JP3757036B2 - Knitting fabric lowering device in flat knitting machine. - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a knitted fabric lowering device provided in a flat knitting machine, and in particular, a cross section composed of a front knitted fabric portion and a rear knitted fabric portion like a tubular knitted fabric using a flat knitting machine. The present invention relates to a knitted fabric lowering apparatus for lowering a knitted fabric having a two-layer structure.
[0002]
[Prior art]
  The flat knitting machine has at least a pair of needle beds arranged opposite to each other in the front and back, and a pulling device for pulling down the knitted fabric knitted with the knitting needles on the needle bed is provided below the tooth opening of the needle bed. For example, Japanese Patent Publication No. 57-55815 discloses a knitted fabric lowering device that performs uniform lowering particularly over the entire width of the knitted fabric and corresponds to molding knitting and three-dimensional knitting.
[0003]
  The pulling device disclosed in the above publication is of a type that grips the knitted fabric by providing a drive flap and a knitted fabric contact surface facing the front and back of the passage of the knitted fabric below the mouth, and in the longitudinal direction of the needle bed. A plurality of drive flaps, which are preloaded with springs, are selectively operated by the lifting device as gripping portions that can swing within a limited range around the extending swing shaft, and are formed when the drive flap is lowered. While holding the knitted fabric between the free edge of the drive flap and the knitted fabric contact surface, the knitted fabric is pulled down along the knitted fabric contact surface.
[0004]
  In the above-described pulling-down device, since the knitted fabric is gripped by the drive flaps and the knitted fabric contact surface provided before and after the knitted fabric passage path, the knitted fabric is flexible when the knitted fabric is a single layer knitted fabric. As a result of this, even a three-dimensional knitted fabric can guarantee the desired uniform and reliable withdrawal over the entire width of the knitted fabric.
[0005]
  Recently, the front and back of knitted clothing such as sweaters are connected to each other at both ends of the knitting width and knitted into a cylindrical shape with a two-layer structure, eliminating the sewing process after knitting and expanding and contracting. The production method of a non-sewn knit that obtains knit clothing rich in nature has been attracting attention.
[0006]
  However, the shape and number of courses of the front and back that are knitted in a cylindrical shape are not necessarily symmetrical in the front-rear direction, and it is necessary to pull down the front and rear knitted fabrics accordingly. The knitted fabric could not be pulled down sufficiently with the pulling device of the structure.
[0007]
[Problems to be solved by the invention]
  An object of the present invention is to provide a pulling apparatus that can be particularly employed for individually pulling down each knitted fabric before and after a knitted fabric that is knitted in a two-layer cross section like a cylindrical knitted fabric. To do.
[0008]
[Means for Solving the Problems]
  In order to achieve the above object, in the present invention, the knitted fabric passing formed below the mouth part of a flat knitting machine in which at least a pair of front and rear needle beds are arranged with the mouth parts of the needle bed facing each other. A knitted fabric lowering device disposed at the front and rear to lower a knitted fabric knitted in a cylindrical shape between a front knitted fabric and a rear knitted fabric across the path from the front and rear thereof, The pulling means for the front knitted fabric that acts only on the front knitted fabric of the cylindrical knitted fabric and captures and pulls down the front knitted fabric portion, and acts on only the rear knitted fabric and captures the rear knitted fabric portion. A lower knitting fabric lowering means and a lowering force adjusting mechanism for adjusting the lowering force of each knitted fabric lowering means. Each knitted fabric lowering means has a plurality of lowering members arranged in the longitudinal direction of the needle bed. Formed and when the knitted fabric is lowered, Linked to knitting fabric do itPull-down members one after another or individuallyThe front knitted fabric is driven by the lowering member of the lower knitting means for the front knitted fabric and the rear knitting by the lowering member of the lowering means for the rear knitted fabric, without being held by the front and rear knitting fabric lowering means. Each land individuallyIt is characterized in that it can be pulled down.
[0009]
  Accordingly, the knitted fabrics that are knitted in the cylindrical shape between the front knitted fabric and the rear knitted fabric at the front and back needle beds of the flat knitting machine are respectively pulled down by the individual knitted fabric lowering means. Even if they are different, the knitted fabric is properly lowered. The knitted fabric lowering mechanism is characterized by the provision of a knitted fabric lowering device opening / closing mechanism that operates in conjunction with the front knitted fabric lowering means and the rear knitted fabric lowering means or independently to move these means in the approaching / separating direction. The lowering action part of the means is composed of an elevating member having a knitted fabric catching surface at a portion facing the knitted fabric, and the knitted fabric catching surface has a shape that catches the knitted fabric when descending and opens the knitted fabric when raised. Also features. Further, the knitted fabric capturing surface is attached to the pull-down member main body via an elastic material.
[0010]
  In this case, the lifting member simply moves up and down on the same surface.TubularThe knitted fabric is captured and released, and even if a lateral force is applied to the knitted fabric, such as racking, the knitted fabric is not damaged.TubularThe knitted fabric can be removed from the knitted fabric capturing surface. The knitted fabric catching surface of the knitting fabric lowering means is pressed and urged in the protruding direction with respect to the lowering member main body so that it can be stored in a position where it does not protrude from the side of the knitted fabric of the lowering member main body or the protruding amount is reduced when it is inactive. Configured to be retreatable. In such a case, the knitted fabric catching surface is prevented from touching the knitted fabric or the latching device at the start of knitting when the knitted fabric pull-down means is inactive.
[0011]
  The knitted fabric capturing surface is formed of a plurality of needles implanted perpendicularly to the surface of the base material or at a predetermined angle, and an intermediate position or a tip end portion of the plurality of needles is bent obliquely downward. In such a case, the knitted fabric is automatically captured and released simply by moving the knitted fabric capturing surface up and down on the same surface.
[0012]
  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 can be changed by changing the position of the elastic member connecting portion of the pull-down force adjusting means so that the knitted fabric pull-down force on the knitted fabric catching surface can be changed. Configured. In such a configuration, the knitted fabric lowering force of the knitted fabric capturing surface can be arbitrarily set in accordance with the knitting of the tubular knitted fabric.
[0013]
  The lowering means includes a lowering claw bed provided in parallel with the needle bed longitudinal direction, a selector, a lowering claw jack, a lowering claw, and a biasing means for biasing the lowering claw downward. A carriage that reciprocates in the width direction of the lowering claw bed, a selection unit that is mounted on the carriage and that selects any of the lowering claws, and a cam unit that raises the lowering claw selected by the selection unit. Included in the configuration.
[0014]
  In addition, the lower pawl is urged downward, and the engaging portion between the selector and the lower pawl engages with each other so that the tip of the pawl is moved.TubularSwing away from the knitted fabric to release the claw from the knitted fabric, then raise the lowering claw while maintaining the engagement between the selector and the lowering claw, then lower the selector and lower the claw The knitted fabric is captured by swinging the claw of the lowering claw toward the knitted fabric side by releasing the engagement with the knitted fabric.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, a preferred embodiment of the present invention will be described based on parts.
First Embodiment FIG. 1 is a front view in which a portion of a flat knitting machine is cut out, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. Show. This flat knitting machine 1 accommodates a knitting needle 2 in a needle bed 3 so as to be slidable forward and backward, and arranges the needle bed 3 in the front and back with the tooth mouth portions 4 facing each other. The set-up device 5 that applies a downward tension to the knitted fabric until the knitted fabric reaches a predetermined length by lowering the knitting yarn at the time, and the knitted fabric lowered to a predetermined length by the set-up device 5 A pull-down roller device 6 of a type that is sandwiched between rollers and pulled down, and a knitted fabric lowering device 7 that pulls down the knitted fabric in cooperation with the pull-down roller device 6 or independently are provided.
[0016]
  The set-up device 5, the pull-down roller device 6, and the knitted fabric pull-down device 7 are provided between the tooth mouth portions 4 of the front needle bed (FD, FU) and the rear needle bed (BU, BD) disposed opposite to each other in the front-rear direction. It is provided below each needle bed with the knitted fabric passage route 8 indicated by the one-dot chain line in FIG. In the knitted fabric lowering device 7 of the present embodiment, a pair of knitted fabric lowering means 16 and 17 are provided on the front and rear sides of the knitted fabric passage path 8 below the mouth portion 4, and the knitted fabric knitted in a cylindrical shape. However, it is of a type that can be advantageously reduced.
  The tubular knitted fabric referred to here is, for example, knitted in a state in which the knitted fabric of the front body is attached to the front needle bed and the knitted fabric of the back body is attached to the rear needle bed and both the knitted fabrics are connected at both ends thereof. This means a knitted fabric, where one pulling device 7 pulls down only the knitted fabric of the front body, and the other pulling device 7 pulls down only the knitted fabric of the back body. 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 the hook members 9 from the position below the pulling roller device 6 to the position above the front and rear knitting needles. An elevating mechanism (not shown) for elevating and lowering is provided.
[0017]
  The pull-down roller device 6 is swingable with a pair of front and rear shafts 11 pivoted between the left and right frames 10 and 10 of the flat knitting machine so that an “L” -shaped bracket 12 faces each other. The lowering roller 13 is pivotally supported on the upper end portion of the bracket 12 so as to be pivotable, and the front and rear lowering rollers 13 and 13 can be rotationally driven by a rotating means (not shown). The ends facing each other on the knitted fabric passage path 8 side of the bracket 12 are connected by the link plate 14, and one bracket 12 is rotated by the rotation lever 15 so that the front and rear pulling rollers 13 and 13 are in contact with each other. It can swing in the direction of separation.
[0018]
  The knitted fabric lowering device 7 captures only the front knitted fabric in the knitted fabric passage 8 and can pull down the front knitted fabric lowering means 16 and the rear knitted fabric capable of capturing and lowering only the rear knitted fabric. A ground pulling means 17, a knitted fabric pulling device opening / closing mechanism (hereinafter simply referred to as an opening / closing mechanism) 18 for moving both the knitted fabric pulling means 16, 17 in a direction to contact and separate from the knitted fabric of the knitted fabric passing path 8, The knitted fabric pulling means 16/17 includes a pulling force adjusting mechanism 20 that lifts and lowers a knitted fabric catching surface 19 to be described later and adjusts the pulling force. Each of the front knitted fabric lowering means 16 and the rear knitted fabric lowering means 17 is incorporated in front and rear casings 22 and 22 that can be moved in the contact and separation direction by a parallel link 21 described later. That is, the movement of the front and rear casings 22 and 22 includes a “closed” state in which the knitted fabric catching surfaces 19 and 19 facing each other are narrowed and a “closed” state in which the knitted fabric pulling down function is not widely performed. Will be moved to.
[0019]
  The opening / closing mechanism 18 includes a motor 84 whose rotation is controlled by a control device (not shown) for controlling the knitting of the flat knitting machine as shown in FIGS. 1 and 3, and the rotation of the motor 84 is transmitted via the gear transmission mechanism 85. The cam shaft 86 that is transmitted and rotated, the open / close cam 25 attached to the cam shaft 86, the open / close swing bracket 27 that swings by sliding the roller 26 against the open / close cam 25, and the open / close swing An inverted “L” -shaped front opening / closing arm 29 pivotally supported on the front pivot shaft 30 by an opening / closing rod 28 connected to the bracket 27, and a front opening / closing arm 29 symmetrical to the knitted fabric passage path 8. In addition, an inverted “L” -shaped rear opening / closing arm 33 and an interlocking plate 34 for connecting the ends of the both opening / closing arms 29, 33 on the knitted fabric passage route 8 side are provided. The open / close cam 25 swings the open / close swing bracket 27 in the counterclockwise direction in the drawing to swing the front and rear casings 22 and 22 in the clockwise direction with the opening cam surface separating the casings 22 and 22 as shown in FIG. And a closing cam surface in which the space between the front and rear casings 22 and 22 is narrowed.
[0020]
  As shown in FIGS. 4 and 5, each inverted “L” corner portion of the front opening / closing arm 29 and the rear opening / closing arm 33 has a driving motor 87. It is pivotally supported by 87 output conduction shafts 30 and 30 in a rotatable manner. The front opening / closing arm 29 pivotally supports the end portion 70a of the driving shaft 70 on the front side of the lowering 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 end 70a of the rear drive shaft 70 pivotally supported by the rear casing 22 is pivotally supported at the lower end of the open / close arm 33, respectively.
[0021]
  The parallel link 21 for moving the casings 22 and 22 in the contact / separation direction is composed of the end portion 70a side portion of the front opening / closing arm 29 and the link plate 38 provided in parallel thereto, and the parallel link 21 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 thereto (see FIG. 3).
[0022]
  The pull-down force adjusting mechanism 20 includes a motor 84 whose rotation is controlled by a control signal from a control device (not shown) for controlling the knitting of the flat knitting machine 1 as shown in FIG. 6, and the rotation of the motor 84 is a gear. A cam shaft 86 that is transmitted via the transmission mechanism 85 and is rotationally driven, a pulling force adjusting cam 40 that is fixed to the cam shaft 86 and rotates along with the opening / closing cam 25, and a sliding roller on the pulling force adjusting cam 40. A pull-down force adjusting bracket 42 slidably contacted with 41 and an intermediate portion pivotally supported by the output transmission shaft 30 and symmetrical with the knitted fabric passage path 8 sandwiched between the front and rear casings 22 and 22. A connecting rod that can be adjusted in length to connect the front arm 43 and the rear arm 44 in the shape of a “f” disposed at the position, and the lower end of the rear arm 44 and the upper end of the pull-down force adjusting bracket 42. 45 and knitted fabric passage route It is constituted by a linkage plate 46 for connecting together the ends of the arms 43, 44 side.
[0023]
  Further, at the lower end portions of the arms 43 and 44, the raising / lowering drive means 48 for raising and lowering the lowering members 47 and 47 incorporated in the front and rear casings 22 and 22, and the lowering force adjustment for setting the lowering force of the lowering members 47 and 47. Means 49 are provided (see FIGS. 7 and 8). A plurality of the lowering members 47 are formed side by side along the longitudinal direction of the front and rear needle beds 3, 3. Each of the lowering members 47 includes a plastic pulling member main body 50 formed into a substantially rectangular shape by injection molding. The knitted fabric catching surface forming member 53 mounted in the pulling member main body 50 is provided (see FIG. 9).
[0024]
  The pull-down member main body 50 forms a storage space 52 for the knitted fabric catching surface forming member 53 in the upper half of the pull-down member main body 50, and is used for a spring receiving that engages the upper end of the pull-down tension adjusting spring 54 on one side surface of the storage space 52. A protrusion 55 is formed 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 engaging portion 61 that engages with an engaging piece 60 of a solenoid 59, which will be described later, is formed in two upper and lower stages on the inner surface of the lower side of the lowering body 50, and a push-up roller is provided at the lower end of the lowering member body 50. 56 is arranged, and the raising / lowering driving means 48 and the pulling-down force adjusting means 49 act on the push-up roller 56 so that the pulling-down portion main body 50 is moved up and down.
[0025]
  The knitted fabric capturing surface forming member 53 is formed of a relatively heavy synthetic resin, and is stored in the storage space 52 of the pulling member main body 50 in a state where the knitted fabric capturing surface is formed on the surface portion thereof. The knitted fabric catching surface forming member 53 is secured by a protector 50 a attached to the lower half of the pulling member main body 50. The solenoid 59 is provided on the back surface of the sliding bearing 58 fixed to the knitted fabric passage path 8 side of the casing 22 as shown in FIGS. 7 and 8. Next, the operation of the solenoid 59 will be described.
[0026]
  The solenoid 59 is controlled to be turned on and off by a control signal from the control device. Normally, the energization is cut off and the solenoid 59 is turned off, and the engagement piece 60 of the solenoid 59 is provided on the back side of the pulling member main body 50. The lowering member main body 50 can be slid in the vertical direction without being engaged with the joint portion 61. When the solenoid 59 is energized and turned ON, the engagement piece 60 of the solenoid 59 is in a state of being engaged with either the upper or lower engagement portion 61 provided in the pulling-down member body 50 in the engagement direction.
[0027]
  When the knitted fabric catching surface forming member 53 in which the engagement piece 60 of the solenoid 59 is engaged with the lower engaging portion 61 is raised to the vicinity of the upper limit, the knitted fabric catching surface 19 is sunk on the casing 22 side. When the engagement piece 60 of the solenoid 59 is engaged with the upper engagement portion 61, the knitted fabric catching surface 19 protrudes and enters a “pause” state in which it does not move up and down. Although the “immersion” and “pause” states will be described in detail later, in this way, the stop of the vertical sliding motion of the pull-down member 47 and the release of the stop are controlled by turning the solenoid 59 on and off.
[0028]
  As shown in FIGS. 7 to 8, the knitted fabric catching surface forming member 53 is provided with spring storing recesses 62 at the four corners of the back surface thereof, and the coil spring 63 mounted in the spring storing recess 62 is a pulling member main body. The knitted fabric catching surface 19 is urged so that the surface of the knitted fabric catching surface 19 protrudes toward the knitted fabric passage path 8, which is attached to the spring receiving projection 64 protruding from the bottom of the 50 storage space 52. In this way, the knitted fabric catching surface 19 pushed and urged by the coil springs 63 provided at the four corners of the back surface of the knitted fabric catching surface forming member 53 changes the knitting structure during knitting to form a pattern. Even when the thickness of the knitted fabric increases or decreases, or when the knitting yarn count is changed, the tension of the coil spring 63 causes the knitted fabric capturing surface 19 to be properly engaged with or released from the knitted fabric being knitted. I do. The knitted fabric catching surface 19 pushed and urged by the tension of the coil spring 63 is applied to the knitted fabric catching surface 19 when a lateral force is applied to the knitted fabric by racking the needle bed 3 or reducing the stitches of the knitted fabric. Is inclined in the direction in which the knitted fabric is easily detached against the coil spring 63, and in combination with the shape of a needle 51 described later, also acts to release the knitted fabric from the knitted fabric capturing surface 19.
[0029]
  A roller 65 is provided at the center of the back surface of the knitted fabric catching surface forming member 53 in a state of being supported horizontally with a space between the roller 65 and the back surface. On the other hand, from the front and rear casings 22 and 22 side, downward hook-shaped lead-in pieces 66 are provided which enter the space between the roller 65 and the center of the back surface of the knitted fabric catching surface forming member 53. As shown in FIG. 10, the hook-shaped lead-in piece 66 has a hook portion 66a that protrudes downward on the surface portion, and is fixed from the upper end of the hook portion 66a to the rear surface to fit into the upper end space portion of the casing 22. A piece 66b is formed, and a fixing portion 66c that abuts the front upper edge portion 22a of the casing 22 and stabilizes the retracting piece 66 is integrally formed between the hook portion 66a and the fixing piece 66b. .
[0030]
  Accordingly, the fixed piece 66b of the retractable piece 66 is fitted to the upper end portion of the casing 22, and the fixed portion 66c is brought into contact with the front upper edge of the casing 22, so that the hook-shaped retracted piece 66 is firmly positioned near the upper end portion of the casing 22. Therefore, when the lowering member 47 is raised to the vicinity of the uppermost position, the roller 65 is drawn to the casing 22 side by the downward hook-shaped pulling piece 66 protruding from the casing 22, as shown in FIG. Further, the knitted fabric catching surface 19 sinks to the casing 22 side against the elastic force of the coil spring 63.
[0031]
  As shown in FIG. 11, the knitted fabric catching surface 19 includes a flexible base 69 in which a canvas 67 is coated with rubber 68 or the like, and a needle 51 that is densely planted on the base 69. The needle 51 portion protruding from 69 is planted one end upward with respect to the surface of the base material 69, and the middle portion thereof is bent so that the tip portion is downward, and the upper edge of the needle 51 is chamfered, The side part is cut and formed into a tapered shape. When the needle 51 of the knitted fabric capturing surface 19 is formed in this way, as shown in FIG. 11-B, the tension of the knitted fabric bites firmly with respect to the needle 51 upward (direction C in the figure), and downward ( The knitted fabric is released without resistance to the tension in the direction D).
[0032]
  11B, when the tension of the knitted fabric acts in the lateral direction (E direction in the figure) with respect to the needle 51, the knitted fabric is needled by the elastic deformation of the base material 69 and the deflection of the needle 51. Release from 51. Here, the needle 51 may be formed perpendicularly to the surface of the base material 69 and then bent at the intermediate portion so that the tip is formed obliquely downward, as shown in FIG. Needless to say, the needle 51 can be extended from the plate member, or the needle 51 forming the knitted fabric catching surface 19 can be formed in a sawtooth shape from the plate member as shown in FIG. . When the needle 51 portion is formed from a plate-like member as shown in FIGS. 12 and 13, it can be integrally formed with a synthetic resin.
[0033]
  Next, the lifting force adjusting mechanism 20 that adjusts the lifting and lowering of the lowering member 47 incorporated in each casing 22 and 22 and the amount of the lifting and lowering will be described. The pulling force adjusting mechanism 20 is driven to move up and down as shown in FIGS. It comprises means 48 and pull-down force adjusting means 49. As shown in FIGS. 4 and 5, the elevating drive means 48 is provided in a pair of front and rear drive motors 87 on the left side of the frame 10, and in the front and rear casings 22 and 22, respectively, and an end portion 70a is provided in the front and rear open / close arms. 29, a hexagonal drive shaft 70, gear transmission means 88 for transmitting the rotation of the drive motor 87 to the drive shaft 70 via the output transmission shaft 30, and each pulling member as shown in FIGS. 47, a push-up cam 71 provided on the drive shaft 70 corresponding to the push-up roller 56, a push-up lever 73 acting on the push-up roller 56, and a push-up roller 74 provided at an intermediate portion of the push-up lever 73. Become.
[0034]
  As shown in FIG. 14, the push-up cam 71 has a cam crest 71b formed from a base end portion in which a hexagonal hole 71a that fits the hexagonal drive shaft 70 is formed. .. Are arranged corresponding to each of the pull-down members 47, 47... And fitted to the hexagonal drive shaft 70 with the phases of adjacent cam peaks 71b being sequentially shifted by 60 degrees. It is attached. As shown in FIGS. 15A to 15C, the push-up lever 73 is provided with a slit 89 in the middle of which the cam crest 71b of the push-up cam 71 rotates, and the push-up roller 74 is rotatable in the slit 89. It is arranged.
[0035]
  The push-up lever 73 is pivotally supported by a pivot shaft 72 (see FIGS. 7 and 8) having a base end portion 73a provided in parallel with the drive shaft 70, and a vine spring 75 is provided at the base end portion 73a. At the same time, a distal end portion 73 b extending in an arch shape from the base end portion 73 a acts on the push-up roller 56. The vine spring 75 works together with the pulling tension adjusting spring 54 to adjust the pulling force of the knitted fabric catching surface 19. The push-up cam 71 and the push-up lever 73 are formed in a state in which five of the pull-down members 47 arranged in the longitudinal direction of the needle bed 3 are set as one unit and the phases of the pull-down members 47, 47. Since the hexagonal drive shaft 70 is fitted and attached, five of the six sides of the hexagonal drive shaft 70 are formed with cam peaks 71b, and the remaining one side of the drive shaft 70 is any of the surfaces. The push-up lever 73 is also not operated to swing, that is, it becomes a rest surface on which the drive motor 87 stops. When the drive motor 87 is stopped on this resting surface, all the pull-down members 47 are kept in a state in which the knitted fabric capturing surface 19 engages the knitted fabric, and the knitted fabric is pulled down by the knitted fabric capturing surface 19. . The rotational speed of the drive motor 87 can be changed and stopped to match the relationship between the knitting speed of the knitted fabric and 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 slow, the drive motor 87 is not always rotated and is stopped at the rest position or rotated at a low speed. Conversely, when the knitting speed of the knitted fabric is high, the drive motor 87 is Always rotate.
[0036]
  The pull-down force adjusting means 49 is formed by a push-up lever 76 that is rotated by the front arm 43 and the rear arm 44 of the pull-down force adjusting mechanism 20. This push-up lever 76 pushes up the push-up roller 56 of the pull-down member 47 to the tip end extending in an arch form from the pivotal support 76a pivotally supported by the pivotal support shaft 72 of the push-up lever 73 as shown in FIG. A push-up action portion 76b is formed, and a spring receiving projection 83 is formed on the side surface portion of the push-up action portion 76b. A bifurcated portion 76c operated by the operating swing shaft 82 of the pull-down force adjusting mechanism 20 is formed below the pivotal support portion 76a. As shown in FIGS. 6 and 7, the operating swing shaft 82 is disposed at the upper end portion of the operating lever 78 attached to the operating shaft 79, and the operating lever 78 includes both arms of the pull-down force adjusting mechanism 20. A slider 80 at the end of the interlocking lever 77 attached to the operation shaft 79 is slidably fitted in a long hole 81 formed at the lower end of 43 and 44, and the motor 84 is driven and controlled. When the front arm 43 and the rear arm 44 are swung through the gear transmission mechanism 85, the cam shaft 86, the pulling force adjusting cam 40, the pulling force adjusting bracket 42, and the connecting rod 45, the interlocking lever 77 is operated. The shaft 79 is rotated (see FIG. 6).
[0037]
  The opening / closing mechanism 18 configured as described above opens and closes the casings 22 and 22, and the pulling-down force adjusting mechanism 20 controls the pull-down amount of the pull-down member 47 and adjusts the pull-down force. 25 and the pull-down force adjusting cam 40 are the same camshaft86It is attached to and rotates together. Therefore, the combination of these cams 25 and 40 operates the casings 22 and 22 in an open state and a closed state. When the casings 22 and 22 are in the closed state, the pull-down force adjusting mechanism 20 pulls down the pull-down member 47. The pulling-down force is adjusted to four levels of “strong”, “medium”, “weak” and “pause”.
[0038]
  Next, the opening / closing of the casings 22 and 22 and the four levels of pulling force of the pulling member 47 when the casings 22 and 22 are closed will be described. The amount (S shown in FIG. 18) that is pushed up by the cam crest of the push-up cam 71 is explained as a basic stroke. The open state of the casing 22 means a state in which the knitted fabric passage path 8 through which the knitted fabric between the front and rear casings 22 and 22 in which the knitted fabric capturing surface 19 is incorporated passes is separated, and the opening / closing mechanism 18 is set as follows. Manipulate.
[0039]
  First, the open / close swing bracket 27 is rotated by rotating the open / close cam 25 via the gear transmission mechanism 85 and the cam shaft 86 by a motor 84 that is rotationally controlled by a control device (not shown) that controls the knitting of the flat knitting machine 1. Is pivoted counterclockwise in FIG. 3, the front opening / closing arm 29 of the front casing 22 is rotated in the clockwise direction, and the rear opening / closing arm 33 of the rear casing 22 is rotated in the counterclockwise direction. As a result, the front and rear casings 22 and 22 are moved away from each other by the parallel links 21 to be in the “open” state in FIGS. 2 and 3. As a result, the knitted fabric passage path 8 between the front and rear casings 22 opens widely by the action of the parallel link 21, and the hook portion 9 of the set-up device 5 can be raised to the tooth opening portion 4.
[0040]
  At this time, the pull-down force adjusting cam 40 is rotated along with the opening / closing cam 25. Accordingly, the pull-down force adjusting bracket 42 swings clockwise in the state shown in FIG. 6, and the rear operation shaft 79 is rotated counterclockwise via the interlocking lever 77. As the operating shaft 79 rotates, the operating swing shaft 82 pushes the front portion of the bifurcated portion 76c of the push-up lever 76, and the push-up lever 76 turns clockwise about 72 as shown in FIG. Therefore, the action portion 76b at the tip of the push-up lever 76 pushes up the push-up roller 56 and raises the knitted fabric catching surface forming member 53 to the vicinity of the upper limit position.
[0041]
  The push-up amount of the knitted fabric capturing surface forming member 53 by the push-up action portion 76 b is larger than the basic stroke S pushed up by the push-up cam 71 via the push-up lever 73. As a result, the roller 65 at the center of the back surface of the knitted fabric catching surface forming member 53 is drawn to the holder 57 side by the hook-shaped pulling piece 66, so that the knitted fabric catching surface 19 sinks to the casing 22 side against the coil spring 63. (See FIG. 16-A). In this state, when the solenoid 59 is energized and the engaging piece 60 is tilted from the state (A) in FIG. 16-B to the state (B) in FIG. Since the knitted fabric catching surface forming member 53 is held in the vicinity of the upper limit position while being engaged with the lower engaging portion 61 and the knitted fabric catching surface 19 is sinking to the casing 22 side, the “sunk” state is maintained. is there. Here, the sunk state where the knitted fabric capturing surface 19 sinks to the casing 22 side is set in the lowering member 47 portion outside the knitting width, and the knitted fabric capturing surface 19 is submerged to the casing 22 side. It is evacuated so as not to hinder the knitting fabric formation. Further, when the knitted fabric is moved in the lateral direction when the needle bed is racked, the lowering member 47 portion on the moving path may be set to the “sunk” state in order to secure the moving path of the knitted fabric.
[0042]
  Next, in order to bring the front and rear casings 22 and 22 into the “closed” state, the open / close swing bracket 27 is moved from the state shown in FIG. Turn so that the tip swings to the right. Then, the front opening / closing arm 29 of the front casing 22 rotates counterclockwise, the rear opening / closing arm 33 of the rear casing 22 rotates clockwise, and the front and rear casings 22, 22 are respectively connected by the parallel links 21. It is drawn to the “closed” state. The knitted fabric catching surface forming member 53 in which the energization to the solenoid 59 is cut off and the engagement between the engaging piece 60 and the engaging portion 61 is released can be moved up and down, and the knitted fabric catching surface 19 can lower the knitted fabric. Then, it will be in a “pause” state where it does not move up and down.
[0043]
  In the above-mentioned “pause” in which the knitted fabric catching surface 19 of the lowering member 47 does not perform the knitting fabric lowering action when the front and rear casings 22 and 22 are attracted, the solenoid 59 is energized and the engagement piece 60 is energized. 17B is tilted from the state (A) in FIG. 17B to the state (B) in FIG. 17B toward the engaging portion 61, and the engaging piece 60 is engaged with the upper engaging portion 61. The position of the lowering member 47 is slightly above the basic stroke S, that is, the position where the push-up roller 56 of the lowering member 47 is slightly lower than the rotation locus of the cam crest of the push-up cam 71. Therefore, even if the push-up cam 71 rotates, the pull-down member 47 is not pushed up by the cam crest, and the knitted fabric catching surface forming member 53 enters a “pause” state. This resting state is set to a portion that is within the knitting width and is not knitted by pattern knitting or the like.
[0044]
  Next, a state in which the knitted fabric lowering force by the knitted fabric capturing surface 19 in the “closed” state in which the front and rear casings 22 and 22 are attracted is “strong” will be described. In order to make the knitted fabric lowering force “strong”, the lowering force adjusting cam 40 is rotated to swing the lowering force adjusting swing bracket 42 so that its tip is located on the leftmost side in the drawing. The operating shaft 79 is rotated through the rod 45, the rear arm 44 and the interlocking lever 77. With the rotation of the operation shaft 79, the front push-up lever 76 is turned clockwise and the rear push-up lever 76 is turned counterclockwise by the operation swing shaft 82 of the operation lever 78, respectively. As shown in A, the push-up action portion 76b of the push-up lever 76 is lowered to extend the pull-down tension adjusting spring 54, and the tension of the pull-down tension adjusting spring 54 acting on the spring receiving projection 55 is applied. Due to the tension of the tension adjusting spring 54 and the weight of the pull-down member 47, the knitted fabric pulling force by the knitted fabric catching surface 19 is in a “strong” state. In the “strong” state, that is, in the state where the tension adjusting spring 54 is acting, the tension is steplessly adjusted within the range of the tension adjusting spring 54 and the knitted fabric is pulled down by the knitted fabric capturing surface 19. The power can be adjusted. This “strong” state is used when it is desired to repeatedly knit only a part of the knitting width. At this time, the other parts that are not knitted are set to the “pause” state.
[0045]
  Then, in order to set the knitted fabric lowering force by the knitted fabric catching surface 19 in the “closed” state where the front and rear casings 22 and 22 are drawn close to “medium”, the pulling force adjusting cam 40 is rotated to adjust the pulling force. The swing bracket 42 for swing is swung to the right side of the “strong” state in FIG. 18 and to the left side of FIG. Then, from the “strong” state of FIG. 18A via the connecting rod 45, the rear arm 44 and the interlocking lever 77, the front operation shaft 79 is turned clockwise and the rear operation shaft 79 is turned counterclockwise. Rotate each one. By rotating each operation shaft 79, the front operation rocking shaft 82 is rotated in the clockwise direction, and the rear operation rocking shaft 82 is rotated in the counterclockwise direction. As a result, the pulling tension adjusting spring 54 in the stretched state contracts to raise the pushing action portion 76b of the pushing lever 76, and the tension of the pulling tension adjusting spring 54 does not act on the pulling member 47. . Therefore, the knitted fabric lowering by the knitted fabric capturing surface 19 is “medium”. This “medium” state is used for general knitting.
[0046]
  Further, in order to make the knitted fabric lowering force by the knitted fabric catching surface 19 in the “closed” state where the front and rear casings 22 and 22 are drawn close to “weak”, the operation shaft 79 further forward from the “middle” state. Are rotated clockwise and the rear operation shaft 79 is rotated counterclockwise, and the front push-up lever 73 is rotated counterclockwise by the operation swinging shaft 82 via the wrap spring 75. The side push-up lever 73 is rotated in the counterclockwise direction. Then, as shown in FIG. 19-A, even after the distal end portion 73b of the push-up lever 73 comes into contact with the push-up roller 56 of the pull-down member 47, the vine spring 75 provided on the base end portion 73a is operated by the operating swing shaft 82. It will be in the pressed state. Therefore, the knitted fabric lowering force by the knitted fabric catching surface 19 is a weight obtained by subtracting the pressing pressure of the vine spring 75 from the weight of the lowering member 47, and the knitted fabric lowering force becomes “weak”. The state in which the knitted fabric lowering force of the knitted fabric capturing surface 19 is set to “weak” is set when the bind-off processing such as the knitted fabric and end processing is performed. The setting of each state of “strong”, “medium”, “weak” and “pause” of the knitted fabric capturing surface 19 or “sunk” when the knitted fabric capturing surface 19 is sunk is set for the knitted fabric capturing surface 19. For example, when the knitted fabric lowering force is changed from “medium” to “sunk” of the knitted fabric capturing surface 19, the front and rear casings 22 can be set during knitting. From “closed” to “opened”, the knitted fabric catching surface 19 is “sunk”, and the engagement member 60 of the solenoid 59 holds the desired portion of the pull-down member 47 in the “sinked” state. The casing 22 is returned from “open” to “closed”. Then, a part of the lowering members 47 can be changed from a state where the knitting fabric lowering force is “middle” to a state where the knitted fabric capturing surface 19 is sunk. In the case where the pulling roller device 6 is provided as in this example, the pulling roller device 6 is used to switch from the state in which the knitted fabric pulling force is “middle” to the “sunk” state in which the knitted fabric catching surface 19 is sunk. It is desirable to hold and hold the knitted fabric. In the pulling device 7 of the present embodiment, since the pair of pulling means are arranged on the front and rear sides of the knitted fabric passage path 8, the pulling means provided for lowering each knitted fabric before and after the tubular knitted fabric are individually provided. Since each knitted fabric can be pulled down by controlling the knitted fabric, the knitted fabric can be pulled down even when the shape and the number of courses of the front body and the back body are different when knitting, such as a sweater. Moreover, in the said Example, it is set as the structure which can move to the position of "open" which opened widely between the knitted fabric capture surfaces 19 of each pulling-down means 16 * 17 by the opening / closing mechanism 18. FIG. As a result, even when two set-up devices 5 are provided, a passage path for the set-up device to move up and down can be secured. However, when only one set-up device 5 is provided or the set-up device is In the case where it is not arranged, the opening / closing device 18 may be omitted. Furthermore, in the above embodiment, one unit is constituted by five pulling members, and the cam peaks are arranged so as to be sequentially pushed up from the ends. The present invention can be carried out within a range that does not depart from the spirit of the present invention, such as changing the number or changing the mounting position of the cam crest to the drive shaft so that each pulling member is operated at a different timing (for example, random). .
[0047]
<Second embodiment>
  20 is a front view showing the knitted fabric lowering apparatus 103 in a state of being attached to the flat knitting machine 1 partially seen from the front of the flat knitting machine, and FIG. 21 is a view in the direction indicated by arrows ii in FIG. A cross-sectional view is shown. The knitted fabric lowering device 103 includes a front knitted fabric lowering portion 103f and a rear knitted fabric lowering portion 103b. The front and rear knitted fabric lowering portions 103f and 3b are arranged in front and back front needle beds (FD, FU), and is provided below each needle bed across a knitted fabric passage route 8 indicated by a one-dot chain line extending below the mouth portion 5 of the rear needle bed (BU, BD). In the present embodiment, a case where a hook member that hooks the knitted fabric, for example, a pulling claw, is used as the knitted fabric capturing means and the knitted fabric is hooked and pulled down from the surface side of the knitted fabric 108 will be described as an example. The lower claw bed 109 has a large number of receiving grooves 137 for receiving lowering claws, which will be described later, on the back surface thereof.
[0048]
  The bed 109 extends in parallel in the needle bed longitudinal direction, and is screwed to a projecting portion 113a of an inverted T-shaped bracket 113 projecting from both ends of the bed (needle bed 3) 111 on the flat knitting machine. Supported by Reference numeral 115 in the drawing denotes a bracket for fixing the two central portions of the bed to the main body bed 111 for the purpose of preventing the pull-down claw bed 109 from swinging. In the present specification, the side facing the knitted fabric passage route 8 will be described as the front, and the side not facing will be described as the back. Since the front and rear knitted fabric pull-down parts 103f and 3b have the same structure, the rear knitted fabric pull-down part 103b will be described below. The front knitted fabric pull-down part 103f has a portion corresponding to the rear knitted fabric pull-down part 103b. The same symbols are attached.
[0049]
  The cam carriage 117 for lowering the knitted fabric operates an advance / retreat operation of the lowering claw attached to the lowering claw bed 109. The carriage 117 is guided by a driving guide rail 121 fixed to the lowering claw bed 109, and is attached to a driving guide 119 that can travel in the longitudinal direction of the lowering claw bed. One end 119a of the drive guide 119 is fixed to a timing belt 127 stretched between pulleys 123 and 125 provided on both side ends of the pull-down claw bed 109 by an appropriate means, and the rotation drive of the drive motor 135 is the rotation shaft of the motor 135. Is transmitted to the pulley 123 via the pulley 133, the timing belt 131, and the pulley 129, which are pivotally supported by the cam carriage 117. As a result, the cam carriage 117 moves on the pull-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 forward or backward.
[0050]
<Bed configuration>
  22 to 24 show the structure of the knitted fabric lowering portion. 22 shows the position where the lowering claw for capturing the knitted fabric is lowered (retracted) (FIG. 22A) and the position where it is raised (advanced) (FIG. 22B). FIG. Each part is shown. FIG. 24 is a view of the knitted fabric lowering portion in a state in which the driving guide 119 is removed and a part of the claw guide plate 187 is seen from the back side.
[0051]
  The lowering claw bed 109 has a number of receiving grooves 137, and a selector 140, a claw jack 150, and a lowering claw 160 are attached to each receiving groove 137. The housing groove 137 includes a shallow groove portion 137a and a deep groove portion 137b. The upper side of the claw bed 109 in which the lowering claw 160 is accommodated is formed as a shallow groove portion 137a, and the lower side in which the selector 140 is accommodated is formed as a deep groove portion 137b.
[0052]
  The claw jack 150 has a push-up arm 151 that contacts the step 165 of the pull-down claw 160 at the front end when the claw jack 150 is advanced, a main body 152 of the claw jack 150 is branched to the rear to form a branch arm 153, and a rear surface of the front end of the branch arm 153 A butt 154 is formed on The bat 154 is hidden in the deep groove portion 137b at a position where the claw jack 150 is retracted in the accommodation groove, and is exposed outside the shallow groove portion 137a at a position where the claw jack 150 is advanced. The claw jack 150 is arranged in a stacked state with the selector 140 in the accommodation groove, and a differential portion 155 that protrudes from the accommodation surface of the selector 140 is formed on the sliding contact surface side of the claw jack 150 with the selector 140. Yes.
[0053]
  There are two types of selectors 140, a first selector 140a and a second selector 140b, which have the same shape except for the formation position of the butt 147 formed on the back surface of the selector tail. The first selector 140a is accommodated in the odd-numbered accommodation grooves from the left end of the claw bed 109, and the second selector 140b is accommodated in the even-numbered accommodation grooves. The first selector 140a is selected when the knitted fabric lowering cam carriage 117 travels in the left direction, and the second selector 140b is selected when the cam carriage 117 travels in the right direction.
[0054]
  At the front end portion of the selector 140, a receiving portion 141 for fitting a lower end portion 167 having a substantially square shape of a lowering claw 160, which will be described later, and an engaging portion 173 of a locking groove 171 cut off in front of the lowering claw bed 109, It has a locking claw 142 to be engaged. In addition, a pair of upper and lower stoppers 143 and 144 project from the center front side of the selector 140 at a predetermined interval, and a swing fulcrum 145 of the selector is formed therebetween. A bat 146, a bat 147, and a bat 148 are formed on the rear surface of the selector from the top, and can protrude out of the receiving groove. As for the second selector 140b, the bats 147 and 148 are continuously provided in one wide bat 149. The function of each bat will be described later.
[0055]
  The differential portion 155 of the claw jack 150 is positioned between the stoppers 143 and 144 of the selector 140, and is clawed when the selector 140 is operated to advance and retract by cam means mounted on a knitted fabric lowering cam carriage 117 described later. The raising / lowering of the jack 150 is delayed with respect to that of the selector 140 by the differential amount l. The pulling claw 160 has a claw mounting portion 161 formed at the tip, and the main body of the claw 180 configured as a separate part 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.
[0056]
  A spring insertion part 162 and a lower limit stopper 163 are formed on the back side of the rear side of the claw mounting part 161, and a step part 165 that contacts the push-up arm 151 of the claw jack 150 is provided on the back side of the central part of the main body 164. A swing fulcrum 166 is formed in contact with the bottom wall of the receiving groove. A coil spring 83 is attached to the spring insertion part 162. A lower end portion 167 of the pulling claw 160 is formed in a generally square shape so as to be fitted to the receiving portion 41 of the selector. Reference numeral 38 denotes a pressing plate that is attached to the claw bed 109 and prevents the selector 140 and the claw jack 150 from falling off from the receiving groove 137 of the claw bed 109.
[0057]
  At the front end side of the lowering claw 160, a plate 185 attached to the upper edge of the drive guide rail 121 and a claw guide plate 187 formed with a number of slits 188 for receiving and guiding the lowering claw 160 fixed to the plate 185 are 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 path 8 is about 10 mm, and the claw 180 is exposed from the slit 188 and the knitted fabric is captured. Provide a gap where the front and rear claws do not interfere. The advancing / retreating stroke of the lowering claw 160 is about 10 mm, but the stroke may be further increased. The number of pull-down claws does not have to be the same as the number of needles on the needle bed. For example, one for every 2 to 10 needles, that is, one for 2 to 10 wale stitches may be provided. .
[0058]
<Cam carriage>
  FIG. 25A shows a perspective view showing the cam arrangement of the knitted fabric lowering cam carriage 117, and FIG. 25-B shows a cross-sectional view in the direction of the arrow along line ii-ii in FIG. A selector raising cam 191 and a selector lowering cam 192 are provided at the center of the cam plate 190. The selector raising cam 191 includes an upper raising cam 191 a that engages with the selector butt 146 and a lower raising cam 191 b that engages with the selector butt 148. A claw suspension 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 portion of the raising cam 191b. Movable presser cams 101 and 103 and fixed presser cams 102 and 104 are arranged in each selector selection unit 100R and L, respectively.
[0059]
  A claw resting presser cam 194 is provided on the top of the selector upper raising cam 191a, and a pair of left and right claw jack holding cams 195, 196 are provided along the upper edge of the selector lowering cam 191b. Reference numerals 197 and 198 denote return cams provided at both ends of the cam plate. Among the cams described above, the movable cams that are switched to the action / non-action position by an actuator such as a solenoid are the claw pause release presser cam 193, the movable presser cams 101 and 103 provided in the selector selection unit 100, and the claw pause presser 194. It is.
[0060]
  The claw jack holding cams 195 and 196 are configured as a swinging presser, but there is no actuator for driving the claw jack holding cams 195 and 196. The claw jack holding cams 195 and 196 can swing upward with reference to the illustrated position. It is configured to return to the reference position by an urging means (not shown). The groove cam 107 of the selector butt 146 formed between the selector upper raising cam 191 a and the lowering cam 192 is formed with a height higher than the cam plate 190. Reference numeral 109 denotes a cam slope.
[0061]
  The knitted fabric lowering cam carriage 117 reciprocates on the lowering claw bed 109, and the return cam 197 or 198 presses the butt 146 before the selector selection unit 100 reaches the selector 140, whereby the selector 140 is moved to the claw jack 150. It swings around the swing fulcrum 45 on the differential portion 55. As a result, the bats 147 and 148 provided on the tail portion of the selector are exposed from the receiving groove, and returned to the protruding position that can be selected by the selection unit 100 (return position).
[0062]
  Of the selector selection units 100 provided on the left and right, the selector selection unit 100R works when the carriage goes to the right, and the selector selection unit 100L works when the carriage goes to the left. The selector selection unit 100R includes a fixed presser 102 disposed in the lower stage and a movable (swinging or retracting) presser 101 disposed in the upper stage. The fixed presser cam 102 presses the butt 147b of the second selector 140b in the return position shown in FIG. 3A and sinks into the receiving groove to a position where it is not affected by the selector lowering cam 191b.
[0063]
  The movable presser cam 101 works against the butt 147a of an arbitrary first selector 140a in the return position, and only the selector that has not been acted upon by the movable presser cam 101 engages with the subsequent selector lower raising cam 191b. Similarly, the selector selection unit 100L has a fixed presser cam 104 disposed in the upper stage and a movable presser cam 103 disposed in the lower stage, and the fixed presser cam 104 presses the butt of the first selector 140a in the return position. Then sink into the groove. The movable presser cam 103 works against the butt 147b of the second selector 140b in the return position, and the selector pressed by the presser is not affected by the subsequent selector raising cam 191, and only the selector that has not been pressed by the selector is used. Engage with the selector raising cam 191.
[0064]
  The drive control of the knitted fabric lowering cam carriage 117 is performed in association with the knitting operation of the knitting carriage 114. For example, when the formation of the stitch course on the front side is performed, the lowering cam of the lower knitting portion 103f is lowered. The carriage 117 is driven, and a lowering claw corresponding to the portion is acted to lower the forerunner. For example, when the front body 108f is turned from left to right and the back body 108b is turned from right to left and the knitting yarn is supplied in the counterclockwise direction to circulate knitting the body, the course knitting of the front body 108f is performed. When performed, the knitted fabric lowering cam carriage 117 of the front knitted fabric lowering portion 103f is moved to the right and the even-numbered lowering claw 160 is operated, and then the cam carriage 117 is reversed leftward to operate the odd-numbered lowering claw To lower the knitted fabric.
[0065]
  When the rear body 108b is subjected to course knitting, the same operation as described above is performed in the rear knitted fabric lowering unit 103b. In this way, every time the stitch course of each knitted fabric 108f, 108b is knitted, the corresponding lowering claw 160 is operated to lower the knitted fabric. As described above, the lowering of the knitted fabric prevents each nail from releasing the knitted fabric at the same time because the respective lowering claws attached to the odd-numbered and even-numbered odd-numbered claw beds 109 are operated sequentially with a time difference. The trouble that the ground pulls up does not occur. In the case of knitting courses more than a specific part on the predecessor side, the number of actuations of the lowering claw corresponding to that part is lowered more than others.
[0066]
<Pattern 1>
  Second Selector Lowering Operation FIGS. 26 to 28 show the advancing and retreating operation of the lowering claw 160 in each phase A to F of the knitted fabric lowering cam carriage 117 when the cam carriage 117 advances leftward. In this case, the second selector 140b accommodated in the even-numbered accommodation groove is selected by the selection unit 100L and the advance / retreat is controlled.
[0067]
  (A position) At the A position in the figure, the selector oscillates about the oscillating fulcrum 145 when the bat 146 is pressed by the action of the return cam 197, and the bat 149 (47b, 48) is accommodated in the receiving groove. It protrudes outward from 137b.
[0068]
  (B position)
  Next, the B position indicates a state in which the selector has reached the selector selection unit 100L. Since the movable presser 103 swings and displaces to a position where it does not press the butt 147b of the second selector 140b, the bats 147b and 148 are in this position. Maintain an exposed position outside the groove. The swing control of the movable presser cam 103 can be performed in units of selectors, and only the selected second selector 140b maintains the position where the butt 147b and 148 are projected out of the groove, and the second selector 140b that is not selected is selected. Is pressed by the movable presser cam 103 and submerged in the groove. At this time, since all the first selectors 140a are subjected to the action of the fixed presser cam 104, the butt 147a is submerged in the groove.
[0069]
(C position) The next C position shows a state in which the second selector selected at the B position and remaining outside the groove is raised to the middle of the cam slope by engaging its butt 147b with the selector lowering cam 191b. . At this position, the selector receiving portion 141 is engaged with the lower end portion 167 of the lowering claw 160, and the lower stopper 144 of the selector 140b comes into contact with the differential portion 155 of the claw jack 150 and starts to push up the claw jack 150. As a result, the push-up arm 511 of the claw jack comes into contact with the step portion 165 of the lowering claw and pushes up the lowering claw. As the selector 140b is raised, the lower end portion 167 of the pulling claw 160 is guided into the receiving portion by the inclined surface 141a of the receiving portion 141 and is deeply fitted.
[0070]
During this fitting, the lowering claw 160 swings and displaces in the clockwise direction around the swing fulcrum 166 provided at the center of the main body. As a result, the claw tip of the lowering claw 160 releases the catch of the knitted fabric 108 in the knitted fabric passage path 8 and is immersed in the slit 188 of the claw guide plate 187. The raising operation of the selector 140 in the initial stage is performed by the engagement between the butt 148 and the selector lower raising cam 191b, and the selector butt 146 is raised to a position where it can engage with the upper raising cam 191a. Subsequent raising of the selector 140 is performed by the upper raising cam 191a.
[0071]
(Between C and D positions)
  Between the C position and the D position, the selector 140 is further lifted by the action of the selector upper raising cam 191a. As the selector is raised, the claw jack 150 and the lowering claw 160 are raised. As a result, when the selector butt 146 reaches the top of the selector upper raising cam 191a, the claw jack butt 154 is guided to a position exceeding the claw jack holding cam 195 (position D). During this time, the coil spring 183 is compressed and deformed.
[0072]
(E position)
  In the E position, the selector butt 146 is lowered by the action of the selector lowering cam 192. However, since the claw jack 150 is prevented from being lowered by the claw jack holding cam 196, the fitting between the selector receiving portion 141 and the lower end portion 167 of the lowering claw 160 is released. As a result, the lowering claw 160 swings counterclockwise, and the claw 180 is exposed outside the slit 188 of the claw guide plate 187 and captures the knitted fabric in the knitted fabric passage path 8.
[0073]
(E to F position)
  The F position indicates a state where the selector 140 and the claw jack 150 are lowered to the original initial position. After the knitted fabric is captured by the claw 180 at the E position, the pulling claw 160 pulls 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 advancing and retreating trajectories of the bats 146, 147, and 154 of the selector and the claw jack described above.
[0074]
<Pattern 2>
  Second selector lowering suspension Next, a case where the claw 180 of the lowering claw 160 is temporarily suspended in the slit 188 of the claw guide plate 187 to interrupt the lowering of the knitted fabric will be described. The lowering claw 160 is placed in the resting state when the knitted fabric to be lowered does not exist in the knitted fabric passage route 8, for example, when the V-neck opening is knitted in the case of the front body. In this case as well, the selector operation from positions A to C is performed in the same manner as described above. In the C ′ position, as shown in FIG. 28B, the butt 146 of the selector 140 b is submerged in the receiving groove under the action of the resting presser cam 194.
[0075]
  At this time, the locking claw 42 of the selector is fitted into the engaging portion 173 of the locking groove 171 cut out on the claw bed 109, so that the claw 180 of the lowering claw 160 holds the swing position hidden in the slit 188, and Does not act on the ground. Even after the selector passes the resting presser cam 194, the fitting state between the selector 140b and the lock groove 171 continues, so that the selector butt 146 remains in the receiving groove and the subsequent selector lowering cam 192 functions. Not receive. Therefore, even after the cam carriage 117 passes, the selector 140, the claw jack 150, and the lowering claw 160 maintain the state shown in FIG.
[0076]
<Pattern 3>
  Next, the case where the knitted fabric 108 is captured by releasing the suspension of the lowering claw 160 once placed in the suspended state as described above will be described. In this case as well, it is performed when the cam carriage 117 advances leftward. When the bat 148 of the selector 140b that has been paused in the previous course reaches the C ″ position, the pause release presser cam 193 is actuated and engaged with the bat 148 as shown in FIG. Swing and displace in the needle direction.
[0077]
  As a result, the selector locking pawl 142 is disengaged from the engaging portion 173 of the locking groove 171 and the selector butt 146 is exposed outside the receiving 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 D, E, and F positions. At the position E, the knitted fabric is captured by the claw 180 of the lowering claw 160 and is lowered. Although the operation of the lowering claw related to the second selector 140b has been described above, the operation of the lowering claw related to the first selector 140a is performed by the same method except that the traveling direction of the knitted fabric lowering cam carriage 117 is different.
[0078]
<Third embodiment>
  Next, a modified example 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. In this knitted fabric suction mechanism, an endless belt having a plurality of suction holes formed on its surface is stretched between rollers provided at intervals along the knitted fabric passage path, and these assemblies face the knitted fabric passage 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 through 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 passage path. Each suction mechanism is controlled in association with the knitting of the knitted fabric as in the above-described embodiment, and pulls down the knitted fabric.
[0079]
  In the above-described embodiment, the hook member for hooking the knitted fabric is constituted by a claw formed by a thin plate-like plate. Instead, it is constituted by a brush-like one in which a large number of needles are arranged. A plurality of stitches in the wale / course direction of the knitted fabric may be hooked with a needle. Each pulling claw is operated by a cam carriage that runs on the claw bed. Alternatively, for example, a driving means such as a linear actuator can be individually connected to each pulling claw to control driving. It can implement in the range which does not deviate from the meaning of this invention.
[0080]
【The invention's effect】
As described above, according to the drawing device of the present invention, when pulling down a knitted fabric knitted in a two-layer cross section, such as a cylindrical knitted fabric composed of a front knitted fabric and a rear knitted fabric, the knitted fabric passing path is sandwiched. The front knitted fabric lowering meansOf the part immediately after the organizationThe knitted fabric lowering means on the front knitted fabricOf the part immediately after the organizationFor the knitted fabric on the rear side,In conjunction with the knitting of the knitted fabric without holding the tubular knitted fabric immediately after the knitting with the front and rear knitting fabric lowering meansPull-down members one after another or individuallyThe front knitted fabric is driven by the pulling member of the pulling means for the front knitted fabric, and the back knitted fabric is individually pulled down by the pulling member of the pulling means for the back knitted fabric.Therefore, the knitted fabric can be satisfactorily pulled down with an appropriate pull-down force even when performing non-sewing knit for the purpose of omitting the sewing step.
[0081]
  In particular, a knitted fabric lowering device opening / closing mechanism that enables the front knitted fabric lowering means and the rear knitted fabric lowering means to move in the approaching / separating direction and a pulling force adjusting mechanism that adjusts the pulling force of the knitted fabric catching surface is provided. Each knitting fabric lowering means is formed by arranging a plurality of lowering members in the longitudinal direction of the needle bed.Without pinching the tubular knitted fabric immediately after knitting with the front and rear knitting fabric lowering means,The pull-down members are sequentially or individuallyThe tubular knitted fabric immediately after knitting is linked to the knitting of the knitted fabric.The one that is configured to be able to be pulled down can be set to the optimum pulling force by combining the action by the knitted fabric catching surface, the inaction and the setting of the pulling force of the knitted fabric catching surface according to the type of knitted fabric. There are advantages. For example, when a hole is formed in the knitted fabric or when the knitted fabric is moved greatly in the lateral direction by racking, the knitted fabric can be smoothly knitted by retracting the pull-down member located in the portion away from the knitted fabric. Can be done.
[0082]
  In addition, since a large number of knitted fabric capturing portions are arranged in the longitudinal direction of the needle bed, and each knitted fabric capturing portion is selectively or sequentially controlled, as in the case of forming a hole in the knitted fabric. The knitted fabric can be pulled down with an optimal pulling force even if the shape and the number of courses of the front and back knitted in the tubular shape are not the same.
[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 attached to a flat knitting machine.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a schematic side view showing a casing opening / closing mechanism.
FIG. 4 is a schematic side view of an opening / closing mechanism and a pull-down force adjusting mechanism portion.
FIG. 5 is a schematic plan view of an opening / closing mechanism and a pull-down force adjusting mechanism portion.
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 apparatus including the pulling 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 retracting piece portion.
11A is a side view of the knitted fabric capturing surface, FIG. 11B is an enlarged view thereof, and FIG. 11-C is an enlarged plan view thereof.
FIG. 12 is a side view showing a modification of the knitted fabric capturing surface.
FIG. 13 is a side view showing still another modified example of the knitted fabric capturing surface.
14A is a side view of the push-up cam, and FIG. 14B is a front view thereof.
15A is a side view of the push-up lever, FIG. 15B is a plan view of the push-up cam 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. 16-B is a plan view of the push-up lever, and FIG. 16-C is a front view of the push-up lever.
17A is a side view of the knitted fabric catching surface retracted at a position near the upper limit, and FIG. 17-B is a side view of the knitted fabric catching surface retracted at a position near the upper limit. FIG.
18A is a side view showing the basic stroke of the knitted fabric catching surface, and FIG. 18B is a front view showing the basic stroke of the knitted fabric catching surface.
FIG. 19-A is a side view showing the operation when adjusting the pull-down amount of the knitted fabric catching surface, and FIG. 19-B is a front view showing the operation when adjusting the pull-down amount of the knitted fabric catching surface. is there.
FIG. 20 is a partial perspective view showing a state in which the knitted fabric lowering device according to the second embodiment is attached to a flat knitting machine from the front of the flat knitting machine.
21 shows a cross-sectional view in the direction of the arrows along line ii in FIG.
FIG. 22 is a cross-sectional view of the lowering claw bed; 22-A shows a lowered state of the lowering claw; 22-B shows a raised state.
FIG. 23 is a side view of each component mounted on the pull-down claw bed.
FIG. 24 is a view of a part of the lowering claw bed as viewed from the back side.
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 traveling leftward.
FIG. 27 is a view showing the forward and backward movement of the lowering claw in each phase A to F of the cam carriage of FIG.
28A shows the operating state of the lowering claw in the phase C ″ of the cam carriage in FIG. 24, and FIG. 28B shows the operating state of the lowering claw 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 passage route, 16 ... Pulling down means for front knitted fabric, 17 ... Pulling down means for back knitted fabric, 18 ... Opening / closing mechanism, 19 Knitted fabric catching surface, 20 ... Adjusting pulling force Mechanism: 24 ... Knitting carriage, 47 ... Pulling member, 48 ... Lifting drive means, 49 ... Pulling force adjusting means, 50 ... Pulling member body, 51 ... Needle, 69 ... Base material, 83 ... Elastic member connecting part, 109 ... Pulling down Claw bed, 111 ... body bed, 117 ... knitting fabric lowering cam carriage, 119 ... drive guide, 121 ... drive guide rail, 135 ... drive motor, 137 ... receiving groove, 140 ... selector, 140a ... first selector, 140b ... Second selector, 173 ... engaging portion, 142 ... lock claw, 143, 144 ... stopper, 146, 147, 149 ... bat, 150 ... claw jack, 151 ... push-up arm 153: Branch arm, 154 ... Bat, 155 ... Differential part, 160 ... Drawing claw, 161 ... Claw mounting part, 165 ... Step part, 166 ... Oscillating fulcrum, 171 ... Lock groove, 180 ... Claw, 183 185 ... Plate, 187 ... Claw guide plate, 188 ... Slit, 190 ... Cam plate, 191 ... Selector raising cam, 192 ... Selector lowering cam, 193 ... Claw pausing release presser cam, 94 ... Claw pausing 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 (9)

Front knitted fabric and back knitted fabric with a knitted fabric passage route formed below the tooth lip portion of a flat knitting machine in which at least a pair of front and rear needle beds are arranged with the throat portions of the needle bed facing each other. A knitted fabric lowering device arranged at the front and rear to lower a knitted fabric knitted in a tubular shape from the front and back thereof, and only the front knitted fabric of the cylindrical knitted fabric in the knitted fabric passage path Acting on the front knitted fabric portion to lower and pull down the front knitted fabric, and acting on only the rear knitted fabric to capture and lower the rear knitted fabric portion to lower and lower the back knitted fabric, a take-down force adjusting mechanism for adjusting the pull-down force of each knitting fabric for pulling down means is provided, each knitting fabric for take-down means is formed by arranging a plurality of longitudinally cuts member of the needle beds, the knitted fabric take-down time of action, reduction in conjunction with the knitted fabric of the organization member respectively to sequentially or individually driven, pull-down for the front and back of the knitted fabric The front knitted fabric with cuts member front knitted fabric for pull-down means without pinching the tubular knitted fabric immediately after partial organized means, the back knitted fabric each individually pulled operably with cuts member back knitted fabric for pulling down means A knitted fabric lowering device in a flat knitting machine, characterized in that it is configured.   The knitted fabric lowering device opening / closing mechanism for operating the first knitted fabric lowering means and the rear knitted fabric lowering means in conjunction with or independently of each other in the approaching / separating direction is provided. Knitting fabric lowering device in flat knitting machine.   The lowering member of the pulling means for the knitted fabric is provided with a knitted fabric capturing surface at a portion facing the knitted fabric of the pulling member body. The knitted fabric capturing surface captures the knitted fabric when descending and releases the knitted fabric when ascending. The knitted fabric lowering device in the flat knitting machine according to claim 1 or 2, wherein the knitted fabric lowering device is a flat knitting machine.   The knitted fabric catching surface of the knitting fabric lowering means is pressed and urged in the protruding direction with respect to the pulling member main body so that it can be stored in a position that does not protrude from the knitted fabric side surface of the pulling member main body when it is inactive or the protruding amount is reduced. The knitted fabric lowering device for a flat knitting machine according to claim 3, wherein the knitted fabric lowering device is configured to be retractable.   The knitted fabric capturing surface is formed of a plurality of needles implanted perpendicularly or at a predetermined angle to the surface of the base material, and an intermediate position or a tip end portion of the plurality of needles is bent obliquely downward. The knitted fabric lowering apparatus in the flat knitting machine according to claim 3 or 4.   The knitted fabric lowering apparatus for a flat knitting machine according to any one of claims 3 to 5, wherein the knitted fabric capturing surface is attached to the lowering member main body via an elastic material.   The pull-down member and pull-down force adjusting means are connected by an elastic member, and the elastic force of the elastic member can be changed by changing the position of the elastic member connecting portion of the pull-down force adjusting means to change the knitted fabric pulling force on the knitted fabric catching surface. The knitted fabric lowering device for a flat knitting machine according to claim 5, wherein the knitted fabric lowering device is configured.   The lowering action part is formed by a lowering claw provided in parallel with the needle bed longitudinal direction, and the lowering means of the lowering claw is a lowering claw bed, a selector mounted in a plurality of receiving grooves formed in the bed, a lowering claw jack, a lowering claw An urging means for urging the lowering claw downward, a carriage that reciprocates in the width direction of the lowering claw bed, a selection means that is mounted on the carriage and that selects any of the lowering claws, and is selected by the selection means The apparatus for lowering a flat knitting machine according to claim 1, further comprising a carriage having cam means for raising the lowering pawl.   While urging the lowering claw downward and engaging with each other at the engaging part of the selector and the lowering claw, the claw tip swings away from the knitted fabric to release the claw from the knitted fabric. After raising the lower pawl while maintaining the engagement between the selector and the lower pawl, lower the selector and release the engagement with the lower pawl to swing the pawl of the lower pawl toward the knitted fabric side. The apparatus for lowering a flat knitting machine according to claim 8, wherein the knitted fabric is captured.

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