Flat knitting machine with movable sinker and movable sinker

Abstract

The invention provides a flat knitting machine with a movable sinker and the movable sinker, even if the moving stroke in the moving track in the advancing and retreating direction relative to a tooth opening is limited, the part acting on a coil or a knitted fabric is not limited. The movable sinker (1) shown by a solid line is in a state in which the acting area (4) is withdrawn from the tooth opening (11) by pressing the driven arm (2a) by the sinker cam (19). When the pressing of the sinker triangle (19) on the driven arm (2a) is reduced, the acting area (4) of the movable sinker (1) moves to the position indicated by the dotted line by the force applied by the line spring (1a). In the moving process, the pressing wire (16a) presses the pressure receiving part (7) of the movable sinker (1), and the acting part (6), the pressure receiving part (7), the spring part (8) and the limiting part (9) are changed in a manner of forming positions and shapes shown by dotted lines, so that even if the track of the moving arm (5) is limited, the track of the acting part (6) acting on a coil or a braided fabric is not limited.

Description

Technical Field

[0001] The present invention relates to a flat knitting machine including a movable sinker which advances and retreats relative to a needle bed gap together with a knitting needle and performs a function associated with knitting a knitted fabric, and the movable sinker. Background Art

[0002] Knitting of knitted fabrics based on a flat knitting machine has been performed by advancing and retreating the hook at the front end of the knitting needle relative to the tooth gap. When the knitting yarn is supplied to the hook entering the tooth gap and the hook is retreated toward the needle bed, the hook forms a needle loop, and the sinker arranged between the knitting needles forms a sinker loop. The movable sinker is provided with a portion that presses the coil below the tooth gap at the front end portion below the portion forming the sinker loop, so that the portion enters the tooth gap and presses the coil. When a new coil is formed, the movable sinker floats the portion pressing the coil from the coil, and the action of pressing the coil stops (for example, refer to Patent Document 1). The movable sinker is sometimes used together with a fixed sinker for forming a sinker loop (for example, refer to Patent Document 2). The movable sinker used in combination with such a fixed sinker is provided with a claw at the front end that advances and retreats relative to the tooth gap, and can have the function of hooking the claw on the knitted fabric from one side of the needle bed on both sides of the tooth gap and pressing it down. The movable sinker that is not used in combination with the fixed sinker can also have the function of pressing the knitted fabric down.

[0003] In the movable sinker such as Patent Document 1 and Patent Document 2, the front end portion that moves in the direction of advancing and retreating relative to the tooth gap by swinging moves along an arc-shaped trajectory corresponding to the radius from the swing fulcrum. For the swinging movable sinker, the swing fulcrum is set at a position separated from the tooth gap, and the larger the swing radius from the swing fulcrum to the front end portion is compared with the distance between the driving part for swinging and the swing fulcrum, the greater the moving stroke of the front end portion can be. As a movable sinker, a movable sinker that advances and retreats relative to the tooth gap by linear motion rather than swinging is also used. The movable sinker that moves linearly is accommodated in a sinker groove that is provided on the sinker bed and has a flat bottom, and slides in the sinker groove.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Publication No. 5-83657

[0007] Patent Document 2: Japanese Patent Application Publication No. 2017-89033 Summary of the invention

[0008] Problems to be solved by the invention

[0009] In the case where the movable sinker enters the tooth gap and presses down the braided fabric, it is preferred that the movable sinker has a larger moving stroke in the interval where it hooks on the braided fabric and presses down. In order to increase the moving stroke, it is necessary to increase the size of the movable sinker or set an installation position that allows a larger moving stroke. However, the trajectory based on the size and installation position of the movable sinker is limited in order to avoid interference with other components. For example, in the case of using a loop pressing plate to press the braided fabric, in the movable sinker that swings in an arc shape, in order to avoid interference, it is necessary to reduce the swing radius of the front end portion. When the size and installation position of the movable sinker are limited, the moving stroke is limited, which will also affect the position of the claws at the front end portion that press down the braided fabric.

[0010] The object of the present invention is to provide a flat knitting machine and a movable sinker with a movable sinker, so that even if the trajectory of the movable sinker moving in the direction of advance and retreat relative to the tooth gap is restricted, the size of the moving stroke of the part acting on the coil and the woven fabric is not restricted.

[0011] Means for solving problems

[0012] The present invention is a flat knitting machine with a movable sinker, the front ends of the knitting needles arranged in parallel in the length direction of the needle bed advance and retreat relative to the tooth gap, and the knitted fabric is knitted by using the knitting yarn supplied from above the tooth gap, so that the knitted fabric hangs down below the tooth gap, the movable sinker has a passive area and an active area, the passive area can withstand the drive associated with the knitting of the fabric, and the active area moves in the direction of advancing and retreating relative to the tooth gap by driving the passive area, and the flat knitting machine is characterized in that the active area of ​​the movable sinker at least includes a movable arm, a pressure-bearing part, an active part and an elastic sheet, the pressure-bearing part can withstand pressing, and the active part can The elastic sheet connects the pressure-bearing portion and the action portion to the movable arm, and elastically deforms by pressing the pressure-bearing portion, which performs at least a part of the action associated with the knitting of the fabric by advancing and retreating relative to the tooth gap. The flat knitting machine also includes: a supporting mechanism, which supports the movable arm of the movable sinker so that it can move in the direction of advancing and retreating relative to the tooth gap; a driving mechanism, which drives the passive area of ​​the movable sinker to move the movable arm along a first trajectory; and a pressing unit, which is arranged at least midway along the first trajectory, presses the pressure-bearing portion of the movable sinker, and causes the action portion to transfer from the first trajectory to a second trajectory different from the first trajectory.

[0013] Furthermore, in the present invention, the pressing means is a wire member penetrating in the longitudinal direction through a region where the pressure receiving portion of the movable sinker passes along the first trajectory.

[0014] Furthermore, in the present invention, the action portion of the movable sinker is a claw that is hooked on a loop or a knitted fabric, and the second trajectory passes through a position closer to a tooth gap than the first trajectory.

[0015] In addition, in the present invention, it is characterized in that the claw of the movable sinker captures the knitted fabric hanging down below the tooth gap with the second trajectory transferred from the first trajectory by the pressing of the pressing unit on the pressure-receiving portion, and presses the knitted fabric downward below the tooth gap when returning from the second trajectory to the first trajectory side by releasing the pressure of the pressing unit on the pressure-receiving portion.

[0016] In addition, in the present invention, it is characterized in that the movable sinker swings to make the first trajectory arc-shaped, the wire is a tooth gap wire arranged at the front end of the tooth gap side of the needle bed, and the claw passes above the tooth gap wire along the arc-shaped first trajectory.

[0017] In addition, the present invention is characterized in that it further includes a limiting unit that allows the action portion of the movable sinker to remain in a range including the first trajectory and the second trajectory, and limits it so as not to extend toward the needle bed side facing the needle bed across the tooth gap.

[0018] Moreover, the present invention is a movable sinker, which is arranged on a flat knitting machine and has a passive area and an active area. The passive area can withstand the drive associated with the knitting of the fabric, and the active area moves in the direction of advance and retreat relative to the tooth mouth by driving the passive area. It is characterized in that the active area at least includes a movable arm, a pressure-bearing part, an active part and an elastic sheet. The pressure-bearing part can withstand pressure, and the active part can advance and retreat relative to the tooth mouth of the flat knitting machine and perform at least a part of the action associated with the knitting of the fabric. The elastic sheet connects the pressure-bearing part and the active part with the movable arm and is elastically deformed by pressing the pressure-bearing part.

[0019] Effects of the Invention

[0020] According to the present invention, even if the action portion of the movable sinker provided in the flat knitting machine, which is the part that acts on the coil or the knitted fabric, is restricted in moving along the first trajectory in the direction of advancing and retreating relative to the tooth gap due to interference with other components, etc., the action portion can be transferred to a second trajectory different from the first trajectory. The transfer is performed by the pressing unit of the flat knitting machine pressing the pressure-receiving portion included in the action area. Therefore, even if the trajectory of the movable sinker that moves in the direction of advancing and retreating relative to the tooth gap is restricted, the size of the moving stroke of the part that acts on the coil or the knitted fabric can be made not to be restricted.

[0021] In addition, according to the present invention, the wire material passes through the region where the pressure receiving portion of the movable sinker passes along the first track in the length direction. The movable sinkers are arranged in parallel in the length direction of the needle bed, so the structure can be simplified by using the wire material as a pressing unit for transferring the action portion of each movable sinker to the second track.

[0022] In addition, according to the present invention, even if the claw that serves as the action portion is restricted from entering the tooth gap side in the first trajectory, the claw can enter the tooth gap side in the second trajectory. In the section where the claw does not need to enter the tooth gap side, interference with other components can be avoided in the first trajectory.

[0023] Furthermore, according to the present invention, the claw can capture the knitted fabric along the second trajectory entering the tooth gap side, and can press the captured knitted fabric downwardly toward the tooth gap when returning to the first trajectory.

[0024] Furthermore, according to the present invention, the needle bed gap wire can be used as a pressing means, and the claw can be caused to act on the knitting yarn or knitted fabric on the needle bed gap side along the second trajectory shifted from the arc-shaped first trajectory.

[0025] According to the present invention, even if the stitches or knitted fabric acting on the needle gap side generate tension on the action portion of the movable sinker toward the needle bed facing the action portion, the action portion can be restricted by the restriction means to prevent it from extending toward the facing needle bed.

[0026] Furthermore, according to the present invention, when the movable sinker is provided in the flat knitting machine, the movable arm excluding at least the action part, the pressure receiving part and the elastic piece from the action area can be moved along the first track, and the action part can be transferred to the second track different from the first track. If the action part is transferred to the second track at a portion of the movement stroke where the action part is required to act on the coil or the knitted fabric, even if the first track is restricted due to interference with other components, the track of the action part can increase the movement stroke without restriction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view showing the shape of the movable sinker 1 as Example 1 of the present invention.

[0028] Figure 2 Yes means have Figure 1 A right side sectional view of the structure of a flat knitting machine 10 with a movable sinker 1.

[0029] Figure 3 Yes means Figure 2 A right side sectional view of the structure near the tooth mouth 11 of the flat knitting machine 10.

[0030] Figure 4 Yes means Figure 2 A right side sectional view of the flat knitting machine 10 in action.

[0031] Figure 5 Yes means Figure 2 The flat knitting machine 10 Figure 4 right side sectional view of the action.

[0032] Figure 6 Yes means Figure 2 The flat knitting machine 10 Figure 5 right side sectional view of the action.

[0033] Figure 7 This is a front view showing the shape of the movable sinker 31 as Example 2 of the present invention.

[0034] Figure 8 Yes means have Figure 7 A simplified right side cross-sectional view of the structure of a flat knitting machine 30 with a movable sinker 31 .

[0035] Fig. 9 Yes means Figure 8 A right side sectional view of the structure and operation of the flat knitting machine 30.

[0036] Fig.10 Yes means Figure 8 The flat knitting machine 30 Fig. 9 right side sectional view of the action.

[0037] Fig.11 Yes means Figure 8 The flat knitting machine 30 Fig.10 right side sectional view of the action.

[0038] Fig.12 Yes means Figure 8 The flat knitting machine 30 Fig.11 right side sectional view of the action.

[0039] Fig.13 This is a front view showing the shape of a movable sinker 41 as Example 3 of the present invention.

[0040] Fig.14 Yes means have Fig.13 A simplified right side cross-sectional view of the structure and operation of a flat knitting machine 40 with a movable sinker 41.

[0041] Fig.15 Yes means have Fig.13 A simplified right side cross-sectional view of the operation of the flat knitting machine 40 with the movable sinker 41 is shown.

[0042] Fig.16 Yes means have Fig.13 The movable sinker 41 of the flat knitting machine 40 is connected Fig.15 A simplified right side cross-sectional view of the action.

[0043] Fig.17 Yes means have Fig.13 The movable sinker 41 of the flat knitting machine 40 is connected Fig.16 A simplified right side cross-sectional view of the action. DETAILED DESCRIPTION

[0044] the following, Figures 1 to 6 The structures and operations of the movable sinker 1 and the flat knitting machine 10 including the movable sinker 1 according to the first embodiment of the present invention are shown. Figures 7 to 12 The structures and operations of the movable sinker 31 and the flat knitting machine 30 including the movable sinker 31 according to the second embodiment of the present invention are shown. Figures 13 to 17 The structure and operation of a movable sinker 41 and a flat knitting machine 40 having the movable sinker 41 as a third embodiment of the present invention are shown. Corresponding parts in each figure are indicated by the same reference numerals, and repeated descriptions are sometimes omitted. In addition, for the sake of convenience of description, parts not described in the figure of the description object are sometimes referred to by reference numerals described in other figures.

[0045] [Example 1]

[0046] Figure 1 The shape of the movable sinker 1 as the first embodiment of the present invention is shown. The movable sinker 1 is formed of a metal plate as a raw material, and has a passive area 2, a supporting area 3 and an action area 4. The passive area 2 includes a passive arm 2a and a wire spring seat 2b, and when set in the flat knitting machine 10, it is subjected to a drive associated with the knitting of the knitted fabric. The supporting area 3 is supported by an arc-shaped supporting portion 3b in such a manner that the driven movable sinker 1 swings around a swing fulcrum 3a as the center. The action area 4 includes a movable arm 5 and an action portion 6 that can perform an action associated with the knitting of the knitted fabric by swinging based on the drive of the passive area 2. The movable arm 5 of this embodiment 1 is Figure 1The portion to the right of the support area 3 is also included in the portion recorded as the front end portion in the background technology. The action area 4 also includes a pressure-receiving portion 7, a spring portion 8 and a limiting portion 9. The pressure-receiving portion 7 can withstand pressure. The action portion 6 can perform at least a part of the action associated with knitting the knitted fabric. The spring portion 8 connects the action portion 6, the pressure-receiving portion 7 and the limiting portion 9 to the movable arm 5, and is elastically deformed by pressing the pressure-receiving portion 7. The movable arm 5 has a knitting yarn receiving portion 5a and a protrusion 5b. The wire spring seat 2b of the movable sinker 1 receives one end of the wire spring 1a. The wire spring 1a is separate from the movable sinker 1, but can also be formed integrally. In addition, the movable sinker can also be driven in the direction of entering the tooth mouth 11 via a triangle, a sinker push piece, etc. instead of by the force of the spring. In addition, it can also be driven in the direction of entering the tooth mouth 11 by the force of the spring as in the present embodiment 1, and driven in the direction of exiting from the tooth mouth 11 by the sinker push piece.

[0047] When the movable sinker 1 is set on the flat knitting machine 10 and is subjected to the pressure of the pressure-bearing part 7, as shown by the dotted line, the spring part 8 is elastically deformed, and the action part 6 and the pressure-bearing part 7 move. The deformation and movement are relatively performed by the action part 6, the pressure-bearing part 7 and the spring part 8 in the action area 4, and are not performed in the movable arm 5. The knitting yarn receiving part 5a and the protrusion 5b of the movable arm 5 correspond to the parts of the same name shown in the figure mark 5B and the figure mark 5C of the patent document 2, respectively, but the movable arm 5 of the present embodiment 1 has a protrusion 5c. However, although it is preferred to provide the limiting part 9 and the protrusion 5c, they may not be provided. In addition, the shape of the spring part 8 may not be the shape shown in the figure. In addition, the spring part 8 can be any spring part that is separate from the movable sinker 1, such as a wire spring, a leaf spring, etc., which will be elastically deformed if the pressure-bearing part 7 is subjected to pressure.

[0048] Figure 2 Indicates that Figure 1 The flat knitting machine 10 has a structure of a movable sinker 1. The flat knitting machine 10 has a pair of needle beds 12 facing each other at the front on the left side of the figure and the rear on the right side of the figure with a tooth gap 11 therebetween. Each needle bed 12 has a substantially rectangular shape, including a base plate 13 whose long side is a longitudinal direction perpendicular to the paper surface and needle plates 14 arranged at regular intervals in the longitudinal direction of the base plate 13. The needle plates 14 form needle grooves to accommodate knitting needles 15. The knitting needles 15 slide in the needle grooves, so that the hooks 15a at the front end move forward and backward relative to the tooth gap 11, and the knitting yarn supplied from above the tooth gap 11 is used to form a Figure 4 , Figure 5 and Figure 6The loop 20 shown in the figure makes the knitted fabric 21 hang down below the tooth gap 11. The knitting needle 15 is a latch needle, and the hook 15a is opened and closed by the tongue 15b. A fixed sinker 16 is installed at the front end of the needle plate 14 on the tooth gap 11 side between the knitting needles 15. The fixed sinker 16 has an edge on the tooth gap 11 side for the sinker arc to hook when the loop 20 is formed, and also has a through hole for passing the tooth gap wire 17 provided at the front end of the tooth gap 11 side and supporting it. The tooth gap wire 17 has a function of making the old loop stuck to the hook 15a easy to unloop when the hook 15a that receives the yarn is withdrawn from the tooth gap 11 to form a new loop 20. The knitting yarn receiving portion 5a and the action portion 6 are upper claws and lower claws that pass through the upper and lower parts of the tooth gap wire 17 in a circular arc trajectory. When the knitting needle 15 enters the tooth opening 11 to receive the yarn supplied to the hook 15a, the knitting yarn receiving portion 5a, which becomes the upper claw, presses the old loop removed from the hook 15a so that it will not be carried up by the knitting needle 15. Figure 4~Figure 6 As shown, the action portion 6 serving as the lower claw presses the hanging knitted fabric 21 downward.

[0049] Above each needle bed 12, a carriage 18 having a cam surface facing the surface of the needle bed 12 at a distance therefrom reciprocates in the longitudinal direction. On the cam surface, a sinker cam 19 for driving the movable sinker 1 is provided together with the knitting cam for driving the knitting needle 15. In addition, the sinker cam 19 is driven in such a manner that the active area 4 is withdrawn from the tooth gap 11 by pressing the passive arm 2a of the movable sinker 1. The drive for the active area 4 to enter the tooth gap 11 is performed by the force based on the wire spring 1a. The carriage 18 is also equipped with bristles for opening the tongue 15b of the knitting needle 15, a knitting pressing piece for pressing the knitted fabric 21 at the tooth gap 11, etc., but the illustration is omitted. The movable sinker 1 is provided on one side between the fixed sinker 16 and the knitting needle 15, and is accommodated in a state where the support portion 3b is supported by the thin-walled portion provided on the needle plate 14. The arrangement of each part in the front and rear needle beds 12 is basically plane-symmetrical with respect to the tooth gap center plane 11a. However, the movable sinker 1 provided on one side of the fixed sinker 16 is located near the needle plate 14 and the fixed sinker 16 in the front needle bed 12 and is located opposite to the needle plate 14 and the fixed sinker 16 in the rear needle bed 12 .

[0050] Figure 3 express Figure 2The structure of the flat knitting machine 10 near the tooth mouth 11. The fixed sinker 16 supports a pressing wire 16a that functions as a pressing unit as a wire that passes through in the length direction in addition to the tooth mouth wire 17. In addition, the fixed sinker 16 is installed on the needle bed 12 in a groove formed in a manner continuous from the front end of the tooth mouth side of the base plate 13 to the bottom, and is fixed by the fixed wire 13a and the bottom wire 13b arranged at the bottom of the base plate 13. The movable sinker 1 shown by the solid line is in a state where the action area 4 including the movable arm 5, the action part 6, the pressure-receiving part 7, the spring part 8 and the limiting part 9 is withdrawn from the tooth mouth 11 by the pressure of the sinker triangle 19 on the passive arm 2a. When the pressure of the sinker triangle 19 on the passive arm 2a is reduced, the action area 4 of the movable sinker 1 moves to the position shown by the dotted line by the force based on the wire spring 1a. During this movement, the pressing wire 16a presses the pressure receiving portion 7 of the movable sinker 1, so that the action portion 6, the pressure receiving portion 7 and the spring portion 8 change in a manner to the position and shape shown by the dotted line. Therefore, even if the trajectory of the movable arm 5 is restricted, the trajectory of the action portion 6 can be not restricted. In the portion of the movement stroke that is required as the action portion 6 to act on the coil 20 and the braided fabric 21, the movement stroke can be increased. When the sinker cam 19 does not press the passive arm 2a, the action area 4 including the movable arm 5, the action portion 6, the pressure receiving portion 7, the spring portion 8 and the restriction portion 9 is in the position and shape shown by the single-dot chain line.

[0051] Figure 4 The position and state of the movable sinker 1 are indicated by Figure 3 The operation of the flat knitting machine 10 in the case indicated by the solid line. When the knitting needle 15 uses the hook 15a to pull the knitting yarn that has received the supply yarn at the tooth mouth 11 to the needle bed 12 side to form the loop 20, the movable arm 5 of the movable sinker 1 withdraws from the tooth mouth 11 in a manner that the action of pressing the loop 20 with the knitting yarn receiving portion 5a does not work. When the hook 15a enters the tooth mouth 11 to receive the supply of knitting yarn to form a new loop 20, the old loop is relatively moved from the hook 15a to the needle bar side and is removed. When the hook 15a for forming a new loop 20 is pulled in, the old loop passes over the tongue 15b of the closing hook 15a and is unhooked, and is applied to the knitted fabric 21 hanging down below the tooth mouth 11. At this position, the pressure receiving portion 7 is about to abut against the pressing wire 16a.

[0052] Figure 5 The flat knitting machine 10 is shown Figure 4 This action is equivalent to the position and state of the movable sinker 1 being changed by Figure 1 and Figure 3 The dotted line indicates the situation. The pressure receiving portion 7 receives the pressure from the pressing wire 16a, and through the elastic deformation of the spring portion 8, the action portion 6 enters the tooth opening 11 and can capture the braided fabric 21. Figures 4 to 5In the embodiment 1, the portion of the action area 4 other than the action portion 6, the pressure receiving portion 7, the spring portion 8 and the limiting portion 9, that is, the movable arm 5, swings along an arc-shaped trajectory that accommodates the support area 3 in the thin-walled portion of the needle plate 14 and drives. If the pressure receiving portion 7 is not pressed, the entire action area 4 also swings along an arc-shaped trajectory with the distance of each component from the swing fulcrum 3a as the radius. Hereinafter, the entirety of these trajectories is referred to as the first trajectory. In the present embodiment 1, the action portion 6 that passes below the tooth gap wire 17 and becomes the lower claw is transferred from the first trajectory to the second trajectory that is different from the first trajectory by pressing the pressure receiving portion 7 by the pressing wire 16a as the pressing unit. The second trajectory passes through a position closer to the tooth gap 11 side than the first trajectory, so that the downward pressure of the knitted fabric 21 can be started earlier than when the first trajectory is continued. When it is desired to realize the start of downward pressure at such a position only by swinging along the first trajectory, it is necessary to set it to a shape in which the distance from the swing fulcrum 3a becomes larger, and a larger space is required for swinging. In the present embodiment 1, the action part 6 can be brought close to the tooth gap 11 within a limited space, so that even with respect to a thinner knitted fabric 21, the action part 6 can reach the knitted fabric 21 by hooking the knitted fabric 21. In addition, the second trajectory can make the swing radius larger than the first trajectory, so that the trajectory of the downward pressure after hooking the knitted fabric 21 can be made into a trajectory close to the vertical. In addition, if the pressure receiving part 7 and the pressing unit are changed, not only can the second trajectory pass through the position on the tooth gap 11 side, but also the second trajectory can be set to pass through the position above or below the tooth gap 11, which is different from the case of following the first trajectory.

[0053] Figure 6 The flat knitting machine 10 is shown Figure 5 action. At the same time, the action part 6 presses the braided fabric 21 downward toward the tooth mouth 11 and the braided yarn receiving part 5a presses the coil 20. The position and state of the movable sinker 1 follow the first trajectory. For the action part 6, the pressure-bearing part 7, the spring part 8 and the limiting part 9 transferred to the second trajectory, since the pressure on the pressure-bearing part 7 is released, the elastic deformation of the spring part 8 is eliminated. The action part 6 presses the braided fabric 21 downward toward the tooth mouth 11 when returning from the second trajectory to the first trajectory and after returning to the first trajectory. However, the pressing of the braided fabric 21 may also be performed only when returning from the second trajectory to the first trajectory. In addition, the shape of the pressure-bearing part 7, the configuration of the pressing wire 16a, etc. may be changed so that the pressure on the pressure-bearing part 7 is not released and the pressure is maintained until the end.

[0054] The loop 20 and the knitted fabric 21 acting on the tooth gap 11 side may generate tension on the action portion 6 of the movable sinker 1 toward the needle bed 12 facing the action portion 6. In the first embodiment, the restricting portion 9 is provided at a distance from the pressure receiving portion 7 on the side away from the tooth gap 11. Figure 6In the first track, the pressing wire 16a entering the gap restricts the movement of the restricting portion 9, so that the action portion 6 remains in the range including the first track. The pressing wire 16a and the restricting portion 9 function as a restricting unit that prevents the action portion 6 from escaping by preventing it from crossing the tooth gap center plane 11a and extending toward the needle bed 12 side facing each other across the tooth gap 11. By preventing the action portion 6 from extending toward the opposite needle bed 12 side, it has the effect of preventing the interference of the movable sinker 1 of the front and rear needle beds 12 during traverse and preventing the plastic deformation of the spring portion 8. In the section where the pressing wire 16a is located between the restricting portion 9 and the pressure receiving portion 7, including the action section where the action portion 6 performs the action of pressing down the knitted fabric 21, the restricting portion 9 has the function of a stopper when the action portion 6 is pulled by the coil 20. The protruding portion 5c of the movable arm 5 also serves as a stopper that restricts the displacement when the action portion 6 is about to be greatly displaced toward the tooth gap 11 side due to the pressing wire 16a pressing the pressure receiving portion 7 sharply. In addition, the protrusion 5c also serves as a stopper when the action part 6 is pulled toward the opposite needle bed 12. Therefore, the protrusion 5c keeps the action part 6 in the range including the second track. As described above, the restriction part 9, the pressing wire 16a, and the protrusion 5c function as a restriction unit that keeps the action part 6 in the range including the first track and the range including the second track, respectively, and prevents the action part 6 from extending toward the opposite needle bed 12.

[0055] [Example 2]

[0056] Figure 7 and Figure 8 The shape of the movable sinker 31 and the structure of the flat knitting machine 30 provided with the movable sinker 31 are shown as the second embodiment of the present invention. The movable sinker 31 includes a movable arm 35, an action portion 36, a pressure receiving portion 37, a spring portion 38 and a restriction portion 39 as an action area 34, and has the same Figure 1 The movable sinker 1 of the present embodiment 2 has the same structure. The movable arm 35 of the present embodiment 2 exists only between the wire spring seat 2b and the spring portion 38. The action portion 36, the pressure receiving portion 37 and the limiting portion 39 are connected to the movable arm 35 through the spring portion 38 that can be elastically deformed. In addition to the movable sinker 31, the flat knitting machine 30 has the same Figure 2 The same structure as the flat knitting machine 10. When the movable sinker 31 is driven, Figure 8 The pressure-receiving portion 37 shown is subjected to pressure based on the tooth gap wire 17, and becomes the position and state shown by the solid line, dotted line, single-dot chain line and double-dot chain line. The action portion 36, the pressure-receiving portion 37, the spring portion 38 and the limiting portion 39 move along the first trajectory in the state shown by the solid line, dotted line and double-dot chain line, and move along the second trajectory before and after the state shown by the single-dot chain line. In addition, the tooth gap wire 17 also acts on the limiting portion 39. That is, the tooth gap wire 17 also has the functions of a pressing unit and a limiting unit. In addition, the action portion 36 has a function as a Figure 1The movable sinker 1 has the function of the knitting yarn receiving portion 5a.

[0057] Fig. 9 , Fig.10 , Fig.11 and Fig.12 Respectively with Figure 8 The solid lines, dotted lines, single-dot chain lines and double-dot chain lines correspond to the actions of the flat knitting machine 30. Fig. 9 In the state shown, the pressure receiving portion 37 is separated from the tooth gap wire 17 and is not pressed, so the action portion 36, the pressure receiving portion 37, the spring portion 38 and the restriction portion 39 move along the first trajectory. Fig.10 In the state shown, the pressure receiving portion 37 contacts the tooth gap wire 17 and starts pressing, and the action portion 36, the pressure receiving portion 37, the spring portion 38 and the restriction portion 39 start to move to the second trajectory. Fig.11 In the state shown, the push-out of the action portion 36 caused by the pressure of the tooth gap wire 17 on the pressure receiving portion 37 is at its maximum. Fig.11 It also shows a state in which the limiting portion 39 becomes a stopper to limit the displacement when the tooth gap wire 17 presses the pressure receiving portion 37 sharply and the action portion 36 is about to be displaced greatly toward the tooth gap 11 side. Fig.12 In the state shown, the tooth opening wire 17 no longer presses the pressure receiving portion 37, and the action portion 36, the pressure receiving portion 37, the spring portion 38 and the limiting portion 39 return to the first trajectory. The tooth opening wire 17 acts on the limiting portion 39 to prevent the action portion 36 from being disengaged from the tooth opening 11 side due to the tension of the knitted fabric 21. The action portion 36 presses the knitted fabric 21 to the bottom of the tooth opening 11. When the hook 15a enters the tooth opening 11 in order for the knitting needle 15 to receive the supply of knitting yarn to form the next loop 20, Figure 9~Figure 11 The loop 20 caught by the hook 15a is removed from the hook 15a and moves relatively toward the needle bar to become the old loop 22. The upper claw action portion 36 can prevent the old loop 22 from being carried upwardly as the knitting needle 15 enters the tooth gap 11 and moves toward the tooth gap 11 side.

[0058] [Example 3]

[0059] Fig.13 The movable sinker 41 of the third embodiment of the present invention is shown in FIG. The movable sinker 41 includes a movable arm 45, an action portion 46, a pressure receiving portion 47, a spring portion 48, and a restricting portion 49 in an action region 44. The movable arm 45 is disposed relative to the Figure 1 The movable arm 5 has the same structure except that it does not have a portion corresponding to the protrusion 5c.

[0060] Fig.14 Indicates that Fig.13 The structure and operation of the flat knitting machine 40 with the movable sinker 41. Fig.15 , Fig.16 and Fig.17 The operation of the flat knitting machine 40 is shown in FIG. Figure 4 , Figure 5 and Figure 6 The operation of the movable sinker 1 shown is basically the same. However, the tooth gap wire 17 and the limiting portion 49 function as a limiting unit that keeps the action portion 46 of the movable sinker 41 within the range including the first track and the range including the second track, and limits it from extending toward the needle bed 12 side facing across the tooth gap 11.

[0061] In the third embodiment, including the first and second embodiments, the flat knitting machines 10, 30, 40 have a thin-walled portion of the needle plate 14 as a supporting mechanism for supporting the movable sinkers 1, 31, 41. The thin-walled portion is supported in a manner that the movable arms 5, 35, 45 of the action areas 4, 34, 44 of the movable sinkers 1, 31, 41 move in the direction of advance and retreat relative to the tooth gap 11 along the first trajectory. The movable arms 5, 35, 45 are the portions of the action areas 4, 34, 44 except at least the action parts 6, 36, 46, the pressure receiving parts 7, 37, 47, the elastic pieces (spring parts 8, 38, 48) and the limiting parts 9, 39, 49. The flat knitting machines 10, 30, 40 have a sinker cam 19 as a driving mechanism for driving the passive area 2 to move the movable arms 5, 35, 45 along the first trajectory. In addition, the action parts 6, 36, 46, etc. also move halfway along the first trajectory. As a pressing unit, there is a pressing wire 16a in Example 1 and Example 3, and there is a tooth mouth wire 17 in Example 2. The pressing unit is arranged at least halfway through the first trajectory to press the pressure-receiving part 7, 37, 47 of the movable sinker 1, 31, 41, so that the action part 6, 36, 46 is transferred from the first trajectory to a second trajectory different from the first trajectory.

[0062] The pressing wire 16a and the tooth mouth wire 17 that become the pressing unit are supported by the fixed sinker 16 in a manner that passes through the area where the pressure receiving parts 7, 37, and 47 pass in the first trajectory. However, even if the fixed sinker 16 is not used and only the movable sinker is used, the present invention can be applied. The movable sinker is provided with an edge that forms a sinking arc, and a supporting member is provided and supported by the wire that passes through in the length direction. The supporting member may not be provided for each knitting needle 15, but may be provided at intervals between the members. As a pressing unit, even a groove triangle, a protrusion protruding from a fixed sinker in the length direction, etc., can function in the same way as the wire. In addition, as a movable sinker, it may not be a swinging movable sinker but a movable sinker that moves linearly. The movable sinker that moves linearly can be accommodated in a sinker groove that is provided on the sinker bed and has a flat bottom, and slides in the sinker groove. Such a sinker groove becomes a supporting mechanism for supporting the movable sinker that moves linearly. In a movable sinker that moves linearly, the portion that is supported and slides by the sinker groove becomes a supporting area, and a movable arm is supported on the tooth mouth side of the supporting area. The portion corresponding to the action part, the pressure-receiving part, and the limiting part is connected to the movable arm by an elastic sheet. In a movable sinker that moves linearly, the movable arm and other parts move linearly as a first trajectory as a whole. If the pressure-receiving part is pressed, the action part and the like are transferred to the second trajectory. If the bottom of the sinker groove is not flat but is set to a triangular surface with smooth concave and convex surfaces, the movable sinker can also be moved in a manner that adds components of other directions to the linear motion. In addition, as the knitting needle 15, not only a tongue needle that opens and closes the hook 15a by the tongue 15b can be used, but also a compound needle that opens and closes the hook by a slider can be used.

[0063] Description of Reference Numerals

[0064] 1, 31, 41 Movable sinker

[0065] 1a Wire spring

[0066] 2 Passive area

[0067] 3 Support area

[0068] 4, 34, 44 Area of ​​effect

[0069] 5, 35, 45 mobile arm

[0070] 5a, 45a Braiding yarn receiving part

[0071] 5c Protrusion

[0072] 6, 36, 46 action part

[0073] 7, 37, 47 Pressure-bearing part

[0074] 8, 38, 48 Spring part

[0075] 9, 39, 49 Restricted

[0076] 10, 30, 40 flat knitting machines

[0077] 11 Teeth

[0078] 11a Center plane of tooth mouth

[0079] 12 Needle bed

[0080] 14 Needle plate

[0081] 15 knitting needles

[0082] 15a Hook

[0083] 16 Fixed sinker

[0084] 16a Pressing wire

[0085] 17 tooth wire

[0086] 19 Sinker triangle

Claims

1. A flat knitting machine with a movable sinker, wherein the front ends of the knitting needles arranged in parallel in the length direction of the needle bed advance and retreat relative to the tooth gap, and a knitted fabric is knitted using knitting yarn supplied from above the tooth gap, so that the knitted fabric hangs down below the tooth gap, and the movable sinker has a passive area and an active area, wherein the passive area can withstand a drive associated with knitting the fabric, and the active area moves in a direction of advancing and retreating relative to the tooth gap by driving the passive area, and the flat knitting machine is characterized in that: The action area of ​​the movable sinker at least includes a movable arm, a pressure-bearing portion, an action portion and an elastic sheet. The pressure-bearing part can withstand pressure. The action portion can advance and retreat relative to the tooth gap to perform at least a part of the action associated with knitting the knitted fabric. The elastic sheet connects the pressure receiving part and the action part with the movable arm, and is elastically deformed by pressing the pressure receiving part. Flat knitting machines also include: A support mechanism that supports a movable arm of the movable sinker so as to be movable in a direction of advancing and retreating relative to the tooth gap; a driving mechanism, the driving mechanism driving the passive region of the movable sinker to move the movable arm along a first trajectory; as well as The pressing unit is provided at least midway along the first trajectory and presses the pressure receiving portion of the movable sinker to shift the action portion from the first trajectory to a second trajectory different from the first trajectory.

2. The flat knitting machine with a movable sinker according to claim 1, characterized in that: The pressing means is a wire member that penetrates a region of the movable sinker through which the pressure receiving portion passes along the first trajectory in the longitudinal direction.

3. The flat knitting machine with a movable sinker according to claim 1 or 2, characterized in that: The action part of the movable sinker is a claw hooked on the coil or the braided fabric. The second trajectory passes through a position closer to the tooth gap than the first trajectory.

4. The flat knitting machine with movable sinkers according to claim 3, characterized in that: The claw of the movable sinker captures the knitted fabric hanging down below the tooth gap with the second trajectory transferred from the first trajectory by the pressing of the pressed portion by the pressing unit, and presses the knitted fabric downward below the tooth gap when returning from the second trajectory to the first trajectory side by releasing the pressure on the pressed portion by the pressing unit.

5. The flat knitting machine with movable sinkers according to claim 3, characterized in that: The movable sinker swings so that the first trajectory becomes an arc shape. The wire is a tooth gap wire provided at the front end of the tooth gap side of the needle bed, The claw passes above the tooth mouth wire (17) along a first arc-shaped trajectory.

6. The flat knitting machine with movable sinkers according to claim 1, characterized in that: The invention further includes a restricting unit that allows the action portion of the movable sinker to remain in a range including the first trajectory and the second trajectory, and restricts the action portion from protruding toward the needle bed side facing the needle bed across the tooth gap.

7. A movable sinker, which is arranged on a flat knitting machine, and has a passive area and an active area, wherein the passive area can withstand a drive associated with knitting of a knitted fabric, and the active area moves in a direction of advance and retreat relative to a tooth gap by driving the passive area, wherein the movable sinker is characterized in that: The action area at least includes a moving arm, a pressure-bearing portion, an action portion and an elastic sheet. The pressure-bearing part can withstand pressure. The action part can advance and retreat relative to the tooth gap of the flat knitting machine to perform at least a part of the action related to knitting of the knitted fabric. The elastic piece connects the pressure receiving part and the action part with the movable arm, and is elastically deformed by pressing the pressure receiving part.

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