JP6280937B2 - Knitting fabric lowering device - Google Patents

Description

  The present invention relates to a knitted fabric lowering device for lowering a knitted fabric knitted by a flat knitting machine below a tooth opening.

  The flat knitting machine has front needle beds and rear needle beds facing each other, knitting needles arranged in each of a large number of needle grooves arranged in parallel to each needle bed, and the longitudinal direction of the needle bed (perpendicular to the extending direction of the needle grooves). A carriage that reciprocates along a direction). A knitting cam is mounted on the carriage, and this knitting cam causes the knitting needle to perform a knitting operation. When the flat knitting machine having such a configuration is provided with a knitted fabric lowering device for lowering the knitted fabric hanging from the mouth portion formed between the front needle bed and the rear needle bed. (For example, refer to Patent Document 1).

  As shown in the schematic diagram of FIG. 11, the conventional knitted fabric lowering apparatus 200 includes a pair of base portions 1 and 1 disposed below the front needle bed FB and the rear needle bed BB of the flat knitting machine 300, respectively. And a guide plate 2 provided on the upper side of each base portion 1 and a capturing / lowering mechanism 3 disposed in each base portion 1. The guide plate 2 is a member that plays a role of restricting the left and right movement of the knitted fabric that hangs down from the mouth part GP, and faces the path of the knitted fabric (knitted fabric passing path 101). A guide plate 2 of the base portion 1 and a guide plate 2 of the other base portion 1 are disposed to face each other. The catching / lowering mechanism 3 is a mechanism that hangs down at a position facing the guide plate 2, catches the knitted fabric whose movement is restricted by the guide plate 2, and lowers the knitted fabric below the tooth opening GP. is there. In addition to the pulling-down device 200 having the above-described configuration, a knitting fabric set-up device (not shown) is provided below the tooth opening GP of the flat knitting machine 300.

  A usage mode of the knitted fabric lowering apparatus 200 will be briefly described. When the set-up portion of the knitted fabric is knitted using the front needle bed FB and the back needle bed BB of the flat knitting machine 300, the tip of a set-up device (not shown) is hooked on the set-up portion. At this time, the guide plate 2 of the knitted fabric lowering apparatus 200 is in an open position that is farther from the knitted fabric passage path 101 than the illustrated position, and the capturing member at the upper end of the capturing / lowering mechanism 3 is also from the illustrated position. Is also retracted to a position separated from the knitted fabric passage path 101.

  When the tip of the set-up device is hooked on the set-up portion of the knitted fabric, the knitted fabric is knitted on the needle bed while pulling the knitted fabric downward. When the set-up device that moves downward passes through the knitted fabric lowering device 200 through the knitted fabric passage path 101, the set-up device is removed from the set-up portion of the knitted fabric, and the above-described knitted fabric lowering device 200 is used. The guide plate 2 is moved to a closed position (position shown) close to the knitted fabric passage path 101. Here, in the conventional knitted fabric lowering apparatus 200, in order to move the guide plate 2 to the closed position, the pair of base portions 1 on which the guide plate 2 is provided approach each other (the direction indicated by the arrow below the paper surface). It is moved.

  When the guide plate 2 is moved to the closed position, the knitted fabric is captured by the capturing / lowering mechanism 3 provided in the base portion 1, and the knitting of the knitted fabric is continued while lowering the knitted fabric downward. By arranging the guide plate 2 in the closed position, the movement of the knitted fabric is restricted by the guide plate 2 and the knitted fabric is sent out in a stable state along the knitted fabric passage path 101. A stable and good quality knitted fabric can be knitted.

Japanese Patent No. 3457161

  In the conventional knitted fabric lowering device 200, the guide plate 2 is moved together with the base portion 1, and therefore the knitted fabric lowering device 200 is large. The large knitting fabric lowering device 200 hinders the size and weight of the flat knitting machine 300 from being reduced.

  Further, in the configuration in which the base unit 1 is moved, there is a problem that it takes time to install the knitted fabric lowering device 200 with respect to the flat knitting machine 300. Since the mechanism for moving the base portion 1 is very large, the mounting of the moving mechanism for the base portion 1 is complicated, and the base portion 1 attached to the flat knitting machine 300 is actually moved and disposed on the base portion 1. It is necessary to check whether the knitted fabric can be properly captured and pulled down by the operation of the catching and pulling mechanism 3 to be pulled. Furthermore, when the knitted fabric is not properly captured by the capture / pull-down mechanism 3, it is necessary to readjust the movement of the capture / pull-down mechanism 3.

  The present invention has been made in view of the above circumstances, and one of its purposes is to provide a knitted fabric lowering device that has a simpler configuration than conventional ones and can be easily installed on a flat knitting machine. It is to provide.

  The present invention relates to a pair of base portions installed below each of a front needle bed and a rear needle bed in a flat knitting machine, above each base portion, and between the front needle bed and the rear needle bed. A guide plate provided at a position facing a knitted fabric passage route that is a path of the knitted fabric that hangs down from the mouth portion of the knitted fabric, and a catch that captures and lowers the knitted fabric that hangs down at a position facing the guide plate. -A knitted fabric lowering device comprising a lowering mechanism. In the knitted fabric lowering device, the base portion is fixed to the flat knitting machine. Further, the knitted fabric lowering device has at least a part of each guide plate between a closed position close to the knitted fabric passage route and an open position separated from the knitted fabric passage route than the closed position. An opening / closing mechanism that displaces is provided.

  As a knitted fabric lowering device according to an aspect of the present invention, a lower end of the guide plate is a fixed end fixed to the base portion, and an upper portion of the guide plate is a free end not fixed to the base portion, The opening / closing mechanism may include a form in which an opening / closing part, which is an upper part of the guide plate including the free end, is displaced between the closed position and the open position by deformation.

  As the knitted fabric lowering device according to an embodiment of the present invention, in which the guide plate includes the opening / closing portion, the opening / closing mechanism includes an opening / closing cam shaft having an opening / closing cam that presses the opening / closing portion, and the opening / closing cam shaft. And a drive unit for opening and closing that rotates.

As knitted fabric take-down device according to one embodiment of the present invention and a said opening and closing camshaft the opening and closing drive unit, the acquisition-pulling-down mechanism and the opening and closing drive unit is exemplified constructed form as follows be able to.
The catching / lowering mechanism includes a catching member having a protrusion for catching the knitted fabric, a swinging lever that moves the catching member up and down, and a pulling-down cam that swings the swinging lever up and down. A camshaft; and a pulling drive unit that rotates the pulling camshaft. The capturing / pulling mechanism captures and lowers the knitted fabric by the capturing member that moves up and down by rotating the pulling camshaft in a specific direction (forward rotation direction).
The opening / closing drive unit is provided on the main driving pulley, the opening / closing camshaft, the driven pulley driven by the rotation of the main driving pulley, and the direction in the opposite direction (reverse direction) to the specific direction (forward direction). A one-way rotating mechanism that rotates the main pulley according to the rotation of the lowering camshaft and does not cause the main pulley to interlock with the rotation of the lowering camshaft in the specific direction (forward rotation direction).

The apparatus for lowering a knitted fabric according to an aspect of the present invention includes an interval adjustment mechanism that adjusts an interval between the pair of base portions by changing a position of the base portion with respect to the flat knitting machine, and the interval adjustment mechanism Can include the following configurations.
-A fixed bracket fixed to the flat knitting machine-A movable bracket fixed to the base part-A shaft extending in the opposing direction of the pair of base parts and connecting the fixed bracket and the movable bracket-The shaft An adjustment member for a manufacturer that moves along the axial direction and changes the position of the movable bracket with respect to the fixed bracket together with the shaft. The movable bracket moves with respect to the fixed bracket by moving the movable bracket along the axial direction of the shaft. User adjustment member that changes the position of the

  The knitted fabric lowering device according to the present invention has a configuration in which the guide plate moves relative to the base portion, and therefore requires a mechanism for moving the base portion itself during knitting of the knitted fabric, like the conventional knitted fabric lowering device. And not. Since the knitted fabric lowering device of the present invention is smaller and lighter than the conventional knitted fabric lowering device, the flat knitting machine equipped with the knitted fabric lowering device is reduced in size and weight by the amount that the mechanism is unnecessary. can do.

  Moreover, the knitted fabric lowering device of the present invention can be easily installed on a flat knitting machine. This is because, in the knitted fabric lowering apparatus of the present invention, there is no work for installing a mechanism for moving the base portion in the flat knitting machine during knitting of the knitted fabric. Further, in the knitted fabric lowering device of the present invention, if the movement of the capturing / lowering mechanism with respect to the base portion is adjusted before fixing the position of the base portion in the flat knitting machine, it is captured after the position of the base portion is fixed. -The trouble of readjusting the movement of the pulling mechanism can be reduced. This is because the base portion does not move when the knitted fabric is knitted, and the catching / lowering mechanism can be easily arranged at an appropriate position as long as the base portion is fixed at a predetermined position of the flat knitting machine with high accuracy.

  By using a guide plate whose upper side is an opening / closing portion, a knitted fabric pulling-down device capable of opening / closing the guide plate simply by deforming the opening / closing portion can be provided.

  By constructing the opening / closing mechanism of the guide plate by the opening / closing cam shaft, the configuration of the opening / closing mechanism can be simplified. Even if a plurality of guide plates are provided for one base portion, a plurality of opening and closing cams corresponding to the respective guide plates may be provided on one opening and closing cam shaft, and each guide plate is individually supported. This is because it is not necessary to provide an opening / closing mechanism.

  The opening / closing camshaft for opening and closing the guide plate is linked to the lowering camshaft for operating the capture / lowering mechanism, so that the opening / closing camshaft and the lowering camshaft are driven by a single drive source (for example, a motor). Can be rotated. That is, it is possible to drive both the opening / closing mechanism and the capturing / lowering mechanism with a single driving source. Here, the one-way rotation mechanism prevents the opening / closing camshaft from rotating when the lowering camshaft rotates in the forward rotation direction, so that the guide plate opens and closes when the knitted fabric is lowered by the catching / lowering mechanism. The holding of the knitted fabric by the guide plate does not become unstable.

  The distance between the pair of base portions (base distance) in the knitted fabric lowering device is adjusted at the factory. On the other hand, since the thickness of the knitted fabric varies depending on the knitted fabric to be knitted, there is a need for the user to adjust the base interval. In order to meet such needs, the interval adjusting mechanism according to the present invention is integrally provided with a manufacturer's interval adjusting mechanism and a user's interval adjusting mechanism. Therefore, the spacing adjustment mechanism is more compact than before, and this spacing adjustment mechanism is applied to the knitted fabric lowering device in the flat knitting machine, thereby improving the productivity of the flat knitting machine including cost and assembly workability. be able to.

It is a schematic perspective view which shows a part of knitted fabric pulling-down apparatus shown in embodiment. It is the schematic which shows the internal structure of the pulling-down apparatus of the knitted fabric of FIG. It is a schematic explanatory drawing of the opening-closing mechanism with which the knitted fabric pulling-down apparatus of FIG. 1 is equipped, (A) is the state in which the opening-and-closing part of a guide plate is in an open position, (B) is the opening-and-closing part of a guide plate in a closed position. It is a figure which shows a certain state. (A)-(C) are the schematic explanatory drawings which show operation | movement of the capture | acquisition and pulling-down mechanism with which the pulling-down apparatus of the knitted fabric of FIG. 1 is equipped with time. (A) is a schematic front view of the space | interval adjustment mechanism with which the knitted fabric pulling-down apparatus is equipped, (B) is a bottom view of the space | interval adjustment mechanism. It is a three-view figure of the fixed bracket with which a space | interval adjustment mechanism is equipped, (A) is a front view, (B) is a right view, (C) is a bottom view. It is a three-view figure of the movable bracket with which a space | interval adjustment mechanism is equipped, Comprising: (A) is a front view, (B) is a right view, (C) is a bottom view. It is AA sectional drawing of FIG. 5 (B). It is the schematic of the eccentric collar which is a user adjustment member with which a space | interval adjustment mechanism is equipped, Comprising: (A) is a front view, (B) is a top view. It is explanatory drawing explaining the movement of the movable bracket by an eccentric collar. It is the schematic of the conventional knitted fabric lowering apparatus.

  Hereinafter, a knitted fabric lowering apparatus according to an embodiment will be described with reference to the drawings.

<Embodiment 1>
≪Overall structure≫
The knitted fabric lowering device according to the embodiment hangs down from the mouth part GP formed between the front needle bed FB and the rear needle bed BB, similarly to the conventional knitted fabric lowering device 200 shown in FIG. It is a device for capturing and pulling down the knitted fabric. FIG. 1 is a schematic perspective view showing a part of a portion of the knitting fabric lowering apparatus 100 arranged below the rear needle bed of a flat knitting machine. In the actual knitted fabric lowering apparatus 100, the same configuration as the illustrated configuration is continued on the left side of the drawing, and the configuration illustrated in the position opposite to the illustrated configuration (that is, the position below the front needle bed) is also shown. There is a similar configuration.

  The knitted fabric lowering apparatus 100 according to the embodiment includes a base portion 1, a guide plate 2, and a catching / lowering mechanism 3, similarly to the conventional knitted fabric lowering apparatus 200 (see FIG. 11). Unlike the conventional configuration, the knitted fabric lowering device 100 is configured such that the upper portion of the guide plate 2 is displaced with respect to the base portion 1 without the base portion 1 being displaced with respect to the flat knitting machine. 2 is configured to be arranged in an open position or a closed position. Hereinafter, each configuration of the knitted fabric lowering apparatus 100 will be described in detail.

≪Base part≫
The base portion 1 is a portion that becomes a base of the knitting fabric lowering device 100, and a large number of capture and lowering mechanisms 3 described later are accommodated therein. The base portion 1 is provided below the needle bed in the flat knitting machine. The base portion 1 is fixed to a main body frame of a flat knitting machine, a lower end portion of a main body bed, or the like via a gap adjusting mechanism 5 (FIG. 2). The interval adjusting mechanism 5 will be described later with reference to FIGS.

  An opening / closing drive portion 41 for driving an opening / closing mechanism 4 described later is provided on one end side (right end portion in FIG. 1) of the base portion 1 in the extending direction. The opening / closing drive unit 41 will be described later.

≪Guide board≫
As shown in FIGS. 1 and 2, the lower portion of the guide plate 2 is a fixed end fixed to the base portion 1 with screws 2 </ b> B, and the upper portion of the guide plate 2 is a free end that is not fixed to the base portion 1. . The upper part of the guide plate 2 including the free end is an opening / closing part 20 that is displaced between an open position (see FIG. 3A) and a closed position (see FIG. 3B) by elastic deformation. is there. The opening / closing portion 20 includes a portion (proximity portion 20a) that is closest to the knitted fabric in the closed position shown in FIG. As shown in FIGS. 2 and 3, a portion of the opening / closing portion 20 on the free end side with respect to the proximity portion 20a is bent in a direction away from the knitted fabric passage path 101 and further bent downward. Therefore, when the guide plate 2 is viewed from the side, the guide plate 2 has a shape that is bent substantially in a J-shape.

  As shown in a partially enlarged view surrounded by a dotted line in FIG. 1, a plurality of slits 2 </ b> S are formed in the opening / closing portion 20 of the guide plate 2. A needle (protrusion part) 33N provided in a capturing member 33 of the capturing / lowering mechanism 3 described later is inserted into the slit 2S. Since the needle 33N protrudes from the guide plate 2 through the slit 2S, the capturing member 33 can capture the knitted fabric facing the guide plate 2.

  The guide plate 2 of this example is configured such that the opening / closing part 20 is displaced with respect to the base part 1. The opening / closing part 20 is displaced by an opening / closing mechanism 4 described later. As a situation in which the opening / closing part 20 is displaced to the open position by the opening / closing mechanism 4, when transferring the stitches with racking in the middle of pulling down the knitted fabric other than when the unillustrated set-up device passes through the opening / closing part 20 And so on.

≪Capture and lowering mechanism≫
The catching / lowering mechanism 3 is a mechanism that catches the knitted fabric facing the guide plate 2 and lowers the knitted fabric downward. For example, a known configuration shown in Patent Document 1 can be used. The catching / pulling mechanism 3 includes a catching member 33 having a needle for catching the knitted fabric, and pulls the knitted fabric downward by moving the catching member 33 up and down. When the guide plate 2 is in the open position, the capture member 33 is always retracted to a position separated from the knitted fabric passage path 101 (position A in FIG. 3B described later), and the needle of the capture member 33 33N is not caught on the knitted fabric. Details of the capture / pull-down mechanism 3 of this example will be described later.

≪Opening and closing mechanism≫
The opening / closing mechanism 4 will be described mainly with reference to FIGS. 1 and 3. In FIG. 3, only the structure which concerns on the opening / closing of the guide plate 2 and its guide plate 2 is shown in figure.

  As shown in FIG. 1, the opening / closing mechanism 4 of this example includes an opening / closing camshaft 40 and an opening / closing drive unit 41 that rotates the opening / closing camshaft 40. The opening / closing camshaft 40 is inserted into the opening / closing portion 20 (portion bent approximately in a J-shape) of the guide plate 2 and supported by the shaft support portion 10 which is a part of the base portion 1 as shown in FIG. Has been. The opening / closing camshaft 40 includes a plurality of opening / closing cams 40C that press the opening / closing portion 20 from the inside thereof. The opening / closing cams 40C are separated from each other in the longitudinal direction of the opening / closing cam shaft 40, and the two opening / closing cams 40C are configured to press the opening / closing portion 20 of one guide plate 2.

  On the other hand, the opening / closing drive unit 41 is not particularly limited as long as the opening / closing cam shaft 40 can be rotated, but in this example, a drive source for operating the capture / pull-down mechanism 3 is used. The detailed configuration will be described later with items provided.

  As shown in FIG. 3A, the opening / closing cam 40 </ b> C of this example is an eccentric cam whose center is deviated from the axis of the opening / closing cam shaft 40. In this example, of the opening / closing cam 40C, the protruding portion protruding radially outward of the opening / closing cam shaft 40 is the far end 20b of the opening / closing portion 20 of the guide plate 2 (the J-shaped tip portion of the opening / closing portion 20). ) Is pressed from the inside. In the state shown in FIG. 3A, the opening / closing cam 40C presses the far end 20b of the opening / closing portion 20 of the guide plate 2 from the inner side to the outer side (the side away from the knitted fabric passage path 101). Yes. As a result, the opening / closing part 20 of the guide plate 2 is elastically deformed, and the proximity part 20a of the opening / closing part 20 is disposed at a position (open position) separated from the knitted fabric passage path 101. Here, the opening / closing cam 40C is not limited to an eccentric cam, and may be a substantially elliptical cam such as a lowering cam 39C described later.

  When the opening / closing camshaft 40 is rotated 180 ° from the state shown in FIG. 3A, the protruding portion of the opening / closing cam 40C is disposed on the knitted fabric passage path 101 side as shown in FIG. The portion of the cam 40 </ b> C that is smoothly connected to the outer peripheral surface of the opening / closing cam shaft 40 is in a state where the far end 20 b is supported (pressed) from the inside. At this time, the far end portion 20b is displaced toward the knitted fabric passage path 101 from the position shown in FIG. 3A, and the proximity portion 20a connected to the far end portion 20b is also close to the knitted fabric passage path 101. It is displaced to the position (closed position). Here, among the plurality of opening / closing cams 40C arranged in the axial direction of the opening / closing cam shaft 40, the radial direction (phase) of the protruding portions of some of the opening / closing cams 40C may be changed. By doing so, it is possible to arrange some of the guide plates 2 in the closed position and the other guide plates 2 in the open position among the plurality of guide plates 2 arranged in the depth direction of the drawing.

  When the proximity portion 20a is displaced to the closed position shown in FIG. 3 (B), the capture member 33 of the capture / lowering mechanism 3 is moved from the position of point A (retracted position) to the position of point B (knitted fabric capture position). The knitted fabric is captured by the needle 33N of the capturing member 33. Then, the force that the capturing member 33 tries to move from the position of point B to the position of point C (lower end position) with its own weight acts on the knitted fabric, so that the knitted fabric captured by the capturing member 33 moves downward. Be lowered. That is, the trajectory of the capturing member 33 from point A → point B → point C is a capturing trajectory that captures and lowers the knitted fabric.

  The capture member 33 that has drawn the capture track and lowered the knitted fabric is moved from the point C to the point B and further moved from the point B to the point A by the configuration described later. Since the needle 33N of the capturing member 33 extends obliquely downward, the needle 33N of the capturing member 33 is detached from the knitted fabric while the capturing member 33 moves from point C to point B. That is, the trajectory of the capturing member 33 from point C → point B → point A is a non-capturing trajectory that does not capture the knitted fabric. In this way, the knitted fabric can be pulled down by the capture member 33 repeating the movement along the capture track and the movement along the non-capture track.

≪Effect≫
The knitted fabric lowering apparatus 100 having the above-described configuration is smaller and lighter than the conventional knitted fabric lowering apparatus. The knitted fabric lowering apparatus 100 of this example employs a configuration in which a part of the guide plate 2 (opening / closing part 20) is displaced with respect to the base portion 1. Therefore, the knitted fabric lowering apparatus 100 of this example has a conventional structure. This is because a configuration for moving the base portion 1 itself as in the configuration is not necessary. In addition, since there is no work for installing a configuration for moving the base portion 1, the knitted fabric lowering device 100 can be easily installed in the flat knitting machine.

  Moreover, if it is the structure of this example, the capture | acquisition and pulling-down mechanism 3 can be arrange | positioned in an appropriate position by determining the fixed position of the base part 1 with sufficient precision. For this reason, it is possible to reduce the trouble of re-adjusting the position (the amount of protrusion of the needle 33N from the guide plate 2 and the interval between the opposing needles 33N) of the catching / lowering mechanism 3 after the base portion 1 is installed in the flat knitting machine. Can do.

≪Other composition≫
In the knitted fabric pulling device 100 of this example, an opening / closing drive unit 41 for operating the opening / closing mechanism 4 is configured by using a part of the capturing / pulling mechanism 3 (see FIG. 1). Hereinafter, the configuration of the capture / pull-down mechanism 3 and the configuration of the opening / closing drive unit 41 will be described.

[Capture / Pulldown mechanism]
As shown in FIG. 2, the catching / lowering mechanism 3 of this example includes a plurality of slide mechanism parts 3α that slide up and down while catching and lowering the knitted fabric, and a swing mechanism that moves the slide mechanism part 3α up and down. And a holding mechanism 3γ that holds the slide position of the slide mechanism 3α at a specific position. In addition, the capture / pull-down mechanism 3 may include a pull-down force adjusting mechanism unit (not shown). A known configuration can be used for the pull-down force adjusting mechanism.

[[Slide mechanism]]
Two slide mechanism portions 3α are provided for one guide plate 2 (see also FIG. 1). Each slide mechanism unit 3α includes a slide base 30 fixed to the base unit 1 and a slider 31 supported on the slide base 30 so as to be slidable in the vertical direction. A support member 32 that supports the capture member 33 and the weight 34 is fixed to the slider 31 (refer to FIG. 1 for the capture member 33 and the weight 34). The support member 32 has substantially the same width as the capturing member 33 in the depth direction of the paper surface, and includes a roller 32R at a position on the front side of the paper surface in the width direction.

  The capturing member 33 is supported via the shaft portion S1 so as to be swingable in the left-right direction (the direction approaching the knitted fabric passage path 101 and the direction away from the knitted fabric passage path 101). A needle 33N is provided on the upper end portion of the capturing member 33, and the knitted fabric can be captured by the needle 33N (see also FIG. 1). The capture member 33 includes a long arm 33A disposed on the back side of the paper surface, and a shaft portion S2 extending in the paper surface depth direction provided at the upper end of the arm 33A is fitted into the slit 32S of the support member 32. . The shaft portion S2 is provided with a roller 33R that comes into contact with the claw member 11 provided above the base portion 1 when the capturing member 33 slides upward. The claw member 11 is inclined in a direction away from the knitted fabric passage path 101 from the lower end toward the upper end. Therefore, when the capture member 33 slides upward, the roller 33R of the capture member 33 moves along the inclination of the claw member 11, and the upper end portion of the capture member 33 is in the right direction on the paper within the length of the slit 32S. It swings in the direction away from the knitted fabric passage path 101. On the other hand, a portion of the arm 33A below the shaft portion S1 has a role of a pendulum that urges the upper end portion of the capturing member 33 toward the knitted fabric passage path 101. Therefore, when the capture member 33 slides downward from the position of the upper end of the slide, the roller 33R of the capture member 33 moves along the claw member 11, and the upper end side portion of the capture member 33 is in the left direction of the paper (the knitted fabric passage route). Oscillate in a direction approaching 101). Note that the lower part of the arm 33A does not come into contact with the swing lever 38 of the swing mechanism 3β described later.

[[Oscillation mechanism]]
The swing mechanism portion 3β includes a substantially L-shaped swing lever 38 and a pull-down cam shaft 39. One swing lever 38 is provided for one slide mechanism portion 3α. One end of the swing lever 38 is pivotally supported on the base portion 1 via the shaft portion S3, and the other end swings in the vertical direction. The other end of the swing lever 38 supports a roller 32R provided at the lower end of the support member 32 of the slide mechanism portion 3α from below. Therefore, if the other end swings upward, the support member 32 and the capture member 33 provided on the support member 32 move upward. The swing lever 38 is provided with a roller 38R at the intermediate position. Further, a slit 38S penetrating in the vertical direction of the drawing is formed in a portion of the swing lever 38 closer to the other end than the roller 38R.

  The lowering camshaft 39 of the swing mechanism 3β is a member provided with a plurality of lowering cams 39C that swing the other end of the swing lever 38 up and down. One pull-down camshaft 39 is provided for one base portion 1. Each lowering cam 39C provided on the lowering camshaft 39 is formed in a substantially elliptical shape and corresponds to each swing lever 38 (the lowering cam 39C may be an eccentric cam). By changing the radial direction (phase) of the protruding portion of each pull-down cam 39C, the timing of pulling down the knitted fabric by each slide mechanism portion 3α can be shifted. By shifting the timing of each slide mechanism portion 3α, any of the plurality of capturing members 33 arranged in the depth direction of the paper surface always captures the knitted fabric. As a result, while knitting the knitted fabric, it is possible to continue to apply a downward tension to the knitted fabric, and to stabilize the knitted state of the knitted fabric.

  The lowering camshaft 39 of the swing mechanism 3β can be rotated by a driving source (lowering driving unit) (not shown) such as a motor. If it is a motor, the pull-down camshaft 39 can be rotated in any direction.

[[Holding mechanism]]
The holding mechanism portion 3γ has an L-shaped front end portion 36 that protrudes toward the front side of the drawing, and the front end portion 36 engages with the inner surface of the support member 32 of the slide mechanism portion 3α, thereby supporting the support member 32. It is the structure which fixes the position of the capture member 33 provided in a specific position, Comprising: A well-known structure can be utilized. The holding mechanism portion 3γ can use an electromagnetic configuration using a solenoid. Examples of the specific position include a position close to point A or point A in FIG. 3B and a position close to point B or point B. The former position is a position (retracted position) where the capturing member 33 is retracted from the knitted fabric passage path 101. The latter position is a position for maintaining the state in which the knitted fabric is captured by the capturing member 33 (knitted fabric capturing position). For example, in the case of sweater knitting, when the knitting of the sleeve is stopped and only the knitting of the body is performed, the capturing member 33 for capturing the sleeve is fixed at the position of the point B or in the vicinity of the point B, and the capturing member 33 for capturing the body is move. By doing so, it is possible to avoid the sleeve from being pulled downward along with the knitting of the body, and the stitch of the sleeve from being stretched.

[[Operation order]]
The operation of the capture / pull-down mechanism 3 having the above configuration will be described with reference to FIG. 4A shows a state in which the capture member 33 is pushed up most upward and retracts from the knitted fabric passage path 101. FIG. 4B shows a state in which the capture member 33 is close to the knitted fabric passage path 101 and the knitted fabric is moved. The capturing state, FIG. 4C, is a state where the capturing member 33 is located at the lowest position. The positions of the capturing members 33 in FIGS. 4A, 4B, and 4C correspond to the positions of points A, B, and C in FIG.

  In FIG. 4A, the roller 38R of the swing lever 38 is pushed up vertically by the protruding end of the pull-down cam 39C. Therefore, the other end (the end opposite to the shaft portion S3) of the swing lever 38 is It is swung upward. The other end of the swing lever 38 pushes up the roller 32R at the lower end of the support member 32, and slides the capture member 33 provided on the support member 32 upward. At that time, the roller 33R provided at the upper end of the arm 33A of the capturing member 33 moves along the claw member 11 of the base portion 1, and the capturing member 33 rises in a direction away from the knitted fabric passage path 101.

  When the lowering camshaft 39 rotates counterclockwise (specific direction) from the state of FIG. 4A, the protruding end of the lowering cam 39C is displaced from the roller 38R and swings as shown in FIG. 4B. The other end of the lever 38 is lowered. Accordingly, the upper end portion (portion where the needle 33N is provided) of the capturing member 33 swings toward the knitted fabric passage path 101 while the capturing member 33 is lowered.

  When the lowering camshaft 39 further rotates counterclockwise, the protruding portion of the lowering cam 39C fits into the slit 38S of the swing lever 38 as shown in FIG. The edge is in the lowest position. At this time, the capturing member 33 is also lowered to a position supported by the other end of the swing lever 38.

  When the lowering camshaft 39 is further rotated counterclockwise, the capturing member 33 is held at the point C until the protruding portion of the lowering cam 39C comes into contact with the swing lever 38. Then, the swinging lever 38 is gradually pushed up by the protruding portion of the lowering cam 39C, so that the capturing member 33 moves along the point C → the point B → the point A. In this way, by rotating the pull-down camshaft 39 counterclockwise (forward direction), as shown in FIG. 3 (B), the capturing member 33 becomes point A → point B → point C (capturing trajectory). ) And the movement along point C → point B → point A (non-capturing trajectory) are repeated, and the knitted fabric is pulled down.

[Opening and closing drive]
As shown in FIG. 1, the opening / closing drive unit 41 of the present example includes a main pulley 41A, a driven pulley 41B, an endless belt 41C, and a one-way rotating mechanism 41D. The main driving pulley 41A is rotatably provided on the side surface of the base portion 1 and includes a gear portion at the tip thereof. The driven pulley 41B is a member that is driven by the rotation of the main driving pulley 41A by an endless belt 41C such as a timing belt spanned between the main driving pulley 41A and the driven pulley 41B. The driven pulley 41B is provided on the opening / closing camshaft 40, and the opening / closing camshaft 40 also rotates as the driven pulley 41B rotates. The one-way rotation mechanism 41D rotates the main pulley 41A when the lowering camshaft 39 rotates clockwise, and does not interlock the main pulley 41A with the rotation when the lowering camshaft 39 rotates counterclockwise. It is for doing so.

  The one-way rotation mechanism 41 </ b> D in this example is configured by a gear member provided on the outer periphery of the pull-down camshaft 39 outside the base portion 1. The gear member rotates together with the gear member when the pull-down cam shaft 39 rotates clockwise, and the pull-down cam with respect to the gear member when the pull-down cam shaft 39 rotates counterclockwise. A mechanism for idling the shaft 39 is provided. Examples of such a mechanism include a one-way clutch mechanism and a ratchet mechanism.

[Effects of other configurations]
According to the capturing / lowering mechanism 3 and the opening / closing drive unit 41 of the opening / closing mechanism 4, when the lowering camshaft 39 is rotated clockwise, the gear member constituting the one-way rotating mechanism 41D is also rotated clockwise. Rotate to. The main driving pulley 41A having a gear portion meshing with the gear member rotates counterclockwise, and the driven pulley 41B also rotates counterclockwise by the endless belt 41C spanned between the main driving pulley 41A and the driven pulley 41B. Then, the opening / closing cam shaft 40 also rotates counterclockwise together with the driven pulley 41B, and the opening / closing portion 20 of the guide plate 2 is opened / closed by the opening / closing cam 40C. As described above, normally, separate drive sources are required for the capture / pull-down mechanism 3 and the opening / closing mechanism 4, but according to the above configuration, the drive source (pull-down drive) for operating the capture / pull-down mechanism 3 is used. The opening / closing mechanism 4 can also be operated.

  In addition, since the one-way rotation mechanism 41D is formed in the opening / closing drive unit 41 of this example, when the pulling camshaft 39 is rotated counterclockwise and the knitted fabric is pulled down by the catching member 33, the one-way rotation mechanism 41D is used. The gear member of the direction rotating mechanism 41D does not rotate. That is, since the main driving pulley 41A having the gear portion meshing with the gear member does not rotate, the opening / closing mechanism 4 does not operate. Therefore, the guide plate 2 does not open and close when the knitted fabric is lowered, and the holding of the knitted fabric by the guide plate 2 does not become unstable.

≪Interval adjustment mechanism≫
The interval adjusting mechanism 5 shown in FIG. 2 will be described in detail with reference to FIGS. The interval adjustment mechanism 5 shown in FIG. 5 is a mechanism that adjusts the interval between the pair of base portions 1 by changing the position of the base portion 1 with respect to the flat knitting machine 300. A plurality of interval adjusting mechanisms 5 are provided at the lower end position of each base portion 1 with an interval in the longitudinal direction of the base portion 1 (the depth direction in the drawing of FIG. 2). The spacing adjusting mechanism 5 includes a fixed bracket 6 fixed to the flat knitting machine 300, a movable bracket 7 fixed to the base portion 1, a shaft 8 connecting the brackets 6 and 7, and a base portion 1 of the manufacturer. A manufacturer adjusting member 8A used for adjusting the position and a user adjusting member 9 used for adjusting the position of the base portion 1 by the user are provided. The difference between the manufacturer adjustment member 8A and the user adjustment member 9 will be described later.

[Fixing bracket]
As shown in FIG. 6, the fixing bracket 6 includes an FB main body portion 60, a flat attachment portion 69 provided at the upper end of the FB main body portion 60, a first leg piece 61 and a first leg piece 61 provided at the lower end of the FB main body portion 60. A bipod piece 62. The first leg piece 61 and the second leg piece 62 are separated from each other in the facing direction of the pair of base portions 1 (the left-right direction in FIG. 1 and FIG. 6A). The first leg piece 61 and the second leg piece 62 are provided with an FB shaft hole 63 through which a shaft 8 (FIGS. 5 and 8) described later is inserted. The axis of the FB shaft hole 63 coincides with the axis of the shaft 8 and also coincides with the opposing direction of the pair of base portions 1.

  As shown in FIG. 6C, the first leg piece 61 is formed with an FB long hole 64 that communicates with the FB shaft hole 63 from the lower end surface of the first leg piece 61. The major axis direction of the FB long hole 64 is oriented in a direction parallel to the axial direction of the FB shaft hole 63.

  As shown in FIG. 5, the fixing bracket 6 having the above configuration is fixed to the lower part of the main body bed of the flat knitting machine 300 by screws 6 </ b> A.

[Movable bracket]
As shown in FIG. 7, the movable bracket 7 includes an MB main body 70, a mounting portion 79 provided at the upper end of the MB main body 70, and a side from the MB main body 70 (FIG. 5, FIG. 7A, FIG. 7 (the right direction of ( C )). A portion of the overhang portion 72 that is connected to the MB main body portion 70 is divided into two parts. For this reason, a central portion of the movable bracket 7 has a height direction of the movable bracket 7 (FIGS. 5A and 7A). The leg piece insertion hole 71 penetrating in the vertical direction) is formed. As shown in FIG. 5B, when the movable bracket 7 and the fixed bracket 6 are combined, the first leg piece 61 of the fixed bracket 6 is inserted into the leg piece insertion hole 71.

  The overhanging portion 72 is provided with an MB shaft hole 73 that is coaxial and has the same diameter as the FB shaft hole 63 of the fixed bracket 6. Further, an MB long hole 74 that communicates with the MB shaft hole 73 from its lower end surface is formed in the overhang portion 72. The major axis direction of the MB long hole 74 is oriented in a direction perpendicular to the axial direction of the MB shaft hole 73 (vertical direction in FIG. 7C).

  As shown in FIG. 5, the movable bracket 7 having the above configuration is fixed to the lower end of the base portion 1 by screws 7 </ b> A and supports the base portion 1.

[shaft]
In the description of the shaft 8, FIG. 8 which is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 8, the shaft 8 is a cylindrical body and includes a first screw hole 81, a second screw hole 82, and a third screw hole 83. The first screw hole 81 is provided on the end surface of the shaft 8 on the fixing bracket 6 side (the right side in the drawing), and the axis thereof coincides with the axis of the shaft 8. The second screw hole 82 is provided on the peripheral surface in the vicinity of the end of the shaft 8 on the movable bracket 7 side (left side in the drawing), and the axis thereof is orthogonal to the axis of the shaft 8. The third screw hole 83 is provided on the circumferential surface of the intermediate portion in the length direction of the shaft 8, and its axis is parallel to the axis of the second screw hole 82. The third screw hole 83 includes a large-diameter portion disposed on the screw head side of the third screw 8C and a small-diameter portion having a diameter smaller than that of the large-diameter portion. Is not formed, and a thread groove is formed in the small diameter portion.

  The shaft 8 is a member that connects the fixed bracket 6 and the movable bracket 7. In order to connect both brackets 6, 7, the first leg 61 of the fixed bracket 6 is disposed in the leg piece insertion hole 71 of the movable bracket 7, and the FB shaft hole 63 of the fixed bracket 6 and the MB shaft of the movable bracket 7. It is preferable to align the hole 73 coaxially and insert the shaft 8 through the FB shaft hole 63 and the MB shaft hole 73.

  The first screw 8 </ b> A is screwed into the first screw hole 81 of the shaft 8. A presser plate 8D is interposed between the screw head of the first screw 8A and the side surface of the second leg piece 62 of the fixing bracket 6. Further, a nut 8N is attached to the movable bracket 7 side of the presser plate 8D in the first screw 8A. The shaft 8 is fixed to the fixing bracket 6 through the pressing plate 8D and the first screw 8A. The pressing plate 8D is fixed to the fixing bracket 6 by a fourth screw 8E (see also FIG. 5). If the first screw 8 </ b> A is rotated, the shaft 8 can be moved back and forth with respect to the fixed bracket 6. The first screw 8 </ b> A is a manufacturer adjustment member for the manufacturer to adjust the position of the base portion 1.

  A second screw (shaft fixing screw) 8B disposed in the FB long hole 64 provided in the first leg piece 61 of the fixing bracket 6 is screwed into the second screw hole 82 of the shaft 8. A washer 8W larger than the FB long hole 64 is interposed between the second screw 8B and the first leg piece 61. When the second screw 8B is tightened, the lower surface portion of the first leg piece 61 is sandwiched between the screw head of the second screw 8B and the peripheral surface of the shaft 8, and the shaft 8 is fixed to the fixing bracket 6. If the second screw 8B is loosened, the shaft 8 can be moved with respect to the fixed bracket 6.

  The third screw hole 83 of the shaft 8 is screwed with a third screw (movable bracket fixing screw) 8 </ b> C disposed in the MB long hole 74 provided in the projecting portion 72 of the movable bracket 7. An eccentric collar 9 is interposed between the third screw 8 </ b> C and the overhang portion 72. As will be described later, the eccentric collar 9 is a user adjustment member for the user to adjust the position of the base portion 1. When the third screw 8 </ b> C is tightened, the lower surface portion of the overhang portion 72 is sandwiched between an eccentric collar 9 described later and the peripheral surface of the shaft 8, and the movable bracket 7 is fixed to the shaft 8. If the third screw 8C is loosened, the movable bracket 7 can be moved relative to the shaft 8.

[Eccentric color]
As shown in FIG. 9, the eccentric collar 9 includes a storage portion 91 that stores the screw head of the third screw 8 </ b> C, and a through portion 92 through which the shaft portion of the third screw 8 </ b> C (FIG. 8) passes. On the outer periphery of the eccentric collar 9, as shown in FIG. 9B, a cylindrical eccentric portion 93 having a center shifted from the axis of the eccentric collar 9 and a cylindrical engaging portion having a center coincident with the axis. 94 is provided. As shown in FIG. 8, the eccentric portion 93 is fitted into the MB long hole 74 of the movable bracket 7, and the engaging portion 94 is fitted into the large diameter portion of the third screw hole 83 of the shaft 8.

[Usage of interval adjustment mechanism]
When the manufacturer adjusts the position of the base portion 1 at the factory using the interval adjusting mechanism 5, the second screw 8 </ b> B shown in FIG. 8 is loosened and the fixing of the shaft 8 to the fixing bracket 6 is released. Next, the first screw 8 </ b> A is rotated to advance and retract the shaft 8 with respect to the fixed bracket 6. Since the shaft 8 is fixed to the movable bracket 7 with the third screw 8C, the movable bracket 7 and the base portion 1 (FIG. 5) to which the movable bracket 7 is fixed advance and retract as the shaft 8 advances and retracts. As shown in FIG. 10, the second screw 8 </ b> B is disposed so as to penetrate the FB long hole 64, so that the movement of the first screw 8 </ b> A accompanying the advance / retreat of the shaft 8 within the range of the length of the FB long hole 64. Is not inhibited by the fixing bracket 6.

  On the other hand, when the user adjusts the position of the base portion 1 using the distance adjusting mechanism 5, the third screw 8 </ b> C shown in FIG. 8 is loosened, the fixed of the movable bracket 7 to the shaft 8 is released, and the eccentric collar 9 is rotated. . As shown in FIG. 10, the center of the eccentric portion 93 indicated by the x mark is shifted from the center of the engaging portion 94 indicated by the black dot (the axis of the eccentric collar 9). The eccentric portion 93 of the eccentric collar 9 pushes the inner wall of the MB long hole 74 of the movable bracket 7, and the position of the movable bracket 7 with respect to the shaft 8 changes. The moving range of the movable bracket 7 can be changed by the diameter of the eccentric part 93 and the shape and size of the MB long hole 74. The user operates only the third screw 8C and the eccentric collar 9 without turning the first screw 8A or the second screw 8B. By doing so, the origin of the shaft 8 relative to the fixed bracket 6 (flat knitting machine 300) adjusted by the manufacturer (position serving as a reference for movement of the base portion 1) is maintained.

  As described above, the distance adjusting mechanism 5 of this example is compact because the manufacturer adjusting mechanism and the user adjusting mechanism are combined into one. Therefore, the productivity of the flat knitting machine 300 including cost and assembly workability can be improved by applying the interval adjusting mechanism 5 to the knitted fabric lowering apparatus 100 in the flat knitting machine 300. The machine 300 can be reduced in weight.

<Embodiment 2>
Unlike Embodiment 1, the opening / closing part 20 of the guide plate 2 is pressed by pressing the back surface (the surface opposite to the surface facing the knitted fabric passage path 101) of the proximity part 20a in the opening / closing part 20 of FIG. It is good also as a structure which moves to a closed position. In this case, the opening / closing mechanism 4 using the opening / closing camshaft 40 can be used as in the first embodiment.

<Embodiment 3>
Different from the first and second embodiments, the opening / closing portion 20 of the guide plate 2 can be opened and closed by a linear motion mechanism such as a solenoid having a plunger. In this case, each opening / closing part 20 can be opened / closed independently by individually controlling energization to the solenoids that open / close the opening / closing parts 20 of each guide plate 2. For example, it is possible to arrange some of the opening / closing parts 20 of the guide plates 2 in the closed position and arrange the other opening / closing parts 20 of the guide plates 2 in the open position.

  By using the linear motion mechanism, the entire guide plate 2 can be configured to be movable in a direction approaching the knitted fabric passage path 101. For example, it is set as the structure which fixes the upper part and lower part of the guide plate 2 to the base part 1 via the solenoid which has a plunger. In this case, the entire guide plate 2 can be moved relative to the base portion 1 by operating the plunger by energizing the solenoid.

DESCRIPTION OF SYMBOLS 100 Knitted fabric lowering | reduction apparatus 101 Knitted fabric passage path 1 Base part 10 Shaft support part 11 Claw member 2 Guide plate 2B Screw 20 Opening / closing part 2S Slit 20a Proximity part 20b Far end part 3 Capturing / lowering mechanism 3 (alpha) slide mechanism part S1, S2 Shaft part 30 Slide base 31 Slider 32 Support member 32R Roller 32S Slit 33 Capture member 33A Arm 33N Needle (projection part) 33R Roller 34 Weight 3β Swing mechanism part S3 Shaft part 38 Swing lever 38S Slit 38R Roller 39 Pull-down camshaft 39C Pull-down cam 3γ Holding mechanism part 36 Tip part 4 Opening / closing mechanism 40 Opening / closing cam shaft 40C Opening / closing cam 41 Opening / closing drive part 41A Driving pulley 41B Driven pulley 41C Endless belt 41D One-way rotating mechanism 5 Spacing adjustment mechanism 6 Fixed bracket DESCRIPTION OF SYMBOLS 0 FB main-body part 61 1st leg piece 62 2nd leg piece 69 Attachment part 63 FB shaft hole 64 FB long hole 6A Screw 7 Movable bracket 70 MB main-body part 71 Leg piece insertion hole 72 Overhang part 79 Attachment part 73 MB shaft hole 74 MB Long hole 7A Screw 8 Shaft 8A First screw (Adjustment member for manufacturer) 8D Presser plate 8B Second screw (Shaft fixing screw)
8C Third screw (movable bracket fixing screw)
8E Fourth screw 8N Nut 8W Washer 81 First screw hole 82 Second screw hole 83 Third screw hole 9 Eccentric collar (adjustment member for user)
91 Storage part 92 Penetration part 93 Eccentric part 94 Engagement part 200 Conventional knitting fabric lowering apparatus 300 Flat knitting machine FB Front needle bed BB Rear needle bed GP Tooth part

Claims (4)

A pair of base portions installed below the front needle bed and the rear needle bed in the flat knitting machine, and a mouth portion above each base portion and between the front needle bed and the rear needle bed A guide plate provided at a position facing a knitted fabric passing path that is a path of the knitted fabric hanging from the catching and pulling mechanism for capturing the knitted fabric hanging at a position facing the guide plate and lowering the knitted fabric downward. In a knitted fabric lowering device comprising:
The base portion is fixed to the flat knitting machine;
An opening / closing mechanism for displacing at least a part of each guide plate between a closed position close to the knitted fabric passage path and an open position separated from the knitted fabric passage path than the closed position;
The lower end of the guide plate is a fixed end fixed to the base portion, and the upper portion of the guide plate is a free end not fixed to the base portion,
The knitting fabric pulling device , wherein the opening / closing mechanism displaces an opening / closing portion, which is an upper portion of the guide plate including the free end, between the closed position and the open position by deformation . The opening and closing mechanism is
An opening / closing camshaft having an opening / closing cam for pressing the opening / closing portion;
An opening / closing drive for rotating the opening / closing camshaft;
The apparatus for lowering a knitted fabric according to claim 1 . The capturing / lowering mechanism is
A capture member having a projection for capturing the knitted fabric;
A swing lever that moves the capture member up and down;
A lowering camshaft having a lowering cam that swings the swinging lever up and down;
A pulling drive section for rotating the pulling camshaft,
The knitted fabric is captured and pulled down by the capture member that moves up and down by rotating the pull-down camshaft in a specific direction,
The opening and closing drive unit is
A main pulley,
A driven pulley provided on the opening and closing camshaft and driven by rotation of the main driving pulley;
A one-way rotation mechanism that rotates the main pulley in accordance with the rotation of the pull-down camshaft in the direction opposite to the specific direction and does not interlock the main pulley with the rotation of the pull-down camshaft in the specific direction; The apparatus for lowering a knitted fabric according to claim 2 provided. By changing the position of the base portion with respect to the flat knitting machine, it is provided with an interval adjusting mechanism that adjusts the interval between the pair of base portions,
The interval adjusting mechanism is
A fixing bracket fixed to the flat knitting machine;
A movable bracket fixed to the base portion;
A shaft extending in a facing direction of the pair of base portions and connecting the fixed bracket and the movable bracket;
An adjustment member for a manufacturer that moves the shaft along its axial direction and changes the position of the movable bracket with respect to the fixed bracket together with the shaft;
An adjustment member for a user that moves the movable bracket along an axial direction of the shaft and changes a position of the movable bracket with respect to the fixed bracket;
The apparatus for lowering a knitted fabric according to any one of claims 1 to 3 , further comprising:

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