WO2011059165A1

WO2011059165A1 - Multilayer roll forming sheet for heat protection and a manufacturing method therefor

Info

Publication number: WO2011059165A1
Application number: PCT/KR2010/005151
Authority: WO
Inventors: 김성대; 장수달
Original assignee: 주식회사 모팜
Priority date: 2009-11-10
Filing date: 2010-08-05
Publication date: 2011-05-19
Also published as: CN102596443B; KR100958733B1; CN102596443A

Abstract

The present invention relates to a multilayer roll forming sheet for heat protection, which is prepared as an interposer by adhering at least two metal sheets formed, and a manufacturing method therefor. In the multilayer roll forming sheet for heat protection, a first projection of a bilaterally symmetrical structure is formed by expanding the top end outward on both sides, and a second projection and a third projection are formed on both sides of the first projection by extending the top end in an upward diagonal direction and stretching outward, thereby interposing each of the metal sheets to each other. As the multilayer roll forming sheet consists of a light, thin plate and has unique shape projections that serve to prevent each metal sheet being detached and then separated in both horizontal and vertical directions such that a firm shape can be retained during a forming process and the formed shape may act flexibly in the diagonal direction. As such, the sheet can be subjected to a variety of press forming processes so as to present excellent formability during a post-process and secures a plurality of spaces to block heat and noise in multiple ways, thereby substantially improving the heat and sound insulation efficiency.

Description

Thermal insulation multilayer roll forming sheet and manufacturing method thereof

The present invention relates to a multi-layered roll forming sheet for heat shielding manufactured by overlapping by molding two or more metal sheets in close contact with each other. More specifically, the present invention provides a heat protector for a product requiring heat shielding performance including an engine and an exhaust pipe of a vehicle. The present invention relates to a heat shield multilayer roll forming sheet and a method of manufacturing the same, which have greatly improved adhesion, moldability, heat shielding, and sound insulation efficiency.

In general, a thin sheet made of metal is used as a heat protector for heat shielding in products requiring heat shielding performance such as engines and exhaust pipes of vehicles.

In particular, the engine of an automobile is a device that generates power by burning fuel, and the combustion gas discharged from the combustion chamber has a high temperature of about 800 to 900 ° C. In this way, the combustion gas discharged from the combustion chamber is gathered in one place through the exhaust manifold, and then discharged to the atmosphere along the exhaust pipe. After reduction, it is released into the exhaust gas into the atmosphere. In order to prevent the high heat of the exhaust gas passing through the exhaust manifold and the exhaust pipes from being transmitted to the engine compartment, the body and the indoor floor, a multi-layered sheet made mainly of steel or aluminum The heat shield sheet is formed to surround the engine, the exhaust manifold, the exhaust pipe, and the like.

However, conventional heat shielding sheets that have been used in products requiring heat shielding performance, such as engines, exhaust pipes, and the like of the vehicle, are formed by processing each component sheet separately, and then using a bonding part such as an adhesive or a bolt in the middle. Since it is a method of combining, only one-way departure prevention is considered, and when used for post-processing, there is a problem that the upper and lower plates are slipped or separated to fix the misaligned plates to their original positions, and then work.

In order to solve this problem, as shown in the external view of the heat insulating sheet of the exhaust pipe of Fig. 1 (a), a plurality of metal sheets 1 are overlapped by using roll forming to form an engine or an exhaust pipe. By forming a corrugated protrusion 2 by forming a corrugated protrusion 2 by embossing the metal sheet 1, as shown in the cross-sectional view along the AA direction of FIG. 1 (b). Although the technology to improve the degree of development has been developed, it is difficult to prevent the phenomenon that the upper and lower plates slip off due to the formation of a simple corrugated protrusion (2), and the thermal insulation and sound insulation performance have not been greatly improved. There was a difficult problem of machining due to the complicated internal structure.

The present invention has been made to solve the above problems, it is light weight, it is possible to maintain a solid shape during the molding process by forming a unique shape of the projection, and various press molding is possible, excellent in formability during post-processing, multiple It is an object of the present invention to provide a heat shielding multilayer roll forming sheet and a method of manufacturing the same, which significantly improve heat shielding and sound insulation efficiency by blocking heat and noise.

The present invention is a multi-layered roll forming sheet for thermal insulation is formed by overlapping by forming two or more metal sheets in close contact with each other, so that the upper end portion is extended to both sides to form a constant space between the upper end portion and the bottom surface of the metal sheet. The first protrusion 41 of the symmetrical structure is formed, and the second and

third protrusions

42 and 43 protruding outward are formed on both sides of the first protrusion 41 by extending upward in a diagonal direction. The first protrusion 41 and the second and

third protrusions

42 and 43 are continuously repeated, and the metal sheets overlap each other, and protrude in the upward diagonal direction of the second and

third protrusions

42 and 43. The angle α is 5 to 30 °, and the multi-layered roll forming sheet for heat shielding, characterized in that a space 50 is formed between the upper ends of the second and

third protrusions

42 and 43 and the bottom surface of the metal sheet. to provide.

At this time, there is also a feature that the conical projection is formed in the space 50 further.

In addition, the present invention provides a method for manufacturing a thermally shielded multi-layer roll forming sheet is formed by overlapping by molding two or more metal sheets in close contact with each other, comprising the steps of: placing each metal sheet overlapping each other; Pass each of the disposed metal sheets between the forming rolls 100

'Type projection 20 and,'

Forming

triangular protrusions

30a and 30b such that the shapes are symmetrical to the left and right of the 'shaped protrusion 20; remind '

Pressing the 'type projection 20 and the triangular projections (30a, 30b) with the end roll 200, the upper end is extended to both sides outside of the left and right symmetrical structure formed a constant space between the top surface and the bottom surface of the metal sheet The first protrusion 41 and the second and

third protrusions

42 and 43 protruding upward at a diagonal direction on both sides of the first protrusion 41 to protrude outward at an angle α of 5 to 30 degrees. And forming a space portion 50 between the upper end portions of the second and

third protrusions

42 and 43 and the bottom surface of the metal sheet.

'A step of forming the projection 20 and the triangle projections (30a, 30b), a plurality of'

It provides a method for manufacturing a thermally insulating multilayer roll forming sheet, characterized in that the 'protrusion' 20 and the triangular projections (30a, 30b) are sequentially formed through a number of steps by increasing the number of rolls.

At this time, the step of overlapping each metal sheet is also characterized in that the layer of the insulating material or the sound insulating material disposed between each metal sheet.

Furthermore, the above '

The step of forming the '20' and the

triangular protrusions

30a and 30b is also characterized in that the conical protrusions 35 are also formed in the space 50 between the

triangular protrusions

30a and 30b. .

Here, in the step of forming the first, second, third projections and the space portion, it is also characterized in that the conical projection 35 is also pressed by the end roll 200 to produce each metal sheet overlapping each other.

By providing a heat shielding multilayer roll forming sheet according to the present invention and a method for manufacturing the same, each overlapping metal sheet is made of a thin plate to form a lightweight, unique shape projection to prevent the separation of the upper and lower left and right of each metal sheet to prevent separation It is possible to maintain a solid shape during molding processing, and it is possible to form various press moldings by flexibly forming the shape in diagonal direction, so it is excellent in formability during post-processing, and secures a large number of spaces to block heat and noise multiplely. It provides an excellent effect that the heat shielding and sound insulation efficiency is greatly improved.

Figure 1 (a) is an external view of a conventional heat insulating sheet applied to the exhaust pipe of the vehicle, Figure 1 (b) is a cross-sectional view of the AA direction of FIG.

Figure 2 (a) is a '

'(B) is a front view showing the shape of the projection and the triangular projection is formed, Figure 2 (b) is a front view showing the shape of the first and second and third projections formed on both sides of the present invention, Figure 2 (c) is the present invention Front view showing a state in which the conical projections formed.

Figure 3 is a plan view showing the form of the first and second and third projections formed on both sides of the present invention.

4 is an open view of a roll forming apparatus for manufacturing a heat shielding multilayer roll forming sheet according to the present invention;

Figure 5 is a block diagram showing a roll arrangement structure of the thermal insulation multi-layer roll forming sheet according to the present invention.

Figure 6 shows the procedure of the manufacturing method of the embodiment according to the present invention, Figure 6 (a) is a view when there is no conical projection, Figure 6 (b) is a view when the conical projection is formed.

7 is a flow chart showing a method of manufacturing a thermal insulation multilayer roll forming sheet according to the present invention.

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

Figure 2 (a) is a '

'(B) is a front view showing the shape of the projection and the triangular projection is formed, Figure 2 (b) is a front view showing the shape of the first and second and third projections formed on both sides of the present invention, Figure 2 (c) is the present invention Figure 3 is a front view showing a conical projection formed in accordance with, Figure 3 is a plan view showing the shape of the first and second and third projections formed on both sides of the present invention, Figure 4 is a multi-layered roll forming sheet for thermal insulation according to the present invention 5 is a schematic view showing a roll arrangement structure of a heat shielding multilayer roll forming sheet according to the present invention, and FIG. 6 is a view showing a procedure of a manufacturing method of an embodiment according to the present invention; 7 is a flowchart illustrating a method of manufacturing a thermal insulation multilayer roll forming sheet according to the present invention.

The multi-layered roll forming sheet for heat shielding of the present invention is formed into overlapping materials by forming two or more metal sheets in close contact with each other by forming protrusions in the longitudinal direction through various steps using a forming roll, and finally, overlapping the sheet. Water is bent in the transverse direction by the end roll to complete the multilayer roll forming sheet.

Finally, the configuration of the multi-layer roll forming sheet of the present invention is the first projection 41 of the left and right symmetrical structure formed by the forming roll 100 and the end roll 200, as shown in Figure 2 (b) And second and

third protrusions

42 and 43 protruding diagonally on the left and right sides of the first protrusion 41 are continuously repeated.

That is, the first protrusion 41 is protruded upward by the forming roll 100 '

'After forming the protrusion 20, by the end roll 200'

The upper end of the '-shaped protrusion 20 is extended to both sides to the outside to form a corrugated (left and right) to increase the surface area in contact with heat to exhibit an excellent heat shielding effect. In this case, since the first protrusion 41 has a symmetrical structure in which the upper end portion extends from side to side, a predetermined space is formed between the first protrusion 41 and the bottom surface of the sheet in the process of forming the first protrusion.

In addition, a second protrusion 42 and a third protrusion 43 are formed at the left side of the first protrusion 41, and the second protrusion 42 and the third protrusion 43 are positioned therebetween. The shape is symmetrical about the first projection 41. In addition, the second and

third protrusions

42 and 43 protrude upward by the forming roll 100 to form

triangular protrusions

30a and 30b, and then are pressed down by the end roll 200 to form the triangular protrusions. The upper ends of the 30a and 30b are formed to extend upwardly and protrude in a diagonal direction so as to be formed outwardly curved. At this time, the space portion 50 is formed between the upper end portion of the second and

third protrusions

42 and 43 which are pressed down by the end rolls and extended in the diagonal direction and the bottom surface of the sheet. As such, the surface area of the second and

third protrusions

42 and 43 formed diagonally increases and the space portion 50 formed therebetween ensures a large amount of space for heat shielding and sound insulation. In addition to the improvement, the shape of the second and

third protrusions

42 and 43 formed diagonally when the roll forming sheet is formed by pressing can be flexibly applied to various forming processes according to the work purpose. The seat is firmly fixed to prevent the top, bottom, left and right separation.

At this time, the angle α which protrudes in the upward diagonal direction of the second and

third protrusions

42 and 43 is preferably 5 ° to 30 °. When the angle α is less than 5 °, the space part 50 formed between the second and

third protrusions

42 and 43 and the bottom surface of the sheet is reduced to reduce the heat shielding and sound insulation effects, and the angle α When the angle exceeds 30 °, the space part 50 is difficult to form due to the excessively formed angle of the protruding portion of the upper end of the second and

third protrusions

42 and 43, and the separation effect of each metal sheet is prevented. Is reduced.

In addition, as shown in FIG. 2 (c), a conical protrusion 35 may be further formed in the space 50 formed between the second and

third protrusions

42 and 43, and the conical protrusion 35 may be formed. Is formed using the forming roll (100). The conical projection 35 increases the separation prevention effect of each metal sheet in the horizontal direction.

At this time, each of the metal sheets is preferably made of a thin plate of 0.5mm or less, because when the thickness of the metal sheet exceeds 0.5mm, the weight is increased, and the moldability and processing precision is inferior. In addition, it is more preferable that each metal sheet is made of a thin aluminum sheet for processing, formability and product weight reduction.

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

Basically, the multi-layered roll forming sheet for thermal insulation according to the present invention is manufactured through a multi-step roll forming process, and in order to reduce the weight of the product, it is preferable that each metal sheet is made of aluminum, but a metal sheet other than the aluminum sheet is used. If you can.

According to the present invention, a method of manufacturing a thermally insulating multi-layer roll forming sheet manufactured by overlapping two or more metal sheets in close contact with each other, as shown in FIGS. 6 and 7, first arranges each metal sheet to overlap each other. The process goes to step S10. Usually, two metal sheets are overlapped with upper and

lower plates

10B and 10A to perform a roll forming operation, and the metal sheet can be molded by varying the number of metal sheets according to the purpose of use. In this case, the heat insulating and sound insulating layer may be disposed between the metal sheets to further improve the heat shielding and sound insulating functions.

The overlapped metal sheets of step S10 pass through the forming rolls 100 shown in FIG. 4 and protrude upwards.

'Protrusions 20 and triangular projections (30a, 30b) to make a shape (step S20). At this time, 'continuously repeated' on the sheet metal sheet

When forming the 'type protrusion 20 and the

triangular protrusions

30a and 30b at once, the possibility of breakage of the metal sheet increases, so that the stability is impaired. In the present invention, as shown in the roll arrangement of FIG. Instead of forming multiple protrusions at the same time, the number of rolls is increased by increasing the number of rolls.

By forming the 'type protrusion 20 and the triangular protrusions (30a, 30b) has an effect that can stably roll-form the metal sheet.

As shown in FIG. 6 (b), the conical protrusion 35 may also be formed in the space portion between the

triangular protrusions

30a and 30b (S25). The conical projection 35 is also made by passing the metal sheet between the forming roll 100, and further enhances the separation prevention effect of the overlapping metal sheet in the horizontal direction.

And, formed in step S20

'The first projection 41 and the first projection 41 of the left and right symmetrical structure formed by pressing the' 20 'and the triangular projections (30a, 30b) by pressing the end roll 200, and crushed, 2) and

3rd projections

42 and 43 protruding outwardly extending upward in a diagonal direction on both sides with respect to the center), and between the upper ends of the second and

third projections

42 and 43 and the bottom surface of the metal sheet. Form a space 50 of the (S30 step).

In this case, the conical protrusion 35 may also be pressed by the end roll 200 to manufacture a multi-layered roll forming sheet for thermal insulation in which metal sheets overlap each other.

Figure 3 shows a structure viewed from the top of the thermal insulation multi-layer roll forming sheet produced by the manufacturing method according to the present invention, by pressing the multi-layer roll forming sheet superimposed by the forming roll with the end roll '

'Type projection 20 is bent in a jar shape, triangular projection (30a, 30b) is the'

The 'shaped projection 20 will be squeezed from side to side around the center.

The first, second, and

third protrusions

41, 42, and 43 and the conical protrusions 35 described above are molded in different sizes depending on the purpose of use, and the upper and lower sheets have the same shape and overlap each other. do.

Claims

In the thermal insulation multi-layer roll forming sheet which is formed by overlapping by molding two or more metal sheets in close contact with each other,

A first protrusion 41 of a symmetrical structure is formed such that an upper end portion extends outward from both sides to form a predetermined space between the upper end portion and the bottom surface of the metal sheet.

On both sides of the first protrusion 41, second and third protrusions 42 and 43 protruding outward are formed in the upper end portion extending upward in a diagonal direction,

While the first protrusion 41 and the second and third protrusions 42 and 43 are continuously repeated, the metal sheets overlap each other.

The angle α of the second and third protrusions 42 and 43 protruding upward in a diagonal direction is 5 to 30 degrees, and is disposed between the upper end of the second and third protrusions 42 and 43 and the bottom surface of the metal sheet. Heat shielding multilayer roll forming sheet, characterized in that the space 50 is formed.
The method of claim 1,

The multi-layered roll forming sheet for heat shielding, characterized in that the conical projection 35 is further formed in the space 50.
In the method of manufacturing a multi-layered roll forming sheet for heat shielding is formed by overlapping by molding two or more metal sheets in close contact with each other,

Disposing each metal sheet overlapping each other;

Pass each of the disposed metal sheets between the forming rolls 100
'Type projection 20 and,'
Forming triangular protrusions 30a and 30b such that the shapes are symmetrical to the left and right of the 'shaped protrusion 20;

remind '
Pressing the 'type projection 20 and the triangular projections (30a, 30b) with the end roll 200, the upper end is extended to both sides outside of the left and right symmetrical structure formed a constant space between the top surface and the bottom surface of the metal sheet The first protrusion 41 and the second and third protrusions 42 and 43 protruding upward at a diagonal direction on both sides of the first protrusion 41 to protrude outward at an angle α of 5 to 30 degrees. And forming a space 50 between the upper ends of the second and third protrusions 42 and 43 and the bottom surface of the metal sheet.

remind '
'A step of forming the projection 20 and the triangle projections (30a, 30b), a plurality of'
Method for producing a multi-layer roll forming sheet for heat shielding, characterized in that the forming projection 20 and the triangular projection (30a, 30b) is sequentially formed through a number of steps by increasing the number of rolls.
The method of claim 3,

The step of overlapping each metal sheet is a method of manufacturing a multi-layer roll forming sheet for thermal insulation, characterized in that the insulating layer or the layer of the sound insulating material disposed between each metal sheet.
The method of claim 3,

remind '
Forming the '20' and the triangular projections (30a, 30b) for the heat shield, characterized in that also forming a conical projection 35 in the space 50 between the triangular projections (30a, 30b) Manufacturing method of multilayer roll forming sheet
The method of claim 5,

In the forming of the first, second and third protrusions and the space part, the multi-layered roll forming for heat shielding, wherein the conical protrusions 35 are also pressed by the end rolls 200 to overlap each metal sheet. Manufacturing method of the sheet.