WO2018188195A1 - 声学器件的加工方法 - Google Patents

声学器件的加工方法 Download PDF

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Publication number
WO2018188195A1
WO2018188195A1 PCT/CN2017/090622 CN2017090622W WO2018188195A1 WO 2018188195 A1 WO2018188195 A1 WO 2018188195A1 CN 2017090622 W CN2017090622 W CN 2017090622W WO 2018188195 A1 WO2018188195 A1 WO 2018188195A1
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Prior art keywords
diaphragm
flow path
acoustic device
annular casing
processing
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PCT/CN2017/090622
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English (en)
French (fr)
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伦英军
戴志干
杨圣虎
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Goertek Inc
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Goertek Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms

Definitions

  • the invention belongs to the technical field of electronic product processing, and in particular, to a method for processing an acoustic device.
  • the development trend of the technology is that the area of the diaphragm is getting larger and larger, but the space occupied by the housing structure for carrying the diaphragm is getting smaller and smaller. In this way, the assembly space required for the components is saved and the product size is reduced. Therefore, the outer casing of the acoustic device is gradually adopting a ring design.
  • the prior art directly cuts off all the gates and runners around the shell structure after the injection molding completes the shell structure, and then performs diaphragm molding to set the diaphragm on the shell.
  • the usual method of resection is die cutting or ultrasonic ablation.
  • debris, powder, and the like are often left in the cutting portion.
  • the debris and powder remaining on the casing are easily doped into the diaphragm.
  • the diaphragm has high requirements on its own strength, rigidity and elastic deformation. If the debris or powder of the shell is doped, it will affect the performance of the diaphragm and affect the overall performance of the acoustic device. On the other hand, the strength of the annular casing is relatively weak, and deformation is likely to occur when the gate and the runner are cut off, and the size is difficult to ensure.
  • a method of processing an acoustic device comprising:
  • injection molding forms an annular casing of the acoustic device, and a flow channel structure formed by injection molding is connected to the outer periphery of the annular casing;
  • a magnetic circuit system is mounted on the annular casing, and a voice coil is attached to the diaphragm.
  • the edge of the annular casing is formed with four positioning holes, and the annular casing is positioned by the four positioning holes before the diaphragm is formed.
  • the housing injection mold is divided into an upper mold and a lower mold, and the upper mold and the lower mold are relatively positioned by at least two positioning columns disposed in the injection mold of the housing when the upper mold and the lower mold are engaged, and the housing injection mold is The flow passage in the middle passes through at least two positioning rods, so that at least two flow path positioning holes are formed on the injection molding flow path structure, and the annular housing is performed through the flow path positioning holes before forming the diaphragm Positioning.
  • flow channel positioning holes are formed on the flow channel structure, and the two of the flow channel positioning holes and the other two of the flow channel positioning holes are respectively located on two sides of the annular casing, and are axially symmetrically distributed.
  • the runner structure is removed by blanking or laser cutting.
  • the annular casing is positioned by using a diaphragm injection molding tool, and then the silica gel material is filled in the diaphragm injection molding tool to form a diaphragm by injection molding.
  • the temperature in the diaphragm injection molding tool is greater than 190 degrees.
  • the inventors of the present invention have found that in the prior art, all processing steps of the casing are completed first, and then the processing of the diaphragm is performed.
  • This processing step is a very mature processing design method, and those skilled in the art are familiar with conventional techniques. In the case of ideas, it is not considered to change the mature processing process, because it may bring other uncertain technical problems. However, the technical solution of the present invention violates The conventional design idea of the conventional technology is to perform the processing of the diaphragm first without completing all the processing steps of the casing. Therefore, the technical effects that can be brought about by the present invention are unanticipated or unanticipated by those skilled in the art, and the present invention is a new technical solution.
  • FIG. 1 is a schematic flow chart of a method for processing an acoustic device provided by the present invention
  • FIG. 2 is an annular casing and a runner structure formed by injection molding by a method according to an embodiment of the present invention
  • FIG. 3 is an annular casing and a runner structure formed by injection molding by a method according to an embodiment of the present invention
  • FIG. 4 is a schematic structural view of an annular casing after forming a diaphragm by the method provided by the present invention
  • Figure 5 is a schematic view showing the structure of the annular casing after the flow path structure is removed by the method provided by the present invention.
  • the present invention provides a method of processing an acoustic device that avoids the generation of debris, powder, which is generated when the injection molding channel structure is cut, and is sealed in the diaphragm of the acoustic device.
  • the main steps of the method provided by the present invention are as follows. First, an annular casing of an acoustic device is formed by an injection molding process using an injection mold for an injection molded casing.
  • the injection molds employed are configured such that gates, runners, and the like are attached to the periphery of the cavity for forming the annular casing, not to the inside of the cavity.
  • the annular casing and the runner structure connected thereto are taken out together from the injection mold.
  • the annular casing is positioned, and a diaphragm forming process is performed on the annular casing to form a diaphragm that seals the hollow region of the annular casing.
  • the flow path structure connected to the periphery of the annular casing is removed.
  • the subsequent assembly process of the annular casing can be performed to complete the overall assembly of the acoustic device.
  • the processing method provided by the invention violates the conventional processing procedure arrangement in the art, and jumps to the processing section of the diaphragm without first completing the processing steps of the annular casing, first forming on the annular casing
  • the diaphragm is then subjected to a cutting flow path process for the annular casing.
  • impurities such as debris and powder generated when the flow path is cut can be prevented from being doped into the diaphragm, and the performance of the diaphragm can be ensured and the performance of the diaphragm can be improved.
  • the method provided by the present invention can also reduce the possibility of deformation of the annular casing.
  • the structure of the annular casing is relatively fragile and it is possible to deform in various processing environments after forming.
  • the removal of the flow path structure is usually performed by punching or ultrasonic or laser cutting.
  • the applied force tends to deform the annular casing; in the laser cutting process, the temperature generated by the laser may also deform the annular casing.
  • the removal step of the flow channel structure is performed, and the diaphragm can improve the strength of the annular casing and reduce The annular casing is issued in the removal step The possibility of deformation.
  • Figure 2 shows the top view of the annular casing 1 and the runner structure 2 taken out of the injection mold.
  • a plurality of annular casings 1 can be injection molded in one set of molds.
  • two annular casings 1 can be formed by one injection molding. It can be seen that the flow channel structure 2 is connected to the outer periphery of the annular casing 1 to facilitate the forming process of the diaphragm on the annular casing 1 first.
  • four positioning holes 11 may be formed by injection molding at the edge position of the annular casing 1.
  • the entire annular casing 1 can be positioned by the above four positioning holes 11 before the forming process of the diaphragm is performed. This positioning method is more reliable and easy to operate, and can be accurately positioned by mold or positioning tool.
  • the present invention also provides a preferred embodiment for positioning the annular housing.
  • a housing injection mold that is divided into an upper mold and a lower mold is employed.
  • the upper and lower dies are relatively positioned by at least two positioning posts disposed inside the casing injection mold when fastened.
  • the inner side of the upper mold may have two positioning posts, and the lower mold has two positioning holes at corresponding positions.
  • the two positioning posts can be inserted into two positioning positions. Holes for positioning.
  • the flow path for guiding the inflow of the injection molding material passes through at least two of the positioning columns.
  • the annular casing 1 is positioned by the flow path positioning hole 21.
  • the flow path positioning hole 21 itself is formed by a positioning post for positioning, so the positioning accuracy of the flow path positioning hole 21 can be ensured.
  • the position of the edge of the annular casing can be selected without positioning, which is not limited by the present invention.
  • the diaphragm 3 is formed on the annular casing 1, and the hollowed-out area in the middle of the annular casing 1 is sealed.
  • a total of four flow path positioning holes 21 are formed in the flow path structure 2 around it.
  • the four-channel positioning holes are used to position the annular casing, which can ensure the accuracy of the positioning, and can conveniently realize the positioning of the diaphragm molding without additionally designing other positioning structures.
  • the flow path positioning hole or the positioning hole formed on the annular housing may be selected in the method.
  • the above two positioning holes may be disposed on the molded member, that is, as shown in FIGS. 2-4, the present invention is not limited thereto.
  • the flow path structure may be removed by punching or laser cutting.
  • the present invention does not specifically limit the manner of removing the flow channel structure, and the prior art optional removal methods are neglected.
  • An alternative variant of the invention As shown in Figs. 4 and 5, the diaphragm 3 has been formed on the annular casing 1, so that even if debris and powder are generated around the annular casing when the flow passage structure is removed, it is not doped into the diaphragm. 3 in.
  • the annular casing can be positioned by using a diaphragm injection molding tool, and the formed annular casing and the runner structure connected thereto are placed together in the corresponding diaphragm injection molding tool for accurate positioning. Thereafter, the diaphragm injection molding tool is filled with a silicone material to be injection molded on the annular casing 1 to form a diaphragm 3 that seals the hollow region, as shown in Figs.
  • the temperature of the injection molding to form the diaphragm is greater than 190 degrees, so that the silica gel material can exhibit good fluidity, can fill the cavity of the diaphragm injection molding tool, and form a diaphragm with uniform thickness. .
  • the overall structural features of the flow channel structure and the positioning mode of the diaphragm processing may be performed on the flow channel structure.
  • the rough cut is a step of cutting and/or cutting a flow path that is not directly connected to the annular casing.
  • the housing injection mold is injection molded into two annular housings 1 at a time, and the two annular housings 1 are connected by a flow channel structure 2.
  • the flow path structure 2 can be roughly cut off to separate the two annular casings 1 to form the structure shown in FIG. In this way, the positioning and processing of the single annular housing 1 is facilitated.
  • the rough cutting process does not cut off the portion where the flow path structure 2 is directly connected to the annular casing 1, and the generation of powder and debris at the edge position of the annular casing 1 is avoided.
  • the processing method provided by the present invention may further comprise the step of assembling components such as a voice coil and a magnetic circuit system of the acoustic device.
  • the resulting annular housing belongs to a support ring for a diaphragm. Therefore, after the step of removing the flow path structure is completed, the annular casing connecting diaphragm can be mounted together to the main casing of the acoustic device. Also, a diaphragm is attached to the diaphragm. A magnetic circuit system for driving the diaphragm and the voice coil is then assembled in the main housing. Through these assembly steps, a complete acoustic device can be made.
  • the annular housing formed in the above steps of the present invention may be a main housing of an acoustic device having a certain height in the axial direction and forming a side wall. That is, a space for accommodating other components of the acoustic device is formed.
  • the magnetic circuit system can be directly assembled on the annular casing, and the voice coil is attached to the diaphragm. Make a complete acoustic device.
  • the processing method of the present invention does not limit the formation of the acoustic device to be a combined device of the support ring and the diaphragm, or a combination of the main casing and the diaphragm. In the specific implementation, it can be selected according to the actual processing conditions and product requirements.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明公开了一种声学器件的加工方法。该方法包括：采用壳体注塑模具，注塑形成声学器件的环状壳体，注塑形成的流道结构连接于环状壳体的外围；对环状壳体进行定位，在环状壳体上形成封住环状壳体的中空区域的振膜；去除连接在环状壳体外围的流道结构；在环状壳体上装配磁路系统，在振膜上安装音圈。本发明的一个技术效果在于，能够避免切割流道结构产生的碎屑被封在振膜中。

Description

声学器件的加工方法 技术领域
本发明属于电子产品加工技术领域，具体地，本发明涉及一种声学器件的加工方法。
背景技术
近年来，消费类电子产品快速发展，产品发展方向趋向于小型化、精致化、智能化。在这种发展趋势下，对电子产品的零部件的性能、可靠性提出了更高的要求，以满足产品的性能设计。
以声学器件为例，技术发展趋势是振膜的面积越来越大，但用于承载振膜的壳体结构占用的空间越来越小。通过这种方式节省零部件所需的装配空间，减小产品尺寸。所以，声学器件的外壳逐渐采用环形设计。
对于这种声学器件的加工工艺，现有技术是在注塑完成壳体结构后，直接切除壳体结构周围的所有浇口与流道，然后再进行振膜成型，将振膜设置在壳体上。通常采用的切除方式为模刀切除或超声切除。但是，经过切除工艺后，往往会在切割处留有碎屑、粉末等残留。
之后在进行振膜加工的过程中，残留在壳体上的碎屑、粉末容易掺杂到振膜中。振膜对自身的强度、刚性以及弹性形变的性能要求较高，如果掺杂了壳体的碎屑或粉末，会影响到振膜的性能，进而对声学器件的整体性能造成影响。另一方面，环状的壳体强度比较较弱，在切除浇口和流道时容易出现变形，尺寸很难保证。
所以，有必要适应产品性能要求的发展，改进声学器件的加工工艺，提高振膜的性能，或者减小壳体变形的可能性。
发明内容
本发明的一个目的是提供一种声学器件的加工方法的新技术方案。
根据本发明的第一方面，提供了一种声学器件的加工方法，包括：
采用壳体注塑模具，注塑形成声学器件的环状壳体，注塑形成的流道结构连接于环状壳体的外围；
对环状壳体进行定位，在环状壳体上形成封住环状壳体的中空区域的振膜；
去除连接在环状壳体外围的流道结构；
在环状壳体上装配磁路系统，在振膜上安装音圈。
可选地，环状壳体的边缘位置形成有四个定位孔，在形成振膜之前，通过四个所述定位孔对环状壳体进行定位。
可选地，所述壳体注塑模具分为上模和下模，所述上模和下模扣合时通过设置在壳体注塑模具内的至少两支定位柱进行相对定位，壳体注塑模具中的流道至少经过两支所述定位柱，使注塑成型的流道结构上至少形成有两个流道定位孔，在形成振膜之前，通过所述流道定位孔对环状壳体进行定位。
可选地，在流道结构上形成四个流道定位孔，两个所述流道定位孔与另外两个所述流道定位孔分别位于环状壳体的两侧，呈轴对称分布。
可选地，通过冲裁或激光切割的方式去除流道结构。
可选地，采用振膜注塑工装对环状壳体进行定位，之后在振膜注塑工装中充入硅胶材料，注塑形成振膜。
可选地，注塑形成振膜时，振膜注塑工装中的温度大于190度。
可选地，在形成振膜之间，先进行粗切除，将不直接与环状壳体连接的流道切断和/或切除。
本发明的发明人发现，在现有技术中，先完成壳体的全部加工步骤，再进行振膜的加工，这种加工工序是十分成熟的加工工艺设计方式，本领域技术人员在熟知常规技术思路的情况下，不会考虑到改变成熟的加工工序，因为有可能带来其它不确定的技术问题。然而本发明的技术方案违反 了传统技术的常规设计思路，在不完成壳体的全部加工步骤的情况下，先进行振膜的加工。因此，本发明所能带来的技术效果是本领域技术人员从未想到的或者没有预期到的，故本发明是一种新的技术方案。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明提供的声学器件的加工方法的流程示意图；
图2是通过本发明一种实施方式提供的方法注塑形成的环状壳体和流道结构；
图3是通过本发明一种实施方式提供的方法注塑形成的环状壳体和流道结构；
图4是通过本发明提供的方法形成振膜后的环状壳体的结构示意图；
图5是通过本发明提供的方法去除流道结构后的环状壳体的结构示意图。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本发明提供了一种声学器件的加工方法，该方法能够避免切割注塑流道结构时产生的碎屑、粉末被封在声学器件的振膜中。如图1所示，本发明提供的方法的主要步骤如下步骤。首先，采用用于注塑壳体的注塑模具，通过注塑工艺形成声学器件的环状壳体。特别地，所采用的注塑模具配置为浇口、流道等结构都连接在用于形成环状壳体的型腔的外围，不位于型腔的内侧。完成注塑工艺后，将环状壳体及连接在其上的流道结构一同从注塑模具中取出。之后，对环状壳体进行定位，在环状壳体上进行振膜成型工艺，形成封住环状壳体的中空区域的振膜。在振膜成型之后，再将环状壳体外围连接的流道结构去除。最后，可以再对环状壳体进行后续的装配工序，完成声学装置的整体装配。
本发明提供的加工方法，违反了本领域中传统的加工工序安排，在不完全完成环状壳体的加工步骤的情况下，跳转到振膜的加工环节，先在环状壳体上形成振膜，之后再完成环状壳体加工的切割流道工序。这样，可以防止切割流道时产生的碎屑、粉末等杂质掺杂到振膜中，保证振膜性能一致性，提高振膜的性能。
另外，本发明提供的方法还能够减小环状壳体产生形变的可能性。环状壳体的结构较脆弱，有可能在成型之后的各个加工环境中变形。在现有技术中，去除流道结构通常采用冲裁或超声、激光切割的方式。在冲裁和超声切割工艺中，施加的作用力易使环状壳体发生变形；而在激光切割工艺中，激光产生的温度也有可能使环状壳体变形。在本发明提供的加工方法中，在环状壳体上已设有振膜的情况下，再进行流道结构的去除步骤，振膜能够对环状壳体起到提高强度的作用，减小环状壳体在去除步骤中发 生变形的可能性。
图2示出了从注塑模具中取出的环状壳体1和流道结构2的俯视结构。根据注塑模具的结构设计，一套模具中可以注塑形成多支环状壳体1。在图2所示的实施方式中，可以一次注塑形成两支环状壳体1。可见，所述流道结构2均连接在所述环状壳体1的外围，便于先在环状壳体1上实施振膜的成型加工步骤。
可选地，如图2、3所示，所述环状壳体1的边缘位置处可以通过注塑形成有四个定位孔11。在进行振膜的成型加工工艺之前，可以通过上述四个定位孔11对环状壳体1的整体进行定位。这种定位方式可靠性更高，而且便于操作，能够通过模具或定位工装便捷的实现准确定位。
本发明还提供了一种优选的对环状壳体进行定位的实施方式。在这种实施方式中，采用分为上模和下模的壳体注塑模具。所述上模和下模在扣合时通过设置在壳体注塑模具内侧的至少两支定位柱进行相对定位。例如，所述上模内侧可以具有两支定位柱，所述下模在相应位置处具有两个定位孔，当上模和下模扣合时，两支所述定位柱能够插在两个定位孔，实现定位。特别地，壳体注塑模具的型腔中，用于引导注塑料流入的流道至少要经过两支所述定位柱。这样，在完成注塑加工后，流道结构2上至少会形成两个由定位柱形成的流道定位孔21，如图2-4所示。在之后进行的振膜成型步骤中，通过所述流道定位孔21对环状壳体1进行定位。所述流道定位孔21本身是由用于定位的定位柱形成的，所以流道定位孔21的定位准确性能够得到保证。这样，环形壳体的边缘位置就可以选择不设置定位，本发明不对此进行限制。如图4所示，振膜3形成在环状壳体1上，将环状壳体1中间的镂空区域封住。
在图2-4所示的实施方式中，对于一支环形壳体，其周围的流道结构2上形成有共四个流道定位孔21。相应地，所采用的壳体注塑模具中具有四支定位柱。其中两个流道定位孔21位于环状壳体1的一侧，另外两个流道定位孔21位于环状壳体1的另外一侧，两组流道定位孔21相对于环状壳体1呈对称分布。
采用上述四个流道定位孔对环形壳体进行定位，既可以保证定位的准确性，又可以便捷的实现振膜成型的定位，不必额外设计其它定位结构。根据实际生产情况，可以在本方法中选择采用流道定位孔或者采用形成在环状壳体上的定位孔。或者，也可以上述两种定位孔都配置在成型件上，即如图2-4所示的情况，本发明不对此进行限制。
可选地，完成振膜的成型加工后，可以通过冲裁或激光切割的方式去除流道结构，本发明不对去除流道结构的方式进行具体限制，现有技术可选的去除方式都疏于本发明的可选变换方式。如图4、5所示，振膜3已经形成在了环状壳体1上，所以去除流道结构时即使在环状壳体周围产生了碎屑和粉末，也不会掺杂进入振膜3中。
可选地，可以采用振膜注塑工装对环状壳体进行定位，将成型的环状壳体以及连接在其上的流道结构一同置于对应的振膜注塑工装中，进行准确的定位。之后在振膜注塑工装中充入硅胶材料，以在环状壳体1上注塑形成封住镂空区域的振膜3，如图4、5所示。
进一步可选地，在振膜注塑工装中，注塑形成振膜的温度大于190度，以使硅胶材料能够表现出良好的流动性，能够充满振膜注塑工装的型腔，形成厚度均匀的振膜。
可选地，在进行振膜成型加工之前，视流道结构的整体结构特征和振膜加工的定位方式，可以先对流道结构进行粗切除。粗切除是将不直接与环状壳体连接的流道切断和/或切除的步骤。在图2所示的实施方式中，壳体注塑模具一次注塑成型两个环状壳体1，两个环状壳体1之间由流道结构2连接。则可以先对流道结构2进行粗切除处理，使两个环状壳体1分离，形成图3所示的结构。这样，便于对单个环状壳体1进行定位和加工。所述粗切除处理不将流道结构2与环状壳体1直接连接的部分切断，避免在环状壳体1的边缘位置产生粉末和碎屑。
另外的，在完成了上述对环状壳体、振膜等结构的加工步骤后，本发明提供的加工方法还可以包括对声学器件的音圈、磁路系统等部件进行装配的步骤。
在本发明图2-5所示的实施方式中，制成的环状壳体均属于一种振膜的支撑环。所以，在完成去除流道结构的步骤后，可以将环状壳体连通振膜一同安装到声学装置的主壳体上。并且，在振膜上安装连接振膜。之后在主壳体中装配用于驱动振膜和音圈的磁路系统。经过这些装配步骤，能够制成完整的声学装置。
在另一种实施方式中，本发明上述步骤中制成的环状壳体可以是一种声学装置的主壳体，该环状壳体在轴向上具有一定高度，形成有侧壁。即，形成有用于容纳声学装置的其它部件的空间。在这种实施方式中，在完成去除流道结构的步骤后，可以直接在环状壳体上装配磁路系统，在振膜上连接安装音圈。制成完整的声学装置。
本发明的加工方法并不限制形成的声学器件是支撑环与振膜的组合器件，还是主壳体与振膜的组合器件。在具体实施时，可以根据实际加工条件和产品要求进行选择。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (10)

  1. 一种声学器件的加工方法，包括：
    采用壳体注塑模具，注塑形成声学器件的环状壳体，注塑形成的流道结构连接于环状壳体的外围；
    对环状壳体进行定位，在环状壳体上形成封住环状壳体的中空区域的振膜；
    去除连接在环状壳体外围的流道结构。
  2. 根据权利要求1所述的声学器件的加工方法，其特征在于，环状壳体的边缘位置形成有四个定位孔，在形成振膜之前，通过四个所述定位孔对环状壳体进行定位。
  3. 根据权利要求1所述的声学器件的加工方法，其特征在于，所述壳体注塑模具分为上模和下模，所述上模和下模扣合时通过设置在壳体注塑模具内的至少两支定位柱进行相对定位，壳体注塑模具中的流道至少经过两支所述定位柱，使注塑成型的流道结构上至少形成有两个流道定位孔，在形成振膜之前，通过所述流道定位孔对环状壳体进行定位。
  4. 根据权利要求3所述的声学器件的加工方法，其特征在于，在流道结构上形成四个流道定位孔，两个所述流道定位孔与另外两个所述流道定位孔分别位于环状壳体的两侧，呈轴对称分布。
  5. 根据权利要求1所述的声学器件的加工方法，其特征在于，通过冲裁或激光切割的方式去除流道结构。
  6. 根据权利要求1所述的声学器件的加工方法，其特征在于，采用振膜注塑工装对环状壳体进行定位，之后在振膜注塑工装中充入硅胶材料，注塑形成振膜。
  7. 根据权利要求6所述的声学器件的加工方法，其特征在于，注塑形成振膜时，振膜注塑工装中的温度大于190度。
  8. 根据权利要求1所述的声学器件的加工方法，其特征在于，在形成振膜之间，先进行粗切除，将不直接与环状壳体连接的流道切断和/或 切除。
  9. 根据权利要求1所述的声学器件的加工方法，其特征在于，在去除流道结构后，将环状壳体装配到声学装置的主壳体上，在主壳体上装配磁路系统，在振膜上安装音圈。
  10. 根据权利要求1所述的声学器件的加工方法，其特征在于，在去除流道结构后，在环状壳体上装配磁路系统，在振膜上安装音圈。
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