JP2018069114A - Manufacturing method of filter member - Google Patents

Manufacturing method of filter member Download PDF

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JP2018069114A
JP2018069114A JP2016208269A JP2016208269A JP2018069114A JP 2018069114 A JP2018069114 A JP 2018069114A JP 2016208269 A JP2016208269 A JP 2016208269A JP 2016208269 A JP2016208269 A JP 2016208269A JP 2018069114 A JP2018069114 A JP 2018069114A
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mesh
mold
resin
cylindrical
filter member
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JP6736449B2 (en
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保博 八尾
Yasuhiro Yao
保博 八尾
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Tigers Polymer Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a filter member which enlarges a diameter of a cylindrical mesh and a filtration area in a cylindrical filter member, permits integration of a resin part and mesh and simplifies composition of a mold.SOLUTION: A filter member configured such that a resin part is integrated to a cylindrical mesh 2 is manufactured according to an insert molding method. In a manufacturing method of the filter membrane, an outer circumferential surface of a first resin part is formed in a diameter approximately equal to an outer circumferential surface of a mesh exposition part, a cavity mold arranged opposite to the mesh exposition part is relatively moved in a direction running along a center axis of a cylinder with respect to a core pin 35, closes the mold, a plurality of projections 33, 33 are provided separately on a circumferential direction on a part of the mold by which the first resin part is molded, the projections 33, 33 are formed in such a shape that a tip of the projection is inclined with respect to a mold-closing direction of the mold, the inclined tip of the projection 33 is brought into contact with an end part of the cylindrical mesh 2 upon the mold-closing, a contacting part of the cylindrical mesh 2 is deformed in a radial direction of a cylinder, the mold-closing is completed, resin is injected in the above described state and the resin part is formed.SELECTED DRAWING: Figure 7

Description

本発明は、円筒状に形成されたメッシュに合成樹脂製の樹脂部が一体化されたフィルタ部材の製造方法に関する。特に射出成形を利用して樹脂部を形成するフィルタ部材の製造方法に関する。 The present invention relates to a method for manufacturing a filter member in which a synthetic resin resin portion is integrated with a cylindrical mesh. In particular, the present invention relates to a method for manufacturing a filter member for forming a resin portion using injection molding.

メッシュに対し樹脂部を一体成形したフィルタ部材が実用化されている。特にメッシュを円筒状に形成して、円筒の側部でメッシュにより濾過を行うような、円筒状のフィルタ部材が、オイルフィルタや燃料フィルタ、ストレーナや濾過エレメント等、各種液体や気体中の塵埃を取り除くフィルタ部材として利用されている。 A filter member in which a resin portion is integrally formed with a mesh has been put into practical use. In particular, a cylindrical filter member that forms a mesh in a cylindrical shape and performs filtration with the mesh at the side of the cylinder is capable of collecting dust in various liquids and gases such as oil filters, fuel filters, strainers, and filter elements. It is used as a filter member to be removed.

この様なフィルタ部材を、射出成形を利用して製造する技術は公知である。円筒状に形成したメッシュをインサート部材として金型内部に配置し、樹脂を射出して、樹脂部を形成一体化する、いわゆるインサート成形法により、円筒状のフィルタ部材が製造される。 A technique for manufacturing such a filter member using injection molding is known. A cylindrical filter member is manufactured by a so-called insert molding method in which a mesh formed in a cylindrical shape is placed inside a mold as an insert member, and resin is injected to form and integrate a resin portion.

例えば、特許文献１には、メッシュ（スクリーン）を円筒状に形成する際に、外側に突出する突起部を、折曲げ加工により形成し、かかる突起部を、補強用部材中に埋設するようにインサート成形を行うと、流体圧によるメッシュの変形が抑制され、燃料の流れを妨げることの無い燃料フィルタが得られることが開示されている。 For example, in Patent Document 1, when a mesh (screen) is formed into a cylindrical shape, a protruding portion protruding outward is formed by bending, and the protruding portion is embedded in a reinforcing member. It is disclosed that when insert molding is performed, deformation of the mesh due to fluid pressure is suppressed, and a fuel filter that does not hinder the flow of fuel is obtained.

特開平１１−０３７０１０号公報Japanese Patent Application Laid-Open No. 11-037010

ところで、特許文献１に開示されるような円筒状フィルタにおいては、円筒状メッシュの両端部のそれぞれに、樹脂部を設け、樹脂部に円筒状メッシュの端部を埋入させ、埋入部では円筒状メッシュの外側にも内側にも樹脂が存在するようにされていた。そのため、円筒状メッシュの両端部で、樹脂部がメッシュの外周面よりも半径方向外側に張り出すように大きな径で形成されることになる。 By the way, in the cylindrical filter as disclosed in Patent Document 1, a resin portion is provided at each of both ends of the cylindrical mesh, and the end of the cylindrical mesh is embedded in the resin portion, and the cylindrical portion is cylindrical in the embedded portion. Resin was present both inside and outside the mesh. Therefore, the resin portion is formed with a large diameter at both ends of the cylindrical mesh so that the resin portion protrudes radially outward from the outer peripheral surface of the mesh.

そのような張り出しがあると、樹脂部とメッシュの一体化は確実なものとなる一方で、フィルタ部材のスペースが限られる場合などに、円筒状メッシュの径が小さくなってしまうこととなり、フィルタの濾過面積が減少しやすい。また、そのような張り出しがあると、円筒状メッシュが露出する部分に対向するキャビティ型を、スライド機構等を用いて円筒の半径方向に沿って型閉じする必要があり、金型の構成が複雑にならざるを得ない。 If there is such an overhang, the resin part and the mesh are surely integrated, but when the space of the filter member is limited, the diameter of the cylindrical mesh is reduced, and the filter The filtration area tends to decrease. In addition, if there is such an overhang, it is necessary to close the cavity mold facing the part where the cylindrical mesh is exposed along the radial direction of the cylinder using a slide mechanism, etc., and the mold configuration is complicated. I have to be.

本発明の目的は、円筒状のフィルタ部材を成形するにあたって、円筒状メッシュの径を拡大しつつ、樹脂部とメッシュとの一体化を確実なものとすることにある。また、本発明の他の目的は、インサート射出成形法により円筒状フィルタ部材を製造する際の、金型の構成をより簡単な構成とすることにある。
An object of the present invention is to ensure integration of a resin portion and a mesh while enlarging the diameter of the cylindrical mesh when forming a cylindrical filter member. Another object of the present invention is to make the structure of the mold simpler when manufacturing the cylindrical filter member by the insert injection molding method.

発明者は、省スペースレイアウト中でも円筒状メッシュの径を拡大するために、円筒状メッシュの内外に存在するコアピンとキャビティ型を、円筒状メッシュの中心軸に沿って型閉じしてインサート成形を行うことを発想した。このようにすれば、円筒状メッシュの外径と樹脂部の外径を略一致させることが可能となって、メッシュの径を大きくできると共に、金型も簡単な構成にすることができる。 The inventor performs insert molding by closing the core pin and the cavity mold existing inside and outside the cylindrical mesh along the central axis of the cylindrical mesh in order to enlarge the diameter of the cylindrical mesh even in the space-saving layout. I thought of that. If it does in this way, it becomes possible to make the outer diameter of a cylindrical mesh and the outer diameter of a resin part substantially correspond, and while being able to enlarge the diameter of a mesh, a metal mold | die can also be made a simple structure.

しかしながら、発明者がそのような検討を行ったところ、円筒状メッシュの端部が樹脂部に一体化される部分において、メッシュと樹脂の一体化が不十分となって、メッシュの端部がほつれたり、フィルタ使用時の内圧等によってメッシュ端部が樹脂部から外れたりするおそれがあることが判明した。 However, when the inventor conducted such a study, in the portion where the end portion of the cylindrical mesh is integrated with the resin portion, the integration of the mesh and the resin becomes insufficient, and the end portion of the mesh frays. It has been found that there is a possibility that the mesh end part may come off from the resin part due to an internal pressure or the like when using the filter.

発明者は、さらに検討を行い、複数の傾斜した突条をキャビティ型に設け、型閉じ時に、突条の傾斜を利用して、円筒状メッシュの端部を半径方向に変形させるようにすると、メッシュと樹脂部の一体化が十分となることを知見し、本発明を完成させた。 The inventor conducted further studies, provided a plurality of inclined protrusions in the cavity mold, and when the mold was closed, using the inclination of the protrusions, the end of the cylindrical mesh was deformed in the radial direction. It was found that the integration of the mesh and the resin part was sufficient, and the present invention was completed.

本発明は、円筒状に形成されたメッシュに合成樹脂製の樹脂部が一体化されたフィルタ部材を、射出成形を利用して製造する方法であって、前記フィルタ部材では、円筒状メッシュの両端部に、リング状、円筒状もしくは円板状の第１樹脂部及び第２樹脂部がそれぞれ一体化されており、第１樹脂部と第２樹脂部の間でメッシュの一部が露出していて、第１樹脂部の外周面と、前記メッシュ露出部の外周面が、ほぼ同じ径で連続した円筒状の面とされており、前記射出成形は、前記樹脂部を形成可能な射出成形金型に対し、円筒状メッシュを所定の位置に配置した状態で金型を型閉じした後、樹脂を射出して、樹脂部を形成しつつメッシュに一体化するよう行われ、前記射出成形金型は、キャビティ型とコアピンを有すると共に、前記メッシュ露出部の外側に対向配置されるキャビティ型の部分が、前記メッシュ露出部の内側に配置されるコアピンに対し、円筒の中心軸に沿う方向に相対移動して型閉じされるものであり、さらに、前記射出成形金型において、第１樹脂部と第２樹脂部の少なくとも一方の形状を規定する部分には、金型のキャビティの内側に向かって突出するように、複数本の突条が周方向に離間して設けられており、かつ、前記突条は、金型の型閉じ方向に対し突条の突端が傾斜した形状とされていて、金型を型閉じする際に、前記突条の傾斜した突端が、円筒状メッシュの端部に接触して、円筒状メッシュの接触部が円筒の半径方向に変形した状態となって型閉じが完了し、かかる状態で樹脂が射出されて樹脂部が形成される、フィルタ部材の製造方法である（第１発明）。 The present invention is a method of manufacturing a filter member in which a synthetic resin resin part is integrated with a mesh formed in a cylindrical shape by using injection molding, and the filter member includes both ends of the cylindrical mesh. The ring-shaped, cylindrical or disc-shaped first resin portion and second resin portion are integrated with each other, and a part of the mesh is exposed between the first resin portion and the second resin portion. The outer peripheral surface of the first resin portion and the outer peripheral surface of the mesh exposed portion are formed into a cylindrical surface that is continuous with substantially the same diameter, and the injection molding is an injection molding metal that can form the resin portion. The mold is closed with the cylindrical mesh placed in a predetermined position with respect to the mold, and then the resin is injected to be integrated with the mesh while forming the resin portion. Has a cavity mold and a core pin, and the mesh The cavity mold portion opposed to the outside of the exposed portion is moved relative to the core pin arranged inside the mesh exposed portion in the direction along the central axis of the cylinder, and the mold is closed. In the injection mold, at least one of the first resin portion and the second resin portion is provided with a plurality of protrusions around the portion so as to protrude toward the inside of the mold cavity. The protrusions are provided so as to be spaced apart from each other in the direction, and the protrusions have a shape in which the protrusion ends of the protrusions are inclined with respect to the mold closing direction of the mold. The slanted tip of the cylinder comes into contact with the end of the cylindrical mesh, the contact of the cylindrical mesh is deformed in the radial direction of the cylinder, and the mold closing is completed. In this state, the resin is injected and the resin is injected. This is a method for manufacturing a filter member in which a portion is formed. The first aspect of the present invention).

第１発明において、好ましくは、円筒状メッシュがテーパを有している。（第２発明）。また、第１発明もしくは第２発明において、好ましくは、金型の第１樹脂部の形状を規定する部分に前記突条が設けられ、突条の突端との接触により、前記円筒状メッシュの接触部が円筒の半径方向内側に変形して、円筒状メッシュの端部が半径方向に波打つように変形した状態で型閉じが完了する（第３発明）。また、第１発明ないし第３発明のいずれかにおいて、好ましくは、突条の数が３以上６以下であり、突条が周方向にほぼ等間隔に設けられる。（第４発明）。 In the first invention, the cylindrical mesh preferably has a taper. (Second invention). In the first invention or the second invention, preferably, the protrusion is provided in a portion that defines the shape of the first resin portion of the mold, and the cylindrical mesh is brought into contact by contact with the protrusion end of the protrusion. The mold closing is completed in a state where the portion is deformed inwardly in the radial direction of the cylinder and the end of the cylindrical mesh is deformed so as to wave in the radial direction (third invention). In any one of the first to third inventions, the number of ridges is preferably 3 or more and 6 or less, and the ridges are provided at substantially equal intervals in the circumferential direction. (4th invention).

本発明のフィルタ部材の製造方法（第１発明）によれば、円筒状メッシュの径を大きくできると共に、金型の構成も簡単になり、樹脂部とメッシュとの一体化も確実なものとなる。さらに、第２発明のようにすると、メッシュの露出部への樹脂のはみ出しも抑制できる。また、さらに、第３発明や第４発明のようにすると、メッシュの露出部にしわなどが発生しにくくなって、フィルタ部材の品質が向上する。
According to the method for manufacturing a filter member of the present invention (first invention), the diameter of the cylindrical mesh can be increased, the structure of the mold is simplified, and the resin part and the mesh are also surely integrated. . Furthermore, if it is made like 2nd invention, the protrusion of the resin to the exposed part of a mesh can also be suppressed. Furthermore, if it is made like 3rd invention or 4th invention, it will become difficult to generate | occur | produce a wrinkle etc. in the exposed part of a mesh, and the quality of a filter member will improve.

本発明の製造方法により製造されるフィルタ部材の外観形状を示す図である。It is a figure which shows the external appearance shape of the filter member manufactured by the manufacturing method of this invention. 本発明の製造方法により製造されるフィルタ部材のＡ−Ａ断面図である。It is AA sectional drawing of the filter member manufactured by the manufacturing method of this invention. 本発明の製造方法により製造されるフィルタ部材のＢ−Ｂ断面図である。It is BB sectional drawing of the filter member manufactured by the manufacturing method of this invention. 本発明の製造方法により製造されるフィルタ部材のＦ−Ｆ断面図である。It is FF sectional drawing of the filter member manufactured by the manufacturing method of this invention. 本発明の製造方法により製造されるフィルタ部材のＣ−Ｃ断面図である。It is CC sectional drawing of the filter member manufactured by the manufacturing method of this invention. 本発明の製造方法に使用される射出成形金型の構成の例を示す模式図である。It is a schematic diagram which shows the example of a structure of the injection mold used for the manufacturing method of this invention. 本発明の製造方法の工程の一部を示す模式図である。It is a schematic diagram which shows a part of process of the manufacturing method of this invention. 本発明の製造方法の工程の一部を示す模式図である。It is a schematic diagram which shows a part of process of the manufacturing method of this invention.

以下図面を参照しながら、液体の移送用配管中に使用されるフィルタ部材を例として、発明の実施形態について説明する。発明は以下に示す個別の実施形態に限定されるものではなく、その形態を変更して実施することもできる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking a filter member used in a liquid transfer pipe as an example. The invention is not limited to the individual embodiments shown below, and can be carried out by changing the form.

図１は、後述する製造方法により製造されるフィルタ部材１の外観形状を示す図である。フィルタ部材１は、円筒状に形成されたメッシュ２と、合成樹脂製の樹脂部１１，１２を有し、メッシュ２と樹脂部１１，１２とは、メッシュの端部で一体化されている。後述するように、フィルタ部材１は射出成形を利用して製造される。 FIG. 1 is a diagram showing an external shape of a filter member 1 manufactured by a manufacturing method described later. The filter member 1 has a mesh 2 formed in a cylindrical shape and resin portions 11 and 12 made of synthetic resin, and the mesh 2 and the resin portions 11 and 12 are integrated at an end portion of the mesh. As will be described later, the filter member 1 is manufactured using injection molding.

フィルタ部材１では、円筒状メッシュ２の両端部に、樹脂部として、第１樹脂部１１及び第２樹脂部１２がそれぞれ一体化されている。すなわち、円筒状メッシュ２の一端に第１樹脂部１１が一体化され、円筒状メッシュ２の他端に第２樹脂部１２が一体化されている。第１樹脂部１１及び第２樹脂部１２は、リング状、円筒状もしくは円板状に形成され、第１樹脂部１１及び第２樹脂部１２の少なくとも一方は、リング状もしくは円筒状に形成されている。本実施形態においては、第１樹脂部１１が円板状に、第２樹脂部１２が円筒状に形成されている。なお、第１樹脂部１１や第２樹脂部１２には、溝や突起等や、ステーやフックなどが一体に形成されていてもよい。 In the filter member 1, a first resin portion 11 and a second resin portion 12 are integrated as both resin portions at both ends of the cylindrical mesh 2. That is, the first resin portion 11 is integrated with one end of the cylindrical mesh 2, and the second resin portion 12 is integrated with the other end of the cylindrical mesh 2. The first resin portion 11 and the second resin portion 12 are formed in a ring shape, a cylindrical shape, or a disc shape, and at least one of the first resin portion 11 and the second resin portion 12 is formed in a ring shape or a cylindrical shape. ing. In the present embodiment, the first resin portion 11 is formed in a disc shape, and the second resin portion 12 is formed in a cylindrical shape. The first resin portion 11 and the second resin portion 12 may be integrally formed with grooves, protrusions, stays, hooks, and the like.

フィルタ部材１において、第１樹脂部１１と第２樹脂部１２の間でメッシュ２の一部が露出しており、この露出した部分（メッシュ露出部）によって、フィルタとしての機能が果たされる。 In the filter member 1, a part of the mesh 2 is exposed between the first resin part 11 and the second resin part 12, and the function as a filter is fulfilled by the exposed part (mesh exposed part).

必要に応じ、特許文献１の発明にもあるように、メッシュ２が露出する部分に隣接させて、第１樹脂部１１と第２樹脂部１２の間にまたがるように、円筒中心軸に沿って延在する柱状部（図示せず）を設け、メッシュの露出部が矩形窓状になるようにしてもよい。柱状部もメッシュと一体化することが好ましい。なお、柱状部を設けることは必須ではないが、柱状部を設けると、フィルタ部材１においてメッシュの形状が維持しやすくなる。また、射出成形時に、柱状部を通じて、第１樹脂部１１と第２樹脂部に順次樹脂を充填できる。また、フィルタ部材１は、第１樹脂部１１と第２樹脂部１２に加え、柱状部以外の部分（例えば接続部やシール部等）を備えていてもよい。 If necessary, as in the invention of Patent Document 1, it is adjacent to the portion where the mesh 2 is exposed and extends between the first resin portion 11 and the second resin portion 12 along the central axis of the cylinder. An extending columnar portion (not shown) may be provided so that the exposed portion of the mesh has a rectangular window shape. The columnar part is also preferably integrated with the mesh. In addition, although it is not essential to provide a columnar part, when a columnar part is provided, it becomes easy to maintain the mesh shape in the filter member 1. Moreover, the resin can be sequentially filled into the first resin portion 11 and the second resin portion through the columnar portion at the time of injection molding. In addition to the first resin portion 11 and the second resin portion 12, the filter member 1 may include a portion other than the columnar portion (for example, a connection portion or a seal portion).

メッシュ２の素材は、金属製であってもよいし、樹脂製であってもよい。メッシュは線を編んだ網状の形態であってもよいし、板や膜に多数の穴を設けた形態であってもよい。また、メッシュを円筒状にする手段は、帯状のメッシュ素材を円筒状に丸めて、両端部同士を接合したものであってもよい。接合は、接着、溶接、熱溶着、かしめ、係止等の手段によることができる。フィルタ部材１が柱状部を有する場合には、メッシュ素材の両端部が柱状部の内部に埋め込まれていることが好ましい。 The material of the mesh 2 may be made of metal or resin. The mesh may have a net-like shape knitted with a wire, or may have a shape in which a large number of holes are provided in a plate or a film. The means for making the mesh cylindrical may be one obtained by rounding a belt-like mesh material into a cylindrical shape and joining both ends. The joining can be performed by means such as adhesion, welding, heat welding, caulking, or locking. When the filter member 1 has a columnar part, it is preferable that both ends of the mesh material are embedded in the columnar part.

円筒状メッシュ２は、テーパを有していることが好ましい。本実施形態のように、樹脂部の一方が円板状である場合には、円板状である第１樹脂部１１から、リング状もしくは円筒状である第２樹脂部１２に向かうにしたがって、円筒状メッシュ２の径が拡径するようなテーパが与えられていることが好ましい。 The cylindrical mesh 2 preferably has a taper. As in the present embodiment, when one of the resin parts is disk-shaped, from the first resin part 11 that is disk-shaped toward the second resin part 12 that is ring-shaped or cylindrical, It is preferable that a taper that increases the diameter of the cylindrical mesh 2 is provided.

第１樹脂部１１とメッシュ２の端部とは、円筒の全周にわたって一体化されている。同様に、第２樹脂部１２とメッシュ２の端部とは、円筒の全周にわたって一体化されている。一体化は、これら樹脂部を構成する合成樹脂が、メッシュ２の網目の空間部に入り込むように行われることが好ましい。また、一体化は、これら樹脂部を構成する合成樹脂が、メッシュ２を構成する素材と密着するように行われることが好ましい。 The 1st resin part 11 and the edge part of the mesh 2 are integrated over the perimeter of a cylinder. Similarly, the 2nd resin part 12 and the edge part of the mesh 2 are integrated over the perimeter of a cylinder. The integration is preferably performed so that the synthetic resin constituting the resin portion enters the space portion of the mesh 2 mesh. Further, the integration is preferably performed so that the synthetic resin constituting these resin portions is in close contact with the material constituting the mesh 2.

第１樹脂部１１の外周面と、円筒状メッシュ２の露出部の外周面とは、ほぼ同じ径で連続した円筒状の面とされている。すなわち、両者は互いにほぼ面一な面とされている。後述するキャビティ型の脱型が可能な範囲であれば、両者の間に小さな段差や角度の変化が存在していてもよい。同様に、第２樹脂部１２の内周面と、円筒状メッシュ２の内周面とは、ほぼ同じ径で連続した円筒状の面とされている。後述するコアピンの脱型が可能な範囲であれば、両者の間に小さな段差や角度の変化が存在していてもよい。 The outer peripheral surface of the first resin portion 11 and the outer peripheral surface of the exposed portion of the cylindrical mesh 2 are cylindrical surfaces that are continuous with substantially the same diameter. That is, they are almost flush with each other. As long as the cavity mold described later can be removed, there may be a small step or a change in angle between them. Similarly, the inner peripheral surface of the second resin portion 12 and the inner peripheral surface of the cylindrical mesh 2 are cylindrical surfaces that are continuous with substantially the same diameter. As long as the core pin described later can be removed, there may be a small step or angle change between them.

第１樹脂部１１の外周部には、複数の溝（凹所）１３，１３が設けられている。溝１３，１３は、第１樹脂部１１の半径方向及び円筒状メッシュの中心軸方向に沿って、第１樹脂部１１の上縁側外周部を切り欠くように、設けられている。そして、溝１３，１３は、円筒状メッシュの中心軸に対して溝の底面が斜めに傾くように、設けられている。 A plurality of grooves (recesses) 13 and 13 are provided on the outer peripheral portion of the first resin portion 11. The grooves 13 and 13 are provided so as to cut out the outer peripheral portion on the upper edge side of the first resin portion 11 along the radial direction of the first resin portion 11 and the central axis direction of the cylindrical mesh. The grooves 13, 13 are provided such that the bottom surface of the groove is inclined with respect to the central axis of the cylindrical mesh.

溝１３，１３は２つ以上、好ましくは３つ以上設けられる。また、溝１３，１３の数は６以下であることが好ましい。また、溝１３，１３は、第１樹脂部１１の周方向にほぼ等間隔に設けられることが好ましい。また、第１樹脂部１１と第２樹脂部１２との間に柱状部が設けられる場合には、柱状部が、周方向で溝と溝の中間部（特に中央）となる位置に設けられることが好ましい。 Two or more grooves 13, 13 are provided, preferably three or more. Further, the number of grooves 13, 13 is preferably 6 or less. Moreover, it is preferable that the grooves 13 and 13 are provided at substantially equal intervals in the circumferential direction of the first resin portion 11. Moreover, when a columnar part is provided between the 1st resin part 11 and the 2nd resin part 12, a columnar part is provided in the position used as the intermediate part (especially center) of a groove | channel and a groove | channel in the circumferential direction. Is preferred.

図２ないし図５により、第１樹脂部１１に対し、円筒状メッシュ２がどのような形態で一体化されているかを詳述する。図２は、図１のＡ−Ａ線における断面であり、周方向において溝と溝の中央部を通る面での断面である。図３は、図１のＢ−Ｂ線における断面であり、周方向において溝を通る面での断面である。図４は、図１のＦ−Ｆ線における断面であり、周方向において溝のすぐわきを通る面での断面である。図５は、第１樹脂部１１とメッシュ２の上端部の、図１のＣ−Ｃ線における断面である The form in which the cylindrical mesh 2 is integrated with the first resin portion 11 will be described in detail with reference to FIGS. FIG. 2 is a cross section taken along the line AA in FIG. 1, and is a cross section taken along a plane passing through the groove and the center of the groove in the circumferential direction. FIG. 3 is a cross section taken along the line BB in FIG. 1 and is a cross section taken along a plane passing through the groove in the circumferential direction. FIG. 4 is a cross section taken along line FF in FIG. 1, and is a cross section taken along a surface passing through the groove in the circumferential direction. FIG. 5 is a cross-sectional view taken along line CC of FIG. 1, of the first resin portion 11 and the upper end portion of the mesh 2.

円筒状メッシュ２は、メッシュが露出する部分では、ほぼ円形断面を有する円筒状である。一方、円筒状メッシュ２が第１樹脂部１１に一体化された端部においては、図５に示すように、周方向の一部ではメッシュ端部が半径方向内側に入り、周方向の他の部分ではメッシュ端部が相対的に半径方向外側に出るように、円筒状メッシュの端部が半径方向に波打つように変形した状態で第１樹脂部１１に対し一体化されている。特に、メッシュ端部は、溝１３，１３が存在する部分で半径方向内側に入り、周方向で溝と溝の間の中央部で相対的に半径方向外側に出るように、波打った形態となっている。波打ちの形態は、半径方向の位置の変化が周方向に滑らかに連続した変化となるような形態であることが好ましい。なお、円筒状メッシュ２の端部が半径方向内側に入った部分の溝１３付近での形態は、円筒の軸方向に沿って見て、半径方向内側に向けて凸となる形態であっても良いし、直線状であっても良いし、半径方向外側に向けて凸となる形態であっても良い。 The cylindrical mesh 2 is a cylindrical shape having a substantially circular cross section in a portion where the mesh is exposed. On the other hand, at the end portion where the cylindrical mesh 2 is integrated with the first resin portion 11, as shown in FIG. In the portion, the end portion of the cylindrical mesh is integrated with the first resin portion 11 in a deformed state so as to wave in the radial direction so that the mesh end portion is relatively radially outward. In particular, the mesh end portion is wavy so that it enters radially inward at the portion where the grooves 13, 13 are present, and exits relatively radially outward in the central portion between the grooves in the circumferential direction. It has become. The wavy form is preferably such that the change in position in the radial direction is a smoothly continuous change in the circumferential direction. In addition, the form in the vicinity of the groove 13 where the end of the cylindrical mesh 2 enters the radially inner side may be a form that protrudes radially inward as viewed along the axial direction of the cylinder. It may be good, may be linear, or may be convex toward the outside in the radial direction.

図２に示すように、円筒状メッシュ２の端部が波打って半径方向外側に出た部分は、第１樹脂部１１の外周面と、ほぼ同じ位置まで外側に出た状態で、第１樹脂部１１に一体化されている。また、図３や図４に示すように、円筒状メッシュ２の端部が波打って半径方向内側に入った部分は、第１樹脂部１１の外周面よりも内側に位置していて、第１樹脂部１１に埋入されるように一体化されている。すなわち、図３や図４（特に図４）に示すような断面では、円筒状メッシュ２の端部よりも半径方向外側に、第１樹脂部１１を構成する合成樹脂が存在していて、円筒状メッシュ２の端部を覆うように一体化している。 As shown in FIG. 2, the end portion of the cylindrical mesh 2 that undulates and protrudes outward in the radial direction protrudes outward to substantially the same position as the outer peripheral surface of the first resin portion 11. It is integrated with the resin part 11. Further, as shown in FIG. 3 and FIG. 4, the portion where the end portion of the cylindrical mesh 2 wavyly enters inside in the radial direction is located inside the outer peripheral surface of the first resin portion 11, and It is integrated so that it may be embedded in one resin part 11. That is, in the cross section as shown in FIG. 3 and FIG. 4 (particularly FIG. 4), the synthetic resin constituting the first resin portion 11 exists radially outside the end of the cylindrical mesh 2, and the cylinder It is integrated so that the edge part of the mesh 2 may be covered.

フィルタ部材１を構成する樹脂材料としては、射出成形が可能な種々の合成樹脂が使用できる。合成樹脂は、熱可塑性樹脂であってもよく、熱硬化性樹脂や合成ゴムであってもよい。熱可塑性樹脂としては、典型的には、オレフィン系樹脂などの汎用樹脂や、ポリアミド樹脂、ポリアセタール樹脂などのエンジニアリングプラスチックの他、ポリフェニルサルファイド樹脂やポリエーテルエーテルケトン樹脂などのスーパーエンジニアリングプラスチックが使用できる。熱硬化性樹脂としては、メラミン樹脂やウレタン樹脂が例示される。合成ゴムとしては、シリコーンゴムやＮＢＲ，ＥＰＤＭなどが例示される。
これら合成樹脂には、各種補強材（タルクなど）や、強化繊維が配合されていてもよい。強化繊維としては、ガラス繊維やアラミド繊維、炭素繊維などが例示される。また、合成樹脂には、各種充填材や添加剤、着色剤などを配合してもよい。 As the resin material constituting the filter member 1, various synthetic resins that can be injection-molded can be used. The synthetic resin may be a thermoplastic resin, or a thermosetting resin or a synthetic rubber. As the thermoplastic resin, typically, general-purpose resins such as olefin resins, engineering plastics such as polyamide resins and polyacetal resins, and super engineering plastics such as polyphenyl sulfide resins and polyether ether ketone resins can be used. . Examples of the thermosetting resin include melamine resin and urethane resin. Examples of the synthetic rubber include silicone rubber, NBR, and EPDM.
These synthetic resins may contain various reinforcing materials (such as talc) and reinforcing fibers. Examples of the reinforcing fiber include glass fiber, aramid fiber, and carbon fiber. Moreover, you may mix | blend various fillers, an additive, a coloring agent, etc. with a synthetic resin.

フィルタ部材１は、例えば、理化学機器の配管（特にチューブ等）に接続されて、配管内を流れる液体や気体から、塵埃等の異物を除去するフィルタ部材として使用できる。なお、フィルタ部材１の用途は、これに限定されず、気体や流体の移送や圧力伝達に使用される管路に設けられるフィルタ部材として、あるいは、ろ過装置に取り付けられるフィルタ部材として、広く使用できる。メッシュの素材や、目の大きさ等、および、フィルタ部材が他の部材に接続される部分の具体的形状等は、具体的用途の要請に基づいて適宜定められる。また、上記実施形態のフィルタ部材１は、特に、円筒状メッシュの内側から外側に向かって液体や気体が流れる用途に好ましく使用できる。 The filter member 1 can be used as a filter member that is connected to, for example, piping (especially a tube or the like) of physics and chemistry equipment and removes foreign matters such as dust from liquid or gas flowing in the piping. In addition, the use of the filter member 1 is not limited to this, but can be widely used as a filter member provided in a pipe line used for gas or fluid transfer or pressure transmission, or as a filter member attached to a filtration device. . The material of the mesh, the size of the eyes, etc., the specific shape of the part where the filter member is connected to other members, etc. are appropriately determined based on the request for specific applications. Moreover, the filter member 1 of the said embodiment can be preferably used especially for the use from which a liquid and gas flow toward the outer side from the inner side of a cylindrical mesh.

以下、上記フィルタ部材１の製造方法について説明する。
フィルタ部材１の製造は、射出成形を利用して行われる。まず、樹脂部を形成可能な射出成形金型が準備される。また、円筒状メッシュ２は、公知の方法により、事前に円筒状に形成しておく。その後、射出成形金型に対し、円筒状メッシュを所定の位置に配置した状態で金型を型閉じした後、樹脂を射出して、樹脂部を形成しつつメッシュに一体化することにより、フィルタ部材１が製造される。この射出成形法は、インサート成形法と呼ばれている。 Hereinafter, the manufacturing method of the said filter member 1 is demonstrated.
The manufacture of the filter member 1 is performed using injection molding. First, an injection mold that can form a resin portion is prepared. The cylindrical mesh 2 is formed in a cylindrical shape in advance by a known method. Thereafter, the mold is closed with the cylindrical mesh placed in a predetermined position with respect to the injection mold, and then the resin is injected and integrated into the mesh while forming the resin portion, thereby obtaining a filter. The member 1 is manufactured. This injection molding method is called an insert molding method.

図６は、上記インサート成形工程に用いられる金型の断面模式図である。図を見やすくするため、図６においては、金型そのものの断面に付すべきハッチングを省略している。図７、図８も同様に金型そのもののハッチングを省略している。成形品の取り出しが可能なように、金型３１，３２は、図の上下方向に開閉動作が可能に構成されている。説明の便宜上、両者を上型３１、下型３２と呼ぶ。金型には、適宜スプルーやランナー、ゲートなどが設けられる。また、金型には、適宜ガイドピンや開閉機構、突出しピン、冷却回路などが設けられる。これら金型に付随する部材や構成等の詳細は省略する。 FIG. 6 is a schematic cross-sectional view of a mold used in the insert molding step. In order to make the drawing easier to see, hatching to be attached to the cross section of the mold itself is omitted in FIG. 7 and 8 also omit the hatching of the mold itself. The molds 31 and 32 are configured to be openable and closable in the vertical direction of the drawing so that the molded product can be taken out. For convenience of explanation, both are referred to as an upper die 31 and a lower die 32. The mold is appropriately provided with a sprue, a runner, a gate and the like. The mold is appropriately provided with a guide pin, an opening / closing mechanism, a protruding pin, a cooling circuit, and the like. Details of members and configurations associated with these molds are omitted.

フィルタ部材１は、上型３１と下型３２の開閉方向（図の上下方向）と、円筒状メッシュの中心軸ｍが一致する姿勢で成形される。上型３１には、円柱状の穴が設けられ、こちらがキャビティ型となる。一方、下型３２にはコアピン３５が立設されている。インサート成形に際し、コアピン３５の外周に円筒状メッシュ２が配置され、型閉じ時に、上型の穴に下型のコアピンが入り込んだ状態で、金型のキャビティが完成する。すなわち、フィルタ部材においてメッシュ露出部の外側に対向配置されるキャビティ型の部分３１ａは、メッシュ露出部の内側に配置されるコアピン３５に対し、メッシュの円筒の中心軸ｍに沿う方向に相対移動して型閉じされるよう、射出成形金型は構成されている。 The filter member 1 is formed in a posture in which the opening / closing direction of the upper mold 31 and the lower mold 32 (vertical direction in the drawing) coincides with the central axis m of the cylindrical mesh. The upper mold 31 is provided with a cylindrical hole, which is a cavity mold. On the other hand, a core pin 35 is erected on the lower mold 32. At the time of insert molding, the cylindrical mesh 2 is arranged on the outer periphery of the core pin 35, and when the mold is closed, the cavity of the mold is completed with the lower mold core pin entering the hole of the upper mold. That is, the cavity-type portion 31a disposed opposite to the outside of the mesh exposed portion in the filter member moves relative to the core pin 35 disposed inside the mesh exposed portion in the direction along the center axis m of the mesh cylinder. The injection mold is configured so that the mold is closed.

メッシュが露出すべき部分では、メッシュが、コアピン３５とキャビティ型の部分３１ａの間に挟まれて、メッシュの部分に射出された樹脂が侵入しないようにされる。
円筒状メッシュ２がテーパを有する場合には、メッシュに対向する部分のキャビティ型の部分３１ａや、コアピン３５の外周面には、同じテーパが与えられる。 In the portion where the mesh is to be exposed, the mesh is sandwiched between the core pin 35 and the cavity-type portion 31a so that the injected resin does not enter the mesh portion.
When the cylindrical mesh 2 has a taper, the same taper is given to the cavity-type part 31 a of the part facing the mesh and the outer peripheral surface of the core pin 35.

円筒状メッシュが配置される部分の両端部に、第１樹脂部１１や第２樹脂部１２に対応する部分キャビティが設けられる。樹脂がこれら部分キャビティ内に射出されることにより、キャビティを構成する金型面の形状が樹脂に転写されて、所定の形状の第１樹脂部１１や第２樹脂部１２が形成される。本実施形態では、上型３１に設けられた円柱状の穴の最奥部と、下型３２のコアピン３５の先端面とによって、第１樹脂部を形成する部分キャビティが構成される。また、本実施形態では、上型３１に設けられた円柱状の穴の入り口部分と、下型３２のコアピン３５の根元形状、および、下型３２に掘り込まれた円筒状の穴の形状とによって、第２樹脂部を形成する部分キャビティが構成される。これら部分キャビティの具体的構成は、適宜変更してもよい。 Partial cavities corresponding to the first resin portion 11 and the second resin portion 12 are provided at both ends of the portion where the cylindrical mesh is disposed. By injecting the resin into these partial cavities, the shape of the mold surface constituting the cavity is transferred to the resin, and the first resin portion 11 and the second resin portion 12 having a predetermined shape are formed. In the present embodiment, the innermost part of the cylindrical hole provided in the upper die 31 and the tip surface of the core pin 35 of the lower die 32 constitute a partial cavity that forms the first resin portion. Further, in the present embodiment, the entrance portion of the columnar hole provided in the upper mold 31, the root shape of the core pin 35 of the lower mold 32, and the shape of the cylindrical hole dug into the lower mold 32 Thus, a partial cavity that forms the second resin portion is formed. The specific configuration of these partial cavities may be changed as appropriate.

さらに、射出成形金型において、第１樹脂部の外面形状を規定するキャビティ型の部分には、即ち、上型３１に設けられた円柱状の穴の最奥部には、キャビティの内側に向かって突出するように、複数本の突条３３，３３が周方向に離間して設けられている。突条３３，３３は、フィルタ部材１における溝１３，１３に対応して設けられており、金型における突条３３，３３の部分が、フィルタ部材１における溝１３，１３になる。突条３３，３３の数は、３以上６以下であることが好ましく、突条が周方向にほぼ等間隔に設けられることが好ましい。本実施形態では、４つの突条３３，３３が、周方向にほぼ９０°の角度をなすよう、ほぼ等間隔に設けられている。 Further, in the injection mold, the cavity mold portion that defines the outer surface shape of the first resin portion, that is, the innermost portion of the cylindrical hole provided in the upper mold 31 is directed toward the inside of the cavity. A plurality of protrusions 33, 33 are provided so as to be spaced apart from each other in the circumferential direction. The protrusions 33 and 33 are provided corresponding to the grooves 13 and 13 in the filter member 1, and the portions of the protrusions 33 and 33 in the mold become the grooves 13 and 13 in the filter member 1. The number of the ridges 33, 33 is preferably 3 or more and 6 or less, and the ridges are preferably provided at substantially equal intervals in the circumferential direction. In the present embodiment, the four ridges 33 are provided at substantially equal intervals so as to form an angle of approximately 90 ° in the circumferential direction.

そして、前記突条３３，３３は、金型の型閉じ方向に対し、すなわち、円筒状メッシュの中心軸方向（ｍ方向）に対し、突条３３，３３の突端が傾斜するように設けられている。傾斜の大きさは、２０度〜７０度の範囲にあることが好ましい。また、突条の突端は、本実施形態のように直線状（平面状）であってもよいが、曲線状（曲面状）であってもよい。 The protrusions 33 and 33 are provided such that the protrusions of the protrusions 33 and 33 are inclined with respect to the mold closing direction of the mold, that is, with respect to the central axis direction (m direction) of the cylindrical mesh. Yes. The inclination is preferably in the range of 20 degrees to 70 degrees. Further, the protruding ends of the protrusions may be linear (planar) as in the present embodiment, but may be curved (curved).

上記金型を用いたインサート成形法について、図７、図８を参照して説明する。
まず、図７（ａ）に示すように、上型３１と下型３２を型開きして、下型のコアピン３５に円筒状のメッシュ２をセットする。
その後、図７（ｂ）に示すように、円筒状メッシュの中心軸に沿う方向に上型３１と下型３２を型閉じする。型閉じが完了すると、円筒状メッシュの露出すべき部分が、コアピン３５とキャビティ型の内面３１ａに挟まれるようになると共に、第１樹脂部や第２樹脂部を形成すべき部分キャビティが完成する。 The insert molding method using the mold will be described with reference to FIGS.
First, as shown in FIG. 7A, the upper die 31 and the lower die 32 are opened, and the cylindrical mesh 2 is set on the core pin 35 of the lower die.
Thereafter, as shown in FIG. 7B, the upper mold 31 and the lower mold 32 are closed in a direction along the central axis of the cylindrical mesh. When the mold closing is completed, a portion to be exposed of the cylindrical mesh is sandwiched between the core pin 35 and the inner surface 31a of the cavity mold, and a partial cavity in which the first resin portion and the second resin portion are to be formed is completed. .

金型を型閉じする際には、キャビティ型の穴の最奥部に設けられた突条３３，３３の傾斜した突端が、円筒状メッシュ２の端部に接触するようにして、円筒状メッシュ２の接触部が円筒の半径方向内側に変形した状態となって型閉じが完了するようにする。このようにすることで、図７（ｂ）のＥ−Ｅ断面図のように、メッシュ２の端部が半径方向に波打つように変形した状態で、型閉じされた金型内部に円筒状メッシュ２が配置される。 When the mold is closed, the inclined tips of the ridges 33, 33 provided at the innermost part of the cavity mold hole come into contact with the end of the cylindrical mesh 2 so that the cylindrical mesh 2 The two contact portions are deformed inward in the radial direction of the cylinder so that the mold closing is completed. By doing so, as shown in the EE cross-sectional view of FIG. 7 (b), the cylindrical mesh is placed inside the closed mold while the end of the mesh 2 is deformed so as to wave in the radial direction. 2 is arranged.

かかる状態で樹脂が射出されて樹脂部が形成される（図８）。樹脂の射出と充填は、図７（ｂ）のＥ−Ｅ断面に示した、円筒状メッシュ端部の変形形状がなるべく維持されるように行われる。また、第１樹脂部の部分キャビティと第２樹脂部の部分キャビティがつながっていない場合には、それぞれの部分キャビティに対し射出した樹脂が導かれるようにする。両者が例えば柱状部によりつながっていると、いずれか一方の部分キャビティに樹脂を射出すれば、両方の部分キャビティに順次樹脂が充填されるようになって好ましい。 In this state, resin is injected to form a resin portion (FIG. 8). The injection and filling of the resin are performed so that the deformed shape of the end portion of the cylindrical mesh shown in the EE cross section of FIG. Further, when the partial cavities of the first resin part and the partial cavities of the second resin part are not connected, the injected resin is guided to the respective partial cavities. It is preferable that the two are connected by, for example, a columnar part, so that resin is injected into one of the partial cavities so that both partial cavities are sequentially filled with the resin.

樹脂を射出・充填した状態で、樹脂を固化させる。樹脂の固化は、樹脂の種類に応じて、冷却・加熱・反応等により行われる。樹脂が十分に固化した頃合いを見計らって、金型３１，３２を型開きし、樹脂部（１１，１２）と円筒状メッシュ２とが一体化されたフィルタ部材１を取り出す。 The resin is solidified with the resin injected and filled. The resin is solidified by cooling, heating, reaction, or the like depending on the type of resin. When the resin is sufficiently solidified, the molds 31, 32 are opened, and the filter member 1 in which the resin portions (11, 12) and the cylindrical mesh 2 are integrated is taken out.

以下、上記フィルタ部材１および上記製造方法の作用と効果を説明する。
上記製造方法によりフィルタ部材１をインサート成形するようにすれば、第１樹脂部の外周面と、前記メッシュ露出部の外周面が、ほぼ同じ径で連続した円筒状の面とされたフィルタ部材が得られ、円筒状メッシュの径を大きくすることができる。そして、径が大きくなれば、メッシュの濾過面積を大きくしやすくなる。
また、射出成形金型において、メッシュの露出部分の外側に対向配置されるキャビティ型の部分が、メッシュの露出部分の内側に配置されるコアピンに対し、円筒の中心軸ｍに沿う方向に相対移動して型閉じされるように構成したため、メッシュの露出部にスライド金型を用いる必要がなく、金型の構成が簡単になる。 Hereafter, the effect | action and effect of the said filter member 1 and the said manufacturing method are demonstrated.
If the filter member 1 is insert-molded by the above manufacturing method, a filter member in which the outer peripheral surface of the first resin portion and the outer peripheral surface of the mesh exposed portion are formed into a cylindrical surface continuous with substantially the same diameter is obtained. As a result, the diameter of the cylindrical mesh can be increased. And if a diameter becomes large, it will become easy to enlarge the filtration area of a mesh.
Further, in the injection mold, the cavity mold portion opposed to the outside of the exposed portion of the mesh is relatively moved in the direction along the central axis m of the cylinder with respect to the core pin disposed inside the exposed portion of the mesh. Thus, since the mold is closed, it is not necessary to use a slide mold for the exposed portion of the mesh, and the structure of the mold is simplified.

さらに、上記製造方法によりフィルタ部材１をインサート成形するようにすれば、突端が傾斜した突条３３，３３が、キャビティ内側に突出するように設けられて、型閉じ時に、突条３３，３３の傾斜した突端が、円筒状メッシュ２の端部に接触して、円筒状メッシュ２の接触部が円筒の半径方向内側に変形するようにしたので、樹脂部とメッシュとの一体化も確実なものとなる。 Furthermore, if the filter member 1 is insert-molded by the above-described manufacturing method, the protrusions 33 and 33 whose protrusions are inclined are provided so as to protrude toward the inside of the cavity. Since the inclined tip contacts the end of the cylindrical mesh 2 and the contact portion of the cylindrical mesh 2 is deformed inward in the radial direction of the cylinder, the resin part and the mesh are surely integrated. It becomes.

仮に、突条３３，３３が設けられない場合には、円筒状メッシュ２は、その円筒形状を維持したままで、第１樹脂部に一体化されることになる。このようなフィルタ部材では、円筒状メッシュが、第１樹脂部の表面部にメッシュ端部が貼りつくように一体化されるにとどまるため、例えば、フィルタに内圧がかかったりすると、メッシュの端部がはがれるなどの不具合を生じやすい。 If the protrusions 33 and 33 are not provided, the cylindrical mesh 2 is integrated with the first resin portion while maintaining the cylindrical shape. In such a filter member, since the cylindrical mesh is merely integrated so that the mesh end portion sticks to the surface portion of the first resin portion, for example, when an internal pressure is applied to the filter, the end portion of the mesh Prone to problems such as peeling off.

一方、上記製造方法によりフィルタ部材１を製造すると、円筒状メッシュの中心軸（即ち金型の型閉じ方向）に対し傾斜した突端を有する突条３３，３３が設けられ、金型の型閉じ動作によって、傾斜した突端が円筒状メッシュの端部に接触し、接触部が円筒の半径方向内側、すなわち、型閉じ動作とほぼ直交する方向に変形する。このような突条３３，３３が、複数個、周方向に離間して存在していて、突条の設けられた部分で、離間的に円筒状メッシュ２の端部が、半径方向内側に入り込み、入り込んだ部分で、図４（Ｆ−Ｆ断面）等に示すように、射出された樹脂が、円筒状メッシュ２の端部を外側からも覆うように一体化されて、樹脂部とメッシュとの一体化が確実なものとなる。 On the other hand, when the filter member 1 is manufactured by the above manufacturing method, the protrusions 33 and 33 having protrusions inclined with respect to the central axis of the cylindrical mesh (that is, the mold closing direction) are provided, and the mold closing operation is performed. As a result, the inclined protrusion contacts the end of the cylindrical mesh, and the contact is deformed radially inward of the cylinder, that is, in a direction substantially perpendicular to the mold closing operation. A plurality of such protrusions 33, 33 are present in a circumferentially spaced manner, and the end of the cylindrical mesh 2 enters the radially inner side at a portion where the protrusions are provided. As shown in FIG. 4 (F-F cross section) and the like, the injected resin is integrated so as to cover the end of the cylindrical mesh 2 from the outside, and the resin portion and the mesh Integration is ensured.

さらに、円筒状メッシュがテーパを有している場合には、型締め時に、キャビティ型の面３１ａとコア型３５の外周面とを、円筒の中心軸方向に相対運動させつつ、円筒状メッシュの露出部となるべき部分を、両者の間により緊密に挟み込むことができる。これにより、射出した樹脂が円筒状メッシュの露出部となるべき部分にはみ出してしまう成形不良を抑制することができる。 Further, in the case where the cylindrical mesh has a taper, at the time of clamping, the cavity mesh surface 31a and the outer peripheral surface of the core die 35 are moved relative to each other in the direction of the central axis of the cylinder, The part which should become an exposed part can be pinched | interposed more closely between both. Thereby, the molding defect which the injected resin will protrude into the part which should become the exposed part of a cylindrical mesh can be suppressed.

また、上記実施形態のように、金型の第１樹脂部の形状を規定する部分に前記突条が設けられ、突条の突端との接触により、前記円筒状メッシュの接触部が円筒の半径方向内側に変形して、円筒状メッシュの端部が半径方向に波打つように変形した状態で型閉じが完了するようにすれば、円筒状メッシュの端部全体を半径方向内側に変形させるような場合に比べ、円筒状メッシュの端部を変形させやすく、円筒状メッシュに無理な変形を強いることがない。そのため、第１樹脂部１１の近くのメッシュの露出部にしわなどが発生しにくくなって、フィルタ部材の品質が向上する。 Further, as in the above-described embodiment, the protrusion is provided in a portion that defines the shape of the first resin portion of the mold, and the contact portion of the cylindrical mesh is brought into contact with the protrusion end of the protrusion so that the radius of the cylinder is increased. If the mold closing is completed while the end of the cylindrical mesh is deformed so that the end of the cylindrical mesh undulates in the radial direction, the entire end of the cylindrical mesh may be deformed radially inward. Compared to the case, the end of the cylindrical mesh is easily deformed, and the cylindrical mesh is not forced to be deformed. Therefore, wrinkles and the like are less likely to occur in the exposed portion of the mesh near the first resin portion 11, and the quality of the filter member is improved.

また、さらに、上記実施形態のように、突条の数が３以上６以下であり、突条が周方向にほぼ等間隔に設けられるようにした場合には、円筒状メッシュの端部が半径方向に波打つように変形しやすくなり、円筒状メッシュに無理な変形が生じにくくなる。そのため、メッシュの露出部にしわなどが発生しにくくなって、フィルタ部材の品質が向上する。 Furthermore, as in the above embodiment, when the number of ridges is 3 or more and 6 or less and the ridges are provided at substantially equal intervals in the circumferential direction, the end of the cylindrical mesh has a radius. It becomes easy to be deformed so as to wave in the direction, and it becomes difficult to cause excessive deformation in the cylindrical mesh. Therefore, wrinkles and the like are less likely to occur in the exposed portion of the mesh, and the quality of the filter member is improved.

発明は、上記実施形態に限定されるものではなく、種々の改変をして実施することができる。以下に発明の他の実施形態や変形例について説明するが、以下の説明においては、上記実施形態と異なる部分を中心に説明し、同様である部分についてはその詳細な説明を省略する。また、これら実施形態は、その一部を互いに組み合わせて、あるいは、その一部を置き換えて実施できる。 The invention is not limited to the embodiment described above, and can be implemented with various modifications. Other embodiments and modifications of the invention will be described below, but in the following description, different parts from the above embodiment will be mainly described, and detailed description of the same parts will be omitted. Moreover, these embodiments can be implemented by combining some of them or replacing some of them.

上記実施形態では、第１樹脂部１１を形成するキャビティの側に、傾斜した突端を有する突条３３を複数個設けた実施形態について説明したが、突条は、第２樹脂部１２を形成するキャビティの側に設けてもよい。また、必要があれば、突条は、第１樹脂部を形成するキャビティと、第２樹脂部１２を形成するキャビティの両方に設けてもよい。 Although the said embodiment demonstrated embodiment which provided multiple protrusions 33 which have the inclined protrusion on the side of the cavity which forms the 1st resin part 11, a protrusion forms the 2nd resin part 12. FIG. You may provide in the cavity side. Further, if necessary, the protrusions may be provided in both the cavity forming the first resin portion and the cavity forming the second resin portion 12.

第２樹脂部１２を形成するキャビティの側に突条を設ける場合には、突条は、コアピンからキャビティの内側に突出するように設けられ、突条の突端が円筒状メッシュの中心軸ｍに対して傾斜して設けられる。そして、型閉じ時に、突条の傾斜突端と円筒状メッシュの端部とが接触することで、円筒状メッシュの接触部が円筒の半径方向外側に変形した状態となって型閉じが完了するように構成すればよい。
なお、ここで傾斜して設けられるべき突条の突端とは、金型を型閉じする際に、円筒状メッシュが接近し接触する部分の突端をいい、円筒状メッシュと接触しない部分は、傾斜している必要はない。この点は、第１樹脂部の側に設けられる突条においても同様である。 When providing a protrusion on the side of the cavity forming the second resin portion 12, the protrusion is provided so as to protrude from the core pin to the inside of the cavity, and the protrusion end of the protrusion is on the central axis m of the cylindrical mesh. It is provided with an inclination. When the mold is closed, the inclined protrusion of the ridge and the end of the cylindrical mesh come into contact with each other, so that the contact of the cylindrical mesh is deformed outward in the radial direction of the cylinder so that the mold closing is completed. What is necessary is just to comprise.
Here, the protruding end of the ridge to be provided inclining means the protruding end of the portion where the cylindrical mesh approaches and contacts when the mold is closed, and the portion not in contact with the cylindrical mesh is inclined. You don't have to. This also applies to the protrusion provided on the first resin portion side.

第２樹脂部１２を形成するキャビティの側に突条を設ける場合でも、同様に、金型の構成も簡単になり、樹脂部とメッシュとの一体化も確実なものとなる。また、フィルタ部材のメッシュが外から内側に向かう方向の圧力にさらされる場合にも、第２樹脂部側のメッシュ端部と樹脂部の一体化がより確実なものとなる。 Even when the protrusions are provided on the cavity side where the second resin portion 12 is formed, the structure of the mold is also simplified, and the integration of the resin portion and the mesh is ensured. In addition, even when the mesh of the filter member is exposed to pressure in a direction from the outside to the inside, the integration of the mesh end portion on the second resin portion side and the resin portion becomes more reliable.

上記製造方法によれば、フィルタ部材を効率的に製造できて、産業上の利用価値が高い。 According to the said manufacturing method, a filter member can be manufactured efficiently and industrial utility value is high.

１ フィルタ部材
１１ 第１樹脂部
１２ 第２樹脂部
１３ 溝
２ 円筒状メッシュ
３１ 上型
３２ 下型
３３ 突条
３５ コアピン DESCRIPTION OF SYMBOLS 1 Filter member 11 1st resin part 12 2nd resin part 13 Groove 2 Cylindrical mesh 31 Upper mold | type 32 Lower mold | type 33 Projection 35 Core pin

Claims (4)

円筒状に形成されたメッシュに合成樹脂製の樹脂部が一体化されたフィルタ部材を、射出成形を利用して製造する方法であって、
前記フィルタ部材では、円筒状メッシュの両端部に、リング状、円筒状もしくは円板状の第１樹脂部及び第２樹脂部がそれぞれ一体化されており、第１樹脂部と第２樹脂部の間でメッシュの一部が露出していて、第１樹脂部の外周面と、前記メッシュ露出部の外周面が、ほぼ同じ径で連続した円筒状の面とされており、
前記射出成形は、
前記樹脂部を形成可能な射出成形金型に対し、円筒状メッシュを所定の位置に配置した状態で金型を型閉じした後、樹脂を射出して、樹脂部を形成しつつメッシュに一体化するよう行われ、
前記射出成形金型は、キャビティ型とコアピンを有すると共に、
前記メッシュ露出部の外側に対向配置されるキャビティ型の部分が、前記メッシュ露出部の内側に配置されるコアピンに対し、円筒の中心軸に沿う方向に相対移動して型閉じされるものであり、
さらに、前記射出成形金型において、第１樹脂部と第２樹脂部の少なくとも一方の形状を規定する部分には、金型のキャビティの内側に向かって突出するように、複数本の突条が周方向に離間して設けられており、
かつ、前記突条は、金型の型閉じ方向に対し突条の突端が傾斜した形状とされていて、
金型を型閉じする際に、前記突条の傾斜した突端が、円筒状メッシュの端部に接触して、
円筒状メッシュの接触部が円筒の半径方向に変形した状態となって型閉じが完了し、
かかる状態で樹脂が射出されて樹脂部が形成される、
フィルタ部材の製造方法。 A method of manufacturing a filter member in which a synthetic resin resin part is integrated with a mesh formed in a cylindrical shape using injection molding,
In the filter member, the first resin portion and the second resin portion in a ring shape, a cylindrical shape, or a disk shape are respectively integrated at both ends of the cylindrical mesh, and the first resin portion and the second resin portion are integrated. A part of the mesh is exposed, and the outer peripheral surface of the first resin portion and the outer peripheral surface of the mesh exposed portion are continuous cylindrical surfaces having substantially the same diameter,
The injection molding is
For the injection mold that can form the resin part, after closing the mold with the cylindrical mesh placed in place, the resin is injected to form the resin part and integrated with the mesh Done to
The injection mold has a cavity mold and a core pin,
The cavity mold portion disposed opposite to the outside of the mesh exposed portion is moved relative to the core pin disposed inside the mesh exposed portion in the direction along the center axis of the cylinder, and the mold is closed. ,
Further, in the injection mold, a plurality of protrusions are formed on a portion defining at least one of the first resin portion and the second resin portion so as to protrude toward the inside of the mold cavity. Are spaced apart in the circumferential direction,
And the said protrusion is made into the shape where the protrusion of the protrusion inclined with respect to the mold closing direction of a metal mold,
When closing the mold, the inclined tip of the protrusion contacts the end of the cylindrical mesh,
The mold mesh closing is completed when the contact portion of the cylindrical mesh is deformed in the radial direction of the cylinder,
In such a state, resin is injected to form a resin part.
Manufacturing method of filter member. 前記円筒状メッシュがテーパを有している
請求項１に記載のフィルタ部材の製造方法。 The method for manufacturing a filter member according to claim 1, wherein the cylindrical mesh has a taper. 金型の第１樹脂部の形状を規定する部分に前記突条が設けられ、突条の突端との接触により、前記円筒状メッシュの接触部が円筒の半径方向内側に変形して、
円筒状メッシュの端部が半径方向に波打つように変形した状態で型閉じが完了する
請求項１または請求項２に記載のフィルタ部材の製造方法。 The protrusion is provided in a portion defining the shape of the first resin portion of the mold, and the contact portion of the cylindrical mesh is deformed inward in the radial direction of the cylinder by contact with the protrusion end of the protrusion,
The method for manufacturing a filter member according to claim 1 or 2, wherein the mold closing is completed in a state in which the end of the cylindrical mesh is deformed so as to wave in the radial direction. 突条の数が３以上６以下であり、突条が周方向にほぼ等間隔に設けられた
請求項１もしくは請求項３のいずれかに記載のフィルタ部材の製造方法。 The method for manufacturing a filter member according to claim 1 or 3, wherein the number of ridges is 3 or more and 6 or less, and the ridges are provided at substantially equal intervals in the circumferential direction.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115135480A (en) * 2020-02-25 2022-09-30 株式会社利富高 Insert molding filter and method for manufacturing insert molding filter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660616A (en) * 1979-10-24 1981-05-25 Nifco Inc Production of strainer body
JPH1137010A (en) * 1997-07-17 1999-02-09 Marusan:Kk Fuel filter and method for forming it
JP2002346316A (en) * 2001-05-25 2002-12-03 Nippo Seisakusho:Kk Method for manufacturing filter integrally equipped with plastic frame
US20060249443A1 (en) * 2002-12-16 2006-11-09 Chilton Donald T End cap and gasket assemblies for filter elements
JP2011148312A (en) * 2011-02-09 2011-08-04 Nifco Inc Mesh, filter using the same, and method for manufacturing the filter
JP2016064331A (en) * 2014-09-24 2016-04-28 株式会社エンプラス Cylindrical mesh filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660616A (en) * 1979-10-24 1981-05-25 Nifco Inc Production of strainer body
JPH1137010A (en) * 1997-07-17 1999-02-09 Marusan:Kk Fuel filter and method for forming it
JP2002346316A (en) * 2001-05-25 2002-12-03 Nippo Seisakusho:Kk Method for manufacturing filter integrally equipped with plastic frame
US20060249443A1 (en) * 2002-12-16 2006-11-09 Chilton Donald T End cap and gasket assemblies for filter elements
JP2011148312A (en) * 2011-02-09 2011-08-04 Nifco Inc Mesh, filter using the same, and method for manufacturing the filter
JP2016064331A (en) * 2014-09-24 2016-04-28 株式会社エンプラス Cylindrical mesh filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115135480A (en) * 2020-02-25 2022-09-30 株式会社利富高 Insert molding filter and method for manufacturing insert molding filter

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