CN212266862U - Sound-absorbing composite board - Google Patents

Abstract

The utility model discloses an acoustic composite board, which comprises two aluminum board layers fixed together, wherein the two aluminum board layers form an interlayer space, a core board is arranged in the interlayer space, the interlayer space is divided into a plurality of filling spaces by the core board, and acoustic absorbing substances are filled in the filling spaces; two a plurality of evenly distributed's the sound hole of inhaling is all seted up on the aluminium sheet layer with the core, two the sound hole staggered arrangement is inhaled to the aluminium sheet layer, and two inhale all the equal coincidence of sound hole at the ascending projection of axial on the aluminium sheet layer. The utility model discloses when taking into account composite sheet light characteristic for the composite sheet has obtained the effect of inhaling the sound, and has two-sided sound effect of inhaling, and then can inhale the sound to interior space and wall body in decorating.

Description

Sound-absorbing composite board

Technical Field

The utility model relates to a sampling device technical field specifically is an inhale sound composite sheet.

Background

The principle of inhaling the sound is the effect of utilizing the sound absorbing hole for the energy of sound wave is weakened, and then reduces sound, and modern wall decoration's requirement is higher and higher, also higher and higher to the requirement of material, also more and more to the use of composite sheet in decorating, decorates the composite sheet because of the superiority and the high price/performance ratio of its self material, decorates the composite sheet and has played crucial decorative effect in the architectural decoration.

In the prior art, for the corresponding composite board, many functions are extended, such as a corrosion-resistant composite board, a composite board with variable surface texture, a fireproof composite board, a sound-absorbing composite board and the like.

SUMMERY OF THE UTILITY MODEL

The technical insufficiency to the above-mentioned existence, the utility model aims at providing an inhale sound composite sheet when taking into account composite sheet light characteristic for the composite sheet has obtained the effect of inhaling the sound, and has two-sided sound effect of inhaling, and then can inhale the sound to interior space and wall body in decorating.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides an acoustic composite board, which comprises two aluminum board layers fixed together, wherein the two aluminum board layers form an interlayer space, a core board is arranged in the interlayer space, the two aluminum board layers are fixed together through the core board, the core board divides the interlayer space into a plurality of filling spaces, and acoustic absorbing substances are filled in the filling spaces;

two a plurality of evenly distributed's the sound hole of inhaling is all seted up on the aluminium sheet layer with the core, two the sound hole staggered arrangement is inhaled to the aluminium sheet layer, and two inhale all the equal coincidence of sound hole at the ascending projection of axial on the aluminium sheet layer.

Preferably, the core plate is a folded plate, and the cross section of the filling space formed between the core plate and the aluminum plate layer is an isosceles trapezoid.

Preferably, the inner diameters of the sound absorbing holes in the two aluminum plate layers are the same and are larger than the inner diameter of the sound absorbing hole in the core plate.

Preferably, a protective layer is arranged on each of the two aluminum plate layers.

Preferably, the protective layer is a paint finish.

Preferably, the core plate is made of aluminum alloy.

Preferably, the sound absorbing substance is sound absorbing cotton.

The beneficial effects of the utility model reside in that:

the utility model fixes two aluminum plate layers together through the core plate, and a plurality of filling spaces are generated through the folding of the core plate, so that the whole composite plate has certain hollow effect, the light function of the composite plate is ensured, the porosity of the whole composite plate is expanded through the filling spaces formed on the other hand, the addition of the sound-absorbing cotton further increases the area of the rib in the material, and the absorption of noise is promoted;

meanwhile, the two aluminum plate layers and the core plate are provided with sound absorption holes, so that the porosity is further increased, and the whole composite plate has a double-sided attraction effect by utilizing the folding structure of the two aluminum plate layers and the core plate; the sound-absorbing holes on the other two aluminum plate layers are distributed in a staggered manner, so that the path of sound waves is indirectly prolonged, and the problem that the sound waves directly penetrate through the two aluminum plate layers by directly utilizing the coaxial condition of the sound-absorbing holes of the two aluminum plate layers is solved;

in addition, the folding structure of the core plate forms a structure for filling the space, and the strength of the composite plate is ensured to a certain extent by utilizing the trapezoidal support characteristic.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view (cross-sectional view) of an acoustic composite board according to an embodiment of the present invention;

FIG. 2 shows the distribution of sound holes when two aluminum plate layers are overlapped;

FIG. 3 is a distribution of sound absorption holes of one of the aluminum plate layers;

FIG. 4 is a distribution of sound absorption holes of another aluminum plate layer;

FIG. 5 shows the distribution of sound absorption holes of the core plate;

fig. 6 is a schematic view of the edge seal.

Description of reference numerals: 1-aluminum plate layer, 11-sound absorbing hole, 2-core plate, 3-protective layer, 4-silencing cotton and 5-edge sealing layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): as shown in fig. 1, the utility model provides an acoustic composite board, which comprises two aluminum plate layers 1 fixed together, wherein the two aluminum plate layers 1 form an interlayer space, a core plate 2 is arranged in the interlayer space, the two aluminum plate layers 1 are fixed together through the core plate 2, for fixation, the three are fixed by using a glue agent, the glue agent is the same as the glue agent used in the production of the existing composite board, such as a polymer bonding film, which can realize fixation;

the sandwich space is divided into a plurality of filling spaces by the core plate 2, and the filling spaces are filled with sound-absorbing substances 4 which are sound-absorbing cotton or other sound-absorbing materials such as foam glass;

as shown in fig. 1, 2, 3, and 4, a plurality of uniformly distributed sound absorption holes are formed in two aluminum plate layers 1 (a solid line circle in fig. 2 is a sound absorption hole 11 on one of the aluminum plate layers 1, and a dotted line circle is a sound absorption hole 11 on the other aluminum plate layer 1), the sound absorption holes 11 of the two aluminum plate layers 1 are arranged in a staggered manner, and projections of the sound absorption holes 11 in the two aluminum plate layers 1 in the axial direction are not coincident (the axial direction refers to the axial direction of the sound absorption hole 11 of the aluminum plate layer 1, that is, the direction of an arrow in fig. 1), that is, the sound absorption holes 11 in the two aluminum plate layers 1 are not coaxial and do not have an overlapping part, that is, the sound absorption holes 11 in the two aluminum plate layers 1 are distributed in a staggered manner, which indirectly prolongs the path of sound waves, and reduces the problem that sound waves directly pass through the sound absorption.

As shown in fig. 5, the core 2 is also provided with a plurality of sound-absorbing holes 11 uniformly distributed, and further, in order to improve the suction effect and generate a blocking effect on the sound waves, the inner diameters of the sound-absorbing holes 11 on the two aluminum plate layers 1 are the same and are larger than the inner diameter of the sound-absorbing hole 11 on the core 2, that is, the sound waves are transmitted through the large aperture and then through the small aperture by using the change of the gap.

It can be seen from figure 1 that core 2 is the folded sheet, the cross section of the filling space that forms between core 2 and the aluminium sheet layer 1 is isosceles trapezoid, core 2 is the filling space that is a plurality of isosceles trapezoid structure with the intermediate layer space segmentation promptly, this kind of segmentation mode, make core 2 and the upper aluminium sheet layer 1 between have direct contact's filling space, and the aluminium sheet layer 1 of lower floor between also have direct contact's filling space, and to core 2 and aluminium sheet layer 1's fixed position, because the sound absorption hole 11 has also been seted up on the core 2, consequently all can pass through the cotton suction effect of sound absorption when the sound wave transmits from one of them side:

for example, when sound waves are transmitted in the direction of the arrow in fig. 1, the sound waves are directly transmitted to the sound-absorbing cotton (i.e., the filling space in direct contact with the aluminum sheet layer 1) through the sound-absorbing holes 11 of the upper aluminum sheet layer 1, and then are absorbed by the sound-absorbing cotton, and finally are absorbed by the core 2 and the lower aluminum sheet layer 1; its two, the sound wave passes through the sound hole of inhaling of the aluminium sheet layer 1 on upper strata and directly transmits to core 2 (being core 2 and aluminium sheet layer 1's fixed position department), because core 2 also has the sound hole of inhaling, consequently the sound wave still can pass core 2 inhale sound hole 11 get into with lower floor's aluminium sheet 1 direct contact inhale the sound cotton on, at last through lower floor's aluminium sheet layer 1 inhale the sound, promptly final sound wave penetrates the back from one side, can pass through and inhale the sound cotton, and then guarantee to inhale the sound effect.

With reference to fig. 1, in the overall composite board, two aluminum plate layers 1 are directly exposed to the outside to damage the aluminum plate layers 1 to a certain extent, and therefore, in order to further protect the aluminum plate layers 1, a protective layer 3 is disposed on the aluminum plate layers 1, and specifically, a paint surface is formed by applying a protective paint, such as a fluorocarbon finish paint and an outer paint layer used by the existing composite board, on the aluminum plate layers 1.

In this application, core 2 makes whole composite sheet produce on the one hand and has had certain cavity effect, the porosity of whole composite sheet has been expanded, this kind of beta structure of on the other hand core 2, form the filling space of trapezium structure, make the intensity of composite sheet obtain certain guarantee, for the consideration to intensity, on selecting to core 2's material, the aluminum alloy has been selected, on the one hand core 2's thickness will be less than aluminum plate layer 1, on the other hand aluminum alloy material itself is lighter, consequently core 2 adopts the aluminum alloy material can not produce great increase to the gravity of whole composite sheet, consequently whole composite sheet still is lighter in weight, still have certain light weight characteristic.

Because the sound absorbing holes are formed in the aluminum plate layer 1 and the core plate 2 in the composite plate, and the core plate 2 is of a folding structure, gaps can be generated on the side edges of the composite plate during actual manufacturing, so that part of sound absorbing cotton is exposed outside, as shown in fig. 6, glue needs to be sealed around the composite plate to form the edge sealing layer 5, and then a protective effect is formed.

According to the actual production, we give the dimensional parameters of the parts where the thickness of the aluminium sheet layer 1 is between 4mm and 8 mm; the thickness of the core plate 2 is between 1mm and 2 mm; the total thickness of the protective layer 3 is between 0.2mm and 0.5 mm; the aperture of the sound absorption hole 11 of the aluminum plate layer 1 is about 3mm, and the aperture of the sound absorption hole 11 of the core plate 2 is between 1mm and 2 mm; other specific dimensions may of course be used and are not specifically limited in this application.

When in use, during actual production, the position of the sound absorption hole 11 needs to be determined according to the size of the aluminum plate layer 1 and the size of the sound absorption hole 11 thereon, that is, as shown in fig. 3 and 4, when two aluminum plate layers 1 are overlapped together, the distribution mode of the sound absorption hole 11 shown in fig. 2 is formed; according to the mode of 11 dislocation in the sound hole of inhaling of two aluminium sheet layer 1, inhale the sound cotton after filling, fix two aluminium sheet layer 1 and core 2, form whole composite sheet.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (7)

1. The sound-absorbing composite board is characterized by comprising two aluminum board layers which are fixed together, wherein an interlayer space is formed by the two aluminum board layers, a core board is arranged in the interlayer space, the two aluminum board layers are fixed together through the core board, the interlayer space is divided into a plurality of filling spaces by the core board, and sound-absorbing substances are filled in the filling spaces;

two a plurality of evenly distributed's the sound hole of inhaling is all seted up on the aluminium sheet layer with the core, two the sound hole staggered arrangement is inhaled to the aluminium sheet layer, and two inhale all the equal coincidence of sound hole at the ascending projection of axial on the aluminium sheet layer.

2. The acoustic composite panel according to claim 1, wherein the core sheet is a folded sheet, and a cross section of the filling space formed between the core sheet and the aluminum sheet layer is an isosceles trapezoid.

3. The composite acoustical board of claim 2, wherein the sound-absorbing holes in both of said aluminum board layers have the same inner diameter and are larger than the inner diameter of the sound-absorbing holes in said core.

4. The acoustic composite panel according to claim 1, wherein a protective layer is disposed on each of the two aluminum sheet layers.

5. The acoustic composite panel of claim 4, wherein the protective layer is a paint finish.

6. The acoustic composite panel of claim 1, wherein the core is an aluminum alloy.

7. The acoustical composite panel of claim 1, wherein said acoustical absorbent is acoustical cotton.

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