JP4819416B2 - Method for producing mesh filter and injection mold for producing mesh filter - Google Patents

Method for producing mesh filter and injection mold for producing mesh filter Download PDF

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JP4819416B2
JP4819416B2 JP2005186265A JP2005186265A JP4819416B2 JP 4819416 B2 JP4819416 B2 JP 4819416B2 JP 2005186265 A JP2005186265 A JP 2005186265A JP 2005186265 A JP2005186265 A JP 2005186265A JP 4819416 B2 JP4819416 B2 JP 4819416B2
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mesh
mold
cavity
mesh member
resin
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JP2007001232A (en
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賢治 米澤
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Piolax Inc
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Description

本発明は、例えばオイル等の液体が流れる通路内に装着されて、異物の混入等を防止するメッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型に関する。   The present invention relates to a method for manufacturing a mesh filter that is mounted in a passage through which a liquid such as oil flows, for example, and prevents contamination and the like, and an injection mold for manufacturing a mesh filter.

自動車の潤滑装置等の配管等には、異物の混入を防止したり、塵埃等をろ過したりする、メッシュフィルタが装着されている。このようなメッシュフィルタは、樹脂製の枠部材にメッシュ部材が張設された形状をなしている。   A mesh filter that prevents foreign matter from entering or filters dust or the like is attached to piping or the like of an automobile lubrication device. Such a mesh filter has a shape in which a mesh member is stretched around a resin frame member.

上記メッシュフィルタ10は、図8に示すように、下型40及び上型50よりなる金型30の間に、メッシュ部材11を挟持させた状態で、キャビティ41、51内に樹脂を射出して、メッシュ部材11の周縁を枠部材12に埋設させて製造される。   As shown in FIG. 8, the mesh filter 10 injects resin into the cavities 41 and 51 with the mesh member 11 sandwiched between the mold 30 including the lower mold 40 and the upper mold 50. The periphery of the mesh member 11 is manufactured by being embedded in the frame member 12.

しかしながら、この製造工程においては、次のような問題が生じていた。すなわち、メッシュ部材11が射出された樹脂に押圧されて、所定の配置箇所から位置ずれしたり(図7中想像線参照)、メッシュ部材11の周縁が、樹脂Rに押圧されて折れ曲がって、キャビティ41の内面に張り付いたりすることがあった(図8参照)。   However, this manufacturing process has the following problems. That is, the mesh member 11 is pressed by the injected resin and is displaced from a predetermined arrangement position (see an imaginary line in FIG. 7), or the periphery of the mesh member 11 is pressed by the resin R and bent. 41 may stick to the inner surface of 41 (see FIG. 8).

図7のように、メッシュ部材が位置ずれすると、枠部材12からはみ出して見栄えが悪くなり、かつ、枠部材12の所定箇所でメッシュ部材11を保持できなくなるので、メッシュ部材11をしっかりと張設できず強度面で問題となる。   As shown in FIG. 7, when the mesh member is displaced, the mesh member 11 protrudes from the frame member 12 and looks bad, and the mesh member 11 cannot be held at a predetermined position of the frame member 12. It is not possible to cause a problem in terms of strength.

また、図8のように、メッシュ部材11の周縁が折れ曲がった場合、メッシュ部材11が露出して見栄えが悪くなるばかりか、これを潤滑装置等に適用して、オイル等の油圧によりメッシュ部材が繰り返し押圧されるような状態に曝されると、屈曲した角部C(図8参照)に応力が集中して、該角部Cからメッシュ部材が破損してしまう可能性がある。   Further, as shown in FIG. 8, when the peripheral edge of the mesh member 11 is bent, the mesh member 11 is exposed and the appearance is deteriorated. When exposed to a state of being repeatedly pressed, stress concentrates on the bent corner C (see FIG. 8), and the mesh member may be damaged from the corner C.

下記特許文献1には、一対の型枠の間にメッシュ部材を挟持させ、メッシュ部材の外周縁よりも外側上方に配置された射出ノズルから、キャビティ内に樹脂を射出して枠部材を成形する製造方法が開示されており、射出時に樹脂が直接メッシュ部材に接触しないようにして、メッシュ部材の折れ曲がりを防止している。   In Patent Document 1 below, a mesh member is sandwiched between a pair of molds, and a frame member is formed by injecting resin into a cavity from an injection nozzle disposed on the outer side of the outer peripheral edge of the mesh member. A manufacturing method is disclosed, and bending of the mesh member is prevented by preventing the resin from directly contacting the mesh member at the time of injection.

また、下記特許文献2には、一度の射出でメッシュフィルタを複数成形可能な、いわゆる多数個込めの型枠であって、キャビティと、該キャビティの外周に沿って形成された周溝とを有したものが開示されている。この型枠は、複数のメッシュフィルタを成形するために、型枠同士を突き当てさせる合せ面が多くなっている。そのため、メッシュ部材をしっかりと張設した状態で挟持することができるので、メッシュ部材の位置ずれや、その周縁の折れ曲がりを抑制している。
特開2004−202983号公報 特許第2749127号公報
Patent Document 2 listed below is a so-called multi-walled mold that can mold a plurality of mesh filters by one injection, and has a cavity and a circumferential groove formed along the outer periphery of the cavity. Has been disclosed. In order to form a plurality of mesh filters, this mold has many mating surfaces on which the molds abut each other. Therefore, since the mesh member can be clamped in a tightly stretched state, displacement of the mesh member and bending of the peripheral edge thereof are suppressed.
JP 2004-202983 A Japanese Patent No. 2749127

上記特許文献1の場合、射出時に樹脂が直接メッシュ部材に接触しないようにしているが、樹脂の流れを正確に制御することは困難であるので、メッシュ部材の位置ずれや、折れ曲がりの可能性が捨てきれない。また、上記特許文献2の場合、抜型後、メッシュ部材を周溝ごと切断して、一つのメッシュフィルタを得るようにしているが、メッシュ部材の端縁が露出してしまうことは否めず、見栄えに問題がある。   In the case of the above-mentioned Patent Document 1, resin is prevented from directly contacting the mesh member at the time of injection. However, since it is difficult to accurately control the flow of the resin, there is a possibility that the mesh member is misaligned or bent. I can't throw it away. In the case of the above-mentioned Patent Document 2, the mesh member is cut along with the circumferential groove after the mold is cut out to obtain one mesh filter. However, the edge of the mesh member cannot be denied but looks nice. There is a problem.

したがって、本発明の目的は、射出成形時の樹脂の射出圧による位置ずれや変形等を防止して、メッシュ部材の端縁が枠部材から露出することがない、メッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型を提供することにある。   Accordingly, an object of the present invention is to prevent a positional shift or deformation due to an injection pressure of a resin during injection molding, so that the edge of the mesh member is not exposed from the frame member, and the mesh filter manufacturing method and the mesh filter It is to provide an injection mold for production.

上記目的を達成するため、本発明の第1は、メッシュ部材を、枠状のキャビティと、該キャビティの内側に設けられた支持台座とを有する射出成形金型内に配置し、メッシュ部材の中央部を前記支持台座の合わせ面で保持しつつ、メッシュ部材の周縁に形成された前記キャビティに樹脂を射出して、メッシュ部材の周縁が樹脂製の枠部材で保持されたメッシュフィルタを製造する方法において、前記キャビティの内部に入り込んで、前記金型を閉じたときに、前記メッシュ部材の前記キャビティ内に配置される端縁部を部分的に挟持するピン状又はリブ状をなし、前記支持台座の合わせ面と同じ高さの平坦な合わせ面を有する突起を前記金型の内面に形成し、前記突起によって前記メッシュ部材の端縁部を部分的に挟持しながら、前記キャビティ内に前記各合わせ面と平行でかつ異なる高さに設けられたランナーを通して樹脂を射出することを特徴とするメッシュフィルタの製造方法を提供するものである。 In order to achieve the above object, according to a first aspect of the present invention, a mesh member is disposed in an injection mold having a frame-like cavity and a support pedestal provided inside the cavity, and the center of the mesh member is arranged. while holding the parts in the mating surface of the support base, and injecting a resin into the cavity formed in the periphery of the mesh member, a method in which the peripheral edge of the mesh member to produce a mesh filter which is held by a frame member made of resin In this case, when the metal mold enters the cavity and closes the mold, the mesh member has a pin shape or a rib shape that partially sandwiches an edge portion disposed in the cavity, and the support base a protrusion having a flat mating surface having the same height as the mating surface of the formed on the inner surface of the mold, while partially sandwich the edge portion of the mesh member by said projections, said cavity Wherein in I is to provide a method for manufacturing a mesh filter, characterized by injecting the resin through the runners provided in a and different heights parallel with the mating surfaces.

記発明によれば、金型を閉じたときに、メッシュ部材のキャビティ内に配置される端縁部を、ピン状又はリブ状の突起によって部分的に挟持しながら、キャビティ内に樹脂を射出することにより、メッシュ部材が位置ずれしたり、メッシュ部材の端縁部が樹脂の射出圧によって屈曲して、成形される枠部材の表面に浮き出たり、はみ出したりすることが防止される。このため、メッシュ部材の周縁が樹脂製の枠部材に埋設されて、しっかりと保持されたメッシュフィルタを製造することができる。また、上記突起で挟持された部分は、メッシュ部材が露出した部分となるので、フィルタのろ過面積を増大させることができる。
本発明の第2は、前記第1の発明において、前記メッシュ部材の端縁部であって、前記メッシュ部材の角部を、前記突起で挟持しながら前記キャビティ内に樹脂を射出するメッシュフィルタの製造方法を提供するものである。
According to the above Symbol onset bright, when the mold is closed, an edge portion disposed in the cavity of the mesh member, while partially clamped by the pin-like or rib-like projections, a resin into the cavity By injecting, it is possible to prevent the mesh member from being displaced, and the edge of the mesh member from being bent by the injection pressure of the resin, so that it can be lifted or protruded from the surface of the frame member to be molded. For this reason, the mesh filter by which the periphery of the mesh member was embed | buried under resin-made frame members, and was hold | maintained firmly can be manufactured. Moreover, since the part pinched by the said protrusion turns into a part which the mesh member exposed, the filtration area of a filter can be increased.
A second aspect of the present invention is the mesh filter according to the first aspect, wherein the mesh member is an edge of the mesh member and injects a resin into the cavity while sandwiching a corner portion of the mesh member with the protrusion. A manufacturing method is provided.

本発明の第3は、メッシュ部材の周縁を樹脂製の枠部材で保持したメッシュフィルタを製造するための射出成形金型において、前記樹脂製の枠部材を成形する枠状のキャビティと、前記メッシュ部材の中央部を合わせ面によって挟持すると共に、前記メッシュ部材の周縁部を前記キャビティ内に延出させて支持する支持台座と、前記金型の内面から前記キャビティの内部に入り込むようにピン状又はリブ状をなし、前記支持台座の合わせ面と同じ高さの平坦な合わせ面を有していて、有前記金型を閉じたときに、前記メッシュ部材の前記キャビティ内に配置される端縁部を部分的に挟持する突起とを備え、前記金型の一方の支持台座は分割面よりも隆起し、前記金型の他方の支持台座は分割面よりも陥没していて、前記金型の分割面には前記キャビティに連通するランナーが設けられていることを特徴とするメッシュフィルタ製造用射出成形金型を提供するものである。 According to a third aspect of the present invention, in an injection mold for producing a mesh filter in which the periphery of a mesh member is held by a resin frame member, a frame-shaped cavity for molding the resin frame member, and the mesh while sandwiched by the central portion of the mating surfaces of the members, and a support base for supporting the peripheral portion of the mesh member by extending into the cavity, enters from the inner surface of the mold the interior of the cavity write unnecessarily pin-like or An edge portion which is formed in a rib shape and has a flat mating surface having the same height as the mating surface of the support pedestal and which is disposed in the cavity of the mesh member when the die is closed partially provided with a clamping Soo that collision caused Prefecture, one of the support base of the mold is raised than dividing plane, the other support pedestal of the mold is not depressed than dividing plane, the mold The split surface of It is intended to provide a mesh filter manufacturing injection mold, characterized in that runner communicating is provided Yabiti.

記発明によれば、金型を閉じたときに、メッシュ部材のキャビティ内に配置される端縁部が、ピン状又はリブ状の突起によって部分的に挟持されるので、その状態で、キャビティ内に樹脂を射出することにより、前述したように、メッシュ部材の周縁が樹脂製の枠部材に埋設されて、しっかりと保持されたメッシュフィルタを製造することができる。また、突起で挟持した部分はメッシュが露出した部分となるので、フィルタのろ過面積を増大させることができる。 According to the above Symbol onset bright, when the mold is closed, the edge portion disposed in the cavity of the mesh member, because it is partially clamped by the pin-like or rib-like projections, in that state, By injecting the resin into the cavity, as described above, it is possible to manufacture a mesh filter in which the periphery of the mesh member is embedded in the resin frame member and firmly held. Moreover, since the part pinched by the protrusion is the part where the mesh is exposed, the filtration area of the filter can be increased.

また、金型を閉じてメッシュ部材を挟持したとき、メッシュ部材の各部が同じ高さ位置で挟持されるため、メッシュ部材が変形したり、引っ張られたりしたりすることがなく、メッシュ部材の損傷等を防止できる。 In addition, when the mesh member is clamped with the mold closed, the mesh member is not deformed or pulled because each part of the mesh member is clamped at the same height position. Etc. can be prevented.

本発明のメッシュフィルタの製造方法によれば、金型を閉じるとメッシュ部材の端縁部が、ピン状又はリブ状の突起によって部分的に挟持された状態で、キャビティ内に樹脂が射出されるので、メッシュ部材が位置ずれしたり、その端縁部が樹脂の射出圧によって屈曲したりすることを防止して、樹脂製の枠部材にメッシュ部材の周縁がしっかりと保持されたメッシュフィルタを製造できる。   According to the method for manufacturing a mesh filter of the present invention, when the mold is closed, the resin is injected into the cavity in a state where the edge of the mesh member is partially sandwiched by the pin-shaped or rib-shaped protrusions. Therefore, it is possible to prevent the mesh member from being displaced and the edge of the mesh member from being bent by the injection pressure of the resin, and manufacture a mesh filter in which the periphery of the mesh member is firmly held by the resin frame member. it can.

また、本発明のメッシュフィルタ製造用射出成形金型によれば、上述のメッシュフィルタの製造方法と同様に、メッシュ部材の端縁部が突起により部分的に挟持された状態で、キャビティ内に樹脂が射出されるので、樹脂製の枠部材にメッシュ部材の周縁がしっかりと保持されたメッシュフィルタを製造できる。   Further, according to the injection mold for producing a mesh filter of the present invention, as in the above-described method for producing a mesh filter, the resin is contained in the cavity with the edge of the mesh member partially sandwiched by the protrusions. Is injected, a mesh filter in which the periphery of the mesh member is firmly held by the resin frame member can be manufactured.

以下、図面を参照して、本発明のメッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型について説明する。   Hereinafter, a method for producing a mesh filter and an injection mold for producing a mesh filter according to the present invention will be described with reference to the drawings.

本発明のメッシュフィルタの製造方法は、例えば、図1に示すようなメッシュフィルタ10を製造するのに適用できる。   The method for manufacturing a mesh filter of the present invention can be applied, for example, to manufacture a mesh filter 10 as shown in FIG.

このメッシュフィルタ10は、金属線材等を編み組みして形成されたメッシュ部材11と、このメッシュ部材11の周縁を保持する樹脂製の枠部材12とで構成される。メッシュ部材11は、枠部材12の高さ方向ほぼ中央にて保持されている。また、枠部材12の上端面及び下端面からは、枠部材12の幅よりも小さい径で通孔13が形成され、この通孔13内で前記メッシュ部材11がそれぞれ露出している。したがって、枠部材12の内側で張設されたメッシュ部材11の中央部分のみならず、通孔13が設けられてメッシュ部材11が露出した箇所においても、オイル等の流体を通過可能となっている。   The mesh filter 10 includes a mesh member 11 formed by braiding a metal wire or the like, and a resin frame member 12 that holds the periphery of the mesh member 11. The mesh member 11 is held approximately at the center of the frame member 12 in the height direction. Further, through holes 13 having a diameter smaller than the width of the frame member 12 are formed from the upper end surface and the lower end surface of the frame member 12, and the mesh members 11 are exposed in the through holes 13. Therefore, not only the central part of the mesh member 11 stretched inside the frame member 12 but also a fluid such as oil can pass through a portion where the mesh member 11 is exposed by providing the through hole 13. .

そして、上記メッシュフィルタ10は、図2及び3に示すメッシュフィルタ製造用射出成形金型30(以下、金型30という)にて製造される。   The mesh filter 10 is manufactured by a mesh filter manufacturing injection mold 30 (hereinafter referred to as a mold 30) shown in FIGS.

すなわち、この金型30は、下型40と、この下型40上に配置される上型50とで構成され、これらの下型40及び上型50が一体となって、メッシュフィルタ10を製造するようになっている。   That is, the mold 30 includes a lower mold 40 and an upper mold 50 disposed on the lower mold 40. The lower mold 40 and the upper mold 50 are integrated to manufacture the mesh filter 10. It is supposed to be.

下型40及び上型50の内面には、枠部材12を成形するためのキャビティ41、51が所定深さでそれぞれ形成されている。このキャビティ41、51を境にして、その外側部分は、他方の型に相互に当接する分割面42、52が形成されている。また、下型40のキャビティ41の内側部分は、分割面42よりもやや隆起した支持台座43が設けられ、上型50のキャビティ51の内側部分には、分割面52よりやや陥没した支持台座53が設けられている。   Cavities 41 and 51 for forming the frame member 12 are formed on the inner surfaces of the lower mold 40 and the upper mold 50, respectively, with a predetermined depth. With the cavities 41 and 51 as a boundary, the outer portions are formed with split surfaces 42 and 52 that abut against the other mold. Further, a support pedestal 43 that is slightly raised from the dividing surface 42 is provided in the inner part of the cavity 41 of the lower mold 40, and a support pedestal 53 that is slightly depressed from the dividing surface 52 is provided in the inner part of the cavity 51 of the upper mold 50. Is provided.

各支持台座43、53の端面である合わせ面44、54は、メッシュ部材11をセット時に、メッシュ部材11の中央部を支持し、金型30が閉じたときに、他方の型の合わせ面と相俟って、メッシュ部材11の中央部を挟持する部分となる。なお、合わせ面44、54の、各型40、50の端面からの高さをD1とする。   The mating surfaces 44 and 54, which are the end surfaces of the respective support bases 43 and 53, support the center of the mesh member 11 when the mesh member 11 is set, and the mating surface of the other die when the mold 30 is closed. Together, it becomes a portion that sandwiches the central portion of the mesh member 11. The height of the mating surfaces 44 and 54 from the end surfaces of the molds 40 and 50 is D1.

各キャビティ41、51の内部には、その底面に対して垂直に、ピン状の突起45、55が突設されている。この突起45、55は、図2を併せて参照すると、キャビティ41、51の形状に沿って、所定間隔をおいて複数設けられている。そして、この突起45、55の上端面である合わせ面46、56により、中央部が支持されたメッシュ部材11の端縁部を、支持するようになっている。また、突起45、55の個数は、製造するメッシュフィルタ10の大きさ等により適宜選択できるが、メッシュ部材11を効果的に支持するという観点から、メッシュ部材11の角部に設けられていることが好ましい。   Pin-shaped protrusions 45 and 55 project from the cavities 41 and 51 perpendicularly to the bottom surface. Referring to FIG. 2 as well, a plurality of the protrusions 45 and 55 are provided at predetermined intervals along the shape of the cavities 41 and 51. And the edge part of the mesh member 11 by which the center part was supported is supported by the mating surfaces 46 and 56 which are the upper end surfaces of this processus | protrusion 45,55. The number of the protrusions 45 and 55 can be selected as appropriate depending on the size of the mesh filter 10 to be manufactured. Is preferred.

更に、突起45、55の合わせ面46、56は、各型40、50の端面から高さD2で突設されており、この高さD2は、合わせ面44、54の高さD1と同じであることが好ましい。こうすると、金型30を閉じてメッシュ部材11を挟持したとき、メッシュ部材11の各部が同じ高さ位置で挟持されるため、メッシュ部材11が変形したり、引っ張られたりしたりすることがなく、メッシュ部材11の損傷等を防止できる。   Further, the mating surfaces 46 and 56 of the protrusions 45 and 55 are projected from the end surfaces of the respective molds 40 and 50 at a height D2, and this height D2 is the same as the height D1 of the mating surfaces 44 and 54. Preferably there is. In this way, when the mold member 30 is closed and the mesh member 11 is clamped, each part of the mesh member 11 is clamped at the same height position, so that the mesh member 11 is not deformed or pulled. Further, damage to the mesh member 11 can be prevented.

また、図2に示すように、上型50のキャビティ51の外周には、キャビティ51に連通すると共に、キャビティ51に対してほぼ直角方向にランナー57が延出されている。更に、図3に示すように、ランナー57の終端からは、ランナー57に連通するゲート58が、垂直方向に立設されている。このゲート58は外方に開口しており、図示しない射出成形機の射出ノズル60が挿入可能となっている。   As shown in FIG. 2, the outer periphery of the cavity 51 of the upper mold 50 communicates with the cavity 51, and a runner 57 extends in a direction substantially perpendicular to the cavity 51. Further, as shown in FIG. 3, a gate 58 communicating with the runner 57 is erected in the vertical direction from the end of the runner 57. The gate 58 opens outward, and an injection nozzle 60 of an injection molding machine (not shown) can be inserted.

このような下型40及び/又は上型50は、図示しないエアシリンダ等で上下方向に移動可能とされており、金型30を開閉可能となっている。   Such a lower mold 40 and / or an upper mold 50 can be moved in the vertical direction by an air cylinder (not shown) or the like, so that the mold 30 can be opened and closed.

次に、上述した金型30を用いて、メッシュフィルタ10を製造する工程について説明する。   Next, the process for manufacturing the mesh filter 10 using the mold 30 described above will be described.

まず、下型40上にメッシュ部材11を配置する。このとき、メッシュ部材11の中央部の下面は、支持台座43上端の合わせ面44に支持され、周縁部がキャビティ41内に入り込むと共に、端縁部の下面が、突起45上端の合わせ面46によって支持される。   First, the mesh member 11 is disposed on the lower mold 40. At this time, the lower surface of the central portion of the mesh member 11 is supported by the mating surface 44 at the upper end of the support pedestal 43, the peripheral portion enters the cavity 41, and the lower surface of the edge portion is supported by the mating surface 46 at the upper end of the protrusion 45. Supported.

この状態で、図示しないエアシリンダ等により上型50を下降させる。すると、図3に示すように、支持台座53の合わせ面54及び突起55の合わせ面56により、メッシュ部材11の中央部及び端縁部の上面が支持されて、下型40により支持されたメッシュ部材11の中央部が挟持されると共に、その端縁部が部分的に挟持された状態で、金型30が閉じられることとなる。   In this state, the upper die 50 is lowered by an air cylinder (not shown) or the like. Then, as shown in FIG. 3, the mesh surface supported by the lower mold 40 is supported by the mating surface 54 of the support pedestal 53 and the mating surface 56 of the protrusion 55 so that the upper surface of the center portion and the edge portion of the mesh member 11 is supported. The mold 30 is closed in a state where the central portion of the member 11 is clamped and the edge portion is partially clamped.

そして、図示しない射出成形機の射出ノズル60が、ゲート58に挿入されて、樹脂が射出される。射出された樹脂は、ゲート58及びランナー57を通って、キャビティ41、51内に流し込まれて、枠部材12がメッシュ部材11の端縁部を埋設させた状態で成形されて、メッシュフィルタ10が製造される。   Then, an injection nozzle 60 of an injection molding machine (not shown) is inserted into the gate 58, and resin is injected. The injected resin passes through the gate 58 and the runner 57 and flows into the cavities 41 and 51, and the frame member 12 is molded with the edge of the mesh member 11 embedded therein, and the mesh filter 10 is formed. Manufactured.

この際の金型30を閉じた状態では、メッシュ部材11のキャビティ41、51内に配置された端縁部が、ピン状の突起45、55によって部分的に挟持されていて、その状態で、キャビティ41、51内に樹脂が射出されるので、メッシュ部材11が位置ずれしたり、メッシュ部材11の端縁部が樹脂の射出圧によって屈曲して、成形される枠部材12の表面に浮き出たり、はみ出したりすることを確実に防止することができる。   In the state where the mold 30 is closed at this time, the edge portions disposed in the cavities 41 and 51 of the mesh member 11 are partially sandwiched by the pin-like protrusions 45 and 55, and in this state, Since the resin is injected into the cavities 41 and 51, the mesh member 11 is displaced, or the edge of the mesh member 11 is bent by the injection pressure of the resin, and is raised on the surface of the frame member 12 to be molded. , It can be reliably prevented from protruding.

したがって、メッシュ部材11の周縁が樹脂製の枠部材12に埋設されて、しっかりと保持されたメッシュフィルタ10を製造することができる。なお、突起45、55で挟持された部分は、前述したように通孔13が形成されて、メッシュ部材11が露出した部分となるので、メッシュフィルタ10のろ過面積を増大させることができる。   Therefore, the mesh filter 10 in which the peripheral edge of the mesh member 11 is embedded in the resin frame member 12 and firmly held can be manufactured. In addition, since the through-hole 13 is formed as described above and the mesh member 11 is exposed in the portion sandwiched between the protrusions 45 and 55, the filtration area of the mesh filter 10 can be increased.

図4〜6には、本発明のメッシュフィルタ製造用射出成形金型の他の実施形態が示されている。なお、前記実施形態と実質的に同一部分には同符号を付してその説明を省略することにする。   4 to 6 show another embodiment of an injection mold for producing a mesh filter of the present invention. It should be noted that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

この実施形態のメッシュフィルタ製造用射出成形金型30a(以下、金型30a)によれば、図4に示すようなメッシュフィルタ10aを製造することができる。このメッシュフィルタ10aは、前記実施形態のメッシュフィルタ10と基本的には同一形状をなしているが、通孔13が形成されておらず、切欠き溝14が形成されている点が相違する。したがって、金型30aにおいても、切欠き溝14を形成する部分である突起の形状が相違している。   According to the mesh filter manufacturing injection mold 30a (hereinafter referred to as mold 30a) of this embodiment, a mesh filter 10a as shown in FIG. 4 can be manufactured. The mesh filter 10a has basically the same shape as the mesh filter 10 of the above embodiment, but is different in that a through hole 13 is not formed and a notch groove 14 is formed. Therefore, also in the metal mold 30a, the shape of the protrusion which is a part for forming the notch groove 14 is different.

具体的には、図6に示すように、下型40a及び上型50aの各キャビティ41、51の内部側面に、支持台座43、53に連設して、リブ状の突起45a、55aが突設された形状をなしている。この突起45a、55aは、図5に示すように、キャビティ41、51の内側面に沿って、所定間隔をおいて複数設けられており、下型40a及び上型50aを閉じたとき、対応する突起45a、55aの合わせ面46、56によって、メッシュ部材11の端縁部が挟持されるようになっている。なお、各突起45a、55aは、キャビティ41、51の各辺部分に大略均等な間隔で位置するように形成されており、これによりメッシュ部材11の端縁部をバランスよく支持可能となっている。   Specifically, as shown in FIG. 6, rib-like protrusions 45 a and 55 a protrude from the inner side surfaces of the cavities 41 and 51 of the lower mold 40 a and the upper mold 50 a so as to be connected to the support bases 43 and 53. It has a set shape. As shown in FIG. 5, a plurality of the protrusions 45a and 55a are provided at predetermined intervals along the inner side surfaces of the cavities 41 and 51, and correspond to when the lower mold 40a and the upper mold 50a are closed. The edge portions of the mesh member 11 are sandwiched by the mating surfaces 46 and 56 of the protrusions 45a and 55a. In addition, each protrusion 45a, 55a is formed so that it may be located in each edge | side part of the cavities 41 and 51 at a substantially equal space | interval, and this can support the edge part of the mesh member 11 with sufficient balance. .

この実施形態の金型30aを用いてメッシュフィルタ10aを製造する工程は、前記実施形態と同様であるのでその説明は省略するが、この実施形態の金型30aによれば、前記実施形態の金型30と比べて、突起45a、55aが支持台座43、53に連設されているので、金型30a自体の製造が比較的容易であるという利点が得られる。   Since the process of manufacturing the mesh filter 10a using the mold 30a of this embodiment is the same as that of the above embodiment, the description thereof is omitted. However, according to the mold 30a of this embodiment, the mold of the above embodiment is used. Compared to the mold 30, the protrusions 45 a and 55 a are connected to the support bases 43 and 53, so that the advantage that the mold 30 a itself is relatively easy to manufacture is obtained.

本発明のメッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型により、製造したメッシュフィルタの一形状を示す斜視図である。It is a perspective view which shows one shape of the mesh filter manufactured with the manufacturing method of the mesh filter of this invention, and the injection mold for mesh filter manufacture. 同メッシュフィルタ製造用射出成形金型の一実施形態における上型を示す説明図である。It is explanatory drawing which shows the upper mold | type in one Embodiment of the injection mold for the said mesh filter manufacture. 同メッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型の一実施形態を示す説明図である。It is explanatory drawing which shows one Embodiment of the manufacturing method of the same mesh filter, and the injection mold for mesh filter manufacture. 本発明のメッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型により、製造したメッシュフィルタの他の形状を示す斜視図である。It is a perspective view which shows the other shape of the mesh filter manufactured with the manufacturing method of the mesh filter of this invention, and the injection mold for mesh filter manufacture. 同メッシュフィルタ製造用射出成形金型の他の実施形態における上型を示す説明図である。It is explanatory drawing which shows the upper mold | type in other embodiment of the injection mold for the said mesh filter manufacture. 同メッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型の他の実施形態を示す説明図である。It is explanatory drawing which shows other embodiment of the manufacturing method of the same mesh filter, and the injection mold for mesh filter manufacture. 従来のメッシュフィルタ製造用射出成形金型の上型を示す説明図である。It is explanatory drawing which shows the upper mold | type of the conventional injection mold for mesh filter manufacture. 同メッシュフィルタの製造方法及びメッシュフィルタ製造用射出成形金型を示す説明図である。It is explanatory drawing which shows the manufacturing method of the same mesh filter, and the injection mold for mesh filter manufacture.

符号の説明Explanation of symbols

10、10a メッシュフィルタ
11 メッシュ部材
12 枠部材
30、30a メッシュフィルタ製造用射出成形金型(金型)
40、40a 下型
41 キャビティ
43 支持台座
44 合わせ面(支持台座)
45、45a 突起
46 合わせ面(突起)
50、50a 上型
51 キャビティ
53 支持台座
54 合わせ面(支持台座)
55、55a 突起
56 合わせ面(突起)
10, 10a Mesh filter 11 Mesh member 12 Frame member 30, 30a Injection mold for producing mesh filter (mold)
40, 40a Lower mold 41 Cavity 43 Support base 44 Matching surface (support base)
45, 45a Protrusion 46 Matching surface (protrusion)
50, 50a Upper mold 51 Cavity 53 Support base 54 Matching surface (support base)
55, 55a Protrusion 56 Mating surface (protrusion)

Claims (3)

メッシュ部材を、枠状のキャビティと、該キャビティの内側に設けられた支持台座とを有する射出成形金型内に配置し、メッシュ部材の中央部を前記支持台座の合わせ面で保持しつつ、メッシュ部材の周縁に形成された前記キャビティに樹脂を射出して、メッシュ部材の周縁が樹脂製の枠部材で保持されたメッシュフィルタを製造する方法において、
前記キャビティの内部に入り込んで、前記金型を閉じたときに、前記メッシュ部材の前記キャビティ内に配置される端縁部を部分的に挟持するピン状又はリブ状をなし、前記支持台座の合わせ面と同じ高さの平坦な合わせ面を有する突起を前記金型の内面に形成し、前記突起によって前記メッシュ部材の端縁部を部分的に挟持しながら、前記キャビティ内に前記各合わせ面と平行でかつ異なる高さに設けられたランナーを通して樹脂を射出することを特徴とするメッシュフィルタの製造方法。
The mesh member is disposed in an injection mold having a frame-shaped cavity and a support pedestal provided inside the cavity, and the mesh member is held by the mating surface of the support pedestal while maintaining the center of the mesh member. and injecting a resin into the cavity formed in the periphery of the member, the method of the periphery of the mesh member to produce a mesh filter which is held by a frame member made of resin,
When entering the inside of the cavity and closing the mold, the mesh member has a pin shape or a rib shape that partially sandwiches an edge arranged in the cavity, and the support base is aligned. A projection having a flat mating surface having the same height as the surface is formed on the inner surface of the mold, and each of the mating surfaces is placed in the cavity while the edge of the mesh member is partially sandwiched by the projection. A method for producing a mesh filter, characterized by injecting resin through runners provided in parallel and at different heights .
前記メッシュ部材の端縁部であって、前記メッシュ部材の角部を、前記突起で挟持しながら前記キャビティ内に樹脂を射出する請求項1記載のメッシュフィルタの製造方法。   The method for manufacturing a mesh filter according to claim 1, wherein the resin is injected into the cavity while the corner portion of the mesh member is sandwiched between the protrusions at an edge portion of the mesh member. メッシュ部材の周縁を樹脂製の枠部材で保持したメッシュフィルタを製造するための射出成形金型において、
前記樹脂製の枠部材を成形する枠状のキャビティと、
前記メッシュ部材の中央部を合わせ面によって挟持すると共に、前記メッシュ部材の周縁部を前記キャビティ内に延出させて支持する支持台座と、
前記金型の内面から前記キャビティの内部に入り込むようにピン状又はリブ状をなし、前記支持台座の合わせ面と同じ高さの平坦な合わせ面を有していて、有前記金型を閉じたときに、前記メッシュ部材の前記キャビティ内に配置される端縁部を部分的に挟持する突起とを備え、
前記金型の一方の支持台座は分割面よりも隆起し、前記金型の他方の支持台座は分割面よりも陥没していて、前記金型の分割面には前記キャビティに連通するランナーが設けられていることを特徴とするメッシュフィルタ製造用射出成形金型。
In an injection mold for producing a mesh filter in which the periphery of the mesh member is held by a resin frame member,
A frame-like cavity for molding the resin frame member;
A support pedestal that sandwiches a center portion of the mesh member with a mating surface and supports a peripheral portion of the mesh member by extending into the cavity;
No internal Cored write unnecessarily pin-like or rib-like said cavity from the inner surface of the mold, have flat mating surfaces of the same height as the mating surface of the support pedestal, closed perforated the mold Occasionally, provided with a collision force Metropolitan said that the edge portion which is disposed in the cavity of the mesh member partially interposed Soo,
One support pedestal of the mold is raised from the dividing surface, the other support pedestal of the mold is depressed from the dividing surface, and a runner communicating with the cavity is provided on the dividing surface of the mold mesh filters prepared for injection-molding die, characterized in that it is.
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