Movable sinker device of flat knitting machine and movable sinker

Abstract

The utility model provides a movable sinker device of a flat knitting machine and a movable sinker, in which the front end part which advances and retreats relative to a tooth opening does not cross over an opposite needle bed side, and the interval of the tooth opening does not need to be enlarged. The bottom part of the sinker groove is provided with a convex part, and the convex part changes the abutting position from the flat section to the concave section when the front end part enters the tooth opening. A section where the flat section abuts against the protruding portion is a linear motion section in which the movable sinker is guided in a linear motion manner. When the convex part abuts against the concave section, a swing section is formed. The bottom of the movable sinker and the sinker groove form an advance and retreat guide mechanism with a linear motion section and a swing section. Even if the front end portion advances and retreats relative to the tooth opening through linear motion, pushing and pressing of the old stitch by the knitting yarn receiving portion are carried out through swinging, and therefore the old stitch does not cross the opposite needle bed side even if the interval of the tooth opening is not enlarged.

Description

Technical Field

[0001] The utility model relates to a movable sinker which is arranged on a flat knitting machine for knitting fabrics at tooth openings between opposite needle beds, and has a coil forming edge and a knitting yarn receiving part for pushing the knitting yarn of the old coil toward the bottom of the tooth opening at the front end portion which advances and retreats relative to the tooth opening. Background Art

[0002] Conventionally, it is known that a flat knitting machine in which at least a pair of needle beds are arranged opposite to each other across a tooth gap is provided with a movable sinker having a coil forming edge for hooking a sinker arc when a new coil is formed and a knitting yarn receiving portion for pushing the knitting yarn of the old coil that has been unstitched toward the lower side of the tooth gap (for example, refer to Patent Documents 1 and 2 based on the present applicant). The movable sinker of Patent Document 1 is provided between the knitting needles accommodated in the needle grooves of the needle bed, and is used together with a mechanism for making the front end portion having the knitting yarn receiving portion move forward and backward relative to the tooth gap by swinging in a circular arc-shaped trajectory. The movable sinker of Patent Document 2 is equipped in a glove knitting machine, and the movable sinker accommodated in a sinker seat inclined relative to the needle bed moves forward and backward relative to the tooth gap by linear motion in a linear trajectory.

[0003] [Prior art literature]

[0004] [Patent Literature]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2011-094266

[0006] [Patent Document 2] Japanese Patent Application Publication No. 2019-073819 Utility Model Content

[0007] [Issues to be Solved by the Utility Model]

[0008] The movable sinker with linear motion as in Patent Document 2 will go over the center of the front and rear of the tooth opening and enter the opposite needle bed side when the knitting yarn receiving part is intended to increase the pushing amount of the knitting yarn. In order to prevent it from going over, the interval between the tooth openings needs to be enlarged, but when the knitting needles of the front and rear needle beds are used for starting or knitting rib structures, the increase in the density of the coils by shortening the interval between the coils is invalid. The movable sinker with swinging motion as in Patent Document 1 can avoid going over, but the components such as the coil forming edge and the knitting yarn receiving part move along a trajectory corresponding to the radius from the swing fulcrum, which is restricted.

[0009] The utility model aims to provide a movable sinker device and a movable sinker of a flat knitting machine, wherein the front end portion advancing and retreating relative to the tooth gap will not pass to the opposite needle bed side, and there is no need to expand the tooth gap interval.

[0010]

Methods for solving the problem

[0011] The utility model relates to a movable sinker device of a flat knitting machine, wherein the flat knitting machine is a flat knitting machine in which at least one pair of needle beds are arranged opposite to each other across a tooth gap.

[0012] The movable sinker device accommodates the movable sinker in a sinker groove extending in a direction of advancing and retreating relative to the tooth gap, so that the front end portion advances and retreats relative to the tooth gap.

[0013] The front end of the movable sinker has a loop forming edge and a knitting yarn receiving portion. The loop forming edge is hooked by the sinker arc when a new loop is formed, and the knitting yarn receiving portion captures the knitting yarn of the old loop that has been unhooked and pushes it below the tooth mouth.

[0014] The movable sinker is driven in conjunction with the knitting of the knitted fabric at the tooth mouth.

[0015] It is characterized in that

[0016] The movable sinker device has an advance and retreat guide mechanism, which guides the advance and retreat of the movable sinker.

[0017] The advance and retreat guide mechanism is arranged between the movable sinker and the sinker groove.

[0018] The advance and retreat guide mechanism comprises:

[0019] In the linear motion section, the movable sinker is linearly moved in such a way that the front end thereof forms a linear trajectory; and

[0020] The swing section is provided at the terminal end of the linear motion section for entering the tooth gap by the linear motion, and swings the movable sinker so that the front end portion of the driven movable sinker follows an arc-shaped trajectory.

[0021] In addition, in the present invention, it is characterized in that, with one of the bottom of the movable sinker and the bottom surface of the sinker groove as a reference plane, the advance and retreat guide mechanism includes a flat section and a concave section formed on the other side and a convex portion protruding from the reference plane to the other side,

[0022] With respect to the height of the convex portion protruding from the reference plane to the other side, the height from the reference plane to the flat section on the other side is smaller, and the height from the reference plane to the top of the concave section on the other side is the same or greater,

[0023] In the linear motion section, the convex portion abuts against the flat section, and the flat section is parallel to the reference plane.

[0024] In the swinging section, the convex portion is engaged with the concave portion.

[0025] In addition, in the present invention, it is characterized in that the sinker groove is provided on a sinker seat different from the needle bed.

[0026] Furthermore, the present invention is characterized by comprising a spring for applying force to the movable sinker so that the knitting yarn receiving portion of the front end portion pushes the old loop below the tooth gap due to the swinging.

[0027] The utility model is a movable sinker of a flat knitting machine, which is used when a new loop is formed in a flat knitting machine in which at least one pair of needle beds are arranged opposite to each other across a tooth gap, and can make the front end portion advance and retreat relative to the tooth gap, and is used in a state of being accommodated in a sinker groove extending in the direction of advancing and retreating relative to the tooth gap, wherein the front end portion has a loop forming edge and a knitting yarn receiving portion, the loop forming edge is hooked by the sinker arc, and the knitting yarn receiving portion receives the knitting yarn of the old loop that has been unhooked and pushes it below the tooth gap,

[0028] It is characterized in that

[0029] A convex portion is provided at the bottom of the sinker groove.

[0030] When being received in the sinker trough, the movable sinker faces the bottom of the sinker trough.

[0031] The movable sinker has:

[0032] The flat section is formed at the front end side in a manner that is spaced apart from the bottom surface of the sinker groove by a distance smaller than the height of the convex portion, and is guided in a manner that abuts against the convex portion and moves linearly; and

[0033] The concave section is concave to a height that is the same as or greater than the height of the convex section at an end portion of the flat section in a direction away from the front end portion.

[0034] [Effect of utility model]

[0035] According to the utility model, even if the front end portion of the movable sinker device of the flat knitting machine advances and retreats relative to the tooth gap in a linear motion, the knitting yarn of the old coil generated by the knitting yarn receiving part is pushed toward the bottom of the tooth gap by swinging, so even if the tooth gap interval is not expanded, the front end portion will not pass to the opposite needle bed side.

[0036] Furthermore, according to the present invention, the advance and retreat guide mechanism is provided between the bottom of the movable sinker and the bottom surface of the sinker groove accommodating the movable sinker, so that the linear motion section and the swing section can be easily provided.

[0037] Furthermore, according to the present invention, the movable sinker is accommodated in the sinker groove provided in the sinker seat different from the needle bed, so that the advance and retreat guide mechanism can be easily provided, and assembly and replacement become easy.

[0038] Furthermore, according to the present invention, the yarn receiving portion of the movable sinker pushes the yarn of the old loop below the tooth gap by the spring force, and the reaction force that pushes up the old loop can also be absorbed by the spring.

[0039] Furthermore, according to the present invention, the movable sinker moves between linear motion and swinging when advancing and retreating relative to the needle bed gap, so that even if the interval between the needle bed gaps is not increased, the front end portion can be prevented from passing over the opposite needle bed side. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a right side sectional view showing a schematic structure of a movable sinker device 10 of a flat knitting machine 1 as an embodiment of the present invention.

[0041] Figures 2(a) to 2(d) show Figure 1 A right side view of the structure and action of the movable sinker 11.

[0042] Figure 3 Yes means Figure 1 A front view of the structure of a sinker cam 14 included in the movable sinker device 10.

[0043] Figure 4 Yes means Figure 1 A side view showing shapes of main components of the flat knitting machine 1.

[0044] Figure 5 Yes means Figure 1 A partial front view of the structure of the needle bed 2 on the tooth gap 3 side of the flat knitting machine 1.

[0045] Figure 6 Yes means Figure 1 A partial front view of an example of the operation of the movable sinker device 10 in the flat knitting machine 1.

[0046] Figure 7 Yes means Figure 1 The flat knitting machine 1 Figure 6 A partial front view of the movement of the knitting needle 4 linked to the movement of the movable sinker device 10.

[0047] Figure 8 (a) and Figure 8 (b) show the Figure 6 A partial side cross-sectional view of the operating state of the movable sinker device 10 corresponding to the phases a and b.

[0048] Figure 9(c) and Figure 9(d) show the Figure 6 A partial side cross-sectional view of the operating state of the movable sinker device 10 corresponding to the phases of c and d.

[0049] Figure 10(e) and Figure 10(f) show the Figure 6A partial side cross-sectional view of the operating state of the movable sinker device 10 corresponding to the phases of e and f.

[0050] [Description of Reference Numerals]

[0051] 1 Flat knitting machine

[0052] 2 Needle bed

[0053] 2a Needle slot

[0054] 3 teeth

[0055] 3a Center

[0056] 4 knitting needles

[0057] 4a Needle hook

[0058] 5 Needle plate

[0059] 9 Yarn feeding port

[0060] 10 Movable sinker device

[0061] 11 Movable sinker

[0062] 11a Front end

[0063] 11aa Coil forming edge

[0064] 11ab Knitting yarn receiving unit

[0065] 11b Spring

[0066] 11c Enter the drive unit

[0067] 11d Exit drive unit

[0068] 11e Flat interval

[0069] 11f Concave interval

[0070] 12 Sinker Seat

[0071] 13 Sinking plate tank

[0072] 13a convex part

[0073] 13b Bottom

[0074] 14 Sinker triangle

[0075] 20 Triangle system

[0076] 21 Circle triangle DETAILED DESCRIPTION

[0077] the following, Figure 1 to Figure 10 (f) represents the structure and operation related to the movable sinker device 10 and the flat knitting machine 1 as one embodiment of the present invention. The corresponding parts in each figure are marked with the same reference numerals, and repeated descriptions are sometimes omitted. In addition, for the sake of convenience, parts not recorded in the figure of the description object are sometimes marked with reference numerals recorded in other figures.

[0078] [Example 1]

[0079] Figure 1 The schematic structure of the movable sinker device 10 of the flat knitting machine 1 as an embodiment of the utility model is shown. In the flat knitting machine 1, at least a pair of needle beds 2 are arranged opposite to each other with a tooth gap 3 therebetween. A needle groove 2a for accommodating the knitting needle 4 is provided on each needle bed 2. The needle groove 2a is formed between needle plates 5 that are upright on the needle bed 2. A thin-walled portion 5a for accommodating the yarn guide 6 is provided on the needle plate 5. Between the needle plates 5, the space above the knitting needle 4 is filled with a needle spacer 7. In a direction perpendicular to the paper surface of the accompanying drawing, the partially shown triangular seat slide 8 moves to link the yarn feed port 9. The yarn feed port 9 supplies knitting yarn to the needle hook 4a provided at the front end of the knitting needle 4 entering the tooth gap 3 to form a coil. On the knitting needle 4, a transfer piece 4b is also provided on the needle bar. If the tooth mouth 3 is made to enter the transfer piece 4b, the needle hook 4a of the knitting needle 4 of the opposite needle bed 2 can pass over the center 3a and enter the transfer piece 4b to transfer the stitches. The movable sinker device 10 has a movable sinker 11. The movable sinker 11 is accommodated in the sinker groove 13 of the sinker seat 12 which is set separately from the needle bed 2, and can move between the states shown by the solid line, the single dotted line and the double dotted line. The triangular seat slide 8 is equipped with a triangle system for driving the knitting needle 2, but its illustration is omitted in this figure. The triangular seat slide 8 is equipped with a sinker triangle 14 for driving the movable sinker 11.

[0080] In Figure 2(a) to Figure 2(d), Figure 2(a) shows Figure 1 FIG. 2( b ), FIG. 2( c ) and FIG. 2( d ) show the structure of the movable sinker 11. Figure 1The actions corresponding to the states represented by the solid lines, dot-dash lines and double dot-dash lines. As shown in FIG2 (a), the front end portion 11a of the movable sinker 11 has a coil forming edge 11aa and a knitting yarn receiving portion 11ab. On the coil forming edge 11aa, a sinking arc is applied when a new coil is formed. The knitting yarn receiving portion 11ab captures the knitting yarn of the old coil that has been unhooked and pushes it downwardly to the tooth mouth. The force applied in the direction of pushing the front end portion 11a is performed by an integrally formed spring 11b. A wire spring or the like may also be provided separately. The drive for causing the front end portion 11a to enter the tooth mouth 3 is performed on the entry drive portion 11c. The drive for causing the front end portion 11a to exit from the tooth mouth 3 is performed on the exit drive portion 11d. The bottom of the movable sinker 11 has a flat section 11e, a concave section 11f, a bottom front end 11g, and an arc-shaped portion 11h. The arc-shaped portion 11h, together with the top 11i of the exit driving portion 11d, is provided as a part of an arc 11k of a certain radius starting from the center 11j of the arc, so that even if the movable sinker 11 moves linearly or swings, the contact between the bottom surface 13b of the sinker groove 13 and the triangle driving the exit driving portion 11d can be maintained.

[0081] like Figure 1As shown in FIG. 2 , the movable sinker 11 is used in a state where it is accommodated in a sinker groove 13 extending in a direction of advance and retreat relative to the tooth gap 3. As shown in FIG. 2 (b), FIG. 2 (c) and FIG. 2 (d), a convex portion 13a is provided at the bottom of the sinker groove 13, and when the front end portion 11a enters the tooth gap 3, the convex portion 13a changes the position of contact with the flat section 11e to the concave section 11f. The convex portion 13a is a form in which a steel wire passing through in a direction perpendicular to the paper surface is engaged with a groove formed on the flat bottom surface 13b to support it. It can also be a form in which a part of the bottom surface 13b protrudes. As shown in FIG. 2 (b) to FIG. 2 (c), in a state in which the convex portion 13a contacts the flat section 11e, the movable sinker 11 is guided to move linearly. The arc-shaped portion 11h at the bottom of the movable sinker 11 is supported by the bottom surface 13b, and the flat section 11e is parallel to the bottom surface 13b. The coil forming edge 11aa is also parallel to the bottom surface 13b. As shown in FIG2(d), in the state where the convex portion 13a is in contact with the concave section 11f, the bottom front end 11g and the arc-shaped portion 11h of the bottom of the movable sinker 11 are supported by the bottom surface 13b. In addition, the height of the flat section 11e from the bottom surface 13b is less than the height of the convex portion 13a. The concave section 11f is recessed relative to the bottom of the movable sinker 11 to a height that is the same as or greater than the height of the convex portion 13a from the bottom surface 13b of the sinker groove 13. After FIG2(c), the convex portion 13a begins to fit into the concave section 11f and reaches FIG2(d), and the movable sinker 11 is guided in a swinging manner. Regarding the movable sinker 11 of the movable sinker device 10 of the present embodiment, even if the front end portion 11a moves forward and backward relative to the tooth gap 3 in a linear motion, the knitting yarn of the old coil is pushed toward the bottom of the tooth gap 3 by the knitting yarn receiving portion 11ab by swinging, so even if the interval of the tooth gap 3 is not expanded, the front end portion 11a will not pass over the center 3a of the tooth gap 3 to the opposite needle bed 2 side.

[0082] Figure 3 express Figure 1The structure of the sinker cam 14 included in the movable sinker device 10 is shown in FIG. The sinker cam 14 includes an entry cam surface 14a acting on the entry drive portion 11c of the movable sinker 11, an exit cam surface 14b acting on the exit drive portion 11d, a moving cam surface 14c, and an emerging cam surface 14d. As shown in the cross section AA, the moving cam surface 14c is formed to be able to slide and move, and when it acts on the exit drive portion 11d of the movable sinker 11, it moves in the direction opposite to the travel direction of the cam carriage 8 by the reaction force from the exit drive portion 11d. The emerging cam surface 14d is an actuator such as a solenoid, and can switch between a protruding state acting on the exit drive portion 11d and a retracted state in which it does not act. When the emerging cam surface 14d is made into a protruding state, when the cam carriage 8 is disengaged, the movable sinker 11 is in a retracted state, and the front end portion 11a is retracted from the tooth gap 3. In the flat knitting machine 1 used for glove knitting, the looper device described in Patent Document 2 is also used in the tooth mouth 3, so the front end portion 11a needs to be retracted. If the retracting cam surface 14d is made to be retracted, when the cam carriage 8 is disengaged, the movable sinker 11 is forced by the spring to maintain the state of pushing the old coil, and the reaction force of lifting the old coil can also be absorbed by the spring 11b.

[0083] Figure 4 Indicate as Figure 1 The main components of the flat knitting machine 1 are the needle spacer 7, the yarn guide 6, the needle plate 5, the knitting needle 4, and the shape of the needle bed 2. The needle plate 5 is erected at a certain interval in the direction perpendicular to the paper surface and is set on the needle bed 2. The needle plate 5 and the needle bed 2 also have steel wires 2b, 2c, 5c and a steel belt 5b that pass through in the direction perpendicular to the paper surface.

[0084] Figure 5 exist Figure 1 In the flat knitting machine 1, the structure of the needle bed 2 on the tooth gap 3 side is shown with the needle spacer 7 removed. The sinker seat 12 that accommodates the movable sinker 11 is also omitted from the figure, and only the front end 11a is shown. The yarn guide 6 guides the knitting yarn at the portion protruding toward the tooth gap 3.

[0085] Figure 6 An example of the operation of the movable sinker device 10 is shown. Figure 7 Representation and Figure 6 The knitting needle 4 is linked to the movement of the movable sinker device 10. The representative movement states are represented by the phases of a, b, c, d, and e. The knitting needle 4 is acted upon by the cam system 20 mounted on the cam carriage 8 and performs the knitting movement. The cam system 20 includes a knitting cam 21 related to the knitting movement and a knitting transfer cam 22 related to the knitting transfer movement, but only the loop forming movement in the knitting movement is shown.

[0086] Figures 8(a) and 8(b), Figures 9(c) and 9(d), Figures 10(e) and 10(f) respectively show the Figure 6 The operating state of the movable sinker device 10 corresponding to the phases a and b, the phases c and d, and the phases e and f of FIG. However, the knitting yarn is omitted from the figure. In the phase a, the front end portion 11a is temporarily withdrawn from the tooth gap 3 to release the push of the knitting yarn receiving portion 11ab on the knitting yarn. In the phase b, the knitting yarn receiving portion 11ab is made to enter the tooth gap 3 by swinging from a linear motion to reliably push the knitting yarn. The knitting needle 4 enters the tooth gap 3 by the action of the knitting cam 21, and the coil held by the needle hook 4a moves relatively away from the needle hook 4a as an old coil and moves toward the needle bar side. In the phase c, in order to receive the knitting yarn from the yarn feed port 9 to the needle hook 4a, the front end portion 11a is withdrawn from the tooth gap 3. In the phase d, when the needle hook 4a that receives the knitting yarn from the yarn feed port 9 is pulled from the tooth gap 3 to the needle bed 2 side to determine the stitch density, the knitting yarn of the old coil is captured by the knitting yarn receiving portion 11ab that enters the tooth gap 3. In the phase of e, the yarn receiving part 11ab is temporarily retracted to release the captured loop from the yarn receiving part 11ab. In the phase of f, the yarn receiving part 11ab captures the new sinking loop formed in the phase of d. If the emerging and retracting cam 14d is made to sink after the phase of f, the yarn receiving part 11ab can be separated from the cam carriage 8 while pushing the sinking loop.

[0087] In addition, in the present embodiment, a flat section 11e and a concave section 11f are provided at the bottom of the movable sinker 11, and a convex section 13a is provided on the bottom surface 13b of the sinker groove 13, so that the movable sinker 11 can move forward and backward relative to the tooth gap 3 through linear motion and swinging. The bottom surface 13b becomes a reference plane relative to the protruding height of the convex section 13a or the height to the flat section 11f. In contrast, it is also possible to provide a convex section on the movable sinker and to provide a flat section and a concave section in the sinker groove. In this case, the bottom of the movable sinker excluding the convex section becomes a reference plane, and in the linear motion section, it is parallel to the flat section on the sinker groove side and maintains a certain interval. In addition, the concave section of the sinker groove is provided at the end of the flat section on the tooth gap 3 side. That is, with one of the bottom of the movable sinker 11 and the bottom surface 13b of the sinker groove 13 as a reference plane, the flat section 11e and the concave section 11f formed on the other side and the convex section 13a protruding from the reference plane to the other side function as an advance and retreat guide mechanism for guiding the advance and retreat of the movable sinker 11. The section where the convex section 13a abuts against the flat section 11e becomes a linear motion section for linearly moving the movable sinker 11 in such a manner that the front end 11a becomes a linear trajectory parallel to the reference plane. The section where the convex section 13a fits into the concave section 11f is provided at the terminal end of the linear motion section that enters the tooth gap 3 by linear motion, and becomes a swing section for swinging the movable sinker 11 in such a manner that the front end 11a of the driven movable sinker 11 becomes an arc-shaped trajectory. Relative to the height of the convex portion 13a protruding from the reference plane to the other side, the height from the reference plane to the flat section on the other side is smaller, and the height from the reference plane to the top of the concave section on the other side is the same or larger. In addition, the movable sinker 11 is accommodated in the sinker groove 13 of the sinker seat 12, but it can also be arranged in parallel with the knitting needles on the needle bed as in Patent Document 1. In Patent Document 1, the swinging movable sinker is accommodated in a thin-walled portion provided on the needle plate. Moreover, the advance and retreat guide mechanism can also be formed between the guide triangle formed on the side of the sinker groove and the pin protruding laterally from the movable sinker and receiving the action of the guide triangle.

Claims

1. A movable sinker device (10) of a flat knitting machine (1), wherein the flat knitting machine (1) is a flat knitting machine in which at least one pair of needle beds (2) are arranged opposite to each other with a tooth gap (3) interposed therebetween. The movable sinker device (10) accommodates the movable sinker (11) in a sinker groove (13) extending in a direction of advancement and retreat relative to the tooth gap (3) so that the front end portion (11a) advances and retreats relative to the tooth gap (3). The front end portion (11a) of the movable sinker (11) has a loop forming edge (11aa) and a knitting yarn receiving portion (11ab). The loop forming edge (11aa) is hooked by the sinker loop when a new loop is formed, and the knitting yarn receiving portion (11ab) captures the knitting yarn of the old loop that has been unhooked and pushes it downward toward the tooth opening (3). It is characterized in that The movable sinker device (10) has an advance and retreat guide mechanism, which guides the advance and retreat of the movable sinker (11). The advance and retreat guide mechanism is arranged between the movable sinker (11) and the sinker groove (13). The advance and retreat guide mechanism comprises: In a linear motion section, the movable sinker (11) is linearly moved in such a way that the front end portion (11a) forms a linear trajectory; and The swing section is arranged at the terminal end of the linear motion section entering the tooth gap (3) through linear motion, and the movable sinker (11) is swung in such a way that the front end portion (11a) of the driven movable sinker (11) forms an arc-shaped trajectory.

2. The movable sinker device (10) of the flat knitting machine (1) according to claim 1, characterized in that: With one of the bottom of the movable sinker (11) and the bottom surface (13b) of the sinker groove (13) as a reference plane, the advance and retreat guide mechanism includes a flat section (11e) and a concave section (11f) formed on the other side, and a convex portion (13a) protruding from the reference plane toward the other side. With respect to the height of the convex portion (13a) protruding from the reference plane to the other side, the height from the reference plane to the flat section (11e) on the other side is smaller, and the height from the reference plane to the top of the concave section (11f) on the other side is the same as or greater, In the linear motion section, the convex portion (13a) abuts against the flat section (11e), and the flat section (11e) is parallel to the reference plane. In the swinging section, the convex portion (13a) is engaged with the concave portion (11f).

3. The movable sinker device (10) of the flat knitting machine (1) according to claim 1 or 2, characterized in that: The sinker groove (13) is arranged on a sinker seat (12) different from the needle bed (2).

4. The movable sinker device (10) of the flat knitting machine (1) according to claim 3, characterized in that: It includes a spring (11b) which applies force to the movable sinker (11) so that the knitting yarn receiving portion (11ab) of the front end portion (11a) pushes the old loop downwardly of the tooth gap (3) through the swinging.

5. A movable sinker (11) of a flat knitting machine (1), used when a new loop is formed in a flat knitting machine (1) in which at least a pair of needle beds (2) are arranged opposite to each other across a tooth gap (3), and can move a front end portion (11a) forward and backward relative to the tooth gap (3) and is used in a state where it is accommodated in a sinker groove (13) extending in a direction of advancement and retreat relative to the tooth gap (3), the front end portion (11a) having a loop forming edge (11aa) and a knitting yarn receiving portion (11ab), the loop forming edge (11aa) being hooked by a sinker loop, the knitting yarn receiving portion (11ab) receiving the knitting yarn of an old loop that has been unhooked and pushing it downward toward the tooth gap, It is characterized in that A convex portion (13a) is provided at the bottom of the sinker groove (13). When being received in the sinker groove (13), the movable sinker (11) faces the bottom of the sinker groove (13). The movable sinker (11) has: a flat section (11e) formed on the front end portion (11a) side at a distance smaller than the height of the convex portion (13a) from the bottom surface (13b) of the sinker groove (13) and guided in a linear motion in contact with the convex portion (13a); and The concave section (11f) is concave at the end of the flat section (11e) in a direction away from the front end (11a) to a height that is the same as or greater than the height of the convex section (13a).

Images