JP2007098884A - Apparatus for mixing and feeding lightweight powder and granule - Google Patents

Apparatus for mixing and feeding lightweight powder and granule Download PDF

Info

Publication number
JP2007098884A
JP2007098884A JP2005294733A JP2005294733A JP2007098884A JP 2007098884 A JP2007098884 A JP 2007098884A JP 2005294733 A JP2005294733 A JP 2005294733A JP 2005294733 A JP2005294733 A JP 2005294733A JP 2007098884 A JP2007098884 A JP 2007098884A
Authority
JP
Japan
Prior art keywords
mixing
lightweight
tanks
material supply
tank
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.)
Granted
Application number
JP2005294733A
Other languages
Japanese (ja)
Other versions
JP4702941B2 (en
Inventor
Hiromi Komatsu
浩見 幸松
Isao Yasumatsu
功 安松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YUFU GOSEI KAGAKU KK
Original Assignee
YUFU GOSEI KAGAKU KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YUFU GOSEI KAGAKU KK filed Critical YUFU GOSEI KAGAKU KK
Priority to JP2005294733A priority Critical patent/JP4702941B2/en
Publication of JP2007098884A publication Critical patent/JP2007098884A/en
Application granted granted Critical
Publication of JP4702941B2 publication Critical patent/JP4702941B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Accessories For Mixers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide, at a low cost, a convenient apparatus which efficiently mixes a plurality of kinds of lightweight powder and granules and feeds the mixture to a succeeding process. <P>SOLUTION: The apparatus is equipped with (a) two independent tanks 5-1 and 5-2 having downward throttling shapes 1-1 and 1-2, respectively, material feeding openings 2-1 and 2-2 on sides, suction apparatus connecting openings 3-1 and 3-2 on upper parts, and circular material discharging openings 4-1 and 4-2 on bottoms, (b) guides 6-1 and 6-2 obliquely arranged below the material discharging openings of respective tanks and composed of two parallel round rod-like bodies, (c) lightweight spheres 7-1 and 7-2 placed on the respective guides and between them and the material discharging openings of the tanks and having larger diameters than the material discharging openings, (d) hoppers 8 surrounding lower throttling parts of the two tanks and storing the guides and the lightweight spherical bodies, and (e) discharging openings 9 at lower parts of the hoppers connected to apparatuses for use. The lightweight spheres 7-1 and 7-2 perform valve actions when insides of the tanks are sucked, and perform mixing actions for the lightweight powder and granule falling when suction is released. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、軽量粉粒体の混合供給装置、特に、樹脂を射出成形する際に発生するスプルランナーの粉砕材と射出成形用原材料(以下、「バージン材」と記す。)とを混合して射出成形機に送り込むための混合供給装置に関する。   The present invention mixes and supplies a light-weight granular material mixing device, in particular, a sprue runner pulverized material generated during injection molding of a resin and a raw material for injection molding (hereinafter referred to as “virgin material”). The present invention relates to a mixing and feeding device for feeding into an injection molding machine.

通常、樹脂を射出成形する工程では、成形製品とは別に、湯道となった不要成形品が排出される。この不要成形品はスプルランナーと称され、成形材として再利用して可能な限り成形コストを抑え、かつ廃棄物を少なくするためにリサイクル処理されている。
例えば、特許文献1,2,3に見られるように、スプルランナーを粉砕機にて粉砕してリサイクル再生材料を形成し、このリサイクル再生材料をバージン材と混合して射出成形機に導入している。
特開平6−238665号公報 特開平8−207042号公報 特開2004−338358号公報
Usually, in the process of injection molding resin, unnecessary molded products that become runners are discharged separately from the molded products. This unnecessary molded product is referred to as a sprue runner, and is recycled as a molding material to reduce the molding cost as much as possible and to reduce waste.
For example, as seen in Patent Documents 1, 2, and 3, a sprue runner is pulverized by a pulverizer to form a recycled recycled material, and this recycled recycled material is mixed with a virgin material and introduced into an injection molding machine. Yes.
JP-A-6-238665 JP-A-8-207042 JP 2004-338358 A

しかしながら、特許文献1に記載の発明では、スプルランナーを粉砕してリサイクル再生材料とし、射出成形機の混合部への直前にバージン成形材と混合している。このため、混合部へは、いわゆる層状で供給されることになり、均一な混合ができているとはいえない。
また、特許文献2,3に記載の発明は、リサイクル再生材料とバージン成形材の供給量制御のために大掛かりな装置を必要とする。このため、高価な設備投資のわりには汎用性に乏しく、特定の原料配分専用の専用機としての使用に止まっている。
However, in the invention described in Patent Document 1, the sprue runner is pulverized into a recycled recycled material, which is mixed with the virgin molding material immediately before the mixing part of the injection molding machine. For this reason, it will be supplied to a mixing part in what is called a layer form, and it cannot be said that the uniform mixing is made.
Further, the inventions described in Patent Documents 2 and 3 require a large-scale apparatus for controlling the supply amounts of recycled recycled materials and virgin molded materials. For this reason, it is poor in versatility for expensive capital investment, and is only used as a dedicated machine dedicated to specific raw material distribution.

ところで、射出成形に用いる樹脂のバージン材及び粉砕材料は、通常、粉粒体形状で射出成形機ホッパーに供給されている。ところが、粉粒状の樹脂は吸湿しやすく、長時間粉粒状態で保持すると水分吸収量が多くなる。水分吸収量が多いと、加水分解を起す等、品質の低下に繋がる。そのため、射出成形に用いられる樹脂は、射出成形作業前に熱風式乾燥機,除湿乾燥機,真空乾燥機等で指定された温度・時間以上の乾燥を行っており、手間とコストがかかっている。
そこで、一般に、粉粒状樹脂の吸湿が進行しないような対策が採られているが、特許文献1〜3に記載の発明では、上記吸湿に対して考慮が払われているか否か定かでない。
By the way, a resin virgin material and a pulverized material used for injection molding are usually supplied to an injection molding machine hopper in the form of particles. However, the powdery resin is easy to absorb moisture, and if it is kept in a powdery state for a long time, the amount of moisture absorption increases. A large amount of moisture absorption leads to degradation of quality such as causing hydrolysis. Therefore, the resin used for injection molding is dried at a temperature and time or more specified by a hot-air dryer, dehumidifier dryer, vacuum dryer, etc. before the injection molding operation, which takes time and cost. .
Thus, generally, measures are taken so that moisture absorption of the granular resin does not proceed. However, in the inventions described in Patent Documents 1 to 3, it is not certain whether consideration is given to the moisture absorption.

また、上記特許文献1〜3に関係なく、一般に、リサイクル再生材料は全てを再利用するのではなく、一定量のみを再利用する場合が多い。これは、中間素材の利用者及び最終製品の利用者に対して安全が保障されたものを提供しなければならないという大前提が存在するためである。大量の廃棄物を排出することが非効率的だとか環境に悪影響を及ぼすだとかを論ずる以前の問題である。   Regardless of the above-mentioned Patent Documents 1 to 3, generally, recycled materials are not reused all, but often only a certain amount is reused. This is because there is a major premise that a safe product must be provided to users of intermediate materials and users of final products. This is a problem before discussing whether discharging large amounts of waste is inefficient or adversely affecting the environment.

本発明は、このような問題を解消すべく案出されたものであり、樹脂製品を射出成形する際に生成するスプルランナー粉砕材をバージン材と効率的に混合し、次工程に供給するための簡便な装置を提供することを目的とする。
さらには、吸湿しやすいスプルランナーを、射出成形機から排出された後、直ちに粉砕し、その粉砕材をバージン材と混合して射出成形機に送り込む装置を安価に提供することを目的とする。
The present invention has been devised to solve such a problem, and is for efficiently mixing the sprue runner pulverized material produced when injection molding a resin product with the virgin material and supplying it to the next step. An object of the present invention is to provide a simple apparatus.
It is another object of the present invention to provide an inexpensive apparatus that pulverizes a sprue runner that is likely to absorb moisture immediately after being discharged from an injection molding machine, mixes the pulverized material with a virgin material, and sends the pulverized material to the injection molding machine.

そして、本発明の軽量粉粒体の混合供給装置は、その目的を達成するため、複数種の軽量粉粒体を混合して利用装置に送出する混合供給装置であって、(a)下方絞り形状を有し、かつ側部に材料供給口を、上部に吸引装置連結口を、底部に円形の材料排出口をそれぞれ有する独立した複数のタンクと、(b)該各タンクの材料排出口の下部にそれぞれ傾斜して配置されたガイドと、(c)該各ガイド上、前記タンクの材料排出口との間にそれぞれ載置された前記材料排出口よりも径が太い軽量球状体と、(d)前記複数のタンクの下方絞り部を取り囲み、前記ガイド及び前記軽量球状体を収容したホッパーとを備え、(e)ホッパー下部の排出口が利用装置の原料供給口に連結されていることを特徴とする。   In order to achieve the object, the mixing and supplying apparatus for lightweight powder particles according to the present invention is a mixing and supplying apparatus for mixing a plurality of kinds of lightweight particles and sending them to a utilization device. A plurality of independent tanks each having a shape and having a material supply port on the side, a suction device connection port on the top, and a circular material discharge port on the bottom; and (b) a material discharge port of each tank. (C) a light-weight spherical body having a diameter larger than that of the material discharge port placed on each guide and between the material discharge port of the tank; and d) a hopper that surrounds the lower throttles of the plurality of tanks and contains the guide and the lightweight spherical body, and (e) the discharge port at the bottom of the hopper is connected to the raw material supply port of the utilization device. Features.

2個のタンクを有し、一方の材料供給口にバージン材の供給路が、他方の材料供給口にスプルランナー粉砕材の供給路が接続されて、射出成形機に送込む原料樹脂粉粒体の混合供給装置とすることができる。
この際、スプルランナー粉砕機が射出成形機近傍に配置されて、射出成形スプルランナーの粉砕材が直ちに他方のタンクの材料供給口に供給されるようにすることが好ましい。
また、一方のタンク材料供給口に接続されるバージン材供給路がホッパードライヤーに連接されていることが好ましい。
A raw material resin granule having two tanks, connected to one material supply port with a virgin material supply channel and the other material supply port with a sprulner pulverized material supply channel, and fed into an injection molding machine It can be set as a mixed supply apparatus.
At this time, it is preferable to arrange a sprue runner crusher in the vicinity of the injection molding machine so that the crushing material of the injection molded spru runner is immediately supplied to the material supply port of the other tank.
Moreover, it is preferable that the virgin material supply path connected to one tank material supply port is connected with the hopper dryer.

本発明装置により、樹脂を射出成形する際に生成する不要部分であるスプルランナーを効果的に再利用することができる。殊に金型設計段階で、成形時に生成するスプルランナーの量を予測し、成形製品に見合う量のバージン材を供給するようにすることが可能になり、環境に優しい物作りに貢献できる。
しかも、スプルランナーへの水分の吸収を抑制できるため、原料素材全てにバージン材料を使用した成形品とほぼ同等に近い特性を備えた射出成形品の製造も可能になる。
According to the apparatus of the present invention, a sprue runner that is an unnecessary part generated when resin is injection-molded can be effectively reused. Particularly in the mold design stage, it is possible to predict the amount of sprue runner generated during molding and supply an amount of virgin material suitable for the molded product, thereby contributing to the production of environmentally friendly products.
In addition, since absorption of moisture into the sprue runner can be suppressed, it is possible to manufacture an injection molded product having almost the same characteristics as a molded product using virgin materials for all raw materials.

本発明装置は、成形用樹脂原料に限らず、人の口に入る食品の取扱いに適用することもできる。この場合には、軽量球状体以外の構成材料を錆び難いステンレス鋼製にし、外観よりも内側を重視した構造に徹底して衛生面を高めたものとすることが好ましい。
例えば、もち米からなる餅を商品とした分野にあっても、商品として販売できない餅やクズが発生する場合がある。このような場合にあっても、商品以外のクズ等を取り出し、一定の処理を施した上で乾燥した後、所定の大きさに粉砕すれば、この粉砕物を、本発明装置を適用して適宜使用分野に供給することが可能になる。
このように、粉粒体の状態であれば、種類に関係なく、一定量の混合を機械化し、無駄をなくして衛生的に、かつ低コストで処理・供給することができる。
The device of the present invention is not limited to the resin material for molding, but can also be applied to the handling of food that enters the mouth of a person. In this case, it is preferable that the constituent material other than the lightweight spherical body is made of stainless steel which is not easily rusted, and the sanitary surface is thoroughly improved to a structure in which the inner side is more important than the appearance.
For example, even in a field where rice cake made of glutinous rice is used as a product, rice cake and scrap that cannot be sold as a product may occur. Even in such a case, if the scraps other than the product are taken out, dried after being subjected to a certain treatment, and then pulverized to a predetermined size, the pulverized product is applied to the apparatus of the present invention. It becomes possible to supply to the field of use as appropriate.
Thus, if it is in the state of a granular material, regardless of the type, a certain amount of mixing can be mechanized, and it can be processed and supplied hygienically and at low cost without waste.

本発明の軽量粉粒体の混合供給装置を、樹脂の射出成形時の原材料供給装置として用いた形態について説明する。
一般的な樹脂射出成形装置は、図1に示されるように、成形機本体Aと、成形機から排出されるスプルランナー粉砕機Bと、スプルランナー粉砕材とバージン材を混合する混合供給装置Cと、混合装置Cにバージン材を供給するホッパードライヤーDと、成形機に混合原料を供給する原料ホッパーEとを備えていることが普通である。
本発明の軽量粉粒体の混合供給装置は、上記のような樹脂射出成形装置の原料混合装置Cとして用いられる。
The form which used the mixing supply apparatus of the lightweight granular material of this invention as a raw material supply apparatus at the time of injection molding of resin is demonstrated.
As shown in FIG. 1, a general resin injection molding apparatus includes a molding machine main body A, a sprue runner grinding machine B discharged from the molding machine, and a mixing and feeding apparatus C that mixes the sprue runner grinding material and the virgin material. And a hopper dryer D for supplying the virgin material to the mixing device C and a raw material hopper E for supplying the mixed raw material to the molding machine.
The light and granular material mixing and supplying apparatus of the present invention is used as the raw material mixing apparatus C of the resin injection molding apparatus as described above.

そして、本発明の軽量粉粒体の混合供給装置は、図2に示されるように、下方絞り形状1−1,1−2を有し、かつ側部に材料供給口2−1,2−2を、上部に吸引装置連結口3−1,3−2を、底部に円形の材料排出口4−1,4−2をそれぞれ有する独立した2個のタンク5−1,5−2と、該各タンクの材料排出口の下部にそれぞれ傾斜して配置された2本の平行な棒状体からなるガイド6−1,6−2と、該各ガイド上、前記タンクの材料排出口との間にそれぞれ載置された前記材料排出口よりも径が太い軽量球状体7−1,7−2と、前記二個のタンクの下方絞り部1−1,1−2を取り囲み、ガイド6−1,6−2及び軽量球状体7−1,7−2を収容したホッパー8とを備え、ホッパー下部の排出口9が利用装置の原料供給口、すなわち射出成形機の原料ホッパーに連結されている。ホッパー8にガイド6−1,6−2及び軽量球状体7−1,7−2を収容する態様としては、ガイド6−1,6−2を固定し、当該ガイド6−1,6−2上に軽量球状体7−1,7−2を載せた態様の軽量球状体ケースが、ホッパー8の内側に内装されていることが好ましい。   And the mixing supply apparatus of the lightweight granular material of this invention has the downward aperture | diaphragm shape 1-1, 1-2 as FIG. 2 shows, and the material supply port 2-1 and 2- on a side part. 2, two independent tanks 5-1 and 5-2 having suction device connection ports 3-1 and 3-2 at the top and circular material discharge ports 4-1 and 4-2 at the bottom, Between the guide 6-1 and 6-2 which consist of two parallel rod-shaped bodies each inclined and arranged at the lower part of the material discharge port of each tank, and between the material discharge port of the tank on each guide The light bulbs 7-1 and 7-2 having a diameter larger than that of the material discharge port respectively placed on the lower side and the lower throttle parts 1-1 and 1-2 of the two tanks are surrounded, and the guide 6-1 6-2, and light weight spherical bodies 7-1 and 7-2, and a discharge port 9 at the bottom of the hopper is a raw material supply port of the utilization device That is connected to a raw material hopper of an injection molding machine. As an aspect in which the guides 6-1 and 6-2 and the lightweight spherical bodies 7-1 and 7-2 are accommodated in the hopper 8, the guides 6-1 and 6-2 are fixed, and the guides 6-1 and 6-2 are included. It is preferable that a lightweight spherical body case in which lightweight spherical bodies 7-1 and 7-2 are placed on the inside of the hopper 8 is provided.

なお、図2は、当該混合装置を左側面方向から見た形状を左側面図とし、右側面方向から見た形状を右側面図とするとともに、正面から見た形状を正面図として一つの図に同時に表記したものであり、図中8及び9で示すホッパー及び排出口は同一のものからなっている。
また、10は負圧吸引装置に繋がるパイプ、11−1,11−2は主切替弁、12−1,12−2は軽量球状体6−1,6−2の上方への移動を起動させる補助切替弁、13−1,13−2は独立タンク用フィルター、14−1,14−2はタンクの加圧とフィルター13−1,13−2の目詰まり防止を兼ねたエアーノズルである。さらに、ホッパー8側壁の前記軽量球状体7−1,7−2の当接箇所には円形の開口が設けられ、当該開口が前記補助切替弁12−1,12−2で開閉されるように構成されている。
2 is a left side view of the shape of the mixing device viewed from the left side direction, a right side view of the shape viewed from the right side direction, and a front view of the shape viewed from the front side. The hopper and the discharge port indicated by 8 and 9 in the figure are the same.
Further, 10 is a pipe connected to the negative pressure suction device, 11-1 and 11-2 are main switching valves, and 12-1 and 12-2 start upward movement of the lightweight spherical bodies 6-1 and 6-2. Auxiliary switching valves, 13-1 and 13-2 are filters for independent tanks, and 14-1 and 14-2 are air nozzles that serve to pressurize the tank and prevent clogging of the filters 13-1 and 13-2. Further, a circular opening is provided at a contact position of the lightweight spherical bodies 7-1 and 7-2 on the side wall of the hopper 8, and the opening is opened and closed by the auxiliary switching valves 12-1 and 12-2. It is configured.

なお、主切替弁11−1,11−2及び補助切替弁12−1,12−2の開閉動作は、エアー圧力を使用したソレノイドバルブでシリンダーを駆動させることによりなされる。
スプルランナー粉砕機Bをタンク5−1の材料供給口2−1に、バージン材を供給するホッパードライヤーDをタンク5−2の材料供給口2−2に連接させ、ホッパー8の排出口9を成形機の原料ホッパーEに接続した混合供給装置にあっては、その動作態様は、次のようになる。
In addition, the opening / closing operation | movement of the main switching valves 11-1 and 11-2 and the auxiliary switching valves 12-1 and 12-2 is made by driving a cylinder with a solenoid valve using air pressure.
The sprue pulverizer B is connected to the material supply port 2-1 of the tank 5-1, the hopper dryer D for supplying virgin material is connected to the material supply port 2-2 of the tank 5-2, and the discharge port 9 of the hopper 8 is connected. In the mixing and feeding apparatus connected to the raw material hopper E of the molding machine, the operation mode is as follows.

主切替弁11−1を開にしてタンク5−1の内部を吸引した状態で補助切替弁12−1を開にし、ホッパー8を密閉状態から開放状態にする。タンク5−1の内部が吸引されているのでタンク5−1の底部材料排出口4−1から大気が吸引されるのに伴って軽量球状体7−1をガイド6−1上で上方に移動させ、タンク5−1の材料排出口4−1を塞ぐ。この時点でタンク5−1内はより負圧状態となり、材料供給口2−1からスプルランナー粉砕材がタンク5−1内に吸い込まれる。この際、タンク5−1の上方、吸引装置連結口3−1にはフィルター13−1が取り付けられているので、タンク5−1内に吸引されたスプルランナー粉砕材が吸引装置連結口3−1に吸い込まれることはない。   The auxiliary switching valve 12-1 is opened while the main switching valve 11-1 is opened and the inside of the tank 5-1 is sucked, and the hopper 8 is changed from the sealed state to the opened state. Since the inside of the tank 5-1 is sucked, the lightweight spherical body 7-1 is moved upward on the guide 6-1 as the air is sucked from the bottom material discharge port 4-1 of the tank 5-1. The material discharge port 4-1 of the tank 5-1 is closed. At this time, the inside of the tank 5-1 is in a more negative pressure state, and the sprue runner pulverized material is sucked into the tank 5-1 from the material supply port 2-1. At this time, since the filter 13-1 is attached to the suction device connection port 3-1 above the tank 5-1, the sprue runner pulverized material sucked into the tank 5-1 is sucked into the suction device connection port 3-3. Never be sucked into one.

続いて、主切替弁11−2を開にしてタンク5−2の内部を吸引した状態で、補助切替弁12−2を開にして軽量球状体7−2のガイド6−2上での上方への移動を促し、タンク5−2の吸引と相俟ってタンク5−2の材料排出口4−2を塞ぐ。この時点でタンク5−2内はより負圧状態となり、材料供給口2−2からバージン材がタンク5−2内に吸い込まれる。この際、タンクの上方、吸引装置連結口3−2にはフィルター13−2が取り付けられているので、タンク内に吸引されたバージン材が吸引装置連結口3−2に吸い込まれることはない。   Subsequently, in a state where the main switching valve 11-2 is opened and the inside of the tank 5-2 is sucked, the auxiliary switching valve 12-2 is opened and the lightweight spherical body 7-2 is moved upward on the guide 6-2. The material discharge port 4-2 of the tank 5-2 is blocked together with the suction of the tank 5-2. At this time, the inside of the tank 5-2 is in a more negative pressure state, and the virgin material is sucked into the tank 5-2 from the material supply port 2-2. At this time, since the filter 13-2 is attached to the suction device connection port 3-2 above the tank, the virgin material sucked into the tank is not sucked into the suction device connection port 3-2.

次に、所定時間吸引してスプルランナー粉砕材及びバージン材をタンク内に吸い込んだ後に、補助切替弁12−1,12−2を閉状態に戻し、その後に主切替弁11−1,11−2を閉にするとともに、タンク加圧用エアーノズル14−1,14−2を作動させる。この操作・作動でタンク5−1,5−2内の負圧を解消し、上部よりエアー圧力を加えることにより、軽量球状体7−1,7−2の弁作用が解除され、軽量球状体7−1,7−2はガイド6−1,6−2に沿って所定位置に戻る(図3参照)。
なお、主切替弁11−1,11−2を閉じる前に補助切替弁12−1,12−2の閉操作を行わないと、開放口からの大気の流入・排出によってホッパー8内の粉粒材料が散乱され、場合によっては、開放口から粉粒材料が飛散することがある。
Next, after sucking for a predetermined time and sucking the sprue runner pulverized material and virgin material into the tank, the auxiliary switching valves 12-1, 12-2 are returned to the closed state, and then the main switching valves 11-1, 11- 2 is closed and the tank pressurizing air nozzles 14-1 and 14-2 are operated. By this operation and operation, the negative pressure in the tanks 5-1 and 5-2 is eliminated, and the air pressure is applied from the top, so that the valve action of the lightweight spherical bodies 7-1 and 7-2 is released, and the lightweight spherical body 7-1 and 7-2 return to predetermined positions along the guides 6-1 and 6-2 (see FIG. 3).
If the auxiliary switching valves 12-1 and 12-2 are not closed before the main switching valves 11-1 and 11-2 are closed, the particles in the hopper 8 are caused by the inflow / discharge of air from the opening. The material is scattered, and in some cases, the granular material may scatter from the opening.

タンク5−1,5−2内の負圧状態が解消されると、タンク5−1,5−2内に吸い込まれた粉粒体は上部のタンク加圧用エアーノズル14−1,14−2からのエアー圧力及び自重でホッパー8内に落下する。この際、図3に見られるように、落下する2種の粉粒体Mは軽量球状体7−1,7−2に当って落下方向が変えられ、混合されることになる。2種の粉粒体、すなわちスプルランナー粉砕材及びバージン材は混合層となってホッパー8の底部に溜まり、その排出口9から適宜成形機の原料ホッパーEに送給される。   When the negative pressure state in the tanks 5-1 and 5-2 is eliminated, the powder particles sucked into the tanks 5-1 and 5-2 are the upper tank pressurizing air nozzles 14-1 and 14-2. It falls into the hopper 8 by the air pressure and dead weight from the hopper 8. At this time, as seen in FIG. 3, the two types of falling powder particles M hit the lightweight spherical bodies 7-1 and 7-2 to change the falling direction and are mixed. The two types of powder particles, that is, the sprue runner pulverized material and the virgin material, are mixed and collected at the bottom of the hopper 8, and are appropriately fed from the discharge port 9 to the raw material hopper E of the molding machine.

なお、タンク5−1,5−2内に供給されるスプルランナー粉砕材及びバージン材の供給量は、負圧吸引装置に設けられたプログラマブルコントローラーによりタンクの負圧吸引時間をプログラム化された時間で調整される。すなわち、スプルランナー粉砕材とバージン材の混合割合は、主切替弁11−1,11−2を開閉させるタイミングの設定によりなされる。後に詳記するように、金型の形状等によるスプルランナーの生成量に応じて、上記スプルランナー粉砕材とバージン材の混合割合を自動的に調整する。場合によっては、スプルランナーを廃棄することなく全量を使用することも可能である。   The supply amount of the sprue runner pulverized material and the virgin material supplied into the tanks 5-1 and 5-2 is the time when the negative pressure suction time of the tank is programmed by the programmable controller provided in the negative pressure suction device. It is adjusted with. That is, the mixing ratio of the sprue runner pulverized material and the virgin material is determined by setting the timing for opening and closing the main switching valves 11-1 and 11-2. As will be described in detail later, the mixing ratio of the sprue runner pulverized material and the virgin material is automatically adjusted in accordance with the amount of sprue runner generated due to the shape of the mold. In some cases, the entire amount can be used without discarding the sprue runner.

このように、本発明の混合供給装置にあっては、タンク材料排出口の下部に配置した軽量球状体に当該排出口を塞ぐ弁の作用と、落下する粉粒体の流れを変えて複数種の軽量粉粒体の混合させる作用を兼ねさせている。個々の独立したタンクでの吸引により容易に移動して材料排出口に吸着してタンク内を密閉状態にするとともに、密閉状態が解除されると瞬時にして材料を排出させる弁作用を持たせるとともに、落下する軽量粉粒体の落下方向を変えさせる軽量球状体としては、空気の流れに敏感であり、しかも被混合材料である軽量粉粒体に対しての耐摩耗性と耐衝撃性に優れ、方向性がないものを用いることが好ましい。この意味からも、合成樹脂からなる中空球状体を用いることが好ましい。   As described above, in the mixing and supplying apparatus of the present invention, a plurality of types are obtained by changing the action of the valve closing the discharge port on the lightweight spherical body arranged at the lower part of the tank material discharge port and the flow of the falling granular material. It also has the effect of mixing the lightweight powder particles. It moves easily by suction in each individual tank and adsorbs to the material discharge port to seal the inside of the tank, and has a valve action to discharge the material instantly when the sealed state is released As a lightweight spherical body that changes the falling direction of the falling lightweight granular material, it is sensitive to the air flow and has excellent wear resistance and impact resistance against the lightweight granular material that is a mixed material It is preferable to use one having no directionality. Also in this sense, it is preferable to use a hollow sphere made of a synthetic resin.

断面円形の排出口を下方から当接させる軽量球状体からなる弁で開閉するように構成することにより、弁を開くと同時に排出口全体を開放して、タンク内に溜められた軽量粉粒体を瞬時に落下させることができる。また、弁を開閉させる付属機器類等がないので、開閉機構に粉粒体が詰って開閉動作を妨げるようなことはない。タンク内空気圧の調整のみで、円滑に開閉動作を行うことができる。
材料替えの際の清掃等も容易に行え、混合供給装置そのものの汎用性が向上する。
By opening and closing the valve with a valve made of a lightweight spherical body that makes the discharge port with a circular cross section abut from below, the entire discharge port is opened at the same time as the valve is opened, and the lightweight granular material stored in the tank Can be dropped instantly. In addition, since there is no attached device or the like for opening and closing the valve, the opening and closing mechanism is not clogged with powder particles so that the opening and closing operation is not hindered. Opening and closing operations can be performed smoothly only by adjusting the air pressure in the tank.
Cleaning at the time of material change can be easily performed, and the versatility of the mixing and feeding apparatus itself is improved.

次に、成形機本体Aと、成形機から排出されるスプルランナー粉砕機Bと、スプルランナー粉砕材とバージン材を混合する混合供給装置Cと、混合供給装置Cにバージン材を供給するホッパードライヤーDと、成形機に混合原料を供給する原料ホッパーEとを備えている射出成形装置において、本発明の混合供給装置を使用するとともに、スプルランナー粉砕機B及びホッパードライヤーDの設置位置を調整して、原料樹脂の吸湿を抑制し、品質に優れた射出成形品を効率的に製造する態様について説明する。   Next, the molding machine main body A, the sprue runner crusher B discharged from the molding machine, the mixing supply device C for mixing the sprue runner grinding material and the virgin material, and the hopper dryer for supplying the mixing supply device C with the virgin material In the injection molding apparatus equipped with D and a raw material hopper E for supplying the mixed raw material to the molding machine, the mixing supply apparatus of the present invention is used and the installation positions of the sprue runner crusher B and the hopper dryer D are adjusted. An aspect of efficiently producing an injection molded product that suppresses moisture absorption of the raw material resin and has excellent quality will be described.

図1に示すように、成形機本体Aの近傍に、図4に示されるスプルランナー粉砕機と、図5に示されるホッパードライヤーと、本請求項1の混合供給装置が備えられている。
スプルランナー粉砕機は、スプルランナーカウント装置を付設した装入口21と、その内部に破砕ロータ22と、下部に粉砕材料タンク23を備えている。粉砕材料タンクの下部に設けた粉砕材料出口24が、前記混合供給装置のタンク5−1の材料供給口2−1に繋げられている。
スプルランナー粉砕材の吸湿を抑制する意味でも、スプルランナー粉砕機及び混合供給装置は、成形機本体に近接して配置することが好ましい。
As shown in FIG. 1, in the vicinity of the molding machine main body A, the sprue runner pulverizer shown in FIG. 4, the hopper dryer shown in FIG. 5, and the mixing and feeding apparatus of claim 1 are provided.
The sprue runner pulverizer includes a loading port 21 provided with a sprue runner counting device, a crushing rotor 22 inside, and a crushing material tank 23 in the lower part. A pulverized material outlet 24 provided at the lower part of the pulverized material tank is connected to a material supply port 2-1 of the tank 5-1 of the mixing and supplying apparatus.
In order to suppress moisture absorption of the sprue runner pulverized material, the sprue runner pulverizer and the mixing / feeding device are preferably arranged close to the molding machine main body.

ホッパードライヤーは、ヒーター類を内蔵し、送風機から送風された空気を加熱して乾燥タンク26に熱風を送り込みコントロールボックス25,熱風を排気する排気口27及び乾燥材料落下出口28を備え、乾燥材料落下出口28の下部に設けたバージン材出口29が前記混合供給装置のタンク5−2の材料供給口2−2にパイプ30で繋げられている。なお、タンク5−2内を吸引したとき、バージン材の流動を行いやすくするために、連結パイプ30の前記バージン材出口29側に吸気口31を設けることが好ましい。
ところで、ホッパードライヤーはバージン材に含有されている水分を除去するために加熱されているため、周辺の温度・湿度が高くなりやすい。周辺の温度・湿度が高くなると、作業環境を悪化させる。このため、このホッパードライヤーは、射出成形装置付近より離し、別室に配置することが好ましい。
The hopper dryer incorporates heaters, and includes a control box 25 that heats the air blown from the blower and sends hot air to the drying tank 26, an exhaust port 27 that exhausts the hot air, and a dry material drop outlet 28. A virgin material outlet 29 provided at a lower portion of the outlet 28 is connected by a pipe 30 to a material supply port 2-2 of the tank 5-2 of the mixing supply device. In order to facilitate the flow of the virgin material when the inside of the tank 5-2 is sucked, it is preferable to provide the intake port 31 on the virgin material outlet 29 side of the connection pipe 30.
By the way, since the hopper dryer is heated to remove moisture contained in the virgin material, the surrounding temperature and humidity are likely to increase. If the ambient temperature / humidity increases, the working environment will deteriorate. For this reason, it is preferable that this hopper dryer is separated from the vicinity of the injection molding apparatus and disposed in a separate chamber.

本発明の混合供給装置を用い、他の機器を好ましく配置した射出成形機にあっては、ホッパードライヤーで乾燥される樹脂がバージン材のみになるため、ホッパードライヤーの容量は、混合材料を乾燥していたときと比べて約半分にまで小さくすることができ、電力消費量も少なくすることができる。なお、本発明による混合供給装置そのものが、吸引装置を用いて粉粒体を移動・供給させているので、ホッパードライヤーを別室に配置し、ホッパードライヤーと混合供給装置間を10数m離しても、粉粒体の安定供給そのものにはほとんど影響しない。   In an injection molding machine that uses the mixing and feeding apparatus of the present invention and other devices are preferably arranged, since the resin to be dried by the hopper dryer is only virgin material, the capacity of the hopper dryer is to dry the mixed material. It can be reduced to about half compared to when it was, and power consumption can also be reduced. In addition, since the mixing supply apparatus itself by this invention moves and supplies a granular material using a suction device, even if it arrange | positions a hopper dryer in another room and separates a hopper dryer and a mixing supply apparatus by several 10 m. It has little effect on the stable supply of powder.

混合供給装置により混合された粉粒体原料は、図6に示される原料ホッパーを経て、射出成形機の材料供給口32に供給される。混合供給装置においても、ホッパー8の底部に溜まったスプルランナー粉砕材とバージン材は混合されているが、吸引作用を利用して材料を移動させることにより、原料ホッパーに送給される段階でより均一に混合されることになる。   The granular material mixed by the mixing and supplying apparatus is supplied to the material supply port 32 of the injection molding machine through the raw material hopper shown in FIG. Even in the mixing and feeding apparatus, the sprue runner pulverized material and the virgin material collected at the bottom of the hopper 8 are mixed, but at the stage of being fed to the raw material hopper by moving the material using the suction action. It will be mixed uniformly.

そして、原料ホッパーは、側部に完全混合材料入口33と、上部に吸引口34と、下部に前記射出成形機の材料供給口32に繋がる検視連結管35と、当該検視連結管の側部にセンサー36を備えている。そして、完全混合材料入口33は、前記混合供給装置の排出口9と繋げられている。なお、上部の吸引口34にもフィルターが取り付けられている。
一部透明材料からなる検視連結管35の側部に設けるセンサー36としては、静電容量型センサーでも透過型センサーでもよい。
なお、図6中、37は射出成形機の加熱筒内のスクリューである。
The raw material hopper has a completely mixed material inlet 33 on the side, a suction port 34 on the upper side, an inspection connecting pipe 35 connected to the material supply port 32 of the injection molding machine on the lower side, and a side of the inspection connecting pipe. A sensor 36 is provided. The completely mixed material inlet 33 is connected to the outlet 9 of the mixing and feeding apparatus. A filter is also attached to the upper suction port 34.
The sensor 36 provided on the side portion of the inspection connecting tube 35 made of a partially transparent material may be a capacitance type sensor or a transmission type sensor.
In FIG. 6, reference numeral 37 denotes a screw in a heating cylinder of the injection molding machine.

近年、射出成形機では、1ショットの重量及び1ショットに要する時間に対してほとんど誤算が生じないように、重量制御、時間制御がなされている。そして、製品重量に応じて、要したショット数,要した時間,スプルランナー生成量,原材料使用量等を正確に計算することができるようになっている。
上記のようなバージン材及びスプルランナー粉砕材使用量のデータを、成形製品に応じてプログラム化し、そのソフトにしたがって本発明の混合供給装置を作動させると、必要な量のスプルランナー粉砕材とバージン材の混合が容易に行われ、完全に混合された射出成形原料を成形機ホッパーに供給することが可能になる。
In recent years, weight control and time control are performed in an injection molding machine so that almost no miscalculation occurs with respect to the weight of one shot and the time required for one shot. And according to the product weight, the number of shots required, the time required, the amount of sprue runner generation, the amount of raw material used, etc. can be accurately calculated.
When the above virgin material and sprue runner pulverized material usage data is programmed according to the molded product and the mixing and feeding device of the present invention is operated in accordance with the software, the required amount of sprung runner crushed material and virgin The materials can be easily mixed, and the completely mixed injection molding raw material can be supplied to the molding machine hopper.

射出成形装置の構造及び材料の流れを概略的に説明する図Diagram for schematically explaining the structure and material flow of an injection molding apparatus 本発明混合供給装置の構造を概略的に説明する図The figure which illustrates roughly the structure of this invention mixing supply apparatus 軽量球状体がタンクの材料排出口からはずれ、粉粒体がタンクから排出されるときの落下態様を説明する図The figure explaining a fall mode when a lightweight spherical body comes off from the material discharge port of a tank, and a granular material is discharged from a tank. スプルランナー粉砕機の構造を概略的に説明する図Diagram schematically illustrating the structure of the sprue runner crusher ホッパードライヤーの構造を概略的に説明する図The figure which explains the structure of the hopper dryer roughly 成形機ホッパーの構造を概略的に説明する図Diagram for schematically explaining the structure of the molding machine hopper

Claims (4)

複数種の軽量粉粒体を混合して利用装置に送出する混合供給装置であって、
(a)下方絞り形状を有し、かつ側部に材料供給口を、上部に吸引装置連結口を、底部に円形の材料排出口をそれぞれ有する独立した複数のタンクと、
(b)該各タンクの材料排出口の下部にそれぞれ傾斜して配置されたガイドと、
(c)該各ガイド上、前記タンクの材料排出口との間にそれぞれ載置された前記材料排出口よりも径が太い軽量球状体と、
(d)前記複数のタンクの下方絞り部を取り囲み、前記ガイド及び前記軽量球状体を収容したホッパーとを備え、
(e)ホッパー下部の排出口が利用装置の原料供給口に連結されていることを特徴とする軽量粉粒体の混合供給装置。
A mixing and feeding device for mixing a plurality of types of lightweight powders and feeding them to a utilization device,
(A) a plurality of independent tanks each having a downward throttle shape and having a material supply port on the side, a suction device connection port on the top, and a circular material discharge port on the bottom;
(B) a guide disposed at an angle below the material discharge port of each tank;
(C) a lightweight spherical body having a diameter larger than that of the material discharge port, which is placed between each of the guides and the material discharge port of the tank;
(D) surrounding a lower throttle portion of the plurality of tanks, and comprising a hopper containing the guide and the lightweight spherical body,
(E) A lightweight powder mixture supply device, wherein the discharge port at the lower part of the hopper is connected to the raw material supply port of the utilization device.
2個のタンクを有し、一方の材料供給口に射出成形用原材料の供給路が、他方の材料供給口に射出成形スプルランナー粉砕材の供給路が接続されている請求項1に記載の軽量粉粒体の混合供給装置。   2. The light weight according to claim 1, comprising two tanks, wherein one material supply port is connected to an injection molding raw material supply channel, and the other material supply port is connected to an injection molded sprue runner pulverized material supply channel. Powder mixing device. スプルランナー粉砕機が射出成形機近傍に配置されて、射出成形スプルランナーの粉砕材が直ちに他方の材料供給口に供給される請求項2に記載の軽量粉粒体の混合供給装置。   The light-weight granule mixing and feeding device according to claim 2, wherein the sprue pulverizer is disposed in the vicinity of the injection molding machine, and the pulverized material of the injection-molded sprue runner is immediately supplied to the other material supply port. 一方の材料供給口に接続される射出成形用原材料供給路がホッパードライヤーに連接されている請求項2又は3に記載の粉粒体の混合供給装置。   4. The mixing and supplying apparatus for a granular material according to claim 2, wherein an injection molding raw material supply path connected to one of the material supply ports is connected to a hopper dryer.
JP2005294733A 2005-10-07 2005-10-07 Light-weight powder mixing device Active JP4702941B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005294733A JP4702941B2 (en) 2005-10-07 2005-10-07 Light-weight powder mixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005294733A JP4702941B2 (en) 2005-10-07 2005-10-07 Light-weight powder mixing device

Publications (2)

Publication Number Publication Date
JP2007098884A true JP2007098884A (en) 2007-04-19
JP4702941B2 JP4702941B2 (en) 2011-06-15

Family

ID=38026292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005294733A Active JP4702941B2 (en) 2005-10-07 2005-10-07 Light-weight powder mixing device

Country Status (1)

Country Link
JP (1) JP4702941B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009297672A (en) * 2008-06-16 2009-12-24 Kojima Press Industry Co Ltd Particulate mixing apparatus
CN110483218A (en) * 2019-08-19 2019-11-22 浏阳市真工机械制造有限公司 A kind of all-in-one machine of the intelligent mixing automatically of black powder, upper damp, die-filling film-making
CN111715882A (en) * 2020-05-14 2020-09-29 东莞市华研新材料科技有限公司 Metal injection molding device with waste recovery mechanism
CN114642980A (en) * 2022-02-28 2022-06-21 深圳市凯盛科技工程有限公司 Rotary feeding machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04278308A (en) * 1991-03-06 1992-10-02 Wako Kasei Kogyo Kk Method and device for mixing molding material
JPH04113916U (en) * 1991-03-22 1992-10-06 株式会社明星金属工業所 Automatic raw material supply system equipment for injection molding machines
JPH06238665A (en) * 1993-02-16 1994-08-30 Sankyo Kasei Co Ltd Recycle device in resin molding
JPH08207042A (en) * 1995-02-08 1996-08-13 Olympus Optical Co Ltd Method and apparatus for weighing and mixing plastic resin pellet
JPH10156831A (en) * 1996-11-27 1998-06-16 Kubota Karaatoronitsuku Kk Raw material transporting apparatus
JP2004338358A (en) * 2003-05-16 2004-12-02 Matsui Mfg Co Apparatus for metering and mixing granular matter and metering damper apparatus used for it

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04278308A (en) * 1991-03-06 1992-10-02 Wako Kasei Kogyo Kk Method and device for mixing molding material
JPH04113916U (en) * 1991-03-22 1992-10-06 株式会社明星金属工業所 Automatic raw material supply system equipment for injection molding machines
JPH06238665A (en) * 1993-02-16 1994-08-30 Sankyo Kasei Co Ltd Recycle device in resin molding
JPH08207042A (en) * 1995-02-08 1996-08-13 Olympus Optical Co Ltd Method and apparatus for weighing and mixing plastic resin pellet
JPH10156831A (en) * 1996-11-27 1998-06-16 Kubota Karaatoronitsuku Kk Raw material transporting apparatus
JP2004338358A (en) * 2003-05-16 2004-12-02 Matsui Mfg Co Apparatus for metering and mixing granular matter and metering damper apparatus used for it

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009297672A (en) * 2008-06-16 2009-12-24 Kojima Press Industry Co Ltd Particulate mixing apparatus
CN110483218A (en) * 2019-08-19 2019-11-22 浏阳市真工机械制造有限公司 A kind of all-in-one machine of the intelligent mixing automatically of black powder, upper damp, die-filling film-making
CN110483218B (en) * 2019-08-19 2024-04-26 浏阳市真工机械制造有限公司 Intelligent automatic mixing, dampening and die filling tablet-making integrated machine for black powder
CN111715882A (en) * 2020-05-14 2020-09-29 东莞市华研新材料科技有限公司 Metal injection molding device with waste recovery mechanism
CN114642980A (en) * 2022-02-28 2022-06-21 深圳市凯盛科技工程有限公司 Rotary feeding machine

Also Published As

Publication number Publication date
JP4702941B2 (en) 2011-06-15

Similar Documents

Publication Publication Date Title
EP1818637B1 (en) Dehumidification method and plant, particularly for granular materials
JP5130338B2 (en) Discharge device for particulate material and transportation system for particulate material provided with the same
KR100945567B1 (en) Vacuum dryer
CA2595928A1 (en) Device for filling an extruder with pretreated thermoplastic material
JP4702941B2 (en) Light-weight powder mixing device
CN209109135U (en) Twin shaft pair roller type Squeezinggranulator
CN105423704A (en) Dust-free production system for granulating high-viscosity material
CN106491366A (en) Automatically granulation dries whole grain mixture manufacturing line to integrated form
CN105291341B (en) Full-automatic intermittent formula prefoaming machine
CN204955193U (en) Material dust removal device
JP3208382U (en) Drying equipment
KR101953999B1 (en) Pellet manufacturing apparatus for animal feeds
CN106440711A (en) Full-automatic pelleting, drying and neatening integrated machine for integrated-type laboratories
CN106440710A (en) Integrated full-automatic pelleting, drying, sizing and mixing all-in-one machine for laboratory
CN207147088U (en) One kind injection particle drying device
CN205279610U (en) Dustless production system of high viscosity material pelletization
CN211205489U (en) Be applied to weightless balance of carbon fiber granule production and processing
CN209987227U (en) Quick drying device for particle materials
JP6198482B2 (en) Pneumatic transportation device and pneumatic transportation method
CN107238271A (en) A kind of paddy delays the implementation method of drop formula hot-air drying device
JP2012240246A (en) Granular material supply system
KR101805980B1 (en) Apparatus for removing impurities from plastic resin
CN204574005U (en) A kind of agriculture and forestry organic waste material biological particles combustion apparatus
CN204574003U (en) A kind of biomass particle combustion apparatus
JP4614525B2 (en) Granular material feeder

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080613

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080618

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110224

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110302

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110307

R150 Certificate of patent or registration of utility model

Ref document number: 4702941

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250