CN118018936A - Processing technology of soft ear mold of customized hearing aid - Google Patents
Processing technology of soft ear mold of customized hearing aid Download PDFInfo
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- CN118018936A CN118018936A CN202410198955.6A CN202410198955A CN118018936A CN 118018936 A CN118018936 A CN 118018936A CN 202410198955 A CN202410198955 A CN 202410198955A CN 118018936 A CN118018936 A CN 118018936A
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- 238000012545 processing Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 37
- 238000004140 cleaning Methods 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 238000005282 brightening Methods 0.000 claims abstract description 12
- 238000005498 polishing Methods 0.000 claims abstract description 12
- 238000003848 UV Light-Curing Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000001723 curing Methods 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims abstract description 8
- 239000012778 molding material Substances 0.000 claims abstract description 7
- 238000003379 elimination reaction Methods 0.000 claims abstract description 6
- 238000004381 surface treatment Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000008030 elimination Effects 0.000 claims abstract description 4
- 238000007639 printing Methods 0.000 claims description 23
- 230000009471 action Effects 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 8
- 239000004922 lacquer Substances 0.000 claims description 8
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 8
- 238000010330 laser marking Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 210000005069 ears Anatomy 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007517 polishing process Methods 0.000 claims description 2
- 238000010146 3D printing Methods 0.000 abstract description 6
- 239000003973 paint Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 7
- 238000002791 soaking Methods 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 210000000613 ear canal Anatomy 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 208000032041 Hearing impaired Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Abstract
The invention discloses a processing technology of a soft ear mold of a customized hearing aid, which comprises the following steps: s100, scanning imaging: scanning and imaging the ear impression to form a first 3D model file; s200, designing a shell: performing redundancy elimination processing on the first 3D model file to obtain a second 3D model file, and generating a 3D shell model corresponding to the target ear model; s300, forming a shell; 3D printing to generate a shell blank; s400, cleaning and curing: cleaning and drying the shell blank, and then performing UV curing to obtain a shell mold; s500, ear mold forming: injecting molding materials into the shell mold, then pressurizing by using a pressurizing device, and removing the mold after cooling molding to obtain an ear mold primary blank; s600, surface treatment: polishing and brightening the primary blank of the ear mold to obtain an ear mold main body; s700, forming the cannula. The whole process flow of the invention is simpler and more convenient, the controllability is higher, the processing time is shorter, and the precision and quality of the finally obtained ear mold finished product are higher.
Description
Technical Field
The invention relates to the technical field of hearing aids, in particular to a processing technology of a soft ear mold of a customized hearing aid.
Background
A hearing aid is a device that provides hearing assistance to a hearing impaired person, and existing hearing aids generally include: the ear-hanging type hearing aid comprises a microphone for receiving external sound, a loudspeaker for transmitting the sound to the ear, and an electronic control processing device, wherein the ear-hanging type hearing aid is connected with an ear mould through a sound guide tube, and the ear mould is used for being plugged into an external auditory canal to transmit the processed sound into the ear of a user.
Since the ear mold is a part inserted into the ear canal, whether it matches with the human ear is a key factor determining wearing comfort, however, there is a significant personal difference in the external auditory canal shape of different users, so it is difficult to adapt the ear mold of a certain shape to wearing requirements of different users. Meanwhile, with the development of material technology, the soft ear mold has the advantages of improving wearing comfort, reducing sound leakage and the like, so that the soft ear mold is widely applied compared with a hard ear mold.
The existing soft ear mold process is generally as follows: after the ear sample paste is injected into the auditory canal of a human to prepare an ear impression, a female die of the ear impression is prepared by adopting agar, molding materials such as silica gel and the like are injected into the female die, the cured soft ear die is taken out from the female die after pressurizing and curing, and finally the soft ear die is polished and subjected to surface treatment. However, when the female mold is manufactured, casting and other modes are needed for molding, the molding process is complex, and the molding precision is low, so that the matching degree of the finally molded soft ear mold and the human ear is low, and the rejection rate of the ear mold processing is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a customized hearing aid soft ear mold processing technology which has the advantages of improving the molding precision and the product quality.
The invention adopts the following technical scheme:
according to an embodiment of the present disclosure, there is provided a process for manufacturing a soft ear mold of a customized hearing aid, including:
s100, scanning imaging: scanning and imaging an ear impression prepared and molded according to human ears by scanning equipment, and forming a first 3D model file corresponding to the ear impression;
S200, designing a shell: performing redundancy elimination processing on the first 3D model file to obtain a second 3D model file consistent with the target ear model, and generating a 3D shell model corresponding to the target ear model according to the second 3D model file;
S300, forming a shell; inputting the 3D shell model into a 3D printer to execute printing action to print and generate a shell blank;
s400, cleaning and curing: cleaning and drying the shell blank, and then performing UV curing to obtain a shell mold;
S500, ear mold forming: injecting molding materials into the shell mold, then pressurizing by using a pressurizing device, and removing the mold after cooling molding to obtain an ear mold primary blank;
S600, surface treatment: polishing and brightening the primary blank of the ear mold to obtain an ear mold main body;
S700, cannula molding: and inserting the prefabricated sound guide tube into a sound guide hole reserved in the ear mold main body, and testing firmness after adhesive bonding to obtain an ear mold finished product.
According to the technical scheme, the shell blank is scanned and formed in a 3D printing mode, the forming process is simple and more intelligent, the forming speed is higher, the forming efficiency is greatly improved, the printing precision can be controlled on line in a 3D printing mode, the formed shell blank is higher in precision, the precision and the product quality of a final formed ear mold main body are further improved, impurity materials attached to the shell blank can be effectively removed through cleaning and drying steps, the finally obtained shell mold has enough strength after UV curing, the obtained ear mold blank can be tightly attached to the shell mold through a pressurizing device and is free of bubbles in the shell mold, the forming precision and the product quality of the ear mold blank are further improved, the surface of the ear mold main body after polishing treatment and brightening treatment is smoother and round, and a sound guide tube is inserted into an ear mold main body point adhesive, and a qualified ear mold finished product can be obtained after the firmness test is passed; the whole process flow of the invention is simpler and more convenient, the controllability is higher, the processing time is shorter, and the precision and quality of the finally obtained ear mold finished product are higher.
In some exemplary embodiments, the redundancy elimination process in step S200 is specifically: and dividing the first 3D model file according to preset ear mold process parameters to remove redundant parts and obtain a second 3D model file consistent with the target ear mold.
By implementing the above technical solution, since the base structure is carried by the bottom of the shaped ear mold, this portion is not functional in the ear mold and therefore needs to be removed in a redundancy-removing manner to reduce the waste of printing material.
In some exemplary embodiments, the 3D shell model generates a control program file for controlling the 3D printer to perform a printing action when it is input to the 3D printer; the 3D printer takes UV light curing transparent resin as a printing raw material to execute printing action, and a shell blank formed by printing is provided with a plurality of exhaust holes.
According to the technical scheme, the vent holes are reserved in the printing process and used for discharging air in the shell when the forming material is injected into the shell in the follow-up process, so that the formed ear mold blank cannot contain bubbles.
In some exemplary embodiments, the step S400 specifically includes:
Immersing the shell primary blank in an organic solvent, immersing and cleaning for 3-5min, and taking out and air-drying to obtain a first cleaning body;
Placing the first cleaning body in an ultrasonic cleaning machine for ultrasonic cleaning for 3-10min, and taking out and air-drying to obtain a second cleaning body;
and curing the second cleaning body under UV light for 50-120s to obtain the shell mold.
According to the technical scheme, the shell primary blank is placed in the organic solvent for soaking and cleaning, so that impurity materials attached to the shell primary blank are effectively removed, a small amount of residual impurities and the organic solvent are further removed through ultrasonic cleaning, and the cleanliness and the accuracy of the shell primary blank are guaranteed.
In some exemplary embodiments, in the step S500, the pressurizing device performs the pressurizing treatment for 10-20min under the conditions that the pressure is 3-5MPa and the temperature is 65-75 ℃.
In some exemplary embodiments, the brightening process in step S600 is specifically: immersing the polished ear mold blank into a container filled with the light lacquer so as to coat the light lacquer layer on the outer part of the ear mold blank, and absorbing and removing the redundant light lacquer on the surface of the ear mold blank in a suction machine under negative pressure.
According to the technical scheme, the bright paint layer is coated on the surface of the ear mold primary blank, and redundant bright paint which is not adhered to the surface of the ear mold primary blank is sucked through a suction machine in a negative pressure suction mode, so that the bright paint layer on the surface of the ear mold primary blank is more uniform, and meanwhile, air flow generated under the negative pressure can be used for facilitating the drying of the bright paint layer.
In some exemplary embodiments, laser marking of the indicia on the surface of the ear mold blank is also included after the polishing process and between the brightening processes.
According to the technical scheme, the needed indication mark can be marked on the surface of the primary blank of the ear mold in a laser marking mode.
In some exemplary embodiments, the gloss paint is an audiological silicone paint.
In summary, compared with the prior art, the invention has the following beneficial effects:
According to the embodiment of the invention, the shell blank is scanned and molded in a 3D printing mode, the molding process is simple and more intelligent, the molding speed is higher, the molding efficiency is greatly improved, the printing precision can be controlled on line in a 3D printing mode, so that the molded shell blank is higher in precision, the precision and the product quality of a finally molded ear mold main body are improved, impurity materials attached to the shell blank can be effectively removed through cleaning and drying steps, the finally obtained shell mold has enough strength after UV curing, the obtained ear mold blank can be tightly attached to the shell mold and is free of bubbles in the shell mold through a pressurizing device, the molding precision and the product quality of the ear mold blank are further improved, the finished product is smoother and round after polishing treatment and brightening treatment is carried out on the surface of the ear mold main body, and after the sound guide tube is inserted into the ear mold main body point for bonding, the qualified ear mold can be obtained after the firmness test quality is passed; the whole process flow of the invention is simpler and more convenient, the controllability is higher, the processing time is shorter, and the precision and quality of the finally obtained ear mold finished product are higher.
Drawings
FIG. 1 is a process flow diagram of an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention provides a process for manufacturing a soft ear mold of a customized hearing aid, comprising:
s100, scanning imaging: scanning and imaging an ear impression prepared and molded according to human ears by a scanning device, and forming a first 3D model file corresponding to the ear impression.
Specifically, when the ear impression is formed, the ear sample paste is lightly injected into the auditory canal of a person, the ear impression which has certain hardness and is matched with the auditory canal of the person can be obtained after the ear sample paste is solidified, when the ear impression is placed on the scanning equipment, the scanning head is positioned above the ear impression and is used for carrying out moving scanning in the plane according to the X-axis direction or the Y-axis direction, the whole ear impression is scanned and imaged, a first 3D model file can be formed according to scanning information after the scanning is completed, and the first 3D model file can be displayed in the existing graphic processing software in a 3D model mode.
S200, designing a shell: and performing redundancy elimination processing on the first 3D model file to obtain a second 3D model file consistent with the target ear model, and generating a 3D shell model corresponding to the target ear model according to the second 3D model file.
The redundancy elimination process specifically includes: the first 3D model file is segmented according to preset ear mold process parameters so as to remove redundant parts to obtain a second 3D model file consistent with a target ear mold, and in actual operation, the first 3D model file can be directly segmented through existing image processing software, the preset ear mold process parameters mainly comprise the length dimension of the ear mold, the 3D shell model can be molded through a molding command through the existing image processing software, and the molded ear mold bottom can carry a base structure, so that the parts do not play a role in the ear mold, and need to be removed in a redundancy removing mode so as to reduce the waste of printing materials.
S300, forming a shell; inputting the 3D shell model into a 3D printer to execute printing action to print and generate a shell blank.
Specifically, when the 3D shell model is input into the 3D printer, a control program file for controlling the 3D printer to execute printing actions is generated, and the control program file is usually stored in a control program group identifiable by the 3D printer; the 3D printer uses UV light curing transparent resin as printing raw material to execute printing action, such as 405nm curable transparent resin material, and the shell blank formed by printing is provided with a plurality of vent holes, the printing holes are synchronously generated in the process of generating control program files, and the vent holes are reserved in the printing process and are used for discharging air in the shell when the forming material is injected into the shell in the follow-up process, so that the formed ear mold blank can not contain bubbles.
S400, cleaning and curing: and cleaning and drying the shell blank, and then performing UV curing to obtain the shell mold.
The step S400 specifically includes:
S401, soaking and cleaning the shell blank in an organic solvent for 3-5min, taking out and air-drying to obtain a first cleaning body, wherein in the embodiment, the organic solvent is preferably 90% alcohol, the soaking and cleaning time is 5min, and in other embodiments, the organic solvent can also be diethyl ether, acetone and the like, and the air-drying process can be assisted by blowing through a fan, an air gun and the like.
S402, placing the first cleaning body in an ultrasonic cleaner for ultrasonic cleaning for 3-10min, taking out and air-drying to obtain a second cleaning body, wherein in the embodiment, the ultrasonic cleaning time is preferably 5min, and the air-drying process can be assisted by blowing through a fan, an air gun and the like.
S403, curing the second cleaning body under UV light for 50-120S to obtain a shell mold, wherein in the embodiment, the UV curing time is preferably 100S, the light source wavelength is 405nm, and the UV light power is 10mw/cm 2.
The shell primary blank is placed in an organic solvent for soaking and cleaning, so that impurity materials attached to the shell primary blank are effectively removed, and a small amount of residual impurities and the organic solvent are further removed through ultrasonic cleaning, so that the cleanliness and the accuracy of the shell primary blank are ensured.
S500, ear mold forming: and (3) injecting a molding material into the shell mold, then carrying out pressurization treatment by using a pressurizing device, and removing the mold after cooling molding to obtain an ear mold primary blank.
Specifically, the molding material may be a fast setting silica gel transparent material, and the molding material may be injected into the shell mold by a special injection device under a certain pressure to completely fill the shell mold and the injection cannot be continued under the certain pressure, and the pressurizing device may be, for example, a pressure cooker, where the pressurizing device is used for pressurizing at a pressure of 3-5MPa and a temperature of 65-75 ℃ for 10-20min, and in this embodiment, the pressurizing device is preferably used for pressurizing at a pressure of 3.5MPa and a temperature of 70 ℃ for 15min.
After the pressurization treatment is finished, the shell mold can be cut into two halves by using a special pair of cutting pliers during mold removal, and the ear mold primary blank can be taken out.
S600, surface treatment: and polishing and brightening the primary blank of the ear mold to obtain the main body of the ear mold.
The polishing treatment can be performed by a special polishing machine, the polishing treatment is performed to polish the earmould primary blank to be smooth and round, the earmould primary blank surface laser marking indication marks are further included after polishing treatment and between polishing treatment, the laser marking is performed through a common laser marking machine in the market, the required indication marks can be marked on the earmould primary blank surface in a laser marking mode, and the indication marks can be information such as merchant Logo and customized user name.
The brightening treatment specifically comprises the following steps: immersing the polished ear mold blank into a container filled with a bright paint to coat a bright paint layer on the outer part of the ear mold blank, and absorbing excessive bright paint on the surface of the ear mold blank in a suction machine under negative pressure, wherein the bright paint is preferably a silicone paint for audiology in the embodiment.
Through cladding bright paint layer at the earmould primary blank surface to adsorb the unnecessary bright paint of removing at earmould primary blank surface by negative pressure absorption mode through the material sucking machine, thereby make earmould primary blank surface's bright paint layer more even, the air current that produces simultaneously under the negative pressure can help bright paint layer drying.
S700, cannula molding: inserting the prefabricated sound guide tube into a sound guide hole reserved in the ear mold main body, and testing firmness after adhesive bonding to obtain an ear mold finished product; the sound guide hole is a through hole, and the sound guide pipe is usually inserted into a position which is level with the front end of the main body of the ear mold, so that the main body of the ear mold is not protruded.
The method has the advantages that the process is simple and more intelligent in the forming process, the forming speed is higher, the forming efficiency is greatly improved, the printing precision can be controlled on line in a 3D printing mode, the formed shell blank is higher in precision, the precision and the product quality of a final formed ear mold main body are further improved, impurity materials attached to the shell blank can be effectively removed through the cleaning and drying steps, the finally obtained shell mold has enough strength after UV curing, the obtained ear mold blank can be tightly attached to the shell mold through a pressurizing device and is free of bubbles in the shell mold, the forming precision and the product quality of the ear mold blank are further improved, the surface of the ear mold main body after polishing treatment and brightening treatment is smoother and round, and a qualified ear mold finished product can be obtained after the firmness test is passed; the whole process flow of the invention is simpler and more convenient, the controllability is higher, the processing time is shorter, and the precision and quality of the finally obtained ear mold finished product are higher.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present invention, which are equivalent to the above embodiments according to the essential technology of the present invention, and these are all included in the protection scope of the present invention.
Claims (8)
1. A process for custom-made hearing aid soft ear molding, comprising:
s100, scanning imaging: scanning and imaging an ear impression prepared and molded according to human ears by scanning equipment, and forming a first 3D model file corresponding to the ear impression;
S200, designing a shell: performing redundancy elimination processing on the first 3D model file to obtain a second 3D model file consistent with the target ear model, and generating a 3D shell model corresponding to the target ear model according to the second 3D model file;
S300, forming a shell; inputting the 3D shell model into a 3D printer to execute printing action to print and generate a shell blank;
s400, cleaning and curing: cleaning and drying the shell blank, and then performing UV curing to obtain a shell mold;
S500, ear mold forming: injecting molding materials into the shell mold, then pressurizing by using a pressurizing device, and removing the mold after cooling molding to obtain an ear mold primary blank;
S600, surface treatment: polishing and brightening the primary blank of the ear mold to obtain an ear mold main body;
S700, cannula molding: and inserting the prefabricated sound guide tube into a sound guide hole reserved in the ear mold main body, and testing firmness after adhesive bonding to obtain an ear mold finished product.
2. The soft ear mold processing process for customized hearing aids according to claim 1, wherein the redundancy removing process in step S200 is specifically: and dividing the first 3D model file according to preset ear mold process parameters to remove redundant parts and obtain a second 3D model file consistent with the target ear mold.
3. The customized hearing aid soft ear mold process according to claim 1 or 2, wherein the 3D shell model, when inputted into a 3D printer, generates a control program file for controlling the 3D printer to perform printing actions; the 3D printer takes UV light curing transparent resin as a printing raw material to execute printing action, and a shell blank formed by printing is provided with a plurality of exhaust holes.
4. The process for manufacturing a soft ear mold for a customized hearing aid according to claim 1, wherein the step S400 specifically comprises:
Immersing the shell primary blank in an organic solvent, immersing and cleaning for 3-5min, and taking out and air-drying to obtain a first cleaning body;
Placing the first cleaning body in an ultrasonic cleaning machine for ultrasonic cleaning for 3-10min, and taking out and air-drying to obtain a second cleaning body;
and curing the second cleaning body under UV light for 50-120s to obtain the shell mold.
5. The soft ear mold processing process for customized hearing aid according to claim 1, wherein in step S500, the pressurizing means performs the pressurizing treatment under the conditions of a pressure of 3-5MPa and a temperature of 65-75 ℃ for 10-20min.
6. The process for manufacturing the soft ear mold of the customized hearing aid according to claim 1, wherein the brightening process in the step S600 is specifically: immersing the polished ear mold blank into a container filled with the light lacquer so as to coat the light lacquer layer on the outer part of the ear mold blank, and absorbing and removing the redundant light lacquer on the surface of the ear mold blank in a suction machine under negative pressure.
7. The process of claim 1 or 6, further comprising laser marking the surface of the preform of the ear mold with an indicator after the polishing process and before the brightening process.
8. The customized hearing aid soft ear mold process of claim 7, wherein the light lacquer is a silicone lacquer for audiology.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410198955.6A CN118018936A (en) | 2024-02-22 | 2024-02-22 | Processing technology of soft ear mold of customized hearing aid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410198955.6A CN118018936A (en) | 2024-02-22 | 2024-02-22 | Processing technology of soft ear mold of customized hearing aid |
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| CN202410198955.6A Pending CN118018936A (en) | 2024-02-22 | 2024-02-22 | Processing technology of soft ear mold of customized hearing aid |
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| CN (1) | CN118018936A (en) |
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- 2024-02-22 CN CN202410198955.6A patent/CN118018936A/en active Pending
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