CN111279722A - Method for manufacturing cone capable of improving sound performance of loudspeaker and cone - Google Patents
Method for manufacturing cone capable of improving sound performance of loudspeaker and cone Download PDFInfo
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- CN111279722A CN111279722A CN201980003380.5A CN201980003380A CN111279722A CN 111279722 A CN111279722 A CN 111279722A CN 201980003380 A CN201980003380 A CN 201980003380A CN 111279722 A CN111279722 A CN 111279722A
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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
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Abstract
The application discloses a cone manufacturing method for improving the sound performance of a loudspeaker and a cone, wherein the cone manufacturing method comprises the steps of pulping unbleached sulfate pulp, straws and carbon fibers to obtain first pulp, wherein the unbleached sulfate pulp, the straws and the carbon fibers are 70% of unbleached sulfate pulp, 15% of straws and 15% of carbon fibers in proportion; mixing sizing material, a precipitating agent and dye with the first slurry by adopting a stirring device to obtain second slurry, wherein the viscosity of the second slurry is different from that of the first slurry; carrying out molding treatment on the second slurry to obtain a paper basin blank; sequentially passing the cone blank through an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot-pressing mold to obtain a hot-pressed cone; and carrying out post-treatment on the paper cone formed by hot pressing to obtain a composite paper cone so as to obtain a high-quality paper cone and further improve the sound performance of the loudspeaker.
Description
Technical Field
The application relates to the field of speakers, in particular to a cone manufacturing method for improving sound performance of a speaker and a cone.
Background
The cone material of the speaker is basically paper due to the softness of the paper to transmit sound and the low price of the paper material. In order to obtain better sound effect and improve sound quality, certain other materials are mixed in the material of the cone according to the own sound test effect, and the different materials and the mixing proportion form different sound performance of the cone in improving sound. Some sounds coming out of the existing common loudspeaker cone are not mellow in bass, not beautiful enough in medium frequency and not transparent enough in treble, so that great trouble is caused to manufacturers and users.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Technical solution
The application mainly aims to provide a cone manufacturing method for improving the sound performance of a loudspeaker and a cone, and aims to solve the technical problem that the sound performance of the existing paper loudspeaker is not perfect.
In order to achieve the above object, the present application provides a method for manufacturing a cone for improving sound performance of a speaker, including the steps of:
carrying out pulping treatment on unbleached sulfate pulp, straws and carbon fibers to obtain first pulp, wherein the unbleached sulfate pulp, the straws and the carbon fibers are 70% of unbleached sulfate pulp, 15% of straws and 15% of carbon fibers in proportion;
mixing sizing material, a precipitating agent and dye with the first slurry by adopting a stirring device to obtain second slurry, wherein the viscosity of the second slurry is different from that of the first slurry;
carrying out molding treatment on the second slurry to obtain a paper basin blank;
sequentially passing the cone blank through an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot-pressing mold to obtain a hot-pressed cone;
and carrying out post-treatment on the paper cone formed by hot pressing to obtain the composite paper cone.
Preferably, the unbleached sulfate pulp, the straws and the carbon fibers are placed in a water tank for soaking;
taking out the soaked unbleached sulfate pulp, the straws and the carbon fibers, and decomposing the soaked unbleached sulfate pulp, the straws and the carbon fibers by adopting a beater to obtain initial pulp;
the initial slurry is placed in a refiner for processing to obtain a first slurry.
Preferably, the soaking time is at least 1 hour and not more than 10 hours, the soaking temperature is at least 22 ℃ and not more than 28 ℃, and the rotation speed of the beater is at least 80 rpm and not more than 150 rpm.
Preferably, the second slurry is put into an automatic or semi-automatic hot press for hot pressing treatment;
sending the second slurry subjected to the hot pressing treatment into a scooping machine by using a vacuum pump for scooping;
and placing the fished second slurry in a raw material groove to obtain a paper basin blank.
Preferably, a punching die of a punching machine is adopted, the outer edge of the hot-press formed paper cone is cut off, and a middle hole is cut in the hot-press formed paper cone to obtain a paper cone with a whole edge;
and sequentially carrying out spraying and paper cone punching on the paper cone with the whole edge to obtain the composite paper cone.
Preferably, an infrared ray or electric heating dryer is adopted to dry the paper basin with the whole edge;
spraying the dried paper basin with a spraying agent, an impregnating agent or a diluting material;
and cutting and bonding the paper cone subjected to spraying treatment by adopting a cutting device to obtain the conical composite paper cone.
Preferably, the composite cones are perspective-looked one by one and weighed to obtain a target composite cone meeting the quality requirement.
In addition, in order to achieve the purpose, the application also provides a cone for improving the sound performance of the loudspeaker, which is prepared by the manufacturing method of the cone for improving the sound performance of the loudspeaker, wherein the cone is composed of unbleached sulfate pulp, straw and carbon fiber.
Preferably, the unbleached sulfate pulp, straw and carbon fiber are formulated in a ratio of 70% unbleached sulfate pulp, 15% straw and 15% carbon fiber.
The application provides a cone manufacturing method for improving sound performance of a loudspeaker, wherein unbleached sulfate pulp, straw and carbon fiber are subjected to pulping treatment to obtain first pulp, wherein the unbleached sulfate pulp, the straw and the carbon fiber are 70% unbleached sulfate pulp, 15% straw and 15% carbon fiber in formula proportion, then a stirring device is adopted to mix glue, a precipitating agent and dye with the first pulp to obtain second pulp, the viscosity of the second pulp is different from that of the first pulp, the second pulp is subjected to forming dragging treatment to obtain a cone blank, the cone blank is sequentially subjected to an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot-pressing mold to obtain a hot-pressed cone, the hot-pressed cone is subjected to post-treatment to obtain a composite cone, and further the cone is formed by unbleached sulfate pulp, straw and carbon fiber, The straw and carbon fiber are made into unbleached sulfate pulp, the formula proportion of the straw and the carbon fiber is 70 percent of unbleached sulfate pulp, 15 percent of straw and 15 percent of carbon fiber, and based on the manufacturing method and the formula proportion, a high-quality cone is obtained, so that the sound performance of the loudspeaker is improved.
Drawings
FIG. 1 is a schematic flow chart illustrating a manufacturing method of a cone for improving the sound performance of a speaker according to a first embodiment of the present invention;
FIG. 2 is a table of fiber lengths of various materials of a first embodiment of a cone manufacturing method for improving the acoustic performance of a speaker according to the present application;
FIG. 3 is a flow chart of the unbleached kraft pulp of the first embodiment of the method for manufacturing a cone for improving the sound performance of a speaker according to the present application;
FIG. 4 is a schematic view illustrating a first embodiment of a cone manufacturing method for improving the sound performance of a speaker according to the present invention;
fig. 5 is a simplified schematic diagram of a cone manufacturing method for improving the sound performance of a speaker according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Modes for carrying out the invention
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of a first embodiment of a cone manufacturing method for improving sound performance of a speaker according to the present application.
The manufacturing method of the cone for improving the sound performance of the loudspeaker comprises the following steps:
step S10, carrying out pulping treatment on unbleached sulfate pulp, straws and carbon fibers to obtain first pulp, wherein the unbleached sulfate pulp, the straws and the carbon fibers are 70% of unbleached sulfate pulp, 15% of straws and 15% of carbon fibers in formula proportion;
in the embodiment of the application, unbleached sulfate pulp, straw and carbon fiber are used as raw materials to prepare the paper cone, wherein the unbleached sulfate pulp mainly comprises conifer pulp (commonly known as kraft paper) and unbleached sulfite pulp, the conifer pulp and the broadleaf pulp are used as the main raw materials, the unbleached sulfate pulp using the broadleaf pulp as the raw material has shorter fiber length, the strength of the unbleached sulfate pulp is only half of that of the unbleached sulfate pulp using the conifer pulp as the raw material, the lignin is more, the unbleached sulfate pulp has the advantages of hardness, brittleness, high strength and the like, furthermore, the fiber length of different materials is different, as shown in figure 2, the fiber length of the conifer pulp is more than that of the paper cone made of various materials, the paper cone made of the conifer sulfate pulp is found to have better rigidity through various experimental researches, and synthetic or natural materials with a certain proportion are added into the paper cone by a physical or chemical method to form the paper cone with changed performance, the method overcomes the defects of the paper basin and enhances the vitality of the paper basin, so the needle leaves are put into sulfuric acid for cooking, the unnecessary parts in the plant tissues are screened and removed, further decomposition and reaction are carried out to obtain unbleached sulfate pulp as the raw materials, the unbleached sulfate pulp as the raw materials is shown in figure 3, pyrite is crushed to obtain powdered pyrite powder for full reaction in the subsequent roasting process, the pyrite powder is sent into a roasting chamber for roasting and dedusting treatment, the roasted pyrite is put into an acid liquor tank and is modulated by cooking liquor to obtain cooking liquor, the needle leaf wood raw materials are collected, the needle leaf wood raw materials are sawed off, peeling, screening and the screened needle leaves are mixed with the cooking liquor for cooking, the mixture after cooking is put into a discharging tank for rough separation, then sequentially passing through a trap and a dehydrator, and finally carrying out pulping treatment to obtain unbleached sulfate pulp as a raw material.
Then, carrying out pulping treatment on unbleached sulfate slurry, straws and carbon fibers to obtain first slurry.
Further, step S10 also includes,
step S11, placing unbleached sulfate slurry, straws and carbon fibers into a water tank for soaking;
step S12, taking out the soaked unbleached sulfate pulp, the straws and the carbon fibers, and decomposing the soaked unbleached sulfate pulp, the straws and the carbon fibers by adopting a beater to obtain initial slurry;
and step S13, placing the initial slurry into a refiner for processing to obtain a first slurry.
In the step, unbleached sulfate pulp, straw and carbon fiber are placed in a water tank for soaking, wherein the soaking time is at least 1 hour and is not more than 10 hours, the soaking temperature is at least 22 ℃ and is not more than 28 ℃, and the specific time can be determined based on the softness of the unbleached sulfate pulp, straw and carbon fiber, then the soaked unbleached sulfate pulp, straw and carbon fiber are taken out, a beater is used for decomposing the soaked unbleached sulfate pulp, straw and carbon fiber, wherein the rotating speed of the beater is at least 80 revolutions per second and is not more than 150 revolutions per second, such as 100 revolutions per second, so as to obtain initial pulp, and then the initial pulp is placed in a refiner for processing so as to obtain first pulp, wherein the first pulp is pulp which passes a pulp precision test.
Step S20, mixing a sizing material, a precipitating agent and a dye with the first slurry by adopting a stirring device to obtain a second slurry, wherein the viscosity of the second slurry is different from that of the first slurry;
in the step, after obtaining the first slurry, mixing a sizing material, a precipitating agent and a dye with the first slurry by using a stirring device to obtain a second slurry, wherein the viscosity of the first slurry is different from that of the second slurry, the sizing material can be rosin size, aluminum sulfate, alum, bone meal, starch, casein, water glass, paraffin and the like, the precipitating agent can be calcium carbonate, magnesium hydroxide, barium sulfate and the like, and a filler, such as kaolin, can be properly added to enhance the toughness of the paper.
Step S30, carrying out molding treatment on the second slurry to obtain a cone blank;
in the step, after the second slurry is obtained, the second slurry is subjected to molding treatment to obtain a paper basin blank.
Specifically, step S30 includes the steps of,
step S31, putting the second slurry into an automatic or semi-automatic hot press for hot pressing;
step S32, sending the second slurry after the hot pressing treatment into a fishing machine by adopting a vacuum pump for fishing;
and step S33, placing the fished second slurry in a raw material groove to obtain the cone blank.
In the step, the second slurry is placed into an automatic or semi-automatic hot press for hot pressing treatment, then a vacuum pump is adopted to send the second slurry after the hot pressing treatment into a fishing forming machine for fishing, and then the fished second slurry is placed into a raw material groove to obtain a paper basin blank.
Step S40, sequentially passing the cone blank through an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot-pressing mold to obtain a hot-pressed cone;
in the step, after obtaining the cone blank, the cone blank sequentially passes through an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot pressing mold to obtain a hot-press formed cone, wherein the working environment of the automatic or semi-automatic hot press is 380V, the voltage and the working power of 50HZ are 7.5KW, further, the air pressure of compressed air is 0.4-0.6 Mpa, and the air flow is 0.7m3The vacuum degree of the vacuum pump is (-0.04) Mpa (-0.08) Mpa, the working temperature is controlled to be 160-250 ℃ based on an automatic temperature control device, furthermore, the upper die and the lower die of the paper basin hot pressing mould are positioned by a guide pillar, the total height of the lower die is controlled to be 100-120 mm, wherein the lower die comprises a fixed part, a heat insulation part, a heating part and a press screen plate, and a slurry back shaping bottom plate, a funnel dewatering die and an updraft separator are provided with positioning pins.
And step S50, carrying out post-treatment on the paper cone formed by hot pressing to obtain a composite paper cone.
In the step, after the hot-press formed cone is obtained, post-processing is performed on the hot-press formed cone to obtain the composite cone.
Specifically, step S50 includes the steps of,
step S51, cutting a die by a punching machine, cutting the outer edge of the hot-press formed cone, and cutting a middle hole in the hot-press formed cone to obtain a full-edge cone;
and step S52, sequentially carrying out spraying and paper cone punching on the paper cone with the whole edge to obtain the composite paper cone.
In the step, after the hot-press formed paper cone is obtained, a die is punched by a punching machine, then the outer side of the hot-press formed paper cone is cut off, and a middle hole is cut in the hot-press formed paper cone, so that the paper cone with the whole edge is obtained. And then, sequentially carrying out spraying and paper cone punching on the paper cone with the whole edge to obtain the composite paper cone.
Further, step S52 includes,
step S53, drying the paper cone with the whole edge by adopting an infrared ray or electric heating dryer;
step S54, spray-coating the dried paper cone by using a spray coating agent, an impregnating agent or a diluting material;
further, when the paper cone is subjected to spraying and paper cone punching processing, the paper cone is dried by an infrared or electric heating dryer, and then the dried paper cone is subjected to spraying processing by a spraying agent, a stain-soaking agent or a diluting material, wherein the spraying position is the cone position of the paper cone.
And step S55, cutting and bonding the paper cone subjected to spraying treatment by using a cutting device to obtain the conical composite paper cone.
In this step, after the paper cone is subjected to spraying treatment, a cutting device is used to cut and bond the paper cone subjected to spraying treatment to obtain a tapered composite paper cone, specifically, as shown in fig. 4, fig. 4 is the paper cone cutting and bonding treatment, a shadow part at the upper end of a left side partial diagram of fig. 4 is a paint spraying part, two dotted lines of the left side partial diagram are cutting lines, after cutting is performed based on the two cutting lines, the paper cone of a right side partial diagram of fig. 4 is obtained, and then, the left side and the right side are bonded to obtain the paper cone shown in fig. 5.
Further, after step S50, the method further includes,
and step S60, perspective and weighing the composite cones one by one to obtain the target composite cones meeting the quality requirements.
After the cone is obtained, the composite cones are perspective-weighed one by one to obtain a target composite cone meeting the quality requirement, wherein the perspective-weighing equipment comprises light perspective equipment, a balance, an automatic scale, resonant frequency Fo testing equipment and an inner diameter gauge, and the resonant frequency Fo testing equipment comprises an oscillator, an amplifier, a loudspeaker, a partition plate and display equipment.
The method for manufacturing the cone for improving the sound performance of the loudspeaker includes the steps of pulping unbleached sulfate pulp, straw and carbon fiber to obtain first pulp, mixing the unbleached sulfate pulp, the straw and the carbon fiber in a formula ratio of 70% of unbleached sulfate pulp, 15% of straw and 15% of carbon fiber with the first pulp by using a stirring device to obtain second pulp, wherein the viscosity of the second pulp is different from that of the first pulp, carrying out a forming process on the second pulp to obtain a cone blank, sequentially passing the cone blank through an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot-pressing mold to obtain a hot-press formed cone, carrying out post-treatment on the hot-press formed cone to obtain a composite cone, and further, carrying out post-treatment on the cone to obtain the composite cone by using the unbleached sulfate pulp, the straw and the carbon fiber, The straw and carbon fiber are made into unbleached sulfate pulp, the formula proportion of the straw and the carbon fiber is 70 percent of unbleached sulfate pulp, 15 percent of straw and 15 percent of carbon fiber, and based on the manufacturing method and the formula proportion, a high-quality cone is obtained, so that the sound performance of the loudspeaker is improved.
In addition, the paper cone is used for improving the sound performance of a loudspeaker and is prepared by the manufacturing method of the paper cone for improving the sound performance of the loudspeaker, the paper cone is composed of unbleached sulfate pulp, straw and carbon fibers, and the unbleached sulfate pulp, the straw and the carbon fibers are 70% of unbleached sulfate pulp, 15% of straw and 15% of carbon fibers.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (10)
1. A manufacturing method of a cone for improving the sound performance of a loudspeaker comprises the following steps:
carrying out pulping treatment on unbleached sulfate pulp, straws and carbon fibers to obtain first pulp, wherein the unbleached sulfate pulp, the straws and the carbon fibers are 70% of unbleached sulfate pulp, 15% of straws and 15% of carbon fibers in proportion;
mixing sizing material, a precipitating agent and dye with the first slurry by adopting a stirring device to obtain second slurry, wherein the viscosity of the second slurry is different from that of the first slurry;
carrying out molding treatment on the second slurry to obtain a paper basin blank;
sequentially passing the cone blank through an automatic or semi-automatic hot press, an automatic temperature control device and a cone hot-pressing mold to obtain a hot-pressed cone;
and carrying out post-treatment on the paper cone formed by hot pressing to obtain the composite paper cone.
2. The method for manufacturing a cone for improving the sound performance of a loudspeaker according to claim 1, wherein the step of beating unbleached sulfate pulp, straw and carbon fiber to obtain a first pulp comprises:
placing unbleached sulfate slurry, straws and carbon fibers into a water tank for soaking;
taking out the soaked unbleached sulfate pulp, the straws and the carbon fibers, and decomposing the soaked unbleached sulfate pulp, the straws and the carbon fibers by adopting a beater to obtain initial pulp;
the initial slurry is placed in a refiner for processing to obtain a first slurry.
3. A method of making a cone for improving the acoustic performance of a loudspeaker as claimed in claim 2, wherein the soaking time is at least 1 hour and not more than 10 hours, the soaking temperature is at least 22 ℃ and not more than 28 ℃, and the rotation speed of the beater is at least 80 rpm and not more than 150 rpm.
4. The method for manufacturing a cone of paper for improving the sound performance of a loudspeaker according to claim 1, wherein the step of forming the second paste into a cone blank comprises:
putting the second slurry into an automatic or semi-automatic hot press for hot pressing treatment;
sending the second slurry subjected to the hot pressing treatment into a scooping machine by using a vacuum pump for scooping;
and placing the fished second slurry in a raw material groove to obtain a paper basin blank.
5. The method for manufacturing a cone of paper for improving the sound performance of a loudspeaker according to claim 1, wherein the step of post-processing the cone formed by hot pressing to obtain the composite cone comprises the following steps:
cutting off the outer edge of the hot-press formed paper cone by adopting a punching die of a punching machine, and cutting a middle hole in the hot-press formed paper cone to obtain a paper cone with a whole edge;
and sequentially carrying out spraying and paper cone punching on the paper cone with the whole edge to obtain the composite paper cone.
6. The method for manufacturing a cone paper for improving the sound performance of a loudspeaker according to claim 5, wherein the step of sequentially spraying and punching the cone paper on the whole edge to obtain the composite cone paper comprises the following steps:
drying the paper cone with the whole edge by adopting an infrared ray or electric heating dryer;
spraying the dried paper basin with a spraying agent, an impregnating agent or a diluting material;
and cutting and bonding the paper cone subjected to spraying treatment by adopting a cutting device to obtain the conical composite paper cone.
7. The method for manufacturing a cone paper for improving the sound performance of a loudspeaker according to any one of claims 1 to 6, wherein after the step of post-processing the hot-pressed cone paper to obtain the composite cone paper, the method further comprises:
and (4) perspective and weighing the composite cones one by one to obtain the target composite cones meeting the quality requirement.
8. The method for manufacturing a cone paper for improving the sound performance of a loudspeaker according to claim 7, wherein the devices used for perspective and weighing comprise a light perspective device, a balance, an automatic scale, a resonant frequency Fo testing device and an inner diameter gauge, and the resonant frequency Fo testing device comprises an oscillator, an amplifier, a loudspeaker, a partition plate and a display device.
9. A cone for improving the sound performance of a loudspeaker, the cone being made from unbleached kraft pulp, straw and carbon fibre.
10. The paper basin of claim 9 wherein the unbleached kraft pulp, straw and carbon fiber are formulated in a ratio of 70% unbleached kraft pulp, 15% straw and 15% carbon fiber.
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| PCT/CN2019/128052 WO2021128024A1 (en) | 2019-12-24 | 2019-12-24 | Manufacturing method for paper cone for improving speaker acoustic performance and paper cone |
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Application publication date: 20200612 |