KR102364998B1 - Mask string manufacturing apparatus - Google Patents

Abstract

The present invention relates to a mask strap manufacturing apparatus capable of maximally increasing the amount of mask straps stacked in each compartment space of a strap storage box. According to the present invention, the mask strap manufacturing apparatus comprises: a frame arranged lengthily in the longitudinal direction, having both open sides, and having an empty inner space; a rotation shaft installed in the middle of the left and right directions of the inner lower part of the frame to rotate in the longitudinal direction; a plurality of seesaw plates connecting and fixing each lower center to the rotation shaft to be installed in the longitudinal direction and allowing at least one strap storage box having a plurality of compartment spaces partitioned by a plurality of horizontal partition plates to be accommodated on each upper part; a seesaw operation unit connected to one side of the foremost seesaw plate to perform a seesaw operation of the seesaw plates around the rotation shaft by operation of one motor; a strap manufacturing and supplying unit provided on the upper part of the frame, manufacturing a plurality of mask straps by weaving first and second yarns, and supplying the plurality of manufactured mask straps from one side or both sides to the center of the lower part at front and rear intervals; both side vertical rolls disposed on both sides of the upper center of the strap storage box to be connected to the frame, and rotated to allow circumferential surfaces to come in close contact with each other by a motor rotation means, so that the mask straps supplied from the strap manufacturing and supplying unit at the front and rear interval are passed to the lower part between the vertical rolls to be stacked and stored in each compartment space of the strap storage box performing the seesaw operation without being tangled; and a control unit controlling the seesaw operation unit, the strap manufacturing and supplying unit, and the motor rotating means.

Description

Mask string manufacturing apparatus

The present invention relates to a mask string manufacturing apparatus, and more particularly, to a mask string manufacturing apparatus capable of maximally increasing the stacking amount of the mask string in each partition space of the string storage box.

In general, the mask string is connected to the upper and lower ends of both ends of the mask and hung on the ear, and the mask string is manufactured by mixing nylon stretch yarn and spantex yarn to have elasticity.

And the mask string is manufactured as a long string in the mask string manufacturing apparatus and loaded into the packaging box, and then the long string of the mask string loaded in the packaging box is pulled out in the mask manufacturing process and cut to the required length for use.

However, in the process of withdrawing the long string mask string loaded in the packaging box and using it from the packaging box as described above, a phenomenon in which the long string mask string becomes tangled frequently occurs, so that the tangled mask string loaded in one packaging box is removed. They all had the problem of being discarded.

Accordingly, in the prior art, as an example of a mask string manufacturing apparatus that prevents the mask string from being tangled in a packaging box, the "mask string manufacturing apparatus" of Republic of Korea Patent Registration No. 2191866 (hereinafter referred to as "conventional mask string manufacturing apparatus") is known. there is.

As shown in FIG. 8 , the conventional mask string manufacturing apparatus includes a frame 10 , a first yarn providing unit 20 supported on the frame 10 and providing a first yarn, and the frame 10 . and a second yarn providing unit 30 supported on and providing a second yarn. The first and second yarn providing units 20 and 30 are laminated to form a mask string by laminating the first and second yarns provided from each, and the lamination unit 40 is completed through It includes a accommodating part 50 for receiving the mask string and accommodating it.

The first yarn providing unit 20 includes a first roll 210 on which the first yarn is wound, and the first roll 210 to the laminating unit 40 so that the first yarn can be stably provided without tangling. It includes a transfer bracket 220 for supporting, and the second yarn providing unit 30 is stable from the second roll 310 to which the second yarn is wound, and from the second roll 310 to the laminating unit 40 . and a guide roll 320 for supporting the second yarn so that it can be provided without being tangled.

The receiving unit 50 includes a sliding cylinder 510 providing a reciprocating sliding force, a sliding support plate 520 configured on one side of the sliding cylinder 510 and sliding reciprocally by the reciprocating sliding force, and the sliding support plate ( It is seated on the upper portion of the 520 and reciprocally slides, and includes a storage basket 530 that allows the mask string provided from the lamination unit 40 to be stacked stably without being tangled in a stacking method therein.

However, in the conventional mask string manufacturing apparatus configured as described above, the storage basket is repeatedly moved horizontally in the direction of one side and the other side.

Therefore, in the conventional mask string manufacturing apparatus, the moment the storage basket is horizontally moved to one side and then momentarily stopped and moved to the other side, and the moment it is moved to the other side and then momentarily stopped and moved to one side, it is put into the storage basket and stacked. As inertia is generated in the mask string and the stacked mask strings are gathered in the center, the mask strings are stacked so that both sides of the inside of the storage basket are empty, so that the mask string in the storage basket is not completely filled. There was a problem in that the amount of stacking of the string decreased.

In addition, the conventional mask string manufacturing apparatus has a problem in that the manufacturing cost of the mask string manufacturing apparatus is high because a large number of sliding cylinders must be used as each sliding support plate is installed in the lower part of each storage basket to be reciprocally slid by a sliding cylinder. had

In addition, in the conventional mask string manufacturing apparatus, the distance between the first roll in which the first yarn is wound and the transfer bracket through which the first yarn passes is short, and the second roll in which the second yarn is wound and the guide roll through which the second yarn passes. As the distance between It also had a problem of being irregularly stacked and easily tangled.

Republic of Korea Patent Registration No. 2191866 "Mask strap manufacturing device"

Accordingly, the present invention has been devised to solve the various problems of the prior art,

It is an object of the present invention to stack the mask strings in a plurality of compartmental spaces formed in each string storage box while operating a seesaw operation so as not to be tangled, so that the string storage box is stacked in the process of the seesaw operation. By preventing the inertia gathering in the center of the string from occurring, it is to provide a mask string manufacturing apparatus that allows the mask string to be fully stacked in the center and both sides of each compartment space of the string storage box.

Another object of the present invention is to provide a mask string manufacturing apparatus that allows the mask string to be stacked without tangle in a plurality of compartment spaces formed in each string storage box while operating a plurality of string storage boxes using a single motor. is in providing.

Another object of the present invention is to provide a mask string manufacturing apparatus capable of simultaneously manufacturing a plurality of mask strings on both upper sides of the frame.

Another object of the present invention is to provide a plurality of guide shafts through which the yarn tension device and the yarn pass closely between the first and second yarns and the yarn reversing device to stretch the yarn taut and supply it to the yarn reversing device. An object of the present invention is to provide an apparatus for manufacturing a mask string to prevent the discharged mask string from being contracted.

A mask string manufacturing apparatus according to the present invention for achieving the above object is arranged long in the longitudinal direction and both sides are open and the inside of the frame is empty; a rotation shaft installed to be rotatable in the longitudinal direction in the middle of the left and right directions of the inner lower part of the frame; a plurality of seesaw plates each having a lower center connected and fixed to the rotation shaft and installed in the longitudinal direction, and at least one string storage bin having a plurality of partition spaces partitioned by a plurality of horizontal partition plates at each upper portion thereof; a seesaw operation driving unit connected to one side of the seesaw plate positioned at the front and performing seesaw operation of the seesaw plates around the rotation axis by the operation of one motor; a string manufacturing supply unit provided on the upper part of the frame, preparing a plurality of mask strings by reversing the first and second yarns, and supplying the manufactured plurality of mask strings from one side or both sides to the center of the lower part at a front and rear interval; It is provided to be connected to the frame on both sides of the upper center of the string storage box, and the circumferential surfaces are rotated in close contact with each other by a motor rotation means to pass the mask strings supplied at intervals before and after from the string manufacturing supply unit to the lower part between them. Il, the other vertical roll and the other side of the seesaw operation to stack storage in each compartment space portion of the string storage box so as not to be tangled; The seesaw operation driving unit, string manufacturing supply unit, a control unit for controlling the motor rotation means; characterized in that it comprises a.

In the present invention configured as described above, the mask string is laminated in a plurality of compartment spaces formed in each string storage box while the seesaw operation is performed, so that the string storage box is stacked in the process of the seesaw operation. By preventing the inertia gathering in the center of the mask string from being generated, by stacking the mask strings on the center and on both sides of each compartment of the string storage box, the volume corresponding to the volume of each compartment of the string storage box There is an effect of maximally increasing the amount of mask straps stacked by stacking positive mask straps.

In addition, the present invention is a seesaw operation driving unit for seesaw operation of the string storage box by stacking the mask strings in a plurality of compartment spaces formed in each string storage box without tangling while seesaw operation of a plurality of string storage boxes using a single motor There is an effect that can reduce the manufacturing cost of the seesaw operation driving part of the string storage box by reducing the number of motors to one.

In addition, the present invention has the effect of improving the productivity of the mask string by simultaneously manufacturing a plurality of mask strings on both upper sides of the frame.

In addition, the present invention is provided with a plurality of guide shafts through which the yarn tension device and the yarn pass closely between the first and second yarns and the yarn reversing device, so that the yarn is taut and supplied to the yarn reversing device. By preventing the mask string from being contracted, there is also an effect of preventing tangling during lamination caused by the contraction of the manufactured mask string.

1 is a front view showing an apparatus for manufacturing a mask string according to the present invention.
Figure 2 is a partially omitted left side view showing the mask string manufacturing apparatus according to the present invention.
Figure 3 is a cross-sectional view taken along line AA of Figure 2;
4 is an enlarged view of part B of FIG. 2 ;
5 is an enlarged view of part C of FIG. 3;
6 is an enlarged view of part D of FIG. 3 ;
7 is a schematic cross-sectional view showing the operating state of the mask string manufacturing apparatus according to the present invention.
8 shows a conventional mask string manufacturing apparatus,
8A is a schematic configuration diagram,
8B is a perspective view.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, it should be understood that the present invention may be embodied in many different forms and is not limited to the described embodiments.

1 is a front view showing an apparatus for manufacturing a mask string according to the present invention, FIG. 2 is a partially omitted left side view showing an apparatus for manufacturing a mask string according to the present invention, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 is an enlarged view of part B, FIG. 5 is an enlarged view of part C of FIG. 3, FIG. 6 is an enlarged view of part D of FIG. It is a cross section.

As shown in the figure, the mask string manufacturing apparatus according to the present invention uses a single motor to operate a plurality of string storage boxes 10 while performing a seesaw operation in a plurality of compartment spaces formed in each string storage box 10. The mask string 40 can be stacked without tangling, and the frame (1), the rotating shaft (2), the seesaw plate (3), the seesaw operation driving unit (4), the string manufacturing supply unit (5), one and the other side vertical roll ( 6a)(6b), including a control unit.

The frame 1 is arranged long in the longitudinal direction, and both sides are open and the inside is empty so that the string storage container 10 to be described later can be accommodated and taken out of the frame 1 .

The rotating shaft 2 is installed so as to be rotatably long in the longitudinal direction through a plurality of bearing brackets in the middle of the left and right directions of the inner lower portion of the frame 1 .

The seesaw plate 3 is arranged in a plurality in the longitudinal direction on the upper portion of the rotation shaft 2, each of which has a lower center connected and fixed to the rotation shaft 2, and a plurality of them are installed in the longitudinal direction, so that a plurality of the rotation shaft 2 It is provided to perform a seesaw operation to be linked to the center. And the upper portion of each seesaw plate (3) at least one or more string storage box 10 having a plurality of partition space (10a) partitioned by a plurality of horizontal partition plate is to be accommodated. In addition, it is preferable that a separation preventing protrusion protruding upwardly is further formed around the upper periphery of each of the seesaw plates 3 to prevent separation of the string storage container 10 .

In addition, the seesaw operation driving unit 4 is connected to one side of the seesaw plate 3 positioned at the front of the seesaw plates 3 and moves the seesaw plates 3 to the rotation shaft 2 by the operation of one motor. ) plays a role in the seesaw operation.

A first motor ( 41) and an operating link 42 connected to one side of the seesaw plate 3 with one end eccentrically connected to the rotating plate 11 by a hinge shaft (H) and the other end being located at the frontmost side by a hinge shaft (H) will include

Therefore, in the seesaw operation driving unit 4 , the angle of the operation link 42 is changed by the rotation operation of one first motor 41 and the hinge shaft H located at one and the other ends of the operation link 42 . As the height of the seesaw plates 3 is changed, the seesaw plate 3 performs a seesaw operation around the rotation shaft 2, so that the string storage containers 10 accommodated in the upper part of the seesaw plates 3 rotate the rotation shaft 2 . It is a seesaw motion based on the center.

In addition, the string manufacturing supply unit 5 is provided on the upper portion of the frame 1, the first yarn (nylon stretch yarn) and the second yarn (spantex yarn) to prepare and manufacture a plurality of mask strings 40 By supplying a plurality of mask strings 40 from one side or both sides to the center of the lower part at an interval of front and rear, the upper plate 51, the upper guide shaft 52, the middle guide shaft 53, the lower guide shaft 55 , including a string manufacturing means (56).

The upper plate 51 is connected to the frame 1 on the upper part of the frame 1 and is provided horizontally to be spaced apart from each other. And the upper guide shaft 52 is installed in the longitudinal direction on both sides of the upper plate 51, a spring (not shown) for adjusting the passing position of the first yarn 20 and the second yarn 30 is wound on the outside. it will be gone

The intermediate guide shaft 53 is installed in the longitudinal direction to be connected to the lower portion of the upper plate 51 at the lower inner side of each of the upper guide shaft 52 . And the vertical frame 54 is provided in the longitudinal direction at the lower portion of the intermediate guide shaft 53, which is both upper sides of the frame (1). In addition, the lower guide shaft 55 is to be installed in the longitudinal direction on the outside of each of the vertical frame (54).

And the string manufacturing means 56 is provided with a plurality of front and rear intervals on one side or both sides of the upper portion of the frame 1, each of which is connected to the yarn reverse sound driving means 591 in each of the first and second yarns 20 (30) to prepare a mask string 40, discharge it to the lower part, and supply it between the one and the other vertical rolls 6a and 6b, the first yarn supply part 57, the second yarn supply part 58 , including a yarn reverse sound device 59 .

The first yarn supply part 57 is installed on the upper part of the upper plate 51 , and includes a first yarn bobbin 571 on which the first yarn 20 installed on the upper plate 51 is wound, and the upper plate 51 . ) is provided in connection with the upper plate 51 on the upper side of the known first yarn tension device 572 that allows the first yarn 20 to pass through bent at right angles and keeps the first yarn 20 taut. includes And the first yarn 20 supplied to the lower part from the first yarn tensioning device 572 is in close contact with the outer surface of the upper guide shaft 52 and is bent to the inner lower side, and then the outer side of the intermediate guide shaft 53 . It is in close contact with the side and is bent downward and supplied to the yarn reverse sound device 59 .

The second yarn supply unit 58 is installed on the upper part of the upper plate 51 , and includes a second yarn bobbin 581 on which the second yarn 30 installed on the upper plate 51 is wound, and the upper plate ( 51) provided to be connected to the upper plate 51 on the upper side of the guide roll or guide rod for drawing out the second yarn 30 wound on the second yarn bobbin 581 and bending it to move from the lower part to the upper part, and , A known second yarn provided in connection with the upper plate 51 on the upper side of the upper plate 51 and passing the second yarn 30 bent at a right angle and holding the second yarn 30 taut. A tension device 582 is included. In addition, the second yarn 30 supplied to the lower part from the second yarn tension device 582 is in close contact with the outer surface of the upper guide shaft 52 , is bent to the inner lower side, and then outside the intermediate guide shaft 53 . It is in close contact with the side and is bent downward and supplied to the yarn reverse sound device 59 .

As the yarn reverse sound device 59 is installed in the vertical frame 54 and connected to the yarn reverse sound driving means 591 and rotates, the first and second yarn supply units to the inside by the lifting operation of several knitting needles The supplied first and second yarns are passed while pulling, and the mask string 40 is manufactured and discharged to the lower side. As such a yarn reversing device 59 is already known, a detailed description thereof will be omitted. And the mask string 40 discharged from the yarn reverse sound device 59 is closely bent to the outer surface of the lower guide shaft 55 and supplied between the one and the other vertical rolls 6a and 6b.

The yarn reverse sound driving means 591 is installed in the upper center of the frame 1 in the longitudinal direction to be connected to the frame 1 and is connected to a third motor 593 connected to a control unit to be described later and rotated by a driving rotation shaft 592 ), and the circumference of the driving rotating shaft 592 and connected to a known rotating body receiving the power of each of the yarn reversing devices 59 to transmit the rotational force of the driving rotating shaft 592 to the rotation of each yarn reversing device 59 It can be configured to include a number of belts 594 conveying the whole.

Therefore, the present invention includes a yarn tension device and a plurality of guide shafts through which the yarn closely passes between the first and second yarn bobbins 571 and 581 and the yarn reversing device 59 to stretch the yarn taut and the yarn reversing device ( 59), by preventing the mask string 40 discharged from the yarn reverse sound device 59 from shrinking, the advantage of preventing tangle during lamination caused by the shrinkage of the manufactured mask string 40 is there is.

In addition, the one and the other side vertical rolls (6a, 6b) are provided to be connected to the frame (1) on both sides of the upper center of the string storage container (10), the peripheral surfaces of each other by the motor rotating means (61) Each partition space portion 10a of the string storage container 10 that rotates closely and passes the mask strings 40 supplied at a front and rear interval from the string manufacturing supply unit 5 to the lower portion between them to perform the seesaw operation. ) serves to stack and store it so that it does not get tangled.

The motor rotating means 61 includes a second motor 611 connected to the rotation shaft 2 of the other vertical roll 6b and connected to a control unit to be described later, and each of the one and the other vertical rolls 6a and 6b. It will include a chain (not shown) connecting the rotation shaft 2 to be rotated in opposite directions.

In addition, the control unit (not shown) is to serve to control the seesaw operation driving unit (4), string manufacturing supply unit (5), and the motor rotating means (61).

Hereinafter, the state of use of the mask string manufacturing apparatus according to the present invention configured as described above will be described as follows.

1 to 7, in the case of manufacturing the mask string 40 using the mask string manufacturing apparatus according to the present invention, first, A plurality of string storage containers (10) are accommodated in the upper part.

Then, through the operation control of the control unit, the first motor 41 of the seesaw operation driving unit 4 and the second motor 611 of the motor rotating means 61 and the third motor 593 of the string manufacturing supply unit 5 are ) is activated.

Then, by the operation of the first motor 41 , each of the string storage bins 10 performs a seesaw operation around the rotation shaft 2 .

And when the first and second yarns 20 and 30 are reversed in each string manufacturing means 56 by the operation of the third motor 593 and discharged from each string manufacturing means 56, the second A plurality of mask strings 40 manufactured in each string manufacturing means 56 by the operation of the motor 611 pass between the one and the other vertical rolls 6a and 6b to perform the seesaw operation. By being stacked and stored without tangle in a plurality of compartment space portions 10a provided in a plurality of string storage containers 10, the mask string 40 can be continuously manufactured.

Therefore, the present invention stacks the mask string in a plurality of compartment space portions (10a) formed in each string storage box 10 while operating the seesaw operation of the plurality of string storage containers 10 so as not to be tangled, and the string storage box (10) In the process of this seesaw operation, as the inertia that gathers to the center of the stacked mask string is prevented from occurring, the mask string is completely filled in both the center and both sides of each compartment 10a of the string storage box 10 . By laminating, it is a useful invention that can maximize the stacking amount of the mask string 40 by stacking the mask string 40 in an amount corresponding to the volume of each compartment 10a of the string storage box 10. .

In addition, the present invention uses a single first motor 41 to operate a plurality of string storage containers 10 while seesaw operation of the mask string 40 in a plurality of compartment spaces 10a formed in each string storage box 10 ), the number of motors of the seesaw operation driving unit 4 that operates the seesaw operation of the string storage container 10 can be reduced to a minimum by stacking them so as not to be tangled. It is a useful invention.

In addition, the present invention is a useful invention that can improve the productivity of the mask string 40 by manufacturing a plurality of mask strings 40 at the same time on both upper sides of the frame (1).

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention defined by the limits of the following claims.

On the other hand, although specific embodiments have been described in the detailed description of the present invention, it will be apparent to those of ordinary skill in the art that various modifications are possible without departing from the scope of the present invention.

1: frame
2: axis of rotation
3: seesaw plate
4: seesaw operation driving unit
41: first motor
42 : working link
5: String manufacturing supply part
51: top plate
52: upper guide shaft
53: intermediate guide shaft
54: bell-shaped frame
55: lower guide shaft
56: string manufacturing means
57: first yarn supply unit
58: second yarn supply unit
59: yarn reverse sound device
6a: one side vertical roll, 6b: the other side vertical roll
61: motor rotation means
10: string storage box
10a: compartment space part
20: first yarn
30: second yarn
40: mask string

Claims (8)

a frame arranged long in the longitudinal direction and having both sides open and empty inside;
a rotation shaft installed to be rotatable in the longitudinal direction in the middle of the left and right directions of the inner lower portion of the frame;
a plurality of seesaw plates each having a lower center connected and fixed to the rotation shaft and installed in the longitudinal direction, and at least one string storage bin having a plurality of partition spaces partitioned by a plurality of horizontal partition plates at each upper portion thereof;
a seesaw operation driving unit connected to one side of the seesaw plate positioned in the front and performing seesaw operation of the seesaw plates around the rotation axis by the operation of one motor;
a string manufacturing supply unit provided on the upper part of the frame, preparing a plurality of mask strings by reversing the first and second yarns, and supplying the manufactured plurality of mask strings from one side or both sides to the center of the lower part at a front and rear interval;
It is provided to be connected to the frame on both sides of the upper center of the string storage box, and the circumferential surfaces are rotated in close contact with each other by a motor rotation means to pass the mask strings supplied at an interval before and after from the string manufacturing supply unit to the lower part between them. One and the other vertical roll and stacked storage so as not to be tangled in each compartment space of the string storage box performing the seesaw operation;
Including; the seesaw operation driving unit, the string manufacturing supply unit, and a control unit for controlling the motor rotation means;
The seesaw operation driving unit
A first motor fixed to one side of the front frame of the frame and provided with a rotating shaft at the rear, the rotating plate being provided with the rotating shaft and connected to the control unit;
Mask string manufacturing apparatus, characterized in that it comprises an operating link connected to the hinge shaft at one end eccentrically connected to the rotating plate by a hinge shaft and the other end is connected to one side of the seesaw plate located in the front.
delete According to claim 1,
The motor rotating means
a second motor connected to the rotation shaft of the other vertical roll and connected to the control unit;
Mask string manufacturing apparatus, characterized in that it comprises a chain connecting each rotation shaft of the one and the other vertical roll to be rotated in opposite directions to each other.
4. The method of claim 1 or 3,
The string manufacturing supply unit
an upper plate provided horizontally to be spaced apart from the upper part of the frame;
An upper guide shaft installed in the longitudinal direction on both sides of the upper plate and having a spring wound on the outside for adjusting the passing positions of the first yarn and the second yarn;
an intermediate guide shaft installed in the longitudinal direction to be connected to the lower part of the upper plate inside the lower part of each of the upper guide shafts;
A vertical frame provided in the longitudinal direction at the lower part of the intermediate guide shaft, which is both upper sides of the frame,
A lower guide shaft installed in the longitudinal direction on the outside of each of the vertical frames,
It is provided on one side or both sides of the upper part of the frame with a front and rear spacing, and each is connected to a yarn reverse sound driving means to prepare a mask string by reversing the first and second yarns in each, and discharges it to the lower part and supplies it between the one and the other side vertical rolls Mask string manufacturing apparatus, characterized in that it comprises a plurality of string manufacturing means.
5. The method of claim 4,
Each of the string manufacturing means is
a first yarn supply unit and a second yarn supply unit installed on the upper portion of the upper plate;
As it is installed in the vertical frame and connected to the yarn reverse sound driving means and rotates, the first and second yarns supplied from the first and second yarn supply units are pulled and passed inside by the lifting operation of several knitting needles to pass through the mask Mask string manufacturing apparatus, characterized in that it comprises a yarn reverse sound device that manufactures a string reversely, discharges it to the lower part, and bends the discharged mask string to the outer surface of the lower guide shaft to supply it between the one and the other vertical rolls.
6. The method of claim 5,
The yarn reverse sound driving means is
a drive rotation shaft installed in the longitudinal direction to be connected to the frame in the upper center of the frame and connected to a third motor connected to the control unit to rotate;
Mask string manufacturing apparatus, characterized in that it comprises a plurality of belts connected to the periphery of the driving rotation shaft and the rotating body receiving the power of each of the yarn reversing device.
6. The method of claim 5,
The first yarn supply unit
A first yarn bobbin with a first yarn wound thereon installed on the upper plate;
A first yarn tension device provided to be connected to the upper plate on the upper side of the upper plate and to pass the first yarn bent at a right angle and keep the first yarn taut,
The first yarn supplied to the lower part from the first yarn tension device is in close contact with the outer surface of the upper guide shaft and bent to the inner lower side, and then is in close contact with the outer surface of the intermediate guide shaft and bent downward to be supplied to the yarn reverse sound device Mask string manufacturing apparatus, characterized in that.
7. The method of claim 6,
The second yarn supply unit
a second yarn bobbin in which a second yarn is wound, which is installed on the upper plate;
A guide roll or a guide rod provided to be connected to the upper plate on the upper side of the upper plate to take out the second yarn wound on the second yarn bobbin and bend it to move from the lower part to the upper part,
A second yarn tensioning device is provided on the upper side of the upper plate to be connected to the upper plate, to pass the second yarn bent at a right angle, and to keep the second yarn taut;
The second yarn supplied to the lower part from the second yarn tension device is in close contact with the outer surface of the upper guide shaft and bent to the inner lower side, and then is in close contact with the outer surface of the intermediate guide shaft and bent downward, and is supplied to the yarn reverse sound device Mask string manufacturing apparatus, characterized in that.

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