JP2004322132A

JP2004322132A - Rotary compression molding machine

Info

Publication number: JP2004322132A
Application number: JP2003118625A
Authority: JP
Inventors: Yasuharu Imamura; 康晴今村; Shoichi Kimura; 祥一木村; Akinori Amamoto; 明典天本; Keiji Shimada; 啓司島田; Yoshiji Oneda; 好次小根田
Original assignee: Kikusui Seisakusho Ltd; Nitto Denko Corp
Current assignee: Kikusui Seisakusho Ltd; Nitto Denko Corp
Priority date: 2003-04-23
Filing date: 2003-04-23
Publication date: 2004-11-18
Anticipated expiration: 2023-04-23
Also published as: JP4559709B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary compression molding machine with which various but production-limited compression moldings are efficiently manufactured. <P>SOLUTION: This machine is provided with an operating mechanism by which a plurality of lower beetles 30 are selectively operated in the fixing state where the beetles are respectively fixed in the top dead center in spite of the revolving motion of the lower beetles and in the operating state where the beetles are vertically movable in accordance with the revolving motion of the lower beetles, a guiding mechanism 50 with which the lower beetles are vertically moved between the top dead center where the upper end part is approximately equal to the opening at the upper end of a mortar part 11 and the bottom dead center where the upper end part is situated in a prescribed lower position within the mortar part, driven members 33 for pulling down the lower beetle 33 which is a driven member provided attachably and detachably in the lower end part 32 of the lower beetle and has projecting part and a guiding member with which the lower beetles are guided from the top dead center to the bottom dead center by moving the projecting part of the driven member along the guide part which is engaged with the projecting part of the driven member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、粉末等の被成形材料を圧縮成形するための回転圧縮成形機に関する。
【０００２】
【従来の技術】
垂直回転軸周りに水平回転駆動される回転体であって、周方向に沿った複数の臼部を有する回転体と、前記臼部の上方開口及び下方開口からそれぞれ上下動可能に挿入された上杵及び下杵とを備え、該上杵及び下杵によって前記臼部内に充填された粉末等の被成形材料を圧縮成形する回転圧縮成形機は、半導体封止用エポキシ樹脂の成形等の種々の分野に使用されている。
【０００３】
ところで、従来の回転圧縮成形機は、圧縮成型品の外径を変更する場合には、現在装着されている臼部，上杵及び下杵を交換しなければならず、少量多形状の製造には不適であるという問題があった。
【０００４】
即ち、前記回転圧縮成形機においては、前記臼部の内径と該臼部に挿入される上杵及び下杵の直径とによって、圧縮成型品の外径が画される。
従って、直径Ｘ１ｍｍの圧縮成型品を製造している状態から直径Ｘ２ｍｍの圧縮成型品を製造する状態に仕様変更する場合には、Ｘ１ｍｍに対応した一の臼部，一の上杵及び一の下杵をＸ２ｍｍに対応した他の臼部，他の上杵及び他の下杵に交換する必要があるが、斯かる交換は、通常、前記下杵と係合し該下杵の上下動を案内する案内機構の一部を取り外さなければならず、非常に面倒な作業となる。
【０００５】
このように、従来の回転圧縮成形機は、斯かる仕様変更に対して十分な配慮がなされておらず、その結果、少量多形状の製造に不向きであった。
【０００６】
【発明が解決しようとする課題】
本発明は、斯かる従来技術に鑑みなされたものであり、一の形状の圧縮成型品を製造する状態から他の形状の圧縮成型品を製造する状態への仕様変更を容易に行うことができる回転圧縮成形機の提供を、一つの目的とする。
【０００７】
【課題を解決するための手段】
本発明は、前記目的を達成するために、垂直回転軸周りに水平回転される回転体であって、周方向に沿って複数の臼部が設置可能とされた回転体と、前記複数の臼部に対してそれぞれ上方から上下動可能に挿入される複数の上杵であって、前記回転体の水平回転と同期して前記垂直回転軸周りに公転する複数の上杵と、前記複数の臼部に対してそれぞれ下方から上下動可能に挿入される複数の下杵であって、前記回転体の水平回転に連動して前記垂直回転軸周りに公転する複数の下杵と、前記複数の上杵を、それぞれ、該上杵の下端部が前記臼部の上方に位置する上死点から該上杵の下端部が前記臼部内に位置する下死点へ押動する上杵加圧機構と、前記回転体の下方に配設された案内機構であって、前記下杵の公転に応じて、該下杵を、上端部が前記臼部の上端開口と略同一となる上死点と、上端部が前記臼部内における所定の下方位置に位置する下死点との間で上下動させる案内機構と、前記回転体を挟んで前記上杵加圧機構と対向するように配設され、前記下杵を上方へ押動する下杵加圧機構と、前記複数の下杵のそれぞれを、該下杵の公転運動に拘わらず上死点に固定する固定状態と、該下杵の公転運動に応じて前記上下動が可能な作動状態とに選択操作する操作機構と、前記下杵の下端部に着脱可能に設けられる従動部材であって、該下杵の下端部から径方向外方に突出した突出部を有する下杵引き下げ用従動部材と、該下杵引き下げ用従動部材を装着した前記下杵の該従動部材の前記突出部と係合する係合部を有し、該係合部が前記下杵の公転運動に応じて前記従動部材突出部と係合しつつ該係合部に沿って該従動部材突出部を移動させることで前記下杵を上死点から下死点へ移動させる係合部材とを具備し、前記係合部材は、前記係合部の前記従動部材突出部との係合領域最上流側端位置の高さが前記下杵の上死点位置での前記従動部材突出部高さと略同一又は該従動部材突出部高さよりも上方に位置するように構成されている回転圧縮成形機を提供する。
【０００８】
本発明に係る回転圧縮成形機によると、複数の下杵のそれぞれを選択的に上死点に固定する固定状態と、上下動可能な作動状態とに操作する操作機構を備えている為、該操作機構によって不要な形状及び／又は外径に対応した下杵を固定状態とし、且つ、該不要な下杵に対応した上杵を取り外すという簡単な作業によって、所望の形状及び／又は外径の圧縮成形品を得ることができる。
従って、単一の回転圧縮成形機によって少量多種の圧縮成形品を極めて効率的に製造することができる。
また、固定状態とされた下杵は、上端部が前記臼部の上端開口と略同一となる上死点に固定される為、該固定状態の下杵に対応した臼部内に被成形材料が充填されるという不都合も生じない。従って、キャップ等の追加部材を備えることなく、被成形材料の無駄を有効に防止できる。
【０００９】
さらに、前記係合部材が設けられるとともに、これに係合される前記下杵引き下げ用従動部材が前記下杵の下端部に着脱可能に設けられるので、前記操作機構を前記下杵の公転運動に応じて前記上下動が可能な作動状態に選択操作する際は、前記下杵に前記下杵引き下げ用従動部材を装着すれば、前記案内機構による前記下杵の公転に応じた前記案内動作が良好に行われる。また前記操作機構を前記下杵の公転運動に拘わらず上死点に固定する固定状態に選択操作する際は、前記下杵から前記下杵引き下げ用従動部材を離脱すればよい。このように本発明に係る回転圧縮成形機によると、前記係合部材を設けるとともに前記下杵引き下げ用従動部材を前記下杵の下端部に着脱可能に設けるといった簡単な構成で、前記案内機構による前記案内動作を良好に行うことができる。
【００１０】
前記案内機構は、前記下杵引き下げ用従動部材を装着した前記下杵の公転方向に沿って、該下杵を上死点に位置させる最上部と、前記下杵を最上部から下方へ案内する下降部と、前記下杵を所定の分量位置に保持する分量部と、前記下杵を再び前記最上部へ移行させる押上部とを有する案内面を備えていてもよい。この場合、前記係合部材の係合部は、前記案内面の下降部との共働下に前記下杵引き下げ用従動部材の突出部を狭持し得る。
【００１１】
前記下杵引き下げ用従動部材としては、直径が上下方向略中央位置から上方向及び下方向に向かって次第に小さくなっている断面六角形状の算盤玉状のものを例示できる。この場合、前記係合部材は、好ましくは、前記係合部の前記従動部材突出部との係合領域最上流側端位置の高さが前記下杵の上死点位置での前記下杵引き下げ用従動部材の前記上下方向略中央位置高さと略同一又は該位置高さよりも上方に位置する。こうすることで、前記従動部材突出部の上面が前記係合部に沿って良好に移動することができ、また、前記案内機構が前記下降部を有する案内面を備えている場合には、前記従動部材突出部の上面が前記係合部に沿うとともに下面が前記下降部に沿って移動することができるので、いずれにしても前記下杵引き下げ用従動部材を良好に移動させることができる。
【００１２】
本発明に係る回転圧縮成形機において、前記操作機構は、前記複数の下杵のそれぞれに対応して設けられた複数の操作部材であって、対応する前記下杵と係合して該下杵を上死点に固定する固定位置と、対応する前記下杵との係合を解除して該下杵を上下動可能とする作動位置とをとり得る操作部材を有していてもよい。この場合、前記下杵は、前記操作部材が固定位置に位置する際に、該操作部材の少なくとも一部が係入される保持凹部を有していることが好ましい。
【００１３】
【発明の実施の形態】
以下、本発明に係る回転圧縮成形機の好ましい実施の形態について、添付図面を参照しつつ説明する。
図１に、本実施の形態に係る回転圧縮成形機１の展開縦断面図を示す。
【００１４】
前記回転圧縮成形機１は、図１に示すように、垂直回転軸（図示せず）周りに水平に駆動回転される回転体１０と、前記回転体１０の上方に上下動可能に配設された複数の上杵２０と、前記回転体１０の下方に上下動可能に配設された複数の下杵３０と、前記複数の上杵２０をそれぞれ下方へ押動する上杵加圧機構４０と、前記複数の下杵３０をそれぞれ案内する案内機構５０と、前記複数の下杵をそれぞれ上方へ押動する下杵加圧機構６０とを備えている。
なお、図１中右方に示す矢印は回転体１０の回転方向を示している。
【００１５】
斯かる回転圧縮成形機１は、前記回転体１０に周方向に沿って設置される臼部１１内に充填した粉末等の被成形材料を前記上杵２０及び下杵３０により狭圧して圧縮成型品を製造する為に使用される。
なお、該回転圧縮成形機１は、半導体封止用エポキシ樹脂成形品や薬剤、入浴剤、ボタン電池、菓子類等の種々の圧縮成形品の製造に使用できる。
【００１６】
前記回転体１０は、前述の通り、周方向に沿って複数の臼部１１が設置可能とされている。
詳しくは、前記回転体１０は、周方向に沿った複数の貫通孔１２を有している。該貫通孔１２は該回転体１０の上方及び下方に開口しており、所望内径の臼部１１を着脱可能に設置し得るようになっている。
【００１７】
本実施の形態においては、図１に示すように、前記回転体１０には、周方向に沿って交互に、第１内径（Ｘ１ｍｍ）の第１臼部１１ａと、第２内径（Ｘ２ｍｍ）の第２臼部１１ｂとが設置されている。
【００１８】
前記複数の上杵２０は、それぞれ、対応する臼部１１の内径と略同一外径を有し、該臼部１１内に上方から上下動可能に嵌入される杵部２１と、該杵部２１から上方に延び、対応する臼部１１の内径より大径とされた頭部２２とを有している。
【００１９】
斯かる上杵２０は、前記回転体１０の水平回転と同期して前記垂直回転軸周りに公転するように配設されており、且つ、前記杵部２１の下端部が対応する臼部内の所定位置に位置する下死点と、前記杵部２１の下端部が対応する臼部の上方に待避する上死点との間で上下動可能とされている。
【００２０】
本実施の形態においては、前記複数の上杵２０は、前記第１臼部１１ａに対応する第１上杵２０ａと、前記第２臼部１１ｂに対応する第２上杵２０ｂとを含んでいる。
前記第１及び第２上杵２０ａ，２０ｂは、それぞれ、杵部の外径がＸ１ｍｍ及びＸ２ｍｍより若干（例えば、０．１ｍｍ）小径とされている。
【００２１】
前記上杵加圧機構４０は、公転する上杵２０が前記垂直回転軸周りの周方向所定位置に位置する際に、該上杵２０を上死点から下死点へ押圧するように構成されている。
該上杵加圧機構４０は、前記下杵加圧機構６０との共働下に、被成形材料を圧縮成形する際の狭圧力を提供する。
【００２２】
前記複数の下杵３０は、それぞれ、対応する臼部１１の内径より若干（例えば、０．１ｍｍ）小径とされ、該臼部１１内に下方から上下動可能に嵌入される杵部３１と、該杵部３１から下方に延び、対応する臼部１１の内径より大径とされた頭部３２とを有している。
【００２３】
本実施の形態においては、前記複数の下杵３０は、前記第１臼部１１ａに対応する第１下杵３０ａと、前記第２臼部１１ｂに対応する第２下杵３０ｂとを含んでいる。
【００２４】
このように、第１臼部１１ａには、該第１臼部１１ａに対応した第１上杵２０ａ及び第１下杵３０ａが挿入され、且つ、第２臼部１１ｂには、該第２臼部１１ｂに対応した第２上杵２０ｂ及び第２下杵３０ｂが挿入されるようになっている。
【００２５】
前記下杵加圧機構６０は、前記回転体１０を挟んで、前記上杵加圧機構４０と対向するように配設されている。
即ち、前記上杵加圧機構４０及び前記下杵加圧機構６０は、前記垂直回転軸を基準にして、周方向同一位置に配設されている。
従って、一の上杵２０及び該一の上杵２０に対応する一の下杵３０が、前記上杵加圧機構４０及び前記下杵加圧機構６０と周方向同一位置まで公転されると、該一の上杵２０及び該一の下杵３０によって被成形材料１１０が圧縮され、これにより、圧縮成形品１００が製造される。
【００２６】
前記案内機構５０は、前記回転体１０の下方において案内されるべき前記複数の下杵３０と係合するようになっている。
詳しくは、該案内機構５０は、前記回転体１０の水平回転に連動して前記複数の下杵３０が前記垂直回転軸周りに公転するのに応じ、該複数の下杵３０のそれぞれを上下動させるように構成されている。
【００２７】
より詳しくは、前記案内機構５０は、前記複数の下杵３０のそれぞれを、公転位置に応じて、上端部が前記臼部１１の上端開口と略同一となる上死点と、上端部が前記臼部１１内における所定の下方位置に位置する下死点との間で上下動させるように構成されている。
【００２８】
具体的には、前記案内機構５０は、前記下杵３０における下端部と当接する案内面５１を有している。
該案内面５１は、前記下杵３０の公転方向に沿って、該下杵３０を上死点に位置させる最上部５１ａと、前記下杵３０を最上部５１ａから下方へ案内する下降部５１ｂと、前記下杵３０を所定の分量位置に保持する分量部５１ｃと、前記分量部５１ｃから前記下杵加圧体６０を挟んで配置された渡し部５１ｄと、前記下杵３０を渡し部５１ｄから前記最上部５１へ移行させる押上部５１ｅとを有している。
【００２９】
この回転圧縮成形機１はさらに、下杵引き下げ用従動部材３３と係合部材５２とを備えている。
【００３０】
図２（ａ）に図１に示す前記下降部５１ｂ及び前記係合部材５２による前記下杵３０の動作状態を拡大して示し、図２（ｂ）に前記係合部材５２が下杵引き下げ用従動部材３３の突出部３３ｃと係合している状態を上から見た概略図を示す。
【００３１】
前記従動部材３３は前記下杵３０における下端部の頭部３２に着脱可能に設けられる。さらに言えば、図２（ａ）に示すように、ここでは従動部材３３は、前記下杵３０の頭部３２に設けられた雌ねじ部３２ａ（図中破線で示す）に螺合する雄ねじ部３３ａ（図中破線で示す）を有しており、この従動部材３３の雄ねじ部３３ａが前記下杵３０頭部３２の雌ねじ部３２ａに螺合されることで前記下杵３０の頭部３２に着脱可能に配設される。なお、前記下杵３０の頭部３２外周部に雄ねじ部を設け、それに螺合する雌ねじ部を従動部材３３に設けてもよい。また、それに限らず、従動部材を下杵の頭部に着脱可能に設けることができれば、いずれの態様のものを採用してもよい。
【００３２】
前記下杵引き下げ用従動部材３３は、ここでは直径が上下方向略中央位置から上方向及び下方向に向かって次第に小さくなっている断面六角形状の算盤玉状のものであり、前記下杵３０の頭部３２から径方向外方に突出した突出部３３ｃを有している。
【００３３】
前記係合部材５２は、図２（ｂ）に示すように、ここでは一対の係合部５２１，５２２を有している。前記係合部５２１，５２２は前記下杵３０の頭部３２を挟むように設けられているとともに、該頭部３２の幅より広い、且つ、前記従動部材突出部３３ｃの外径より小さい間隔をおいて対向配置されている。
【００３４】
前記係合部５２１，５２２は、図２（ａ）に示すように、前記従動部材３３を装着した前記下杵３０の該従動部材３３の前記突出部３３ｃと係合するものであり、ここでは前記下杵３０の公転運動に応じて前記従動部材突出部３３ｃと係合しつつ該係合部５２１，５２２の下面に沿って該従動部材突出部３３ｃを移動させることで前記下杵３０が上死点から下死点へ移動できるように、傾斜して配設されており、前記従動部材突出部３３ｃとの係合領域最上流側端位置の高さ５２ａが前記下杵３０の上死点位置での前記従動部材突出部３３ｃ高さ（ここでは前記上下方向略中央位置高さ）３３ｂより上方に位置している。
【００３５】
図１に示す回転圧縮成形機１はさらに操作機構８０を備えている。なお、図１及び図２並びに後述する図４及び図５において操作機構８０は図示を省略してある。
図３に、前記操作機構８０の縦断模式図を示す。図３に示すように、前記操作機構８０は、前記複数の下杵３０のそれぞれに対応して設けられた複数の操作部材８１を有している。
【００３６】
前記操作部材８１は、外部操作に基づき、対応する下杵３０と係合して該下杵３０を上死点に固定する固定位置（図３（ａ）参照）と、対応する下杵３０との前記係合を解除して該下杵３０を上下動可能な状態とする作動位置（図３（ｂ）参照）とをとり得るように構成されている。
【００３７】
本実施の形態においては、前記操作部材８１は、前記回転体１０に径方向移動自在に設けられている。
即ち、本実施の形態においては、前記操作部材８１は、前記垂直回転軸を基準にして、前記回転体１０の径方向外方に位置する際に前記固定位置をとり、且つ、前記回転体１０の径方向内方に位置する際に前記作動位置をとり得るようになっている。
【００３８】
好ましくは、前記複数の下杵３０には、それぞれ、対応する前記操作部材８１が固定位置に位置する際に、該操作部材８１の一部（図示においては、係合ピン８２）が係入される保持凹部３５を設けることができる。
斯かる構成を備えることにより、前記操作部材８１を固定位置に位置させた際に、下杵３０を確実に上死点に保持できる。
【００３９】
前述の通り、該回転圧縮成形機１は、外径Ｘ１ｍｍの圧縮成形品を製造する為の第１臼部１１ａ，第１上杵２０ａ及び第１下杵３０ａと、外径Ｘ２ｍｍの圧縮成形品を製造する為の第２臼部１１ｂ，第２上杵２０ｂ及び第２下杵３０ｂとを有している。
【００４０】
斯かる回転圧縮成形機１において、例えば、第２下杵３０ｂに対応した操作部材８１を作動位置（図３（ｂ）参照）に位置させて前記従動部材３３を装着し、且つ、第１下杵３０ａに対応した操作部材８１を固定位置（図３（ａ）参照）に位置させて前記従動部材３３を離脱するとともに第１上杵２０ａを取り外すことで（図１及び図２（ａ）中鎖線で示す）、外径Ｘ２ｍｍの圧縮成形品を製造することができる。
【００４１】
即ち、斯かる設定により、前記従動部材３３を離脱した第１下杵３０ａは自身の公転位置に拘わらず上死点に保持され、該第１下杵３０ａの杵部３１の上端部が対応する臼部１１ａの上端開口と略同一位置に保持される一方、前記従動部材３３を装着した第２下杵３０ｂは自身の公転位置に応じて前記案内機構５０により案内される。
【００４２】
次に、斯かる構成の回転圧縮成形機１の概略動作説明を行う。
図４は、前記回転体１０の水平回転に拘わらず上死点に固定された一の下杵（本例では前記従動部材３３を離脱した第１下杵３０ａ）の状態変化を時系列で示す縦断面図である。
【００４３】
なお、前記操作部材８１は、外部操作に基づき、対応する下杵３０ａと係合して該下杵３０ａを上死点に固定する固定位置（図３（ａ）参照）をとっており、前記上杵２０ａは回転圧縮成形機１から取り外してある（図中鎖線で示す）。
【００４４】
前記下杵３０ａが前記最上部に位置する際には、該下杵３０ａは上死点に配置されている。
この状態から、前記回転体１０の回転に連動して前記下杵３０ａが公転しても、該下杵３０ａは前記従動部材３３を離脱しており、前記操作部材８１により上死点に固定されているので、前記案内機構５０による前記下杵３０ａの公転に応じた案内動作が行われない。
この回転圧縮成形機１は、図４に示すように、前記下降部５１ｂ及び前記分量部５１ｃに対応した位置に、材料供給部７０を備えている。
しかし、前記下杵３０ａが上死点に配置されたままなので、対応する臼部１１ａ内には被成形材料１１０が充填されることはない。
【００４５】
さらに、前記回転体１０が回転すると、前記下杵３０ａは前記下降部５１ｂから前記分量部５１ｃ、前記下杵加圧体６０、前記渡し部５１ｄ及び前記押上部５１ｅの上方を経て、再び、前記最上部５１ａへ移動する。
【００４６】
図５は、前記回転体１０の水平回転に応じた一の上杵（本例では第２上杵２０ｂ）及び一の下杵（本例では前記従動部材３３を装着した第２下杵３０ｂ）の状態変化を時系列で示す縦断面図である。
【００４７】
なお、前記操作部材８１は、外部操作に基づき、対応する下杵３０ｂとの前記係合を解除して該下杵３０ｂを上下動可能な状態とする作動位置（図３（ｂ）参照）をとっており、前記上杵２０ｂは回転圧縮成形機１に取り付けてある。
【００４８】
前記下杵３０ｂが前記最上部に位置する際には、該下杵３０ｂは上死点に保持されている。
この状態から、前記回転体１０の回転に連動して前記下杵３０ｂが公転すると、該下杵３０ｂは前記従動部材３３が前記係合部材５２と係合しつつ前記最上部５１ａから前記下降部５１ｂへ移動する。
既述したように、前記回転圧縮成形機１は、前記下降部５１ｂ及び前記分量部５１ｃに対応した位置に、材料供給部７０を備えており、斯かる構成により、前記下杵３０ｂが最上部５１ａから下降部５１ｂを介して分量部５１ｃへ移動する際に、対応する臼部１１ｂ内に被成形材料１１０が充填されるようになっている。
【００４９】
さらに、前記回転体１０が回転すると、前記下杵３０ｂは前記下杵加圧機構６０によって上方へ押動される。この際、対応する上杵２０ｂも前記上杵加圧機構４０によって下方へ押動される。従って、対応する臼部１１ｂ内に充填された被成形材料１１０は、上杵２０ｂ及び下杵３０ｂによって狭圧され、該臼部１１ｂの内径に応じた外径の圧縮成形品１００とされる。
なお、斯かる圧縮成形品１００の高さ寸法は、前記上杵２０ｂ及び下杵３０ｂの押動ストロークによって、調整され得る。
【００５０】
この状態から、さらに、回転体１０が回転されると、前記下杵３０ｂは、前記渡し部５１ｄへ移動される。
他方、前記上杵２０ｂは、前記上杵加圧機構４０によって押動された後には、再び、上死点へ戻される。
【００５１】
その後、前記回転体１０の回転に応じて、前記下杵３０ｂは、前記押上部５１ｅを介して、再び、前記最上部５１ａへ移動する。
斯かる下杵３０ｂの上方への移動によって、圧縮成形品１００は回転体１０の上面に押し出される。
【００５２】
このように、本実施の形態に係る回転圧縮成形機１は、前記回転体１０を垂直回転軸周りに水平回転させることで、圧縮成形品１００を製造し得るように構成されているが、該回転圧縮成形機１は、さらに、前記複数の下杵３０のうちの所望の下杵（本実施の形態においては第２下杵３０ｂ）のみを作動状態とする選択機構８０を備えており、これにより、一台の回転圧縮成形機によって少量多形状の圧縮成形品を効率的に製造し得るようになっている。
【００５３】
以上説明した回転圧縮成形機１によると、複数の下杵３０のそれぞれを選択的に上死点に固定する固定状態と、上下動可能な作動状態とに操作する操作機構８０を備えている為、該操作機構８０によって不要な形状及び／又は外径に対応した下杵３０ａを固定状態とし、且つ、該不要な下杵３０ａに対応した上杵２０ａを取り外すという簡単な作業によって、所望の形状及び／又は外径の圧縮成形品を得ることができる。これにより、少量多形状の製造に効率的に対応することができる。
従って、単一の回転圧縮成形機１によって少量多種の圧縮成形品を極めて効率的に製造することができる。
また、固定状態とされた下杵３０ａは、上端部が前記臼部１１ａの上端開口と略同一となる上死点に固定される為、従って、第１下杵３０ａが挿入される臼部１１ａに、前記材料供給部７０から被成形材料１１０が供給されることは無く、該固定状態の下杵３０ａに対応した臼部１１ａ内に被成形材料が充填されるという不都合も生じない。従って、キャップ等の追加部材を備えることなく、被成形材料の無駄を有効に防止できる。これにより、キャップ等の追加部材を備えることなく、材料の無駄を防止できる（図１参照）。
なお、上杵２０の取り外しは、下杵３０の取り外しに比して、容易に行うことができる。従って、不要な上杵（該例示においては、第１上杵２０ａ）の取り外しは、比較的短時間で行うことができる。
【００５４】
さらに、外径Ｘ２ｍｍの圧縮成形品１００を製造している状態から、外径Ｘ１ｍｍの圧縮成形品を製造するように仕様変更する場合には、第１下杵３０ａに対応した操作部材８１を作動位置に位置させるとともに第１上杵２０ａを取り付け且つ、第２下杵３０ｂに対応した操作部材８１を固定位置に位置させるとともに第２上杵２０ｂを取り外すだけで、容易に対処できる。
【００５５】
このように、複数の形状の圧縮成形品を製造し得るように臼部１１，上杵２０及び下杵３０が設定されている回転圧縮成形機において、前記操作機構８０を備えることにより、少量多形状の圧縮製品の製造に極めて効率的に対処できる。
【００５６】
さらに、前記係合部材５２が設けられるとともに、これに係合される前記下杵引き下げ用従動部材３３が前記下杵３０の下端部３２に着脱可能に設けられるので、前記操作機構８０を前記下杵３０ｂの公転運動に応じて前記上下動が可能な作動状態に選択操作する際は、前記下杵３０ｂに前記下杵引き下げ用従動部材３３を装着すれば、前記案内機構５０による前記下杵３０ｂの公転に応じた前記案内動作が良好に行われる。また前記操作機構８０を前記下杵３０ａの公転運動に拘わらず上死点に固定する固定状態に選択操作する際は、前記下杵３０ａから前記下杵引き下げ用従動部材３３を離脱すればよい。このように回転圧縮成形機１によると、前記係合部材５２を設けるとともに前記下杵引き下げ用従動部材３３を前記下杵３０の下端部３２に着脱可能に設けるといった簡単な構成で、前記案内機構５０による前記案内動作を良好に行うことができる。
【００５７】
前記案内機構５０は、本例では前記下降部５１ｂを有する案内面５１を備えているので、前記係合部材５２の係合部５２１，５２２は、前記案内面５１の下降部５１ｂとの共働下に前記下杵引き下げ用従動部材３３の突出部３３ｃを狭持し得る。
【００５８】
前記下杵引き下げ用従動部材３３は本例では算盤玉状のものであり、前記案内機構５０は本例では前記下降部５１ｂを有する案内面５１を備えているので、前記従動部材突出部３３ｃの上面が前記係合部５２１，５２２の下面に沿うとともに前記従動部材突出部３３ｃの下面が前記下降部５１ｂの上面に沿って良好に移動することができる。これにより、下杵引き下げ用従動部材３３を良好に移動させることができる。
【００５９】
なお、本実施の形態においては、２種類の外径の圧縮成形品を製造し得る場合を例にとって説明したが、当然ながら、本発明は、３種類以上の外径の圧縮成形品を製造する場合にも適用可能である。
又、本発明は、外径のみならず、２種類以上の外形状の圧縮成形品を製造する場合にも適用できる。斯かる場合には、前記臼部，上杵及び下杵は、一の外形状の圧縮成形品を製造する為の一の組合せと、他の外形状の圧縮成形品を製造する為の他の組合せとを含むものとされる。
【００６０】
【発明の効果】
以上説明したように本発明によると、一の形状の圧縮成型品を製造する状態から他の形状の圧縮成型品を製造する状態への仕様変更を容易に行うことができる回転圧縮成形機を提供することができる。
【図面の簡単な説明】
【図１】図１は、本発明の一実施の形態に係る回転圧縮成形機の展開縦断面図である。
【図２】図（ａ）は図１に示す下降部及び係合部材による下杵の動作状態を拡大して示した概略図であり、図（ｂ）は係合部材が下杵引き下げ用従動部材の突出部と係合している状態を上から見た概略図である。
【図３】図１に示す回転圧縮成形機に備えられる操作機構の縦断模式図であり、図（ａ）に前記操作機構の操作に基づき下杵が上死点に固定された固定状態を示し、図（ｂ）に前記操作機構の操作に基づき下杵が上下動可能とされた作動状態を示す。
【図４】回転体の水平回転に拘わらず上死点に固定された一の下杵（本例では従動部材を離脱した第２下杵）の状態変化を時系列で示す縦断面図である。
【図５】回転体の水平回転に応じた一の上杵（本例では第２上杵）及び一の下杵（本例では従動部材を装着した第２下杵）の状態変化を時系列で示す縦断面図である。
【符号の説明】
１…回転圧縮成形機１０…回転体１１…臼部２０…上杵２１…杵部
３０…下杵３１…下杵の杵部３２…下杵の下端部
３３…下杵引き下げ用従動部材３３ｂ…従動部材突出部３３ｃ高さ
３３ｃ…従動部材突出部３５…保持凹部４０…上杵加圧機構
５０…案内機構５１…案内面５１ａ…最上部５１ｂ…下降部
５１ｃ…分量部５１ｄ…渡し部５１ｅ…押上部
５２…係合部材５２１，５２２…係合部
５２ａ…係合部５２１，５２２の係合領域最上流側端位置の高さ
６０…下杵加圧機構７０…材料供給部８０…操作機構８１…操作部材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary compression molding machine for compression molding a material to be molded such as a powder.
[0002]
[Prior art]
A rotating body that is driven to rotate horizontally about a vertical rotation axis, the rotating body having a plurality of dies along a circumferential direction, and a rotator that is vertically movably inserted from an upper opening and a lower opening of the mortar. A rotary compression molding machine that includes a punch and a lower punch, and compression-molds a molding material such as a powder filled into the die by the upper punch and the lower punch. Used in the field.
[0003]
By the way, in the conventional rotary compression molding machine, when changing the outer diameter of the compression molded product, the currently mounted mortar, upper punch and lower punch must be exchanged, so that small-quantity multi-form manufacturing is required. Had the problem of being unsuitable.
[0004]
That is, in the rotary compression molding machine, the outer diameter of the compression molded product is defined by the inner diameter of the die and the diameter of the upper punch and the lower punch inserted into the die.
Therefore, when the specification is changed from a state in which a compression molded article having a diameter of X1 mm is manufactured to a state in which a compression molded article having a diameter of X2 mm is manufactured, one mill portion, one upper punch and one lower part corresponding to X1 mm are required. It is necessary to replace the punch with another mortar corresponding to X2 mm, another upper punch, and another lower punch. Such exchange is usually performed by engaging the lower punch and guiding the vertical movement of the lower punch. A part of the guide mechanism to be removed has to be removed, which is a very troublesome operation.
[0005]
As described above, the conventional rotary compression molding machine has not given sufficient consideration to such a change in specifications, and as a result, is not suitable for the production of a small number of multi-shapes.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of such a conventional technique, and can easily perform specification change from a state of manufacturing a compression molded article of one shape to a state of manufacturing a compression molded article of another shape. An object is to provide a rotary compression molding machine.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a rotating body that is horizontally rotated around a vertical rotation axis, wherein a rotating body in which a plurality of dies can be installed along a circumferential direction, A plurality of upper punches each of which is vertically movably inserted into the portion from above, the plurality of upper punches revolving around the vertical rotation axis in synchronization with the horizontal rotation of the rotating body, and the plurality of dies. A plurality of lower punches each of which is vertically movably inserted into a portion from below, wherein the plurality of lower punches revolve around the vertical rotation axis in conjunction with horizontal rotation of the rotating body; An upper punch pressing mechanism that pushes the punches from the upper dead center where the lower end of the upper punch is located above the mortar to the lower dead center where the lower end of the upper punch is located in the mortar. A guide mechanism disposed below the rotating body, wherein the lower punch is moved upward according to the revolution of the lower punch. A top dead center whose portion is substantially the same as the upper end opening of the mortar portion, a guide mechanism for vertically moving the upper end portion between a bottom dead center located at a predetermined lower position in the mortar portion, and the rotating body. A lower punch pressing mechanism disposed to face the upper punch pressing mechanism and pressing the lower punch upward; and each of the plurality of lower punches being engaged with the revolving motion of the lower punch. Operating mechanism for selectively operating between a fixed state in which the lower punch is fixed at the top dead center and an operating state in which the lower punch can be moved up and down in accordance with the revolving motion of the lower punch, and a driven mechanism detachably provided at a lower end of the lower punch. A member, a lower punch lowering driven member having a protruding portion projecting radially outward from a lower end of the lower punch, and the lower punch having the lower punch mounted with the lower punch lowering driven member. An engaging portion that engages with the projecting portion, wherein the engaging portion is driven by the revolving motion of the lower punch; An engagement member for moving the lower punch from top dead center to bottom dead center by moving the driven member projection along the engagement portion while engaging with the projection. Wherein the height of the most upstream end position of the engagement portion with the driven member projecting portion in the engagement area is substantially the same as the height of the driven member projecting portion at the top dead center position of the lower punch, or the driven member projecting Provided is a rotary compression molding machine that is configured to be located above a part height.
[0008]
According to the rotary compression molding machine of the present invention, since there is provided an operating mechanism for operating a fixed state in which each of the plurality of lower punches is selectively fixed to the top dead center and an operating state capable of moving up and down, The lower punch corresponding to an unnecessary shape and / or an outer diameter is fixed by an operation mechanism, and the upper punch corresponding to the unnecessary lower punch is removed by a simple operation to obtain a desired shape and / or an outer diameter. A compression molded product can be obtained.
Therefore, a small number of types of compression molded products can be produced very efficiently by a single rotary compression molding machine.
Further, since the lower punch in the fixed state is fixed to the upper dead center at which the upper end is substantially the same as the upper end opening of the mortar, the material to be molded is placed in the mortar corresponding to the lower punch in the fixed state. There is no disadvantage of being filled. Therefore, waste of the molding material can be effectively prevented without providing an additional member such as a cap.
[0009]
Further, the engagement member is provided, and the lower punch lowering driven member engaged with the lower punch is detachably provided at a lower end portion of the lower punch. If the lower punch is attached with the driven member for pulling down the lower punch, the guide operation according to the revolution of the lower punch by the guide mechanism is good when performing the selection operation to the operation state in which the vertical movement can be performed accordingly. Done in When the operating mechanism is selectively operated to be fixed at the top dead center regardless of the revolving motion of the lower punch, the lower punch lowering driven member may be detached from the lower punch. As described above, according to the rotary compression molding machine of the present invention, the guide mechanism has a simple structure in which the engagement member is provided and the lower punch lowering driven member is detachably provided at the lower end of the lower punch. The guiding operation can be performed favorably.
[0010]
The guide mechanism guides the lower punch at the top dead center and the lower punch from the top along the revolving direction of the lower punch mounted with the lower punch lowering driven member. A guide surface having a descending portion, a dispensing portion for holding the lower punch at a predetermined dispensing position, and a pushing portion for moving the lower punch to the uppermost portion again may be provided. In this case, the engagement portion of the engagement member may hold the protruding portion of the lower punch lowering driven member in cooperation with the descending portion of the guide surface.
[0011]
Examples of the driven member for lowering the lower punch include a ball-shaped abacus having a hexagonal cross section, the diameter of which gradually decreases from a substantially central position in the vertical direction upward and downward. In this case, preferably, the height of the uppermost end position of the engagement portion of the engagement portion with the protrusion of the driven member is lower at the upper dead center position of the lower punch. The height is substantially the same as the height of the vertical position of the driven member in the vertical direction or is higher than the height. By doing so, the upper surface of the driven member protruding portion can move favorably along the engaging portion, and when the guide mechanism includes a guide surface having the descending portion, Since the upper surface of the driven member protruding portion can move along the engaging portion and the lower surface can move along the descending portion, the driven member for pulling down the lower punch can be favorably moved in any case.
[0012]
In the rotary compression molding machine according to the present invention, the operating mechanism is a plurality of operating members provided corresponding to each of the plurality of lower punches, the lower punch being engaged with the corresponding lower punches. May be provided at a fixed position for fixing the lower punch to the top dead center and an operating position for releasing the engagement with the corresponding lower punch so that the lower punch can be moved up and down. In this case, it is preferable that the lower punch has a holding recess into which at least a part of the operation member is engaged when the operation member is located at the fixed position.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a rotary compression molding machine according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a developed longitudinal sectional view of a rotary compression molding machine 1 according to the present embodiment.
[0014]
As shown in FIG. 1, the rotary compression molding machine 1 is provided with a rotating body 10 that is driven and rotated horizontally around a vertical rotation axis (not shown), and is movably disposed above the rotating body 10. A plurality of upper punches 20, a plurality of lower punches 30 disposed below the rotating body 10 so as to be vertically movable, and an upper punch pressing mechanism 40 for pushing the plurality of upper punches 20 downward, respectively. A guide mechanism 50 for guiding each of the plurality of lower punches 30; and a lower punch pressing mechanism 60 for pressing each of the plurality of lower punches upward.
The arrow on the right side in FIG. 1 indicates the rotation direction of the rotating body 10.
[0015]
The rotary compression molding machine 1 performs compression molding by narrowly pressing a molding material such as powder filled in a mortar portion 11 installed along the circumferential direction on the rotating body 10 by the upper punch 20 and the lower punch 30. Used to manufacture goods.
In addition, the rotary compression molding machine 1 can be used for manufacturing various compression molded products such as epoxy resin molded products for semiconductor encapsulation, chemicals, bath additives, button batteries, confectionery and the like.
[0016]
As described above, the rotating body 10 can be provided with a plurality of mortar portions 11 along the circumferential direction.
Specifically, the rotating body 10 has a plurality of through holes 12 extending in the circumferential direction. The through-hole 12 is opened above and below the rotating body 10 so that the die 11 having a desired inner diameter can be detachably installed.
[0017]
In the present embodiment, as shown in FIG. 1, the rotating body 10 has a first mortar portion 11a having a first inner diameter (X1 mm) and a second mortar portion having a second inner diameter (X2 mm) alternately along the circumferential direction. A second mill 11b is provided.
[0018]
Each of the plurality of upper punches 20 has substantially the same outer diameter as the inner diameter of the corresponding die 11, and a punch 21 that is vertically movably fitted into the die 11, And a head 22 having a diameter larger than the inner diameter of the corresponding mill portion 11.
[0019]
Such an upper punch 20 is disposed so as to revolve around the vertical rotation axis in synchronization with the horizontal rotation of the rotating body 10, and a lower end of the punch 21 is provided in a predetermined position in a corresponding die. The lower end of the punch 21 can be moved up and down between the lower dead center located at the position and the upper dead center where the lower end of the punch 21 retreats above the corresponding mortar.
[0020]
In the present embodiment, the plurality of upper punches 20 include a first upper punch 20a corresponding to the first mill 11a and a second upper punch 20b corresponding to the second mill 11b. .
The outer diameters of the first and second upper punches 20a and 20b are slightly smaller (for example, 0.1 mm) than X1 mm and X2 mm, respectively.
[0021]
The upper punch pressing mechanism 40 is configured to press the upper punch 20 from a top dead center to a bottom dead center when the revolving upper punch 20 is located at a predetermined circumferential position around the vertical rotation axis. ing.
The upper punch pressing mechanism 40 provides a narrow pressure when compressing the material to be molded in cooperation with the lower punch pressing mechanism 60.
[0022]
The plurality of lower punches 30 each have a slightly smaller diameter (for example, 0.1 mm) than the inner diameter of the corresponding mill 11, and a punch 31 that is vertically movably fitted into the mill 11 from below. It has a head 32 extending downward from the punch 31 and having a diameter larger than the inner diameter of the corresponding mill 11.
[0023]
In the present embodiment, the plurality of lower punches 30 include a first lower punch 30a corresponding to the first mill 11a, and a second lower punch 30b corresponding to the second mill 11b. .
[0024]
Thus, the first upper punch 20a and the first lower punch 30a corresponding to the first mortar 11a are inserted into the first mortar 11a, and the second mortar 11b is inserted into the second mortar 11b. The second upper punch 20b and the second lower punch 30b corresponding to the portion 11b are inserted.
[0025]
The lower punch pressing mechanism 60 is disposed so as to face the upper punch pressing mechanism 40 with the rotating body 10 interposed therebetween.
That is, the upper punch pressing mechanism 40 and the lower punch pressing mechanism 60 are disposed at the same circumferential position with respect to the vertical rotation axis.
Accordingly, when one upper punch 20 and one lower punch 30 corresponding to the one upper punch 20 are revolved to the same circumferential position as the upper punch pressing mechanism 40 and the lower punch pressing mechanism 60, The molding material 110 is compressed by the one upper punch 20 and the one lower punch 30, whereby the compression molded product 100 is manufactured.
[0026]
The guide mechanism 50 is adapted to engage with the plurality of lower punches 30 to be guided below the rotating body 10.
Specifically, the guide mechanism 50 moves each of the plurality of lower punches 30 up and down in response to the plurality of lower punches 30 revolving around the vertical rotation axis in conjunction with the horizontal rotation of the rotating body 10. It is configured to be.
[0027]
More specifically, the guide mechanism 50 is configured such that each of the plurality of lower punches 30 has a top dead center whose upper end is substantially the same as the upper end opening of the mill portion 11 according to the revolving position, and the upper end has the upper punch. It is configured to move up and down between a lower dead center located at a predetermined lower position in the mortar portion 11.
[0028]
Specifically, the guide mechanism 50 has a guide surface 51 that contacts the lower end of the lower punch 30.
The guide surface 51 includes an uppermost portion 51a that positions the lower punch 30 at the top dead center along a revolving direction of the lower punch 30, and a descending portion 51b that guides the lower punch 30 downward from the uppermost portion 51a. A dispensing portion 51c for holding the lower punch 30 at a predetermined dispensing position, a transfer portion 51d disposed so as to sandwich the lower punch pressurizing member 60 from the dispensing portion 51c, and a transfer portion 51d for transferring the lower punch 30 from the transfer portion 51d. And a push-up portion 51e for shifting to the uppermost portion 51.
[0029]
The rotary compression molding machine 1 further includes a lower punch lowering driven member 33 and an engaging member 52.
[0030]
FIG. 2A is an enlarged view showing an operation state of the lower punch 30 by the lowering portion 51b and the engaging member 52 shown in FIG. 1, and FIG. The schematic diagram which looked at the state which engaged with the projection part 33c of the driven member 33 from the top is shown.
[0031]
The driven member 33 is detachably provided on the head 32 at the lower end of the lower punch 30. Furthermore, as shown in FIG. 2A, here, the driven member 33 is a male screw part 33a that is screwed into a female screw part 32a (shown by a broken line in the figure) provided on the head 32 of the lower punch 30. The male screw 33a of the driven member 33 is screwed into the female screw 32a of the head 32 of the lower punch 30 so that the driven member 33 can be attached to and detached from the head 32 of the lower punch 30. Arranged as possible. A male screw portion may be provided on the outer peripheral portion of the head 32 of the lower punch 30, and a female screw portion screwed to the male screw portion may be provided on the driven member 33. The invention is not limited thereto, and any configuration may be adopted as long as the driven member can be detachably provided on the head of the lower punch.
[0032]
The lower punch lowering driven member 33 has a hexagonal abacus cross section in which the diameter gradually decreases in the upward and downward directions from a substantially central position in the vertical direction. It has a protruding portion 33c that protrudes radially outward from the head portion 32.
[0033]
As shown in FIG. 2B, the engagement member 52 has a pair of engagement portions 521 and 522 here. The engaging portions 521 and 522 are provided so as to sandwich the head 32 of the lower punch 30 and have an interval larger than the width of the head 32 and smaller than the outer diameter of the driven member projecting portion 33c. Are arranged opposite to each other.
[0034]
As shown in FIG. 2A, the engaging portions 521 and 522 engage with the protruding portions 33c of the driven member 33 of the lower punch 30 to which the driven member 33 is mounted. The lower punch 30 is raised by moving the driven member projection 33c along the lower surfaces of the engagement portions 521 and 522 while engaging with the driven member projection 33c according to the revolving motion of the lower punch 30. It is disposed to be inclined so as to be able to move from the dead center to the bottom dead center, and the height 52 a at the most upstream end position of the engagement area with the driven member projection 33 c is set at the top dead center of the lower punch 30. The driven member protruding portion 33c at this position is located above the height (here, the height in the vertical direction substantially at the center) 33b.
[0035]
The rotary compression molding machine 1 shown in FIG. Note that the operation mechanism 80 is not shown in FIGS. 1 and 2 and FIGS. 4 and 5 described later.
FIG. 3 is a schematic vertical sectional view of the operation mechanism 80. As shown in FIG. 3, the operation mechanism 80 has a plurality of operation members 81 provided corresponding to each of the plurality of lower punches 30.
[0036]
The operating member 81 engages with the corresponding lower punch 30 based on an external operation and fixes the lower punch 30 to the top dead center (see FIG. 3A). (See FIG. 3 (b)) to release the engagement of the lower punch 30 so that the lower punch 30 can move up and down.
[0037]
In the present embodiment, the operating member 81 is provided on the rotating body 10 so as to be movable in the radial direction.
That is, in the present embodiment, the operating member 81 takes the fixed position when positioned radially outward of the rotating body 10 with respect to the vertical rotation axis, and The operating position can be taken when it is located radially inward.
[0038]
Preferably, when the corresponding operating member 81 is located at the fixed position, a part of the operating member 81 (an engaging pin 82 in the drawing) is engaged with each of the plurality of lower punches 30. Holding recess 35 can be provided.
With such a configuration, the lower punch 30 can be reliably held at the top dead center when the operation member 81 is located at the fixed position.
[0039]
As described above, the rotary compression molding machine 1 includes a first die 11a, a first upper punch 20a, and a first lower punch 30a for manufacturing a compression molded product having an outer diameter of X1 mm, and a compression molded product having an outer diameter of X2 mm. Has a second mill 11b, a second upper punch 20b, and a second lower punch 30b for manufacturing the same.
[0040]
In such a rotary compression molding machine 1, for example, the operating member 81 corresponding to the second lower punch 30b is located at the operating position (see FIG. 3B), the driven member 33 is mounted, and the first lower The operating member 81 corresponding to the punch 30a is positioned at a fixed position (see FIG. 3A) to release the driven member 33 and to remove the first upper punch 20a (FIGS. 1 and 2A). (Shown by a dashed line), and a compression molded product having an outer diameter of X2 mm can be manufactured.
[0041]
That is, with such a setting, the first lower punch 30a that has detached the driven member 33 is held at the top dead center regardless of its revolving position, and the upper end of the punch 31 of the first lower punch 30a corresponds. The second lower punch 30b to which the driven member 33 is mounted is guided by the guide mechanism 50 in accordance with its own revolving position, while being held at substantially the same position as the upper end opening of the die 11a.
[0042]
Next, a schematic operation of the rotary compression molding machine 1 having such a configuration will be described.
FIG. 4 shows, in chronological order, the state change of one lower punch (in this example, the first lower punch 30a from which the driven member 33 has been detached) fixed to the top dead center regardless of the horizontal rotation of the rotating body 10. It is a longitudinal cross-sectional view.
[0043]
The operating member 81 has a fixed position (see FIG. 3A) for engaging with the corresponding lower punch 30a and fixing the lower punch 30a at the top dead center based on an external operation. The upper punch 20a is detached from the rotary compression molding machine 1 (indicated by a chain line in the figure).
[0044]
When the lower punch 30a is located at the uppermost position, the lower punch 30a is located at the top dead center.
From this state, even if the lower punch 30a revolves in conjunction with the rotation of the rotating body 10, the lower punch 30a has separated from the driven member 33 and is fixed to the top dead center by the operating member 81. Therefore, the guide operation according to the revolution of the lower punch 30a by the guide mechanism 50 is not performed.
As shown in FIG. 4, the rotary compression molding machine 1 includes a material supply section 70 at a position corresponding to the descending section 51b and the metering section 51c.
However, since the lower punch 30a is still disposed at the top dead center, the molding material 110 is not filled in the corresponding die 11a.
[0045]
Further, when the rotating body 10 rotates, the lower punch 30a passes through the lowering portion 51b, the dispensing portion 51c, the lower punch pressing body 60, the passing portion 51d, and the upper portion of the push-up portion 51e. Move to the top 51a.
[0046]
FIG. 5 shows one upper punch (the second upper punch 20b in this example) and one lower punch (the second lower punch 30b in which the driven member 33 is mounted in this example) according to the horizontal rotation of the rotating body 10. FIG. 3 is a longitudinal sectional view showing a state change of the chronological order.
[0047]
In addition, the operation member 81 releases the engagement with the corresponding lower punch 30b based on an external operation to set the lower punch 30b in a vertically movable state (see FIG. 3B). The upper punch 20b is attached to the rotary compression molding machine 1.
[0048]
When the lower punch 30b is located at the uppermost position, the lower punch 30b is held at the top dead center.
From this state, when the lower punch 30b revolves in conjunction with the rotation of the rotating body 10, the lower punch 30b moves from the uppermost portion 51a to the lowering portion while the driven member 33 is engaged with the engaging member 52. Move to 51b.
As described above, the rotary compression molding machine 1 includes the material supply section 70 at a position corresponding to the descending section 51b and the dispensing section 51c. With this configuration, the lower punch 30b is moved to the uppermost position. When moving from 51a to dispensing section 51c via descending section 51b, molding material 110 is filled in corresponding mortar section 11b.
[0049]
Further, when the rotating body 10 rotates, the lower punch 30b is pushed upward by the lower punch pressing mechanism 60. At this time, the corresponding upper punch 20b is also pushed downward by the upper punch pressing mechanism 40. Therefore, the molding material 110 filled in the corresponding die portion 11b is narrowed by the upper punch 20b and the lower punch 30b to form a compression molded product 100 having an outer diameter corresponding to the inner diameter of the die portion 11b.
The height of the compression-molded article 100 can be adjusted by the pressing stroke of the upper punch 20b and the lower punch 30b.
[0050]
When the rotating body 10 is further rotated from this state, the lower punch 30b is moved to the transfer portion 51d.
On the other hand, the upper punch 20b is returned to the top dead center again after being pushed by the upper punch pressing mechanism 40.
[0051]
Thereafter, in response to the rotation of the rotating body 10, the lower punch 30b moves to the uppermost portion 51a again via the push-up portion 51e.
The upward movement of the lower punch 30b pushes the compression-molded article 100 to the upper surface of the rotating body 10.
[0052]
As described above, the rotary compression molding machine 1 according to the present embodiment is configured so that the compression molding 100 can be manufactured by horizontally rotating the rotating body 10 around a vertical rotation axis. The rotary compression molding machine 1 further includes a selection mechanism 80 that activates only a desired lower punch (in the present embodiment, the second lower punch 30b) of the plurality of lower punches 30. Thus, a small number of multi-compression molded products can be efficiently manufactured by one rotary compression molding machine.
[0053]
According to the rotary compression molding machine 1 described above, since the operating mechanism 80 for operating the fixed state in which each of the plurality of lower punches 30 is selectively fixed to the top dead center and the operating state capable of moving up and down is provided. The desired shape can be obtained by a simple operation of fixing the lower punch 30a corresponding to an unnecessary shape and / or outer diameter by the operation mechanism 80 and removing the upper punch 20a corresponding to the unnecessary lower punch 30a. And / or a compression molded article having an outer diameter can be obtained. Thereby, it is possible to efficiently cope with the production of a small number of multi-shapes.
Therefore, a single rotary compression molding machine 1 can produce a small amount of various types of compression molded products very efficiently.
Further, since the lower punch 30a in the fixed state is fixed to the upper dead center where the upper end portion is substantially the same as the upper end opening of the mill portion 11a, the lower punch 30a is inserted with the first lower punch 30a. In addition, the molding material 110 is not supplied from the material supply unit 70, and there is no inconvenience that the molding material is filled in the mortar portion 11a corresponding to the lower punch 30a in the fixed state. Therefore, waste of the molding material can be effectively prevented without providing an additional member such as a cap. Thus, waste of material can be prevented without providing an additional member such as a cap (see FIG. 1).
The removal of the upper punch 20 can be performed more easily than the removal of the lower punch 30. Therefore, unnecessary removal of the upper punch (in this example, the first upper punch 20a) can be performed in a relatively short time.
[0054]
Further, when the specification is changed from manufacturing the compression molded article 100 having the outer diameter X2 mm to manufacturing a compression molded article having the outer diameter X1 mm, the operating member 81 corresponding to the first lower punch 30a is operated. This can be easily dealt with by simply positioning the first upper punch 20a at the position, mounting the operating member 81 corresponding to the second lower punch 30b at the fixed position, and removing the second upper punch 20b.
[0055]
As described above, in the rotary compression molding machine in which the mortar portion 11, the upper punch 20, and the lower punch 30 are set so that a plurality of compression molded products can be manufactured, by providing the operation mechanism 80, a small amount of It can deal with the production of compressed products in a very efficient manner.
[0056]
Further, the engagement member 52 is provided, and the lower punch lowering driven member 33 engaged with the engagement member 52 is detachably provided on the lower end portion 32 of the lower punch 30. When selecting the operation state in which the vertical movement can be performed in accordance with the revolving motion of the punch 30b, the lower punch 30b can be attached to the lower punch 30b by attaching the lower punch lowering driven member 33 to the lower punch 30b by the guide mechanism 50. The above-described guiding operation according to the revolution of the vehicle is performed satisfactorily. When the operation mechanism 80 is selectively operated to be fixed to the top dead center regardless of the revolving motion of the lower punch 30a, the lower punch lowering driven member 33 may be detached from the lower punch 30a. As described above, according to the rotary compression molding machine 1, the guide mechanism has a simple configuration in which the engagement member 52 is provided and the lower punch lowering driven member 33 is detachably provided on the lower end portion 32 of the lower punch 30. 50 can perform the above-mentioned guiding operation satisfactorily.
[0057]
Since the guide mechanism 50 includes the guide surface 51 having the descending portion 51b in this example, the engaging portions 521 and 522 of the engaging member 52 cooperate with the descending portion 51b of the guide surface 51. The projection 33c of the lower punch lowering driven member 33 can be held below.
[0058]
The lower punch lowering driven member 33 is in the form of an abacus ball in this example, and the guide mechanism 50 has the guide surface 51 having the descending portion 51b in this example. The upper surface follows the lower surfaces of the engaging portions 521 and 522, and the lower surface of the driven member protruding portion 33c can move favorably along the upper surface of the descending portion 51b. Accordingly, the lower punch lowering driven member 33 can be moved favorably.
[0059]
In the present embodiment, the case where two types of compression molded products having outer diameters can be manufactured has been described as an example. However, the present invention naturally produces three or more types of compression molded products having outer diameters. The case is also applicable.
Further, the present invention can be applied not only to the production of a compression-molded product having two or more external shapes but also to an outer diameter. In such a case, the mortar portion, the upper punch and the lower punch are combined with one another for producing a compression molded article having one external shape and another combination for producing a compression molded article having another external shape. And combinations.
[0060]
【The invention's effect】
As described above, according to the present invention, there is provided a rotary compression molding machine capable of easily changing specifications from a state of manufacturing a compression molded article of one shape to a state of manufacturing a compression molded article of another shape. can do.
[Brief description of the drawings]
FIG. 1 is a developed vertical sectional view of a rotary compression molding machine according to an embodiment of the present invention.
FIG. 2A is a schematic diagram showing an enlarged operation state of a lower punch by a descending portion and an engaging member shown in FIG. 1, and FIG. It is the schematic which looked at the state which engaged with the protrusion part of the member from the top.
3 is a schematic vertical sectional view of an operation mechanism provided in the rotary compression molding machine shown in FIG. 1, and FIG. 3A shows a fixed state in which a lower punch is fixed to a top dead center based on operation of the operation mechanism. FIG. 2B shows an operating state in which the lower punch can be moved up and down based on the operation of the operation mechanism.
FIG. 4 is a longitudinal sectional view showing, in chronological order, a state change of one lower punch (in this example, a second lower punch from which a driven member is detached) fixed to the top dead center regardless of the horizontal rotation of the rotating body. .
FIG. 5 is a time series showing the state change of one upper punch (second upper punch in this example) and one lower punch (second lower punch equipped with a driven member in this example) according to the horizontal rotation of the rotating body. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Rotation compression molding machine 10 ... Rotating body 11 ... Muscle part 20 ... Upper punch 21 ... Punch unit 30 ... Lower punch 31 ... Lower punch punch part 32 ... Lower punch lower end part 33 ... Lower punch lowering driven member 33b ... Follower member protrusion 33c Height 33c: Follower member protrusion 35: Holding recess 40: Upper punch pressing mechanism 50: Guide mechanism 51: Guide surface 51a: Uppermost portion 51b: Lowering portion 51c: Dispensing portion 51d: Transfer portion 51e: Push-up portion 52: engaging members 521, 522: engaging portion 52a: height at the most upstream end position of the engaging region of the engaging portions 521, 522 60: lower punch pressing mechanism 70: material supply portion 80: operating mechanism 81 ... Operation member

Claims

A rotating body that is horizontally rotated around a vertical rotation axis, and a rotating body in which a plurality of mortar portions can be installed along a circumferential direction,
A plurality of upper punches which are inserted to be vertically movable from above with respect to the plurality of mortars, respectively, and a plurality of upper punches revolving around the vertical rotation axis in synchronization with horizontal rotation of the rotating body,
A plurality of lower punches inserted to be vertically movable from below with respect to the plurality of dies, respectively, and a plurality of lower punches revolving around the vertical rotation axis in conjunction with horizontal rotation of the rotating body,
An upper punch which pushes the plurality of upper punches from a top dead center where the lower end of the upper punch is located above the mill to a lower dead center where the lower end of the upper punch is located inside the mill. A pressure mechanism,
A guide mechanism disposed below the rotating body, wherein the lower punch is moved in accordance with the revolution of the lower punch, and the upper dead end of the lower punch is substantially the same as the upper end opening of the die. A guide mechanism for moving the part up and down between a bottom dead center located at a predetermined lower position in the mortar part,
A lower punch pressing mechanism disposed to face the upper punch pressing mechanism with the rotating body interposed therebetween, and pressing the lower punch upward.
Each of the plurality of lower punches is selectively operated to a fixed state in which the lower punch is fixed to the top dead center regardless of the revolving motion of the lower punch, and an operating state in which the vertical movement can be performed according to the revolving motion of the lower punch. An operating mechanism;
A driven member detachably provided at a lower end portion of the lower punch, a lower punch lowering driven member having a protruding portion projecting radially outward from a lower end portion of the lower punch,
The lower punch having the lower punch lowering driven member mounted thereon has an engagement portion that engages with the protrusion of the driven member, and the engagement portion projects the driven member in accordance with the revolving motion of the lower punch. An engagement member for moving the lower punch from top dead center to bottom dead center by moving the driven member protrusion along the engagement portion while engaging the portion.
The engagement member is such that the height of the engagement portion with the driven member protrusion at the most upstream end position of the engagement area with the driven member protrusion is substantially the same as the height of the driven member protrusion at the top dead center position of the lower punch or A rotary compression molding machine, wherein the rotary compression molding machine is configured to be located above the height of the driven member protrusion.

The guide mechanism guides the lower punch at the top dead center and the lower punch from the top along the revolving direction of the lower punch mounted with the lower punch lowering driven member. A descending portion, a dispensing portion that holds the lower punch at a predetermined dispensing position, and a guide surface having a push-up portion that shifts the lower punch to the uppermost portion again,
2. The rotary compression molding machine according to claim 1, wherein the engagement portion of the engagement member sandwiches the protrusion of the lower punch lowering driven member in cooperation with the descending portion of the guide surface. 3.

The driven member for pulling down the lower punch is a ball-shaped abacus having a hexagonal cross section, the diameter of which gradually decreases in the upward and downward directions from a substantially central position in the vertical direction,
The engagement member is configured such that a height of an end position of a most upstream side of an engagement area of the engagement portion with the driven member protrusion is a height of the lower punch lowering driven member at a top dead center position of the lower punch. 3. The rotary compression molding machine according to claim 1, wherein the rotary compression molding machine is located at substantially the same height as or substantially above the height of the center position in the direction.

The operating mechanism is a plurality of operating members provided corresponding to each of the plurality of lower punches, a fixing position to engage with the corresponding lower punch and fix the lower punch to the top dead center. The rotary compression molding according to any one of claims 1 to 3, further comprising an operation member capable of releasing an engagement with the corresponding lower punch so as to take an operating position where the lower punch can be moved up and down. Machine.

The rotary compression molding machine according to claim 4, wherein the lower punch has a holding recess into which at least a part of the operating member is engaged when the operating member is located at a fixed position.