CN-224210135-U - Sound insulation plywood

CN224210135UCN 224210135 UCN224210135 UCN 224210135UCN-224210135-U

Abstract

The utility model aims to provide a sound insulation plywood which comprises an inner layer frame, two surface blocks and a plurality of core plates, wherein the inner layer frame is provided with a plurality of inner holes, the two surface blocks are respectively adhered to two opposite side surfaces of the inner layer frame, so that the two surface blocks and the inner holes respectively form a plurality of inner cavities, each core plate is arranged in each inner cavity in a one-to-one correspondence manner, and the two side surfaces of each core plate are respectively adhered to the two surface blocks. Therefore, the inner layer frame provides support for the whole board body, the integral structural strength of the formed plywood is effectively ensured, warping at local positions is avoided, the inner layer frame is internally filled with the plurality of core boards at intervals, and sound waves are reflected and absorbed by the core boards, so that the sound insulation plywood has good sound insulation effect.

Inventors

WANG JING
ZHENG CHANGMING
WU DONGYAO

Assignees

惠州市益群木业有限公司

Dates

Publication Date: 20260508
Application Date: 20250425

Claims (9)

1.A sound insulation plywood, comprising: The inner layer frame is provided with a plurality of inner holes; Two surface blocks respectively adhered to two opposite sides of the inner layer frame to form a plurality of inner cavities with the inner holes, and The core plates are arranged in the inner cavities in a one-to-one correspondence manner, and two side surfaces of each core plate are respectively bonded with the two surface blocks.
2. The soundproof plywood according to claim 1, wherein said inner layer frame comprises a plurality of cross bars and a plurality of longitudinal bars, each of said cross bars and each of said longitudinal bars being sequentially staggered to form said inner layer frame, and wherein an inner hole is formed between any adjacent two of said cross bars and two of said longitudinal bars.
3. The soundproof plywood according to claim 2, wherein said cross bars are provided with a plurality of first grooves at intervals, said longitudinal bars are provided with a plurality of second grooves at intervals, and each of said first grooves is fastened to one of said second grooves.
4. A sound insulating plywood according to claim 3, wherein the thickness of the cross-bars corresponds to the thickness of the longitudinal bars, the depth of the first grooves corresponds to the depth of the second grooves, and the sum of the depth of the first grooves and the depth of the second grooves is equal to the thickness of the cross-bars/the longitudinal bars.
5. A sound insulating plywood panel according to claim 3, wherein the inner side walls of the first recess are bonded to the inner side walls of the second recess.
6. The soundproof plywood according to claim 3, wherein a first through hole is formed in the inner bottom wall of the first groove, a second through hole is formed in the inner side wall of the second groove, the second through hole is communicated with the first through hole, and a pin shaft is arranged in the first through hole and the second through hole in a penetrating mode.
7. The acoustic plywood of claim 6 wherein said cross bars, said longitudinal bars, and said pins are wood.
8. The acoustic plywood of claim 1 wherein said core has a plurality of honeycomb holes formed therein.
9. The acoustic plywood of claim 8 wherein said core is cork oak bark.

Description

Sound insulation plywood Technical Field The utility model relates to the technical field of plywood, in particular to a sound insulation plywood. Background Plywood is a common composite board, and is usually formed by laminating multiple layers of wood veneers through adhesives. Although the structure of staggered textures between layers can improve the mechanical property, the structure has obvious defects in the aspects of sound insulation and noise reduction. Because the acoustic impedance of the wood is low, and the traditional plywood structure lacks effective acoustic optimization design, the barrier capability of the traditional plywood structure to air sound transmission (such as human voice and traffic noise) and structure sound transmission (such as vibration conduction) is insufficient, and the requirements of the fields of modern buildings, vehicles and the like on increasingly severe sound insulation performance are difficult to meet. In the prior art, in order to improve the sound insulation effect of the plywood, an additional sound insulation layer is generally adopted, for example, a sound absorbing material such as mineral wool, foamed plastic and the like is added in a plate interlayer. However, after a certain period of use, the sound absorbing material layer is easy to expand due to damp, so that the sound insulation effect is reduced, and even the whole plywood is deformed and warped, and the durability is poor. Accordingly, in order to solve the above-described drawbacks, the soundproof plywood of the present application has been proposed. Disclosure of utility model The utility model aims to overcome the defects in the prior art and provides the sound insulation plywood which is stable in structure and effectively improves the sound insulation effect. The aim of the utility model is realized by the following technical scheme: A sound-insulating plywood, comprising: The inner layer frame is provided with a plurality of inner holes; Two surface blocks respectively adhered to two opposite sides of the inner layer frame to form a plurality of inner cavities with the inner holes, and The core plates are arranged in the inner cavities in a one-to-one correspondence manner, and two side surfaces of each core plate are respectively bonded with the two surface blocks. Optionally, the inner layer frame includes a plurality of horizontal bars and a plurality of vertical bars, each horizontal bar and each vertical bar are alternately connected in turn to form the inner layer frame, and two arbitrary adjacent horizontal bars and two vertical bars form an inner hole therebetween. Optionally, a plurality of first grooves are spaced apart on the transverse bar, a plurality of second grooves are spaced apart on the longitudinal bar, and each first groove is buckled with one second groove. Optionally, the thickness of the cross bar is consistent with the thickness of the longitudinal bar, the depth of the first groove is consistent with the depth of the second groove, and the sum of the depth of the first groove and the depth of the second groove is equal to the thickness of the cross bar/the longitudinal bar. Optionally, the inner side wall of the first groove is bonded with the inner side wall of the second groove. Optionally, a first via hole is formed in the inner bottom wall of the first groove, a second via hole is formed in the inner side wall of the second groove, the second via hole is communicated with the first via hole, and a pin shaft is arranged in the first via hole in a penetrating mode. Optionally, the transverse strips, the longitudinal strips and the pin shafts are all made of wood. Optionally, a plurality of honeycomb holes are formed in the core plate. Optionally, the core is cork oak bark. Compared with the prior art, the utility model has at least the following advantages: The utility model relates to a sound insulation plywood which comprises an inner layer frame, two surface blocks and a plurality of core plates, wherein the inner layer frame is provided with a plurality of inner holes, the two surface blocks are respectively adhered to two opposite side surfaces of the inner layer frame, so that the two surface blocks and the inner holes respectively form a plurality of inner cavities, each core plate is arranged in each inner cavity in a one-to-one correspondence manner, and the two side surfaces of each core plate are respectively adhered to the two surface blocks. Therefore, the inner layer frame provides support for the whole board body, so that the integral structural strength of the formed plywood is effectively ensured, and the local position is prevented from warping. Furthermore, a plurality of core plates are filled in the inner layer frame at intervals, and sound waves are reflected and absorbed by the core plates, so that the sound insulation plywood has good sound insulation effect. Drawings In order to more clearly illustrate the technical solutions of the emb