CN115260919A - Microphone diaphragm mass block bonding process - Google Patents
Microphone diaphragm mass block bonding process Download PDFInfo
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- CN115260919A CN115260919A CN202211177621.8A CN202211177621A CN115260919A CN 115260919 A CN115260919 A CN 115260919A CN 202211177621 A CN202211177621 A CN 202211177621A CN 115260919 A CN115260919 A CN 115260919A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- General Health & Medical Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a microphone diaphragm mass block bonding process, which comprises the following raw materials: the method comprises the following steps of preparing an adhesive in a first step, testing the performance of the adhesive in a second step, pretreating in a third step, positioning and protecting in a fourth step, hot-press forming in a fifth step and inspecting a finished product in a sixth step, so that the bonding strength of bonding between a vibrating diaphragm mass block and a microphone vibrating diaphragm voice coil is enhanced, the aim of difficult degumming is achieved, the fixing and stabilizing effect between the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil is ensured, the traditional welding and fixing mode is replaced, and the energy-saving and environment-friendly functions are achieved.
Description
Technical Field
The invention relates to the technical field of microphone diaphragm mass block bonding processes, in particular to a microphone diaphragm mass block bonding process.
Background
A microphone (also called a microphone or a microphone, formal name of chinese is a microphone) is a transducer that converts sound into an electrical signal, and the sound quality of the microphone mainly depends on a vibrating diaphragm mass block, and the fixation of the vibrating diaphragm mass block and a voice coil of a microphone diaphragm is also important.
At present, the fixed mode of vibrating diaphragm quality piece and microphone vibrating diaphragm voice coil loudspeaker voice coil on the market, adopt the welding mode mostly, when adopting the welding mode to fixed with the microphone vibrating diaphragm voice coil loudspeaker voice coil to vibrating diaphragm quality piece, not only it is higher to staff's technical merit requirement, and a large amount of exhaust fumes and harmful gas still easily appear, do not possess energy-concerving and environment-protective function, also it more to require the welding condition of vibrating diaphragm quality piece and microphone vibrating diaphragm voice coil loudspeaker voice coil, and easily cause the high temperature injury to other subassemblies in the microphone among the welding process, can't utilize the adhesive that has viscosity height, not bubble, be difficult for droing, glued membrane cohesion is strong, the transparency height just does not come unstuck the function and bonds fixed vibrating diaphragm quality piece and microphone vibrating diaphragm voice coil loudspeaker voice coil, for this reason, microphone vibrating diaphragm quality piece bonding process is proposed.
Disclosure of Invention
The invention aims to provide a bonding process for a mass block of a microphone vibrating diaphragm, which aims to solve the problem that the vibrating diaphragm mass block and a voice coil of the microphone vibrating diaphragm cannot be bonded and fixed by using an adhesive with the functions of high viscosity, no bubbling, difficult falling, strong cohesive force of an adhesive film, high transparency and no adhesive falling in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the microphone diaphragm mass block bonding process comprises the following raw materials:
a main glue agent, an auxiliary glue agent and an auxiliary agent;
the main glue agent is composed of butyl acrylate, acrylic acid and vinyl acetate, the auxiliary glue agent is an MAH material, and the auxiliary agent is composed of a solvent, an initiator, a tackifier and a fluorescent agent;
the mass components of the main colloid agent, the auxiliary colloid agent and the auxiliary agent are 30-40% of the main colloid agent, 0.04-0.3% of the auxiliary colloid agent and 45-55% of the auxiliary agent;
and the bonding process comprises the following steps:
step one, adhesive preparation: respectively injecting a main adhesive consisting of butyl acrylate, acrylic acid and vinyl acetate and an auxiliary adhesive of an MAH material into a high-speed mixer for uniform mixing, injecting an auxiliary agent when the main adhesive and the auxiliary adhesive are mixed to a half stroke, then efficiently and uniformly mixing the main adhesive, the auxiliary adhesive and the auxiliary agent by the high-speed mixer to obtain an adhesive, filling the adhesive into a container, and waiting for standby application;
step two, testing the performance of the adhesive: and (3) taking 6 test samples out of the adhesive prepared in the container in the first step by 6 times by a worker, testing the adhesive property and the adhesive aging property of the 6 test samples, and measuring the gel content of the adhesive to obtain the adhesive property, the adhesive aging property and the gel content data of the adhesive, wherein the adhesive property, the adhesive aging property and the gel content of the adhesive in the 6 test samples are all qualified and meet excellent standards.
Step three, pretreatment: the method comprises the following steps that a worker firstly cleans the bonding position of a microphone diaphragm and a voice coil by using acetone, then carries out secondary ultrasonic cleaning on the bonding position of the microphone diaphragm and the voice coil after primary cleaning by using an ultrasonic cleaning machine, and then cleans the bonding position of a diaphragm mass block by using a cleaning agent, so that the cleaning preparation work of rust, dust and oil stains on the bonding position of the microphone diaphragm and the voice coil and the bonding position of the diaphragm mass block can be completed;
step four, positioning protection: secondly, placing the microphone diaphragm voice coil processed in the third step on a clamp bracket of a glue extruder by a worker, wherein an illuminating lamp on the clamp bracket of the glue extruder is always towards the bonding position of the microphone diaphragm voice coil, injecting qualified adhesive in the preparation container in the first step into the glue extruder after the clamp bracket of the glue extruder positions the microphone diaphragm voice coil, uniformly coating the adhesive on the bonding position of the microphone diaphragm voice coil by a glue extruder by the glue extruder, aligning and bonding the bonding position of the diaphragm mass block and the bonding position of the microphone diaphragm voice coil by the worker, wrapping a protective adhesive tape at the bonding position of the diaphragm mass block and the bonding position of the microphone diaphragm voice coil, and performing positioning and shaping on the diaphragm mass block and the microphone diaphragm voice coil, so as to perform primary bonding on the diaphragm mass block and the microphone diaphragm voice coil;
step five, hot-press forming: then, the worker places the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the preliminary bonding in the fourth step into a hot press machine for hot press molding, the hot press temperature in the hot press machine is controlled to be 130-160 ℃, the hot press time is 20-40min, and after the hot press preset time, the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the bonding are taken out;
step six, finished product inspection: the staff adopts the visual measurement mode earlier to carry out comprehensive observation to the bonding position of vibrating diaphragm quality piece and microphone diaphragm voice coil loudspeaker voice coil, wear protective gloves again and carry out the hand and feel to the bonding position of vibrating diaphragm quality piece and microphone diaphragm voice coil loudspeaker voice coil, then detect the bonding strength of bonding layer on vibrating diaphragm quality piece and the microphone diaphragm voice coil loudspeaker voice coil through the universal tensile testing machine of electron, it carries out fluorescence detection to use special fluorescent lamp to observe the bonding agent of vibrating diaphragm quality piece and microphone diaphragm voice coil loudspeaker voice coil again, whether there is the broken edge to look over, fault phenomenon, treat that whole detect qualified back, can roll off the production line and carry out subsequent processing.
Preferably, the solvent is one of aliphatic hydrocarbon, ester, alcohol, ketone, chlorohydrocarbon, ether, sulfone and amide solvents, the tackifier is tackifying resin, the initiator is dicumyl peroxide, and the radioactive element in the fluorescent agent is one of 14C, 35Sr, 90Sr, na and Th.
Preferably, in the step one adhesive preparation process, the mass ratio of the main adhesive composed of butyl acrylate, acrylic acid and vinyl acetate to the auxiliary adhesive of the MAH material is 90:1, controlling the adding content of an initiator in the auxiliary agent to be between 0.5 and 0.8 percent, regulating and controlling the stirring rotating speed range of the high-speed mixer to be between 220 and 280r/min, heating the main colloid agent, the auxiliary colloid agent and the auxiliary agent in the high-speed mixer in a uniformly mixed state by using a heater, and controlling the heating condition to be between 200 and 240 ℃.
Preferably, in the step two adhesive performance test, when the adhesive performance test is performed: respectively pressing 6 parts of test samples into a film with the thickness of 0.5mm by using a flat vulcanizing machine, then carrying out hot-pressing adhesion on the film to prepare a composite film, cutting the composite film into stripping test sample strips with the length of 150mm and the width of 20mm, then fixing the prepared sample strips on a stripping fixture, carrying out T stripping test, wherein the stripping speed is 50mm/min, the stripping length is 50mm, and the obtained adhesive property data is 43.8N/25mm and is in an excellent range.
Preferably, in the step two adhesive performance test process, when the adhesive aging performance test is performed: the prepared stripping test sample strip with the length of 150mm and the width of 20mm is placed in No. 92 gasoline and placed in an environment of 25+2 ℃, the sample strip is taken out after 7 days, after redundant fuel oil on the surface is wiped off, a T stripping test is carried out, and the adhesion performance data obtained after aging is still 36.4N/25mm and is in an excellent range.
Preferably, during the step two adhesive performance test, when the gel content is measured in 6 test specimens: the flow rate of the adhesive in 6 test samples is measured by a worker through a flow rate tester, the flow rate is dried in advance to 6 groups of weighing bottles with constant mass, then 6 test samples are weighed by an analytical balance and are accurate to 0.001g, then the 6 groups of weighing bottles filled with 6 test samples are uniformly placed in a vacuum oven with constant temperature, the vacuum oven is dried for 1-2h at the temperature of 120-130 ℃, then the 6 groups of weighing bottles are taken out and placed in a dryer, the cooling is carried out for 20min, then the 6 groups of weighing bottles are weighed by the analytical balance, and the average value of gel data obtained 6 times is taken, so that accurate gel content data can be obtained, the gel content is 0.1%, and the calculation formula is as follows: w = m-m 1 /m 2 -m 1 *100%, and wherein: m is the mass of the weighing bottle and the dried test sample, m 1 To weigh the mass of the bottle, m 2 The mass of the sample was measured before weighing the vial and drying.
Preferably, in the third pretreatment process, before cleaning the bonding position of the microphone diaphragm voice coil and the bonding position of the diaphragm mass block, a worker wears protective gloves and uses a polishing tool to perform rough polishing treatment on the bonding position of the microphone diaphragm voice coil and the bonding position of the diaphragm mass block, so that the roughness of the bonding position of the microphone diaphragm voice coil and the bonding position of the diaphragm mass block reaches 10-20 μm.
Preferably, in the fourth positioning protection process, the glue squeezing machine uniformly paints the adhesive to the bonding position of the voice coil of the microphone diaphragm through the glue squeezing head, the temperature of the adhesive in the glue conveying pipeline of the glue squeezing machine is always kept at 50-60 ℃, and dust-proof clothes and dust-proof gloves are worn in the whole process of the operation of a worker.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a main adhesive agent consisting of butyl acrylate, acrylic acid and vinyl acetate, an auxiliary adhesive agent of an MAH material and an auxiliary agent consisting of a solvent, an initiator, a tackifier and a fluorescent agent are used as raw materials of the adhesive, and the nontoxic and harmless main adhesive agent, auxiliary adhesive agent and auxiliary agent are reasonably matched to ensure that the adhesive has the functions of high viscosity, no foaming, strong cohesive force and high transparency of an adhesive film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the contents in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides the technical scheme that: the microphone diaphragm mass block bonding process comprises the following raw materials:
a main glue agent, an auxiliary glue agent and an auxiliary agent;
the main glue agent is composed of butyl acrylate, acrylic acid and vinyl acetate, the auxiliary glue agent is an MAH material, and the auxiliary agent is composed of a solvent, an initiator, a tackifier and a fluorescent agent;
the adhesive comprises 30-40% of main adhesive, 0.04-0.3% of auxiliary adhesive and 45-55% of auxiliary agent, wherein the main adhesive composed of butyl acrylate, acrylic acid and vinyl acetate, the auxiliary adhesive of MAH material and the auxiliary agent composed of solvent, initiator, tackifier and fluorescent agent are used as raw materials of the adhesive, and the nontoxic and harmless main adhesive, auxiliary adhesive and auxiliary agent are reasonably matched, so that the adhesive has the functions of high viscosity, no foaming, strong cohesive force and high transparency of an adhesive film;
and the bonding process comprises the following steps:
step one, adhesive preparation: firstly, respectively injecting a main adhesive consisting of butyl acrylate, acrylic acid and vinyl acetate and an auxiliary adhesive of an MAH material into a high-speed mixer for uniform mixing, injecting an auxiliary agent when the main adhesive and the auxiliary adhesive are mixed to a half stroke, then efficiently and uniformly mixing the main adhesive, the auxiliary adhesive and the auxiliary agent by the high-speed mixer to obtain an adhesive, filling the adhesive into a container, and waiting for standby;
step two, testing the performance of the adhesive: and (3) taking 6 test samples out of the adhesive prepared in the container in the first step by 6 times by a worker, testing the adhesive property and the adhesive aging property of the 6 test samples, and measuring the gel content of the adhesive to obtain the adhesive property, the adhesive aging property and the gel content data of the adhesive, so that the adhesive property, the adhesive aging property and the gel content of the adhesive in the 6 test samples are all qualified and reach excellent standards.
Step three, pretreatment: the method comprises the following steps that a worker firstly cleans the bonding position of a microphone diaphragm and a voice coil by using acetone, then carries out secondary ultrasonic cleaning on the bonding position of the microphone diaphragm and the voice coil after primary cleaning by using an ultrasonic cleaning machine, and then cleans the bonding position of a diaphragm mass block by using a cleaning agent, so that the cleaning preparation work of rust, dust and oil stains on the bonding position of the microphone diaphragm and the voice coil and the bonding position of the diaphragm mass block can be completed;
step four, positioning protection: secondly, placing the microphone diaphragm voice coil processed in the third step on a clamp bracket of a glue extruder by a worker, wherein an illuminating lamp on the clamp bracket of the glue extruder is always towards the bonding position of the microphone diaphragm voice coil, injecting qualified adhesive in the preparation container in the first step into the glue extruder after the clamp bracket of the glue extruder positions the microphone diaphragm voice coil, uniformly coating the adhesive on the bonding position of the microphone diaphragm voice coil by a glue extruder by the glue extruder, aligning and bonding the bonding position of the diaphragm mass block and the bonding position of the microphone diaphragm voice coil by the worker, wrapping a protective adhesive tape at the bonding position of the diaphragm mass block and the bonding position of the microphone diaphragm voice coil, and performing positioning and shaping on the diaphragm mass block and the microphone diaphragm voice coil, so as to perform primary bonding on the diaphragm mass block and the microphone diaphragm voice coil;
step five, hot-press forming: then, the worker places the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the preliminary bonding in the fourth step into a hot press machine for hot press molding, the hot press temperature in the hot press machine is controlled to be 130-160 ℃, the hot press time is 20-40min, and after the hot press preset time, the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the bonding are taken out;
step six, finished product inspection: a worker firstly adopts a visual inspection mode to comprehensively observe the bonding position of a vibrating diaphragm mass block and a microphone vibrating diaphragm voice coil, wears protective gloves to perform hand touch feeling on the bonding position of the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil, then detects the bonding strength of an adhesive layer on the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil through an electronic universal tensile testing machine, then uses a special fluorescent lamp to observe the adhesive of the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil to perform fluorescence detection, checks whether edge breakage and fault phenomena exist, can be off-line for subsequent processing after all detection is qualified, and then adopts the steps of preparing the adhesive, testing the performance of the adhesive in the step two, pretreating in the step three, positioning and protecting in the step four, matching the process steps of hot press molding in the step five and inspecting the finished product in the step six, so that the bonding strength of the bonding between the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil is enhanced, the aim of difficult degumming is achieved, the fixed and stable effect between the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil is ensured, the traditional smoke welding and fixing mode is replaced, no harmful is generated, and the environment-friendly function is achieved.
Example 2
The invention provides the technical scheme that: the microphone diaphragm mass block bonding process comprises the following raw materials:
a main glue agent, an auxiliary glue agent and an auxiliary agent;
the main glue agent is composed of butyl acrylate, acrylic acid and vinyl acetate, the auxiliary glue agent is an MAH material, the auxiliary glue agent is composed of a solvent, an initiator, a tackifier and a fluorescent agent, the solvent adopts one of aliphatic hydrocarbon, ester, alcohol, ketone, chlorohydrocarbon, ether, sulfone and amide solvents, the tackifier adopts tackifying resin, the initiator adopts dicumyl peroxide, and a radioactive element in the fluorescent agent adopts one of 14C, 35Sr, 90Sr, na and Th;
the adhesive comprises 30-40% of main adhesive, 0.04-0.3% of auxiliary adhesive and 45-55% of auxiliary agent, wherein the main adhesive consisting of butyl acrylate, acrylic acid and vinyl acetate, the auxiliary adhesive of MAH material and the auxiliary agent consisting of solvent, initiator, tackifier and fluorescent agent are used as raw materials of the adhesive, and the nontoxic and harmless main adhesive, auxiliary adhesive and auxiliary agent are reasonably matched, so that the adhesive has the functions of high viscosity, no foaming, strong cohesive force of an adhesive film and high transparency;
and the bonding process comprises the following steps:
step one, adhesive preparation: firstly, respectively injecting a main adhesive agent consisting of butyl acrylate, acrylic acid and vinyl acetate and an auxiliary adhesive agent of an MAH material into a high-speed mixer for uniformly mixing, wherein the mass ratio of the main adhesive agent consisting of butyl acrylate, acrylic acid and vinyl acetate to the auxiliary adhesive agent of the MAH material is 90:1, when the main adhesive and the auxiliary adhesive are mixed to a half stroke, injecting an auxiliary agent, controlling the adding content of an initiator in the auxiliary agent to be 0.5-0.8%, then efficiently and uniformly mixing the main adhesive, the auxiliary adhesive and the auxiliary agent by a high-speed mixer, controlling the stirring speed range of the high-speed mixer to be 220-280r/min, heating the main adhesive, the auxiliary adhesive and the auxiliary agent in the high-speed mixer in a uniformly mixed state by using a heater for reaction, controlling the heating condition to be 200-240 ℃, obtaining an adhesive, and filling the adhesive into a container for later use;
step two, testing the performance of the adhesive: the worker takes 6 test samples out of the adhesive prepared in the container in the first step 6 times before and after, then tests the adhesive property and the adhesive aging property of the 6 test samples and measures the adhesive gel content to obtain the adhesive property, the adhesive aging property and the gel content data of the adhesive, and when the adhesive property test is carried out: respectively pressing 6 parts of test samples into a film with the thickness of 0.5mm by using a flat vulcanizing machine, then carrying out hot-pressing adhesion on the film to prepare a composite film, cutting the composite film into stripping test sample strips with the length of 150mm and the width of 20mm, then fixing the prepared sample strips on a stripping fixture, carrying out T stripping test, wherein the stripping speed is 50mm/min, the stripping length is 50mm, the obtained adhesion performance data is 43.8N/25mm, the excellent range is shown, and when the adhesion aging performance test is carried out: placing the prepared stripping test sample strip with the length of 150mm and the width of 20mm in No. 92 gasoline, placing the sample strip in an environment with the temperature of 25+2 ℃, taking out the sample strip after 7 days, wiping off redundant fuel on the surface, performing T stripping test, obtaining the data of the bonding performance after aging, wherein the data is still 36.4N/25mm and is in an excellent range, and when the gel content in 6 test samples is measured: the method comprises the following steps that a worker measures the flow rate of an adhesive in 6 test samples by using a flow rate tester, the flow rate tester is prepared to be dried in advance to 6 groups of weighing bottles with constant mass, then 6 test samples are weighed by an analytical balance and are accurate to 0.001g, then the 6 groups of weighing bottles with the 6 test samples are uniformly placed in a vacuum oven with constant temperature, the vacuum oven is dried for 1-2h at the temperature of 120-130 ℃, then the 6 groups of weighing bottles are taken out and placed in a dryer, the cooling is carried out for 20min, then the 6 groups of weighing bottles are weighed by the analytical balance, and the average value of gel data obtained 6 times is taken, so that accurate gel content data can be obtained, the gel content is 0.1%, and the calculation formula is as follows: w = m-m 1 /m 2 -m 1 *100%, and wherein: m is a weighing bottle and test after dryingMass of sample, m 1 To weigh the mass of the bottle, m 2 The adhesive property, the adhesive aging property and the gel content of the adhesive in 6 test samples are all qualified and meet excellent standards by weighing the mass of the test sample before drying and the mass of the test sample before drying.
Step three, pretreatment: before cleaning the bonding position of the microphone diaphragm and voice coil and the bonding position of the vibrating diaphragm mass block, a worker wears protective gloves and uses a polishing cutter to perform rough polishing treatment on the bonding position of the microphone diaphragm and voice coil and the bonding position of the vibrating diaphragm mass block to ensure that the roughness of the bonding position of the microphone diaphragm and voice coil and the bonding position of the vibrating diaphragm mass block reaches 10-20 mu m, then the worker firstly cleans the bonding position of the microphone diaphragm and voice coil by using acetone, then carries out secondary ultrasonic cleaning on the bonding position of the microphone diaphragm and voice coil after primary cleaning by using an ultrasonic cleaning machine, and then cleans the bonding position of the vibrating diaphragm mass block by using a cleaning agent, so that the cleaning preparation work of rust, dust and oil stains on the bonding position of the microphone diaphragm and voice coil and the bonding position of the vibrating diaphragm mass block can be completed;
step four, positioning protection: secondly, a worker places the microphone diaphragm voice coil subjected to the processing in the third step on a clamp bracket of a glue extruder, an illuminating lamp on the clamp bracket of the glue extruder always illuminates towards the bonding position of the microphone diaphragm voice coil, after the clamp bracket of the glue extruder positions the microphone diaphragm voice coil, qualified adhesive in the preparation container in the first step is injected into the glue extruder, the glue extruder uniformly coats the adhesive to the bonding position of the microphone diaphragm voice coil through an extruding head, the glue extruder uniformly coats the adhesive to the bonding position of the microphone diaphragm voice coil through the extruding head, the temperature of the adhesive in a glue conveying pipeline of the glue extruder is always kept at 50-60 ℃, then the worker aligns and bonds the bonding position of a vibrating diaphragm mass block with the bonding position of the microphone diaphragm voice coil, wraps the vibrating diaphragm mass block and the microphone diaphragm voice coil at the bonding position of the vibrating diaphragm mass block and the bonding position of the microphone diaphragm voice coil, and is used for positioning and shaping the vibrating diaphragm voice coil, and the worker needs to wear dustproof clothes and dust gloves in the whole operation process, and then can bond the vibrating diaphragm and the microphone diaphragm voice coil with the microphone diaphragm voice coil;
step five, hot-press forming: then, the worker places the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the preliminary bonding in the fourth step into a hot press machine for hot press molding, the hot press temperature in the hot press machine is controlled to be 130-160 ℃, the hot press time is 20-40min, and after the hot press preset time, the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the bonding are taken out;
step six, finished product inspection: the method comprises the steps of firstly, a worker comprehensively observes the bonding position of a vibrating diaphragm mass block and a microphone vibrating diaphragm voice coil by adopting a visual inspection mode, then wears protective gloves to sense the bonding position of the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil by hands, then detects the bonding strength of an adhesive layer on the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil by an electronic universal tensile testing machine, then observes the adhesive of the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil by using a special fluorescent lamp to perform fluorescence detection, checks whether edge breakage and fault phenomena exist or not, and can carry out subsequent processing after all detection is qualified.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The microphone diaphragm mass block bonding process is characterized in that: the method comprises the following raw materials:
a main glue agent, an auxiliary glue agent and an auxiliary agent;
the main glue agent consists of butyl acrylate, acrylic acid and vinyl acetate, the auxiliary glue agent is an MAH material, and the auxiliary agent consists of a solvent, an initiator, a tackifier and a fluorescent agent;
the mass components of the main colloid agent, the auxiliary colloid agent and the auxiliary agent are 30-40% of the main colloid agent, 0.04-0.3% of the auxiliary colloid agent and 45-55% of the auxiliary agent;
and the bonding process comprises the following steps:
step one, preparing an adhesive: firstly, respectively injecting a main adhesive consisting of butyl acrylate, acrylic acid and vinyl acetate and an auxiliary adhesive of an MAH material into a high-speed mixer for uniform mixing, injecting an auxiliary agent when the main adhesive and the auxiliary adhesive are mixed to a half stroke, then efficiently and uniformly mixing the main adhesive, the auxiliary adhesive and the auxiliary agent by the high-speed mixer to obtain an adhesive, filling the adhesive into a container, and waiting for standby;
step two, testing the performance of the adhesive: the worker takes 6 test samples out of the adhesive prepared in the container in the first step 6 times, then tests the adhesive property and the adhesive aging property of the 6 test samples and measures the gel content of the adhesive to obtain the adhesive property, the adhesive aging property and the gel content data of the adhesive, and the adhesive property, the adhesive aging property and the gel content of the adhesive in the 6 test samples are all qualified and reach excellent standards;
step three, pretreatment: the method comprises the following steps that a worker firstly cleans the bonding position of a microphone diaphragm and a voice coil by using acetone, then carries out secondary ultrasonic cleaning on the bonding position of the microphone diaphragm and the voice coil after primary cleaning by using an ultrasonic cleaning machine, and then cleans the bonding position of a diaphragm mass block by using a cleaning agent, so that the cleaning preparation work of rust, dust and oil stains on the bonding position of the microphone diaphragm and the voice coil and the bonding position of the diaphragm mass block can be completed;
step four, positioning protection: secondly, placing the microphone diaphragm voice coil processed in the third step on a clamp bracket of a glue extruder by a worker, wherein an illuminating lamp on the clamp bracket of the glue extruder is always towards the bonding position of the microphone diaphragm voice coil, injecting qualified adhesive in the preparation container in the first step into the glue extruder after the clamp bracket of the glue extruder positions the microphone diaphragm voice coil, uniformly coating the adhesive on the bonding position of the microphone diaphragm voice coil by a glue extruder by the glue extruder, aligning and bonding the bonding position of the diaphragm mass block and the bonding position of the microphone diaphragm voice coil by the worker, wrapping a protective adhesive tape at the bonding position of the diaphragm mass block and the bonding position of the microphone diaphragm voice coil, and performing positioning and shaping on the diaphragm mass block and the microphone diaphragm voice coil, so as to perform primary bonding on the diaphragm mass block and the microphone diaphragm voice coil;
step five, hot-press forming: then, the worker places the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the preliminary bonding in the fourth step into a hot press machine for hot press molding, the hot press temperature in the hot press machine is controlled to be 130-160 ℃, the hot press time is 20-40min, and after the hot press preset time, the vibrating diaphragm mass block and the microphone vibrating diaphragm voice coil after the bonding are taken out;
step six, finished product inspection: the staff adopts the visual measurement mode earlier to carry out comprehensive observation to the bonding position of vibrating diaphragm quality piece and microphone diaphragm voice coil loudspeaker voice coil, wear protective gloves again and carry out the hand and feel to the bonding position of vibrating diaphragm quality piece and microphone diaphragm voice coil loudspeaker voice coil, then detect the bonding strength of bonding layer on vibrating diaphragm quality piece and the microphone diaphragm voice coil loudspeaker voice coil through the universal tensile testing machine of electron, it carries out fluorescence detection to use special fluorescent lamp to observe the bonding agent of vibrating diaphragm quality piece and microphone diaphragm voice coil loudspeaker voice coil again, whether there is the broken edge to look over, fault phenomenon, treat that whole detect qualified back, can roll off the production line and carry out subsequent processing.
2. The bonding process of the mass block of the microphone diaphragm according to claim 1, wherein: the solvent is one of aliphatic hydrocarbon, ester, alcohol, ketone, chlorohydrocarbon, ether, sulfone and amide solvents, the tackifier is tackifying resin, the initiator is dicumyl peroxide, and the radioactive element in the fluorescent agent is one of 14C, 35Sr, 90Sr, na and Th.
3. The mass bonding process of the microphone diaphragm of claim 1, wherein: in the first step of adhesive preparation, the mass ratio of the main adhesive composed of butyl acrylate, acrylic acid and vinyl acetate to the auxiliary adhesive of the MAH material is 90:1, controlling the adding content of an initiator in the auxiliary agent to be between 0.5 and 0.8 percent, regulating and controlling the stirring rotating speed range of the high-speed mixer to be between 220 and 280r/min, heating the main colloid agent, the auxiliary colloid agent and the auxiliary agent in the high-speed mixer in a uniformly mixed state by using a heater, and controlling the heating condition to be between 200 and 240 ℃.
4. The mass bonding process of the microphone diaphragm of claim 1, wherein: in the adhesive performance test process of the second step, when the adhesive performance test is carried out: respectively pressing 6 parts of test samples into a film with the thickness of 0.5mm by using a flat vulcanizing instrument, then carrying out hot-pressing adhesion on the film to prepare a composite film, cutting the composite film into stripping test sample strips with the length of 150mm and the width of 20mm, then fixing the prepared sample strips on a stripping fixture, carrying out T stripping test, wherein the stripping speed is 50mm/min, the stripping length is 50mm, and the obtained adhesive property data is 43.8N/25mm and is in an excellent range.
5. The mass bonding process of claim 4, wherein: in the step two adhesive performance test process, when the adhesive aging performance test is carried out: placing the prepared stripping test sample strip with the length of 150mm and the width of 20mm in No. 92 gasoline, placing the sample strip in an environment with the temperature of 25+2 ℃, taking out the sample strip after 7 days, wiping off redundant fuel on the surface, performing T stripping test, and aging to obtain the adhesive property data which is still 36.4N/25mm and is in an excellent range.
6. The mass bonding process of the microphone diaphragm of claim 1, wherein: in the step two adhesive performance test, when the gel content in 6 test samples is measured: the flow rate of the adhesive in 6 test specimens was measured by a worker using a flow rate tester, and prepared to be dried in advance to 6 sets of weighing bottles having a constant mass, followed by use of a measuring tubeRespectively weighing 6 parts of test sample by an analytical balance to be accurate to 0.001g, uniformly putting 6 groups of weighing bottles filled with 6 parts of test sample into a vacuum oven with constant temperature, drying the vacuum oven for 1-2h at 120-130 ℃, taking out 6 groups of weighing bottles, putting the weighing bottles into a dryer, cooling for 20min, respectively weighing 6 groups of weighing bottles by the analytical balance, and taking the average value of gel data obtained 6 times to obtain accurate gel content data, wherein the gel content is 0.1%, and the calculation formula is as follows: w = m-m 1 /m 2 -m 1 *100%, and wherein: m is the mass of the weighing bottle and the dried test sample, m 1 To weigh the mass of the bottle, m 2 The mass of the sample was measured before weighing the vial and drying.
7. The mass bonding process of the microphone diaphragm of claim 1, wherein: in the third pretreatment process, before cleaning the bonding positions of the microphone diaphragm and voice coil and the bonding positions of the diaphragm mass block, a worker firstly wears protective gloves and uses a polishing cutter to perform rough polishing treatment on the bonding positions of the microphone diaphragm and voice coil and the bonding positions of the diaphragm mass block, so that the roughness of the bonding positions of the microphone diaphragm and voice coil and the bonding positions of the diaphragm mass block reaches 10-20 microns.
8. The bonding process of the mass block of the microphone diaphragm according to claim 1, wherein: in the fourth positioning protection process, the glue extruding machine uniformly coats the adhesive to the bonding position of the voice coil of the microphone diaphragm through the glue extruding head, the temperature of the adhesive in the glue conveying pipeline of the glue extruding machine is always kept at 50-60 ℃, and dust-proof clothes and dust-proof gloves are worn by workers in the whole operation process.
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| CN101207944A (en) * | 2006-12-18 | 2008-06-25 | 深圳市豪恩电声科技有限公司 | Method for manufacturing microphone diaphragm |
| WO2015132852A1 (en) * | 2014-03-03 | 2015-09-11 | 古河電気工業株式会社 | Adhesive tape for semiconductor processing |
| WO2015186803A1 (en) * | 2014-06-05 | 2015-12-10 | 電気化学工業株式会社 | Adhesive agent composition, and temporary member-fixation method using same |
| CN110028925A (en) * | 2018-12-17 | 2019-07-19 | 瑞声科技(新加坡)有限公司 | Adhesive and microphone device |
| CN110198511A (en) * | 2018-02-26 | 2019-09-03 | 通用汽车环球科技运作有限责任公司 | System and method for reducing loudspeaker vibration |
| CN112839295A (en) * | 2021-03-08 | 2021-05-25 | 昆山泽利斯机电科技有限公司 | Adhesive film bonding process for metal ring and vibrating diaphragm in acoustic device production |
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2022
- 2022-09-27 CN CN202211177621.8A patent/CN115260919A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207944A (en) * | 2006-12-18 | 2008-06-25 | 深圳市豪恩电声科技有限公司 | Method for manufacturing microphone diaphragm |
| WO2015132852A1 (en) * | 2014-03-03 | 2015-09-11 | 古河電気工業株式会社 | Adhesive tape for semiconductor processing |
| WO2015186803A1 (en) * | 2014-06-05 | 2015-12-10 | 電気化学工業株式会社 | Adhesive agent composition, and temporary member-fixation method using same |
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| CN112839295A (en) * | 2021-03-08 | 2021-05-25 | 昆山泽利斯机电科技有限公司 | Adhesive film bonding process for metal ring and vibrating diaphragm in acoustic device production |
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