KR102347102B1 - Unwinder having tension controller and apparatus for manufacturing twised yarn - Google Patents

Abstract

An embodiment of the present invention includes a support substrate, a bobbin fixing unit rotatably disposed on the supporting substrate, and a tension control unit for controlling rotation of the bobbin fixing unit, wherein the bobbin fixing unit is disposed on the supporting substrate to rotate and a body part connected to the rotating part, wherein the tension control part has a fixed end disposed on the support substrate, a belt adjustment part having a guide groove, a head part inserted into the guide groove, a lever connected to the head part, and one end It is fixed to the fixed end, the other end provides a maritime device comprising a belt connected to the head portion.

Description

Maritime device and ply-twisted yarn manufacturing device having a tension control unit {UNWINDER HAVING TENSION CONTROLLER AND APPARATUS FOR MANUFACTURING TWISED YARN}

The present invention relates to a maritime device having a tension control unit and a ply-twisted yarn manufacturing apparatus including the same.

Tire cords, especially tire cords treated with adhesive, are widely used as reinforcing materials for rubber products such as tires, conveyor belts, V-belts, and hoses. Glue-treated tire cords are also referred to as "dip cords".

Recently, as the performance of automobiles is improved and road conditions are improved, the driving speed of automobiles is gradually increasing, so it is necessary to maintain stability and durability of tires even when driving at high speed. To this end, research on a tire cord used as a rubber reinforcing material for a tire is being actively conducted. Tire cords are classified according to parts and roles used, and can be broadly divided into carcass that supports the tire as a whole, a belt that supports load and prevents deformation due to high-speed driving, and a cap ply that prevents deformation of the belt.

Currently, nylon, polyester, rayon, aramid, etc. are used as materials for tire cords, and in particular, nylon and aramid are widely used.

In order to maximize the advantages of each of nylon and aramid and to compensate for the disadvantages, a tire cord using a ply-twisted yarn of a hybrid structure using nylon and aramid together has been developed. As a method of manufacturing a ply-twisted yarn using nylon and aramid, there is a method of ply-twisting a nylon lower-twisted yarn and an aramid lower-twisted yarn. However, in this case, due to twisting of the lower twisted yarn, secondary twisting such as ribbon twisting may occur in the lower twisted yarn during the untwisting process of the lower twisted yarn. Therefore, it is necessary to prevent secondary twisting of the lower twisted yarn during the manufacturing process of the ply-twisted yarn.

The present invention is to solve the limitations and problems of the related art as described above.

An embodiment of the present invention is to provide a ply-twisted yarn manufacturing apparatus including a ply-twisted yarn manufacturing apparatus and a ply-twisted yarn manufacturing apparatus that can prevent secondary twisting of the lower-twisted yarn in the course of the lower-twisted yarn de-twisting process.

Another embodiment of the present invention is to provide a maritime device capable of preventing secondary twisting of the lower-twisted yarn by providing a tension to the lower-twisted yarn in the course of the lower-twisted yarn’s unwinding process, including a tension control unit.

Another embodiment of the present invention is to provide a method for manufacturing a ply-twisted yarn using such a spinning device and a ply-twisted yarn manufacturing device.

In addition to the above-mentioned aspects of the present invention, other features and advantages of the present invention will be described below or will be clearly understood by those of ordinary skill in the art from such description.

In order to solve this problem, an embodiment of the present invention includes a support substrate, a bobbin fixing part rotatably disposed on the support substrate, and a tension control unit for controlling rotation of the bobbin fixing part, wherein the bobbin fixing part a rotating unit disposed on the support substrate to rotate and a body connected to the rotating unit, wherein the tension control unit includes a fixed end disposed on the supporting substrate, a belt adjustment unit having a guide groove, a head inserted into the guide groove, and the head A lever connected to the unit and a belt having one end fixed to the fixed end, and the other end connected to the head unit; provides a maritime device comprising a.

The belt is in contact with the rotating part.

The rotating part has a belt accommodating groove, and the belt is disposed in the belt accommodating groove.

The lever includes a handle and a rod extending from the handle and connected to the head part, and at least a portion of the rod is inserted into the guide groove.

The belt adjustment part has the rod entry/exit hole, and the rod entry/exit hole is connected to the guide groove.

The rod entry/exit hole has a threaded groove, and the rod has a threaded thread.

The disengagement device further includes a belt connection portion between the head portion and the belt.

Another embodiment of the present invention is a first maritime device in which a first bobbin having a first yarn wound thereon is mounted, a second maritime device in which a second bobbin in which a second yarn is wound is mounted, and the first maritime yarn in the first maritime device and a ply-twisting device for ply-twisting the first yarn that has been removed and the second yarn that has been spun into the second yarn device, wherein the first yarn device is the above-described spinning device.

The axial direction of the first maritime device and the axial direction of the second maritime device intersect each other.

The first yarn is unwound while the bobbin fixing part of the first unwinding device is rotated.

Another embodiment of the present invention includes the steps of spinning a first yarn in a first bobbin mounted on a first spinning device, spinning a second yarn on a second bobbin mounted on a second spinning device, and the second and plies-twisting a first yarn and the second yarn, wherein the first yarn-twisting device is the aforementioned yarn-twisting device.

The axial direction of the first maritime device and the axial direction of the second maritime device intersect each other.

The first yarn is unwound while the bobbin fixing part of the first unwinding device is rotated.

The method of manufacturing the ply-twisted yarn includes adjusting the tension applied to the first yarn by manipulating the lever to adjust the pressure applied to the bobbin fixing part by the belt.

The first yarn is in a lower twisted state.

The second yarn is untwisted.

The first yarn is nylon and the second yarn is aramid.

The spinning apparatus according to an embodiment of the present invention includes a tension control unit, and by applying a tension to the lower twisted yarn in the course of the lowering twisted yarn, it is possible to prevent secondary twisting of the lower twisted yarn. In addition, since the ply-twisted yarn manufacturing apparatus according to an embodiment of the present invention includes a dismantling device having a tension control unit, the tension of the lower-twisted yarn can be adjusted. Accordingly, the ply-twisting is performed in a state in which a uniform tension is applied to the lower-twisted yarn, so that the quality of the ply-twisted yarn can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which serve to understand the invention and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, explain the principles of the invention.
1 is a perspective view of a maritime device according to an embodiment of the present invention.
FIG. 2 is a detailed view of the tension control unit of FIG. 1 .
3 is a cross-sectional view illustrating a state in which the bobbin is mounted to the bobbin fixing unit.
4 is a schematic diagram of an apparatus for manufacturing a ply-twisted yarn according to another embodiment of the present invention.
5 is a cross-sectional view of a state in which the first bobbin is mounted to the first maritime device.
6 is a schematic diagram of a secondary twist occurring in a first yarn;

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

It will be apparent to those skilled in the art that various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention. Accordingly, the present invention includes all modifications and variations that come within the scope of the claimed invention and their equivalents.

Since the shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, the present invention is not limited by the matters shown in the drawings. Throughout the specification, like elements may be referred to by like reference numerals.

When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless the expression 'only' is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise. In addition, in interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, unless the expression 'directly' is used, one or more other parts may be positioned between the two parts.

In the case of a description of a temporal relationship, for example, 'immediately' or 'directly' when a temporal relationship is described with 'after', 'following', 'after', 'before', etc. It may include cases that are not continuous unless the expression "

The term “at least one” should be understood to include all possible combinations from one or more related items.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments may be implemented independently of each other or may be implemented together in a related relationship. may be

1 is a perspective view of a maritime device 100 according to an embodiment of the present invention, Figure 2 is a detailed view of the tension control unit 150 of FIG. 3 is a cross-sectional view illustrating a state in which the bobbin 140 is mounted to the bobbin fixing unit 120 .

The unwinder 100 according to an embodiment of the present invention is a device used to unwind the yarn 10 wound around the bobbin 140 (see FIG. 3 ).

The maritime device 100 according to an embodiment of the present invention controls the rotation of the support substrate 110 , the bobbin fixing unit 120 and the bobbin fixing unit 120 rotatably disposed on the supporting substrate 110 . and a tension control unit 150 .

The bobbin fixing unit 120 includes a rotating unit 125 disposed on the supporting substrate 110 to rotate and a body unit 121 connected to the rotating unit 125 .

There is no particular limitation on a method in which the rotating part 125 is disposed on the support substrate 110 . For example, the rotating part 125 may be fixed to the support substrate 110 by a bearing (not shown) and rotate. Specifically, a rotation shaft (not shown) is disposed on the support substrate 110 , and the rotation unit 125 is connected to the rotation shaft by a bearing to rotate.

The body portion 121 may have a cylindrical or cylindrical shape. The bobbin 140 is coupled to and fixed to the body portion 121 . More specifically, the body portion 121 may be inserted into the bobbin 140 . In order for the bobbin 140 to be stably fixed to the body part 121 , the body part 121 may have a pattern.

The tension control unit 150 includes a fixed end 151 disposed on the support substrate 110 , a belt adjustment unit 154 having a guide groove 155 , a head unit 156 inserted into the guide groove 155 , and a head unit. It includes a lever 157 connected to 156 and a belt 152 having one end fixed to the fixed end 151 and the other end connected to the head unit 156 .

The belt 152 is in contact with the rotating part 125 .

By adjusting the lever 157, the head 156 moves in the guide groove 155, and accordingly, the belt 152 fixed to the fixed end 151 applies to the rotating portion 125 of the bobbin fixing unit 120. The pressure may vary. According to this pressure difference, the friction force between the belt 152 and the rotating part 125 is adjusted, so that the rotation of the rotating part 125 can be controlled.

According to an embodiment of the present invention, the bobbin 140 is mounted on the body portion 121 connected to the rotating portion 125 . At this time, when the yarn 10 wound around the bobbin 140 is pulled, the yarn 10 is unwound while the bobbin 140 and the rotating part 125 rotate. At this time, as the pressure applied by the belt 152 to the rotating part 125 is adjusted, the pulling force of the yarn 10 to rotate the bobbin 140 and the rotating part 125 is changed, and accordingly, the The applied tension can be adjusted.

The type of the belt 152 is not particularly limited. The belt 152 may be made of metal or an alloy of metals, or may be made of rubber.

According to an embodiment of the present invention, the rotating part 125 may have a belt accommodating groove 127 , and the belt 152 may be disposed in the belt accommodating groove 127 . Since the belt 152 is disposed in the belt receiving groove 127 , the belt 152 may efficiently apply pressure to the rotating part 125 .

The lever 157 includes a handle 158 and a rod 159 extending from the handle 158 and connected to the head portion 156 . At least a portion of the rod 159 is inserted into the guide groove 155 .

In FIG. 1 , when the lever 157 moves to the right of the drawing, the rod 159 enters the inside of the guide groove 155 (the right direction in the drawing), and the head 156 moves to the right of the drawing. In this case, the belt 152 is tightened, and the pressure applied by the belt 152 to the rotating part 125 increases. Accordingly, a relatively large amount of force is required to rotate the rotating part 125 , and the tension applied to the yarn 10 to unwind the yarn 10 increases.

Conversely, when the lever 157 moves to the left of the drawing, a part of the rod 159 comes out of the guide groove 155 , and the head 156 moves to the left of the drawing. In this case, the belt 152 is loosened, and the pressure applied by the belt 152 to the rotating part 125 is weakened. Accordingly, relatively little force is required to rotate the rotating part 125 , and the tension applied to the yarn 10 to unwind the yarn 10 is reduced.

1 and 2 , the belt adjusting unit 154 has a rod entry/exit hole H. The rod entry/exit hole H is connected to the guide groove 155 . A portion of the rod 159 may reciprocate in and out of the guide groove 155 through the rod entry/exit hole H.

According to an embodiment of the present invention, the rod entry and exit hole (H) may have a screw groove, and the rod 159 may have a screw thread. By screwing the rod 159 and the rod entry/exit hole H, a portion of the rod 159 can freely enter and exit the guide groove 155 , and the rod 159 can be fixed at a necessary position.

Referring to FIGS. 1 and 2 , the maritime device 100 may further include a belt connection part 153 between the head part 156 and the belt 152 . One end of the belt connection part 153 may be connected to the belt 152 , and the other end may be connected to the head part 156 . The belt 152 is stably fixed to the head part 156 by the belt connection part 153 and can move flexibly.

4 is a schematic view of a ply-twisted yarn manufacturing apparatus 200 according to another embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating a state in which the first bobbin 141 is mounted to the first seaming apparatus 101 .

In the ply-twisted yarn manufacturing apparatus 200 according to another embodiment of the present invention, the first spinning device 101 and the second yarn 21 on which the first bobbin 141 on which the first yarn 11 is wound is mounted. The second yarn 201 and the first yarn 11 spun in the first disengagement device 101 and the second yarn spun on the second disengagement device 201 ( 21), and a ply-twisting device 301 for ply-twisting.

As the first maritime device 101, the maritime device 100 shown in FIGS. 1 and 2 may be used. Specifically, the first spinning device 101 of the ply-twisted yarn manufacturing apparatus 200 according to another embodiment of the present invention includes a support substrate 110 and a bobbin fixing unit 120 rotatably disposed on the support substrate 110 . ) and a tension control unit 150 for controlling the rotation of the bobbin fixing unit 120 .

Referring to FIG. 5 , the bobbin fixing unit 120 includes a rotating unit 125 disposed on the supporting substrate 110 to rotate and a body unit 121 connected to the rotating unit 125 .

The tension control unit 150 includes a fixed end 151 disposed on the support substrate 110 , a belt adjustment unit 154 having a guide groove 155 , a head unit 156 inserted into the guide groove 155 , and a head unit. It includes a lever 157 connected to 156 and a belt 152 having one end fixed to the fixed end 151 and the other end connected to the head unit 156 .

The belt 152 is in contact with the rotating part 125 . By adjusting the lever 157, the head 156 moves in the guide groove 155, and accordingly, the belt 152 fixed to the fixed end 151 applies to the rotating portion 125 of the bobbin fixing unit 120. The pressure can be adjusted. By this pressure adjustment, the rotation of the rotating part 125 can be controlled.

According to an embodiment of the present invention, the rotating part 125 may have a belt accommodating groove 127 , and the belt 152 may be disposed in the belt accommodating groove 127 . Since the belt 152 is disposed in the belt receiving groove 127 , the belt 152 may efficiently apply pressure to the rotating part 125 .

The lever 157 has a handle 158 and a rod 159 extending from the handle 158 and connected to a head portion 156 . At least a portion of the rod 159 is inserted into the guide groove 155 .

Referring to FIG. 5 , the first bobbin 141 is fixed to the bobbin fixing part 120 as shown in FIG. 3 . As shown in FIG. 5 , the first bobbin 141 is mounted on the body 121 connected to the rotating part 125 . At this time, when the first yarn 11 wound around the first bobbin 141 is pulled, the first yarn 11 is unwound while the first bobbin 141 and the rotating part 125 rotate. At this time, as the pressure applied by the belt 152 to the rotating part 125 is adjusted, the pulling force of the first yarn 11 to rotate the first bobbin 141 and the rotating part 125 is changed, and accordingly, the second 1 The tension applied to the yarn 11 can be adjusted.

According to another embodiment of the present invention, the axial direction (ax1) of the first maritime device 101 and the axial direction (ax2) of the second maritime device 201 cross each other. Referring to FIG. 4 , the axial direction ax1 of the first maritime device 101 is a horizontal direction of the drawing, and the axial direction ax2 of the second maritime device 201 is a vertical direction of the drawing. For example, the first bobbin 141 mounted on the first maritime device 101 is disposed in a horizontal direction on the ground, and the second bobbin 241 mounted on the second maritime device 201 is vertical to the ground. can be placed as

At this time, the first yarn 11 is released while the bobbin fixing part 120 of the first dismantling device 101 is rotated. Tension must be applied to the first yarn 11 in order to rotate the bobbin fixing part 120 . Accordingly, when the bobbin fixing part 120 rotates, a tension is applied to the first yarn 11 .

There is no particular limitation on the second maritime device 201 . The second disengagement device 201 may include a second bobbin fixing part 221 . The second bobbin fixing part may be fixed to the support substrate 110 .

The second bobbin 241 is mounted on the second bobbin fixing part 221 . The second yarn 21 is unwound in the second bobbin 241 . Referring to FIG. 4 , the second yarn 21 may be disengaged from the second bobbin 241 in the vertical direction even when the second bobbin 241 does not rotate. Accordingly, when the second yarn 21 is unwound, no tension is applied to the second yarn 21 or a negligible amount of tension can be applied.

The ply-twisting device 301 plies the first yarn 11 spun in the first spooling device 101 and the second yarn 21 spun by the second spooling device 201 . There is no particular limitation on the type of the plying apparatus 301 . For example, a cable coder may be used as the plying device 301 .

Hereinafter, a method of manufacturing the ply-twisted yarn 30 according to another embodiment of the present invention will be described with reference to FIG. 4 .

A method of manufacturing a ply-twisted yarn 30 according to another embodiment of the present invention includes the steps of spinning a first yarn 11 in a first bobbin 141 mounted on a first spinning device 101, a second spinning the second yarn 21 on the second bobbin 241 mounted on the spinning device 201 and ply-twisting the first yarn 11 and the second yarn 21 .

The first yarn 11 is unwound from the first bobbin 141 and injected into the plying device 301 through rollers 51 and 51 . The second yarn 21 is unwound from the second bobbin 241 and injected into the plying device 301 through the roller 53 . The first yarn 11 and the second yarn 21 are plied in a piecing device 301 . In this case, a cable coder may be used as the plying device 301 .

The first maritime device 101 includes a support substrate 110 , a tension control unit 150 for controlling the rotation of the bobbin fixing unit 120 and the bobbin fixing unit 120 rotatably disposed on the supporting substrate 110 . do.

The bobbin fixing unit 120 includes a rotating unit 125 disposed on the supporting substrate 110 to rotate and a body unit 121 connected to the rotating unit 125 .

The tension control unit 150 includes a fixed end 151 disposed on the support substrate 110 , a belt adjustment unit 154 having a guide groove 155 , a head unit 156 inserted into the guide groove 155 , and a head unit. It includes a lever 157 connected to 156 and a belt 152 having one end fixed to the fixed end 151 and the other end connected to the head unit 156 . The belt 152 is in contact with the rotating part 125 .

According to another embodiment of the present invention, when the first yarn 11 wound around the first bobbin 141 is pulled, the first yarn 11 is unwound while the first bobbin 141 and the rotating part 125 are rotated. do. At this time, by adjusting the pressure applied by the belt 152 to the rotating unit 125 , the pulling force of the yarn 11 to rotate the first bobbin 141 and the rotating unit 125 is changed, and accordingly, the yarn 11 ) can be adjusted.

According to another embodiment of the present invention, the axial direction (ax1) of the first maritime device 101 and the axial direction (ax2) of the second maritime device 201 cross each other. Referring to FIG. 4 , the axial direction ax1 of the first maritime device 101 is a horizontal direction of the drawing, and the axial direction ax2 of the second maritime device 201 is a vertical direction of the drawing. For example, the first bobbin 141 mounted on the first maritime device 101 is disposed in a horizontal direction on the ground, and the second bobbin 241 mounted on the second maritime device 201 is vertical to the ground. can be placed as

At this time, the first yarn 11 is released while the bobbin fixing part 120 of the first dismantling device 101 is rotated. Tension must be applied to the first yarn 11 in order to rotate the bobbin fixing part 120 . Accordingly, when the bobbin fixing part 120 rotates, a tension is applied to the first yarn 11 .

When the first yarn 11 is spun, tension is applied, so that secondary twisting in the first yarn 11 is prevented in the spinning process of the first yarn 11 .

According to another embodiment of the present invention, the first yarn 11 is in a lower twisted state. Since the lower-twisted yarn has twist, if no tension is applied to the first yarn 11 , secondary twisting may occur in the first yarn 11 when the first yarn 11 is unwound. .

6 is a schematic diagram of the secondary twist occurring in the first yarn 11 . Since the first yarn 11 in the untwisted state already has twist, when no tension is applied to the first yarn 11, the first yarn 11 is twisted again as shown in FIG. Secondary kinking may occur. The secondary twist occurring in the first yarn 11 may have, for example, a figure 8 shape, a ribbon shape, and the like.

When secondary twisting occurs in the first yarn 11 , the first yarn 11 is not easily injected into the plying device 301 , and non-uniformity in plying may occur.

According to another embodiment of the present invention, since tension is applied to the first yarn 11 when the first yarn 11 is unwound, secondary twisting does not occur in the first yarn 11 . In addition, the first yarn 11 is supplied to the plying device 301 in a state in which a uniform tension is applied to the first yarn 11 . Accordingly, ply-twisting is performed with a constant twist to improve ply-twisting efficiency, and the ply-twisted yarn 30 formed by ply-twisting can have uniform physical properties.

Specifically, in the method of manufacturing a ply-twisted yarn according to another embodiment of the present invention, the tension applied to the first yarn 11 by adjusting the pressure applied to the bobbin fixing part 120 by the belt 152 is reduced. including adjusting. In addition, in order to adjust the pressure applied to the bobbin fixing part 120 by the belt 152 , the lever 157 is operated, and the head part 156 inserted into the guide groove 155 is moved.

According to another embodiment of the present invention, the first yarn 11 is nylon. Also, the first yarn 11 is in a lower twisted state. Also, the second yarn 21 is aramid. At this time, the aramid may be in a state that is not lowered. As such, when the second yarn 21 is not twisted, since there is no twist in the second yarn 21 , the second yarn 21 is secondarily twisted even if tension is not applied to the second yarn 21 . This does not happen. However, another embodiment of the present invention is not limited thereto, and tension may also be applied to the second yarn 21 .

According to another embodiment of the present invention, in the ply-twisting process, the tension of the first yarn 11, nylon, and the second yarn 21, of aramid can be adjusted, respectively, and in the state where the tension is adjusted, the first yarn ( 11) and the second yarn 21 are ply-twisted to form a ply-twisted yarn 30 of various shapes.

The ply-twisted yarn 30 according to another embodiment of the present invention may be used as a tire cord. The ply-twisted yarn 30 according to an embodiment of the present invention includes two or more different yarns 11 and 21, and may be used as a hybrid tire cord.

Hereinafter, the present invention will be described in more detail with reference to Examples, Comparative Examples and Test Examples. However, the scope of the present invention is not limited by the Examples, Comparative Examples or Test Examples described below.

<Examples 1 and 2>

According to the conditions in Table 1 below, the ply-twisted yarn 30 for the hybrid tire cords of Examples 1 and 2 was manufactured using the ply-twisted yarn manufacturing apparatus 200 of FIG. 4 . Here, nylon is used as the first yarn 11 and arami is used as the second yarn 21 . The first yarn 11 is provided in a lower-twisted state, and the lower-twisting and upper-twisting of the first yarn 11 and the second yarn 21 were performed during the ply-twisting process.

Specifically, nylon as the first yarn 11 and aramid as the second yarn 21 were staged in a cable coder twisting machine to prepare a ply-twisted yarn 30 . Table 1 shows the fineness, the number of twists, and the yarn balance of the first yarn 11 and the second yarn 21 . In the ply-twisted yarn 30 for hybrid cords manufactured by the ply-twisted yarn manufacturing apparatus 200 of FIG. 4 , the first yarn 11 and the second yarn 21 each have a first twist direction (Z-direction). and the first yarn 11 and the second yarn 21 were stitched together in the second twist direction (S-direction). Here, the second twist direction is opposite to the first twist direction.

Next, the ply-twisted yarn 30 was immersed in the adhesive coating solution and dried. Specifically, the ply-twisted yarn 30 was immersed in an adhesive coating solution containing resorcinol-formaldehyde-latex (RFL) and a solvent and then dried to prepare a hybrid tire cord.

<Comparative Examples 1 and 2>

Hybrid tire cords of Comparative Examples 1 and 2 were manufactured in the same manner as in Examples 1 and 2 according to the conditions in Table 1 below.

However, for the production of ply-twisted yarn for hybrid tire cords according to Comparative Examples 1 and 2, in the ply-twisted yarn manufacturing apparatus 200 of FIG. 4 , the first maritime device 101 is not used, and the two second maritime devices are not used. (201) was used. Specifically, the first yarn 11 and the second yarn 21 were spun by two second disengaging devices 201 arranged in the vertical direction and allowing the yarn to be disengaged in the vertical direction. Other processes are the same as in Examples 1 and 2. Table 1 shows the fineness, the number of twists and the yarn balance of the first yarn 11, nylon, and the second yarn 21, aramid.

<Measurement of twist defect rate>

It was observed whether twisting occurred in the process of preparing the ply-twisted yarns of Examples 1 and 2 and Comparative Examples 1 and 2.

Specifically, for each of Examples 1 and 2 and Comparative Examples 1 and 2, while preparing 10 ply-twisted yarns, the presence or absence of twist was checked, and the twist defect rate was obtained according to Equation 1 below.

[Equation 1]

Twisting defect rate (%)=[(Number of twist occurrences)/(10, total number of ply-twisted yarns)] x 100

<Measurement of manufacturing defect rate>

The defect rate was investigated in the tire cord manufacturing process. Specifically, 10 tire cords were manufactured for each of Examples 1 and 2 and Comparative Examples 1 and 2, and defects were checked, and the manufacturing defect rate was measured according to Equation 2 below.

[Equation 2]

Manufacturing defect rate (%)=[(Number of defective tire codes)/(10, Total number of tire codes)] x 100

The results are shown in Table 1 below.

Sample Comparative Example 1 Comparative Example 2 Example 1 Example 2 fineness de A:1500
N:1260 A:1000
N:840 A:1500
N:1260 A:1000
N:840 Stage (S) TPM 363 365 358 357 A Ha Yeon (Z) TPM 365 372 363 361 N Ha-yeon (Z) TPM 213 204 242 245 Yarn Balance Aramid: Nylon
= 0.985 : 1.015 Aramid: Nylon
= 0.985 : 1.015 Aramid: Nylon
= 0.985 : 1.015 Aramid: Nylon
= 0.985 : 1.015 Kink defective rate
(10 total) % 50 60 0 10 manufacturing defect rate
(10 total) % 80 70 0 0

In Table 1, "A" represents aramid (second yarn), and "N" represents nylon (first yarn). Referring to Table 1, it can be confirmed that when tire cords are manufactured according to Examples 1 and 2, there are fewer twist defects and fewer manufacturing defects compared to Comparative Examples 1 and 2.

10: Yarn 11: First Yarn
21: second yarn 30: ply-twisted yarn
100: maritime device 101: first maritime device
110: support substrate 120: bobbin fixing part
121: body 125: rotating part
127: belt receiving groove 140: bobbin
141: first bobbin 150: tension control unit
151: fixed height 152: belt
153: belt connection portion 154: belt adjustment portion
155: guide groove 156: head portion
157: lever 158: handle
159: rod 201: second maritime device
221: second bobbin fixing part 241: second bobbin
301: plies device

Claims (17)

a first maritime device on which a first bobbin on which a first yarn is wound is mounted;
a second disengagement device on which a second bobbin on which a second yarn is wound is mounted; and
Including; a plying device for plying the first yarn spun by the first spooling device and the second yarn spun by the second spooling device.
The first maritime device is
support substrate;
a bobbin fixing part rotatably disposed on the support substrate; and
and a tension control unit for controlling rotation of the bobbin fixing unit.
The bobbin fixing part,
a rotating part disposed on the support substrate to rotate; and
and a body part connected to the rotating part;
The tension control unit,
a fixed end disposed on the support substrate;
Belt adjustment unit having a guide groove;
a head part inserted into the guide groove;
a lever connected to the head part; and
a belt having one end fixed to the fixed end and the other end connected to the head unit; and
The axial direction of the first searing device and the axial direction of the second maritime device intersect each other, the ply-twisted yarn manufacturing apparatus. According to claim 1,
The belt is in contact with the rotating part, a ply-twisted yarn manufacturing apparatus. According to claim 1,
The rotating part has a belt receiving groove,
The belt is arranged in the belt receiving groove, ply-twisted yarn manufacturing apparatus. According to claim 1,
The lever includes a handle and a rod extending from the handle and connected to the head,
At least a portion of the rod is inserted into the guide groove, a ply-twisted yarn manufacturing apparatus. 5. The method of claim 4,
The belt adjustment unit has a rod entry and exit hole,
The rod entry/exit hole is connected to the guide groove, a ply-twisted yarn manufacturing apparatus; 6. The method of claim 5,
The rod entry and exit hole has a screw groove,
The rod has a threaded thread, a ply-twisted yarn manufacturing apparatus. According to claim 1,
Further comprising a belt connection portion between the head portion and the belt, ply-twisted yarn manufacturing apparatus. delete delete According to claim 1,
While the bobbin fixing part of the first spinning device is rotated, the first yarn is spun, a ply-twisted yarn manufacturing apparatus. unwinding a first yarn on a first bobbin mounted on a first unwinding device;
unwinding a second yarn on a second bobbin mounted on a second unwinding device; and
ply-twisting the first yarn and the second yarn to form a ply-twisted yarn including the first yarn and the second yarn;
The first maritime device is
support substrate;
a bobbin fixing part rotatably disposed on the support substrate; and
and a tension control unit for controlling rotation of the bobbin fixing unit.
The bobbin fixing part,
a rotating part disposed on the support substrate to rotate; and
and a body part connected to the rotating part;
The tension control unit,
a fixed end disposed on the support substrate;
Belt adjustment unit having a guide groove;
a head part inserted into the guide groove;
a lever connected to the head part; and
a belt having one end fixed to the fixed end and the other end connected to the head unit;
The axial direction of the first searing device and the axial direction of the second maritime device intersect each other, a method of manufacturing a ply-twisted yarn. delete 12. The method of claim 11,
The method of manufacturing a ply-twisted yarn in which the first yarn is unwound while the bobbin fixing part of the first unwinding device is rotated. 12. The method of claim 11,
and controlling the tension applied to the first yarn by adjusting the pressure applied to the bobbin fixing part by the belt by manipulating the lever. 12. The method of claim 11,
The method for producing a ply-twisted yarn, wherein the first yarn is in a lower-twisted state. 12. The method of claim 11,
The method for producing a ply-twisted yarn, wherein the second yarn is in an untwisted state. 12. The method of claim 11,
The method of claim 1, wherein the first yarn is nylon and the second yarn is aramid.

Images