CN112738668A - Sound box shell and 3D printing manufacturing process thereof - Google Patents
Sound box shell and 3D printing manufacturing process thereof Download PDFInfo
- Publication number
- CN112738668A CN112738668A CN202011486141.0A CN202011486141A CN112738668A CN 112738668 A CN112738668 A CN 112738668A CN 202011486141 A CN202011486141 A CN 202011486141A CN 112738668 A CN112738668 A CN 112738668A
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- Prior art keywords
- sound box
- box shell
- hole
- printing
- shell
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R2201/029—Manufacturing aspects of enclosures transducers
Abstract
The invention relates to the technical field of sound box manufacturing and 3D printing, in particular to a sound box shell and a 3D printing manufacturing process thereof. A group of through holes are distributed on the sound box shell, one side or two sides of each through hole are in a bell mouth shape, the section of the bell mouth wall is two inclined straight lines, and the included angle between each inclined straight line and the normal line of the surface of the shell is within the range of 30-60 degrees; the wall thickness of the sound box shell is more than or equal to 1mm, and the minimum diameter of the through hole is within the range of 0.6mm-1 mm; the sound box shell is obtained by printing through an SLS process. Experimental research shows that under the limit of the same SLS printer precision, the sound box shell manufactured by printing according to the standards has better hole roundness and smoother surface.
Description
Technical Field
The invention relates to the technical field of sound box manufacturing and 3D printing, in particular to a sound box shell and a 3D printing manufacturing process thereof.
Background
The audio amplifier shell is one of the indispensable parts of audio amplifier, and the shell of current audio amplifier equipment is mostly porous structure, mostly through metal punching press back weld forming, and the processing step is loaded down with trivial details, and the cost is higher. Compared with the traditional mode, the 3D printing and manufacturing of the loudspeaker box shell has the advantages of being capable of being customized, capable of being printed, integrally formed in a complex structure and the like, but is limited by the current development level of the 3D printing technology (such as selective laser sintering forming technology SLS), the precision of the formed small aperture is not high, the loudspeaker box shell requires the aperture to be small and round, and otherwise, the internal structure is exposed and is not attractive.
Disclosure of Invention
Aiming at the defects in the prior art, the majority of technicians devote themselves to improving the 3D printing technology for a long time, such as improving process parameters and optimizing raw material formulas, but the development is slow all the time, and the actual use needs are still difficult to meet. The invention develops a new method, and from the angle of structural design, the internal correlation between the hole structure and the SLS forming effect is researched, so that the sound box shell structure which is specially oriented to the SLS printing technology and easy to print with high precision is designed, a hole with better roundness and smoother surface is punched under the condition of the same SLS printer precision and the same minimum inner diameter, the processing difficulty is reduced, and the process of applying the 3D technology to the industrial manufacturing of the sound box shell is promoted.
A loudspeaker box shell is provided, wherein a group of through holes are distributed on the shell, one side or two sides of each through hole are in a bell mouth shape, the section of the bell mouth wall is two inclined straight lines, and the included angle between each inclined straight line and the normal line of the surface of the shell is within the range of 30-60 degrees; the wall thickness of the sound box shell is more than or equal to 1mm, and the minimum diameter of the through hole is within the range of 0.6mm-1 mm; the loudspeaker box shell is obtained by printing through an SLS process. Experimental research shows that under the limit of the same SLS printer precision, the sound box shell manufactured by printing according to the standards has better hole roundness and smoother surface.
Further, the sound box housing is preferably manufactured by SLS printing using a thermoplastic material as a raw material, the thermoplastic material is preferably a thermoplastic material with a particle size of hundreds of microns, and the sintering temperature is preferably 170 ℃.
Furthermore, in the sound box housing, the through holes are distributed on the sound box housing in a rectangular array.
Furthermore, in the sound box casing, the through holes are the same in shape and size.
Furthermore, in the sound box housing, the inner wall of the sound box housing is also integrally provided with reinforcing ribs, and the reinforcing ribs are preferably distributed in a rectangular grid shape.
Has the advantages that:
(1) the invention provides a series of hole structures which are easy for SLS high-precision printing, and the sound box shell is manufactured on the basis, so that holes with better roundness and smoother surface are punched under the conditions of the same printer precision and the same minimum inner diameter, and the sound box shell meeting the requirements is obtained by the SLS technology by exerting the advantages of 3D printing.
(2) The reinforcing ribs are designed on the inner wall of the sound box shell, so that the sound box shell with thin wall thickness and good rigidity can be obtained, and the cost of raw materials is reduced.
(3) One side or two sides of the through hole are designed into a horn mouth shape, so that the appearance design requirement of the sound box is considered, the sound playing effect is promoted, and the sound playing which is finer and smoother than a straight hole can be obtained.
Drawings
Fig. 1 is a schematic view of the overall shape of the enclosure of the loudspeaker.
Figure 2 is a schematic view of a reinforcing bar.
FIG. 3 is a design and micrograph of a sample.
FIG. 4 is a physical diagram of a sample.
Detailed Description
The invention is further illustrated by the following specific examples, which are illustrative and intended to illustrate the problem and explain the invention, but not limiting.
Example 1
A sound box shell and a 3D printing manufacturing process thereof.
(1) Design hole section structure, wherein hole horizontal plane and vertical pore wall contained angle are 30, and 2 mm's of wall thickness audio amplifier shell can print the leading-in 3D printer of structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Example 2
(1) Design hole section structure, wherein hole horizontal plane and vertical pore wall contained angle are 45, and 2 mm's of wall thickness audio amplifier shell can print the leading-in 3D printer of structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Example 3
(1) Design hole section structure, wherein hole horizontal plane and vertical pore wall contained angle are 60, and 2 mm's of wall thickness audio amplifier shell can print the leading-in 3D printer of structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Comparative example 1
(1) The same circular through-hole of design 1mm diameter, the wall thickness is 1 mm's audio amplifier shell, and the leading-in 3D printer of structural type with the design can print.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing screen cover structure is powder with hundred micron-sized particle size, and the sintering and forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation, measurement and comparison of the roundness of the through hole.
Comparative example 2
(1) The section in design hole is ARC structure, and wherein the section is x for y, and hole horizontal plane and vertical pore wall contained angle are 45 promptly, and 1 mm's of wall thickness audio amplifier shell can print the leading-in 3D printer of structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing screen cover structure is powder with hundred micron-sized particle size, and the sintering and forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Comparative example 3
(1) The section of the designed hole is of a cambered surface structure, wherein the section function curve is that y is equal to xn，n>1, the audio amplifier shell of wall thickness 1mm can be printed with the leading-in 3D printer of the structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Comparative example 4
(1) The section of the designed hole is of a cambered surface structure, wherein the section function curve is that y is equal to x1/n， n>1, the audio amplifier shell of wall thickness 1mm can be printed with the leading-in 3D printer of the structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Comparative example 5
(1) Design hole section structure, wherein hole horizontal plane and vertical pore wall contained angle are 15, and 1 mm's of wall thickness audio amplifier shell can print the leading-in 3D printer of structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Comparative example 6
(1) Design hole section structure, wherein hole horizontal plane and vertical pore wall contained angle are 20, and 1 mm's of wall thickness audio amplifier shell can print the leading-in 3D printer of structural type of design.
(2) The 3D printer adopts the SLS selectivity laser sintering printer.
(3) The 3D of audio amplifier shell prints and utilizes SLS selectivity laser sintering technique, and the printing raw materials adopts thermoplastic material, utilizes the laser instrument to scan the powder layer by layer under the control of computer and shines, realizes thermoplastic material's sintering bonding, piles up layer by layer and realizes the shaping.
(4) The thermoplastic material adopted by the 3D printing sound box shell is powder with hundred micron-sized particle size, and the sintering forming temperature of the nylon material is 170 ℃. The particle size and the molding temperature of the thermoplastic material are all possible ones to be adopted in the invention, and the particle size and the molding temperature of the nylon adopted in the 3D printed sound box shell include, but are not limited to, the above possibilities.
(5) And taking the product out of the printer, and removing powder on the surface of the product.
(6) And putting the product into a microscope for observation and measurement to compare the roundness of the hole.
Fig. 1 shows a pattern of the overall shape of the enclosure of the sound box, and fig. 2 shows a pattern of the reinforcing ribs of the inner wall of the enclosure of the sound box. Table 1 summarizes the appearance of the products obtained in the examples and comparative examples. The pore structure of each example and each comparative design is summarized in the second column of fig. 3. A comparison of micrographs and CAD models for each example and each comparative sample is summarized in the third column of fig. 3, where the ring-shaped white line is the outline of the actual hole shown in the micrograph. A two-sided physical map of each example and each comparative sample is summarized in fig. 4.
In summary, according to the method of the present invention, a vent and a sound box casing having superior comprehensive performance can be obtained.
TABLE 1
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. The utility model provides a speaker shell, it has a set of through hole to distribute on the shell, its characterized in that: one side or two sides of the through hole are in a bell mouth shape, the section of the bell mouth wall is two inclined straight lines, and the included angle between the inclined straight lines and the normal line of the surface of the shell is within the range of 30-60 degrees; the wall thickness of the sound box shell is more than or equal to 1mm, and the minimum diameter of the through hole is within the range of 0.6mm-1 mm; the loudspeaker box shell is obtained by printing through an SLS process.
2. The enclosure of claim 1, wherein: made by SLS printing using a thermoplastic material as a starting material.
3. The enclosure of claim 2, wherein: the thermoplastic material is preferably a thermoplastic material having a particle size in the order of hundreds of microns.
4. The enclosure of claim 3, wherein: the sintering and forming temperature is 170 ℃.
5. The enclosure of claim 1, wherein: the through holes are distributed on the sound box shell in a rectangular array.
6. The enclosure of claim 5, wherein: the shape and the size of each through hole are the same.
7. The enclosure of claim 6, wherein: the inner wall of the sound box shell is also integrally provided with reinforcing ribs which are distributed in a rectangular grid shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011486141.0A CN112738668A (en) | 2020-12-16 | 2020-12-16 | Sound box shell and 3D printing manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011486141.0A CN112738668A (en) | 2020-12-16 | 2020-12-16 | Sound box shell and 3D printing manufacturing process thereof |
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| Publication Number | Publication Date |
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| CN112738668A true CN112738668A (en) | 2021-04-30 |
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| CN202011486141.0A Pending CN112738668A (en) | 2020-12-16 | 2020-12-16 | Sound box shell and 3D printing manufacturing process thereof |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201967084U (en) * | 2011-03-18 | 2011-09-07 | 浙江恒科实业有限公司 | Rotating deformation sound box |
| CN204168461U (en) * | 2013-06-04 | 2015-02-18 | 格尔德·科克 | Loud speaker |
| CN205249489U (en) * | 2015-12-31 | 2016-05-18 | 深圳市易拓迈克科技有限公司 | Synthetic shell structure of audio amplifier metal plastic |
| CN206865675U (en) * | 2017-04-20 | 2018-01-09 | 深圳市上善工业设计有限公司 | A kind of casing of loudspeaker box and intelligent sound box |
| CN108370463A (en) * | 2015-10-30 | 2018-08-03 | 横向技术有限公司 | The casing of audio tweeter |
| CN208158846U (en) * | 2018-05-10 | 2018-11-27 | 冯颜明 | A kind of EVA speaker |
| CN209250283U (en) * | 2018-11-12 | 2019-08-13 | 黄智胜 | Charging unit with acoustic function |
| CN209462573U (en) * | 2018-12-13 | 2019-10-01 | 深圳市冠旭电子股份有限公司 | A kind of intelligent sound box |
| CN110967077A (en) * | 2018-10-01 | 2020-04-07 | 丹尼尔测量和控制公司 | Ultrasonic transducer with sealed 3D printed micro horn array |
| WO2020126212A1 (en) * | 2018-12-20 | 2020-06-25 | Danfoss A/S | Noise absorbing jacket made in a 3d printing process |
-
2020
- 2020-12-16 CN CN202011486141.0A patent/CN112738668A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201967084U (en) * | 2011-03-18 | 2011-09-07 | 浙江恒科实业有限公司 | Rotating deformation sound box |
| CN204168461U (en) * | 2013-06-04 | 2015-02-18 | 格尔德·科克 | Loud speaker |
| CN108370463A (en) * | 2015-10-30 | 2018-08-03 | 横向技术有限公司 | The casing of audio tweeter |
| CN205249489U (en) * | 2015-12-31 | 2016-05-18 | 深圳市易拓迈克科技有限公司 | Synthetic shell structure of audio amplifier metal plastic |
| CN206865675U (en) * | 2017-04-20 | 2018-01-09 | 深圳市上善工业设计有限公司 | A kind of casing of loudspeaker box and intelligent sound box |
| CN208158846U (en) * | 2018-05-10 | 2018-11-27 | 冯颜明 | A kind of EVA speaker |
| CN110967077A (en) * | 2018-10-01 | 2020-04-07 | 丹尼尔测量和控制公司 | Ultrasonic transducer with sealed 3D printed micro horn array |
| CN209250283U (en) * | 2018-11-12 | 2019-08-13 | 黄智胜 | Charging unit with acoustic function |
| CN209462573U (en) * | 2018-12-13 | 2019-10-01 | 深圳市冠旭电子股份有限公司 | A kind of intelligent sound box |
| WO2020126212A1 (en) * | 2018-12-20 | 2020-06-25 | Danfoss A/S | Noise absorbing jacket made in a 3d printing process |
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