Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS5940799 [0001] The present invention relates to a method of manufacturing a ceramic diaphragm acoustic diaphragm. Ceramic powder 4 on the surface of an aluminum substrate formed in the eJ1 cone shape as a conventional method of manufacturing a diaphragm made of ceramic! By thermal spraying and coating to obtain a diaphragm integrated with the aluminum base, or by a method of coating all molds coated with ceramic powder on the surface of a cone-shaped mold [7] Is due to [7 or [7, in the case of this method of obtaining a ceramic diaphragm by coating by thermal spraying, the formed ceramic film is porous and it is difficult to obtain a dense and thin continuous film; Equipment cost and operation cost, and material loss is also large, so that an inexpensive ceramic diaphragm can not be obtained, and a method of demolding on a ceramic film ′ sprayed like the latter of the prior art example . Direct bonding of the ceramic film to the mold is very difficult in practice to be directly released because of its strong bondability to the mold. Object of the present invention 1 The above-mentioned conventional drawbacks are all solved and no special device is required. The CERA Link diaphragm KURAyasu fiK large fjkt ζ can be manufactured by a simple force method, and it is set to any thickness on a smooth surface. It is an object of the present invention to provide a method of manufacturing an acoustic diaphragm capable of obtaining a ceramic diaphragm that can be used. Another object of the present invention is to provide a method of manufacturing a diaphragm capable of obtaining a ceramic diaphragm integrally provided with a σ-case coil and an edge member. An embodiment of the present invention will be described with reference to the whole drawing with reference to VC1 Fig. 1 (^). A cone-shaped mold I made of metal material such as aluminum and iron is manufactured by The surface of the mold 10 is overcoated with a plastic film 2af vacuum forming machine. Any plastic film 2a may be used as long as it can be squeezed, and inexpensive human materials such as vinyl chloride, styrene, polyester and AHa can be used. By releasing the mold from the mold as shown in the following vr (0) 'vc, two types of diaphragms for silastics can 11-05-2019 1 be obtained. Thus, the mold 1? It is manufactured into a large number of diaphragm molds 2 as a seventeen matrix (FIG. 1 (D)). Rough surface f (formed by surface blasting or sanding of the diaphragm mold 2). Since the purpose of this purpose is the silastic type 4-r type, if the surface is smooth, the solution-like ceramic will repel in the form of water beads. The formation of a rough surface can be applied uniformly to any solution of eri solution like ceramic. Only L7 this state IJ does not mean a complete "wet" phenomenon to work as described later. Next VC 24 iih! IJ & type 2 i, r: J -7 shape k 'lt L (Because I show the neck part vc 7 I? イスコイル 3. In detail, t gobo pin portion t, and edge portion VC edge member 4 are respectively disposed. In this state, as shown in (F), a solution-like ceramic is applied and coated on the surface of the mold, and the double-cage coil 3 and the edge member 4 # / r are also applied in an integrated VC bonding process. As the solution-like ceramic, a water-soluble low heating type (about room temperature curing to about 200 ° C. curing) alumina-based or silica-based ceramic is used. Coating cords, brush coating, spray method, flow coater, etc. are optional, and they can be freely set according to the thickness of the diaphragm to be obtained as the film thickness. In this state, the film is placed and dried at a room temperature, for example, at room temperature for 2 to 3 hours, and temporarily cured to form the diaphragm film 5. In this case, it is possible to shorten the drying time by heating and drying. Next, releasing the mold 2 for the diaphragm from the mold 2 shown in (G) provides the diaphragm member 6 of the ceramic ring provided with the wxpz chair coil 3 and the edge member 4, but in this case, it is easy to release [ Get 'n'. This is because "wetting" penetrates the ceramic and the plastic originally, and the ceramic is contained in the mouth of the rough surface of the single rc type "2", and the appearance is only 1 wet. In addition, when the deno-de- of the diaphragm is tight and the mold release is fast, K can be softened by making the diaphragm mold two pieces rrx easy rmt type. This point is an advantage due to the fact that the diaphragm mold is a silastic type and the spreading type of solution ceramic, and the above-mentioned drafting resistance is not good. The mold can also be released. Next, the above-mentioned diaphragm member 6 is heated in the heating furnace 7 to cure one piece to show π ([1) vc]. The heating vorticity and the heating fllj are about 50 ° C. to 150 ° C. for about 1 hour, whereby the ceramic is completely cured and (I) ir as shown in 7J? The diaphragm A of the ceramic ring integrally provided with the chair coil 3 and the edge member 4 is obtained. FIG. 2 is a comparison diagram of the sound pressure frequency characteristics of the diaphragm manufactured by the above-described process and the conventional paper cone diaphragm B. The ceramic diaphragm A is extremely excellent also in strength. It turns out that According to the manufacturing method of the acoustic diaphragm of the present invention, the vibration of the ceramic ring can be mass-produced inexpensively without using any special device, and the diaphragm having a smooth surface without any porous sigma unlike the thermal spraying method. It can be done. In addition, it is possible to obtain a diaphragm in which the whole is made of ceramic, which is 11-05-2019 2 superior in characteristics and excellent in heat resistance, moisture resistance, weather resistance and the like. In addition, conventionally, it is necessary to separately bond to the coil and the edge member separately, and in the present invention, a diaphragm in which these are integrally joined to one another in the present invention can be obtained. There is almost no il, ti at all, such as the occurrence of distortion based on the drop. Furthermore, the thickness of the two-diaphragm film can be set arbitrarily, and since there is no fear of re-porosity different from the thermal spraying method, it is possible to obtain a very thin diaphragm. [0002] Brief description of the drawings [0003] The drawing is a friend to explain all the embodiments of the method of manufacturing an acoustic diaphragm according to the present invention, i 1 a a sectional view of the apparatus for explaining each process order, and FIG. 2 is a comparison characteristic view . l: Metal, 2a: Plastic film. 2 · · · Plastic diaphragm type, 3 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ceramic diaphragm coating, 6 · · · diaphragm. Patent Applicant Trio Corporation 11-05-2019 3
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