JPH10183449A - Knit fabric-lowering device in flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide knit fabric-lowering devices in a flat knitting machine, especially capable of being adopted to separately lower the front and back fabrics of a knit fabric having a cross section comprising two layers, such as a cylindrical knit fabric. SOLUTION: The front and back knit fabric-lowering devices are arranged on the front and back sides of a knit fabric-passing route 8 formed below at least one pair of flat knitting machine tooth parts arranged in a state that the tooth parts of needle beds are faced to each other. The knit fabric-lowering devices comprises a front side fabric-lowering means 16 for catching and lowering only the front side fabric of the knit fabric placed in the knit fabric-passing route 8, a rear side fabric-lowering mans 17 for catching and lowering only the rear side fabric, and lowering force-controlling mechanisms 20 for controlling the lowering forces of the fabric-lowering means 16, 17. Each fabric-lowering means 16 or 17 is formed by arranging a plurality of knit fabric-lowering members in the longitudinal direction of the needle bed, and when the knit fabric is lowered, the knit fabric-lowering members are successively or separately operated to lower the knit fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitting fabric lowering device provided in a flat knitting machine, and more particularly to a front knitting portion and a rear knitting fabric such as a tubular knitted fabric using a flat knitting machine. The present invention relates to a knitted fabric lowering device for pulling down a knitted fabric having a two-layer cross-sectional structure composed of a portion and a portion.

[0002]

2. Description of the Related Art A flat knitting machine has at least a pair of needle beds disposed opposite to each other in front and rear, and a lowering device for pulling down a knitted fabric knitted by the knitting needles on the needle beds is provided below a mouth portion of the needle bed. Can be Japanese Patent Publication No. 57-55815 discloses an apparatus for lowering the knitted fabric, which is particularly capable of uniformly lowering the entire width of the knitted fabric and corresponding to forming knitting and three-dimensional knitting.

The pull-down device disclosed in the above-mentioned publication is of a type in which a drive flap and a knitted fabric contact surface are provided so as to grip the knitted fabric facing the front and back of the passage of the knitted fabric below the tooth gap. A plurality of drive flaps, which are preloaded with springs, are selectively operated by a lifting device as a gripper that can swing within a limited range around a vertically extending swing axis, and when the drive flap is lowered While holding the formed knit between the free edge of the drive flap and the knitting contact surface, the knitted fabric is pulled down along the knitting contact surface.

In the above-described pulling-down device, the knitted fabric is gripped by the drive flaps provided before and after the passage of the knitted fabric and the knitted fabric contact surface, so that the knitted fabric to be knitted is a single-layered knitted fabric. Has a flexible reduction, and as a result,
Even in a three-dimensional knit, a desired uniform and reliable drawing can be guaranteed over the entire width of the knit.

Recently, the sewing process after knitting has been omitted by knitting the sleeves and the front body and the back body of a knitted garment such as a sweater at both ends of a knitting width and knitting them into a tubular shape having a two-layer cross section. At the same time, the production method of seamless knitting to obtain knitted clothing with high elasticity has attracted attention.

However, the shape and the number of courses of the front body and the back body to be tubularly knitted are not necessarily symmetrical in the front-rear direction, and it is necessary to lower the front and rear knitted fabrics accordingly. The knitted fabric could not be sufficiently lowered by a pulling-down device having a structure for pulling down the fabric.

[0007]

SUMMARY OF THE INVENTION The object of the present invention can be particularly adopted for individually lowering each knitted fabric before and after a knitted fabric knitted in a two-layer cross section like a tubular knitted fabric. It is intended to provide a pulling device.

[0008]

In order to achieve the above object, according to the present invention, at least one pair of front and rear flat knitting machines are provided below the tooth gaps of the needle bed with the tooth gaps of the needle bed facing each other. A knitted fabric lowering device disposed before and after to lower a knitted fabric across a formed knitted fabric passing route, capturing only the front knitted fabric of the knitted fabric in the knitted fabric passing route. Each knitted fabric includes a front knitting fabric lowering unit, a rear knitting fabric lowering unit that captures and lowers only the rear knitted fabric, and a lowering force adjusting mechanism that adjusts a lowering force of each knitted fabric lowering unit. The pull-down means is formed by arranging a plurality of pull-down members in the longitudinal direction of the needle bed, and the pull-down members can be sequentially or individually operable to pull down the knitted fabric when the knitted fabric is lowered. It is.

Therefore, the front knitted fabric and the rear knitted fabric knitted by the needle bed before and after the flat knitting machine are respectively lowered by the individual knitting fabric lowering means, so that the shapes of the front and rear knitted fabrics are different. Even in this case, the knitted fabric is properly lowered. It is also characterized by a knitted fabric lowering device opening / closing mechanism that moves these means in the approaching / separating direction in conjunction with the front knitted fabric lowering means and the rear knitted fabric lowering means, or independently. The lowering action part of the means is constituted by an elevating member having a knitted fabric capturing surface in a portion facing the knitted fabric, and the knitted fabric capturing surface has a shape that captures the knitted fabric when descending and opens the knitted fabric when ascending. Also features. Further, the knitted fabric capturing surface is attached to the pull-down member main body via the elastic material.

In this case, the knitted fabric is caught and released only by moving the elevating member up and down on the same plane, and the knitted fabric is damaged even when a lateral force acts on the knitted fabric such as racking. The knitted fabric can be removed from the knitted fabric capturing surface without any need. The knitted fabric catching surface of the knitted fabric pulling-down means is urged in the projecting direction with respect to the pulling-down member main body so that it can be stored at a position where it does not protrude from the side of the knitted fabric of the pulling-down member main body when inactive or the amount of protrusion is reduced. It is configured to be releasable. In such a case, the knitted fabric catching surface is prevented from touching the knitted fabric, the hook at the time of setting up, or the like when the knitting fabric lowering means is not operated.

[0011] The knitted fabric capturing surface is formed by a plurality of needles implanted perpendicularly or at a predetermined angle to the surface of the base material, and the intermediate position or the tip portion of the plurality of needles is bent obliquely downward. did. In such a device, the knitted fabric is automatically captured and released simply by moving the knitted fabric capturing surface up and down on the same plane.

The pull-down member and the pull-down force adjusting means are connected by an elastic member, and the elastic force of the elastic member is changed by changing the position of the elastic member connecting portion of the pull-down force adjusting means to reduce the knitted fabric pulling force of the knitted fabric capturing surface. It is configured to be changeable. In such a configuration, the setting of the knitted fabric lowering force on the knitted fabric capturing surface can be arbitrarily set according to the knitted fabric.

[0013] The lowering means includes a lowering claw bed provided in parallel with the longitudinal direction of the needle bed, a selector, a lowering claw jack, and a lowering claw mounted on a plurality of storage grooves formed in the bed.
Urging means for urging the lowering claw downward, a carriage reciprocating in the width direction of the lowering claw bed, selecting means mounted on the carriage for selecting any of the lowering claws, and lowering selected by the selecting means A carriage having a cam means for raising the pawl is included in the configuration.

Further, the pull-down pawl is urged downward, and the selector and the pull-down pawl are engaged with each other so that the tip of the pawl swings in a direction away from the knitted fabric, thereby moving the pawl into the knitted fabric. After releasing the lowering claw while maintaining the engagement between the selector and the lowering claw,
By lowering the selector to release the engagement with the pull-down pawl, the pawl of the pull-down pawl is swung toward the knitted fabric to catch the knitted fabric. The knitted fabric is captured by a suction unit that sucks the knitted fabric.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIG. 1 is a front view of a flat knitting machine with a part cut away, and FIG. 2 is a sectional view taken along line AA of FIG.
Indicates the flat knitting machine as a whole. In the flat knitting machine 1, a knitting needle 2 is accommodated in a needle bed 3 so as to be able to advance and retreat, and the needle bed 3 is disposed back and forth in a state in which a mouth portion 4 is opposed to each other. A knitting device 5 for pulling down the knitting yarn at the time to apply a downward tension to the knitted fabric until the knitted fabric has a predetermined length, and a knitted fabric pulled down by the knitting device 5 to a predetermined length. A pull-down roller device 6 of the type that is sandwiched between rollers and pulled down, and a knitted fabric pull-down device 7 that cooperates with the pull-down roller device 6 or pulls down the knitted fabric alone are provided.

The set-up device 5 and the pull-down roller device 6
The knitted fabric lowering device 7 is formed by an alternate long and short dash line in FIG. 2 and is formed between the lip portions 4 of the front needle bed (FD, FU) and the rear needle bed (BU, BD) disposed in front and back. The knitted fabric passage route 8 is provided below each needle bed. In the knitted fabric lowering device 7 of the present embodiment, a pair of knitted fabric lowering means 16 and 17 are provided before and after the knitted fabric passage path 8 below the mouth portion 4, and a knitted fabric knitted in a tubular shape is provided. However, it is of the type that can be reduced advantageously. The tubular knitted fabric referred to here is, for example, knitted in a state where the knitted fabric of the front body is attached to the front needle bed, the knitted fabric of the back body is attached to the back needle bed, and both knitted fabrics are connected at both ends. One pull-down device 7 lowers only the front body knitted fabric, and the other pull-down device 7 lowers only the back body knitted fabric. The set-up device 5 includes a pair of hook members 9 arranged back to back so as to face the front and rear knitting needles, and moves the hook members 9 up and down from a position below the pull-down roller device 6 to a position above the front and rear knitting needles. And a lifting mechanism (not shown) for raising and lowering.

The pull-down roller device 6 swings with an "L" -shaped bracket 12 facing a pair of front and rear shafts 11 pivotally supported between the left and right frames 10 of the flat knitting machine. The bracket 12 is movably pivoted.
The lowering roller 13 is rotatably pivotally supported on the upper end of the roller, and the lowering roller 13 can be driven to rotate by a rotating means (not shown). Ends of the bracket 12 facing each other on the side of the knitted fabric passage route 8 are connected by a link plate 14, and one of the brackets 12 is rotated by a rotation lever 15 to thereby lower the front and rear pulling rollers 13.
13 are swingable in directions of coming and going.

The knitted fabric lowering device 7 includes a knitted fabric passing path 8
Front knitting fabric lowering means 16 capable of capturing and lowering only the front knitted fabric of the knitted fabric, rear knitting fabric lowering means 17 capable of capturing only the rear knitted fabric and reducing the same, and both knitting fabric reducing means A knitted fabric lowering device opening / closing mechanism (hereinafter, simply referred to as an opening / closing mechanism) 18 for moving the knitted fabrics 16 and 17 toward and away from the knitted fabric of the knitted fabric passage route 8, and a knitted fabric of both knitted fabric lowering means 16 and 17 which will be described later A lowering force adjusting mechanism 20 that adjusts the raising and lowering of the capturing surface 19 and the lowering force thereof is configured. Each of the lowering means 16 for the front knitted fabric and the lowering means 17 for the rear knitted fabric are incorporated in the front and rear casings 22 which can be moved in the approaching / separating direction by the parallel link 21 described later. That is, the movement of the front and rear casings 22 is performed between a "closed" state in which the facing fabric capturing surfaces 19, 19 are narrowed to perform a fabric lowering action, and an "open" state in which the widely opened fabric is not performed. Will be moved.

As shown in FIGS. 1 and 3, the opening / closing mechanism 18 has a motor 84 whose rotation is controlled by a control device (not shown) for controlling the knitting of the flat knitting machine. A cam shaft 86 which is transmitted through the shaft 85 and is driven to rotate, and an opening / closing cam 2 attached to the cam shaft 86
5, an open / close swing bracket 27 in which a roller 26 slides on and swings the open / close cam 25, and an open / close swing bracket 2
The front opening / closing arm 29 having an inverted “L” shape pivotally supported by a front pivot shaft 30 by an opening / closing rod 28 connected to the arm 7 and the front opening / closing arm 29 with respect to the knitting fabric passage 8. It comprises an inverted "L" -shaped rear opening / closing arm 33 and an interlocking plate 34 for connecting the ends of the opening / closing arms 29 and 33 on the side of the knitted fabric passage 8. This opening / closing cam 2
5 swings the opening / closing swing bracket 27 in the counterclockwise direction in the figure to separate the front and rear casings 22 and 22 as shown in FIG. The casing 22 has a closing cam surface in which the space between the casings 22 is narrowed.

Front opening / closing arm 29 and rear opening / closing arm 3
3 are connected to output transmission shafts 30 of drive motors 87 for driving a drive shaft 70 of a pull-down force adjusting mechanism 20 described later, as shown in FIGS. It is pivotally supported. The front opening / closing arm 29 pivotally supports an end portion 70a of a front drive shaft 70 of the pull-down force adjusting mechanism 20 pivotally supported by the front casing 22 at an intermediate portion between the corner portion and the connection of the opening / closing rod 28. The lower end of the opening / closing arm 33 pivotally supports an end 70a of the drive shaft 70 on the rear side of the pull-down force adjusting mechanism 20 pivotally supported by the rear casing 22.

The parallel link 21 for moving the two casings 22 in the contact / separation direction is connected to the front opening / closing arm 2.
9 and a link plate 38 provided in parallel with the end 70 a side portion of the front casing 22.
The parallel link 21 of the front casing 22 is formed by the end 70a side portion of the rear opening / closing arm 33 and the link plate 39 provided in parallel with the end portion 70a.
reference).

The lowering force adjusting mechanism 20 controls the knitting of the flat knitting machine 1 as shown in FIG. 6 (not shown).
A motor 84 whose rotation is controlled by a control signal from the motor, a cam shaft 86 whose rotation is transmitted via a gear transmission mechanism 85 and is driven to rotate, and a cam shaft 86 fixed to the cam shaft 86 and accompanies the open / close cam 25. Rotating lowering force adjusting cam 40
And a lowering force adjusting bracket 42 in which a sliding roller 41 is slidably brought into contact with the lowering force adjusting cam 40 and swings, and an intermediate portion is rotatably supported by the output transmission shaft 30 and front and rear casings 22. A front arm 43 and a rear arm 44, each of which is disposed in a symmetrical position with respect to the knitted fabric passage path 22, and a lower end of the rear arm 44 and the lowering force adjusting bracket 42; A connecting rod 45 having an adjustable length for connecting the upper end, and both arms 43 on the knitted fabric passage route 8 side;
44, and an interlocking plate 46 for connecting the end portions of each other.

At the lower ends of the arms 43 and 44, an elevating drive means 48 for elevating and lowering the lowering members 47 and 47 incorporated in the front and rear casings 22 and the lowering force of the lowering members 47 and 47 are set. Lowering force adjusting means 4
9 (see FIGS. 7 and 8). A plurality of the lowering members 47 are formed side by side along the longitudinal direction of each of the front and rear needle beds 3. Each of the lowering members 47 includes a plastic lowering member main body 50 formed into a substantially rectangular shape by injection molding. And a knitted fabric capturing surface forming member 53 mounted in the pull-down member main body 50 (see FIG. 9).

The lowering member main body 50 forms a storage space 52 for the knitted fabric capturing surface forming member 53 in the upper half thereof,
On one side surface of the storage space 52, a spring 5 for pulling down tension adjustment is provided.
A spring receiving projection 55 for engaging the upper end of the projection 4 is formed so as to protrude (see FIGS. 7 and 8). The lower end of the pull-down tension adjusting spring 54 is received by a spring receiving projection (elastic member connecting portion) 83 provided on a push-up action portion 76b of a push-up lever 76 described later. An engagement piece 6 of a solenoid 59 to be described later is provided on the inner surface of the lower side of the lowering body 50 on one side.
0 is formed in two stages, upper and lower, and the lower end of the pull-down member body 50 is provided with a push-up roller 5.
The lifting drive 56 and the pull-down force adjusting means 49 act on the push-up roller 56 so that the pull-down section main body 50 can be moved up and down.

The knitted fabric catching surface forming member 53 is formed of a relatively heavy synthetic resin, and the knitted fabric catching surface forming member 53 is inserted into the storage space 52 of the pull-down member main body 50 with the knitted fabric catching surface formed on the surface thereof. The knitted fabric capturing surface forming member 53 is housed, and is prevented from being removed by a protector 50a mounted on the lower half of the pull-down member body 50. The above solenoid 59
Is provided on the back surface of the sliding bearing 58 fixed to the side of the knitted fabric passage 8 of the casing 22 as shown in FIGS. 7 and 8. Next, the operation of the solenoid 59 will be described.

The ON / OFF of the solenoid 59 is controlled by a control signal from the control device. Normally, the power is cut off and the solenoid 59 is turned OFF.
0 is an engaging portion 61 provided on the back side of the pull-down member main body 50.
, The pull-down member main body 50 is slidable in the vertical direction. When the solenoid 59 is energized and turned on, the engaging piece 60 of the solenoid 59 is inclined in the engaging direction and is engaged with one of the upper and lower engaging portions 61 provided on the pull-down member main body 50.

When the knitted fabric catching surface forming member 53 in which the engaging piece 60 of the solenoid 59 is engaged with the lower engaging portion 61 rises to the vicinity of the upper limit, the knitted fabric catching surface 19 is lowered toward the casing 22 side. When the engagement piece 60 of the solenoid 59 is engaged with the upper engagement portion 61, the knitted fabric capturing surface 19 is in a protruding state and does not move up and down. The states of “depression” and “pause” will be described later in detail. In this manner, the ON and OFF of the solenoid 59 controls the stop of the vertical sliding movement of the pull-down member 47 and the release of the stop.

As shown in FIGS. 7 and 8, the knitted fabric catching surface forming member 53 has four
2, the coil spring 63 attached to the spring accommodating recess 62 is attached to the spring receiving projection 64 protruding from the bottom of the accommodating space 52 of the pull-down member main body 50, and the knitted fabric capturing surface 19 has its surface Are protruded toward the knitted fabric passage route 8 side. As described above, the knitted fabric capturing surface 19 urged to be extruded by the coil springs 63 provided at the four corners on the back surface of the knitted fabric capturing surface forming member 53 is similar to a case where a knitting structure is changed during knitting to form a pattern. Even when the thickness of the knitted fabric is increased or decreased or the yarn count of the knitting yarn is changed, the action of properly engaging or releasing the knitted fabric capturing surface 19 with the knitted fabric being knitted by the tension of the coil spring 63. I do. Also,
Knitted fabric capturing surface 1 urged to be pushed out by the tension of coil spring 63
Reference numeral 9 indicates that when a lateral force acts on the knitted fabric due to racking of the needle bed 3 or reduction of the knitted fabric, the knitted fabric capturing surface 19 is inclined in a direction in which the knitted fabric is easily detached against the coil spring 63. The knitted fabric is also released from the knitted fabric catching surface 19 in combination with the shape of the needle 51 described later.

At the center of the back surface of the knitted fabric capturing surface forming member 53, a roller 65 is provided in a state where it is horizontally supported with a gap between the roller 65 and the back surface. On the other hand, from the front and rear casings 22, a downward hook-shaped pull-in piece 66 is provided to enter a space between the roller 65 and the center of the back surface of the knitted fabric capturing surface forming member 53. As shown in FIG. 10, the hook-shaped pull-in piece 66 has a hook portion 66a downwardly projecting from the surface thereof.
A fixing piece 66b that fits into the upper end space of the casing 22 is formed so as to hang from the upper end of the 6a to the back surface, and abuts on the front upper edge portion 22a of the casing 22 between the hook portion 66a and the fixing piece 66b. A fixing portion 66c for stabilizing the pull-in piece 66 is integrally formed.

Therefore, the fixing piece 66b of the pull-in piece 66 fits into the upper end of the casing 22, and the fixing portion 66c abuts on the front upper edge of the casing 22, so that the hook-shaped pull-in piece 66 approaches the upper end of the casing 22. When the pull-down member 47 is raised to the vicinity of the uppermost position, the roller 65 is pulled toward the casing 22 by the downward hook-shaped pull-in piece 66 protruding from the casing 22 when the pull-down member 47 is raised near the uppermost position. As shown in FIG. 5, the knitted fabric capturing surface 19 sinks toward the casing 22 against the elastic force of the coil spring 63.

As shown in FIG. 11, the knitted fabric capturing surface 19 is composed of a flexible base material 69 in which a canvas 67 is coated with rubber 68 or the like, and a needle 51 which is densely planted on the base material 69. The portion of the needle 51 protruding from the base material 69 is
One end is planted upward with respect to the surface of the base material 69, and the middle portion is bent so that the tip portion is downward, and the upper edge of the tip of the needle 51 is chamfered, and the tip side portion is cut into a tapered shape. It is formed. When the needles 51 of the knitted fabric capturing surface 19 are formed in this manner, as shown in FIG. 11B, the knitted fabric bites the needles 51 upwardly (in the direction C in the drawing) with respect to the needles 51 and downwards ( The knitted fabric is released without resistance against tension in the direction (D direction in the figure).

As shown in FIG. 11-B, when the tension of the knitted fabric acts on the needle 51 in the lateral direction (the direction E in the figure), the knitting is caused by the elastic deformation of the base material 69 and the bending of the needle 51. The ground is released from the needle 51. Here, after the needle 51 is implanted perpendicularly to the surface of the base material 69, the intermediate portion may be bent so that the tip is formed obliquely downward, as shown in FIG. Needless to say, the needle 51 can be formed so as to extend from the plate-like member, or as shown in FIG. 13, the needle 51 forming a sawtooth shape from the plate-like member to form the knitted fabric capturing surface 19 can be formed. . When the needle 51 is formed from a plate-like member as shown in FIGS. 12 and 13, the needle 51 can be integrally formed of a synthetic resin.

Next, a description will be given of the lowering force adjusting mechanism 20 for raising and lowering the lowering member 47 incorporated in each of the casings 22 and the amount of raising and lowering.
0 is a lifting drive means 48 as shown in FIGS. 7 and 8;
And a pull-down force adjusting means 49. Lifting drive means 48
4 and 5, a pair of front and rear drive motors 87 provided on the left side of the frame 10,
2 and 22, each having a hexagonal drive shaft 70 whose end 70 a is supported by the front and rear open / close arms 29, and a gear that transmits the rotation of the drive motor 87 to the drive shaft 70 via the output transmission shaft 30. Conducting means 88 and FIGS.
The push-up cam 7 provided on the drive shaft 70 corresponding to the push-up roller 56 of each pull-down member 47 as shown in FIG.
1 and the push-up lever 7 acting on the push-up roller 56
3 and a push-up roller 74 provided at an intermediate portion of the push-up lever 73.

As shown in FIG. 14, the push-up cam 71 is formed with one cam ridge 71b from the base end where a hexagonal hole 71a to be fitted into the hexagonal drive shaft 70 is formed. Are arranged corresponding to each of the pulling members 47, 47... So that the phases of the adjacent cam ridges 71b are sequentially set to six.
It is fitted and attached to a hexagonal drive shaft 70 while being shifted by 0 degrees. The push-up lever 73 is
15A to 15C, the cam 71 is pushed up in the middle.
Is provided with a slit 89 in which the cam peak 71b rotates.
The push-up roller 74 is rotatably disposed in the slit 89.

The push-up lever 73 is provided at the base end 73a.
Are pivotally supported by a pivot shaft 72 (see FIGS. 7 and 8) provided in parallel with the drive shaft 70. A spiral spring 75 is provided at the base end 73a, and an arched shape is formed from the base end 73a. The tip 73 b extended to the upper side acts on the push-up roller 56. Spiral spring 75
The knitted fabric capturing surface 19 together with the pull-down tension adjusting spring 54
It also acts to adjust the pull-down force. The push-up cam 71 and the push-up lever 73 are arranged such that five pull-down members 47 arranged in the longitudinal direction of the needle bed 3 constitute one unit, and the phases of the pull-down members 47 are shifted by 60 degrees. Since the hexagonal drive shaft 70 is fitted and attached to the hexagonal drive shaft 70, the cam ridges 71b are formed on five of the six surfaces of the hexagonal drive shaft 70, and the remaining one surface of the drive shaft 70 The push-up lever 73 is also not rocked, that is, the rest surface where the drive motor 72 stops. When the drive motor 72 is stopped on the rest surface, all the pull-down members 47 are kept in a state where the knitted fabric catching surface 19 holds the knitted fabric, and the knitted fabric is pulled down on the knitted fabric catching surface 19. . The rotational speed of the drive motor 72 can be changed and stopped in order to match the knitting speed of the knitted fabric with the basic stroke S of the knitted fabric capturing surface forming member 53 shown in FIG. For example, when the knitting speed of the knitted fabric is low, the drive motor 72 is not constantly rotated and is stopped at the rest position, or is rotated at a low speed. Always rotate.

The pull-down force adjusting means 49 is formed by a push-up lever 76 which is turned by the front arm 43 and the rear arm 44 of the pull-down force adjusting mechanism 20, respectively. As shown in FIG. 16, the push-up lever 76 pushes up the push-up roller 56 of the pull-down member 47 to an end extending in an arch shape from a pivotal support portion 76a pivotally supported by the pivot shaft 72 of the push-up lever 73. A push-up action portion 76b is formed, and a spring receiving projection 83 is formed to project from a side surface portion of the push-up action portion 76b. In addition, the pivot 76
Below the “a”, a forked portion 76 c operated by the operation swing shaft 82 of the pull-down force adjusting mechanism 20 is formed. As shown in FIGS. 6 and 7, the operation swing shaft 82 is disposed at an upper end portion of an operation lever 78 attached to an operation shaft 79. The operation lever 78 is connected to both arms of the pull-down force adjusting mechanism 20. A slider 80 at the end of an interlocking lever 77 attached to an operation shaft 79 is slidably fitted into a long hole 81 formed at the lower end of each of 43 and 44.
4, the front arm 43 and the rear arm 44 were rocked via the gear transmission mechanism 85, the cam shaft 86, the pull-down force adjusting cam 40, the pull-down force adjusting bracket 42, and the connecting rod 45. Occasionally, the interlocking lever 77 rotates the operation shaft 79 (see FIG. 6).

The opening / closing of the casings 22 by the opening / closing mechanism 18 constructed as described above, and the pull-down force adjusting mechanism 2
The opening / closing cam 25 of the opening / closing mechanism 18 controls the amount of lowering of the lowering member 47 and the adjustment of the lowering force.
The lowering force adjusting cam 40 and the lowering force adjusting cam 40 are attached to the same camshaft 84 so as to rotate together therewith. Therefore, by combining these cams 25 and 40, the casing 22
When the casing 22 is in the closed state and the casing 22 is in the closed state, the pull-down force adjusting mechanism 2 is operated.
0, the lowering force of the lowering member 47 is “strong”, “medium”,
It is adjusted to four levels of "weak" and "pause".

The opening / closing of the casings 22 and the four-step pulling-down force of the pull-down member 47 when the casings 22 are closed will be described below. The amount (S shown in FIG. 18) pushed up by the cam ridge of the push-up cam 71 via the lever 73 will be described as a basic stroke. Casing 2
The open state 2 is a state in which the knitted fabric passing path 8 through which the knitted fabric between the casings 22 before and after the knitted fabric capturing surface 19 is incorporated is separated, and the opening / closing mechanism 18 is operated as follows. I do.

First, the opening / closing cam 25 is rotated by a motor 84, which is rotationally controlled by a control device (not shown) for controlling the knitting of the flat knitting machine 1, via a gear transmission mechanism 85 and a cam shaft 86. When the moving bracket 27 is swung counterclockwise in FIG. 3, the front opening / closing arm 29 of the front casing 22 rotates clockwise, and the rear opening / closing arm 33 of the rear casing 22 rotates counterclockwise. Move. As a result, the front and rear casings 22 are respectively connected to the parallel links 2.
1 and is moved in the separating direction, and is in the "open" state of FIGS. As a result, the front and rear casings 22 are moved by the action of the parallel link 21 to the knitted fabric passing path 8 therebetween.
Is wide open, so that the hook 9 of the set-up device 5 can move up to the tooth opening 4.

At this time, the pull-down force adjusting cam 40 rotates together with the opening / closing cam 25. As a result, the pulling force adjusting bracket 42 swings clockwise in the state of FIG. 6, and rotates the rear operation shaft 79 counterclockwise via the interlocking lever 77. As the operation shaft 79 rotates, the operation swing shaft 82 pushes up the lever 76 as shown in FIG.
Push the front part of the forked part 76c of the
Is rotated clockwise about the rotation center 72, so that the action portion 76 b at the tip of the push-up lever 76 pushes up the push-up roller 56 to raise the knitted fabric capturing surface forming member 53 to near the upper limit position.

The amount of pushing-up of the knitted fabric capturing surface forming member 53 by the pushing-up action portion 76b is larger than the basic stroke S pushed up by the pushing-up cam 71 via the pushing-up lever 73. Thereby, the knitted fabric capturing surface forming member 53
Since the roller 65 at the center of the rear surface is pulled toward the holder 57 by the hook-shaped pull-in piece 66, the knitted fabric capturing surface 19 sinks toward the casing 22 against the coil spring 63 (FIG. 16).
-A). In this state, the solenoid 59 is energized to move the engagement piece 60 from the state (A) in FIG.
When it is tilted toward the engaging portion 61 in the state (b) in B, the engaging piece 60 engages with the lower engaging portion 61 and the knitted fabric capturing surface 19
The state of “submerged” holding the knitted fabric catching surface forming member 53 in the vicinity of the upper limit position is maintained in a state in which the sink is sinking into the casing 22 side. Here, the state of “submerged” in which the knitted fabric capturing surface 19 sinks into the casing 22 side is set at the portion of the pull-down member 47 outside the knitting width, and the knitted fabric capturing surface 19 is moved to the casing 2.
By sinking into the two sides, the knitted fabric is evacuated so as not to hinder the knitting. Also, when the knitted fabric is moved in the lateral direction during racking of the needle bed, the pull-down member 47 in the movement path may be set to the “submerged” state in order to secure the movement path of the knitted fabric.

Next, in order to close the front and rear casings 22, the motor 84 is rotated to open and close the opening / closing cam 25 attached to the cam shaft 86 so that the opening / closing swing bracket 27 can be closed as shown in FIG. From the state, the tip is rotated so as to swing rightward. Then, the front opening / closing arm 29 of the front casing 22 rotates counterclockwise and the rear opening / closing arm 33 of the rear casing 22 rotates clockwise, and the front and rear casings 22 are respectively linked by the parallel links 21. It is drawn to the "closed" state. The knitted fabric capturing surface forming member 53 in which the energization to the solenoid 59 has been cut off and the engagement between the engaging piece 60 and the engaging portion 61 has been released can be moved up and down and the knitted fabric can be lowered by the knitted fabric capturing surface 19. , It is in a “pause” state in which it does not rise and fall.

The above-mentioned "pause" in which the casing 22 before and after this is pulled and the fabric lowering action by the fabric capturing surface 19 of the lowering member 47 in the "closed" state is not performed.
Energizes the solenoid 59 to move the engagement piece 60 as shown in FIG.
The state shown in FIG. 16B is tilted toward the engaging portion 61 from the state shown in FIG. 16B to the state shown in FIG. 16B, and the engaging piece 60 is engaged with the upper engaging part 61. Is slightly above the basic stroke S, that is, the pull-down member 47.
Is located slightly below the rotation locus of the cam ridge of the push-up cam 71. Therefore, even if the push-up cam 71 rotates, the lowering member 47 is formed by the cam ridge.
Is not pushed up, and the knitted fabric capturing surface forming member 53 is in the “rest” state. This rest state is set in a part that is within the knitting width and is not knitted by pattern knitting or the like.

Next, the state in which the knitted fabric lowering force by the knitted fabric catching surface 19 in the "closed" state in which the front and rear casings 22 are pulled "strong" will be described. In order to make the knitting fabric lowering force "strong", the lowering force adjusting cam 40 is rotated to swing the lowering force adjusting rocking bracket 42 so that the tip thereof is located at the leftmost position in the drawing, and the connection is established. An operating shaft 79 is provided via a rod 45, a rear arm 44 and an interlocking lever 77.
Is rotated. The rotation of the operation shaft 79 causes the operation lever 78 to rotate.
The front push-up lever 76 is
Is rotated clockwise, and the rear push-up lever 76 is rotated counterclockwise, and as shown in FIG. 18-A, the push-up action portion 76b of the push-up lever 76 is lowered to cause the pull-down tension adjusting spring 54 to move. The tension of the pull-down tension adjusting spring 54 acting on the spring receiving projection 55 is extended. The tension of the tension adjusting spring 54 and the pull-down member 4
Due to the weight of the fabric 7, the knitted fabric lowering force by the knitted fabric capturing surface 19 is in a "strong" state. In the above "strong" state, that is, in the state in which the tension of the tension adjusting spring 54 is applied, the tension is steplessly adjusted within the range of the tension of the tension adjusting spring 54 to lower the knitted fabric by the knitted fabric capturing surface 19. The power can be adjusted. The "strong" state is used when it is desired to repeat only a part of the knitting width and knit. At that time, the other parts that are not knitted are set to a “pause” state.

In order to set the knitting fabric lowering force by the knitted fabric catching surface 19 in the "closed" state in which the front and rear casings 22 are pulled to "medium", the lowering force adjusting cam 40 is rotated. The lowering force adjusting swing bracket 42 is swung to a position rightward from the “strong” state in FIG. 18 and leftward from FIG. 6. Then, the connecting rod 4
5, via the rear arm 44 and the interlocking lever 77
From the “strong” state of 8-A, the front operation shaft 79 is rotated clockwise and the rear operation shaft 79 is rotated counterclockwise. By the rotation of each of the operation shafts 79, the front operation swing shaft 82 is rotated in the clockwise direction, and the rear operation swing shaft 82 is rotated in the counterclockwise direction. As a result, the pull-down tension adjusting spring 54 in the extended state contracts, and the push-up action portion 76b of the push-up lever 76 is raised, so that the pull-down tension adjusting spring 54 does not act on the pull-down member 47. . Therefore, the reduction of the knitted fabric by the knitted fabric capturing surface 19 is “medium”. This "medium" state is used for general knitting.

Further, in order to reduce the fabric pulling force by the fabric catching surface 19 in the "closed" state in which the front and rear casings 22 are drawn, the "medium" state is further forwardly moved from the "middle" state. The operation shaft 79 is rotated clockwise and the rear operation shaft 79 is rotated counterclockwise, and the front swing lever 73 is rotated counterclockwise by the operation swing shaft 82 via the spiral spring 75. And the rear push-up lever 7
3 are rotated counterclockwise, respectively. Then, FIG.
As shown by -A, the spiral spring 75 provided on the base end portion 73a is pressed by the operation swing shaft 82 even after the distal end portion 73b of the push-up lever 73 contacts the push-up roller 56 of the pull-down member 47. State. Accordingly, the knitted fabric lowering force by the knitted fabric capturing surface 19 is a weight obtained by subtracting the pressing force of the spiral spring 75 from the weight of the lowering member 47 at the tip portion 73b, and the knitted fabric lowering force is “weak”. Knitted fabric capturing surface 1
The state in which the knitted fabric lowering force of No. 9 is set to "weak" is set when the knitted fabric and the bind-off processing such as edge processing are performed. The setting of the “strength”, “medium”, “weak”, and “pause” of the knitting fabric lowering force of the knitted fabric capturing surface 19 or the “deserted” state of the knitted fabric capturing surface 19 sinking is set in the knitted fabric. It is possible to set the knitting during knitting. For example, when changing the knitting fabric catching surface 19 from the state in which the knitting fabric lowering force is “medium” to a part of the pulling-down members 47, the front and rear casings 22 are set. The state is changed from “closed” to “opened” to set the knitted fabric capturing surface 19 to “submerged”.
"Dead" where the pull-down member 47 of the desired part is raised at 0
And return the front and rear casings 22 from “open” to “closed”. Then, a part of the pulling-down members 47 can be changed from the state where the knitting fabric pulling-down force is “medium” to the state where the knitted fabric capturing surface 19 sinks and “subsides”. In the case where the pulling-down roller device 6 is provided as in this example, when the above-described knitting fabric pulling-down force is switched from the “medium” state to the “submerged” state in which the knitted fabric capturing surface 19 sinks, the pulling-down roller device 6 is used. It is desirable that the knitted fabric is held and held. In the pulling-down device 7 of the present embodiment, a pair of pulling-down means is disposed before and after the knitted fabric passage 8 so that the pulling-down means provided for pulling down each of the knitted fabrics before and after forming the tubular knitted fabric is individually provided. The knitted fabric can be lowered even if the front body and the back body have different shapes or the number of courses when knitting a sweater or the like, for example.
In the above embodiment, the opening / closing mechanism 18 can be moved to the "open" position where the space between the knitted fabric capturing surfaces 19 of the pulling-down means 16 and 17 is widely opened. Thus, even when two set-up devices 5 are provided, a passage path for the set-up device to go up and down can be secured. However, when only one set-up device 5 is provided, If not provided, the opening / closing device 18 can be omitted. Further, in the above embodiment, one unit is constituted by five pulling-down members, and each pulling-down member is arranged with the phase of the cam ridge shifted so as to sequentially protrude from an end. The present invention can be carried out without departing from the spirit of the present invention, such as changing the number or changing the mounting position of the cam ridge on the drive shaft so that each pull-down member operates at a different timing (for example, at random). .

<Second Embodiment> FIG. 20 is a front view showing the knitted fabric lowering device 103 attached to the flat knitting machine 1 in a partially transparent view from the front of the flat knitting machine, and FIG. Line ii
1 shows a cross-sectional view in the direction of the arrow. Knitted fabric lowering device 10
3 is a front knitted fabric lowering portion 103f and a rear knitted fabric lowering portion 1
03b, and the front and rear knitted fabric lowering portions 103f,
3b is a front needle bed (FD, FU) disposed opposite to the front and rear,
The rear needle beds (BU, BD) are provided below each needle bed with a knitted fabric passing path 8 indicated by a dashed line extending below the mouth portion 5 of the needle bed (BU, BD) interposed therebetween. In the present embodiment, an example will be described in which a hook member for hooking a knitted fabric, for example, a pull-down claw is used as the knitted fabric capturing means, and the knitted fabric is hooked down from the surface side of the knitted fabric 108 and pulled down. The down claw bed 109 has a large number of accommodation grooves 137 for accommodating a down claw, which will be described later, on the back surface thereof.

The bed 109 extends in parallel in the longitudinal direction of the needle bed, and its both ends are connected to the main body bed (needle bed 3) 11
Projecting portion 1 of inverted T-shaped bracket 113 overhanging
13a and supported on a flat knitting machine. Reference numeral 115 in the drawing denotes a bracket for fixing the lower portion of the lower claw bed 109 to the main body bed 111 at two places in the center of the bed for preventing the lowering claw 109 from swaying. In the present specification, the side facing the knitted fabric passage route 8 will be described as the front, and the side not facing the back will be described as the back. Since the front and rear knitted fabric lowering portions 103f and 3b have the same structure, the rear knitted fabric lowering portion 103b will be described below, and the front knitted fabric lowering portion 103f.
The same reference numerals are given to portions corresponding to the lower knitted fabric lowering portion 103b.

The cam carriage 117 for lowering the knitted fabric is
The reciprocating operation of the lowering claw mounted on the lowering claw bed 109 is operated. The carriage 117 is guided by a drive guide rail 121 fixed to the pull-down claw bed 109, and is attached to a drive guide 119 that can travel in the longitudinal direction of the pull-down claw bed. One end 1 of this drive guide 119
Reference numeral 19a denotes a timing belt 127 stretched between pulleys 123 and 125 provided at both ends of the pull-down claw bed 109.
, A pulley 133 that is rotatably driven by a driving shaft of the motor 135,
Pulley 1 via timing belt 131 and pulley 129
23 so that the cam carriage 117 moves on the down claw bed. The cam carriage 117 reciprocates in the longitudinal direction of the pull-down claw bed 109 when the drive motor 135 is driven to rotate forward or reverse.

<Bed Structure> FIGS. 22 to 24 show the structure of the knitted fabric lowering portion. FIG. 22 shows the position (FIG. 22-A) where the pull-down claw capturing the knitted fabric has descended (retracted) and ascended (advanced).
22-B, and FIG. 23 shows the components mounted on the down claw bed 109. FIG. 24 shows a state in which the drive guide 119 is removed and the claw guide plate 18 is removed.
7 shows a view of the knitted fabric lowering portion in a state where a part of No. 7 is seen through from the back.

The down claw bed 109 has a large number of storage grooves 13.
7, a selector 140, a claw jack 150, and a pull-down claw 160 are mounted in each accommodation groove 137. The housing groove 137 includes a shallow groove 137a and a deep groove 137b. The upper side of the claw bed 109 in which the pull-down claw 160 is stored is formed as a shallow groove 137a, and the lower side in which the selector 140 is stored is formed as a deep groove 137b.

The claw jack 150 has a push-up arm 15 abutting against a step 165 of the pull-down claw 160 at the tip thereof when the claw jack 150 advances.
1. A branch arm 153 is formed by branching the main body 152 of the claw jack 150 behind the branch arm 153.
A bat 154 is formed on the back of the tip of No. 3. This bat 1
54 is hidden in the deep groove portion 137b at the position where the claw jack 150 is retracted in the accommodation groove, and is exposed outside the shallow groove portion 137a at the position where the claw jack 150 has advanced. Claw jack 1
Numeral 50 is disposed in a stacked state with the selector 140 in the housing groove, and a differential portion 155 is formed on the sliding contact surface of the claw jack 150 with the selector 140 so as to protrude into the housing surface of the selector 140.

The selector 140 is the first selector 14
0a and a second selector 140b, which have the same shape except for the position of the bat 147 formed on the back of the selector tail. Nail bed 1
09 in the odd-numbered accommodation groove from the left end of the first selector 1
40a is inserted into the even-numbered accommodation groove by the second selector 140b.
Respectively. The first selector 140a is selected when the knitted fabric lowering cam carriage 117 advances to the left, and the second selector 140b is selected when the cam carriage 117 is moved.
Is selected when traveling to the right.

At the leading end of the selector 140, a receiving portion 141 into which a substantially rectangular lower end portion 167 of a pull-down claw 160 described later is fitted, and a locking groove 171 cut out on the front of the pull-down claw bed 109 are engaged. Lock pawl 1 engaging with portion 173
42. A pair of upper and lower stoppers 143 and 144 are protruded from the center front side of the selector 140 at predetermined intervals, and a swing fulcrum 145 of the selector is formed therebetween. Bat 1 on the back of the selector
46, a bat 147, and a bat 148 are respectively formed, and can protrude out of the accommodation groove. As for the second selector 140b, the bats 147 and 148 are connected in one wide bat 149. The function of each of these bats will be described later.

The differential portion 155 of the claw jack 150 is positioned between the stoppers 143 and 144 of the selector 140, and the selector 140 is advanced and retracted by a cam means mounted on a knitted fabric lowering cam carriage 117 described later. Sometimes the claw jack 150 is raised and lowered by the selector 1
40 is delayed by the differential amount l. The pull-down claw 160 has a claw mounting portion 161 formed at a tip end thereof, and a main body portion of the claw 180 formed as a separate component is fitted into a mounting groove (not shown) of the claw mounting portion. The claw 180 is formed of a thin plate so that the claw tip 180a can enter the stitch and capture the knitted fabric.

A spring insertion portion 162 and a lower limit stopper 163 are formed on the rear side behind the claw mounting portion 161.
A step 165 is formed on the back side of the center of the step 4 in contact with the push-up arm 151 of the claw jack 150, and a swing fulcrum 166 is formed on the front in contact with the bottom wall of the accommodation groove. A coil spring 83 is mounted on the spring insertion portion 162.
The lower end 167 of the pull-down claw 160 is formed in a substantially rectangular shape so as to fit into the receiving portion 41 of the selector.
Reference numeral 38 is attached to the nail bed 109,
Selector 140, claw jack 15
Shows a holding plate that prevents 0 from falling off.

The distal end of the pull-down claw 160 has a claw guide plate 187 formed with a plate 185 attached to the upper edge of the drive guide rail 121 and a number of slits 188 for accommodating and guiding the pull-down claw 160 fixed to this plate 185. Is provided. The gap between the claw guide plates 187 of the front knitted fabric lowering portion 103f and the rear knitted fabric lowering portion 103b forming the knitted fabric passage route 8 is about 10 mm, and the knitted fabric is captured with the claws 180 exposed through the slits 188. Provide a gap where the front and rear claws do not interfere. Down claw 16
The forward / backward stroke of 0 is about 10 mm, but the stroke may be further increased. The number of pull-down claws does not need to be the same as the number of needles on the needle bed. For example, one may be provided for every 2 to 10 needles, that is, one for every 2 to 10 wales. .

<Cam Carriage> FIG. 25-A is a perspective view showing the cam arrangement of the knitted fabric lowering cam carriage 117, and FIG. 25-B is the direction of the arrow ii-ii in FIG. 25-A. FIG. The selector up cam 191 and the selector down cam 1 are located at the center of the cam plate 190.
92 are provided. The selector raising cam 191 includes an upper raising cam 191a engaging with the selector butt 146 and a lower raising cam 191 engaging with the selector butt 148.
b. A claw rest release presser cam 193 is provided on the top of the lower raising cam 191b, and selector selectors 100R and 100L are provided on both sides of the skirt of the raising cam 191b. The movable presser cams 101 and 103 and the fixed presser cam 10
2,104 are arranged.

A claw resting presser cam 194 is provided at the top of the selector upper raising cam 191a, and a pair of left and right claw jack holding cams 195 and 196 are provided along the upper edge of the selector lowering cam 191b. 197,
Reference numeral 198 denotes return cams provided at both ends of the cam plate.
Among the above-mentioned cams, the movable cam which is switched to the operation / non-operation position by an actuator such as a solenoid includes the pawl deactivation release presser cam 193 and the selector selector 10.
0, the movable presser cams 101 and 103 and the pawl pause presser 194.

Although the pawl jack holding cams 195 and 196 are constituted as swinging pressers, there is no actuator for driving themselves, and the swinging presser can swing upward with reference to the illustrated position. In such a case, a configuration is adopted in which the actuator is returned to the reference position by the urging means (not shown). The groove cam 107 of the selector butt 146 formed between the selector upper raising cam 191a and the lowering cam 192 is
The height is formed higher than the cam plate 190.
Reference numeral 109 indicates a cam slope.

The knitted fabric lowering cam carriage 117 reciprocates on the lowering claw bed 109, and the selector selector 1
Before the 00 reaches the selector 140, the return cam 197
Alternatively, when the 198 presses the bat 146, the selector 140 swings about the swing fulcrum 45 on the differential portion 55 of the claw jack 150. As a result, the bats 147 and 148 provided at the tail of the selector are exposed from the accommodation groove, and are returned to the protruding positions selectable by the selector 100 (return position).

[0062] Of the selector selectors 100 provided on the left and right, the selector selector 100R works when going to the right of the carriage, and the selector selector 100L works when going to the left of the carriage. The selector selection unit 100R includes a fixed presser 102 disposed in a lower stage and a movable (oscillating or retractable) presser 101 disposed in an upper stage. The fixed presser cam 102 presses the butt 147b of the second selector 140b at the return position shown in FIG. 3A and sinks it into the receiving groove to a position where it is not affected by the selector lowering cam 191b.

The movable presser cam 101 acts on the butt 147a of any of the first selectors 140a at the return position, and only the selector that has not been affected by the movable presser cam 101 engages with the subsequent selector lower raising cam 191b. I do. Similarly, selector selector 100
L has a fixed presser cam 104 arranged in the upper stage and a movable presser cam 103 arranged in the lower stage. The fixed presser cam 104 presses the butt of the first selector 140a at the return position to enter the groove. Sink. The movable presser cam 103 is in the second selector 140 in the return position.
The selector pressed against the bat 147b of b by the presser does not receive the action of the subsequent selector raising cam 191 and only the selector which has not received the pressing action of the selector engages the selector raising cam 191.

The above-described knitted fabric lowering cam carriage 11
7 is performed in association with the knitting operation of the knitting carriage 114. For example, when a stitch course on the front body side is formed, the lowering cam carriage 117 of the front knitting fabric lowering section 103f is driven, and The corresponding lowering claw acts to lower the front body. For example, when the front body 108f is turned from left to right and the rear body 108b is fed from right to left to supply a knitting yarn in a counterclockwise direction to knit the body in a tubular shape, the course knitting of the front body 108f is performed. When the operation is performed, the knitted fabric lowering cam carriage 117 of the front knitted fabric lowering unit 103f is moved rightward, and the even-numbered lowering claw 160 is operated.
Is turned to the left and the knitted fabric is lowered by operating the odd-numbered lowering claws.

When the knitting of the back body 108b is performed, the same operation as described above is performed in the back knitting fabric lowering section 103b. Each time the stitch course of each of the knitted fabrics 108f, 108b is knitted, the corresponding pull-down claw 160 is actuated to lower the knitted fabric. As described above, the lowering of the knitted fabric prevents the two claws from simultaneously releasing the knitted fabric because the respective lowering claws attached to the odd-numbered and even-numbered lowering claws 109 are sequentially activated with a time lag. The problem of the ground rising does not occur. If a specific part on the front side is to be knitted more than others, the number of actuations of the pull-down claw corresponding to that part is made larger than the others, and the part is lowered.

<Pattern 1> Second selector lowering operation FIGS. 26 to 28 show the retracting operation of the lowering claw 160 in each of the phases A to F of the knitted fabric lowering cam carriage 117 when the cam carriage 117 advances to the left. Is shown. In this case, the selector 100L selects the second selector 140b housed in the even-numbered housing groove and controls the advance / retreat.

(Position A) In the position A in FIG.
When the bat 146 is pressed by the action of the sword 97, the selector swings about the swing fulcrum 145, and the bat 14
9 (47b, 48) protrude out of the accommodation groove 137b.

(Position B) Next, position B indicates a state in which the selector has reached the selector selector 100L, and the movable presser 103 moves the butt 14 of the second selector 140b.
In this position, the bats 147b and 148 maintain the position exposed outside the groove in order to oscillate to the position where the butt 7b is not pressed. The swing control of the movable presser cam 103 can be performed for each selector. Only the selected second selector 140b maintains the positions where the butts 147b and 148 are projected out of the groove, and the selected second selector 140b is not selected. Is pressed by the movable presser cam 103 and submerged in the groove. At this time, all the first selectors 14
0a receives the action of the fixed presser cam 104, so that the butt 147a is submerged in the groove.

(Position C) In the next position C, the second selector selected at the position B and remaining outside the groove engages the butt 147b with the selector lowering cam 191b and rises to the middle of the cam slope. Indicates the status. In this position, the receiving portion 141 of the selector engages with the lower end portion 167 of the pull-down claw 160, and the lower stopper 144 of the selector 140b comes into contact with the differential portion 155 of the claw jack 150 to start pushing up the claw jack 150. As a result, the push-up arm 511 of the claw jack is connected to the step 1 of the pull-down claw.
It comes in contact with 65 and pushes down the claw. Selector 140
With the rise of b, the lower end 167 of the pull-down claw 160 is guided into the receiving portion by the slope 141a of the receiving portion 141 and is fitted deeply.

During this fitting, the pull-down pawl 160 is displaced in a clockwise direction about a pivot 166 provided at the center of the main body. As a result, the claw tip of the pull-down claw 160 releases the capture of the knitted fabric 108 in the knitted fabric passage path 8 and sinks into the slit 188 of the claw guide plate 187. The raising operation of the selector 140 in the initial stage is performed by the bat 14.
8 and the selector lower raising cam 191b is engaged, and the butt 146 of the selector is moved to the upper raising cam 191b.
It is raised to a position where it can engage with a. Selector 140
Is raised by the upper raising cam 191a.

(From the position C to the position D) During the period from the position C to the position D, the selector 140 is further raised by the action of the selector upper raising cam 191a. As the selector is raised, the pawl jack 150 and the pull-down pawl 160 are raised. As a result, when the butt 146 of the selector reaches the top of the selector upper raising cam 191a, the butt 154 of the claw jack is moved to the claw jack holding cam 195.
(D position). During this time, the coil spring 183 is compressed and deformed.

(E position) At the E position, the selector butt 14
6 descends. However, since the claw jack 150 prevents the butt 154 from descending by the claw jack holding cam 196, the engagement between the receiving portion 141 of the selector and the lower end portion 167 of the pull-down claw 160 is released. As a result, the pull-down claw 160 swings in the counterclockwise direction, and the claw 180 is exposed outside the slit 188 of the claw guide plate 187 to catch the knitted fabric in the knitted fabric passage 8.

(E to F positions) The F position is determined by the selector 14
0 and the state where the claw jack 150 is lowered to the original initial position. After catching the knitted fabric with the claw 180 at the position E, the pull-down claw 160 lowers the knitted fabric downward by the elastic force of the coil spring 183 inserted into the spring insertion portion 162. Symbols S, T, and U shown in FIG. 26 indicate the advance / retreat trajectories of the bats 146, 147, and 154 of the selector and the claw jack.

<Pattern 2> Second selector pull-down pause Next, the pawl 180 of the pull-down pawl 160 is moved to the pawl guide plate 18.
The case in which the knitting fabric is temporarily stopped in the slit 188 of No. 7 to suspend the lowering of the knitted fabric will be described. The pull-down claw 160 is placed in the rest state when the knitted fabric to be lowered does not exist in the knitted fabric passage path 8, for example, in the case of the front body, the case where the V-neck opening is knitted. Also in this case, the operation of the selectors A to C is performed in the same manner as described above. At the position C ′, the butt 146 of the selector 140b is sunk into the receiving groove under the action of the pause presser cam 194 as shown in FIG. 28-B.

At this time, the locking claw 42 of the selector is engaged with the engagement portion 173 of the locking groove 171 formed in the claw bed 109.
Therefore, the claw 180 of the pull-down claw 160 holds the swinging position hidden in the slit 188 and does not act on the knitted fabric. Even after the selector has passed the resting presser cam 194, the fitted state of the selector 140b and the lock groove 171 is continued, so that the butt 146 of the selector remains in the recessed state in the accommodation groove, and the action of the subsequent selector lowering cam 192 Not receive. Therefore, the cam carriage 11
7 after passing, selector 140, claw jack 150
And the pull-down claw 160 holds the state of FIG. 28-B.

<Pattern 3> Release of second selector pull-down pause Next, the pull-down claw 16 once placed in the pause state as described above
The case where the knitted fabric 108 is captured by releasing the pause of 0 will be described. Also in this case, the cam carriage 1
17 is performed when traveling to the left. The bat 148 of the selector 140b suspended on the previous course is C ''
When it reaches the position, as shown in FIG. 28-A, the pause release presser cam 193 is actuated and engaged with the bat 148 to swing the selector 140b clockwise.

As a result, the locking claw 142 of the selector is disengaged from the engaging portion 173 of the locking groove 171 and the butt 146 of the selector is exposed outside the accommodation groove. As a result, the selector butt 146 is lowered by the action of the subsequent selector lowering cam 192. The operation after the position C ″ is the same as the above positions D, E and F. At the position E, the knitted fabric is captured by the claw 180 of the pulling claw 160 and the knitted fabric is lowered. Although the operation of the pull-down claw relating to the second selector 140b has been described above, the operation of the pull-down claw relating to the first selector 140a is performed in a similar manner, except that the traveling direction of the knitted fabric lowering cam carriage 117 is different.

<Third Embodiment> Next, a modification of the present invention will be described. In this embodiment, the knitted fabric capturing means of the knitted fabric lowering device is constituted by a knitted fabric suction mechanism. This knitted fabric suction mechanism stretches an endless belt having a plurality of suction holes formed on a surface between rollers provided at intervals along a knitted fabric passing path, and attaches these assemblies to the knitted fabric passing path. The casing is supported in a casing having an opening on the side to be connected, and each casing is connected to a vacuum source such as a blower motor via a conduit. One of the rollers provided in each suction unit is configured as a driving roller, and a type in which an electric motor is mounted in the roller can be used. A large number of these single units are provided below the needle bed along the longitudinal direction of the knitted fabric passing path. Each suction mechanism
Similarly to the above-described embodiment, the knitted fabric is controlled in association with the knitting of the knitted fabric, and the knitted fabric is lowered.

In the above-described embodiment, the hook member for hooking the knitted fabric is constituted by a claw formed by a thin plate. Instead of this, a brush-like member having a large number of needles planted therein is used. And a plurality of stitches in the wale / course direction of the knitted fabric may be hooked with a needle. The operation of each pull-down claw is performed by the cam carriage traveling on the claw bed. Alternatively, for example, a drive means such as a linear actuator can be individually connected to each pull-down claw to control the drive. The present invention can be implemented without departing from the spirit of the present invention.

[0080]

As described above, according to the drawer of the present invention, when a knitted fabric knitted in a two-layer cross section, such as a tubular knitted fabric consisting of a front knitted fabric and a rear knitted fabric, is pulled down, the knitted fabric passes. The front knitting fabric lowering means provided on the front side of the knitted fabric works on the front knitted fabric, and the rear knitted fabric lowering means works on the rear knitted fabric. Also in the case of performing, it is possible to satisfactorily lower the knitted fabric with an appropriate lowering force.

In particular, a knitting fabric lowering device opening / closing mechanism for enabling the front knitting fabric lowering means and the rear knitting fabric lowering means to move in the contacting / separating direction in synchronization with each other, and a lowering force adjusting mechanism for adjusting the lowering force of the knitted fabric capturing surface Each knitting fabric lowering means is formed by arranging a plurality of pulling-down members in the longitudinal direction of the needle bed, and when the knitting fabric is lowered, the pulling-down members can be sequentially or individually lowered. In such a configuration, there is an advantage that the action of the knitted fabric capturing surface, the inactivity, the setting of the pulling force of the knitted fabric capturing surface, and the like can be combined in accordance with the type of the knitted fabric to set the optimal pulling force. For example, even when a hole is formed in a knitted fabric or when the knitted fabric is largely moved in the lateral direction by racking, the knitting of the knitted fabric can be performed smoothly by moving the pull-down member located at the relevant portion away from the knitted fabric and retracting. Can be done.

Also, since a large number of knitted fabric catching portions are arranged in the longitudinal direction of the needle bed and each knitted fabric catching portion is selectively or sequentially driven and controlled, a hole portion is formed in the knitted fabric. Even if the shape and the number of courses of the front body and the back body are not the same, the knitted fabric can be lowered with the optimum lowering force.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a flat knitting machine in which a knitted fabric lowering device according to a first embodiment is mounted on a flat knitting machine.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a schematic side view showing a mechanism for opening and closing a casing.

FIG. 4 is a schematic side view of an opening / closing mechanism and a pull-down force adjusting mechanism.

FIG. 5 is a schematic plan view of an opening / closing mechanism and a pull-down force adjusting mechanism.

FIG. 6 is a schematic side view showing a pulling force adjusting mechanism.

FIG. 7 is a schematic side view showing the operation of the mechanism of the knitted fabric lowering device including the lowering force adjusting mechanism.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is an exploded side view of the pull-down member.

FIG. 10 is a schematic side view of a retractable piece portion.

FIG. 11-A is a side view of a knitted fabric capturing surface, and FIG.
B is an enlarged view thereof, and FIG. 11-C is an enlarged plan view.

FIG. 12 is a side view showing a modified example of the knitted fabric capturing surface.

FIG. 13 is a side view showing still another modified example of the knitted fabric capturing surface.

FIG. 14-A is a side view of the push-up cam, FIG.
-B is a front view thereof.

FIG. 15-A is a side view of the push-up lever, FIG.
5-B is a plan view of the push-up lever, and FIG. 15-C is a front view of the push-up lever.

16A is a side view of the push-up lever, FIG.
6-B is a plan view of the push-up lever, and FIG. 16-C is a front view of the push-up lever.

FIG. 17-A is a side view of a state in which the knitted fabric capturing surface is retracted at a position near the upper limit, and FIG. 17-B is a side view of a state in which the knitted fabric capturing surface is retracted at a position near the upper limit. FIG.

18A is a side view showing a basic stroke of the knitted fabric capturing surface, and FIG. 18B is a front view showing a basic stroke of the knitted fabric capturing surface.

FIG. 19-A is a side view showing an operation when adjusting the amount of reduction of the knitted fabric capturing surface, and FIG. 19-B is a front view showing an operation when adjusting the amount of reduction of the knitted fabric capturing surface. is there.

FIG. 20 is a view showing a state in which the knitted fabric lowering device according to the second embodiment is attached to a flat knitting machine, partially seen through from the front of the flat knitting machine.

FIG. 21 is a sectional view taken along the line ii in FIG.

FIG. 22 is a cross-sectional view of the down claw bed, where 22-A shows a state where the down claw is lowered, and 22-B shows a state where it is raised.

FIG. 23 shows a side view of each component mounted on the down claw bed.

FIG. 24 is a view of a part of the down claw bed as viewed from the back.

FIG. 25 shows a knitted fabric lowering cam carriage.

FIG. 26 is a diagram showing a state in which the knitted fabric lowering cam carriage is moving leftward.

FIG. 27 is a view showing the reciprocating operation of the pull-down pawl in each of the phases A to F of the cam carriage in FIG. 24.

28-A shows the operating state of the pull-down pawl in the phase C "of the cam carriage in FIG. 24, and FIG. 28-B shows the operating state of the pull-down pawl in the phase C 'of the cam carriage in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Flat knitting machine, 3 ... Needle bed, 8 ... Knitted fabric passing path, 16 ... Front knitting fabric lowering means, 17 ... Rear knitting fabric lowering means, 18 ... Opening / closing mechanism, 19 Knitted fabric capturing surface, 20 ... Lowering force adjustment Mechanism, 2
4 knitting carriage, 47 pull down member, 48 lifting drive means, 49 pull down force adjusting means, 50 pull down member main body, 51 needle, 69 base material, 83 elastic member connecting portion, 1
09 ... lowering claw bed, 111 ... body bed, 117 ...
Cam carriage for lowering the knitted fabric, 119 ... drive guide, 1
21: drive guide rail, 135: drive motor, 137
... accommodation groove, 140 ... selector, 140a ... first selector, 140b ... second selector, 173 ... engaging part, 1
42: locking claw, 143, 144: stopper, 14
6,147,149 ... bat, 150 ... claw jack, 1
Reference numeral 51: push-up arm, 153, branch arm, 154, bat, 155, differential portion, 160, pull-down claw, 161, claw attachment portion, 165, step portion, 166, swing fulcrum, 171, locking groove, 180 ... claw, 183 ... coil spring, 185 ...
Plate, 187: claw guide plate, 188: slit, 190: cam plate, 191: selector up cam, 192: selector down cam, 193: claw rest release presser cam, 94: claw rest presser cam, 95,
96: claw jack holding cam, 197, 198: return cam, 100: selector selector, 101, 103: movable presser cam, 102, 104: fixed presser cam

Claims (10)

[Claims] A knitted fabric is pulled down with a knitted fabric passing path formed below at least a pair of front and rear flat knitting machines provided with a pair of front and rear teeth facing each other. A knitted fabric lowering device disposed before and after the front knitted fabric lowering means for capturing and lowering only the front knitted fabric of the knitted fabric in the knitted fabric passage path, and only the rear knitted fabric. The knitting fabric lowering means for capturing and lowering, and a lowering force adjusting mechanism for adjusting the lowering force of each knitting fabric lowering means are provided, and each knitting fabric lowering means includes a plurality of lowering members in the longitudinal direction of the needle bed. A knitting fabric lowering device for a flat knitting machine, wherein the knitting fabric lowering devices are formed side by side, and the lowering members are configured to be capable of individually or individually lowering the knitted fabric during a knitting fabric lowering operation. 2. A knitted fabric lowering device opening / closing mechanism for operating these means in the approaching / separating direction in conjunction with or independently of the front knitting fabric lowering means and the rear knitting fabric lowering means. Item 2. A knitting fabric lowering device in the flat knitting machine according to Item 1. 3. The pull-down member of the pull-down means for a knitted fabric is provided with a knitted fabric catching surface at a portion of the pulling-down member body facing the knitted fabric. 2. The knitted fabric is sometimes open to a shape.
Or a knitted fabric lowering device in the flat knitting machine according to claim 2. 4. The knitted fabric catching surface of the knitted fabric pulling-down means is pressed and urged in the projecting direction with respect to the pulling-down member main body. 4. The apparatus for lowering a knitted fabric in a flat knitting machine according to claim 3, wherein the apparatus is configured to be able to retreat so as to reduce the number of the knitted fabrics. 5. The knitted fabric capturing surface is formed by a plurality of needles implanted perpendicularly or at a predetermined angle to the surface of the base material, and an intermediate position of the plurality of needles or a portion near the tip is bent obliquely downward. The apparatus for lowering a knitted fabric in a flat knitting machine according to claim 3 or 4, wherein: 6. The flat knitting machine according to claim 3, wherein the knitted fabric capturing surface is attached to the pulling member main body via an elastic material. apparatus. 7. A knitted fabric lowering surface of a knitted fabric capturing surface by connecting a pull-down member and a pull-down force adjusting means with an elastic member and changing an elastic force of the elastic member by changing a position of an elastic member connecting portion of the pull-down force adjusting means. The knitting fabric lowering device in a flat knitting machine according to claim 5, wherein the force is changeable. 8. The lowering action portion is formed by a lowering claw provided in parallel with the longitudinal direction of the needle bed. The lowering means of the lowering claw includes a lowering claw bed, a selector mounted on a plurality of receiving grooves formed in the bed, and a lowering means. A claw jack, a lowering claw, an urging means for urging the lowering claw downward, a carriage reciprocating in the width direction of the lowering claw bed, and a selecting means mounted on the carriage and selecting any of the lowering claws, 2. The apparatus according to claim 1, further comprising a carriage having a cam for raising the pull-down claw selected by the selector.
4. The lowering device for a flat knitting machine according to item 1. 9. A pull-down pawl is urged downward, and the selector and the pull-down pawl are engaged with each other at an engaging portion, whereby the pawl tip swings in a direction away from the knitted fabric, thereby moving the pawl into the knitted fabric. Release claw, then raise the pull-down claw while maintaining the engagement between the selector and the pull-down claw, and then lower the selector to release the engagement with the pull-down claw to knit the pull-down claw. The lowering device for a flat knitting machine according to claim 8, wherein the knitting fabric is captured by swinging the knitted fabric to the side. 10. The flat knitting machine lowering device according to claim 3, wherein a suction means is provided on the knitted fabric capturing surface, and the knitted fabric is sucked by the suction means.