b, 16b) provoquant la montée des cames de montée et de mise en place (13, 14), et la partie de réception de fil (4b) de la platine mobile (4) pour arrêter l'action de la partie de réception de fil (4b) de la platine mobile (4) sur la boucle (7) ;
    une unique source d'entraînement (19) capable de commuter pour ne pas arrêter l'action de la partie de réception de fil (4b) sur la boucle (7) en faisant basculer les leviers basculants des deux côtés (15, 16) de façon à amener les cames de montée et de mise en place (13, 14) à se mettre en place contre la sollicitation des ressorts (17, 18) ; et
    un mécanisme de transmission (19a, 19b) pour transmettre la force d'entraînement générée par la source d'entraînement (19) vers les leviers basculants des deux côtés (15, 16).
  4. Machine à tricoter à plat munie de platines mobiles (4) selon la revendication 1,
    dans laquelle la came de commande de platine (31) comprend une came mobile (32) capable d'un déplacement entre la position précédant le début de la section de non actionnement et la section non actionnement pour être une came capable de commuter entre arrêter ou ne pas arrêter l'action de la partie de réception de fil (4b).
  5. Machine à tricoter à plat munie de platines mobiles (4) selon l'une quelconque des revendications 1 à 4,
    dans laquelle la platine mobile (4) est sollicitée par un ressort (4d) de sorte que la partie de réception de fil (4b) bascule dans une direction d'action sur la boucle (7),
    la came de commande de platine (11, 31) contrôle la platine mobile (4) par l'intermédiaire d'un élément (9) pour avancer et reculer dans une direction d'avance/recul de l'aiguille à tricoter (3) par rapport à l'intervalle entre fontures (5), et
    l'élément (9) entraîne la platine mobile (4) dans une direction orthogonale à la direction d'avance/recul de façon un amener la platine mobile (4) à basculer dans une direction pour arrêter l'action de la partie de réception de fil (4b) sur la boucle (7).
EP16154106.5A 2015-02-03 2016-02-03 Machine a tricoter a plateau equipe d'une platine mobile Active EP3054041B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015019802A JP6177263B2 (ja) 2015-02-03 2015-02-03 可動シンカーを備える横編機

Publications (2)

Publication Number Publication Date
EP3054041A1 EP3054041A1 (fr) 2016-08-10
EP3054041B1 true EP3054041B1 (fr) 2017-07-19

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EP (1) EP3054041B1 (fr)
JP (1) JP6177263B2 (fr)
KR (1) KR101773765B1 (fr)
CN (1) CN105839283B (fr)

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CN108589000B (zh) * 2018-03-21 2023-09-26 浙江丰帆数控机械有限公司 一种针织横机
CN109537154B (zh) * 2019-01-16 2023-09-12 宁波博日机械有限公司 一种电脑横机的信克装置

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DE3609539A1 (de) 1986-03-21 1987-10-01 Stoll & Co H Zweibettige flachstrickmaschine mit zwischen den nadeln angeordneten platinen
JPH0641943B2 (ja) 1988-06-29 1994-06-01 日揮メンテナンス株式会社 管体の欠陥検査方法
JPH03206161A (ja) 1989-12-28 1991-09-09 Shima Seiki Seisakusho:Kk 横編機におけるシンカー装置
JP3163602B2 (ja) 1991-09-20 2001-05-08 ソニー株式会社 映像ディスプレイ装置
JP2700204B2 (ja) 1992-12-15 1998-01-19 株式会社島精機製作所 横編機におけるシンカー装置
KR100768348B1 (ko) * 2000-12-04 2007-10-18 가부시키가이샤 시마세이키 세이사쿠쇼 횡편기
JP4175977B2 (ja) 2003-07-30 2008-11-05 株式会社島精機製作所 可動シンカーを備える横編機
CN100564634C (zh) * 2007-05-18 2009-12-02 孙平范 针织横机的沉降片控制机构
CN201835069U (zh) * 2010-10-28 2011-05-18 宁波慈星股份有限公司 沉降片控制装置
EP2570531B1 (fr) * 2011-09-15 2014-03-05 Pai Lung Machinery Mill Co., Ltd. Mécanisme de maille pressant vers le bas et sa platine pour machines de tricotage rectiligne
JP2013139644A (ja) * 2011-12-28 2013-07-18 Shima Seiki Mfg Ltd 横編機のシンカー装置
JP6161375B2 (ja) 2013-04-08 2017-07-12 株式会社島精機製作所 可動シンカーを備える横編機

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Also Published As

Publication number Publication date
CN105839283B (zh) 2017-12-01
JP6177263B2 (ja) 2017-08-09
KR101773765B1 (ko) 2017-09-01
JP2016141910A (ja) 2016-08-08
KR20160095627A (ko) 2016-08-11
CN105839283A (zh) 2016-08-10
EP3054041A1 (fr) 2016-08-10

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