TWI523764B - Method of manufacturing three - dimensional sound - absorbing panel - Google Patents

Description

Method for manufacturing stereo sound absorbing panel

The present invention provides a method for manufacturing a sound absorbing structure of a building material, a decoration or a device, and more particularly to a method for manufacturing a three-dimensional sound absorbing panel.

The general flat sound absorbing panels are mostly composed of simple fiber slabs, or some surface textures are carved on the fiber slabs for sound absorption. However, such common sound absorbing panels have poor sound absorption angle and full frequency sound absorbing effect, and even Poor reflection and interference sources can be generated, resulting in a significant reduction in the function of the sound absorbing panels.

In order to achieve a better sound absorbing effect, a stereo sound absorbing groove or a sound absorbing block is provided on the sound absorbing panel, which is a means for improving the performance of the sound absorbing panel. For example, the method for manufacturing a three-dimensional sound absorbing panel of the domestic patent publication No. 473585 mainly combines artificial and natural fibers with a hot-melt material to form a sound-absorbing substrate of a considerable thickness, and then cuts the fire-resistant fabric and then cuts it. The size of the size is placed in a mold with concave and convex shape. According to the thickness and characteristics of the sound-absorbing substrate, the high-pressure high-temperature is used for hot pressing for a period of time, and then taken out and cooled, thereby forming a sash that can be directly laid or used. It is a stereo sound-absorbing panel that does not require on-site cutting and has excellent sound-absorbing effects, suitable three-dimensional shape and color matching, and can effectively improve sound quality and its manufacturing method.

However, the manufacturing method of the stereoscopic sound absorbing panel of the above-mentioned publication No. 473585 is too complicated, and the generated concave-convex shape has a limited sound absorbing effect, especially using a hot-melt material, and it is easy to cause the sound-absorbing sheet to be easily deformed and other susceptible due to an increase in the ambient temperature. Damage, insufficient structural stress, In view of this, the inventors have provided a better manufacturing method to make the production of the three-dimensional sound absorbing panel easier, more durable, and better in sound absorbing effect.

The main object of the present invention is to provide a method for manufacturing a three-dimensional sound absorbing panel which has a better sound absorbing effect, a more stable structure and a simpler manufacturing process. In order to achieve the above object, the method for manufacturing a three-dimensional sound absorbing panel of the present invention comprises at least the following steps: a step of preparing a fiber raw material; and a step of mixing a thermosetting plasticizer by uniformly mixing the thermosetting plasticizer with the fiber raw material to form Mixing stocking; a hot press curing forming step, placing the mixed stock into a mold for hot press forming, so that the mixed stock material is solidified and integrally formed, and forming a three-dimensional sound absorbing panel with a plate shape and a plurality of three-dimensional sound absorbing grooves on the surface The sound absorbing groove comprises a trap portion surrounded by a recess and a cone having a convex shape at the center of the trap portion; and a cooling step is a stereoscopic sound absorbing panel formed by hot press curing, and the stereo sound absorbing panel is cooled back. After the normal temperature, the finished product of the stereo sound absorbing panel is obtained. Thereby, the structure of the three-dimensional sound absorbing panel is further strengthened and stabilized by the mixing of the thermosetting plasticizer and the formation of the pressure rib, and the sound source can be dispersed into the trap portion to be maximized at the full frequency (including the low frequency) when being transmitted to the cone. ) Sound absorption effect.

In practice, the three-dimensional sound absorbing groove is preferably a hexagonal groove, and the tapered body is preferably a hexagonal vertebral body.

The hot press curing molding step is preferably performed by thermosetting at 200 to 250 degrees Celsius.

The fiber raw material preferably comprises one of cotton, hemp, rayon, and coconut silk.

The thermosetting plasticizer is preferably a thermosetting resin.

It is preferred that the mixed stock contains 15% to 25% of a thermosetting plasticizer.

A plurality of reinforcing pressure ribs are formed around the sound absorbing groove.

The periphery of the cone has a plurality of reinforcing compression ribs.

The sound absorbing groove has a plurality of reinforcing pressure ribs therein.

The surface of the three-dimensional sound absorbing panel has a plurality of reinforcing pressure ribs.

Compared with the prior art, the manufacturing method of the stereo sound absorbing panel of the present invention can produce a better full-frequency sound absorbing effect, and can make the stereo sound absorbing panel obtain a stronger and stable structure in an integrally formed manner, and is more durable and can be molded. The mass production method is mass-produced to match various frameworks in different usage environments.

(S1) ‧‧‧Preparation of fiber raw materials

(S2) ‧‧‧Hybrid thermosetting plasticizer step

(S3)‧‧‧Hot-pressure curing molding step

(S4) ‧‧‧Cooling step

(S5)‧‧‧Complete products

(10)‧‧‧Three-dimensional sound-absorbing panels

(20) ‧‧‧ Sound absorbing slots

(21) ‧‧‧Trap Department

(22) ‧‧‧ cone

(30) ‧ ‧ reinforced compression ribs

(40) ‧‧‧Framework

First Fig. is a schematic view showing a manufacturing method of a preferred embodiment of the three-dimensional sound absorbing panel of the present invention.

Second drawing: Schematic diagram of the finished product of the preferred embodiment of the three-dimensional sound absorbing panel of the present invention.

Figure 3 is a cross-sectional view showing the finished product of the preferred embodiment of the present invention.

Fourth figure: A partial enlarged view of the third figure.

Figure 5 is a schematic view showing the use of the finished product of the preferred embodiment of the present invention.

In the following, according to the technical means of the present invention, the preferred embodiments will be described in conjunction with the drawings. Referring to the first embodiment and the second figure, a schematic diagram of a manufacturing method of a three-dimensional sound absorbing panel and a finished product of a three-dimensional sound absorbing panel according to a preferred embodiment of the present invention are shown.

The method for manufacturing a three-dimensional sound absorbing panel is disclosed, which comprises at least the following steps: a fiber raw material preparation step (S1), a mixed thermosetting plasticizer step (S2), a hot press curing molding step (S3), and a cooling. Step (S4) to obtain a finished product (S5) of a stereoscopic sound absorbing panel (10).

The fiber raw material of the fiber raw material preparation step (S1) comprises cotton, hemp, rayon, One of the coconut filaments may be a raw material which has similar or similar properties to the respective fiber raw materials described above.

The step of mixing the thermosetting plasticizer (S2) is to mix the thermosetting plasticizer with the fiber raw material to form a mixed preparation, and the thermosetting plasticizer is preferably a thermosetting resin, and the content of the thermosetting plasticizer in the preparation is mixed. 15% to 25% is preferred.

The hot press curing molding step (S3) is to place the mixed stock into a mold for hot press forming to solidify the mixed stock.

The cooling step (S4) is a stereoscopic sound absorbing panel (10) which is formed by hot press curing, and the finished product of the stereo sound absorbing panel (10) is obtained after the stereoscopic sound absorbing panel (10) is cooled back to normal temperature.

The step of the hot-press curing forming step (S3) is to form a three-dimensional sound absorbing panel (10) having a plate shape and a plurality of three-dimensional sound absorbing grooves (20) on the surface, and a plurality of strengthening additions are simultaneously formed on the periphery of each sound absorbing groove (20). The ribs (30) are used to strengthen the overall structure of each of the sound absorbing grooves (20) and the three-dimensional sound absorbing plate (10).

Please refer to the second and third figures and the fourth figure, wherein the third drawing is a cross-sectional view of the finished product of the preferred embodiment of the present invention, and the fourth drawing is a partial enlarged view of the third drawing; the sound absorbing groove (20) includes a trap portion (21) surrounding the recessed shape and a conical body (22) protruding in the center of the trap portion (21). The trap portion (21) is a hexagonal groove and the cone (22) is a hexagon. In the case of the vertebral body, it is the best condition; in addition to the periphery of the sound absorbing groove (20), it can be formed at the periphery of the cone (22), the sound absorbing groove (20), and the plane of the three-dimensional sound absorbing plate (10). a plurality of reinforcing pressure ribs (30) to further strengthen the structure of the entire sound absorbing groove (20) and the three-dimensional sound absorbing plate (10); the sound source can be dispersed into the trap portion (21) when being transmitted to the cone body (22), The stereo sound absorbing panel (10) can perform full frequency sound absorption.

Please refer to the fifth figure, which is a use form of the finished product of the preferred embodiment of the present invention. Schematic; the integrated three-dimensional sound-absorbing panel (10) is durable, sturdy, beautiful, full-frequency sound-absorbing effect, easy to manufacture, and can be fitted with various frames (40) for modular installation. Building materials, decorating or various sound absorbing equipment.

(S1) ‧‧‧Preparation of fiber raw materials

(S2) ‧‧‧Hybrid thermosetting plasticizer step

(S3)‧‧‧Hot-pressure curing molding step

(S4) ‧‧‧Cooling step

(S5)‧‧‧Complete products

Claims (10)

A method for manufacturing a three-dimensional sound absorbing panel, comprising at least the following steps: a step of preparing a fiber raw material; and a step of mixing a thermosetting plasticizer to uniformly mix the thermosetting plasticizer with the fiber raw material to form a mixed preparation; a curing molding step, the mixed preparation is placed in a mold for hot press forming, so that the mixed preparation is solidified and integrally formed, and a three-dimensional sound absorbing panel having a plate shape and a plurality of three-dimensional sound absorbing grooves is disposed on the surface, and the sound absorbing groove comprises a a trap portion surrounding the recessed shape and a conical body protruding in the center of the trap portion; a cooling step is a stereoscopic sound absorbing panel formed by hot press curing, and the stereo sound absorbing panel is cooled to normal temperature to obtain a stereo sound absorbing sound. The finished product of the board. The method of manufacturing a three-dimensional sound absorbing panel according to claim 1, wherein the trap portion is a hexagonal groove, and the tapered body is a hexagonal vertebral body. The method for producing a three-dimensional sound absorbing panel according to claim 1, wherein the method of hot-press curing is performed at a temperature of 200 to 250 degrees Celsius. The method for manufacturing a three-dimensional sound absorbing panel according to claim 1, wherein the fiber raw material comprises one of cotton, hemp, rayon, and coconut silk. The method for producing a three-dimensional sound absorbing panel according to claim 1, wherein the thermosetting plasticizer is a thermosetting resin. The method for producing a three-dimensional sound absorbing panel according to claim 1, wherein the mixed preparation contains 15% to 25% of a thermosetting plasticizer. The method for manufacturing a three-dimensional sound absorbing panel according to claim 1, wherein the periphery of the sound absorbing groove A plurality of reinforcing compression ribs are formed. The method for manufacturing a three-dimensional sound absorbing panel according to claim 1, wherein the periphery of the cone has a plurality of reinforcing pressure ribs. The method for manufacturing a three-dimensional sound absorbing panel according to claim 1, wherein the sound absorbing groove has a plurality of reinforcing pressure ribs. The method for manufacturing a three-dimensional sound absorbing panel according to claim 1, wherein the three-dimensional sound absorbing panel has a plurality of reinforcing pressure ribs at a plane.