JP6091165B2 - Flat knitting machine with movable sinker - Google Patents

Description

  The present invention relates to a flat knitting machine including a movable sinker that is movable at the tip of a needle bed that is disposed to face at least a pair of front and rear.

  As a movable sinker, for example, the one shown in Patent Document 1 is known. The movable sinker is housed in a stepped portion that is recessed on one side in the thickness direction of the needle plate that is erected on the needle bed, and the swing support portion provided in the stepped portion allows the movable sinker to be attached to the mouth of the needle bed. On the other hand, it is supported so as to be able to swing forward and backward. The swing support portion is provided at the sinker side support portion having an arc-shaped peripheral surface projecting downward from the lower end of the movable sinker in the step portion, and at the lower end of the step portion facing the peripheral surface of the sinker side support portion. And a needle plate side support portion having an arcuate guide surface that guides the peripheral surface of the sinker side support portion when the movable sinker swings. Further, the movable sinker has a support plate and a spacer laminated only on one side in the thickness direction on the upper side in order to avoid interference with the knitting needle that moves back and forth on one side in the thickness direction on the lower side. And only the upper side is supported by the spacer from one side in the thickness direction.

Japanese Patent No. 2700204

By the way, the movable sinker accommodated in the step portion of the needle plate may fall down in the thickness direction. This is because the movable sinker is housed in a step on one side in the thickness direction of the needle plate, and the upper side is supported from one side in the thickness direction by a support plate, a spacer, etc., but the sinker side projects downward This is because there is no member that supports the support portion from one side in the thickness direction.
When the movable sinker falls in the thickness direction, the following problems occur.

The friction between the peripheral surface of the sinker side support part and the guide surface of the needle plate side support part and the friction between the guide groove at the tip of the needle bed that guides the tip of the movable sinker is increased. The peripheral surface of the side support part and the guide surface of the needle plate side support part are worn out, and the tip part of the movable sinker is worn out.
In addition, when the movable sinker is assembled to the needle bed, the movable sinker is in an unstable state in which the movable sinker easily falls over until the support plate and spacer are stacked after the movable sinker is mounted on the stepped portion. The wire spring urging in the advancing direction is also easily detached.
In addition, if the movable sinker is in an unstable state that easily falls, it may easily interfere with the movable sinker when the knitting needle is attached to or detached from the needle bed, and the movable sinker may come off or the movable sinker or knitting needle may be damaged.

  An object of the present invention is to provide a movable sinker that can surely prevent the falling of the movable sinker due to the shift of the sinker side support portion to one side in the thickness direction and prevent the occurrence of problems due to the falling of the movable sinker. Is to provide a flat knitting machine.

  In order to achieve the above object, the present invention is premised on a flat knitting machine including a movable sinker that is movable at the tip of a needle bed that is disposed to face at least a pair of front and rear. Furthermore, a step portion for accommodating the movable sinker is recessed in one side in the thickness direction of the needle plate erected on each needle bed, and the movable sinker is provided in the step of the needle bed in the step portion. On the other hand, there is provided a swinging support portion that supports swinging forward and backward. The swing support portion is provided on the movable sinker and provided on the sinker side support portion having an arcuate peripheral surface and the stepped portion facing the peripheral surface of the sinker side support portion, and the movable sinker A needle plate side support portion having an arcuate guide surface for guiding the peripheral surface of the sinker side support portion when the sinker swings; and a needle plate side support portion on one side in the thickness direction of the sinker side support portion. And a support wall that supports the sinker side support portion, the surface of which is guided, from one side in the thickness direction of the needle plate.

  Moreover, the said support wall may be provided in the said needle plate side support part.

  On the other hand, the said support wall may be provided in the auxiliary | assistant plate laminated | stacked from the thickness direction one side with respect to the said needle plate side support part.

  Moreover, it is preferable that the said support wall protrudes in the radial inside of a circular arc from the guide surface of the said needle plate side support part, and the protrusion amount reduces as it approaches the upper end of the said guide surface.

  It is preferable that a discharge portion that discharges the yarn waste from the swing support portion to one side in the thickness direction of the needle plate side support portion is provided on the support wall.

  By providing the support wall for supporting the sinker side support portion from one side in the thickness direction of the needle plate on the one side in the thickness direction of the needle plate side support portion, the sinker side support portion does not shift to one side in the thickness direction. As a result, the movable sinker can be reliably prevented from falling in the thickness direction, and the occurrence of problems due to the falling of the movable sinker can be prevented.

  Further, by providing a support wall on the needle plate side support portion, the movable sinker is supported from one side in the thickness direction only by assembling the sinker side support portion to the needle plate side support portion, and the movable sinker can be moved without increasing the number of parts. Can be reliably prevented from falling in the thickness direction.

  On the other hand, by providing a support wall on the auxiliary plate laminated from one side in the thickness direction with respect to the needle plate side support portion, it is possible to reliably prevent the movable sinker from collapsing in the thickness direction using the auxiliary plate.

  Further, the sinker side support part is moved to one side in the thickness direction by reducing the protrusion amount of the support wall protruding radially inward of the arc from the guide surface of the needle plate side support part as it approaches the upper end of the guide surface. When inserted into the needle plate side support portion and assembled in an inclined state, interference with the support wall can be easily avoided.

  Furthermore, by providing a discharge portion on the support wall for discharging the yarn waste from the swing support portion to one side in the thickness direction of the needle plate side support portion, the waste portion from the swing support portion can be removed without being accumulated. It can be discharged smoothly.

It is a vertical side view in the state where the sinker plate was laminated in the thickness direction of the needle plate in the vicinity of the mouth of one needle bed of the flat knitting machine according to the first embodiment of the present invention. It is a vertical side view in the state which laminated | stacked the support plate and the spacer in the thickness direction of the sinker plate and needle plate of FIG. 1, and assembled | attached the knitting needle. It is a disassembled side view which shows the state which decomposed | disassembled each component requirements except the knitting needle of FIG. It is sectional drawing in the AA of FIG. It is a vertical side view in the state which laminated | stacked each component in the thickness direction of the needle plate in the needle | hook vicinity of one needle bed of the flat knitting machine which concerns on Example 2 of this invention. It is a decomposition | disassembly side view which shows the state which decomposed | disassembled each component of FIG. It is sectional drawing in the BB line of FIG. It is a vertical side view in the state which laminated | stacked each component in the thickness direction of the needle plate in the needle | hook vicinity of one needle bed of the flat knitting machine which concerns on Example 3 of this invention. It is sectional drawing in CC line of FIG. It is a vertical side view in the state which laminated | stacked each component in the thickness direction of the needle plate in the needle | hook vicinity of one needle bed of the flat knitting machine which concerns on Example 4 of this invention. It is a vertical side view in the state which laminated | stacked each component in the thickness direction of a needle plate in the vicinity of the mouth of one needle bed of the flat knitting machine concerning Example 5 of this invention. It is a decomposition | disassembly side view which shows the state which decomposed | disassembled each component of FIG. It is sectional drawing in the DD line | wire of FIG.

  Hereinafter, embodiments of the present invention will be described as Examples 1 to 5. Moreover, in Example 2-5, the figure and description of the part which overlaps with Example 1 are abbreviate | omitted.

  FIG. 1 is a longitudinal side view showing a state in which a sinker plate is laminated in the thickness direction of a needle plate in the vicinity of the mouth of one needle bed of a flat knitting machine according to Embodiment 1 of the present invention, and FIG. FIG. 3 is an exploded side view showing a state in which each constituent element except for the knitting needle is disassembled, and FIG. 4 is an A- Cross-sectional views along line A are shown.

  1 to 4, the flat knitting machine 1 includes front and back needle beds 11 (only one is shown in FIG. 1) opposed to each other in an inverted V shape across the tooth opening 10. A carriage (not shown) is provided on each needle bed 11. Each carriage is driven by a motor (not shown), and reciprocates in the longitudinal direction of the needle bed 11 (the front and back in the drawing in FIG. 1).

  The needle bed 11 is provided with a needle plate groove 12 arranged in parallel in the longitudinal direction. The lower part of the needle plate 13 is embedded in each needle plate groove 12. A dovetail engagement groove 14 is formed at the upper end of the front end portion of each needle plate 13. Further, between the needle plates 13 and 13 adjacent to each other, a Bella type knitting needle 16 having an elastic guide piece 15 for transferring to the side surface is juxtaposed in a retractable manner. Each knitting needle 16 is operated to be withdrawn and retracted by a cam provided on the carriage.

  In addition, a movable sinker 20 is stacked at the tip of the needle bed 11 along one side in the thickness direction of each needle plate 13 (left side in FIG. 4). A guide groove 21 is provided for guiding forward and backward swinging. Each movable sinker 20 includes a sinker plate 22 formed of a thin plate, and a knitting yarn holding portion 23 that receives a knitting yarn is formed at the tip of the sinker plate 22. In addition, a spring locking portion 25 that locks one end of a substantially U-shaped wire spring 24 that presses down and biases the knitting yarn holding portion 23 is formed at a base portion behind the knitting yarn holding portion 23.

  A concave step portion 30 cut by the thickness of the sinker plate 22 is provided on one side in the thickness direction of the portion near the tip of each needle plate 13, and the base portion of the sinker plate 22 is accommodated in the step portion 30. Yes. A swing support portion 31 that supports the sinker plate 22 so as to be able to move back and forth is provided in the stepped portion 30. The swing support portion 31 includes a sinker side support portion 33 in which a substantially semicircular arc-shaped peripheral surface 32 protrudes downward from the lower end of the spring locking portion 25 of the sinker plate 22, and the sinker side support portion 33. A needle plate side having a semicircular arc-shaped guide surface 34 that is recessed downward from the lower end of the step portion 30 that faces the peripheral surface 32 and guides the peripheral surface 32 of the sinker-side support portion 33 when the sinker plate 22 swings. And a support portion 35. In addition, the needle plate side support portion 35 is provided with a through hole 36 that penetrates to the other side in the thickness direction of the needle plate 13.

  A support plate 40 is laminated on one side in the thickness direction of the sinker plate 22. The support plate 40 is formed of a thin steel plate and includes a knitting yarn fall prevention portion 41 that protrudes downward at the front end. The rear end portion of the support plate 40 is provided with a fitting recess 43 that fits into the pivot pivot rod 42 supported over each needle plate 13. A dovetail engaging groove 44 is formed at the upper end of the substantially central portion of the support plate 40.

  Further, a spacer 46 having an engagement groove 45 at the upper end is laminated on one side in the thickness direction of the support plate 40. The rear end portion of the spacer 46 is provided with a fitting recess 47 that fits into the rotating pivot rod 42. A needle groove 48 is provided below the spacer 46, and the knitting needle 16 is accommodated in the needle groove 48. Further, a pressing plate 49 is inserted into the engagement grooves 14, 44, 45 of the needle plate 13, the support plate 40, and the spacer 46, whereby the support plate 40 and the spacer 46 are fixed to the needle plate 13, and at the same time. Since the free end portion of the wire spring 24 is pressed and biased by the peripheral surface of the upper end of the stepped portion 30, the knitting yarn holding portion 23 at the tip of the sinker plate 22 is always pressed and biased downward. The sinker plate 22 is moved back and forth by a cam provided on the carriage.

  Then, the swing support portion 31 supports a support wall 50 that supports the peripheral edge of the sinker side support portion 33 whose peripheral surface 32 is guided by the guide surface 34 of the needle plate side support portion 35 from one side in the thickness direction of the needle plate 13. I have. The support wall 50 is provided integrally with the needle plate side support portion 35 and has an arc shape in which the center is moved slightly above the center of the arc of the guide surface 34 with substantially the same curvature as the guide surface 34. The amount of protrusion that protrudes inward in the radial direction of the arc from the guide surface 34 decreases as it approaches the upper end of the guide surface 34. For this reason, the sinker side support portion 33 can be easily inserted by being able to easily avoid interference with the support wall 50 when being inserted and assembled into the needle plate side support portion 35 in a state inclined to one side in the thickness direction. The peripheral edge is supported from one side in the thickness direction by the support wall 50 simply by inserting. Thereby, the sinker side support part 33 does not shift to one side in the thickness direction without increasing the number of parts, and the sinker plate 22 can be reliably prevented from falling in the thickness direction.

  Therefore, it is possible to prevent wear of the peripheral surface 32 of the sinker side support portion 33 and the guide surface 34 of the needle plate side support portion 35 and wear of the tip portion of the sinker plate 22. The disconnection of the wire spring 24 can also be prevented. Further, when the knitting needle 16 is attached to and detached from the needle bed 11, the sinker plate 22 is not interfered, and the detachment of the sinker plate 22 and the damage of the knitting needle 16 and the sinker plate 22 can be reliably prevented.

In the present embodiment, the support wall 50 having an arc shape in which the center is moved slightly above the center of the arc of the guide surface 34 with substantially the same curvature as the guide surface 34 is provided on one side in the thickness direction of the guide surface 34. Although it protruded from the end, it may be a plurality of support walls protruding intermittently in the circumferential direction of the guide surface 34 from one end in the thickness direction of the guide surface 34. In short, it is only necessary that the support wall protrudes radially inward of the arc so that the sinker side support portion 33 can be inserted into the needle plate side support portion 35.
Further, although the support wall 50 is provided integrally with the needle plate side support portion 35, the support wall 50 may be provided separately from the needle plate side support portion 35.

Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a longitudinal side view in the state where the respective constituent elements are stacked in the vicinity of the mouth of one needle bed of the flat knitting machine according to the second embodiment of the present invention, and FIG. 6 is an exploded view showing a state in which the respective constituent elements are disassembled. FIG. 7 is a side view, and FIG. 7 is a sectional view taken along line BB in FIG. In the present embodiment, only the configuration of the needle plate will be described.

  That is, as shown in FIGS. 5 to 7, the needle plate 60 includes a main needle plate 61 and an auxiliary plate 62 stacked in the thickness direction. The auxiliary plate 62 has substantially the same shape as the main needle plate 61, and is laminated only on one side in the thickness direction of the lower portion of the tip portion of the main needle plate 61, and the thickness of the upper portion at the tip portion of the main needle plate 61. Interference with the support plate 40 and the spacer 46 stacked on one side in the direction is avoided.

  Further, a step portion 30 is provided on one side surface in the thickness direction of the portion near the tip of the main needle plate 61. A support wall 50 is integrally provided on the auxiliary plate 62 laminated from one side in the thickness direction with respect to the needle plate side support portion 35 of the step portion 30. Thereby, the effect similar to Example 1 can be acquired using the auxiliary | assistant plate 62. FIG.

Next, Embodiment 3 of the present invention will be described with reference to FIGS.
FIG. 8 is a longitudinal side view in the state in which the constituent elements are laminated in the thickness direction of the needle plate in the vicinity of the mouth of one needle bed of the flat knitting machine according to the third embodiment of the present invention, and FIG. Sectional views taken along the line -C are shown. In the present embodiment, only the configuration of the support wall will be described.

That is, as shown in FIGS. 8 and 9, the support wall 64 is provided integrally with the auxiliary plate 62. The support walls 64 are provided on both the left and right sides of the central discharge portion 65 as viewed from one side in the thickness direction. Each support wall 64 has an arc shape in which the center is moved slightly above the center of the arc of the guide surface 34 with substantially the same curvature as the guide surface 34, and the radial direction of the arc from the guide surface 34 The amount of protrusion protruding inward decreases as it approaches the upper end of the guide surface 34. For this reason, the sinker-side support portion 33 can be easily inserted because it can easily avoid interference with the support wall 64 when inserted into the needle plate-side support portion 35 and assembled. Supported from one direction. Thereby, the same effect as Example 1 can be acquired.
Further, the discharge portion 65 is cut out in a substantially arc shape along the lower end of the guide surface 34 of the needle plate side support portion 35, so that the yarn waste from the swing support portion 31 can be discharged.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 10: has shown the vertical side view in the state which laminated | stacked each component in the thickness direction of the needle plate in the vicinity of the mouth of one needle bed of the flat knitting machine according to Embodiment 4 of the present invention. In the present embodiment, only the configuration of the support wall will be described.

  That is, as shown in FIG. 10, the support wall 71 is provided integrally with the auxiliary plate 62. The support wall 71 has an arc shape in which the center is moved slightly above the center of the arc of the guide surface 34 with substantially the same curvature as the guide surface 34 of the needle plate side support portion 35. The amount of protrusion that protrudes inward in the radial direction of the arc also decreases as it approaches the upper end of the guide surface 34. For this reason, the sinker side support portion 33 can be easily inserted by being able to easily avoid interference with the support wall 71 when inserted into the needle plate side support portion 35 and assembled. Supported from one direction. Thereby, the same effect as Example 1 can be acquired.

  In addition, a discharge portion 72 that is notched in the shape of a long hole in accordance with the curvature of the guide surface 34 is provided at a position below the central portion of the support wall 71 when viewed from one side in the thickness direction of the support wall 71. The waste yarn can be discharged from the swing support portion 31 via the discharge portion 72.

Next, a fifth embodiment of the present invention will be described with reference to FIGS.
FIG. 11 is a longitudinal side view in the state in which the constituent elements are laminated in the thickness direction of the needle plate in the vicinity of the mouth of one needle bed of the flat knitting machine according to the fifth embodiment of the present invention, and FIG. The exploded side view which shows the state which decomposed | disassembled the component requirements, FIG. 13 has shown sectional drawing in the DD line | wire of FIG. In the present embodiment, only the configuration of the swing support portion will be described.

  That is, as shown in FIGS. 11 to 13, the swing support portion 73 is a sinker side support in which a semicircular arc-shaped circumferential surface 74 is recessed upward from the rear lower end of the spring locking portion 25 of the sinker plate 22. A semicircle projecting upward from the lower end of the step portion 30 facing the portion 75 and the peripheral surface 74 of the sinker side support portion 75 and guiding the peripheral surface 74 of the sinker side support portion 75 when the sinker plate 22 swings And a needle plate side support portion 77 having an arcuate guide surface 76.

  Further, a support wall 78 that integrally supports the peripheral edge of the sinker side support portion 75 from one side in the thickness direction of the main needle plate 61 is integrally provided at the distal end portion of the auxiliary plate 62. In this support wall 78, the sinker side support portion 75 and the needle plate side support portion 77 constitute a swing support portion 73. The support wall 78 has a substantially arc shape covering the periphery of the sinker side support portion 75 from the one side in the thickness direction over the entire circumferential direction thereof, and the radial direction of the arc is larger than the guide surface 76 of the needle plate side support portion 77. It protrudes outward. For this reason, just by inserting the sinker side support portion 75 into the needle plate side support portion 77, the peripheral edge is supported by the support wall 78 from one side in the thickness direction. Thereby, the same effect as Example 1 can be acquired.

  In the fifth embodiment, a substantially arc-shaped support wall 78 is provided to cover the periphery of the sinker side support portion 75 from one side in the thickness direction over the entire circumferential direction, but the periphery of the sinker side support portion 75 is A plurality of support walls covering intermittently in the circumferential direction from one side in the thickness direction may be used.

  Further, in the first embodiment, the support wall 50 provided integrally with the needle plate side support portion 35 has a curvature substantially the same as that of the guide surface 34 of the needle plate side support portion 35 and is larger than the center of the arc of the guide surface 34. Although the center is moved slightly upward, the support plate has the same shape as the support walls 64, 71, 78 of the auxiliary plate 62 used in Examples 3 to 5 at the needle plate side support portion. It goes without saying that it may be done. Needless to say, in the second to fifth embodiments, the support walls 50, 64, 71, 78 may be provided separately from the auxiliary plate 62.

  In each of the above embodiments, each support wall 50, 64, 71, 78 has an arc shape with substantially the same curvature as the guide surface 34, but each support wall 50, 64, 71, 78 is connected to the guide surface 34. May have an arc shape with a different curvature or a linear shape, and the shape is not limited as long as the periphery of the sinker side support portion can be supported from one side in the thickness direction. Further, the support walls 50 and 78 may also be provided with a discharge portion for discharging the yarn waste.

  Further, in each of the above embodiments, the support plate 40 is laminated, but only the spacer 46 may be laminated.

DESCRIPTION OF SYMBOLS 1 Flat knitting machine 10 Tooth mouth 11 Needle bed 12, 60 Needle plate 20 Movable sinker 30 Step part 31, 73 Swing support part 32, 74 Circumferential surface 33, 75 Sinker side support part 34, 76 Guide surface 35, 77 Needle plate Side support parts 50, 64, 71, 78 Support wall 62 Auxiliary plates 65, 72 Discharge part

Claims (5)

A flat knitting machine including a movable sinker that is movable at the tip of a needle bed disposed at least in front and rear pairs;
In the needle plate erected on each needle bed, a step portion for accommodating the movable sinker is recessed on one side in the thickness direction, and in the step portion, the movable sinker is attached to the mouth of the needle bed. On the other hand, there is provided a swing support portion that supports swinging forward and backward,
The swing support part is
A sinker side support provided on the movable sinker and having an arcuate circumferential surface;
A needle plate side support portion provided on the stepped portion facing the peripheral surface of the sinker side support portion, and having an arcuate guide surface that guides the peripheral surface of the sinker side support portion when the movable sinker swings;
A support wall provided on one side in the thickness direction of the needle plate side support portion and supporting the sinker side support portion whose circumferential surface is guided by the guide surface from one side in the thickness direction of the needle plate;
A flat knitting machine equipped with a movable sinker.   The flat knitting machine comprising the movable sinker according to claim 1, wherein the support wall is provided on the needle plate side support portion.   The said support wall is a flat knitting machine provided with the movable sinker of Claim 1 provided in the auxiliary plate laminated | stacked from the thickness direction one side with respect to the said needle plate side support part.   4. The support wall according to claim 1, wherein the support wall protrudes radially inward of the arc from the guide surface of the needle plate side support portion, and the amount of protrusion decreases as the guide surface approaches the upper end of the guide surface. A flat knitting machine comprising the movable sinker according to any one of the above.   4. The discharge wall according to claim 1, wherein the support wall is provided with a discharge portion that discharges the yarn waste from the swing support portion to one side in the thickness direction of the needle plate side support portion. Flat knitting machine equipped with the movable sinker described.

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