JP3927877B2 - Injection molding machine for recycled materials - Google Patents

Injection molding machine for recycled materials Download PDF

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Publication number
JP3927877B2
JP3927877B2 JP2002206990A JP2002206990A JP3927877B2 JP 3927877 B2 JP3927877 B2 JP 3927877B2 JP 2002206990 A JP2002206990 A JP 2002206990A JP 2002206990 A JP2002206990 A JP 2002206990A JP 3927877 B2 JP3927877 B2 JP 3927877B2
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Japan
Prior art keywords
injection
filter
plasticizing
main body
foreign matter
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JP2002206990A
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Japanese (ja)
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JP2004050427A5 (en
JP2004050427A (en
Inventor
康彦 竹内
勇一 桜田
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Nissei Plastic Industrial Co Ltd
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Nissei Plastic Industrial Co Ltd
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Priority to JP2002206990A priority Critical patent/JP3927877B2/en
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Description

【0001】
【発明の属する技術分野】
この発明は、可塑化した樹脂から異物を分離除去する異物除去装置を備えたリサイクル材料用射出成形機に関するものである。
【0002】
【発明が解決しようとする課題】
使用済み樹脂(例えばPET)を回収して、分別、粉砕、洗浄、乾燥し、これをリサイクル材料として製品の成形に再使用することが行われている。このリサイクル材料の多くはフレーク状で、異物が混入していることがあるので、異物の混入が多少あっても不良品扱されないような製品については、フレーク状のまま成形材料として使用することができる。
【0003】
しかしながら、僅かなか異物の混入も不良品として排除される製品の成形材料としては使用することができず、この場合には、フレーク状の材料を押出機により再溶融して金網のフイルターに通し、異物を除去してからペレット化して使用している。このペレットに再生した材料による成形では、製品中に異物が混入して不良品となることはないが、ペレット化時と二度の製品成形時の加熱により、樹脂の熱履歴がかさんで剛性等の物性が低下し易い。このため製品によってはリサイクル材料が使用できず、その用途は制限されがちであった。またペレットに再生して使用すると、ペレット化に要する費用によってリサイクル材料でありながらコストが増し、経済的な効果も低減するなどの課題を有する。
【0004】
このようなリサイクル材料による異物混入と熱履歴による樹脂劣化の課題は、射出装置にフイルターを取り付けて異物を分離除去できるようにすれ解決するところであるが、周知のようにインラインスクリュ式射出装置は、ノズルを先端に備えた射出シリンダ内に射出スクリュを回転かつ進退自在に有し、その射出スクリュの回転と後退とにより可塑化してシリンダ前部に計量した樹脂を、射出スクリュの前進により金型にノズルタッチしたノズルからキャビティに射出充填する構造からなる。
【0005】
このような射出装置のシリンダ前部内に、可塑化された樹脂中の異物を分離除去するフイルターを設けることは構造的に難しく、またフイルターの取り付けが可能であっても、金型に射出充填される樹脂の流動圧力損出が増大して成形が困難となる。またフイルターが射出圧力に耐えず短時間で破損して機能を失い、その寿命は極めて短いものとなることから、フイルターの交換を頻繁に行わなければならず、その都度、成形が中断されるので成形効率が低下するなどの課題を有する。
【0006】
この発明の目的は、射出成形機でも可塑化後に射出圧力の影響を受けることなく、フイルターによる樹脂中の異物の分離除去が可能であり、また射出充填される樹脂の流動圧力損出もなく、フレーク状のリサイクル材料をそのまま可塑化して射出成形することができる新たなリサイクル材料用射出成形機を提供することにある。
【0007】
【課題を解決するための手段】
上記目的によるこの発明は、射出プランジャ内装の射出装置と、その射出装置に並設した可塑化スクリュ内装の可塑化装置と、射出シリンダに連通して可塑化シリンダの前面に設けた流通装置と、その流通装置と可塑化シリンダとの間に介在し、内部に備えた金属網のフイルターにより可塑化樹脂中の異物を分離除去して樹脂を射出装置に供給する異物除去装置とからなり、その異物除去装置を、内面中央に形成した凹所の中央に流路を有する一対の盤体を互いに内面を合わせて一体に結合した本体と、該凹所により本体の内部中央に形成した断面積が上記流路の断面積より大きな分離室と、その分離室内に張設した上記フィルターとから構成して、本体の流入側を上記可塑化シリンダの蓋部材に取り付け、流出側を流通装置の上部ブロックに直結して、上記可塑化装置と流通装置とにわたり設けてなる、というものである。
【0008】
また上記異物除去装置は、前後壁が円錐台状形で中央に細径の流入路と流出路とが穿設された円形の分離室を有する本体と、その本体を貫通止着して分離室の上下に設けた長方形の支持枠と、分離室と略同径に板面に設けた複数の窓穴に上記フイルターを着脱自在に嵌着して、支持枠に摺動自在に嵌装したフイルター設置板と、そのフイルター設置板と支持枠とにわたり設けた摺動装置とからなる、というものである。
【0010】
【発明の実施の形態】
図中1は射出装置で、受台10に進退自在に設置して機台上に設けてある。2は可塑化装置で、後部を機台上の受台20に進退自在に設置とて射出装置1の上部に並設してある。3は射出装置1のシリンダ上に設置して上部を可塑化装置2の前面に立設した樹脂の流通装置、4は可塑化装置と流通装置3との間に設けた異物除去装置である。
【0011】
上記射出装置1は、射出プランジャ11を進退自在に内装し、かつ先端にノズル部材12を備える射出シリンダ13と、その射出シリンダ13の後端の保持部材14に連設して、図示しないピストンを射出プランジャ11に連結した射出用の油圧シリンダ15とからなり、上記保持部材14の部分を上記台座10に進退自在に設置して機台上に設けられている。
【0012】
上記可塑化装置2は、リサイクル材料中の水分や発生ガスを排出するベント穴21を有する可塑化シリンダ22の内部に、逆止弁付きの可塑化スクリュ23を回転かつ進退自在に備える。この可塑化スクリュ23の図示しない後端には、図4に示す可塑化シリンダ22の後部の保持部材24に連設した油圧シリンダ25のピストン(図は省略)が連結してあり、その保持部材24を上記受台20に進退自在に設置して機台上に設置してある。
【0013】
また油圧シリンダ25の後端には、スクリュ回転用のモータ26が取り付けてあり、可塑化シリンダ22の先端は、細径の樹脂路27を中央に穿設した盤状の蓋部材28により閉鎖してある。なお、29は上記保持部材24の先端部上に設けたホッパーである。
【0014】
上記流通装置3は、射出シリンダ13の前部上に連結した下部ブロック31と、その上に載置固定して可塑化装置2の前面に立設した上部ブロック32と、上部ブロック32の上に佇設したエア又は油圧作動のバルブ駆動装置33とからなり、下部ブロック31の内部中央には、射出シリンダ13のプランジャ前進限位置に開口した下部流路34が縦設してある。
【0015】
また上部ブロック32の内部には、中央に穿設して下部流路34に接続した縦路と、その縦路に側面から斜めに穿設した斜路とによる上部流路35が設けてあり、その縦路にニードルバルブ36が、上記バルブ駆動装置33から上下流路の接続部位に設けた弁座37まで上下動自在に挿通してある。
【0016】
上記異物除去装置4は、内面中央に形成した円錐台状形の凹所の中央に、細径の流入路41aと流出路41b穿設した一対の盤体を互いに内面を合わせて、上下部材42の嵌合により一体に結合し、内部中央に前後壁が円錐台状形で円形の分離室43を形成した本体44と、その本体44の合わせ面に貫通止着して、分離室43の上下に設けた本体両側の長方形の支持枠45と、分離室43と略同径に板面に設けた複数の窓穴に、多孔板46と共に金網のフイルター47を着脱自在に嵌着して、支持枠45に摺動自在に嵌装した長方形のフイルター設置板48と、そのフイルター設置板48の端部にピストンロッド49aを連結し、シリンダ49bを支持枠45の端部に取り付けたエア又は油圧作動の摺動装置49とからなる。なお、上記フイルター47は網目が300〜23μmのもので、その複数枚を積重して使用される。
【0017】
このような異物除去装置4は、可塑化シリンダ22の蓋部材28に、流路を穿設した接続盤50を介して本体44の流入側を取り付け、流出側を流通装置3の上部ブロック32に直結して、可塑化装置2と流通装置3とにわたり設けられ、これにより可塑化シリンダ内の可塑化スクリュ23の回転と外部加熱とにより可塑化された樹脂が、可塑化スクリュ23の前進ににより樹脂路27に押し出されて、分離室43に張設されたフイルター47を通過する際に、樹脂中の異物がフイルター47に捕捉されて分離除去され、樹脂のみが流通装置3の上下部の流路35,34を経て射出装置1のシリンダ前部内に送出されることになる。
【0018】
図示の可塑化装置2におけるリサイクル材料の可塑化と蓄積及び送出は、可塑化スクリュ23の回転による樹脂圧又は樹脂圧による後退及び前進移動とにより行われ、計量は射出装置1における前進位置の射出プランジャ11の樹脂圧による後退により行われるが、可塑化装置2は定位置で回転する可塑化スクリュを内装したものであってもよい。その何れの場合でも可塑化された樹脂の送出圧力(たとえば800Kgf/cm2 )は、射出プランジャ11による射出圧力よりも著しく低圧であることから、樹脂圧によりフイルター47の網目が変形して短期間で機能を失うことはない。
【0019】
また流出入路41a,41bの断面積よりも分離室43の断面積を大きく形成し、その分離室43を遮断する状態にフイルター47が張設されるので、流入路1aに対面するフイルター中央部が、異物の捕捉により樹脂の流通が悪くなって流動抵抗が生ずるようなことがあっても、その周辺の流通し易い部分を樹脂が通過することから目詰まりによる機能の喪失も起こり難い。
【0020】
さらに摺動装置49によりフイルター設置板48を移動して、板面内に取り付けたフイルター47を入れ替え、外部にて使用済みのフイルターを新たなものに交換できるので、フイルター交換のために成形作業を中断する必要もなく、図では省略しているが、入れ替えも分離室43の流入側に圧力センサーを設置し、設定圧力以上の樹脂圧を検出したときに、摺動装置49が自動的に作動するように構成して、長時間にわたる連続成形にも対応させることができる。
【0021】
また異物除去装置4を可塑化装置側に設けたことによって、フイルター47が射出圧力の抵抗とならず、射出装置側に設けた場合に生ずる樹脂の流動圧力損出を来すことなく、リサイクル材料の可塑化から射出充填に至る行程を、通常のプリプラ式射出成形機と同様な成形サイクルのもとに行うことができる。これにより異物の混入を嫌って直接使用を避けていたリサイクル材料を、通常材料と同様に精密成形品などの成形用材料として使用できるようになる。この結果、熱履歴の少ないリサイクル材料による品質の高い製品の射出成形が可能となる。
【0022】
おな、この発明の射出成形機は、リサイクル材料だけではなく通常材料も使用できることはいうまでもない。
【図面の簡単な説明】
【図1】 この発明に係るリサイクル材料用射出成形機の要部縦断面図である。
【図2】 異物除去装置の本体の縦断側面図である。
【図3】 異物除去装置の流入側の縦断正面図である。
【図4】 成形機全体の側面図である。
【符号の説明】
1 射出装置
2 可塑化装置
3 流通装置
4 異物除去装置
11 射出プランジャ
12 ノズル
13 射出シリンダ
22 可塑化シリンダ
23 可塑化スクリュ
27 樹脂路
28 蓋部材
31 下部ブロック
32 上部ブロック
33 バルブ装置
34 下部流路
35 上部流路
36 ニードルバルブ
41a 流入路
41b 流出路
43 分離室
44 本体
45 支持枠
47 フイルター
48 フイルター設置板
50 摺動装置
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an injection molding machine for recycled materials provided with a foreign matter removing device for separating and removing foreign matters from plasticized resin.
[0002]
[Problems to be solved by the invention]
A used resin (for example, PET) is collected, separated, pulverized, washed, dried, and reused as a recycled material for product molding. Many of these recycled materials are in the form of flakes and foreign matter may be mixed in. Therefore, products that are not handled as defective products even if there is some foreign matter can be used as molding materials in the form of flakes. it can.
[0003]
However, it cannot be used as a molding material of a product in which a slight amount of foreign matter is excluded as a defective product. In this case, the flaky material is remelted by an extruder and passed through a wire mesh filter, Pelletized after removing foreign substances. Molding with the recycled material in this pellet does not result in a defective product due to foreign matter mixed in the product, but it is rigid due to the heat history of the resin due to heating during pelletization and twice product molding The physical properties such as these are likely to deteriorate. For this reason, recycled materials cannot be used for some products, and their use tends to be limited. Moreover, when it regenerates and uses it as a pellet, it has the subject that cost increases while it is a recycled material by the expense required for pelletization, and an economical effect is also reduced.
[0004]
The problem of resin contamination due to such foreign materials mixed with recycled materials and heat history is to solve the problem by attaching a filter to the injection device so that the foreign material can be separated and removed, but as is well known, the inline screw type injection device is An injection screw with a nozzle at the tip has an injection screw that can be rotated and moved back and forth, and the resin that has been plasticized by the rotation and retraction of the injection screw and measured at the front of the cylinder is transferred to the mold by the advance of the injection screw. It consists of a structure that fills the cavity from the nozzle touched nozzle.
[0005]
It is structurally difficult to provide a filter for separating and removing foreign substances in plasticized resin in the cylinder front part of such an injection device, and even if the filter can be attached, the mold is injected and filled. The flow pressure loss of the resin increases and molding becomes difficult. Also, the filter cannot withstand the injection pressure and breaks in a short time, loses its function and its life is extremely short, so the filter must be replaced frequently and the molding is interrupted each time. There are problems such as a reduction in molding efficiency.
[0006]
The object of the present invention is that it is possible to separate and remove foreign substances in the resin by a filter without being affected by the injection pressure after plasticizing even in an injection molding machine, and there is no loss of flow pressure of the resin to be injected and filled. It is an object of the present invention to provide a new injection molding machine for recycled material, which can plasticize a flaky recycled material as it is and perform injection molding.
[0007]
[Means for Solving the Problems]
The present invention according to the above object includes an injection device with an injection plunger, a plasticizing device with a plasticizing screw provided in parallel with the injection device, a flow device provided in front of the plasticizing cylinder in communication with the injection cylinder, interposed between the distribution apparatus and the plasticizing cylinder, the filter of the metal net provided inside consists of a foreign matter removing apparatus by separating and removing foreign matter from the plasticized resin supplying resin to the injection apparatus, the foreign matter A main body in which a pair of disc bodies having a flow path in the center of a recess formed in the center of the inner surface are integrally coupled with each other, and a cross-sectional area formed in the inner center of the main body by the recess is described above. A separation chamber larger than the cross-sectional area of the flow path and the filter stretched in the separation chamber, the inflow side of the main body is attached to the lid member of the plasticizing cylinder, and the outflow side is the upper block of the flow device Directly to, formed by providing over the distribution device and the plasticizing device, is that.
[0008]
Further, the foreign matter removing device includes a main body having a circular separation chamber in which front and rear walls are frustoconical and a small inflow passage and an outflow passage are formed in the center, and the main body is penetrated and fixed to the separation chamber. The above-mentioned filter is detachably fitted into a plurality of window holes provided on the plate surface having the same diameter as that of the separation chamber, and the filter is slidably fitted to the support frame. It consists of an installation plate and a sliding device provided over the filter installation plate and the support frame.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the figure, reference numeral 1 denotes an injection device which is installed on a pedestal 10 so as to be movable forward and backward. Reference numeral 2 denotes a plasticizing device, the rear portion of which is installed in a cradle 20 on the machine base so as to be movable back and forth, and is arranged in parallel on the upper portion of the injection device 1. 3 is a resin flow device installed on the cylinder of the injection device 1 and the upper part is erected on the front surface of the plasticizer 2, and 4 is a foreign matter removing device provided between the plasticizer and the flow device 3.
[0011]
The injection device 1 includes an injection plunger 11 that is movable forward and backward, and that is provided with an injection cylinder 13 having a nozzle member 12 at the tip and a holding member 14 at the rear end of the injection cylinder 13, and a piston (not shown). The hydraulic cylinder 15 for injection connected to the injection plunger 11 is provided on the machine base with the holding member 14 being installed on the base 10 so as to be able to advance and retract.
[0012]
The plasticizing apparatus 2 includes a plasticizing screw 23 with a check valve inside a plasticizing cylinder 22 having a vent hole 21 for discharging moisture and generated gas in the recycled material so as to be rotatable and advanceable and retractable. A piston (not shown) of a hydraulic cylinder 25 connected to a rear holding member 24 of the plasticizing cylinder 22 shown in FIG. 4 is connected to a rear end (not shown) of the plasticizing screw 23. 24 is installed on the pedestal 20 so as to be movable forward and backward.
[0013]
A screw rotation motor 26 is attached to the rear end of the hydraulic cylinder 25, and the tip of the plasticizing cylinder 22 is closed by a disk-shaped lid member 28 having a small diameter resin passage 27 formed in the center. It is. Reference numeral 29 denotes a hopper provided on the tip of the holding member 24.
[0014]
The flow device 3 includes a lower block 31 connected to the front portion of the injection cylinder 13, an upper block 32 placed and fixed on the front block 32 and standing on the front surface of the plasticizing device 2, and an upper block 32. The lower flow path 34 opened vertically to the plunger advance limit position of the injection cylinder 13 is provided vertically in the center of the lower block 31.
[0015]
Further, inside the upper block 32, there is provided an upper flow path 35 having a longitudinal path drilled in the center and connected to the lower flow path 34, and an oblique path drilled obliquely from the side surface in the longitudinal path. A needle valve 36 is inserted in the vertical path from the valve drive device 33 to a valve seat 37 provided at a connection portion of the vertical flow path so as to be movable up and down.
[0016]
The foreign matter removing device 4 includes a pair of disc bodies each having a small-diameter inflow passage 41a and an outflow passage 41b in the center of a frustoconical recess formed in the center of the inner surface. bound together by 42 fitting the front and rear walls inside center body 44 forming a circular separation chamber 43 in the frustoconical shape, to penetrate fastened to the mating surface of the body 44, the separation chamber 43 A metal mesh filter 47 and a perforated plate 46 are detachably fitted into rectangular support frames 45 on both sides of the main body provided on the upper and lower sides, and a plurality of window holes provided on the plate surface with substantially the same diameter as the separation chamber 43, A rectangular filter installation plate 48 slidably fitted to the support frame 45, a piston rod 49 a connected to the end of the filter installation plate 48, and air or hydraulic pressure attached to the end of the support frame 45. And an operating sliding device 49. The filter 47 has a mesh of 300 to 23 μm, and a plurality of the filters 47 are used in a stacked manner.
[0017]
Such a foreign matter removing device 4 is attached to the lid member 28 of the plasticizing cylinder 22 through the connection board 50 having a flow passage, and the inflow side of the main body 44 is attached to the upper block 32 of the distribution device 3. Directly connected and provided between the plasticizing device 2 and the flow device 3, the resin plasticized by the rotation of the plasticizing screw 23 in the plasticizing cylinder and external heating is caused by the advance of the plasticizing screw 23. When pushed through the resin passage 27 and passes through the filter 47 stretched in the separation chamber 43, the foreign matter in the resin is captured and separated and removed by the filter 47, and only the resin flows in the upper and lower parts of the flow device 3. It is sent out into the cylinder front part of the injection device 1 through the paths 35 and 34.
[0018]
Plasticization, accumulation, and delivery of the recycled material in the illustrated plasticizing apparatus 2 are performed by resin pressure generated by rotation of the plasticizing screw 23 or backward movement and forward movement by the resin pressure, and metering is performed at an advance position in the injection apparatus 1. Although it is performed by the retraction of the plunger 11 by the resin pressure, the plasticizing device 2 may include a plasticizing screw that rotates at a fixed position. Short period that any delivery pressure of the plasticized resin, even if (for example 800 kgf / cm 2), since it is considerably lower pressure than the injection pressure by the injection plunger 11 deforms the mesh of the filter 47 by resin pressure With no loss of functionality.
[0019]
Further, since the cross-sectional area of the separation chamber 43 is formed larger than the cross-sectional area of the outflow / inflow passages 41a and 41b, and the filter 47 is stretched so as to block the separation chamber 43, the central portion of the filter facing the inflow passage 1a. However, even if the flow of the resin is deteriorated due to the trapping of the foreign matter and the flow resistance is generated, the loss of the function due to the clogging is unlikely to occur because the resin passes through the easily circulating portion around the resin.
[0020]
Furthermore, since the filter installation plate 48 is moved by the sliding device 49, the filter 47 attached in the plate surface can be replaced, and the used filter can be replaced with a new one outside. Although there is no need to interrupt, although it is omitted in the figure, the sliding device 49 automatically operates when a pressure sensor is installed on the inflow side of the separation chamber 43 and a resin pressure higher than the set pressure is detected. Thus, it is possible to cope with continuous molding over a long time.
[0021]
Further, by providing the foreign matter removing device 4 on the plasticizing device side, the recycled material does not cause the flow pressure loss of the resin that occurs when the filter 47 is provided on the injection device side without causing the resistance of the injection pressure. The process from plasticization to injection filling can be performed under a molding cycle similar to that of a normal pre-plastic injection molding machine. This makes it possible to use recycled materials that have been avoided from being used directly because they are apt to be mixed with foreign substances, and can be used as molding materials such as precision molded products in the same way as normal materials. As a result, it is possible to injection-mold a high-quality product using a recycled material with a small heat history.
[0022]
Needless to say, the injection molding machine of the present invention can use not only recycled materials but also ordinary materials.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of an injection molding machine for recycled material according to the present invention.
FIG. 2 is a longitudinal side view of the main body of the foreign matter removing apparatus.
FIG. 3 is a longitudinal front view of the inflow side of the foreign matter removing apparatus.
FIG. 4 is a side view of the entire molding machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Injection apparatus 2 Plasticizing apparatus 3 Flow apparatus 4 Foreign material removal apparatus 11 Injection plunger 12 Nozzle 13 Injection cylinder 22 Plasticizing cylinder 23 Plasticizing screw 27 Resin path 28 Lid member 31 Lower block 32 Upper block 33 Valve apparatus 34 Lower flow path 35 Upper flow path 36 Needle valve 41a Inflow path 41b Outflow path 43 Separation chamber 44 Main body 45 Support frame 47 Filter 48 Filter installation plate 50 Sliding device

Claims (2)

射出プランジャ内装の射出装置と、その射出装置に並設した可塑化スクリュ内装の可塑化装置と、射出シリンダに連通して可塑化シリンダの前面に設けた流通装置と、その流通装置と可塑化シリンダとの間に介在し、内部に備えた金属網のフイルターにより可塑化樹脂中の異物を分離除去して樹脂を射出装置に供給する異物除去装置と、流通装置に設けたブロック内の流路を開閉するバルブの駆動装置とからなり
その異物除去装置を、内面中央に形成した凹所の中央に流路を有する一対の盤体を互いに内面を合わせて一体に結合した本体と、該凹所により本体の内部中央に形成した断面積が上記流路の断面積より大きな分離室と、その分離室内に張設した上記フィルターとから構成して、本体の流入側を上記可塑化シリンダの蓋部材に取り付け、流出側を流通装置の上部ブロックに直結して、上記可塑化装置と流通装置とにわたり設けてなることを特徴とするリサイクル材料用射出成形機。
An injection device with an injection plunger, a plasticizing device with a plasticizing screw provided in parallel with the injection device, a flow device in communication with the injection cylinder and provided in front of the plasticizing cylinder, and the flow device and the plasticizing cylinder interposed between, the filter of metal mesh with internal and foreign matter removing device for supplying the resin to separate and remove foreign matter from the plasticized resin into the injection device, the flow path in the block provided on the distribution device It consists of a valve drive that opens and closes,
The foreign matter removing device has a main body in which a pair of disk bodies having a flow path at the center of a recess formed at the center of the inner surface are joined together with the inner surfaces aligned, and a cross-sectional area formed at the inner center of the main body by the recess. Is composed of a separation chamber larger than the cross-sectional area of the flow path and the filter stretched in the separation chamber, the inflow side of the main body is attached to the lid member of the plasticizing cylinder, and the outflow side is the upper part of the flow device An injection molding machine for recycled material , which is directly connected to a block and provided between the plasticizing apparatus and the distribution apparatus .
上記異物除去装置は、前後壁が円錐台状形で中央に細径の流入路と流出路とが穿設された円形の分離室を有する本体と、その本体を貫通止着して分離室の上下に設けた長方形の支持枠と、上記分離室と略同径に板面に設けた複数の窓穴に上記フイルターを着脱自在に嵌着して、支持枠に摺動自在に嵌装したフイルター設置板と、そのフイルター設置板と支持枠とにわたり設けた摺動装置とからなることを特徴とする請求項1記載のリサイクル材料用射出成形機。  The foreign matter removing device includes a main body having a circular separation chamber in which front and rear walls have a truncated cone shape and a small inflow passage and an outflow passage are formed in the center, and the main body is penetrated and fixed. A filter frame in which the filter is detachably fitted into a plurality of window holes provided on a plate surface having a rectangular support frame provided on the upper and lower sides and approximately the same diameter as the separation chamber, and is slidably fitted to the support frame. 2. An injection molding machine for recycled materials according to claim 1, comprising an installation plate and a sliding device provided over the filter installation plate and the support frame.
JP2002206990A 2002-07-16 2002-07-16 Injection molding machine for recycled materials Expired - Fee Related JP3927877B2 (en)

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