KR102291653B1 - Vacuum container for curing tire and tire manufacturing apparatus comprising the same - Google Patents

Abstract

According to the present invention, disclosed is a vacuum container for tire vulcanization. More specifically, according to the present invention, disclosed is a vacuum container for tire vulcanization, including: a body in which a space for accommodating a tire is disposed; a lower plate that is disposed on the body and is provided with a vacuum suction hole for discharging internal air of the body; and a filter that is detachably connected to the vacuum suction hole and filters air discharged through the vacuum suction hole.

Description

Vacuum container for curing tire and tire manufacturing apparatus including same

The present invention relates to a vacuum container for tire vulcanization and a tire manufacturing apparatus including the same.

A vehicle driven by users is composed of many parts, and among them, a tire substantially affects the driving of the vehicle, and in particular, it can be said to be one of the key parts for securing the safety of the user.

In particular, due to the development of the industry, the movement of logistics increases, the amount of movement due to an increase in the amount of personal work, etc., and the amount of automobile operation due to an increase in family life are increasing.

Meanwhile, looking at the tire manufacturing process, a semi-finished product may be made by mixing elastic and flexible materials or other materials, and the semi-finished products may be molded to manufacture a green tire. Then, such a green tire can be vulcanized to manufacture a tire.

The vulcanization process includes a process of applying pressure to the green tire at a predetermined temperature for a certain period of time, for example, putting the green tire between the molds, and pressing the green tire in the mold direction from the inside of the green tire to give the mold shape or the surface shape of the mold. Corresponding tires can be manufactured. Through this process, a desired pattern can be formed on the surface of the tire, for example, the tread.

An object of the present invention is to provide a vacuum container for tire vulcanization capable of improving vacuuming efficiency and a tire manufacturing apparatus including the same.

A vacuum container for tire vulcanization according to an embodiment of the present invention includes a body having a space for accommodating a tire therein, and a vacuum suction hole disposed on the body and for discharging internal air of the body. It may include a lower plate and a filter detachably connected to the vacuum suction hole and filtering the air discharged through the vacuum suction hole.

In one embodiment of the present invention, the filter may include a protrusion protruding outward in the radial direction of the filter at one end.

In one embodiment of the present invention, when the air is discharged through the vacuum suction hole, the protrusion may be fixed in close contact with the lower plate by being pressed by the discharge pressure of the air.

In one embodiment of the present invention, the upper surface of the filter may be disposed on the same plane as the upper surface of the lower plate so as to be continuous with the upper surface of the lower plate.

In one embodiment of the present invention, the width of the filter may be the same as the width of the vacuum suction hole.

In one embodiment of the present invention, the protrusion may include a magnetic material.

In one embodiment of the present invention, the filter may include any one of a ceramic (ceramic) or a metallic material.

A tire manufacturing apparatus according to another embodiment of the present invention may include a vacuum container for tire vulcanization according to an embodiment of the present invention, and a mold unit disposed inside the vacuum container and pressing the tire.

The vacuum container for tire vulcanization and the tire manufacturing apparatus including the same according to embodiments of the present invention can prevent a decrease in vacuum efficiency in the vacuum container due to contaminants generated during the tire vulcanization process.

In addition, in the vacuum container for tire vulcanization and the tire manufacturing apparatus including the same according to embodiments of the present invention, the filter is detachably installed at the inlet of the vacuum suction hole, thereby improving the ease of cleaning and replacing the filter. , thereby preventing deterioration of the filter performance.

1 is a cross-sectional view illustrating an exemplary operating state of a vacuum container for tire vulcanization and a tire manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view illustrating another operating state of the vacuum container for tire vulcanization and the tire manufacturing apparatus of FIG. 1 .
3 is a perspective view illustrating a lower plate disposed in the vacuum container of FIG. 1 and a filter installed therein.
FIG. 4 shows an embodiment of a filter disposed in the vacuum container of FIG. 1 ;
FIG. 5 shows another embodiment of a filter disposed in the vacuum container of FIG. 1 ;
6 is a cross-sectional view illustrating a state in which a mold closing process is started in the vacuum container and tire manufacturing apparatus of FIG. 1 .
7 is a cross-sectional view illustrating a state in which a vacuuming process inside the vacuum container is started in the vacuum container and tire manufacturing apparatus of FIG. 1 .
8 is a cross-sectional view illustrating a state in which a vacuuming process is completed in the vacuum container and tire manufacturing apparatus of FIG. 1 .

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, in each drawing, components are exaggerated, omitted, or schematically illustrated for convenience and clarity of description, and the size of each component does not fully reflect the actual size.

In the description of each component, in the case where it is described as being formed on or under, both on and under are formed directly or through other components. Including, the standards for the upper (on) and the lower (under) will be described with reference to the drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted. do.

1 is a cross-sectional view illustrating an exemplary operating state of a vacuum container for tire vulcanization and a tire manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating another operating state of the vacuum container for tire vulcanization and the tire manufacturing apparatus of FIG. 1 . 3 is a perspective view illustrating a lower plate disposed in the vacuum container of FIG. 1 and a filter installed therein.

1 to 3 , a vacuum container for tire vulcanization (hereinafter, “vacuum container”) may include a body and a filter 100 . In this case, the tire manufacturing apparatus may include the above-described vacuum container and a mold unit, wherein the mold unit may include an upper side mold 60 , a tread mold 70 , and a lower side mold 80 . .

The body may have a space for accommodating the green tire (G in FIG. 6 ) therein. In this case, the body may include an upper plate 10 , an outer ring 20 , a segment 30 , a lower plate 40 , a sub upper plate 50 , and a clamp 90 .

The upper plate 10 may fix the side surface of the green tire G during curing, and may control air in/out of the vacuum container. In this case, the sub upper plate 50 may be disposed between the upper plate 10 and the outer ring 20 to be described later. The sub upper plate 50 may be slidable in the vertical direction based on the drawing.

As an embodiment, as shown in FIG. 1 , the outer ring 20 and the sub upper plate 50 may descend so that the outer ring 20 may contact the lower plate 40 . When the sub-upper plate 50 comes into contact with the upper plate 10 , the inside of the vacuum container is sealed, so that air in and out of the upper side of the upper plate 10 can be prevented. As another embodiment, as shown in FIG. 2 , when the outer ring 20 and the sub upper plate 50 rise, air flows into and out of the vacuum container through the upper exhaust hole 11 formed in the upper plate 10 . or may be discharged.

An upper side mold 60 may be disposed on the upper plate 10 . The upper side mold 60 may contact the upper side of the green tire G to fix the upper side of the green tire G.

The outer ring 20 may be disposed on the side surface of the upper plate 10 to surround the side surface of the upper plate 10 . The outer ring 20 may move vertically with respect to the upper plate 10 . In this case, the segment 30 may be installed on the inner surface of the outer ring 20 .

The segment 30 may be disposed to be slidable in the vertical direction with respect to the outer ring 20, and at this time, the upper side of the vacuum container is caused by the movement of the segment 30 according to the vertical movement of the outer ring 20 as described above. and side air entry and exit can be controlled. As an embodiment, the outer ring 20 moves downward so that the outer ring 20 comes into contact with the upper plate 10 and the lower plate 40 so that the air to the upper and side surfaces of the vacuum container can be blocked. have.

The outer ring 20 may include a side sliding plate 21 installed on a contact surface between the outer ring 20 and the segment 30 . The side sliding plate 21 may relieve frictional force that may occur between the segment 30 and the outer ring 20 when the segment 30 slides.

The outer ring 20 may include a guide key 22 formed to protrude toward the segment 30 , wherein the segment 30 may include a sliding groove 31 accommodating the guide key 22 . . The guide key 22 may slide in the vertical direction in the sliding groove 31 according to the vertical movement of the outer ring 20 .

The upper exhaust hole 11 is installed on the upper side of the segment 30 and can allow or block the air flow to the upper side of the vacuum container according to the movement of the guide block 32 that is slidably coupled to the upper exhaust hole 11 . have.

In this case, the segment 30 may reciprocate between the approaching direction and the away direction from the tread of the green tire G by the vertical movement of the outer ring 20 . According to the reciprocating motion of the segment 30 , the guide block 32 opens or closes the upper exhaust hole 11 provided in the upper plate 10 , thereby controlling the air flow to the upper side of the vacuum container.

A tread mold 70 may be installed on the inner surface of the segment 30 . The tread mold 70 may press the tread of the green tire G or release the pressure applied to the tread according to the movement of the segment 30 . As an embodiment, when the segment 30 moves in the direction toward the tread of the green tire G, the tread mold 70 moves together with the segment 30 to press the tread of the green tire G during vulcanization. can do. As another embodiment, when the segment 30 moves in a direction away from the green tire G, the tread mold 70 may release the pressure applied to the green tire G by moving along with the segment 30 .

The lower plate 40 may be a support placed on the body to support all other components of the vacuum container. In this case, the lower plate 40 may support the segment 30 to be slidable along the direction toward or away from the tread of the green tire G.

A lower sliding plate 42 may be disposed on the contact surface between the lower plate 40 and the segment 30 , and the lower sliding plate 42 is configured to slide between the lower plate 40 and the segment 30 when the segment 30 slides. Friction between them can be alleviated.

A lower side mold 80 may be installed on the lower plate 40 , and in this case, the lower side mold 80 may contact the lower side of the green tire G. In this case, the lower side mold 80 may fix both sides of the green tire G together with the upper side mold 70 .

The lower plate 40 may include a vacuum suction hole 41 for discharging air downward. The vacuum suction hole 41 may be connected to a vacuum pump (not shown) separately provided outside the vacuum container through a vacuum pipe (not shown). In this case, the vacuum pump may operate in the vacuum mode of the vacuum container to discharge the air inside the vacuum container to the outside.

The clamp 90 may be a structure that assists in the management of the vacuum container. The clamp 90 may be installed on the side surfaces of the outer ring 20 and the lower plate 40 to fix the outer ring 20 and the lower plate 40 together.

On the other hand, as the outer ring 20 moves downward, the segment 30 moves in a direction to press the green tire G, and the tread mold 80 installed in the segment 30 includes the upper side mold 70 and By making contact with the lower side mold 60, the inside of the vacuum container can be sealed. As described above, in a state in which the inside of the vacuum container is sealed, the air remaining inside the vacuum container may be discharged to the outside of the vacuum container through the vacuum suction hole 41 .

FIG. 4 shows an embodiment of a filter disposed in the vacuum container of FIG. 1 ; FIG. 5 shows another embodiment of a filter disposed in the vacuum container of FIG. 1 ;

Referring to FIG. 4 , the filter 100 may be installed in the vacuum suction hole 41 . In this case, the filter 100 may filter the air discharged through the vacuum suction hole 41 . As an embodiment, the filter 100 may be disposed at an end of the vacuum suction hole 41 from which air remaining in the vacuum container starts to be discharged into the vacuum suction hole 41 . In this case, the filter 100 may be detachably disposed in the vacuum suction hole 41 , and details thereof will be described later.

The filter 100 may be disposed such that the upper surface of the filter 100 is positioned on the same plane as the upper surface of the lower plate 40 . The upper surface of the filter 100 may be continuous with the upper surface of the lower plate 40 . Accordingly, when the tread mold 70 moves in the direction of pressing or depressurizing the tread of the green tire G according to the movement of the segment 30 , the filter 100 prevents the movement of the tread mold 70 . it can be prevented In addition, when the tray mold 70 and the lower plate 40 are arranged to be spaced apart by a fine distance, the upper surface of the filter 100 is continuous with the upper surface of the lower plate 40, so that the tread mold 70 may be guided to move towards the tread.

The width of the filter 100 may be the same as the width of the vacuum suction hole 41, and as such, the width of the filter 100 is formed to be the same as the width of the vacuum suction hole 41, so that the filter 100 is the vacuum suction hole. (41) can be inserted so that there is no play. In this case, all of the air that passes through the filter 100 and is discharged through the vacuum suction hole 41 may be filtered by the filter 100 .

As another embodiment, the width of the filter 100 may be different from the width of the vacuum suction hole 41 . For example, the width of the filter 100 may be slightly larger than the width of the vacuum suction hole 41, and in this case, a portion of the outer shell of the filter 100 may be formed of an elastic material. In this case, the filter 100 may be inserted by being compressed so that the width of the filter 100 corresponds to the width of the vacuum suction hole 41 while at least a part of the filter 100 is inserted into the vacuum suction hole 41 . have. After the compressed filter 100 is inserted into the vacuum suction hole 41 as described above, it can be restored and fixed by being fitted so that there is no play in the vacuum suction hole 100 .

As another embodiment, the insertion end 101 of the filter 100 may be chamfered to be inclined toward the center of the filter 100 from the outer shell of the filter (100). Thereby, the filter 100 can be easily inserted into the vacuum suction hole 41 having a width smaller than the width of the filter 100 , and also the vacuum suction hole 41 during the insertion process of the filter 100 . can be prevented from being damaged.

The filter 100 may include a protrusion 110 protruding outward in a radial direction of the filter 100 at one end. The end of the filter 100 provided with the protrusion 110 may be an end opposite to the insertion end of the filter 100 . In this case, the width of the protrusion 110 may be greater than the width of the vacuum suction hole 41 . The protrusion 110 is caught on the surface around the vacuum suction hole 41 of the lower plate 40, thereby preventing the filter 100 from falling into the vacuum suction hole 41, and the position of the filter 100 is It may be fixed to the end of the vacuum suction hole (41).

The protrusion 110 may be detachable from the surface of the lower plate 40 . In this case, the protrusion 100 may include a magnetic material. The protrusion 100 may be fixed by being magnetically coupled to the surface of the lower plate 40 by a magnetic material. In this case, the magnetic force of the magnetic material included in the protrusion 100 may be a magnetic force that allows the operator to separate the protrusion 100 from the lower plate 40 without a separate tool or equipment. Accordingly, when the user cleans or replaces the filter 100 , by separating the protrusion 110 from the lower plate 40 , there is no need to dismantle the vacuum pipe as in the prior art, and the filter 100 can be removed from the vacuum container. It can be easily separated.

However, the present invention is not limited thereto, and as another embodiment, a coupling protrusion (not shown) is provided on the lower surface of the protrusion 110 , and the upper portion of the lower plate 40 facing the lower surface of the protrusion 110 . A coupling groove (not shown) may be provided on the surface. In this case, the protrusion 110 may be coupled and disengaged from the lower plate 40 by mechanical coupling and disengagement of the coupling protrusion and coupling groove.

In the tire vulcanization process, a vacuuming process of making the inside of the vacuum container into a vacuum state by discharging the air inside the vacuum container to the outside may be performed. When the internal air of the vacuum container is discharged through the vacuum suction hole 41 in the vacuuming process, the protrusion 110 may be pressed by the discharge pressure of the air to be fixed in close contact with the lower plate 40 . Specifically, a portion of the discharged air may press the upper surface of the protrusion 110 in a direction parallel to the longitudinal direction of the filter 100 . Accordingly, since the protrusion 110 is in close contact with the lower plate 40 , the filter 100 may be fixed to the lower plate 40 while the vacuuming process is in progress.

As another embodiment, referring to FIG. 5 , the protrusion 110 may include a flat portion (a) and an inclined surface portion (c). At this time, the flat portion (a) may be disposed on the same plane as the upper surface of the lower plate 40, whereby the flat portion (a) is the filter 100 to prevent the movement of the tread mold 70 as described above. can be prevented from interfering.

The flat portion (a) may be disposed between the lower plate 40 and the inclined surface portion (c). Specifically, when the filter 100 is inserted into the vacuum suction hole 41, the radially outer end of the flat portion (a) is disposed to be in contact with the lower plate 40, the radially inner side of the flat portion (a) The end may be connected to the inclined surface portion (c).

The inclined surface portion (c) may be connected to the radially inner end of the flat portion (a) and inclined toward the center of the filter 100 from the radially inner end of the flat portion (a). At this time, the cross section of the inclined surface portion (c) may be a curved line, but the present invention is not limited thereto, and the cross section of the inclined surface portion (c) may be a straight line.

As another embodiment, the protrusion 110 may include only the inclined surface portion c without the flat portion a. Specifically, the protrusion 110 may be disposed such that the inclined surface portion c is in contact with the upper surface of the lower plate 40 . In this case, the inclined surface portion c may be inclined toward the center of the filter 100 from the end in contact with the lower plate 40 .

When the air inside the vacuum container is discharged to vacuum the inside of the vacuum container, the discharged air may be guided to the vacuum suction hole 41 along the inclined surface portion c. While the discharged air moves along the inclined surface portion (c), the inclined surface portion (c) is pressed in the direction toward the center of the filter (100) by the discharge pressure of the air, whereby the filter (100) and the lower plate (40) And the adhesion of the vacuum suction hole 41 may be strong. Accordingly, it is possible to prevent the filter 100 from being separated from the vacuum suction hole 41 while the vacuuming process is in progress.

During the vacuum container vacuuming process, some of the discharged air may pressurize the flat portion a in a direction parallel to the longitudinal direction of the filter 100 . As such, while the air inside the vacuum container is discharged due to the double pressurization including the pressurization of the inclined surface portion c and the pressurization of the flat portion a by the discharge pressure of the air, the filter 100 is disposed on the lower plate 40 ) and the effect of preventing separation from the vacuum suction hole 41 can be improved.

The filter 100 may include at least one of a ceramic and a metallic material.

In one embodiment, the filter 100 may be a ceramic filter. In this case, the ceramic filter may include, for example, porous alumina ceramics of different sizes. In this case, porous alumina ceramics having a relatively small size are filled between the porous alumina ceramics having a relatively large size in the ceramic filter, thereby minimizing the empty space of the ceramic filter. Accordingly, it is possible to further increase the filtration efficiency of the contaminants of the ceramic filter.

In another embodiment, the filter 100 may be a metallic filter. In this case, the metallic filter may have a mesh structure. In this case, as the discharged air is filtered while passing through the metallic filter, the user can easily check the degree of contaminants accumulated between the mesh structures of the metallic filter with the naked eye. Accordingly, by exchanging the filter 100 before the filtration performance of the filter 100 is too low, it is possible to maintain the pollutant filtration efficiency constant.

However, the present invention is not limited thereto, and the filter 100 may include gypsum, and in this case, contaminants contained in the discharged air may be filtered by the porous structure of the gypsum. In addition, the filter 100 may have a multilayer structure including at least two or more of a ceramic material and a metallic material.

6 is a cross-sectional view illustrating a state in which a mold closing process is started (ie, a state before the vacuuming process is started) in the vacuum container and tire manufacturing apparatus of FIG. 1 .

Referring to FIG. 6 , the outer ring 20 and the segment 30 connected to the outer ring 20 descend together, so that the segment 30 may contact the lower plate 40 . At this time, the guide block 32 disposed in the upper exhaust hole 11 is located in the first position (eg, the position of the guide block 32 in FIG. 6 ), and accordingly, air may be circulated in and out of the vacuum container. That is, when the outer ring 20 descends and the segment 30 comes into contact with the lower plate 40 , it is located between the upper side mold 60 and the tread mold 70 , and between the tread mold 70 and the lower side mold. Since the space between 80 is not closed, air can freely circulate in and out of the vacuum container through the gap.

7 is a cross-sectional view illustrating a state in which a vacuuming process inside the vacuum container is started in the vacuum container and tire manufacturing apparatus of FIG. 1 .

Referring to FIG. 7 , after the segment 30 comes into contact with the lower plate 40 according to the lowering of the outer ring 20 , the outer ring 20 continues to descend so that the outer ring 20 is connected to the lower plate 40 . ) can be contacted. At this time, the guide block 32 is located at the second position (eg, the position of the guide block 32 in FIG. 7 ), and accordingly, air circulation to the upper side of the vacuum container can be prevented. In addition, when the outer ring 20 comes into contact with the lower plate 40, the upper side mold 60 and the tread mold 70, and between the tread mold 70 and the lower side mold 80 are all closed. , it is possible to block the inflow of air into the vacuum container after this moment.

In the state as described above, the vacuum pump connected to the vacuum suction hole 41 through a vacuum pipe operates, and the air remaining in the container, that is, the air remaining between the tread mold 70 and the green tire G The inside of the vacuum container may be evacuated by discharging to the outside through the vacuum suction hole 41 .

8 is a cross-sectional view illustrating a state in which a vacuuming process is completed in the vacuum container and tire manufacturing apparatus of FIG. 1 .

Referring to FIG. 8 , since the vacuum inside the vacuum container is completed, all of the air remaining between the tread mold 70 and the green tire G may be discharged to the outside. In this case, the tread mold 70 may be closer to the green tire G side as compared to the tread mold 70 shown in FIG. 7 , and in this case, the outer ring 20 and the outer ring 20 shown in FIG. It can move further to the lower plate 40 side. In addition, as the outer ring 20 descends, the sub upper plate 50 also moves further downward, thereby sealing the space between the upper plate 10 and the sub upper plate 50 .

Referring back to FIGS. 6 to 8 , from the lowermost end of the lower plate 40 to the uppermost end of the outer ring 20 at the moment when the segment 30 comes into contact with the lower plate 40 as the outer ring 20 descends. The distance is defined as the first distance d1, and the outer ring 20 from the lowermost end of the lower plate 40 at the moment when the outer ring 20 contacts the lower plate 40 and the vacuum mode of the vacuum container starts. The distance to the uppermost end is defined as the second distance d2, and the distance from the lower end of the lower plate 40 at the moment when the vacuum inside the vacuum container is completed to the uppermost end of the outer ring 20 is referred to as the third distance d3. can be defined In this case, a relationship of d1 > d2 > d3 may be established between the first distance d1 and the third distance d3.

As described above, in the vacuum container for tire vulcanization and the tire manufacturing apparatus including the same according to embodiments of the present invention, the vacuuming efficiency inside the vacuum container is prevented from being reduced due to contaminants generated during the tire vulcanization process. can do.

In addition, in the vacuum container for tire vulcanization and the tire manufacturing apparatus including the same according to embodiments of the present invention, the filter 100 is detachably installed at the inlet of the vacuum suction hole 41 to clean and replace the filter. It is possible to improve the easiness, thereby preventing the performance of the filter 100 from being deteriorated.

In the above, the embodiments shown in the drawings have been described with reference to, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: top plate
20: outer ring
30: segment
40: lower plate
50: sub upper plate
60: upper side mold
70: tread mold
80: lower side mold
90: clamp
100: filter
101: insertion end
110: protrusion

Claims (8)

a body in which a space for accommodating the tire is disposed;
a lower plate disposed on the body and provided with a vacuum suction hole for discharging internal air of the body; and
a filter detachably connected to the vacuum suction hole and filtering the air discharged through the vacuum suction hole;
The filter includes a protrusion protruding outward in the radial direction of the filter at one end,
The protrusion is
flat part; and
and an inclined surface portion connected to the radially inner end of the flat portion. delete According to claim 1,
When the air is discharged through the vacuum suction hole, the protrusion is pressed by the discharge pressure of the air to be fixed in close contact with the lower plate, a vacuum container for tire vulcanization. According to claim 1,
A vacuum container for tire vulcanization, wherein the upper surface of the filter is disposed on the same plane as the upper surface of the lower plate so as to be continuous with the upper surface of the lower plate. According to claim 1,
The width of the filter is equal to the width of the vacuum suction hole, a vacuum container for tire vulcanization. According to claim 1,
wherein the protrusion comprises a magnetic material. According to claim 1,
The vacuum container for tire vulcanization, wherein the filter comprises either a ceramic or a metallic material. a vacuum container for tire vulcanization according to any one of claims 1 and 3 to 7; and
and a mold unit disposed inside the vacuum container and pressing the tire.

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