JP2013108184A - Flat-knitting machine with gauge shifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat-knitting machine comprising a gauge shifting device with a simple structure and a small size while reducing the cost, thereby downsizing the mounting space for a carriage.SOLUTION: A flat-knitting machine comprises: a first long trench 37 and a second long trench 38 that are disposed parallelly at a cam plate 21 so as to be positioned in parallel with a slope of a top cam 23; a control cam 44; and a stepping motor 48 for driving the control cam 44. The control cam 44 is configured to control the levels of a first gauge determination cam surface 35 and a second gauge determination cam surface 34 so as to be in the same level or a different level while moving a first cam 31 with a first gauge determination cam surface 35 being engaged with a second butt 14 at a full height in a direction of the first long trench 37, and moving a second cam 32 with a second gauge determination cam surface 34 being engaged with the second butt 14 at a half height in a direction of the second long trench 38.

Description

  The present invention relates to a flat knitting machine provided with a different degree device capable of forming stitches having different sizes in the same knitting course of a carriage.

  In this specification, with respect to the bat, the state where it does not receive the pressing action by the presser is the full height, the state where it is pressed by the presser and sunk approximately half is the half height, and the state where it receives the pressing by the presser is the zero height. Shall. For cams and pressers, the closer to the needle bed, the higher the cam surface height, the full-height cam can engage both half-height and full-height bat, and the half-height cam is full-height. It can only be engaged with the bat. In addition, the front side is preceded and the rear side is subsequent to the traveling direction of the carriage. Moreover, regarding the advancing / retreating direction of the knitting needle, the mouth side is the front and the opposite direction is the rear. Similarly, when representing each part of the cam, the front side of the cam indicates the side near the tooth opening, and the rear side indicates the side far from the tooth opening. Further, the height in the vertical direction means a height in a direction orthogonal to the drawing (paper surface).

  Conventionally, in order to form stitches having different sizes in the same knitting course formed by a single traverse of a carriage in a flat knitting machine, a different device has been used. For example, as shown in Japanese Patent Application Laid-Open No. H11-228707, the difference device includes a first cam and a second cam that move in parallel with the slope of the Tianshan cam provided on the cam plate. In addition, the first cam is provided with a first degree-determining cam surface for forming a large stitch that engages the full height bat, while the second cam has a small size that engages the half height bat. A second-degree cam surface for forming the stitch is provided. Then, the knitting yarn hook is pulled in by the hook of the knitting needle by the butt of the needle jack interlocked with the knitting needle body acting on the cam surface and being pulled backward, thereby forming a stitch. At this time, a step is generated between the first-degree determination cam surface and the second-degree determination cam surface, so that a small-size stitch and a large-size stitch can be formed on the same knitting course of the carriage.

Japanese Patent No. 4016031

  However, the conventional device requires a drive source for driving the first cam and a drive source for driving the second cam. In such a case, the difference device requires a first cam and a second cam for each of the left and right, and thus requires a total of four drive sources. This complicates the structure of the misalignment device and increases the cost. In addition, it is unavoidable to increase the size of the device, and a large mounting space is required for the carriage.

  An object of the present invention is to provide a flat knitting machine provided with a different degree device that can be reduced in size while reducing the cost while simplifying the structure and reducing the mounting space for the carriage.

  In order to achieve the above object, in the present invention, the height protruding from the needle bed by the pressing action of the press provided on the carriage moves in the moving direction parallel to the slope of the Tenzan cam provided on the cam plate is set to the full height. A first cam and a second cam that engage with a bat for advancing and retracting a knitting needle set to a height different from the half height are provided, and the first cam has a large size that engages with a full-height bat. The second cam is provided with a second-degree cam surface for forming a small-sized stitch that engages with a half-height bat. A flat knitting provided with a different degree device for forming a small sized stitch and a large sized stitch on the same knitting course of the carriage by causing a step between the first degree deciding cam surface and the second degree deciding cam surface. The machine is assumed. And a control cam that controls the first cam and the second cam to move in the moving direction so as to change the first degree cam surface and the second degree cam surface to be uniform or stepped. Drive means for driving the control cam in the rotational direction. A first cam sliding contact surface for moving the first cam in the moving direction by sliding contact with the control cam through the first sliding contact member and a second sliding contact through the second sliding contact member. And a second cam sliding contact surface for moving the cam in the moving direction. Further, the distance between the first cam sliding contact surface and the second cam sliding contact surface in the rotation direction of the control cam is varied in a plurality of steps or steplessly in the circumferential direction.

  Further, the control cam has the first cam sliding contact surface on the outer peripheral side and the second cam sliding contact surface on the inner peripheral side, and is slidably contacted in a substantially annular shape. And is supported rotatably around the axis of the control cam, and the distance between the axis and the first cam sliding contact surface and the second cam sliding contact surface is changed according to the rotation around the axis. Yes. One of the first and second slidable members is supported by the first cam, while the other slidable member is supported by the first cam so that the midway portion in the longitudinal direction is freely swingable. And one end may be supported by the other end of the arm supported by the second cam.

  Furthermore, a roller may be applied as the first and second sliding contact members.

According to the flat knitting machine provided with the crossing device according to the present invention, when the control cam is rotated by the driving means, the first cam and the second cam that are in sliding contact with the first sliding contact surface via the first sliding contact member. The second cam that is in sliding contact with the sliding contact surface via the second sliding contact member moves in parallel with the slope of the Tianshan cam, thereby changing the pull-down amount of the full-height and half-height bats. At this time, the cam surface is determined once according to the distance between the first cam sliding contact surface and the second cam sliding contact surface that are varied in a stepped or stepless manner in the circumferential direction in the rotation direction of the control cam. And the second-determining cam surface are changed to be uniform or stepped, and the stitch formed by the knitting needle of the full-height bat and the stitch formed by the knitting needle of the half-height bat It becomes possible to vary the size.
As a result, the difference device requires only two drive sources, and the structure of the difference device can be simplified and the cost can be reduced. In addition, it is possible to reduce the size of the device, and to reduce the mounting space for the carriage.

Further, when the control cam is rotated around the axis by the driving means, the distance between the sliding contact position of the sliding contact portion where the first and second sliding contact members are in sliding contact with the shaft changes, and according to the distance between the two. The first cam and the second cam move in parallel with the slope of the Tianshan cam, respectively, to change the pull-down amount of the full-height and half-height bats. At this time, the first degree cam surface and the second degree cam surface are changed to be uniform or stepped according to the distance between the first cam slide contact surface and the second cam slide contact surface. The sizes of the stitch formed by the knitting needles of the full height bat and the stitch formed by the knitting needles of the half height bat can be made different from each other.
Further, a full height and a half height are provided on the control cam rotating around the axis by projecting or recessing a sliding contact portion having a first degree determining cam surface and a second degree determining cam surface on the inner and outer peripheral sides. The bat pull-down amount can be changed and the first-degree determination cam surface and the second-degree determination cam surface can be changed with a simple configuration.
Moreover, by supporting the other sliding contact member on the first cam via the arm, the first cam and the other sliding contact member can be separated by the arm.

  Furthermore, by applying a roller as the sliding contact member, the sliding contact with respect to the first and second cam sliding contact surfaces can be performed smoothly and smoothly.

It is a side view of the knitting needle used for the flat knitting machine provided with the difference apparatus which concerns on embodiment of this invention. FIG. 5 is a bottom view of the cam unit viewed from the knitting needle side when the carriage travels to the left in the drawing. It is the bottom view which looked at one degree difference mountain cam of the difference apparatus of FIG. 1 from the knitting needle side. It is a bottom view of the state which removed each component of the difference degree mountain cam of FIG. 3 in order of (a)-(d) from the knitting needle side. It is sectional drawing in the AA line of the difference degree mountain cam of FIG. FIG. 4 is a right side view of the difference degree mountain cam of FIG. 3 viewed from the right side in the carriage traveling direction. FIG. 11 is a bottom view of one degree-of-difference mountain cam showing a transition state in which the amount of lowering the second butt is changed without causing a step amount. FIG. 10 is a bottom view of one degree-of-difference mountain cam showing a transition state in which a step amount S1 is generated to change the amount by which the second butt is pulled down.

  Next, a preferred embodiment of a flat knitting machine provided with the crossing device of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a side view of the knitting needle. The knitting needle 1 has a knitting needle body 11 integrated with a needle jack 12 at its tail. In the advance / retreat operation of the knitting needle 1, the first butt 13 and the second butt 14 projecting forward and backward with a predetermined interval of the needle jack 12 are engaged with a cam provided on the cam unit 2 (shown in FIG. 2). Is done.

  The arm 15 provided at the rear portion of the needle jack 12 urges the second butt 14 upward (on the cam unit 2 side) to project out of the needle groove. Then, after a needle is selected by a selector arranged in parallel below the needle bed by a needle selection actuator provided on a carriage (not shown), the select jack interlocked with the selector is moved to two different positions. Due to these positional relationships, a presser can act on the butt of the select jack to set a half-height bat, and a full-height bat can be set without the presser acting. Note that the first butt 13 provided in the vicinity of the connecting portion with the knitting needle body 11 always maintains a position protruding out of the needle groove regardless of the pressing action of the presser.

  FIG. 2 is a bottom view of the cam unit 2 as viewed from the knitting needle 1 side when the carriage travels to the left in the drawing. In FIG. 2, the cam unit 2 is disposed on the carriage and is provided symmetrically about the center line X of the cam plate 21. The cam unit 2 has a needle raising cam 22 disposed in the center of the cam plate 21, a Tianshan cam 23 in front of it (advancing and retracting direction of the knitting needle 1), and a path of the second butt 14 of the needle jack 12 on both the left and right sides thereof. 24, the degree cams 25a and 25b of the degree device 25 are provided. The degree cams 25a and 25b are configured to be movable back and forth in a direction substantially parallel to the slope of the Tianshan cam 23. Reference numeral 26 denotes a transfer receiving cam provided inside the needle raising cam 22. A transfer cam 28 is provided in front of the Tianshan cam 23. The transfer cam 28 includes a transfer cam 28a and a transfer guide cam 28b.

  3 is a bottom view of one of the degree difference cams 25a of the difference degree device 25 of FIG. 2 as viewed from below (knitting needle 1 side), and FIG. 4 is a diagram showing the components of the degree difference degree cam 25a of FIG. The bottom view of the state remove | eliminated in order of (a)-(d) from is shown. 4A shows the first cam and the second cam on the cam plate 21, and FIG. 4B shows the first press plate and the second press plate with the first cam and the second cam removed. Show. Further, (c) shows the arm with the first presser plate and the second presser plate removed, and (d) shows the control cam and the stepping motor with the arm removed. 5 is a cross-sectional view taken along the line AA of FIG. 3, and FIG. 6 is a right side view of the degree-of-difference mountain cam 25a of FIG.

  Since the degree cams 25a and 25b have the same configuration, only one degree cam 25a will be described. The difference degree mountain cam 25 a includes a first cam 31, a second cam 32, and an arm 33. The first cam 31 is formed with a first-determining cam surface 35 that engages with the full-height second butt 14 to form a stitch larger than the knitting needle 1 of the half-height second bat 14. . On the other hand, the second cam 32 is formed with a second-degree determining cam surface 34 that engages with the second butt 14 having a half height.

  The cam plate 21 has a first long groove 37 and a second long groove 38 that are parallel to the slope of the Tianshan cam 23. Support blocks 37a and 38a (shown in FIG. 5) are slidably disposed in the first long groove 37 and the second long groove 38. The support block 37a of the first long groove 37 is interposed between the first cam 31 and the first pressing plate 41 that slidably supports the first cam 31 from the back side of the cam plate 21. The first cam 31 can be moved along the first long groove 37. On the other hand, the support block 38 a of the second long groove 38 is interposed between the second cam 32 and a second presser plate 42 that slidably supports the second cam 32 from the back side of the cam plate 21. The second cam 32 is movable along the second long groove 38.

  In the arm 33, a substantially intermediate portion in the longitudinal direction is rotatably supported by a shaft 43 that protrudes upward from the front right end position of the first presser plate 41. A roller 49 is supported at one end of the arm 33 (the right end in FIGS. 3 and 4), and the roller 49 is accommodated in a recess 42 a provided at the front end of the second presser plate 42 so as to be movable in the left-right direction.

  Further, the difference degree mountain cam 25 a includes a control cam 44 on the back side (upper side) of the arm 33. The control cam 44 includes a substantially ring-shaped sliding contact portion 46 protruding downward from the peripheral edge of the circular plate 45 (arm 33 side), and a boss portion 47 serving as a shaft protruding upward from the plate 45. It has. The slidable contact portion 46 has two kinds of radial thicknesses that are different from each other in the circumferential direction with a reference position in the circumferential direction (a position sandwiched between inner and outer rollers 51 and 52 described later in FIG. 3) as a boundary. It has the 1st and 2nd thickness parts 46a and 46b, and the thickness of the 2nd thickness part 46b is larger than the thickness of the 1st thickness part 46a. At the center of the boss portion 47, for example, an output shaft 48a of a stepping motor 48 that can rotate in the forward and reverse directions as a drive means is fitted and inserted. The driving means is not limited to the stepping motor 48, and may be another motor such as a servo motor.

  The first and second thickness portions 46a, 46b of the sliding contact portion 46 are sandwiched by a pair of inner and outer rollers 51, 52 as first and second sliding contact members from the inner and outer directions. The outer roller 52 slidably in contact with the outer peripheral sides of the first and second thickness portions 46 a and 46 b is rotatably supported by the front end portion of the first pressing plate 41. On the other hand, the inner roller 51 slidably in contact with the inner peripheral side of the first and second thickness portions 46a and 46b is rotatably supported on the other end of the arm 33 (the left end in FIGS. 3 and 4). Further, the plate 45 is provided with a detection piece 45 a for detecting the reference position of the sliding contact portion 46 by the sensor 50.

  And the thickness of the 2nd thickness part 46b is formed largely by reducing the diameter of the inner peripheral side of the sliding contact part 46 with respect to the 1st thickness part 46a. For this reason, in the second thickness portion 46b, the distance between the inner roller 51 and the outer roller 52 is increased because the second thickness portion 46b is thicker than the first thickness portion 46a.

  A hook 53 is fixed to the position of the rear right end of the first presser plate 41. Between the hook 53 and one end of the arm 33, a pair of inner and outer rollers 51, 52 are connected to the first and second thickness portions 46a. , 46b is provided on the inner and outer peripheral sides. At this time, the inner roller 51 is pressed to the inner peripheral side of the first and second thickness portions 46a and 46b via the arm 33 by the biasing force of the biasing spring 54, and the first presser that receives the reaction force. The outer roller 52 is pressed to the outer peripheral side of the first and second thickness portions 46a and 46b by the pulling force of the plate 41 to the rear. Further, the outer peripheral side of the sliding contact portion 46 is configured as a first cam sliding contact surface 462 that moves the first cam 31 along the first long groove 37 by sliding contact via the outer roller 52. The inner peripheral side is configured as a second cam sliding contact surface 461 that moves the second cam 32 along the second long groove 38 by sliding contact via the inner roller 51 and the arm 33. As a result, the inner and outer rollers 51 and 52 of the pair follow in close contact according to the thicknesses of the two types of first and second thickness portions 46a and 46b, and the pinching error between the inner and outer rollers 51 and 52 is eliminated. The first-degree determining cam surface 35 and the second-degree determining cam surface 34 can be reliably held in a uniform state or a stepped state. Moreover, the first and second cam slides are brought into sliding contact with the first and second cam sliding contact surfaces 462 and the second cam sliding contact surfaces 461 of the first and second thickness portions 46a and 46b. The sliding contact with respect to the contact surfaces 462 and 461 can be performed smoothly and smoothly.

Next, the actual operation by the degree difference mountain cam 25a will be described.
FIG. 7 shows a bottom view of one degree-of-difference mountain cam 25a showing a transition state in which the amount of lowering of the second butt 14 is changed without causing a step amount.

  When the stepping motor 48 is rotated forward from the reference position shown in FIG. 7A (the right rotation in FIG. 7A), the first thickness portion 46a is moved inward as shown in FIG. 7B. The control cam 44 rotates in the same manner in the state of being sandwiched between the outer rollers 51 and 52 (in the right direction of FIG. 7B). Accordingly, the distance between the first thickness portion 46 a between the inner and outer rollers 51 and 52 and the center of the boss portion 47 gradually decreases, the first cam 31 moves backward, and the second cam 32 passes through the arm 33. As a result, the second bat 14 is retracted to 2 mm. At this time, the thickness in the radial direction of the first thickness portion 46 a is determined by the first degree cam surface 35 of the first cam 31 and the second degree of the second cam 32 when sandwiched between the inner and outer rollers 51 and 52. The cam surface 34 is set to be uniform without any step.

  Next, the stepping motor 48 is further rotated forward from the position shown in FIG. 7B, and as shown in FIGS. 7C and 7D, the first thickness portion 46a is moved to the inner and outer rollers 51, 52. Similarly, the control cam 44 is rotated in the forward direction in a state of being sandwiched by. Then, the distance between the first thickness portion 46a between the inner and outer rollers 51 and 52 and the center of the boss portion 47 is further gradually reduced, and the first cam 31 and the second cam 32 are moved backward, as shown in FIG. ), The lowering amount of the second butt 14 is changed to 4 mm, and in FIG. 7D, the inner and outer rollers 51, 52 are positioned at the terminal positions of the first thickness portion 46a, and the lowering amount of the second bat 14 is decreased. Changed to 6 mm.

  FIG. 8 shows a bottom view of one degree-of-difference mountain cam 25a showing a transition state in which the step amount S1 is generated and the amount by which the second butt 14 is lowered is changed.

  As shown in FIG. 8A, the stepping motor 48 is reversely rotated from the reference position (the left rotation in FIG. 8A) to the first cam sliding contact surface 462 of the second thickness portion 46b and the second The cam sliding contact surface 461 is clamped from inside and outside by the inner and outer rollers 51 and 52. At this time, the inner roller 51 is pulled backward by the second thickness portion 46b which is thicker than the first thickness portion 46a due to the reduced diameter on the inner peripheral side. For this reason, the second cam 32 moves forward of the first cam 31 via the arm 33 and the second presser plate 42, and the first degree determination cam surface 35 of the first cam 31 and the second cam 32 of the second cam 32 are moved. A step amount S1 is generated between the degree-determining cam surface 34 and the cam surface 34. This makes it possible to make the sizes of the stitch formed by the knitting needle 1 of the full-height second bat 14 different from the size of the stitch formed by the knitting needle 1 of the second bat 14 of half height. .

  Next, as shown in FIG. 8B, the stepping motor 48 is further reversely rotated to similarly reversely rotate the control cam 44. Accordingly, the distance between the second thickness portion 46 b between the inner and outer rollers 51 and 52 and the center of the boss portion 47 gradually decreases, the first cam 31 moves backward, and the second cam 32 passes through the arm 33. The second butt 14 is lowered to 2 mm while the step amount S1 is generated between the first degree determination cam surface 35 and the second degree determination cam surface 34.

  Thereafter, the stepping motor 48 is further rotated in the reverse direction from the position shown in FIG. 8B, and the second thickness portion 46b is moved to the inner and outer rollers 51, 52 as shown in FIGS. 8C and 8D. The control cam 44 is rotated counterclockwise in a state where it is clamped by. Then, the distance between the second thickness portion 46b between the inner and outer rollers 51 and 52 and the center of the boss portion 47 is further gradually reduced, and the step amount S1 is generated between the determining cam surfaces 35 and 34. The first cam 31 and the second cam 32 move backward. At this time, the lowering amount of the second bat 14 is changed to 4 mm in FIG. 8C, and the inner and outer rollers 51 and 52 are positioned at the end positions of the second thickness portion 46b in FIG. 8D. The amount by which the second bat 14 is lowered is changed to 6 mm.

  As described above, as the control cam 44 rotates, the pull-down amount of the second bat 14 having the full height and the half height is changed, and the first degree cam surface 35 and the second degree cam surface 34 are changed. A step amount S1 is generated. Thereby, in the difference device 25, the left and right difference degree mountain cams 25a and 25b each need only two stepping motors 48, so that the structure of the difference device 25 can be simplified and the cost can be reduced. Can be achieved. Moreover, it is possible to reduce the size of the misalignment device 25 and to reduce the mounting space for the carriage.

  Further, by providing the control cam 44 rotating around the boss portion 47 of the plate 45 with the sliding contact portion 46 having the first and second cam sliding contact surfaces 462 and 461 on the inner and outer peripheral sides, the full height and the half height. The change in the amount by which the second butt 14 is lowered and the change in the step amount between the first-degree determination cam surface 35 and the second-degree determination cam surface 34 can be performed with a simple configuration. Moreover, by supporting the inner roller 51 on the second pressing plate 42 (second cam 32) via the arm 33, the second cam 32 and the inner roller 51 can be separated by the arm 33.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and can be implemented without departing from the gist of the present invention. For example, in the present embodiment, the substantially annular sliding contact portion 46 is protruded downward on the plate 45 of the control cam 44, but the substantially annular sliding contact portion is recessed upward on the plate. A first cam sliding contact surface may be provided on the outer peripheral side of the sliding contact portion, and a second cam sliding contact surface may be provided on the inner peripheral side. In this case, the inner and outer rollers are accommodated in the sliding contact portions of the grooves provided in the plate, respectively.

  In the embodiment, the inner and outer rollers 51 and 52 are slidably contacted with the first and second cam sliding contact surfaces 462 and 461 of the first and second thickness portions 46a and 46b by the biasing force of the biasing spring 54. The inner peripheral side of the projecting sliding contact portion so that the inner and outer rollers are slidably contacted along the first cam sliding contact surface and the second cam sliding contact surface of the first and second thickness portions, respectively. The inner and outer grooves that guide the inner and outer rollers may be configured by walls that are recessed along the outer periphery. In addition, a substantially annular sliding contact portion is recessed on each of the upper and lower surfaces of the plate, and a first cam sliding contact surface is provided on one of the inner peripheral side and the outer peripheral side of the groove of the sliding contact portion provided on the upper surface thereof. A second cam sliding contact surface may be provided on the other of the inner peripheral side and the outer peripheral side of the groove of the sliding contact portion provided in the lower surface. At this time, as the control cam rotates, the inner and outer rollers roll on the second cam sliding contact surface on the inner circumferential groove side and the first cam sliding contact surface on the outer circumferential groove side, respectively. In these cases, an urging spring that presses the inner and outer rollers against the first cam sliding contact surface and the second cam sliding contact surface of the first and second thickness portions is not required, and the structure of the degree cam It is possible to further simplify and reduce the cost.

  In the above-described embodiment, the step amount S1 is generated or not generated by the two types of first and second thickness portions 46a and 46b having different thicknesses. May be generated. In addition, the sliding contact portion has three or more kinds of thickness portions in which the radial thickness is varied in three steps or more in the circumferential direction, and a thickness portion in which the radial thickness is varied infinitely in the circumferential direction. Also good.

  Further, in the above embodiment, the inner and outer rollers 51 and 52 are slidably contacted with the first cam slidable contact surface 462 and the second cam slidable contact surface 461 of the first and second thickness portions 46a and 46b of the slidable contact portion 46, respectively. However, instead of the inner and outer rollers, a slidable contact member such as a cylinder or a sphere that does not rotate around the axis may be slidably contacted with the first and second cam slidable contact surfaces.

14 Second butt 21 Cam plate 23 Tianshan cam 25 Degree difference device 25a, 25b Degree difference mountain cam 31 First cam 32 Second cam 33 Arm 34 Second degree determining cam surface 35 First degree determining cam surface 44 Control cam 46 Slide contact portion 461 Second cam slide contact surface 462 First cam slide contact surface 47 Shaft 48 Stepping motor 51 Inner roller 52 Outer roller

Claims (3)

Move in the direction parallel to the slope of the Tianshan cam provided on the cam plate, and set the height protruding from the needle bed by the pressing action of the press provided on the carriage to a different height between full height and half height A first cam and a second cam for engaging a bat for advancing / retreating a knitting needle, and a first cam for forming a large stitch that engages a full-height bat on the first cam. The second cam is provided with a second-degree determination cam surface for forming a small stitch that engages with the half-height bat, and the first-degree determination cam surface and the second cam In a flat knitting machine equipped with a different degree device for forming a small stitch and a large stitch on the same knitting course of the carriage by generating a step on the camming surface,
A control cam that controls the first cam and the second cam to move in the moving direction so that the first degree cam surface and the second degree cam surface are changed uniformly or stepwise;
Drive means for driving the control cam in the rotational direction;
With
The control cam moves the first cam in the moving direction by sliding contact via the first sliding contact member and the second cam by sliding contact via the second sliding contact member. A second cam sliding contact surface that moves in the moving direction,
The distance between the first cam sliding contact surface and the second cam sliding contact surface in the rotation direction of the control cam is varied in a plurality of steps or steplessly in the circumferential direction. Flat knitting machine with a difference device. The control cam has a sliding contact portion that has the first cam sliding contact surface on the outer peripheral side and the second cam sliding contact surface on the inner peripheral side and is projected or recessed in a substantially annular shape. Provided, and is rotatably supported around the axis of the control cam, and the distance between the axis and the first cam sliding contact surface and the second cam sliding contact surface is changed according to the rotation around the axis.
One of the first and second slidable contact members is supported by the first cam, while the other slidable member is swingable in the longitudinal intermediate portion of the first cam. The flat knitting machine provided with the crossing device according to claim 1, wherein the flat knitting machine is supported by the other end of the arm supported by the second cam.   The flat knitting machine provided with the difference apparatus of Claim 1 or Claim 2 to which the roller is applied as said 1st and 2nd sliding contact member.

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