KR20110138157A - A compound needle for a flat knitting machine - Google Patents

Abstract

PURPOSE: A combination needle of a flat knitting machine is provided to ensure stable blade movement in a blade groove. CONSTITUTION: A combination needle of a flat knitting machine comprises a needle main body(3), a slider, and a contacting part(1f,2f). The needle main body comprising a hook(3a) at the front portion and a blade groove(3b) at the back portion. The blade groove contains the lower portion of the slider. The blade has tongue(1a,2a) at the front portion. The contacting part contacts forward an opposite blade and maintains the interval between the tongues.

Description

Flat needle knitting machine {A COMPOUND NEEDLE FOR A FLAT KNITTING MACHINE}

According to the present invention, a slider is accommodated in a needle groove formed in a needle bed of a flat knitting machine, and a slider for opening and closing a hook is provided on two blades. It relates to a compound needle (compound needle) of the flat knitting machine formed by.

Conventionally, in the flat knitting machine, the needle needle accommodated in the needle groove formed in the needle bed is driven to slide in the needle groove to advance and retract the hook of the front end into the needle bed gap, thereby causing the needle bed gap. The knitting fabric is knitted by the knitting yarn supplied from the hook to the hook. As the knitting needle, a compound needle combining a needle body having a hook at a front end and a slider having a tongue capable of relative movement with respect to the needle body and opening and closing the hook at the front end may be used. have. In the composite needle, a slider formed by two blades is also used so that it is possible to split between both sides of the hook and to advance beyond the hook into the needle bed gap (see Patent Documents 1 and 2, for example).

The two blades as disclosed in Patent Literatures 1 and 2 are provided with tongues in the front portion, and are bent portions that bend in a direction in which the whole is separated from the tongue to the rear. Is formed and accommodated in a blade groove formed in the needle body having a hook at its tip. In the state where the two blades are accommodated in the blade groove by forming the bending portion, the outer surface of the bending portion slides on the side wall surface of the blade groove, and the expansion in the width direction is limited, and the shear force of the tongue is caused by the reaction force. (前端) near each other in close contact. The tongue is provided with a plurality of bent sections so that the tongue is opened in front of the contact portion. Even if the blade slides in the blade groove, the contact portions near the front end of the tongue by sliding to the side wall surface of the blade groove of the bending portion move on the centerline of the blade groove and come into contact with the opening end of the hook. Separated on both sides of the hook. Thus, the bending part of a blade is formed in order to acquire the effect of centering, such as a position shift prevention with the opening end of a hook, or a lateral shake prevention with respect to the contact part of a tongue. There is also known a technique for forming a separation wall thinner than the hook of the needle body in the blade groove formed in the needle body, dividing the blade groove into two, and maintaining the spacing between the two blades (see, for example, Patent Document 3). ).

Japanese Patent No. 3379947 Japanese Patent No. 3232075 Japanese Patent No. 3532897

If two blades are bent to form a bending portion, the centering effect on the contact portion of the tongue can ensure the operation of opening and closing the hook or moving the tongue further beyond the hook. However, when the slider moves with respect to the needle body, the sliding resistance becomes large, and the driving load increases. In addition, since the blade is bent at the portion of the bending portion, a portion falling from the side wall surface in the blade groove may occur, resulting in a lack of rigidity. In addition, there is a risk that the warp shape of the tongue and the bending part becomes complicated, and the finished shape becomes unstable.

An object of the present invention is to provide a combined needle of a flat knitting machine which can reduce the sliding resistance with a simple configuration and also increase the opening and closing precision of the hook by the tongue.

This invention is accommodated in the needle groove formed in the needle bed of the flat knitting machine in the state which can slide back and forth, and a hook is attached to a front part. A needle body having a blade groove formed behind the hook,

The lower part is accommodated in the blade groove of the needle body, and the hook is opened and closed, and the two blades having a front side with a tongue that can be combined with a stitch are provided side by side, Tongue is a compound needle of a flat knitting machine in which a slider capable of relative movement, such as over a hook, is combined.

Two blades of the slider,

Side by side so that the outer surface slides respectively on both outer walls of the blade groove of the needle body,

A contact portion approaching and contacting the blades on the opposite side in parallel with each other, from the shoulder portion formed upward from the rear portion of the tongue toward the blade groove on the side facing each other, and maintaining at least a gap between the tongues ( To have a part

Compound needle of flat knitting machine characterized by.

Further, in the present invention, the contact portion of the blade is formed by bending the front end side of the shoulder portion toward the counterpart side blade.

It features.

In addition, in the present invention, the two blades of the slider, the distance between the mutually increased toward the front end in the front portion of the tongue

It features.

According to the present invention, since the outer surfaces of the two blades of the slider slide on both outer walls of the blade groove of the needle body, respectively, the movement of the blade in the blade groove can be stabilized. The lower portion of the blade in the blade groove is curved because the shoulder portion, which is formed upward from the rear portion of the tongue, has a contact portion approaching and contacting the blade on the opposite side in parallel with the blade portion. It is possible to maintain the rigidity near the tongue without making it. Since the stiffness around the tongue is maintained, even if the blade is moved with respect to the needle body, it is possible to prevent misalignment and horizontal shaking. Since the space | interval generate | occur | produces between tongues by the contact of a contact part, the blade can be advanced, and the resistance at the time of dividing a tongue by a hook can be made small. The simple configuration of forming a contact portion at the shoulder of the rear portion of the tongue eliminates the need to bend the lower portion of the blade in the blade groove of the needle body, thereby reducing the sliding resistance and increasing the opening and closing precision of the hook by the tongue. have.

Moreover, according to this invention, the contact part can be formed in each blade of a slider by the simple structure which only bends the front end side of the part which goes out of the blade groove of the needle body toward the blade of the counterpart side.

In addition, according to the present invention, the two blades of the slider increase the mutual distance from the front part of the tongue toward the front end, so that the resistance received when advancing beyond the tip of the hook can be reduced.

1 is a partial plan view and a front view showing the structure of a composite needle 5 and two blades 1 and 2 as one embodiment of the present invention.
FIG. 2 is a partial plan view and a front view showing an operating state of the compound needle 5 of FIG.
FIG. 3 is a partial plan view showing the operation of the blades 1 and 2 of FIG.

1 shows the configuration of a compound needle 5 and two blades 1 and 2 as one embodiment of the present invention. In FIG. 2, the operating state of the compound needle 5 of FIG. 3 shows the operation of the blades 1 and 2 of FIG. The blade 1 and the blade 2 are symmetrical with respect to the surface formed in the parallel center, and the portions corresponding to the blade 1 are omitted in the blade 2 even though those shown in the drawings are omitted. It is also present in the blade 2.

In addition, in description of each drawing, what is described in the drawing mentioned above may be mentioned in the code | symbol which is not described in the drawing used as description. In addition, although the composite needle 5 is shown in the state accommodated in the needle groove formed in the needle bed of a flat knitting machine, it does not show in the figure of the needle groove itself. However, the needle bed of the flat knitting machine is inclined to rise toward the needle bed gap which becomes the front of the needle groove and lower as it moves away from the needle bed gap, but the composite needle 5 is in a horizontal posture. Shown in In this posture, it is assumed that the right direction represents the front side of the needle bed gap side and the left side represents the rear side away from the needle bed gap. In addition, the upper part of the drawing is in the direction of rising from the needle groove, and the lower side is in the direction of sinking into the needle groove.

(Example)

1 (a) and 1 (b) show the planar configuration and the frontal configuration of the main part as the composite needle 5, respectively. In the state shown in the figure, the slider formed by joining the two blades 1 and 2 and the base 4 to the needle body 3 is most retreat relatively. In addition, the blades 1 and 2 and the base 4 are coupled in the left direction of the drawing, and the blades 1 and 2 are moved by driving to the base 4, but the coupling portions are not shown in the drawing.

1 (c) and 1 (d) show a planar configuration on the front part side of the blades 1 and 2 and a front configuration on the front part side of the blade 1, respectively. The blades 1 and 2 of the present embodiment have no bends of the tongues 1a and 2a, and are not curved behind the tongues 1a and 2a. Since 2b) is formed, the finished shape is stable and the processing becomes easy.

In the tongues 1a and 2a, stitches are joined to portions extending substantially horizontally to Fig. 1d, and shoulder portions 1c and 2c are formed above them. Guide parts 1d and 2d which protrude outward are formed in the rear part of the shoulder parts 1c and 2c. Guide portion presser formed in the needle body 3 at the position where the guide portion 1d is guided when the blade 1 is retracted with respect to the needle body 3 as shown in Fig. 1 (b). The guide part 1d is pressed downward by the side presser 3c. In the blade 1, the engaging projection 1e stands up from the rear of the guide part 1d. The engaging projection 1e is inserted into the engaging recess 4a formed in the base 4 in the coupled state of the blade 1 and the base 4. By this coupling, when the lower portion of the blade 1 slides in the blade groove 3b of the needle body 3, the upper portion of the blade 1 may be restricted from being shaken outward. The same applies to the blades 2, but those shown in the drawings are omitted.

In the shoulders 1c and 2c, contact portions 1f and 2f are also formed on the front end side. The contact portions 1f and 2f are bent so as to face inward each other so as to maintain the state where the tip approaches and contacts and the gap is formed between the tongues 1a and 2a. Since the linear portions 1b and 2b slide on the sidewalls of the blade grooves 3b and the tip ends of the contact portions 1f and 2f contact each other at positions close to the tongues 1a and 2a, the tongues 1a and 2a are opened. The centering effect can be obtained even without contact.

By forming an inclination in which the thickness decreases toward the front end inside the front ends of the tongues 1a and 2a, the mutual spacing toward the front end can be increased. Further, when the tongues 1a and 2a are curved outward, the spacing between them can be further increased toward the front end. By increasing the spacing at the front end, the opening and closing precision of the hook 3a can be increased.

Figure 1 (e) shows the planar configuration of the front part of the needle body (3). In this embodiment, two blades 1 and 2 are accommodated in a single blade groove 3b, but as in Patent Literature 3, two grooves are formed to accommodate each blade 1 and 2 individually. Also good. Since the outer surface of each blade 1 and 2 can be slid to the outer side wall of each blade groove, the space | interval can be spaced between an inner side surface and an inner side wall, Even if it is a simple structure, a sliding resistance is small and hooks 3a ) Can increase the opening and closing precision.

2 (a) and 2 (b) advance the blades 1 and 2 with respect to the needle body 3 from the retracted state shown in FIGS. 1 (a) and 1 (b), and the tongue 1a. 2a) shows the state in which the hook 3a is closed. At the time of forming a stitch in the flat knitting machine, the hook 3a is opened and the needle body 3 is advanced relative to the blades 1 and 2 so that the knitting yarn is supplied to the hook 3a advancing into the needle bed gap. . If a stitch is formed in the hook 3a, the stitch is relatively retracted by the advancement of the needle body 3, and moves to the tongues 1a and 2a. If the stitches are coupled to the tongues 1a and 2a where the front ends close the hooks 3a by the retraction of the needle body 3, the stitches coupled to the tongues 1a and 2a are knocked over and released. do. In this embodiment, since the front ends of the contact portions 1f and 2f are brought into contact with each other when the blades 1 and 2 and the needle body 3 move relative to each other, there is no positional shift or horizontal shaking. The front end of the tongue 1a, 2a is contacted with the opening end of the hook 3a, and the hook 3a can be reliably closed.

2 (c) and 2 (d) show a state where the tongues 1a and 2a are advanced beyond the position of the hook 3a. As shown in Fig. 2 (c), the front portions of the blades 1 and 2, on which the tongues 1a and 2a are formed, are split to both sides of the hook 3a and advanced. Since the lower parts of the blades 1 and 2 accommodated in the blade grooves 3b become straight portions 1b and 2b without curved portions, the lower portions of the blades 1 and 2 move forward in a state where the sliding resistance with the side wall of the blade grooves 3b is small. You can.

3 shows the operating states of the blades 1 and 2 in this embodiment. That is, Fig. 3A shows a state in which the blades 1 and 2 are parallel. Fig. 3 (b) shows the state just before the blades 1 and 2 close the hook 3a. 3 (c) shows that the blades 1 and 2 close the hook 3a and move further to open between the tongues 1a and 2a.

As shown in Fig. 3 (a), the blades 1 and 2 are substantially parallel in parallel, and only the contact portions 1f and 2f are bent inward so that the ends thereof come into contact with each other to maintain overall rigidity. This can prevent misalignment or horizontal shaking. The space | interval W of the outer surface of the blades 1 and 2 is kept equal to the width | variety of the blade groove 3b.

As shown in Fig. 3 (b), even when the blades 1 and 2 are accommodated in the blade grooves 3b of the needle body 3, the straight portions 1b and 2b are formed and are not curved. The outer surfaces of the straight portions 1b and 2b may be in contact with the side wall surface of the blade groove 3b to maintain rigidity. Since the contact portions 1f and 2f are also in contact with each other at the tip, there is no gap and the rigidity can be maintained. Since the tongues 1a and 2a accommodated in the blade grooves 3b are not preloaded to bend inwardly, the spacing X between the front ends can be kept wide, so that the position shift with respect to the centerline 5a is also generated. I never do that. Therefore, even if the blades 1 and 2 are advanced with respect to the needle body 3, the opening end of the hook 3a can be securely entered in the space X, and derailment can be avoided.

As shown in Fig. 3 (c), in the state where opening between the tongues 1a and 2a by the hooks 3a is started with respect to the blades 1 and 2, the inside of the tongues 1a and 2a and the hook ( The outside of 3a) is in contact with the length L. In the blades 1 and 2, since the preload in the direction of closing the tongues 1a and 2a is small and the contact length L is also sufficient, the resistance when opening between the blades 1 and 2 does not increase.

In the above description, the contact portions 1f and 2f are formed by bending the front ends of the shoulder portions 1c and 2c, but the contact portions may be formed by other methods such as punching out.

1, 2: blade
1a, 2a: tongue
1b, 2b: straight part
1f, 2f: contact
3: needle body
3a: hook
3b: blade groove
5: compound needle

Claims (3)

It is housed in the needle groove formed in the needle bed of the flat knitting machine in the state which can slide back and forth, and is provided with the hook in the front part, A needle body having a blade groove formed at a rear side thereof;
The lower part is accommodated in the blade groove of the needle body, and the hook is opened and closed, and the two blades having a front side with a tongue that can be combined with a stitch are provided side by side, Tongue is a compound needle of a flat knitting machine in which a slider capable of relative movement, such as over a hook, is combined.
Two blades of the slider,
Side by side so that the outer surface slides respectively on both outer walls of the blade groove of the needle body,
A contact portion approaching and contacting the blades on the opposite side in parallel with each other, from the shoulder portion formed upward from the rear portion of the tongue toward the blade groove on the side facing each other, and maintaining at least a gap between the tongues ( To have a part
Compound needle of flat knitting machine characterized by.
The method of claim 1,
The contact portion of the blade is formed by bending the front end side of the shoulder portion toward the blade on the opposite side.
Compound needle of flat knitting machine characterized by.
The method according to claim 1 or 2,
The two blades of the slider have a mutual increase in the front end of the tongue toward the front end.
Compound needle of flat knitting machine characterized by.

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