KR101206793B1 - Apparatus for cutting pile yarn in circular knitting machine - Google Patents

Abstract

PURPOSE: An apparatus for cutting pile yarn of a circular knitting machine is provided to reduce the cost of manufacturing the circular knitting machine by omitting compressor wheels and by arranging a sinker and a knife as one set to cut the pile yarn, and to increase the productivity by eliminating the compressor wheels which enables a user to additionally install feeders in the space in which the compressor wheels were installed. CONSTITUTION: A circular knitting machine(1) comprises a cam holder ring(2) which is able to hold a cylindrical knitted fabric in the lower part. A knitting needle driver(3) is mounted on the top of the cam holder ring, where multiple knitting needles(7) are arranged between a cylinder(C) and a knitting needle cam(9), and moves up and down in turn by cam motion when the cylinder is rotating. The knitting needle driver includes the following: a cylinder installed on top of the cam holder ring; a cylinder cam box(5) arranged in the inner side of the cylinder, and equipped with a knitting needle cam; and multiple knitting needles arranged in between the inner side of the cylinder and the cylinder cam box, which are able to move up and down according to a knitting needle butt(11) introduced by the knitting needle cam. The cylinder has a cylindrical shape and has a rotatable structure. The cylinder cam box is arranged on the inner side of the cylinder, and the multiple knitting needles are arranged in the vertical direction between the cylinder cam box and the cylinder. The knitting needle cam is arranged on the outer side of the cylinder cam box to face the inner side of the cylinder. The knitting needle butt protruded from the knitting needles is inserted into the upper and lower guide grooves(13) which are concavely formed on the surface of the knitting needle cam. The upper and lower guide grooves have the repeated shape on the surface of the knitting needle cam to the upper and lower direction.

Description

Pile cutting machine for circular knitting machine {APPARATUS FOR CUTTING PILE YARN IN CIRCULAR KNITTING MACHINE}

The present invention relates to a file cutting device for a circular knitting machine, and more particularly, the sinker and the knife are arranged side by side adjacent to each other in order to advance back and forth sequentially in the loop direction of the pile yarn, thereby easily cutting the loop of the pile yarn even if the indentation wheel is omitted. The present invention relates to a file cutting machine for circular knitting machines.

In general, a circular knitting machine (丸 編 機) is a device for knitting a variety of knitted fabrics, such as clothing, socks, Mary Yasu, belongs to the category of the knitting machine, the needle is arranged in a circular shape to knit the knit in a cylindrical shape.

Such a circular knitting machine consists of a cylinder needle which vertically reciprocates in a cylinder, and a dial needle which advances back and forth on a dial, as described in patent application No. 10-2008-47086 (name: pile yarn cutting device of a circular knitting machine).

Therefore, the pile yarn can be knitted into the fabric by the mutual movement of the cylinder needle and the dial needle.

Then, the circular knitting machine is provided with the indentation wheel in the adjacent position of the dial needle to prevent the pile yarn from being caught by the knife when the knife advances to cut the pile yarn.

Therefore, when the knife moves forward, the pile yarn is caught by the push wheel so that it is no longer pushed, and a constant tension is applied to the knife, so that the knife can cut the pile yarn.

However, the circular knitting machine of such a structure is required to be additionally pushed wheels to cut the pile yarns, and the pushed wheels are made of a urethane material having a suitable strength and elasticity because the friction yarns and the like must be considered, the manufacturing cost increases There is this.

Moreover, since the number of the inclined wheels should be arranged in accordance with the size of the circular knitting machine, the manufacturing cost due to the indented wheels is further increased.

In addition, when a plurality of indentation wheels are arranged, the work process is complicated and malfunction may occur due to this, and furthermore, the complexity of the machine, difficulty of production, and production cost problems are increased because the circular knitting machine structure adopts a double-sided circular knitting machine. There is a problem.

Accordingly, the present invention has been proposed to solve the above problems, and an object of the present invention is to provide a cutting device of a circular knitting machine that can easily cut the loops of pile yarns by omitting the inclined wheel by improving the structure.

The present invention has been made in order to solve the above problems, the present invention is a plurality of needles are disposed between the cylinder and the needle needle cam and a needle needle drive unit for vertically reciprocating movement by the cam movement during rotation of the cylinder and ;

A sinker dial rotatably disposed on an upper portion of the cylinder and having a sinker groove and a knife groove formed on an upper surface thereof to accommodate the sinker and the knife;

A sinker cam disposed at an upper portion of the sinker dial and having a guide groove formed at a bottom thereof so that the butts of the sinker and the knife are inserted and guided;

A lower portion is inserted into a sinker groove of the sinker dial, and an upper portion is inserted into a guide groove formed on a bottom surface of the sinker cam, so that at least one sinker can be moved back and forth by cam movement when the sinker dial is rotated; And

It is arranged side by side adjacent to the sinker, the lower portion is inserted into the knife groove of the sinker dial, the upper portion is inserted into the guide groove formed on the bottom surface of the sinker cam, it is possible to move forward and backward by the cam movement when the sinker dial is rotated. Provided is a circular knitting machine comprising at least one knife.

As described above, the file yarn cutting device of the circular knitting machine according to the present invention has the following advantages.

First, by omitting the yarn wheel, by cutting the pile yarn by arranging the sinker and the knife in one set, the manufacturing cost of the circular knitting machine can be reduced because the manufacturing cost of the yarn sander is not required.

Second, since the indentation wheel can be omitted, the feeder can be additionally installed in the space where the indentation wheel has been disposed, thereby increasing the yield by about 40% or more.

Third, the circular knitting machine according to the present invention can cut a pile yarn of various lengths by selectively applying the sinker to the long sinker and the short sinker according to the length of the loop.

Fourth, the circular knitting machine according to the present invention is convenient to manufacture by taking a single circular knitting machine, it is possible to reduce the production cost.

1 is a partial cross-sectional view showing a needle needle drive unit, a sinker and a knife of a circular knitting machine according to the present invention.
FIG. 2 is a front view schematically illustrating a structure of a single needle cam for raising and lowering the single needle shown in FIG. 1.
3 is an enlarged view illustrating a structure of the knitting needle illustrated in FIG. 1.
4 is a view illustrating a process of cutting the loop of the pile yarn by the sinker and the knife shown in FIG.
FIG. 5 is a partial perspective view illustrating a sinker and a knife disposed on the sinker dial shown in FIG. 1.
FIG. 6 is a bottom view illustrating a sinker and a knife cam portion formed on a bottom surface of the sinker cam of FIG. 1 and a sinker and a knife disposed therein. FIG.
FIG. 7 is a side view illustrating a long sinker (a) and a short sinker (b) in the sinker shown in FIG. 1.
8 is a side view showing the knife shown in FIG.

Hereinafter, the file cutting device of the circular knitting machine according to the present invention will be described by the accompanying drawings.

1 to 8, the circular knitting machine 1 proposed by the present invention has a cam holder ring (Cam holder ring) 2 capable of receiving a cylindrical knitted fabric knitted at the bottom.

In addition, a plurality of knitting needles 7 are disposed between the cylinder C and the single needle cam 9 at an upper portion of the cam holder ring 2 to sequentially reciprocate up and down by cam movement when the cylinder C is rotated. The single needle drive part 3 which exercise | moves is mounted.

The single needle drive unit (3) is a cylinder (Cylinder; C) rotatably provided on top of the cam holder ring (2); A cylinder cam box 5 disposed inside the cylinder C and provided with a single needle cam 9 on an outer surface thereof; It is disposed between the inner surface of the cylinder (C) and the cylinder cam box (5), the knitting needle 11 is guided by the knitting needle (9) includes a plurality of knitting needles (7) capable of raising and lowering. .

In this single needle drive unit, the cylinder C has a cylindrical shape and is rotatable. The cylinder cam box 5 is disposed inside the cylinder C, and a plurality of knitting needles 7 are disposed in the vertical direction between the cylinder cam box 5 and the cylinder C. FIG.

In addition, a single needle cam 9 is disposed on an outer surface of the cylinder cam box 5, and the single needle cam 9 is disposed to face the inner surface of the cylinder C.

At this time, the knitting needle butt 11 protruding from the knitting needle (7) is inserted into the upper and lower guide grooves (13, 15) formed concave on the surface of the knitting needle (9).

The upper guide groove 13 and the lower guide groove 15 have a shape repeated in the vertical direction on the surface of the single needle cam 9, as shown in FIG.

Therefore, when the cylinder C rotates, the needle needle Butt (11) is guided along the upper and lower directions in the state inserted into the upper and guide grooves (13, 15) of the needle needle cam (9) 7) This can be alternately descending along the vertical direction.

And, as shown in Figure 3, the needle 7 preferably means a latch (Latch) type of needle, the upper ring 17 is formed.

Therefore, when the knitting needle 7 is raised by the knitting needle 9, the ring 17 hangs the pile yarn f, and when the knitting needle 7 falls, the ring 17 is the pile yarn f. By dragging down can form a loop (L).

A sinker 20 for forming and holding a loop L on the cylinder 5 and a knife for cutting the loop L formed by the sinker 20; 22 are arranged respectively.

More specifically, as shown in FIGS. 4 and 5, the sinker 20 and the knife 22 may be aligned at right angles to the knitting needle 7 at the upper portion of the cylinder cam box 5. A rotatable sinker dial 24 and a sinker cam 26 disposed at an upper predetermined height of the sinker dial 24 to advance the sinker 20 and the knife 22 forward and backward are provided. It is provided.

In the sinker dial 24 having such a structure, a plurality of sinker grooves 28 in which the sinker 20 is accommodated is formed on the upper surface of the sinker dial 24 and parallel to the sinker groove 28. A plurality of knife grooves 30 in which the knife 22 is accommodated are formed.

At this time, the sinker groove 28 and the knife groove 30 form a set, and the set of sinker grooves 28 and the knife groove 30 are in the circumferential direction on the upper surface of the sinker dial 24. Are arranged continuously.

The sinker 20 and the knife 22 are disposed inside the sinker groove 28 and the knife groove 30, respectively. At this time, since the sinker butt 34 of the sinker 20 and the knife butt 38 of the knife 22 are inserted into the sinker cam 26, when the sinker dial 24 rotates, the sinker 20 is rotated. ) And the knife 22 can be advanced back and forth.

As shown in FIG. 6, the sinker cam 26 is formed along the circumferential direction at the outer edge of the bottom surface to sink the sinker 20 forward and backward when the sinker dial 24 rotates. ; 42); It is formed in the circumferential direction on the inside of the sinker cam portion 42, and includes a knife cam portion (Knife cam portion) (40) for moving forward and backward the knife 22 when the sinker dial 24 is rotated.

In the sinker cam 26 having such a structure, the sinker cam portion 42 includes forward and backward guide grooves 42a and 42b formed on the bottom surface of the sinker cam 26. The front and rear guide grooves 42a and 42b are repeatedly formed along the diagonal direction.

And, the sinker butt 34 is coupled to the previous and reverse guide grooves 42a and 42b. Therefore, when the sinker dial 24 rotates, the sinker butt 34 moves along the radial direction along the forward and backward guide grooves 42a and 42b, so that the sinker 20 can be advanced back and forth.

The knife cam portion 40 also has a shape similar to the sinker cam portion 42. That is, the knife cam portion 40 includes forward and backward guide grooves 40a and 40b formed on the bottom surface of the sinker cam 26. Then, the knife butt 38 is coupled to the previous and reverse guide grooves (40a, 40b).

Therefore, when the dial cam 26 rotates, the knife 22 can move forward and backward along the radial direction along the forward and backward guide grooves 40a and 40b.

On the other hand, the sinker 20, as shown in Figure 5, the catch (Catch; 25) for protruding the loop (L) at the front end, a sink cover that can be coupled to the sinker cam 26 at the rear end (Sinker Butt; 34) protrudes.

At this time, the sinking cover 34 has a plurality of sinkers 20 are formed differently.

Therefore, when the sinker dial 24 is rotated, the sink cover 34 moves forward and backward by a predetermined pitch along the forward and backward guide grooves 42a and 42b of the sinker cam 26, so that the loop L is rotated. ).

As the sinker 20 is illustrated in FIG. 7, the sinker 20 having various standards such as a long sinker 21 or a short sinker 23 may be selectively disposed.

Therefore, when the loop L weaves the long knit fabric, the long sinker 21 is attached. When the loop L weaves the short knit fabric, the short sinker 23 is mounted.

Meanwhile, as shown in FIG. 8, the knife 22 is disposed side by side at an adjacent position of the sinker 20, and cuts the loop L formed by the sinker 20.

The knife 22 is formed in the protruding end and the entry protrusion 32 that can easily enter the loop (L); A cutting blade 36 formed on the entry protrusion 32 to cut the loop L; A knife butt 38 is formed at the rear end and coupled to the dial cam 26 to move the knife 22 forward and backward.

The knife 22 having such a structure has a knife (22) when the sinker dial 24 rotates while the knife butt 38 is inserted into the forward and backward guide grooves 42a and 42b of the sinker cam 26. 22) moves forward and backward.

At this time, the sinker 20 forms a loop L and is supported by a constant tension.

Therefore, when the knife 22 enters the inside of the loop L, the cutting blade 36 cuts the loop L supported by the sinker 20.

As a result, by providing the sinker 20 and the knife 22 in one set, it is not necessary to provide a separate indentation roll for supporting the loop L, and the loop L can be cut only by the existing sinker 20. Can be.

Hereinafter, the operation of the circular knitting machine according to the present invention will be described in more detail with reference to the accompanying drawings.

As shown in Figure 1 to 8, when knitting using the circular knitting machine (1) proposed by the present invention, a conventional process by the lifting and lowering motion of the knitting needle (7) and the forward and backward movement of the sinker (20) You can proceed to knitting.

That is, when the cylinder 5 rotates, the plurality of needles 7 disposed between the cylinder cam box 5 and the cylinder C also rotate together. At this time, the knitting needle 11 of the plurality of knitting needles (7) is inserted into the upper and guide grooves (13, 15) of the knitting needle (9).

Therefore, since the knitting needle 7 is cam-driven by the rotation of the cylinder 5, the up and down is repeated.

As a result, a plurality of knitting needles 7 can be raised and lowered alternately along the vertical direction. And, the upper end of the knitting needle (7) is formed with a ring (17).

Therefore, when the knitting needle 7 is raised by the knitting needle 9, the ring 17 hangs the pile yarn f, and when the knitting needle 7 descends, the ring pulls down the pile yarn f. As a result, a new loop is formed, and the new nose is passed through the old loop, and the old nose is left in the knitting needle (7) through the nose separated from the knitting needle (17). The nose is knitted.

Then, when the knitting needle 7 rises again, the knitting proceeds through a knitting cycle in which the new nose is separated from the ring 17 and falls on the trunk of the knitting needle 7.

On the other hand, the sinker 20 supports the pile yarn (f) to form a loop (L). That is, when the sinker dial 24 is rotated while the sinker butt 34 is inserted into the forward and backward guide grooves 42a and 42b of the sinker cam portion 42, the sinker 20 moves forward and backward so that the pile yarn ( The loop L may be formed by supporting the f) at a predetermined height. At this time, the sinker 20 supports the loop L with a constant tension.

In this state, the knife 22 arranged in the adjacent position of the sinker 20 moves forward to cut the loop L of the pile yarn f.

That is, when the sinker dial 24 rotates while the butt 38 of the knife 22 is coupled to the forward and backward guide grooves 40a and 40b of the knife cam portion 40, the butt 38 is the guide groove ( Advance along 40a, 40b).

Therefore, the knife 22 can advance into the loop L formed by the sinker 20 by advancing, and can cut the loop L by the cutting blade 36. At this time, since the loop L is pulled tightly by a constant tension, it may be easily cut by the knife 22.

After the cut of the loop L, the knife 22 moves back and returns to its original position, and then the sinker 20 also moves backward and returns to its original position to achieve one cycle.

As a result, since the sinker 20 and the knife 22 are disposed adjacent to each other, the formation and cutting of the loop L may be performed even if the indentation wheel is omitted.

In addition, the long sinker 21 and the short sinker 23 may be selectively applied according to the height of the loop L. FIG.

1: circular knitting machine 2: cam holder ring
5: cylinder cambox 7: single needle
9: single hand cam 20: sinker
22: knife 14: cylinder
24: Sinker Dial 26: Sinker Cam

Claims (5)

A plurality of needles disposed between the cylinder and the needle needle cam, the needle needle driving unit configured to vertically reciprocate by cam movement during rotation of the cylinder;
A sinker dial rotatably disposed on an upper portion of the cylinder and having a sinker groove and a knife groove formed on an upper surface thereof to accommodate the sinker and the knife;
A sinker cam disposed at an upper portion of the sinker dial and having a guide groove formed at a bottom thereof so that the butts of the sinker and the knife are inserted and guided;
A sinker having a lower portion inserted into a sinker groove of the sinker dial and an upper portion inserted into a guide groove formed on a bottom surface of the sinker cam, thereby forming a loop by advancing back and forth by cam motion when the sinker dial is rotated; And
It is arranged side by side adjacent to the sinker, the lower portion is inserted into the knife groove of the sinker dial, the upper portion is inserted into the guide groove formed on the bottom surface of the sinker cam, it is possible to move forward and backward by the cam movement when the sinker dial is rotated. Circular knitting machine including a knife. The method of claim 1,
The single needle drive unit and a cylinder rotatably provided on the upper portion of the frame;
A cylinder cam box disposed inside the cylinder and provided with a single needle cam on an outer surface thereof;
And a plurality of knitting needles disposed between the inner surface of the cylinder and the cylinder cam box, and having a butt guided by the knitting needle cam. The method of claim 1,
The sinker cam has a forward and backward guide groove repeatedly formed along the circumferential direction at the outer edge of the bottom surface, and the sinker cam unit for advancing the sinker forward and backward when the sinker dial is rotated by inserting the butt of the sinker into the forward and backward guide groove. Wow;
The front and rear guide grooves are repeatedly formed in the sinker cam portion along the circumferential direction, and the knife cam portion moves forward and backward the knife when the sinker dial is rotated by inserting the butt of the knife into the forward and backward guide grooves. Circular knitting machine. The method of claim 3,
The knife has a protrusion formed at a tip thereof to easily enter the loop; A cutting blade formed on the entry protrusion and cutting the loop by having an inclined shape in an opposite direction of the loop; And a knife butt protruding from the rear end and coupled to the forward and backward guide groove of the dial cam. The method of claim 1, wherein the knife comprises: a long sinker for forming a long loop; Circular knitting machine, characterized in that it can optionally comprise a short sinker for forming a short loop.

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