KR20220063916A - Double circular knitting machine for manufacturing circular knitting fabric containing elastic yarn on the front side - Google Patents

Abstract

The present invention relates to a double-sided circular knitting apparatus for producing a circular knitted fabric by a knitting needle whose longitudinal displacement is changed according to the rotation of a dial and a cylinder. According to the double-sided circular knitting apparatus, a dial on which a plurality of sliding grooves to which horizontal knitting needles are coupled are radially formed on an upper surface, and a cylinder cam in which a plurality of sliding grooves to which vertical knitting needles are coupled are vertically formed on an outer circumferential surface rotate synchronously. A dial cam is installed on an upper side of the dial, and a cylinder cam is installed outside the cylinder so that the knitting motion of the horizontal knitting needle and the vertical knitting needle is induced by guide grooves formed in the dial cam and the cylinder cam. A yarn feeder for supplying yarns and elastic yarns to the horizontal knitting needle and the vertical knitting needle is installed on an upper side of the dial and the cylinder. The yarns are supplied to both the horizontal knitting needle and the vertical knitting needle, and the elastic yarns are supplied only to the vertical knitting needle, so that the elastic yarns are knitted only on a surface of the circular knitted fabrics to be manufactured.

Description

Double-sided circular knitting machine for manufacturing a circular knitting fabric having an elastic yarn on the surface {Double circular knitting machine for manufacturing circular knitting fabric containing elastic yarn on the front side}

The present invention relates to an apparatus for manufacturing a knitted fabric, and more particularly, to a double-sided circular knitting machine for manufacturing a circular knitted fabric by a knitting needle whose longitudinal displacement is changed according to rotation of a dial and a cylinder.

A knitted fabric is a fabric in which the yarn is not crossed and loop-shaped stitches are entangled with each other to form a tissue. Compared to other textile fabrics such as woven or non-woven fabrics, the knitted fabric is superior in stability to wrinkling, and has hygroscopicity, elasticity and It has excellent wearing characteristics.

A machine for producing such a knitting machine is called a circular knitting machine. The circular knitting machine forms a knitting loop by individually or collectively moving the knitting needles having a hook formed at the tip end, and performs a knitting operation of binding adjacent knitting loops to each other.

Such a circular knitting machine is divided into a single circular knitting machine having only a cylinder and a double circular knitting machine having a dial and a cylinder. In general, a double-sided circular knitting machine knits yarn while a needle bed consisting of a dial and a cylinder rotates, and a plurality of latch knitting needles coupled to the bed reciprocate by a cam in the axial direction to knit the knitting machine. will be manufactured In particular, the knitting needle coupled to the dial and the sliding groove of the cylinder is a latch knitting needle having a hook formed on the head of the tip. A protruding piece is formed between the knitting needle, which is the body of the knitting needle, and sliding along the sliding groove forming a cam profile as the needle rotates. An axial reciprocating motion is performed.

In relation to this double-sided circular knit technology, Korean Patent No. 2088139 proposes a double-sided interlock circular knit fabric knitted to include an elastic yarn only on the back side in knitting a double-sided interlock knitted fabric using a nylon or polyester yarn and an elastic yarn. In this way, when the elastic yarn is included only on the back surface, there is an effect of having excellent elasticity and restoring force without greasiness because the elastic yarn is not included on the surface.

However, the back side of the circular knitted fabric containing elastic yarn (span) has a dense structure, and ventilation is blocked, so that sufficient voids cannot be formed on the skin contact surface.

Korean Patent Publication No. 10-2088139 (Registered on March 3, 2020)

The technical problem to be achieved by the present invention is to provide a double-sided circular knitting machine for producing a circular knitted fabric in which the gloss of the elastic yarn is realized on the product surface by a knitting method containing only elastic yarn on the surface.

Another technical problem to be achieved by the present invention is to provide a circular knitted fabric having a soft and cozy skin-contact texture by forming a coarse (not dense) tissue on the back side that does not contain elastic yarn.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A double-sided circular knitting machine according to an embodiment of the present invention for achieving the above technical problem, a dial in which a plurality of sliding grooves to which a horizontal knitting needle is coupled are radially formed on an upper surface, and a plurality of sliding grooves to which a vertical knitting needle is coupled are perpendicular to the outer circumferential surface A cylinder cam formed by A knitting motion of the vertical knitting needle is induced, and a feeding hole for supplying yarn and elastic yarn to the horizontal knitting needle and the vertical knitting needle is installed above the dial and the cylinder, and the yarn is supplied to both the horizontal knitting needle and the vertical knitting needle. and the elastic yarn is supplied only to the vertical knitting needle, and the elastic yarn is knitted only on the surface of the circular knitted fabric to be manufactured.

A supply angle of the elastic yarn may be greater than a supply angle of the yarn.

According to the difference in the feeding angle between the elastic yarn and the yarn, the horizontal knitting needle moving along the dial cam first hangs the yarn on the hook and descends, and then the vertical knitting needle moving along the cylinder cam is the elastic yarn and the Put all the yarn on the hook and start reversing.

The dial cam may include a knit cam and a miss cam, and the cylinder cam may include a multi cam and a miss cam.

The multi-cam is configured in a shape including a horizontal section in the knit cam, and by the horizontal section, the vertical knitting needle descends after hooking the yarn on the hook at the rising position of the horizontal knitting needle and descending.

According to the double-sided circular knitting machine according to the present invention and the circular knitting fabric produced thereby, the skin contact surface that does not contain spandex constitutes a sparse tissue to form more pores so that sweat absorption can be made quickly.

In addition, the surface including the span in the circular knitted fabric is densely and evenly structured to implement a dual structure that can quickly evaporate and discharge the sweat absorbed from the back side.

And, the circular knitted fabric can be expected to block ventilation by a dense surface, and at the same time, a windproof insulation function that maintains body temperature on the skin-contact back side containing a large amount of voids.

In addition, the back side of the circular knitted fabric that is loosely formed in contact with the skin also has the advantage of being easy to promote warmth and contact texture by facilitating the workability of raising, which is a post-processing process for forming hair.

1 is a view showing the appearance of a double-sided circular knitting machine according to an embodiment of the present invention.
FIG. 2 is an excerpted partially cut-away perspective view of the dial and cylinder of the double-sided circular knitting machine of FIG. 1. FIG.
3 is a detailed view of a knitting needle coupled state for the double-sided circular knitting machine of FIG. 1 .
4 is a plan view illustrating a structure of a dial cam according to an embodiment of the present invention.
5 is a plan view showing the structure of a cylinder cam according to an embodiment of the present invention.
6 is a view showing a cross-section of arrangement of a horizontal knitting needle and a vertical knitting needle according to an embodiment of the present invention.
7A to 7G are diagrams schematically illustrating a knitting needle timing of a double-sided circular knitting machine according to an embodiment of the present invention.
8 is a view showing a sharp angle of a yarn and an elastic yarn in a double-sided circular knitting machine according to an embodiment of the present invention.
9 is a view showing the arrangement of the yarn feeder for supplying the yarn and the elastic yarn.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing an external appearance of a double-sided circular knitting machine 100 according to an embodiment of the present invention, and FIG. 2 is a partially cut perspective view of the dial and cylinder of the double-sided circular knitting machine 100. As shown in FIG. As shown, in the double-sided circular knitting machine 100, as a needle bed consisting of a dial 42 and a cylinder 43 rotates, a plurality of latch knitting needles coupled to the needle bed are shafted by a cam profile. While reciprocating in the direction, the yarn 99 is knitted to manufacture a circular knitted fabric. The yarn 99 is provided with a bobbin ring 50 on which a bobbin 51 disposed on the rotating dial is mounted, and the bobbin ring 50 is supplied with yarn from the bobbin 51 and is a double-sided circular knitting machine. (100) is connected to the feeding part that supplies the cylinder located in the center of the body. The bobbin ring 50 and the feeding part may be configured in plurality to provide yarns of different thicknesses.

On the other hand, as shown in FIG. 2, a plurality of sliding grooves 41 are cut and formed in the bed of the double-sided circular knitting machine 100, and the disk-shaped dial 42 constituting the bed has a radial sliding groove 41 on the upper surface. It is formed at equal intervals, and vertical sliding grooves 41 are formed on the outer circumferential surface of the cylindrical cylinder 43 at equal intervals, and the horizontal knitting needles and the vertical knitting needles are coupled thereto, respectively.

The knitting needle coupled to the dial 42 and the sliding groove 41 of the cylinder 43 is a latch knitting needle in which a hook is formed on the head of the tip. An axial reciprocating motion is performed while sliding along the sliding groove 41 by a cam to be described later.

At this time, when the dial 42 and the cylinder 43 rotate, as shown in FIG. 3 , the plurality of sliding grooves 41 of the dial 42 and the sliding groove 41 of the cylinder 43 are respectively coupled to each other. The horizontal knitting needle 16 and the vertical knitting needle 17 of In the coupled state, the horizontal knitting needle 16 and the vertical knitting needle 17 revolve around the rotation axes of the dial 42 and the cylinder 43. In the process of orbiting the horizontal knitting needle 16 and the vertical knitting needle 17, The horizontal knitting needle 16 and the vertical knitting needle 17 are guided in a state in which the protruding pieces 15 of the horizontal knitting needle 16 and the vertical knitting needle 17 are coupled to the guide grooves formed in the dial cam 12 and the cylinder cam 13. ) will perform forward and backward movements.

A plurality of yarn feeding holes are radially arranged concentrically with the center of the double-sided circular knitting machine 100 on the upper outer side of the dial 42 and the cylinder 43 to supply the yarn 99, and the supplied yarn 99 is horizontally knitted. (16) and the vertical knitting needles 17 are captured to form a knitted ring, and a circular knitted fabric is manufactured by binding adjacent knitting rings to each other. The circular knitted fabric manufactured in this way is discharged to the lower side of the double-sided circular knitting machine 100 through a fine spacing between the outer edge of the dial 42 and the upper end of the cylinder 43 .

In the present invention, the dial cam 12 for inducing the forward and backward movement of the horizontal knitting needle 16 is installed in the double-sided circular knitting machine 100 through the horizontal attachment plate 21 as shown in FIG. 3 , the upper side of the dial 42 . A plurality of arc-shaped horizontal attachment plates 21 that are fixedly installed on the body of the double-sided circular knitting machine 100 through the circular fixing plate 31 are radially installed, and on the bottom surface of the horizontal attachment plate 21, the above-mentioned feeding hole It has a structure in which the same number of dial cams 12 are attached.

In addition, the cylinder cam 13 for inducing the lifting motion of the vertical knitting needle 17 is installed in the double-sided circular knitting machine 100 through the vertical attachment plate 22, and on the outside of the cylinder 43, an annular fixing plate 32 is installed. A plurality of wall-type vertical attachment plates 22 that are fixedly installed on the body of the double-sided circular knitting machine through the radially are installed, and the cylinder 43 of the vertical attachment plate 22 has the same number of cylinder cams as the feeder hole on the central surface of the 22. It has a structure to which it is attached.

4 is a plan view illustrating a dial cam 12 according to an embodiment of the present invention. As shown, the dial cam 12 is configured to include a knit cam 121 and a miss cam 123 . Here, the knit cam 121 functions to weave the fabric by knitting the yarn, and the miss cam 123 simply bites the yarn and passes it to weave or weave the fabric in the next process.

Meanwhile, FIG. 5 is a plan view illustrating the cylinder cam 13 according to an embodiment of the present invention. As shown, the cylinder cam 13 may be configured to include a miss cam 123 and a multi cam (multi cam, 124). Here, the multi-cam 124 is configured in a form in which two or more cam modules are mixed. Specifically, the multi-cam 124 combines the functions of the knit cam 121 and other cams, for example, tuck cams. can have as Accordingly, the multi-cam 124 may further have a horizontal section 20 formed horizontally without rising or falling from the knit cam 121 . That is, while the horizontal knitting needle 16 moving along the dial cam 12 starts to descend after hooking the yarn on the hook at the rising position, and descends to the position where the latch is closed, the vertical knitting needle 16 moving along the cylinder cam 13 ( The function of allowing the vertical knitting needle 17 to descend after the descending of the horizontal knitting needle 16 is completed without the descending of the vertical knitting needle 17 is provided by the horizontal section 20 .

In this way, the horizontal module block is provided with a knit cam and a miss cam, and the vertical module block is provided with a multi cam and a miss cam. because you have to

6 is a view showing an arrangement cross-section of the horizontal knitting needle 16 and the vertical knitting needle 17 according to an embodiment of the present invention. The horizontal knitting needle 16 and the vertical knitting needle 17 are disposed in sliding grooves 41 formed in the horizontal needle bed 18 and the vertical needle bed 19, respectively, and the protruding pieces of the horizontal knitting needle 16 and the vertical knitting needle 17 are provided. (15) is inserted into the guide grooves 125 formed in the dial cam 12 and the cylinder cam 13, respectively. Accordingly, as the dial cam 12 and the cylinder cam 13 rotate in the circumferential direction, the horizontal knitting needle 16 can move forward and backward, and the vertical knitting needle 17 can move forward and backward in the left and right directions. At this time, knitting is performed by hooks 10 and 11 formed at the ends of the horizontal knitting needle 16 and the vertical knitting needle 17 by hooking and pulling the yarn according to the action of the respective cams 12 and 13 .

7A to 7G schematically show the timing of knitting of the double-sided circular knitting machine according to an embodiment of the present invention. First, FIG. 7A shows the positions of the horizontal knitting needles 16 and the vertical knitting needles 17 moving along the dial cam (horizontal direction) and the cylinder cam (vertical direction) before rising. 7B and 7C show a state in which the horizontal knitting needle 16 and the vertical knitting needle 17 start to rise at the same time and reach a clearing position.

After that, as shown in FIG. 7D, the nylon or polyester yarn 99 and the elastic yarn 98 are simultaneously supplied, and according to the setting of the sharp angle, the nylon or polyester yarn 99 is a cylinder. In the clearing position of the vertical knitting needle 17 moving along the cam (vertical direction), the vertical knitting needle 17 is supplied a long distance from the head position, and the elastic yarn is rapidly spun close to the vertical knitting needle 17 head position. As shown, this can be adjusted by changing the position of the feeding hole.

Next, in Figure 7e, the horizontal knitting needle 16 moving along the dial cam according to the difference in the sharp angle and the role of the multi-cam 124 provided in the cylinder cam descends by first hooking the nylon or polyester yarn 99 on the hook, The latch is closed, and at this moment, the vertical knitting needle 17 moving along the cylinder in which the latch was kept open by the role of the multi-cam 124 starts to descend.

Next, the vertical knitting needle 17 moving along the cylinder cam in FIG. 7f hooks both the elastic yarn 98 and the nylon or polyester yarn 99 to the hook and starts backwards, and finally, the surface of the circular knitted fabric in FIG. 7g A knit is formed in which both the nylon or polyester yarn 99 and the elastic yarn 98 are included. In this way, a nylon or polyester yarn 99 is knitted on the back side, and it is possible to knit a circular knitted fabric in which any one of the nylon or polyester yarn 99 and the elastic yarn 98 are knitted at the same time on the surface.

8 is a view showing the sharp angle of the yarn and the elastic yarn in the double-sided circular knitting machine 100 according to an embodiment of the present invention, and FIG. 9 is a view showing the arrangement of the yarn feeder for supplying the yarn and the elastic yarn. In FIG. 8, it can be seen that the yarn entering diagonally is the elastic yarn, and the yarn coming in close to the horizontal is the yarn, and the steep angle of the elastic yarn is larger than the steep angle of the yarn. As shown, the elastic yarn is knitted only on the surface of the circular knitted fabric because the elastic yarn is fed only to the vertical knitting needle 17 driven by the cylinder cam and not to the horizontal knitting needle 16 driven by the dial cam.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing the technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10, 11: hook 12: dial cam
13: cylinder cam 15: protruding piece
16: horizontal knitting needle 17: vertical knitting needle
18: horizontal bed 19: vertical bed
20: horizontal zone 21: horizontal attachment plate
22: vertical attachment plate 31: circular fixing plate
32: annular fixing plate 41: sliding groove
42: Dial 43: Cylinder
50: bobbin ring 51: bobbin
98: elastic yarn 99: yarn
100: double-sided circular knitting machine 121: knit cam
123: miss cam 124: multicam

Claims (5)

A dial in which a plurality of sliding grooves to which the horizontal knitting needle is coupled are formed radially on an upper surface, and a cylinder cam having a plurality of sliding grooves to which the vertical knitting needle is coupled are formed vertically on an outer circumferential surface are synchronously rotated,
A dial cam is installed on the upper side of the dial, and a cylinder cam is installed on the outside of the cylinder, and the horizontal knitting needle and the vertical knitting needle are induced by a guide groove formed in the dial cam and the cylinder cam,
A modular cam-type double-sided circular knitting machine in which a feeding hole for supplying yarn and elastic yarn to the horizontal knitting needle and the vertical knitting needle is installed on the dial and the upper side of the cylinder,
The yarn is supplied to both the horizontal knitting needle and the vertical knitting needle and the elastic yarn is supplied only to the vertical knitting needle, whereby the elastic yarn is knitted only on the surface of the circular knitted fabric to be manufactured, a modular cam-type double-sided circular knitting machine. According to claim 1,
A modular cam type double-sided circular knitting machine, wherein the feeding angle of the elastic yarn is greater than the feeding angle of the yarn. 3. The method of claim 2,
According to the difference in the feeding angle between the elastic yarn and the yarn, the horizontal knitting needle moving along the dial cam first hangs the yarn on the hook and descends, and then the vertical knitting needle moving along the cylinder cam is the elastic yarn and the A modular cam-type double-sided circular knitting machine that hooks all yarns on hooks and starts reversing. According to claim 1,
The dial cam includes a knit cam and a miss cam, and the cylinder cam includes a multi cam and a miss cam, modular cam type double-sided circular knitting machine. 5. The method of claim 4,
The multi-cam is configured in a shape including a horizontal section in the knit cam, and by the horizontal section, the vertical knitting needle is lowered after hooking the yarn from the rising position to the hook and lowering the vertical knitting needle. circular knitting machine.

Images