JP2013241698A - Compound needle of flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound needle of a flat knitting machine, having a simple structure which can prevent the tail ends of blades from being deflected, thereby preventing the tails thereof or the like from being bent in the width direction and being damaged at the time of insertion into a needle groove, or the like.SOLUTION: In a compound needle of a flat knitting machine, a slider base 15 shown in (a), in a state of being combined with two blades 16 and 17, includes a hanging-down part 15a hanging down to the side of a needle body 13 behind a guide projection 16d. The lower part of the hanging-down part 15a is provided with a groove 15b extended in the front-rear direction in the middle of the thickness thereof. The blades 16 and 17 include tail ends 16f and 17f, respectively, which are engaged with the groove 15b of the hanging-down part 15a of the slider base 15. By a simple structure in which the tail ends 16f and 17f of the blades 16 and 17 are engaged with the groove 15b provided in the hanging-down part 15a, the deflection of tails 16c and 17c in the width direction can be restricted, so that the blades 16 and 17 or the like can be prevented from being bent in the width direction and being damaged at the time of insertion into a needle groove, or the like.

Description

  The present invention relates to a compound needle of a flat knitting machine that is accommodated in a needle groove formed on a needle bed of a flat knitting machine and that opens and closes a hook with a slider.

  Conventionally, in a flat knitting machine, a needle groove as a space for accommodating a knitting needle is formed in a needle bed. A compound needle 1 may be used as the knitting needle (see, for example, Patent Document 1). In the flat knitting machine, although not illustrated, a pair of needle beds are provided before and after the tooth opening is sandwiched, and a large number of needle grooves are provided in parallel in each needle bed. The compound needle 1 is combined such that the needle body 3 and the slider 4 are arranged below the needle body 3 on the bottom surface side of the needle groove and above the slider 4 on the surface side of the needle groove. . The needle body 3 can reciprocate in the front-rear direction along the needle groove so that the front hook 3a moves forward and backward to the tooth opening. The slider 4 is a combination of a slider base 5 and two blades 6, 7, and can be moved relative to the needle body 3 in the front-rear direction.

  Each blade 6, 7 has a tongue 6 a, 7 a that opens and closes so as to sandwich the hook 3 a from both sides in the width direction by relative movement with respect to the needle body 3, and a slider base at a coupling portion 8 provided at the rear 5. In the figure, the hook 3a is closed by the tongues 6a and 7a. When the tongues 6a and 7a are retracted, the hook 3a is opened. Further, when the tongues 6a and 7a are further advanced, the tongues 6a and 7a advance beyond the hooks 3a to the tooth mouth, and transfer and the like become possible.

  In the joint portion 8, the slider base 5 and the two blades 6 and 7 are fixed by caulking or the like. The two blades 6, 7 have guide portions 6 b, 7 b at the rear portions of the front end tongues 6 a, 7 a, and are guided by being fitted into grooves 3 b provided in the needle body 3. A tip end portion of a jack 9 is connected to the tail end portion of the needle body 3 to form a connecting portion 10. The slider base 5 is provided with a hanging portion 5 a, and the bottom surface is in sliding contact with the top surface of the needle body 3 in the range from the front of the coupling portion 8 to the tail portions 6 c and 7 c of the blades 6 and 7. In the lower part of the hanging part 5a, a side wall groove 5b that opens to one side, in the drawing, and extends in the front-rear direction is provided, and accommodates the tail parts 6c and 7c of the blades 6 and 7. The tail portion 6c on the near side is bent so that the middle portion swells to the near side from the surface of the side wall groove 5b, and slides on the side wall of the needle groove to generate a sliding resistance.

  As the slider 4, a guide projection 5 c that protrudes downward from the lower surface of the hanging portion 5 a is provided behind the coupling portion 8, and the guide projection 5 c is engaged with a groove 3 c provided in the needle body 3, so that the compound needle 1 is Prevents falling in the width direction when inserting into the groove. FIG. 15 of Patent Document 1 also shows an example in which a portion corresponding to the guide protrusion 5c is provided in the blade 7 accommodated in the back side of the side wall groove 5b, and the side wall groove 5b is opened downward.

  There is also known a technique in which the slider base 5 and the blades 6 and 7 are coupled by providing a longitudinal groove that opens downward and extends in the front-rear direction in the middle of the thickness of the slider base (see, for example, Patent Document 2). . The blades 6 and 7 are provided with bats extending in the front-rear direction and projecting upward from the portions accommodated in the longitudinal grooves, and the slider base is provided with a recess for fitting the bats at the upper part of the longitudinal grooves. By firmly crimping the bat in a state where the bat is fitted in the recess, a strong connection is made.

Japanese Patent No. 2946323 Japanese Patent No. 2747457

  In the composite needle 1 as shown in FIG. 6, the fine groove having a high density as a knitting needle has a smaller width of the needle groove and a thinner slider base 5 that can be accommodated. When the thickness of the slider base 5 is reduced, it becomes difficult to form the joint portion 8 with the side wall groove 5b as in Patent Document 1 and the joint portion with the longitudinal groove as in Patent Document 2. In Patent Document 1, the tail portions 6 c and 7 c are extended rearward from the coupling portion 8 in order to generate sliding resistance. Even in the case of Patent Document 2 where no sliding resistance is generated, the portions corresponding to the blades 6 and 7 extend to the rear of the bat. The blades 6 and 7 need to extend the tail portions 16c and 17c to a certain length for the purpose of maintaining the strength at the coupling portion 8 or the like.

  If the thickness of the slider base 5 is reduced, it becomes difficult to provide the guide protrusion 5c on the part that hangs down from the slider base 5 to the upper surface of the needle body 3, such as the hanging part 5a. It can be considered that the blades 6 and 7 are provided at the tail portions 6c and 7c.

  However, the tail portions 6c and 7c exposed without being accommodated in the side wall groove 5b or the longitudinal groove are in a cantilever state supported by the slider base 5 at a portion corresponding to the coupling portion 8, and receive the tail in the lateral direction. The edge is easy to swing. If the compound needle 1 is accommodated in the needle groove, the bending in the lateral direction is limited by the width of the needle groove, but there is no restriction when the compound needle 1 is inserted into the needle groove, so the tail portions 6c and 7c. May be bent outward in the width direction. As the gauge becomes finer, the thicknesses of the blades 6 and 7 become thinner, so that it becomes easier to bend. In particular, when a portion corresponding to the guide protrusion 5c is provided, the tail portions 6c and 7c including the portion may be damaged.

  An object of the present invention is a compound needle for a flat knitting machine, which has a simple structure and does not sway and damage the tail end portion of the blade in the width direction when inserted into the needle groove. Is to provide.

The present invention is a state in which needle needles arranged side by side on the needle bed of the flat knitting machine are combined so that a needle body is arranged below the bottom surface side and a slider is arranged above the surface side. Is housed as a knitting needle
The needle body can be reciprocated in the front-rear direction along the needle groove so that the hook on the front part moves forward and backward to the mouth.
The slider has a slider base and two blades coupled at the coupling portion, and is capable of relative movement in the front-rear direction with respect to the needle body.
In the compound needle of flat knitting machine,
The two blades coupled to the slider base have a guide projection that projects downward from at least one of the tail portions behind the coupling portion,
The needle body is provided with a groove for engaging the guide protrusion,
The slider base body has a hanging portion that hangs down from the rear side of the guide projection to the needle body side in a coupled state with the two blades.
The hanging part is provided with a groove extending in the front-rear direction in the middle of the thickness at the lower part,
Each tail has a tail end that engages a groove at the bottom of the slider base,
This is a compound needle of a flat knitting machine.

In the present invention, at the joint between the slider base and the two blades,
The two blades are provided with a recess that has a side wall that opens on the slider base side and extends downward from both ends in the front-rear direction, and a narrow width portion that is narrower than the width of the opening end.
The slider base is provided with a wide portion whose width in the front-rear direction is wider than the narrow portion of the concave portion, and is inserted into the concave portion from above to be coupled, and during the insertion, the wide portion becomes the narrow portion of the concave portion by elastic deformation. Protrusions that can pass through are provided,
In the convex part, a groove is provided in the middle of the thickness, and the concave part is inserted into the groove.
It is characterized by that.

Further, in the present invention, the slider base has a groove for accommodating an intermediate portion that is the front of the coupling portion with the two blades, together with the groove of the convex portion and the groove of the hanging portion, below the needle groove. It is characterized by being formed to open.

  According to the present invention, in the slider, the tail end portion of the blade engages with a groove provided in the middle of the thickness of the hanging portion of the slider base, and the tail portion of the blade is moved together with the coupling portion on both sides in the longitudinal direction by the slider base. It can be supported in a both-sided state, and the tail end can be prevented from shaking. At least one of the tails is provided with a guide protrusion that protrudes downward and is fitted into a groove provided in the needle body, preventing the slider from falling off in the width direction when inserting a compound needle into the needle groove. can do. In the present invention, such a simple structure can prevent the blade and the like from being damaged by bending in the width direction when inserted into the needle groove.

  According to the present invention, the concave portion is provided on the side of the two blades at the joint between the slider base and the two blades. The recess has a side wall that opens to the slider substrate side, extends downward from both ends in the front-rear direction, and has a narrow portion where the width between the side walls is narrower than the width of the opening end. The convex part provided on the slider base side is provided with a wide part whose width in the front-rear direction is wider than the narrow part of the concave part. The wide part is inserted into the concave part from above and joined and elastically deformed in the middle of the insertion. Can pass through the narrow portion of the recess. Since it is elastically deformed at the time of insertion, the convex portion and the concave portion can be joined with sufficient strength after the insertion. If the coupling is released by elastic deformation opposite to that at the time of insertion, the two blades can be removed from the slider base. The convex part is provided with a groove in the middle of the thickness, and the concave part is inserted into the groove. Since the portion where the two blades overlap in the concave portion is sandwiched by the groove at the tip of the convex portion provided on the slider base side, the blade can be prevented from coming off from the connecting portion in the width direction. Since the tail portion of the blade suppresses the vibration at the tail end portion, the groove at the tip of the convex portion can be prevented from being damaged by the force in the width direction generated when the needle portion is inserted into the needle groove.

  Further, according to the present invention, the slider base can be cut from below, and the three grooves of the front part, the convex part and the hanging part can be formed in the same process.

FIG. 1 is a side view, a cross-sectional view, and a bottom view showing a configuration of a main part of a compound needle 11 as an embodiment of the present invention. FIG. 2 is a side view showing a state in which the compound needle 11 of FIG. 1 is disassembled into component parts. FIG. 3 is a partial side view and bottom view of the slider base 15 of FIG. 2 and a partial plan view and side view of the needle body 13. FIG. 4 is a partial side view and sectional view of the slider base 15 and a partial side view and sectional view of the blade 17 showing the configuration of the coupling portion 18 of FIG. FIG. 5 shows a state where the slider 14 is most retracted with respect to the needle body 13 in the compound needle 11 of FIG. 1 and a state where the hooks 13a of the needle body 13 are closed by the tongues 16a and 17a of the slider 14. FIG. FIG. 6 is a side view showing an example of a compound needle 1 conventionally used in a flat knitting machine.

  1 to 5 show the configuration of the compound needle 11 as an embodiment of the present invention. In the compound needle 11 of the present embodiment, only the 10th numerical value is different in the portion corresponding to the compound needle 1 in FIG. 6, and the other parts are denoted by the same reference numerals, and redundant description may be omitted. . In addition, parts that are not described in the drawings to be described may be referred to with reference numerals described in other drawings.

  Fig.1 (a) shows the structure of the principal part with respect to the compound needle 11 of one Example of this invention. The composite needle 11 is used by being inserted into a needle groove of a needle bed provided in the flat knitting machine, similarly to the composite needle 1 of FIG. As will be described later, the compound needle 11 is also accommodated in the needle groove in a state where the needle body 13 and the slider 14 are combined. The needle body 13 has a hook 13a at the front. The slider 14 is a combination of a slider base 15 and two blades 16, 17. Each blade 16, 17 has tongues 16 a, 17 a at the front to open and close so as to sandwich the hook 13 a from both sides in the width direction. Then, it is coupled to the slider base 15 by the rear coupling portion 18.

  The slider base body 15 shown in FIG. 1A has a hanging portion 15 a that hangs down from the coupling portion 18 toward the needle body 13 side in a coupled state with the two blades 16 and 17. The drooping portion 15a is provided with a groove 15b extending in the front-rear direction in the middle of the thickness. Each blade 16, 17 has tail ends 16 f, 17 f that engage with the groove 15 b of the hanging portion 15 a at the tail portions 16 c, 17 c behind the coupling portion 18. With such a simple structure, in the slider 14 of the present embodiment, the slider 16 includes the coupling portion 18 and the engagement portions of the tail ends 16f and 17f with respect to the groove 15b with respect to the tail portions 16c and 17c of the blades 16 and 17. The base body 15 can be supported in a both-sided state, and the tail portions 16c, 17c and the like can be prevented from being easily bent in the width direction when inserted into the needle groove. Since at least one of the tail portions 16c and 17c is provided with a guide protrusion 16d that protrudes downward and is engaged with the groove 13c of the needle body 13, the slider 14 is moved to the needle body when the compound needle 11 is inserted into the needle groove. 13 can be prevented from falling off in the width direction. Even if the thickness of the blades 16 and 17 is reduced due to the fine gauge, the tail portions 16c and 17c are supported by the slider base 15 in a state of being supported by both ends, so that it is difficult to bend and the guide protrusion 16d is also hardly damaged. it can.

  FIG. 1B and FIG. 1C show cross-sectional configurations viewed from the cross-section lines BB and CC in FIG. 1A, respectively. In the configuration of FIG. 1B, the guide protrusion 16d provided on one blade 16 protrudes downward in the center in the width direction, and an offset is provided in order to engage with the groove 13c provided in the needle body 13. ing. In the configuration of FIG. 1 (c), as will be described later, the convex portion 15c and groove 15d of the slider base 15 and the concave portions 16e and 17e of the blades 16 and 17 form a coupling portion 18 that can be coupled and removed. ing.

  FIG. 1 (d) shows the configuration of the bottom of the hanging part 15 a of the slider base 15. A groove 15b extending in the front-rear direction is provided in the middle of the width direction. The tail ends 16f and 17f of the blades 16 and 17 are engaged with the groove 15b.

  FIG. 2 shows a state in which the compound needle 11 of FIG. 1 is disassembled into a needle body 13, a slider base 15, two blades 16 and 17 and a jack 19 as constituent parts. The slider base 15 is also provided with a groove 15e at the front. The two blades 16 and 17 have a symmetrical shape with respect to a plane parallel to the paper surface except that the guide protrusion 16d is provided only on one side. A similar guide projection may be provided on the other blade 17. Front guide portions 16b and 17b are provided in the vicinity of the tongues 16a and 17a at the front portions of the two blades 16 and 17, respectively. The two blades 16 and 17 are accommodated in the groove 15e of the slider base 15 between the tongues 16a and 17a and the recesses 16e and 17e, that is, in the intermediate portions 16g and 17g in front of the coupling portion 18. The front portion of the needle body 13 is provided with a groove 13b for guiding the front guide portions 16b and 17b in the front-rear direction, the bottom surface serving as a cam surface, and driving the tongues 16a and 17a up and down. At the rear part of the needle main body 13, there are provided a recess 13 d in which the tip 19 a of the jack 19 is fitted and a recess 13 e in which the rear end 15 f of the hanging part 15 a of the slider base 15 is fitted.

  FIG. 3 shows partial configurations of the slider base 15 and the needle body 13 of FIG. As shown in FIGS. 3 (a) and 3 (b), grooves 15e, 15d, and 15b that open to the bottom surface side are provided in the front portion, the convex portion 15c, and the hanging portion 15a of the slider base body 15, respectively. Since the opening direction is the same, the slider base 15 can be formed in the same process of cutting from below. In the joint portion 18, the groove width of the groove 15d is preferably equal to the thickness of the two blades 16 and 17. When the three grooves 15b, 15d, and 15e have the same groove width, the processing can be performed more simply. As shown in FIGS. 3C and 3D, the needle main body 13 is provided with a groove 13c opened on the upper surface, and the guide protrusion 16d can be engaged therewith. The projecting portion 15c of the slider base 15 and the lower end surface of the hanging portion 15a can be brought into contact with the peripheral surface where the groove 13c is opened, and can be supported when sliding in the front-rear direction.

  FIG. 4 shows a configuration of the coupling portion 18 of FIG. 4A shows a partial side surface configuration in the vicinity of the convex portion 15c of the slider base body 15, and FIG. 4B shows a cross-sectional configuration viewed from the cutting plane line BB in FIG. 4A. . FIG. 4C shows a side surface configuration in the vicinity of the concave portion 16e of the blade 16, and FIG. 4D shows a cross-sectional configuration viewed from the cutting plane line DD in FIG.

  In the joint portion 18 between the slider base 15 and the two blades 16 and 17, the blades 16 and 17 are provided with recesses 16e and 17e. The recess 16e of the blade 16 has a side wall that opens to the slider base 15 side and extends downward from both ends in the front-rear direction, and a narrow portion 16h in which the width between the side walls is narrower than the width of the opening end. The blade 17 is also provided with a narrow portion similar to the recess 17e. The convex portion 15c provided in the slider base 15 is provided with a wide width portion 15f having a width in the front-rear direction wider than the narrow width portion 16h of the concave portions 16e and 17e, and is inserted into and coupled to the concave portions 16e and 17e from above. In the middle, the wide portion 15f can pass through the narrow portion 16h by elastic deformation.

  In the coupling portion 18, the concave portions 16 e and 17 e of the two blades 16 and 17 are inserted into the groove 15 d provided in the middle of the thickness of the convex portion 15 c of the slider base 15. Since it is elastically deformed at the time of insertion, the convex portion 15c and the concave portions 16e and 17e can be coupled with sufficient strength after the insertion, and the coupling can be released if it is removed in the opposite direction to the insertion. Further, since the portion where the two blades 16 and 17 are overlapped by the concave portions 16e and 17e is sandwiched by the groove 15d at the tip of the convex portion 15c provided on the slider base 15 side, the blades 16 and 17 are detached from the coupling portion 18 in the width direction. Can not be. When the plate thickness of the slider base 15 is reduced, the strength of the portion of the convex portion 15c where the groove 15d is provided also decreases, and a large force in the width direction is applied to the tail portions 16c and 17c of the blades 16 and 17 when inserted into the needle groove. There is a risk of damage. By engaging the tail end portions 16f and 17f of the tail portions 16c and 17c with the groove 15b of the hanging portion 15a to suppress vibration, the groove 15d can be prevented from being damaged.

  FIG. 5 (a) shows a state in which the slider 14 is most retracted with respect to the needle body 13 in the compound needle 11 of FIG. 1, and the hooks 13a of the needle body 13 are closed with the tongues 16a and 17a of the slider 14. Each state is shown in (b). As shown in FIG. 5A, the rear end 15f of the drooping portion 15a of the slider base 15 is fitted in the recess 13e of the needle body 13, so that the needle body 13 and the slider 14 are not separated in the vertical direction. ing. Accordingly, the operation of inserting the compound needle 11 into the needle groove can be performed in a state where the needle body 13 and the slider 14 are reliably combined.

  In the coupling portion 18 of the present embodiment, the projection 15c of the slider base 15 and the recesses 16e and 17e of the two blades 16 and 17 are coupled by insertion with elastic deformation, and are not fixed by caulking. It can also be disassembled by releasing the bond. Similarly to Patent Document 1 and Patent Document 2, the slider base 15 and the blades 16 and 17 may be fixed by caulking or the like. In any case, if the present invention is applied, the tails 16c and 17c of the blades 16 and 17 are prevented from swinging in the width direction, and the tails 16c and 17c, the guide protrusions 16d provided on the tails 16c and 17c, etc. are damaged. Can not be.

DESCRIPTION OF SYMBOLS 11 Compound needle 13 Needle main body 13b, 13c, 15b, 15d, 15e Groove 14 Slider 15 Slider base 15a Hanging part 15c Protruding part 15f Wide part 16, 17 Blade 16c, 17c Tail part 16d Guide protrusion 16e, 17e Concave part 16f, 17f Tail end Part 16g, 17g Intermediate part 16h Narrow part 18 Coupling part

Claims (3)

Accommodated as a knitting needle in a combined state so that the needle body on the bottom side and the slider on the top side are arranged in the needle groove arranged side by side on the needle bed of the flat knitting machine And
The needle body can be reciprocated in the front-rear direction along the needle groove so that the hook on the front part moves forward and backward to the mouth.
The slider has a slider base and two blades coupled at the coupling portion, and is capable of relative movement in the front-rear direction with respect to the needle body.
In the compound needle of flat knitting machine,
The two blades coupled to the slider base have a guide projection that projects downward from at least one of the tail portions behind the coupling portion,
The needle body is provided with a groove for engaging the guide protrusion,
The slider base body has a hanging portion that hangs down from the rear side of the guide projection to the needle body side in a coupled state with the two blades.
The hanging part is provided with a groove extending in the front-rear direction in the middle of the thickness at the lower part,
Each tail has a tail end that engages a groove in the hanging portion,
A compound needle of a flat knitting machine. At the joint between the slider base and the two blades,
The two blades are provided with a recess that has a side wall that opens on the slider base side and extends downward from both ends in the front-rear direction, and a narrow width portion that is narrower than the width of the opening end.
The slider base is provided with a wide portion whose width in the front-rear direction is wider than the narrow portion of the concave portion, and is inserted into the concave portion from above to be coupled, and during the insertion, the wide portion becomes the narrow portion of the concave portion by elastic deformation. Protrusions that can pass through are provided,
In the convex part, a groove is provided in the middle of the thickness, and the concave part is inserted into the groove.
The compound needle of the flat knitting machine according to claim 1. The slider base is formed with a groove for accommodating an intermediate portion that is the front of the coupling portion with the two blades, together with the groove of the convex portion and the groove of the hanging portion, and opens below the needle groove. The compound needle of the flat knitting machine according to claim 2, wherein the compound needle is used.

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