JPS5947061B2 - Circular knitting machine for producing stocking-like knitted fabrics with moving stitch patterns - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine for producing socks with a perforated pattern by circular knitting and stitch transfer.

This type of socks is currently made with linear machines, and it takes a lot of time to produce the tubular knitted fabric, resulting in a lack of machine production capacity, which has a significant impact on the product price. is giving.

The main object of the present invention is to provide a sock manufacturing machine that, in addition to its function as a normal circular knitting machine, can also create a perforated pattern by stitch transfer, especially on the part of the foot below the ankle in addition to the shin part. It's about doing.

Another object of the present invention is to provide a machine that has the same reliability as the machine of the present invention and is easy to handle by specially modifying a conventional circular knitting machine.

A further object of the present invention is to provide a machine that has a higher production rate and can be manufactured at significantly lower cost than machines currently in use.

Yet another object of the present invention is to use knitting yarns of various types and thicknesses to create patterns with a wide range of stitch transfers for men, women, and children.

The object is to provide a rounded rotatable needle cylinder having at least a group of needles with a long downward projection and a group of needles with a short downward projection; a ribbed dial that rotates at the same speed as the needle cylinder eccentrically relative to the needle cylinder and forms a stitch movement zone in a wide area of the internal space formed inside the needle cylinder; a moving member sliding in a generally radially extending groove provided in said ribbed dial for transferring from one needle to another, one group having a number of long projections and one group having a number of short projections; a jack connected to the needle for lifting the needle; a pattern slide device that engages with the protrusion of the jack to lift the needle to a height for stitch transfer; and a cam device that engages the protrusion of the needle. and a needle lifting device each having two control modes, one for lifting all the needles and jacks and the other for lifting only needles and jacks having long protrusions, the movable member being said wide. This method is based on a stitch transfer system in which a stitch of knitting yarn is picked up from a needle in the area and transferred to another needle by utilizing the speed difference in the direction tangential to the trajectory at the tip of the needle and the moving member, which is caused by the eccentricity of the rib dial with respect to the needle cylinder. Achieved by a patterned circular knit sock manufacturing machine.

Other features and advantages of the invention will become clearer from the following description of preferred, but non-limiting embodiments of the invention, illustrated in the accompanying drawings, in which: FIG.

The circular knitting machine of the present invention includes a needle cylinder 1 and a needle cylinder 1.
It has a needle 3, an intermediate member 4, and a jack 5, which are slidably arranged in a groove 2 provided on the outer surface of the cylinder and along the entire length of the cylinder. The needle 3 is pushed up and the downward protrusion of the needle 3 is inserted into a cam slot (not shown) according to a known technique, and the cam drives the needle 3 in the vertical direction.

The needle 3 includes a stitch-holding shoulder 3a provided at a position considerably lower than the hook 3b and the latch needle 3c.

Immediately below the shoulder portion 3a, a notch 3d is provided to facilitate the encounter between the needle 3 and the inner and outer moving members 6, 7, as will be described later.

The cut 3d is the needle 3 as shown in FIGS. 14 and 5.
each recess has a flat bottom 51 and an inner side 52 suitably inclined with respect to the side 50 of the needle 3, the height of which is as high as the above-mentioned height. It is set at approximately the same height as the moving member 6°7.

Furthermore, the needle 3 consists of three types of needles each having a downward protrusion having different protrusion lengths, that is, a long protrusion 3f, a medium protrusion 3g1, and a short protrusion 3h.
Around the needle group are a needle group having a short protrusion 3h, a needle group having a medium protrusion 3g, and a long protrusion 3.
The three types of needle groups are arranged in the order of the needle groups with f and such that the group with long protrusions is followed by the group with the first short protrusions.

The needle 3 is fitted with a plurality of elastic rings 3e inserted therein at appropriate intervals, which are normally provided to keep the needle 3 attached to the cylinder shell.

The jack 5 consists of two groups, each having a short protrusion 8 arranged on the outer side opposite to each other in the circumferential half of the needle cylinder 1 and a long protrusion 8a arranged on the outer side of the other half; Each of the protrusions 8, 8a engages with a number of slides 9 that are slidably supported in the horizontal direction on the support 10,
The slide 9 is controlled by a rotating pattern drum 11.

The reason why the jack 5 is provided with two long and short protrusions 8, 8a will be described later.

The needle cylinder 1 has, as in the conventional arrangement, an inner cylinder crown 12 and an outer cylinder crown 13, in which a sinker 15 slides in a groove 14 provided radially in the upper part of the inner and outer crowns 12, 13. .

As shown in FIG. 9, the sinker 15 has an upper beak 15a, and this upper beak 15a serves to widen the stitches held by the needles 3 in order to ensure stitch transfer.

Further, the sinker 15 has teeth 15b at known positions,
The sinker 15 is driven back and forth in the groove 14 by a suitable cam via this tooth 15b.

The rib dial 16 is formed into a substantially circular shape and is arranged above the needle cylinder 1 so as to be eccentric to the center of the needle cylinder 1 so as to be freely rotatable.

On the upper side of the rib dial 16, the rib dial 16 is connected to the shaft 1.
A sleeve 16a is provided for fixing the sinker 15 to the sinker 7, and the lower side is shaped so as not to hinder the movement of the sinker 15 in the radial direction.

Furthermore, the upper side of the rib dial 16 is provided with a plurality of grooves 16c for accommodating the inner moving member 6 as shown in the figure.

However, unlike in the past, this groove 16c does not extend in the true radial direction, but is appropriately inclined rearward with respect to the rotation direction, and corresponds to the eccentricity of the rib dial 16 drawn at the center of the rib dial 16. (See Figures 2 and 3).

This design offers the advantage that when the inner moving member 6 enters the notch 3d of the needle 3 to pick up the stitch, the inner moving member 6 and the notch 3d are mutually inclined, thereby ensuring reliable operation.

The inner moving member 6 has a hook 6b whose upper end is substantially horizontal and whose raised portion is inclined inward with respect to the vertical direction.
The shoulder portion 6c facing the hook 6b stands up vertically.

This shape is advantageous for pushing the stitch when transferring the stitch from the inner moving member 6 to the needle 3.

Note that the inner moving member 6 has a protrusion 6a, and is driven in the front-rear direction by cams 35 and 36 via this protrusion 6a.

An annular member 18 having a center q is provided on the same plane as the rib dial 16 and at a position eccentric to the center O of the needle cylinder 1 on the opposite side of the center layer of the rib dial 16.

The upper surface of the annular member 18 is provided with a groove similar to the rib dial 16, and the outer moving member 7 is disposed within this groove.
0, and this track 19
A cam 20 provided at the outer movable member 7 drives the outer moving member 7 forward and backward substantially in the radial direction.

Further, the outer moving member 7 has a hook 7b whose upper end is substantially horizontal and whose inner side of the upper end slightly protrudes inward, and the rising edge of the shoulder 7C facing the hook 7b is the inner moving member. Unlike No. 6, it is not vertical but has a slight slope.

This shape of the outer moving member 7 is convenient for drawing the stitches outward.

During knitting of the sock 22, the sock 22 is suitably pulled downwardly by a known suction or mechanical device to provide tension to the extent that stitches 23 form.

Further, as shown in FIG. 1, a device 24 formed in a pointed conical shape and adjustable from the outside is mounted on the cover 20, and during the stitch transfer, the device 24 moves the stitches from the inner and outer moving members 6, 7. The cover 20 also has a support base (see Fig. 1) for fixing the cover 20 to the frame of the machine. (not shown) is attached.

The needle cylinder 1, rib dial 16, and annular member 18 all rotate in the same direction and at the same rotational speed.

These are rotated by one drive unit through different drive paths.

That is, the needle cylinder 1 is conventionally driven via a gear (not shown) provided at the lower end of the needle cylinder, and the annular member 1
8 is driven by the main shaft 25 via gears 26 and 27.

Note that the gear 27 engages with teeth arranged circumferentially at the bottom of the annular member 18.

In addition, the dial 16 attached to the shaft 17 is attached to the gear 2.
9, 30, 31, and 32, the gear 32 is
A key is secured to the shaft 33 of the clutch 34 so that the cover 20 can be easily removed.

Furthermore, FIG. 1 shows a cam 35.3 that engages with the protrusion 6a of the inner moving member 6 in order to drive the inner moving member 6 back and forth.
6 is illustrated.

Next, we will explain the handling procedures and operation when using this machine to create a pattern by stitch transfer.

The pattern drum 11 is appropriately set according to the intended pattern, and the slide 9 is selectively brought close to the needle cylinder 1 using a projection (not shown) projecting from the outer surface of the pattern drum 11.

The selected slide 9 drives a certain number of jacks 5 upward by engaging the sloped surface of the tip of the slide 9 with the protrusion 8 or 8a of the jack 5, so that this jack 5 drives the corresponding intermediate member 4. The lower projection of the needle 3 is inserted into a cam slot (not shown), and the needle 3 is raised by this cam (note that the needle 3 can be raised in its entirety or only in part).

The selected needle 3 is raised to a height that allows stitch transfer through the normal knitting position.

Note that the stitch transfer considered here means that all stitches are transferred from one needle to another needle.

It should be noted that in this machine two or more stitches are simultaneously transferred from two or more needles to another needle.

The stitch transfer is performed in the following manner in a wide zone extending about 120 degrees on the opposite side to the feed zone E, as shown in FIG.

The first step takes place in the device marked a, just before the wide zone, in which the needle 3, which holds the stitch by hooking it on the shoulder 3c, is lifted.

When the needle 3 rises to a stitch transfer position considerably higher than the normal knitting position, the sinker 15 advances and the upper beak 15a enters the stitch and widens the stitch.

Immediately thereafter, two moving members 6 associated with this needle 3,
7, i.e., the inner or outer moving member moves forward, enters the stitch at the height of the cut 3d made in the needle 3, hooks the stitch, and then the needle 3 returns to its normal position. The moving member then holds and transports the stitches.

Before the moving member reaches the position marked b in the zone, the moving member which carried the needles preceding or following the first mentioned needle 3, i.e. the stitches, was the inner moving member 6 or the outer moving member 7, the leading or trailing needle 3 is lifted up, enters the stitch held on the movable member in position b, and picks up the stitch from the movable member.

When the needle 3 returns to its normal working position, the stitch transfer is completed.

In this way all stitches are transferred from one needle 3 to the other needle 3.
will be moved to

In conclusion, the four adjacent needles A and E shown in Figure 2
, C, and D, the stitches that were initially on needles B and C are then picked up by the inner moving member 6 and the outer moving member 7, respectively, and when the four needles reach position b, the stitches are The stitches are transferred again from each of the moving members 6 and 7 to the needle A and the stitches, respectively.

This is made possible by the fact that the rib dial 16 and the annular member 18 are eccentric with respect to the needle cylinder 1, as will be described later.

When the inner moving member 6 on the ribbed dial 16 is involved in stitch transfer, the stitch is transferred from needle B to needle A moving forward in the direction of rotation.

This is because the rib dial 16 is eccentric with respect to the needle cylinder 1, and while the inner moving member 6 rotates from position a to the position, its relative position to the needle 3 shifts in the forward direction by one step. It is.

On the other hand, when the outer moving member 7 on the annular member 18 is involved in stitch transfer, the stitch is transferred from the needle C to the needle in a backward direction with respect to the rotational direction. This is because the outer moving member 7 is eccentric in the opposite direction to the ribbed dial 16 with respect to the needle 3, and while the outer moving member 7 rotates from position a to position a, the relative position with respect to the needle 3 shifts backward by one step. be.

The transfer of stitches from the needle 3 to the inner or outer moving members 6, 7 is carried out by the incisions 3 formed in the side surface 50 of the needle 3 in the form of oblique cross-cuts, as shown in FIGS. 5, 11 to 14.
This is easily done by d.

Since the cuts 3d are provided on both sides of the needle 3 as shown in FIG. 5, the dowel 3 can easily transfer stitches to either the inner or outer moving members 6 and 7. .

During stitch transfer, the inner moving member 6 does not exert any pulling action;
Since it mainly performs a pushing action, the shoulder portion 6c stands up almost vertically, and since the outer moving member 7 mainly performs a pulling action, the hook 7b is provided with a beak that protrudes toward the receiving side.

One stitch or many stitches can be made into one stitch,
or from more needles 3 to preceding or following needles 3.

Having described the stitch transfer operation, the operation of creating a rhomboid cross jacquard pattern or other pattern on the shin and foot of a sock using the machine of the present invention will now be described.

A first pair of socks with one of the patterns that can be produced by the machine of the present invention are
It is shown in Figure 5.

This sock consists of a first part 37 forming the sock end knitted in a known manner and a complete knitted part 37 formed by all associated needles cooperating with the inner and outer moving members 6, 7 for stitch transfer. A fold-back 38 due to stitch transfer, a shank portion 39 with an inverted ■-shaped motif due to stitch transfer, and a foot portion 4 to be described later.
4, the branches 40 and 41 of said motif are created by successive operation of different needles 3 cooperating with either the inner or outer moving members 6, 7, respectively.

Note that the shank portion 39 has a linear pattern in the vertical direction, and the two types of holes 42 and 43 are inserted into the inner or outer moving member 6,
7 is created in cooperation with needle 3.

To create such a pattern, a corresponding pattern drum 11 is used.

This drum 11 controls the jack 5 and lifts the needles 3 necessary to create the desired pattern to the stitch transfer position.

After knitting the patterned shank portion 39, the leg portion 44 is knitted.

First, the heel part is made using a known method using a circular knitting machine.

To create a pattern on the foot 44, select and drive only the jacks 5 with the long protrusions 8a, drive the slide 9 with the pattern drum 11 so as not to select the jacks 5 with the short protrusions 8, and press the needle cylinder. Bring it closer to 1.

The jack 5 selected in this way drives the corresponding needle 3 and lifts it to the stitch transfer position.

For the same selection purpose, the needle 3 also has two types of protrusions 3f, long and short.
, 3h, and two cam slots (not shown) concentric with and at different distances from the needle cylinder 1 are provided in said protrusion 3f.

3h is driven to lift the needle 3.

The needle raising cam closest to the needle cylinder 1 lifts up all the needles 3, and the farthest needle raising cam lifts only the needles 3 with the long protrusion 3f, so by selecting the needle 3 in this way, only the upper part of the foot You can add patterns.

This needle selection ability makes it possible to create a continuous pattern from the shin part 39 to the upper side of the foot part 44, making it possible to make excellent socks that have not been previously available.

The sock-making machine of the present invention is capable of applying all kinds of stitch transfer patterns to socks, and these patterns can be created by using protrusions of different lengths on the pattern drum 11 and on the needles 3 and jacks 5. With sufficient selection, it can be applied to any part of the sock.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing the configuration and drive device of the sock manufacturing machine of the present invention, FIG. 1a is an enlarged perspective view illustrating the engaged state of the slide and jack in FIG. 1, and FIG. 2 is a needle Figure 3 is a plan view of the rib dial, Figure 4 is a side view of the rib dial with the left half cut away, and Figure 5 shows the relationship between the needle and the inner and outer moving members. FIG. 6 is a bottom view looking up from below of a support cover with cams and tracks that drive the outer moving member, and FIGS. 7 and 8 are illustrations showing the various movement modes of the inner and outer moving members. 9 is a side view of the sinker, FIG. 10 is an explanatory diagram of the operation of the stitch removal device 24, FIGS. 11A, 11B, 11C, and 12A.
Figures 12B, 12C, 13A, 13B, and 13C are side views of needles with long, medium, and short downward protrusions, views taken from direction B, and views taken from direction C, respectively. Fig. 14 is a perspective view illustrating the relative movement of the outer moving member with respect to the needle, and Fig. 15 shows the stitches made from the shin to the foot of socks for men, women, and children by the machine of the present invention. It is a figure which shows one of the pattern patterns by transfer. In the figure, 1 is the needle cylinder, 2 is the groove, 3 is the needle, 3a is the shoulder,
3d is a notch, 3f is a long downward protrusion, 3h is a short downward protrusion, 5 is a jack, 6 is an inner moving member, 7 is an outer moving member, 8 and 8a are protruding parts, 9 is a slide, 11 is a pattern drum , 16 is rib dial, 16c is groove, 1
8 is an annular member, 21 is a cam, 26, 27, 29, 30,
31° and 32 indicate gears.

Claims (1)

[Scope of Claims] 1. A rotatable needle cylinder equipped with a needle having a group of needles having at least a long downward projection and a group of needles having a short downward projection; a ribbed dial located eccentrically with respect to the needle cylinder and rotating at the same speed as the needle cylinder and forming a stitch movement zone in a wide area of the internal space formed inside the needle cylinder, and acting together with the needles of said needle cylinder; a generally radially extending moving member provided on said ribbed dial and sliding therein for transferring stitches from one needle to another; a group of long protrusions and a group of short protrusions; a jack connected to the needle for lifting the needle; a pattern slide device that engages the protrusion of the jack for lifting the needle to a height for passing; and a protrusion of the needle; and a needle lifting device each having two control modes, one for lifting all needles and jacks, and one for lifting only needles and jacks having long protrusions. , the moving member picks up a stitch of knitting yarn from a needle in the wide area and transfers the stitch to another needle by utilizing a speed difference in a direction tangential to the trajectory between the needle and the tip of the moving member, which is caused by the eccentricity of the rib dial with respect to the needle cylinder. A patterned circular knit sock manufacturing machine by stitch transfer, characterized in that it is configured as follows. 2. An annular member having a slightly larger diameter than the needle cylinder, eccentrically located on the opposite side of the axis of the rib dial with respect to the axis of the needle cylinder, and disposed on substantially the same plane as the rib dial, and the annular member a movable member that slides through the grooves and is provided with a hook-shaped end portion on the inner side, which is arranged approximately radially in the center; a cam device that drives the movable member; and a cam device that drives the annular member at the same speed as the ribbed dial and the needle cylinder. A patterned circular knit sock manufacturing machine by stitch transfer according to claim 1, comprising a gear device that drives one rotation. 3. The needle has a laterally extending notch on both sides below the stitch-supporting shoulder, the notch having a flat bottom, a side wall slightly inclined to the side of the needle, and approximately the inner and outer moving members. The patterned circular knit sock manufacturing machine by stitch transfer according to claim 2, wherein the machine forms four parts having the same height.