JPH0451009Y2 - - Google Patents
Info
- Publication number
- JPH0451009Y2 JPH0451009Y2 JP1987006555U JP655587U JPH0451009Y2 JP H0451009 Y2 JPH0451009 Y2 JP H0451009Y2 JP 1987006555 U JP1987006555 U JP 1987006555U JP 655587 U JP655587 U JP 655587U JP H0451009 Y2 JPH0451009 Y2 JP H0451009Y2
- Authority
- JP
- Japan
- Prior art keywords
- mesh filter
- filter
- mounting plate
- mold
- mesh
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000005266 casting Methods 0.000 description 14
- 238000001914 filtration Methods 0.000 description 13
- 239000004576 sand Substances 0.000 description 8
- 239000003365 glass fiber Substances 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000009970 fire resistant effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、金属溶湯濾過用の網状フイルター構
造体に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a mesh filter structure for filtering molten metal.
（従来の技術）
ガラス繊維や炭素繊維等の耐火繊維で織製され
て保形性が与えられた網状フイルターは、アルミ
ニウム等の非鉄金属や鋳鉄、鋳鋼等の溶湯中に混
在したノロ、スラグ等の非金属介在物の分離効果
に優れているため、近年鋳造工業の分野で注目を
集めている。(Prior art) Reticulated filters woven from fire-resistant fibers such as glass fibers and carbon fibers to provide shape retention are capable of removing slag, slag, etc. mixed in non-ferrous metals such as aluminum, and molten metals such as cast iron and cast steel. Due to its excellent separation effect of non-metallic inclusions, it has been attracting attention in the casting industry in recent years.
この種の網状フイルターは、耐火繊維で織製さ
れた網状織布にフエノールレジンなどの硬化処理
がなされ、保形性が与えられた後、砂型造型鋳型
の湯口や湯道等の溶湯流路の途中に配設して使用
される。 This type of reticular filter is made by applying a hardening treatment such as phenol resin to a reticular woven fabric woven from fire-resistant fibers to give it shape retention. It is used by placing it in the middle.
例えば、第５図は、上型２１から下型２２に移
行して形成された湯口２３を横断する鋳型分割面
２４に前記の網状フイルター２５が配設された状
態を示しており、この場合、該網状フイルター２
５の周縁部は、上型２１と下型２２とによつて加
圧状態で挟持されている。同図において、２６は
板状のフイルター設置用中子、２７は湯口底、２
８は湯道、２９は製品鋳造空間、３０は押湯部鋳
造空間である。 For example, FIG. 5 shows a state in which the mesh filter 25 is disposed on the mold dividing surface 24 that crosses the sprue 23 formed by transitioning from the upper mold 21 to the lower mold 22, and in this case, The mesh filter 2
The peripheral edge portion of 5 is held between an upper mold 21 and a lower mold 22 under pressure. In the figure, 26 is a plate-shaped filter installation core, 27 is the sprue bottom, and 2
8 is a runner, 29 is a product casting space, and 30 is a feeder casting space.
（考案が解決しようとする問題点）
ところが、該上型２１と該下型２２とを閉じ該
網状フイルター２５を挟持する際の衝撃や溶湯の
落下衝撃を受けて該網状フイルター２５が位置ず
れや溶湯流路内への脱落を生ずることを防止する
ため、予め、該網状フイルター２５の周縁部、即
ち、押え代となる部分は、湯口径に応じて片側15
〜20mm程度は必要とし、該湯口２３の溶湯流路の
断面積に対して相当な広い面積を必要とした。(Problems to be Solved by the Invention) However, the mesh filter 25 may be displaced due to the impact when the upper mold 21 and the lower mold 22 are closed and the mesh filter 25 is held between them, or the impact from falling of the molten metal. In order to prevent the molten metal from falling into the molten metal flow path, the peripheral edge of the mesh filter 25, that is, the portion that will serve as the presser foot, is pre-aligned with a diameter of 15 mm on one side depending on the diameter of the molten metal.
20 mm, which is considerably larger than the cross-sectional area of the molten metal flow path of the sprue 23.
例えば、湯口径と網状フイルターとの具体的な
寸法関係を示すと、30−角60、40−角70、50
−角80（単位mm）であり、押え代面積／湯口断面
積が2.3〜4.1であつた。 For example, the specific dimensional relationship between the diameter of the melt and the mesh filter is 30 - angle 60, 40 - angle 70, 50
- angle 80 (unit: mm), and the presser foot area/gate cross-sectional area was 2.3 to 4.1.
従つて、押え代面積を小さくし、網状フイルタ
ーのコストに対する実質的使用面積（濾過部の面
積）の向上が望まれている。 Therefore, it is desired to reduce the area of the presser foot and to improve the substantial usable area (area of the filtration part) relative to the cost of the mesh filter.
また、一方、該網状フイルター２５を該上型２
１と該下型２２とによつて挟持する際、該網状フ
イルター２５の位置ずれを生じ、これに伴い砂型
鋳型の該湯口２３の周縁が型くずれして該湯口２
３への鋳砂の流入が生じ、砂かみなどの鋳造欠陥
が発生するという問題があつた。 On the other hand, the mesh filter 25 is attached to the upper mold 2.
1 and the lower mold 22, the mesh filter 25 is misaligned, and as a result, the periphery of the sprue 23 of the sand mold is deformed and the sprue 2
There was a problem that casting sand flowed into No. 3, causing casting defects such as sand pits.
本考案は上記従来の問題点を解消し、網状フイ
ルターを比較的小さい押え代で鋳型に安定に設置
することができ、しかも溶湯濾過時に網状フイル
ターに対する衝撃を緩和し、安定良好な濾過作用
を営むことができ、製造容易な金属溶湯濾過用の
網状フイルター構造体を提供することを目的とす
る。 The present invention solves the above-mentioned conventional problems, allows the mesh filter to be stably installed in the mold with a relatively small presser foot, and also alleviates the impact on the mesh filter during filtration of molten metal, resulting in a stable and good filtration action. An object of the present invention is to provide a mesh filter structure for filtrating molten metal that is easy to manufacture.
（問題点を解決するための手段）
上記の目的を達成するためになされた本考案の
網状フイルター構造体の構成は、中央部に鋳型の
溶湯流路と連通する開孔を設けたフイルター取付
板に、網状フイルターを該開孔を被蔽してその周
縁部を載置すると共に、その周縁部を、該フイル
ター取付板の該開孔の周囲板部に形成した複数個
の折曲部により、該フイルター取付板面に押え固
定して成る。(Means for Solving the Problems) The configuration of the mesh filter structure of the present invention, which was made to achieve the above object, is that the filter mounting plate has an opening in the center that communicates with the molten metal flow path of the mold. A net-like filter is placed on the peripheral edge of the opening to cover the opening, and the peripheral edge is formed in a plurality of bent portions on the surrounding plate of the opening of the filter mounting plate. It is press-fixed to the filter mounting plate surface.
（作用）
該網状フイルターは、該フイルター取付板の該
開孔を被蔽して載置し、該フイルター取付板の該
開孔の周囲板部に形成した複数個の折曲部によ
り、その周縁部を該フイルター取付板面にその周
縁部を押え固定したので、該網状フイルターを該
フイルター取付板に耐震、耐衝撃性の大きい強固
な取り付けが容易にできると同時に、該網状フイ
ルターの周縁部は比較的小さい面積の押え代で該
フイルター取付板に固定設置できる一方、網状フ
イルターの全面積に対する濾過面積は増大する。(Function) The net-like filter is placed so as to cover the opening of the filter mounting plate, and its peripheral edge is Since the periphery of the mesh filter is fixed to the filter mounting plate surface, the mesh filter can be easily and firmly attached to the filter mounting plate with high earthquake resistance and shock resistance. While the filter can be fixedly installed on the filter mounting plate with a relatively small pressing area, the filtration area relative to the total area of the mesh filter increases.
このように、該網状フイルターが予め該フイル
ター取付板に不動に取り付けられている本考案の
網状フイルター構造体を構成したので、該網状フ
イルターを鋳型の溶湯流路に設置する場合、その
該フイルター取付板をその中央部の開孔を該溶湯
流路と連通するように設置すれば、該網状フイル
ターを容易且つ確実に所定位置に設置できる。鋳
造後、該網状フイルターを該鋳型から取り出すと
きは、該網状フイルターが該フイルター取付板に
強固に取付けられているため、該フイルター取付
板と共に該網状フイルター全体を取り出すことが
できる。 As described above, since the mesh filter structure of the present invention is constructed in which the mesh filter is immovably attached to the filter mounting plate in advance, when the mesh filter is installed in the molten metal flow path of the mold, the filter mounting By installing the plate so that the opening in the center thereof communicates with the molten metal flow path, the mesh filter can be easily and reliably installed at a predetermined position. After casting, when removing the mesh filter from the mold, the entire mesh filter can be taken out together with the filter mounting plate, since the mesh filter is firmly attached to the filter mounting plate.
該フイルター取付板の中央部の開孔は、該溶湯
流路と連通しているので、鋳造に際し、溶湯は、
該開孔と重なる該網状フイルターの中央部を介し
て濾過される。この際の溶湯圧は、該網状フイル
ターを下面から支承している該フイルター取付板
に担持されるので、該網状フイルターの位置ず
れ、脱落などに伴う砂型鋳型の湯口の周縁の型く
ずれが防止され、安定良好な状態で濾過作用を営
む。該フイルター取付板は、該鋳型内において位
置ずれが生じ難いので、鋳型の上型と下型で必ず
しも挟持する必要がなく、設置用凹部内に収納し
不動に設置して使用することができる。 The opening in the center of the filter mounting plate communicates with the molten metal flow path, so during casting, the molten metal
It is filtered through the central part of the mesh filter that overlaps the apertures. The molten metal pressure at this time is carried by the filter mounting plate that supports the mesh filter from below, so that deformation of the periphery of the sprue of the sand mold due to displacement or falling off of the mesh filter is prevented. Performs filtration action in a stable and good condition. Since the filter mounting plate is unlikely to be misaligned within the mold, it does not necessarily need to be held between the upper and lower molds of the mold, and can be stored in the installation recess and installed immovably for use.
（実施例）
以下、添付図面を参照して本考案の実施例につ
いて説明する。(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
第１図及び第２図は本考案の第１実施例を示し
ており、図面で１は網状フイルター構造体を示
し、該網状フイルター構造体１は、鋼板製のフイ
ルター取付板２と網状フイルター３とで構成され
ている。 1 and 2 show a first embodiment of the present invention. In the drawings, reference numeral 1 indicates a mesh filter structure, and the mesh filter structure 1 includes a filter mounting plate 2 made of a steel plate and a mesh filter 3. It is made up of.
該フイルター取付板２は、厚さ0.4〜1.6mm程度
の方形状薄鋼板で形成されており、その中央部に
は、所定の鋳型の溶湯流路断面と同形の円形で而
もほぼ同径の開孔４が開設されている。 The filter mounting plate 2 is made of a rectangular thin steel plate with a thickness of about 0.4 to 1.6 mm, and in the center thereof, there is a circular plate having the same shape and approximately the same diameter as the molten metal flow path cross section of a predetermined mold. Opening hole 4 is opened.
また、その方形状フイルター取付板２の該開孔
４の周囲板部の四隅部には、図示の通り、プレス
成形等の手段によつて形成された三角状の切り起
こし片による４個の折曲部５が形成配設されてお
り、該切りおこし片は、該網状フイルター３の周
縁部の四隅部を突き通した後下向きに折り曲げら
れ、その折曲部５を該網状フイルター３の周縁
部、即ち、該フイルター取付板２面にその開口４
を被蔽して載置された周縁部の四隅部に圧着し、
かくしてこれらその折曲部５により該網状フイル
ター３の該周縁部を該フイルター取付板２の上面
に押え固定する。このように、該フイルター取付
板２に形成した切りおこし片を該網状フイルター
３の周縁部上面に圧接状態に折り曲げるだけで、
該フイルター取付板２の上面に、その中央部の開
孔４を横断して載置された該網状フイルター３が
該フイルター取付板２上面に強固に不動に取り付
けられて有する本考案の網状フイルター構造体１
が簡単に製作することができる一方、網状フイル
ター３の周縁部は比較的小さい押え代で、該フイ
ルター取付板２に固定でき、網状フイルター３の
製造コストに対する濾過部の面積を増大でき有利
である。 In addition, as shown in the figure, four folds of triangular cut-and-raised pieces formed by means such as press molding are placed at the four corners of the surrounding plate of the aperture 4 of the rectangular filter mounting plate 2. A bent portion 5 is formed and arranged, and the cut and raised piece is bent downward after passing through the four corners of the peripheral edge of the mesh filter 3, and the bent portion 5 is inserted into the peripheral edge of the mesh filter 3. That is, the opening 4 is formed on the second surface of the filter mounting plate.
Crimp the four corners of the periphery placed covering the
Thus, these bent portions 5 press and fix the peripheral edge of the mesh filter 3 to the upper surface of the filter mounting plate 2. In this way, simply by folding the cut piece formed on the filter mounting plate 2 into pressure contact with the upper surface of the peripheral edge of the mesh filter 3,
The mesh filter structure of the present invention has the mesh filter 3 placed on the top surface of the filter mounting plate 2 across the opening 4 in the center thereof and firmly and immovably attached to the top surface of the filter mounting plate 2. body 1
can be easily manufactured, and the peripheral edge of the mesh filter 3 can be fixed to the filter mounting plate 2 with a relatively small presser allowance, which is advantageous in that the area of the filtration part can be increased relative to the manufacturing cost of the mesh filter 3. .
尚、該切りおこし片５の該折曲部５の長さｌ
は、該網状フイルター３の網目の複数箇所を押え
込むことができるような長さにすることが好まし
い。 In addition, the length l of the bent portion 5 of the cut and raised piece 5
It is preferable that the length of the mesh filter 3 is such that a plurality of locations of the mesh of the mesh filter 3 can be pressed down.
該網状フイルター３は、ガラス繊維や炭素繊維
等の耐火繊維で形成され、通常フエノールレジン
等で保形されている。鋳造用金属として鋳鉄や鋳
鋼等の高融点金属溶湯を用いる場合、ガラス繊維
としてはSiO2含有量を75重量％以上とし、かつ
予め焼成して収縮させたものがよい。SiO2含有
量が75％以上であらゆる種類の鋳鉄溶湯（鋳込温
度1200〜1450℃）に適用でき、また予め焼成して
収縮させたものを用いる場合は、溶湯通過時のフ
イルターの収縮によるフイルターの破損を防止で
きる。 The mesh filter 3 is made of fire-resistant fibers such as glass fibers and carbon fibers, and is usually kept in shape with phenol resin or the like. When using a high melting point metal molten metal such as cast iron or cast steel as the casting metal, it is preferable that the glass fiber has an SiO 2 content of 75% by weight or more and has been previously fired to shrink. It can be applied to all types of molten cast iron with a SiO 2 content of 75% or more (casting temperature 1200 to 1450℃), and when using molten cast iron that has been pre-fired and shrunk, the filter shrinks when the molten metal passes through. damage can be prevented.
該網状フイルター３の目開きサイズは、除去す
るノロ、スラグ等の非金属介在物の大きさにもよ
るが、通常0.4〜４mm2で充分である。 Although the opening size of the mesh filter 3 depends on the size of the nonmetallic inclusions such as slag and slag to be removed, 0.4 to 4 mm 2 is usually sufficient.
また、該網状フイルター３の形状は、通常切断
の容易さから方形状とされる。また、その大きさ
は、該フイルター取付板２の該開孔４の周囲板縁
部と重なる径方向の長さは少なくとも２mm程度あ
ればよい。 Further, the shape of the mesh filter 3 is usually a rectangular shape for ease of cutting. Further, regarding the size thereof, the length in the radial direction overlapping with the peripheral plate edge of the opening 4 of the filter mounting plate 2 may be at least about 2 mm.
従つて、例えば、記述した通り、従来、湯口径
40mmのものに対して網状フイルターは角70mmのも
のを使用していたが、本考案では角44mmのもので
すみ、従来の網状フイルターに対して約60％の使
用面積の削減を図ることができる。 Therefore, for example, as described, conventionally, the diameter
In contrast to 40mm mesh filters, a 70mm square mesh filter was used, but with this invention, only 44mm square filters can be used, reducing the area used by approximately 60% compared to conventional mesh filters. .
第３図は本考案の第２実施例を示す。この実施
例は、中央部に該開孔４を有する方形状のフイル
ター取付板２ａとその上面に方形状の該網状フイ
ルター３を該開孔４を被蔽してその周縁部を該フ
イルター取付板２の該開孔４の周囲板部に重ねた
点は第１実施例と同じであるが、該フイルター取
付板２ａの該周囲板部における折曲部の形成が次
のように異なる。即ち、該網状フイルター３の該
周縁部を該フイルター取付板２ａ面に押え固定す
る折曲部５の形成は、第１実施例の切りおこし片
による折曲部５による形成に代え、方形状の該フ
イルター取付板２ａの四隅部の角部を直接折り曲
げて形成し、その折曲部７で方形状の該網状フイ
ルター３の周縁部を四隅部において上方から押圧
し、該フイルター取付板２ａの上面に押え固定し
たもので、これにより本考案の変形例である網状
フイルター構造体１ａを構成したものである。そ
の作用効果は、第１実施例と同じであるので説明
は省略するが、単に該フイルター取付板２ａの四
隅を折り曲げて該折曲部７を形成するだけである
ので、その製作は、更に容易である。 FIG. 3 shows a second embodiment of the invention. In this embodiment, a rectangular filter mounting plate 2a having an aperture 4 in the center and a rectangular mesh filter 3 on the upper surface of the filter mounting plate 2a are used to cover the aperture 4 and cover the periphery of the filter mounting plate 2a. The second embodiment is the same as the first embodiment in that it overlaps the surrounding plate of the opening 4 in No. 2, but the formation of the bent portion in the surrounding plate of the filter mounting plate 2a is different as follows. That is, the formation of the bent portion 5 that presses and fixes the peripheral edge of the mesh filter 3 to the surface of the filter mounting plate 2a is performed by using a rectangular bent portion 5 instead of forming the bent portion 5 using a cut and raised piece in the first embodiment. The four corners of the filter mounting plate 2a are formed by directly bending the corners, and the bent portions 7 press the periphery of the rectangular mesh filter 3 from above at the four corners, and the upper surface of the filter mounting plate 2a is This structure constitutes a mesh filter structure 1a which is a modified example of the present invention. The operation and effect are the same as those of the first embodiment, so a description thereof will be omitted. However, since the four corners of the filter mounting plate 2a are simply bent to form the bent portion 7, the production is easier. It is.
第４図は、前記の第２実施例の本考案の網状フ
イルター構造体１ａの使用状態、即ち、これを、
鋳型に設置した状態を示す。該鋳型は、上型１１
から下型１２に移行して湯口１３が形成されてお
り、下型１２の鋳型分割面の該湯口の開口周縁に
該網状フイルター構造体１ａの設置用凸部１４が
設けられている。該上型１１の該湯口１３の開口
周縁には該凹部１４に対向して凸部１５が設けら
れており、該凸部１５と該凹部１４との間に該網
状フイルター構造体１ａが挟持された状態で収納
されている。この場合、該構造体１ａは該凸部１
５および該凹部１４とによつて必ずしも挟持され
る必要はなく、該凸部１５は省略できる。しかし
乍ら、そのいずれの場合でも、該網状フイルター
３を固定した該フイルター取付板２ａが介在して
いるので、砂型鋳型に型くずれが生じる虞はな
い。 FIG. 4 shows the use state of the mesh filter structure 1a of the present invention according to the second embodiment, that is,
Shown as installed in the mold. The mold includes an upper mold 11
A sprue 13 is formed in the lower mold 12, and a convex portion 14 for installing the mesh filter structure 1a is provided around the opening of the sprue on the mold dividing surface of the lower mold 12. A convex portion 15 is provided on the opening periphery of the sprue 13 of the upper mold 11, facing the concave portion 14, and the mesh filter structure 1a is sandwiched between the convex portion 15 and the concave portion 14. It is stored in a closed condition. In this case, the structure 1a is the convex portion 1
5 and the recess 14, and the protrusion 15 can be omitted. However, in either case, since the filter mounting plate 2a to which the mesh filter 3 is fixed is interposed, there is no risk of the sand mold being deformed.
また、該凹部１４の鋳型分割面からの深さを網
状フイルター構造体１ａの厚さよりやや大き目に
して、該凹部１４に網状フイルター構造体１ａを
収納するだけでもよい。 Alternatively, the depth of the recess 14 from the mold dividing surface may be made slightly larger than the thickness of the mesh filter structure 1a, and the mesh filter structure 1a may simply be housed in the recess 14.
尚、該網状フイルター構造体１ａを設置する場
合、その網状フイルター側を上向きにして或いは
下向きにして設置することができる。又、同図に
おいて、１６は湯道であり、該湯道１６の前方に
は従来と同様に製品鋳造空間等が形成されてい
る。 When installing the mesh filter structure 1a, it can be installed with the mesh filter side facing upward or downward. Further, in the figure, reference numeral 16 is a runner, and in front of the runner 16, a product casting space and the like are formed as in the conventional case.
第４図示に明らかなように、本考案の網状フイ
ルター構造体１ａは、そのフイルター取付板２ａ
の中央部の開孔４を該湯口１３、即ち溶湯通路と
連通せしめた状態で設置されるので、溶湯の濾過
は、その網状フイルター３の中央の濾過面部で良
好に行われる。また、該網状フイルター３は、既
に該フイルター取付板２ａ上面に上記のようにそ
の周縁部を、四隅の折曲部７で強固に押圧固定さ
れているので、上型と下型とを閉じた際の衝撃や
溶湯濾過時の湯圧の衝撃による位置ずれがなく、
而もその注湯時の該網状フイルター３にかかる湯
圧や衝撃は、該フイルター取付板２に分担される
ので、該網状フイルター３の変形や脱落が防止さ
れ、安定な状態で良好な濾過作用を営むことがで
き、砂かみや砂型鋳型の型崩れのない良質の鋳造
製品をもたらす。鋳造後、鋳型を崩壊して製品鋳
造物を取り出すときは、これに伴つて、これと一
体の網状フイルター構造体１ａごと取り出すこと
ができる。換言すれば、該網状フイルター３は、
該フイルター取付板２ａに強固に取付けられてい
るので、該フイルター取付板２ａの取り出しと同
時に、該網状フイルター３全体を破損することな
く取り出すことができ、該崩壊鋳型中に残存する
ことがない。 As is clear from the fourth diagram, the mesh filter structure 1a of the present invention has a filter mounting plate 2a.
Since the aperture 4 at the center of the mesh filter 3 is installed in communication with the sprue 13, that is, the molten metal passage, filtration of the molten metal is effectively performed at the filtration surface at the center of the mesh filter 3. In addition, since the mesh filter 3 has already been firmly pressed and fixed at its peripheral edge to the upper surface of the filter mounting plate 2a by the bent portions 7 at the four corners as described above, the upper mold and the lower mold are closed. There is no positional shift due to impact during molten metal filtration or the impact of hot water pressure during filtration.
Moreover, since the hot water pressure and impact applied to the mesh filter 3 during pouring are shared by the filter mounting plate 2, the mesh filter 3 is prevented from deforming or falling off, and a good filtration action is achieved in a stable state. We can produce high-quality cast products that do not lose their shape in sand molds or sand molds. After casting, when the mold is collapsed and the cast product is taken out, the mesh filter structure 1a integrated therewith can be taken out. In other words, the mesh filter 3 is
Since it is firmly attached to the filter mounting plate 2a, the entire mesh filter 3 can be taken out without being damaged at the same time as the filter mounting plate 2a is taken out, and it will not remain in the collapsing mold.
（考案の効果）
このように、本考案によるときは、中央部に開
孔を有するフイルター取付板上面に網状フイルタ
ーを該開孔を被蔽してその周縁部を載置し、該網
状フイルターの周縁部を該フイルター取付板の該
開孔の周囲板部に形成した複数個の折曲部によ
り、該フイルター取付板面に押え固定して網状フ
イルター構造体を構成したので、該網状フイルタ
ーを該フイルター取付板に対し強固に不動に設置
した組立体、即ち、本考案の網状フイルター構造
体が容易に得られると共に、該網状フイルターの
周縁部の面積が少なくてすみ、該網状フイルター
のコストに対する実質的使用面積の向上をもたら
す。(Effect of the invention) As described above, according to the invention, a mesh filter is placed on the top surface of a filter mounting plate having an opening in the center, covering the opening, and the peripheral edge of the mesh filter is placed. The mesh filter structure was constructed by pressing and fixing the peripheral edge to the surface of the filter mounting plate using a plurality of bent parts formed in the surrounding plate of the opening of the filter mounting plate. The assembly that is firmly and immovably installed on the filter mounting plate, that is, the mesh filter structure of the present invention, can be easily obtained, and the area of the periphery of the mesh filter is small, which reduces the cost of the mesh filter. This results in an increase in the area used for the purpose.
従つて又、本考案の該網状フイルター構造体に
よれば、該網状フイルターの鋳型への設置は、該
フイルター取付板ごと行うため、設置作業が簡単
であると共に設置が安定に得られ、更には、従来
の網状フイルターを上型と下型とにより挟持する
式の上記従来の不都合を解消し、該フイルター取
付板により該網状フイルターに対する注湯時の衝
撃を緩和し、その開孔を介して安定良好な濾過作
用を営むことができる等の効果を有する。 Therefore, according to the mesh filter structure of the present invention, since the mesh filter is installed in the mold together with the filter mounting plate, the installation work is simple and the installation is stable. This eliminates the above-mentioned disadvantages of the conventional method in which a mesh filter is held between an upper mold and a lower mold, and the filter mounting plate alleviates the impact on the mesh filter during pouring, and stabilizes the mesh filter through its openings. It has the effect of being able to perform a good filtration action.
また、鋳造後、鋳型から製品鋳造物を取り出す
とき、これに伴い、該網状フイルター構造体全体
を取り出すことができる。即ち、該フイルター取
付板に取付けられている該網状フイルター全体を
損傷なく取り出すことができる。従つて従来のよ
うに、該網状フイルターの周縁部が鋳型中に残存
することがなく、従つて、回収鋳砂中にガラス繊
維が残存することがなく有利であり、又該回収鋳
砂によつて再造型された鋳型によつても、ガラス
繊維の存在に起因した表面欠陥の誘発を未然に防
止することができる等の効果を有する。 Moreover, when the product casting is taken out from the mold after casting, the entire mesh filter structure can be taken out accordingly. That is, the entire mesh filter attached to the filter mounting plate can be taken out without damage. Therefore, unlike the conventional method, the peripheral edge of the mesh filter does not remain in the mold, and therefore, there is no glass fiber remaining in the recovered casting sand, which is advantageous. Even with a mold that has been remolded, it is possible to prevent surface defects caused by the presence of glass fibers.
第１図は本考案の第１実施例に係る網状フイル
ター構造体の平面図、第２図は第１図Ａ−Ａ線裁
断の一部を省略した断面図、第３図は第２実施例
に係る網状フイルター構造体半部の平面図、第４
図は網状フイルター構造体の設置状態の断面図、
第５図は従来の網状フイルターを設置した砂型造
型鋳型の断面図である。
１，１ａ……網状フイルター構造体、２，２ａ
……フイルター取付板、３……網状フイルター、
４……開孔、５，７……折曲部。
FIG. 1 is a plan view of a mesh filter structure according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a second embodiment. FIG. 4 is a plan view of half of the mesh filter structure according to FIG.
The figure is a cross-sectional view of the installed state of the mesh filter structure.
FIG. 5 is a sectional view of a sand casting mold equipped with a conventional mesh filter. 1, 1a...Mesh filter structure, 2, 2a
...Filter mounting plate, 3...Mesh filter,
4... Open hole, 5, 7... Bent part.
Claims (1)
たフイルター取付板に、網状フイルターを該開孔
を被蔽してその周縁部を載置すると共に、その周
縁部を、該フイルター取付板の該開孔の周囲板部
に形成した複数個の折曲部により、該フイルター
取付板面に押え固定して成る網状フイルター構造
体。 A mesh filter is placed on a filter mounting plate having an opening in the center that communicates with the molten metal flow path of the mold, covering the opening, and the peripheral edge thereof is placed on the filter mounting plate. A net-like filter structure which is pressed and fixed to the filter mounting plate surface by a plurality of bent portions formed in the peripheral plate portion of the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987006555U JPH0451009Y2 (en) | 1987-01-19 | 1987-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987006555U JPH0451009Y2 (en) | 1987-01-19 | 1987-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63116140U JPS63116140U (en) | 1988-07-27 |
| JPH0451009Y2 true JPH0451009Y2 (en) | 1992-12-01 |
Family
ID=30789183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987006555U Expired JPH0451009Y2 (en) | 1987-01-19 | 1987-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451009Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0719650Y2 (en) * | 1988-05-30 | 1995-05-10 | 日本無機株式会社 | Mold equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521850U (en) * | 1975-06-23 | 1977-01-07 |
-
1987
- 1987-01-19 JP JP1987006555U patent/JPH0451009Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521850U (en) * | 1975-06-23 | 1977-01-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63116140U (en) | 1988-07-27 |
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