KR102122369B1 - Rigid member of engine room encapsulation and manufactuirng method therefor - Google Patents

Abstract

The present invention relates to a metal sheet member (2) for engine encapsulation used by being bonded to a mat for engine encapsulation. Uneven protrusions (12) and pinholes (14) are arranged on a surface of an aluminum foil sheet (10). The uneven protrusions (12) are formed so that downward protruding grooves (12a) and upward protruding grooves (12b) are arranged not to be aligned with each other by rolling compression of an upper embossing roll and a lower embossing roll. The thickness (t) of the aluminum foil sheet (10) is 50 to 200μm. The size (D) of the pinhole (14) is 0.1 to 0.5 mm, spacing (P) between the pinholes (14) is 1.5 to 3 mm, and the number of perforations of the pinholes (14) is 30 to 36 percm^2. The size (m) of the downward protruding grooves (12a, 12b) is 1.5 to 2.2 mm, the depth (k) of the downward protruding grooves (12a, 12b) is 0.5 to 2 mm, and spacing (s) between the downward protruding grooves (12a) and between the upward protruding grooves (12b) is 2.5 to 4.5 mm.

Description

Metal sheet member for engine encapsulation and its manufacturing method {RIGID MEMBER OF ENGINE ROOM ENCAPSULATION AND MANUFACTUIRNG METHOD THEREFOR}

The present invention relates to a member for engine encapsulation, and more particularly, to a metal sheet member capable of improving engine encapsulation insulation properties.

An example of an element in the automotive industry these days is improving fuel economy. In addition to the regulation of harmful emissions, carbon dioxide regulation is also being strengthened recently, and the difference in fuel efficiency between the driving mode used in the fuel efficiency certification test and the actual road driving mode is revealed, and the test mode is changed to the direction based on the actual road driving conditions. Because of this, interest in improving fuel efficiency is increasing.

The engine of a car needs to be warmed up sufficiently to enable efficient operation, and when frozen, the combustion chamber temperature is low due to the low temperature, and the combustion efficiency is reduced. Degradation may occur.

Thus, for example, by installing a member such as a heat insulating material inside the engine room, it minimizes the heat energy generated from or remaining in the engine immediately after engine start is stopped, and is stored in cooling water or oil of the engine. Engine encapsulation, which can improve fuel efficiency by making it possible, is becoming important.

Engine encapsulation is a technology that minimizes the heat energy generated by the engine after the engine is stopped from being wasted into the atmosphere and wraps the engine part with insulation so that it can be stored in engine coolant or oil. That is, it is a technology that can improve the fuel economy deterioration problem, which is a problem during cold start by keeping the temperature high during restart by gradually decreasing the coolant temperature and the oil temperature after the start stop, and improvement is continuously desired.

Patent Publication No. 10-2108-0116579 "Engine room encapsulation board and method for manufacturing the same"

Accordingly, an object of the present invention is to provide a metal sheet member for engine encapsulation and a method of manufacturing the same, which enables an improvement in thermal insulation characteristics in constructing an engine encapsulation member that improves fuel efficiency.

The present invention according to the above object, in the metal sheet member for the engine encapsulation is used to be bonded to the mat for engine encapsulation, the uneven embossing 12 and pinholes 14 on the surface of the aluminum foil sheet 10 Arranged to be formed, the uneven embossing 12 is formed by arranging the downwardly embossed grooves 12a and the upwardly embossed grooves 12b to be displaced from each other by rolling compression of the upper embossing roll and the lower embossing roll, and the aluminum foil sheet 10 The thickness (t) of 50 ~ 200㎛, the size (D) of the pinhole 14 is 0.1 ~ 0.5mm, the spacing (P) of the pinhole 14 is 1.5 ~ 3mm, the number of holes in the pinhole 14 is 30 ~ 36 pieces/cm2, the size (m) of embossed grooves (12a) (12b) 1.5 to 2.2 mm, the depth (k) of embossed grooves (12a) (12b) is 0.5 to 2 mm, between downwardly projecting embossed grooves (12a) and The spacing (s) between the upward projecting embossed grooves (12b) is characterized in that it consists of 2.5 ~ 4.5mm.

In addition, the present invention, in the method for manufacturing a metal sheet member for engine encapsulation that is used by being bonded to a mat for engine encapsulation,

A material supply process for providing an aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm from a material supply roll,

An aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm, a pin roll pair 30 composed of a pressurizable upper pin roll 32 arranged with a plurality of perforated pins and a lower elastic roll 34 to prevent pinhole clogging. A plurality of pinholes 14 are arranged on the surface of the aluminum foil sheet 10 by perforation through perforation, but the size (D) of the pinhole 14 is 0.1 to 0.5 mm, and the spacing (P) between the pinholes 14 is 1.5. ~3mm, the pinhole punching process for forming the pinholes 14 to perforate so that the number of perforations of the pinhole 14 is 30 to 36/cm 2,

A transfer process provided by the embossing roll pair 50 while the tension is controlled by the tension adjusting rolls 22 so that the pinholes 14 are prevented from folding of the perforated aluminum foil sheet 10,

The pinhole 14 is formed of a perforated aluminum foil sheet 10, a pair of embossed rolls 50 composed of a plurality of upper embossed pins arranged with an upper embossed roll 52 and a plurality of upper embossed pins arranged with a lower embossed roll 54. ) To form a concavo-convex embossing 12 in which clogging of the pinholes 14 is prevented, but the size (m) of the embossing grooves 12a and 12b on the surface of the aluminum foil sheet 10 having the pinholes 14 is 1.5. ~2.2mm, the depth (k) of the embossed grooves (12a) (12b) is 0.5 to 2mm, and the spacing (s) between the downwardly embossed grooves (12a) and the upwardly embossed grooves (12b) is 2.5 to 4.5mm An embossing process to form the arranged uneven embossing 12,

After the embossing process, it is characterized by a post-processing process of cutting and taking out the aluminum foil sheet 10 in which the pinholes 14 and the embossings 12 are arranged.

The present invention prevents damage to the product due to high heat exposure to the local part of the engine or improves indoor quietness by implementing an improved heat insulation characteristic that is considered together with sound absorption and sound absorption by additionally utilizing aluminum materials in constructing the engine encapsulation member. And it has the advantage of reducing the CO ₂ emissions of the vehicle to prevent harmful problems to the entire vehicle.

1 is a perspective configuration diagram of a metal sheet member for engine encapsulation according to an embodiment of the present invention,
Figure 2 is a cross-sectional configuration of the metal sheet member for engine encapsulation according to an embodiment of the present invention,
Figure 3 is an enlarged cross-sectional configuration of the metal sheet member for engine encapsulation of Figure 2,
4 is a view for explaining the porosity of the metal sheet member for engine encapsulation of the present invention,
Figure 5 is an exemplary illustration of a metal sheet member for engine encapsulation according to an embodiment of the present invention,
Figure 6 is a manufacturing process of the metal sheet member for engine encapsulation of the present invention.

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

The metal sheet member for engine encapsulation in the present invention is preferably an aluminum foil material having excellent thermal conductivity in order to improve thermal insulation properties, and is preferably used in combination with an encapsulation fiber-type composite material mat, and improves thermal insulation properties on the metal material surface. And it is possible to improve the sound absorption and sound insulation, and at the same time, to minimize the loss of functionality of the fibrous composite mat disposed on the back side.

1 is a perspective view of a metal sheet member 2 for engine encapsulation according to an embodiment of the present invention, and FIG. 2 is a cross-section of a metal sheet member 2 for engine encapsulation according to an embodiment of the present invention. 3 is an enlarged cross-sectional configuration of the metal sheet member 2 for engine encapsulation of FIG. 2.

The metal sheet member 2 for engine encapsulation of the present invention uses an aluminum foil sheet 10 made of an aluminum foil material excellent in thermal conductivity to facilitate uniform dispersion of concentrated heat, and insulates the aluminum foil sheet 10. At the same time as the arrangement of the concavo-convex embossing 12, which is advantageous for the provision of the air layer for the sound absorbing and sound absorbing functionality, at the same time, the improved fine pinholes 14 are formed to improve the functionality of the sound absorbing and insulating.

The plurality of uneven embossings 12 and the number of pinholes 14 formed according to the present invention are not simultaneously molded one by one by press, but the aluminum foil sheet wound on the material supply roll 20 according to the processing procedure shown in FIG. 6. (10) As the material is continuously supplied while being unwound, a pin roll pair (30) that perforates numerous pinholes (14) and an emboss roll pair that forms upper and lower emboss grooves (12a) (12b) on the surface of the foil sheet ( While passing through 50) sequentially, a plurality of pinholes 14 and a plurality of uneven embossings 12 are completely formed on the aluminum foil sheet 10 without shape deformation, pinhole clogging, or foil sheet tearing.

The uneven embossing 12 formed on the aluminum foil sheet 10 is embossed downward protruding downward and upwardly embossed by rolling compression of the upper embossing roll (52 in FIG. 6) and the lower embossing roll (54 in FIG. 6). The grooves 12b are configured to be arranged to be shifted from each other, and the numerous fine pinholes 14 formed by rolling compression of the upper pin roll (32 in FIG. 6) and lower elastic roll (34 in FIG. 6) in which perforated pins are arranged. It is a structure formed by perforation.

Due to the process configuration of the present invention, there is a possibility of hole clogging due to damage to the pinhole during the embossing process after pinhole drilling, but preferentially, the lower roll facing the upper pinroll 32 is disposed with an elastic roll 34 and uneven. The embossing of the upper embossing roll 52 forming the embossing 12 and the embossing of the lower embossing roll 54 are displaced from each other, and downward protrusion formed corresponding to one surface and the other surface of the aluminum foil sheet 10 through loose rolling pressing. By forming the embossed groove 12a and the upwardly projecting embossed groove 12b, the pinhole 14 already formed is prevented from clogging.

The aluminum foil sheet 10 is a material having excellent thermal conductivity, and is used for improving the heat insulation properties according to the present invention (such as to quickly distribute the concentrated heat evenly), but forming the pinhole 14 and embossing 12 on the metal surface. In order to facilitate processing, the thickness (t) has a thickness of 50 to 200㎛ to prevent tearing or defects in pin punching during processing or transportation. When the thickness (t) of the aluminum foil sheet 10 exceeds 200 μm, evenly punching of the numerous pinholes 14 is not good, and the size of the pinhole perforated due to the thickness of the foil itself is reduced to such a degree that it is difficult to express functional properties such as sound absorption and noise In addition, if the thickness (t) of the aluminum foil sheet 10 is less than 50 μm, it may be torn during processing or transportation, and the pinhole size may exceed the size required for imparting functionality by punching punching force. It is significant.

The metal sheet member 2 for engine encapsulation of the present invention has a plurality of uneven embossings 12 formed on the surface of the aluminum foil sheet 10, thereby forming an air layer to improve heat insulation performance, and on the aluminum foil sheet 10 surface. Numerous pin holes 14 are formed to absorb noise and disappear, so that noise is not transmitted.

The inventor of the present invention includes improved heat insulation suitable for engine encapsulation and heat insulation to dissipate concentrated heat, and is adhered to the encapsulation fiber-type composite material mat to prevent loss of functionality on the mat and to match the engine noise. There have been numerous tests to improve the sound absorbing and sound and to ensure continuous product productivity through a defect-free process, and uneven embossings 12 and pin holes 14 of the aluminum foil sheet 10 under the following conditions. ) To implement the metal sheet member 2 for engine encapsulation.

-The size (D) of the pinhole 14: 0.1~0.5mm,

-The gap (P) of the pinhole 14: 1.5~3mm

-Number of holes in pinhole 14: 30~36/㎠

-Size of embossed groove (12a) (12b) (m): 1.5 to 2.2mm

-Depth (k) of embossed groove (12a) (12b): 0.5~2mm

-Spacing distance between embossed groove (12a) and embossed groove (12b) (s) 2.5~4.5mm

The size (m) of the embossed grooves 12a and 12b formed in the aluminum foil sheet 10 of the present invention, the depth (k) of the embossed grooves 12a and 12b, the size (D) of the pinholes 14, and the pinholes When the number of punches in (14) is within the range, the heat insulation properties are improved, the sound absorbing and insulating properties are improved, and the workability is excellent.

However, molding below the range results in poor thermal insulation or sound absorption, while molding above the numerical conditions results in the size (m) or depth of the embossed grooves (12a) (12b) formed by the embossing roll pair (50). Since (k) is an engine encapsulation outer shell, it is difficult to mold and the embossed groove protruding part may be torn, which may result in a loss of function after molding, so the embossed groove 12a in the aluminum foil sheet 10 in the present invention )(12b) and the depth, size, etc. of the micro-through hole 14 are limited so as to have conditions that can be applied to cope with the heat insulation performance and noise of the engine room of the vehicle.

4 is a view for explaining the porosity of the aluminum foil sheet 10 used as the metal sheet member 2 for engine encapsulation of the present invention, the porosity is obtained as in Equation 1 below.

[Equation 1]

Here, D is the size of the pinhole 14 and P is the distance between the pinholes 14.

The porosity of the aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm according to an embodiment of the present invention is the minimum of the size (D) of the pinhole 14 and the distance (P) between the pinhole 14 / 0.3 ~ 3.3 narrower than that obtained in the maximum range is preferable.

The incident sound wave is absorbed into the mat through the many fine pinholes 14 on the surface of the aluminum foil sheet 10. When sound waves are incident, they are absorbed by vibrating air particles in the surface or pinhole 14. The reason for the sound absorption is that part of the incident energy is converted into thermal energy due to the viscosity of air particles in the pinhole 14 or by friction with the inner wall surface of the pinhole 14.

Since the sound absorption rate may vary depending on the frequency characteristics of the engine noise, the thickness of the aluminum foil sheet 10, the size or depth of the uneven embossing 12, these parameters should be considered together, and the porosity also has a desirable range corresponding thereto.

5 is an exemplary view of a picture of a metal sheet member 2 for engine encapsulation according to an embodiment of the present invention, in which a plurality of uneven embossings 12 are divided into upper and lower surfaces to form an arrangement in which the embossed grooves 12a and 12b are misaligned. And, even though the embossed grooves 12a and 12b are formed, it can be seen that numerous pinholes 14 without clogging are formed together.

6 is a manufacturing process diagram of the metal sheet member 2 for engine encapsulation of the present invention.

The manufacturing method of the metal sheet member 2 for engine encapsulation used by being bonded to a mat for engine encapsulation will be described with reference to FIG. 6.

First, a material supplying process (S1) of supplying the aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm from the material supply roll 20 to the pin roll pair 30 is performed, and aluminum foil is applied to the pin roll pair 30. When the sheet 10 is supplied, a pinhole drilling process (S2) is performed.

In the pinhole perforation process (S2), an aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm is supplied with a pressurized upper pin roll 32 in which a plurality of perforation pins are arranged and a lower elastic roll (for preventing pinhole clogging). A plurality of pinholes 14 are formed on the surface of the aluminum foil sheet 10 by punching through the pin roll pair 30 composed of 34), but the size (D) of the pinhole 14 is 0.1 to 0.5 mm, and the pinhole ( 14) The interval P between the holes is 1.5 to 3 mm, and the number of holes in the pin hole 14 is 30 to 36 pieces/cm 2 so that the pin holes 14 are perforated.

In the pinhole perforation process (S2), the perforated pins formed in the upper pin roll 32 are uniformly arranged to form a uniform perforation of the pin hole 14, and the upper pin roll 32 is prevented from uneven perforation due to deflection to one of the left and right sides. In order to do this, a horizontal axis adjusting part of the upper pin roll 32 is provided on the upper pin roll 32. Further, the lower elastic roll 34 is a roller coated with a rubber material.

The material supply process (S1) or the pinhole drilling process (S2), transfer so that the pinholes 14 in the material supply process (S1) or the pinhole 14 in the pinhole perforation process (S2) are prevented from being folded. The tension is adjusted to the transfer control rolls 22 disposed in various places in the process (S3), and the aluminum foil sheet 10 in which the pinholes 14 are perforated is transferred by the transfer roll 40 and embossing roll pair 50 ) To perform the transfer process (S3).

In this way, the embossing roll pair 50 receiving the aluminum foil sheet 10 to be tension-controlled is carried out to perform the embossing process (S4).

In the embossing process (S4), the aluminum foil sheet 10 in which the pinholes 14 are perforated is formed by aligning the upper emboss roll 52 with a plurality of upper emboss pins and the lower emboss roll 54 arranged with a plurality of upper emboss pins. ) To form a concavo-convex embossing 12 in which clogging of the pinholes 14 is prevented by passing between the embossed roll pairs 50, but embossed grooves 12a and 12b on the surface of the aluminum foil sheet 10 having the pinholes 14. The size (m) of 1.5 ~ 2.2mm, the depth (k) of the embossed grooves (12a) (12b) is 0.5 ~ 2mm, the spacing between the downwardly embossed groove (12a) and the upwardly embossed groove (12b) (s ) To form the uneven embossing 12 arranged in 2.5 ~ 4.5mm.

After performing the embossing process (S4), the pinholes 14 and the embossing 12 are cut and taken out of the aluminum foil sheet 10, followed by a post-processing process (S5) 46 of the present invention. The metal sheet member 2 for engine encapsulation is completed.

When the metal sheet member 2 for engine encapsulation of the present invention as described above is bonded to the mat for engine encapsulation, it has the following advantages.

-It is possible to improve fuel efficiency and reduce carbon dioxide emissions by slowing down the super insulation material and allowing it to restart at higher temperatures.

-It can reduce heat loss and bring about quick ice-making effect, and reduces pollution by reducing the number of cold start.

-Increased energy efficiency and reduced fuel consumption in several short runs

-Easy to secure technology for developing parts in high temperature areas such as engines

In the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be determined by the described embodiments, but should be defined by the claims and equivalents to the claims.

(2)-- Metal sheet member for engine encapsulation
(10)-- Aluminum foil sheet (12)-- Uneven embossing
(12a)-Embossed groove protruding upward (12b)-Embossed groove protruding downward
(14)-- Pinhole

Claims (2)

In the metal sheet member for engine encapsulation that is used by being bonded to a mat for engine encapsulation,
On the surface of the aluminum foil sheet 10, uneven embossing 12 and pinholes 14 are arrayed, but the uneven embossing 12 is upwardly protruded downward from the embossing groove 12a by rolling compression of the upper embossing roll and the lower embossing roll. The protruding embossed grooves 12b are formed to be displaced from each other, the thickness t of the aluminum foil sheet 10 is 50 to 200 μm, the size (D) of the pinhole 14 is 0.1 to 0.5 mm, and the pinhole 14 is The spacing (P) is 1.5 to 3 mm, the number of holes in the pinhole (14) is 30 to 36/cm2, the size of the embossed groove (12a) (12b) (m) 1.5 to 2.2 mm, the embossed groove (12a) (12b) The depth (k) of 0.5 ~ 2mm, the spacing between the downward protrusion embossed groove (12a) and the upward protrusion embossed groove (12b) (s) is composed of a metal for engine encapsulation, characterized in that composed of 2.5 ~ 4.5mm Seat member.
In the method for manufacturing a metal sheet member for engine encapsulation that is used by being bonded to a mat for engine encapsulation,
A material supply process for providing an aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm from a material supply roll,
An aluminum foil sheet 10 having a thickness (t) of 50 to 200 μm, a pin roll pair 30 composed of a pressurizable upper pin roll 32 arranged with a plurality of perforated pins and a lower elastic roll 34 to prevent pinhole clogging. A plurality of pinholes 14 are arranged on the surface of the aluminum foil sheet 10 by perforation through perforation, but the size (D) of the pinhole 14 is 0.1 to 0.5 mm, and the spacing (P) between the pinholes 14 is 1.5. ~3mm, the pinhole punching process for forming the pinholes 14 to perforate so that the number of perforations of the pinhole 14 is 30 to 36 pieces/cm 2,
A transfer process provided by the embossing roll pair 50 while the tension is controlled by the tension adjusting rolls 22 so that the pinholes 14 are prevented from folding of the perforated aluminum foil sheet 10,
The pinhole 14 is formed of a perforated aluminum foil sheet 10, a pair of embossed rolls 50 composed of a plurality of upper embossed pins arranged with an upper embossed roll 52 and a plurality of upper embossed pins arranged with a lower embossed roll 54. ) To form a concavo-convex embossing 12 in which clogging of the pinholes 14 is prevented, but the size (m) of the embossing grooves 12a and 12b on the surface of the aluminum foil sheet 10 having the pinholes 14 is 1.5. ~2.2mm, the depth (k) of the embossed grooves (12a) (12b) is 0.5 to 2mm, and the spacing (s) between the downwardly embossed grooves (12a) and the upwardly embossed grooves (12b) is 2.5 to 4.5mm An embossing process to form the arranged uneven embossing 12,
A method of manufacturing a metal sheet member for engine encapsulation, characterized in that a post-processing process of cutting and taking out an aluminum foil sheet 10 in which pinholes 14 and embossings 12 are arranged after the embossing process is performed.

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