JP3741738B2

JP3741738B2 - Method and apparatus for cutting molded body

Info

Publication number: JP3741738B2
Application number: JP02807595A
Authority: JP
Inventors: 和典伊藤; 孝司道本; 昇杉野
Original assignee: Babcock Hitachi KK
Current assignee: Mitsubishi Power Ltd
Priority date: 1995-02-16
Filing date: 1995-02-16
Publication date: 2006-02-01
Anticipated expiration: 2021-02-01
Also published as: JPH08216139A

Description

【０００１】
【産業上の利用分野】
本発明は軟質の成形体の切断方法およびその装置に係り、特に、触媒等に用いられる多数の貫通孔を持つハニカム状に押出し成形された軟質の成形体を切断するのに好適な切断方法およびそれを実施する切断装置に関する。
【０００２】
【従来の技術】
従来、例えばセラミック材料に有機バインダを加えて混練した坏土（陶磁器などの素地土）をダイスを通して押出し成形した多数の貫通孔と、ほぼ均一な厚さの壁を有する断面形状がハニカム状の押出し成形体を所定の寸法に切断する場合に、その切断方法として押出し直後の軟らかい時期に切断するか、あるいは乾燥、焼成し、ある程度、硬度が増加した状態で切断するという２つの切断方法がある。これらの内、押出し直後の軟らかい時期に切断する方法としては、図７に示すように、径が０.１〜１ｍｍの太さの切断用ワイヤ２を用い、作業者等の手により切断用ワイヤ２を引き下げて切断する方法や、図６に示すように、切断用ワイヤ２の両端を強固に固定し、シリンダ３等のパワーで、実線で示す位置から破線で示す位置に押し下げて切断する方法等が用いられている（例えば、特開昭６３−６７１０５号公報）。
【０００３】
【発明が解決しようとする課題】
図７に示すように、作業者が切断用ワイヤ２の両端を手に持ち切断すると、切断したハニカム状の成形体５の端面は、段差が生じることなく平滑に切断できるが、切断用ワイヤ２は細く径が小さいため取り扱いにくく、作業能率が非常に悪いという問題があった。また、図６に示すような切断用ワイヤ２の両端を強固に固定し、ハニカム状の成形体５を切断すると、押し切りといった形になり切断端面に段差が付き易く、しかもハニカム状の成形体５のハニカム形状が押し切りによって潰され易く、また切断用ワイヤ２自身も切損され易いという問題があった。
さらに、通常の押出し成形は連続的に行われるため、成形体を所定のサイズに切断する回数が多くなり、それだけ切断工数が増加するという問題もあり、作業者の手による切断ではなく自動的に切断する装置の実現が望まれていた。
本発明の目的は、上記従来技術における問題点を解消するものであって、任意の断面形状を有する軟質の成形体の切断端面を、段差が生じることなく、平滑に、かつ作業効率良く切断することができる成形体の切断方法およびそれを実施する装置を提供することにある。
【０００４】
【課題を解決するための手段】
上記本発明の目的を達成するために、本発明は特許請求の範囲に記載されたような構成とするものである。すなわち、
本発明は請求項１に記載のように、バインダを含む成形材料を用いて多数の貫通孔を有するハニカム形状の成形体に成形した軟質の成形体を、所定の太さの切断用ワイヤにより上記成形体の断面に対しほぼ平行方向に切断する方法において、上記切断用ワイヤの両端部を、該切断用ワイヤの弾性限界内の所定の張力を与え、設定の長さ伸縮が自在で、かつ設定の角度回動可能な構造の切断用ワイヤ固定治具で支持し、該切断用ワイヤ固定治具を成形体を挟んで両側に配設し、上記一対の切断用ワイヤ固定治具を成形体の上方または下方から、下方向または上方向に移動させて切断用ワイヤを成形体中に挿入し、該切断用ワイヤが成形体中を山形状もしくは逆山形状となって通過し切断する成形体の切断方法とするものである。
また、本発明は請求項２に記載のように、請求項１において、切断用ワイヤの径は０.１〜１ｍｍの範囲となし、切断用ワイヤに与える張力は、該切断用ワイヤの弾性限界内の所定の値となし、切断用ワイヤの両端部の回動角度が±４５度以内の範囲で自在に回動する構造の切断用ワイヤ固定治具を用いて切断を行う成形体の切断方法とするものである。
また、本発明は請求項３に記載のように、バインダを含む成形材料を用いて多数の貫通孔を有するハニカム形状の成形体に成形した軟質の成形体を、所定の太さの切断用ワイヤにより上記成形体の断面に対しほぼ平行方向に切断する装置であって、切断用ワイヤの両端部に、使用する所定の径の切断用ワイヤの弾性限界内の反力を持つバネ体を備え、かつ切断用ワイヤの引っ張り方向に設定の長さ伸縮自在な構造の切断用ワイヤ固定治具を、成形体を挟んで両側に配設し、上記切断用ワイヤ固定治具は、切断用ワイヤの両端部のワイヤ接続部近傍に設けられたピンを中心に、成形体の切断方向に２次元的にほぼ±４５度の範囲で自在に回動する構造となし、上記ピンを支点に切断用ワイヤに力の掛かった方向に自在に向きが変えられると共に、切断用ワイヤを設定の長さ伸縮自在に支持する構造の切断用ワイヤ固定治具を少なくとも配設した成形体の切断装置とするものである。
さらに、本発明は請求項４に記載のように、請求項３において、切断用ワイヤの弾性限界内の反力を持つバネ体は、ほぼ３ｋｇ／ｃｍ ^２前後の反力を有する成形体の切断装置とするものである。
【０００５】
【作用】
本発明の成形体の切断方法は、請求項１に記載のように、バインダを含む成形材料を用いて所定の断面形状に成形した軟質の成形体を、所定の太さの切断用ワイヤにより上記成形体の断面に対しほぼ平行方向に切断する方法において、上記切断用ワイヤの両端部を、該切断用ワイヤの弾性限界内の所定の張力を与え、設定の長さ伸縮が自在で、かつ設定の角度回動可能な構造の切断用ワイヤ固定治具で支持し、該切断用ワイヤ固定治具を成形体を挟んで両側に配設し、上記一対の切断用ワイヤ固定治具を成形体の上方または下方から、下方向または上方向に移動させて切断用ワイヤを成形体中に挿入し、該切断用ワイヤが成形体中を山形状もしくは逆山形状となって通過し切断するので、切断用ワイヤの成形体に対する切断角度が常にほぼ斜めに入って切断することになり、したがって、切断用ワイヤに掛かる力は小さくなり、また、力の掛かった方向に自在に向きが変えられるので、切断用ワイヤが切れることなく効率良く自動的に切断作業ができると共に、平滑で段差のない平面に切断することができる。
また、本発明の成形体の切断方法は、具体的に、請求項２に記載のように、切断する成形体の断面形状は多数の貫通孔を有するハニカム状の軟質の押出し成形体であり、切断用ワイヤの径は０.１〜１ｍｍのものを使用し、切断用ワイヤに与える張力は、用いる切断用ワイヤの弾性限界内の適当な張力とし、例えば、ほぼ３Ｋｇ／ｃｍ²前後に調整して、切断用ワイヤの両端部の回動角度を±４５度以内の範囲に変えられるワイヤ固定治具を用いて切断するものであり、力の掛かった方向に自在に向きが変えられるワイヤ固定治具で切断用ワイヤを支持しているので、軟質の成形体であっても変形させることなく、かつ切断面を平滑に段差なく自動的に切断することができる。
さらに、本発明の成形体の切断装置は、請求項３または請求項４に記載のように、切断用ワイヤの両端部に、使用する所定の径の切断用ワイヤの弾性限界内の反力（例えば、３ｋｇ／ｃｍ²前後）を持つバネ体を備え、かつ切断用ワイヤの引っ張り方向に設定の長さ伸縮自在な構造の切断用ワイヤ固定治具を、成形体を挟んで両側に配設し、上記切断用ワイヤ固定治具は、切断用ワイヤの両端部のワイヤ接続部近傍に設けられたピンを中心に、成形体の切断方向に２次元的にほぼ±４５度の範囲で自在に回動する構造となし、上記ピンを支点に切断用ワイヤに力の掛かった方向に自在に向きが変えられると共に、切断用ワイヤを設定の長さ伸縮自在に支持する構造の切断用ワイヤ固定治具を備えているので、切断用ワイヤには常に適切な張力が作用し、かつ張力が掛かった方向に自在に向きが変えられるので、切断用ワイヤが破断することなく、軟質の成形体であっても変形させることなく、切断端面を段差なく平滑な平面に自動的に切断することができ、切断作業を極めて効率良く行うことができる。
ここで、さらに本発明の成形体の切断方法の作用ならびに効果について、図５を用いて具体的に説明する。図５（ａ）に示すように、約３ｋｇ／ｃｍ²前後の反力のバネ８付きワイヤ固定治具１が、切断用ワイヤ２と共に下降し、切断用ワイヤ２が成形体５の上面に到達すると、切断用ワイヤ２に切断方向とは逆向きの力が加わり、この逆向きの力と釣り合うまでバネ８は伸び続ける。この時、ワイヤ固定治具１は力の掛かる方向に向きを変えるので、切断用ワイヤ２は図５（ｂ）に示すように山形状となる。また、図５（ｃ）に示すように、切断用ワイヤ２を成形体５に対し下から上に上昇させて成形体５を切断する時においても、成形体５に対し切断用ワイヤ２は上記と同様に作用するが、この場合は切断用ワイヤ２は逆山形状となる。
切断用ワイヤ２は、図５（ｄ）に示すように、成形体５のハニカム形状を構成する厚みの小さい壁９に対してほぼ斜めに入ることにより、切断用ワイヤ２と成形体５の各々壁９との接触部分が少なくなり、ほぼ点接触のような状態となるため、大きな切断力を必要とすることなく、切断用ワイヤ２はスムーズに成形体５の中を通過することが可能となり、小さな力で容易に切断することができる。また、成形体５の切断が完了するまで、切断用ワイヤ２は、図５（ｂ）に示すように山形状（または図５（ｃ）に示すように逆山形状）であるため、切断用ワイヤ２と成形体５の各々壁９は常にほぼ点状に接触し、成形体５を潰すことなく、切断端面には段差が生じることなく平滑に切断することができるので、切断面の仕上りがきれいになる。
さらに、切断用ワイヤ２には、上述のように、一度に大きな力が加わらず、切断用ワイヤ２の張力の方向にワイヤ固定治具１が首振運動することによって、張力の方向に向きを合わせる構造であるため、切断用ワイヤ２に無理な力が掛からず、したがって切断用ワイヤ２は切れにくく、切断作業効率が著しく向上する。
【０００６】
【実施例】
以下に本発明の実施例を挙げ、図面を用いてさらに詳細に説明する。
図１は本実施例で例示する成形体の切断装置の正断面構造を示し、図２は側断面構造を示す模式図である。
本発明の成形体の切断装置は、主に、切断用ワイヤ２を取り付けるためのバネ８を内蔵したワイヤ固定治具１と、ワイヤ固定治具１を上下動させるシリンダ３と、押出し成形体５の先端部５′を検知するセンサ４により構成されている。
ワイヤ固定治具１は、スライドブロック１４の左右に１個ずつ設け、スライドブロック１４は、フレーム６に接続されている。また、フレーム６は、シリンダ３に直結されており、シリンダ３の伸長によって、フレーム６、スライドブロック１４、ワイヤ固定治具１を、軸７に沿って下降させて切断用ワイヤ２により成形体５を切断する構造になっている。
まず、図２に示すように、上流からベルトコンベア１２上を押し出されてくる、例えばハニカム状成形体５の先端５′をセンサ４が検知すると、シリンダ３が作動（伸長）し、ワイヤ固定治具１が下降を開始する〔図５（ａ）〕。そして、切断用ワイヤ２が成形体５の上面に到達すると、切断用ワイヤ２は、図５（ｂ）に示すごとく山形状となり、図５（ｄ）に示すように、ハニカム状成形体を構成する厚みの小さい壁９とほぼ点接触しながら切断されていくため、成形体５の切断面は平滑できれいになる。成形体５を切断した後は、最下段でシリンダ３の伸長は停止し、フレーム６、スライドブロック１４、ワイヤ固定治具１は待機状態となる。
再び、成形体５の先端５′をセンサ４が検知すると、今度はシリンダ３が収縮し、シリンダ３の収縮によって、フレーム６、スライドブロック１４およびワイヤ固定治具１は、下方から上方へ上昇を開始する〔図５（ｃ）〕。この時、切断用ワイヤ２は、下降時と同様に、成形体５のハニカム状成形体を構成する厚みの小さい壁９とほぼ点接触しながら切断していく〔図５（ｄ）〕。つまり、切断用ワイヤ２は下降時とは逆の逆山形状となって成形体５を下から上へと切断していく。ワイヤ固定治具１は、成形体５の切断が完了した後、最上段で停止し、次の下降による切断まで、上方で待機する。
切断用ワイヤ２の両端は、図４に示すワイヤー固定治具１の切断用ワイヤ接続部１０に固定されている。ワイヤー固定治具１は、図４に示すように、外筒１５、バネ８、切断用ワイヤ接続部１０、ピン１３によって構成され、ワイヤ固定用治具１は、図３に示すように、スライドブロック１４に回動可能に支持されている。したがって、図５（ｂ）に示すように、成形体５を上から下へ切断する場合には、ワイヤ固定治具１は、ピン１３を支点に、図４のＢ−Ｂ線で示される位置に傾斜して、切断用ワイヤ２は、図５（ｂ）に示すように山形状となる。
つまり、切断用ワイヤ２が山形状となることによって、図４に示すバネ８は伸び、切断用ワイヤ接続部１０は、矢印Ｃで示す方向、すなわち、図の左から右へ移動して、切断用ワイヤ２が山形状になるのを助ける。このように、切断用ワイヤ２は、バネ８の伸びによって山形状となるので切断用ワイヤ２に掛かる力は小さくなり、切断用ワイヤ２の切断を抑制することができ、図５（ｄ）に示すように、斜めに平滑に切断することができる。
また、成形体５を下から上へ切断する場合には、切断用ワイヤ２は、図５（ｃ）に示すように逆山形状となり、上記図５（ｂ）の山形状と比べて逆の形になる。
【０００７】
【発明の効果】
本発明の成形体の切断方法および装置によれば、切断用ワイヤが成形体に対し山形状もしくは逆山形状で成形体を切断通過するようにし、切断用ワイヤの成形体に対する切断角度が常にほぼ斜めに入って切断するので、切断用ワイヤに掛かる力が小さくなり、また力の掛かった方向に自在に向きが変えられるので、切断用ワイヤが切れることなく効率良く切断作業ができると共に、例えば、軟質の押出し成形体であっても、成形体を変形させることなく、また切断端面を潰すことなく、平滑で段差のないきれいな平面に切断することができる。
【図面の簡単な説明】
【図１】本発明の実施例で例示した成形体切断装置の正断面構造を示す模式図。
【図２】本発明の実施例で例示した成形体切断装置の側断面構造を示す模式図。
【図３】図１のＡ−Ａ矢視図。
【図４】本発明の実施例で例示した成形体切断装置のワイヤ固定治具の構造を示す模式図。
【図５】本発明の実施例で例示した成形体を切断する際のワイヤ固定治具と切断ワイヤの動きを示す説明図。
【図６】従来の成形体の切断方法を示す模式図。
【図７】従来の成形体の他の切断方法を示す模式図。
【符号の説明】
１…ワイヤ固定治具
２…切断用ワイヤ
３…シリンダ
４…センサ
５…成形体（ハニカム状成形体）
５′…成形体の先端
６…フレーム
７…軸
８…バネ
９…ハニカム状成形体を構成する壁
１０…切断用ワイヤ接続部
１１…ダイス
１２…ベルトコンベア
１３…ピン
１４…スライドブロック
１５…外筒[0001]
[Industrial application fields]
The present invention relates to a method and apparatus for cutting a soft molded body, and in particular, a cutting method suitable for cutting a soft molded body extruded into a honeycomb shape having a large number of through-holes used for a catalyst and the like. The present invention relates to a cutting device that performs the same.
[0002]
[Prior art]
Conventionally, for example, a honeycomb-shaped extruded material having a large number of through-holes formed by extruding a kneaded clay (a ceramic or other base material) kneaded with an organic binder added to a ceramic material through a die and a wall having a substantially uniform thickness When the molded body is cut to a predetermined size, there are two cutting methods for cutting at a soft time immediately after extrusion, or by drying and firing, and cutting with a certain degree of hardness. Among these, as a method of cutting at a soft time immediately after extrusion, a cutting wire 2 having a diameter of 0.1 to 1 mm is used as shown in FIG. A method of cutting 2 by pulling down, or a method of firmly fixing both ends of the cutting wire 2 and pushing down from a position indicated by a solid line to a position indicated by a broken line with the power of the cylinder 3 or the like as shown in FIG. Etc. are used (for example, JP-A-63-67105).
[0003]
[Problems to be solved by the invention]
As shown in FIG. 7, when the operator holds both ends of the cutting wire 2 and cuts them, the end surface of the cut honeycomb-shaped formed body 5 can be cut smoothly without any step, but the cutting wire 2 Has a problem that it is difficult to handle because it is thin and has a small diameter, and the work efficiency is very poor. Further, when both ends of the cutting wire 2 as shown in FIG. 6 are firmly fixed and the honeycomb-shaped formed body 5 is cut, it becomes a push-cut shape, and the cut end surface is likely to have a step, and the honeycomb-shaped formed body 5 There was a problem that the honeycomb shape was easily crushed by pressing and the cutting wire 2 itself was easily cut.
Furthermore, since normal extrusion molding is continuously performed, there is a problem that the number of times the molded body is cut into a predetermined size increases, and the man-hour for cutting increases accordingly. Realization of a cutting device has been desired.
An object of the present invention is to eliminate the above-mentioned problems in the prior art, and to cut a cut end face of a soft molded body having an arbitrary cross-sectional shape smoothly and efficiently without causing a step. An object of the present invention is to provide a method for cutting a molded body and an apparatus for performing the method.
[0004]
[Means for Solving the Problems]
In order to achieve the above object of the present invention, the present invention is configured as described in the claims. That is,
According to the present invention, as described in claim 1, a soft molded body molded into a honeycomb-shaped molded body having a large number of through holes using a molding material containing a binder is cut with a cutting wire having a predetermined thickness. In the method of cutting in a direction substantially parallel to the cross section of the molded body, both ends of the cutting wire are given a predetermined tension within the elastic limit of the cutting wire, and the length of the set is freely extendable and set. Is supported by a cutting wire fixing jig having a structure capable of rotating at an angle, and the cutting wire fixing jig is disposed on both sides of the molded body, and the pair of cutting wire fixing jigs are mounted on the molded body. From above or below, the cutting wire is inserted into the molded body by moving downward or upward, and the cutting wire passes through the molded body in a mountain shape or an inverted mountain shape and cuts. It is a cutting method.
Further, the present invention is as claimed in claim 2, in claim 1, without the diameter of the disconnected wire is a range of 0.1 to 1 mm, the tension applied to the cutting wire, the elasticity of the cutting wire Cutting a molded body that is cut using a cutting wire fixing jig that has a predetermined value that is within the limits, and that rotates freely within a range where the rotation angle of both ends of the cutting wire is within ± 45 degrees. It is a method.
According to a third aspect of the present invention , a soft molded body molded into a honeycomb-shaped molded body having a large number of through-holes using a molding material containing a binder is formed into a cutting wire having a predetermined thickness. Is provided with a spring body having a reaction force within the elastic limit of the cutting wire of a predetermined diameter to be used at both ends of the cutting wire. A cutting wire fixing jig having a structure that can be expanded and contracted for a length set in the pulling direction of the cutting wire is arranged on both sides of the molded body, and the cutting wire fixing jig is arranged at both ends of the cutting wire. The pin is provided in the vicinity of the wire connection part of the part, and the structure can be freely rotated in a range of approximately ± 45 degrees two-dimensionally in the cutting direction of the molded body. The direction can be changed freely in the direction where the force is applied. Cutting wire fixture structure for supporting the cutting wire length telescopically set the one in which the cutting device at least provided with moldings.
Further, according to the present invention, as described in claim 4, the spring body having a reaction force within the elastic limit of the cutting wire according to claim 3 is a cutting of a molded body having a reaction force of about 3 kg / cm ^2. It is a device.
[0005]
[Action]
According to the method for cutting a molded body of the present invention, as described in claim 1, the soft molded body molded into a predetermined cross-sectional shape using a molding material containing a binder is cut with the cutting wire having a predetermined thickness. In the method of cutting in a direction substantially parallel to the cross section of the molded body, both ends of the cutting wire are given a predetermined tension within the elastic limit of the cutting wire, and the length of the set is freely extendable and set. Is supported by a cutting wire fixing jig having a structure capable of rotating at an angle, and the cutting wire fixing jig is disposed on both sides of the molded body, and the pair of cutting wire fixing jigs are mounted on the molded body. Since the cutting wire is inserted into the molded body by moving downward or upward from above or below, the cutting wire passes through the molded body in a mountain shape or an inverted mountain shape and cuts. The cutting angle of the wire for the molded object is always almost oblique Therefore, the force applied to the cutting wire is reduced, and the direction can be freely changed in the direction in which the force is applied, so that the cutting wire is efficiently cut without being cut. In addition to being able to work, it can be cut into a smooth and flat surface.
The method for cutting a molded body of the present invention is specifically a honeycomb extruded soft molded body having a large number of through-holes in the cross-sectional shape of the molded body to be cut, as described in claim 2. The diameter of the cutting wire is 0.1 to 1 mm, and the tension applied to the cutting wire is an appropriate tension within the elastic limit of the cutting wire to be used, for example, adjusted to about 3 kg / cm ^2. The wire fixing jig is capable of cutting using a wire fixing jig that can change the rotation angle of both ends of the cutting wire within a range of ± 45 degrees, and the direction can be freely changed in the direction in which the force is applied. Since the cutting wire is supported by the tool, even if it is a soft molded body, the cutting surface can be automatically cut smoothly without any step without being deformed.
Furthermore, as described in claim 3 or claim 4, the cutting device for a molded body according to the present invention has a reaction force (within the elastic limit of a cutting wire having a predetermined diameter to be used) at both ends of the cutting wire ( For example, a cutting wire fixing jig having a spring body having a length of about 3 kg / cm ² ) and having a length that can be stretched in the pulling direction of the cutting wire is disposed on both sides of the molded body. The cutting wire fixing jig can be freely rotated in a range of approximately ± 45 degrees two-dimensionally in the cutting direction of the molded body around the pins provided in the vicinity of the wire connecting portions at both ends of the cutting wire. A cutting wire fixing jig with a structure that can move freely in the direction in which force is applied to the cutting wire with the pin as a fulcrum, and that supports the cutting wire so that it can be stretched for a set length. So that the cutting wire always has the proper tension. Since the direction can be changed freely in the direction in which it acts and tension is applied, the cutting wire does not break, and even if it is a soft molded body, the cutting end surface is automatically flattened without any step. And can be cut very efficiently.
Here, the action and effect of the method for cutting a molded body of the present invention will be specifically described with reference to FIG. As shown in FIG. 5A, the wire fixing jig 1 with the spring 8 having a reaction force of about 3 kg / cm ² descends together with the cutting wire 2, and the cutting wire 2 reaches the upper surface of the molded body 5. Then, a force in the direction opposite to the cutting direction is applied to the cutting wire 2, and the spring 8 continues to extend until the force in the opposite direction is balanced. At this time, since the direction of the wire fixing jig 1 is changed in the direction in which the force is applied, the cutting wire 2 has a mountain shape as shown in FIG. Further, as shown in FIG. 5 (c), when the cutting wire 2 is lifted from the bottom to the top of the molded body 5 to cut the molded body 5, the cutting wire 2 is not removed from the molded body 5. In this case, the cutting wire 2 has an inverted mountain shape.
As shown in FIG. 5 (d), the cutting wire 2 enters substantially obliquely with respect to the thin wall 9 constituting the honeycomb shape of the molded body 5, whereby each of the cutting wire 2 and the molded body 5 is obtained. Since the contact portion with the wall 9 is reduced and the state is almost point contact, the cutting wire 2 can smoothly pass through the molded body 5 without requiring a large cutting force. Can be easily cut with a small force. Further, until the cutting of the molded body 5 is completed, the cutting wire 2 has a mountain shape as shown in FIG. 5B (or an inverted mountain shape as shown in FIG. 5C). Each wall 9 of the wire 2 and the molded body 5 is always in a substantially point-like contact, and can be cut smoothly without crushing the molded body 5 without causing a step on the cut end surface. become clean.
Further, as described above, a large force is not applied to the cutting wire 2 at once, and the wire fixing jig 1 swings in the direction of the tension of the cutting wire 2 so that the direction of the tension is changed. Due to the structure, the cutting wire 2 is not subjected to excessive force, and therefore the cutting wire 2 is difficult to cut and the cutting work efficiency is remarkably improved.
[0006]
【Example】
Examples of the present invention will be described below and will be described in more detail with reference to the drawings.
FIG. 1 shows a front sectional structure of a molded body cutting device exemplified in the present embodiment, and FIG. 2 is a schematic diagram showing a side sectional structure.
The molded body cutting apparatus of the present invention mainly includes a wire fixing jig 1 incorporating a spring 8 for attaching a cutting wire 2, a cylinder 3 for moving the wire fixing jig 1 up and down, and an extrusion molded body 5. It is comprised by the sensor 4 which detects the front-end | tip part 5 '.
One wire fixing jig 1 is provided on each of the left and right sides of the slide block 14, and the slide block 14 is connected to the frame 6. Further, the frame 6 is directly connected to the cylinder 3, and by extension of the cylinder 3, the frame 6, the slide block 14, and the wire fixing jig 1 are lowered along the shaft 7, and the formed body 5 is cut by the cutting wire 2. It is structured to cut.
First, as shown in FIG. 2, when the sensor 4 detects, for example, the tip 5 'of the honeycomb-shaped formed body 5 pushed out from the upstream side from the upstream, the cylinder 3 operates (extends), and the wire fixing treatment is performed. The tool 1 starts to descend [FIG. 5 (a)]. When the cutting wire 2 reaches the upper surface of the molded body 5, the cutting wire 2 has a mountain shape as shown in FIG. 5 (b), and constitutes a honeycomb-shaped molded body as shown in FIG. 5 (d). Since the thin wall 9 is cut while being substantially point-contacted, the cut surface of the molded body 5 is smooth and clean. After the molded body 5 is cut, the extension of the cylinder 3 stops at the lowest stage, and the frame 6, the slide block 14, and the wire fixing jig 1 are in a standby state.
When the sensor 4 detects the tip 5 ′ of the molded body 5 again, the cylinder 3 contracts this time, and the contraction of the cylinder 3 causes the frame 6, the slide block 14 and the wire fixing jig 1 to rise upward from below. Start [FIG. 5 (c)]. At this time, the cutting wire 2 is cut while being substantially in point contact with the thin wall 9 constituting the honeycomb-shaped formed body of the formed body 5 in the same manner as when it is lowered (FIG. 5D). That is, the cutting wire 2 has a reverse mountain shape opposite to that when it is lowered, and cuts the molded body 5 from the bottom to the top. After the cutting of the molded body 5 is completed, the wire fixing jig 1 stops at the uppermost stage, and waits upward until the next cutting by lowering.
Both ends of the cutting wire 2 are fixed to the cutting wire connecting portion 10 of the wire fixing jig 1 shown in FIG. As shown in FIG. 4, the wire fixing jig 1 includes an outer cylinder 15, a spring 8, a cutting wire connecting portion 10, and a pin 13. The wire fixing jig 1 slides as shown in FIG. The block 14 is rotatably supported. Therefore, as shown in FIG. 5B, when the molded body 5 is cut from the top to the bottom, the wire fixing jig 1 is positioned at the position indicated by the line BB in FIG. The cutting wire 2 has a mountain shape as shown in FIG.
That is, when the cutting wire 2 has a mountain shape, the spring 8 shown in FIG. 4 extends, and the cutting wire connecting portion 10 moves in the direction indicated by the arrow C, that is, from the left to the right in the drawing, and cuts. Help the wire 2 have a mountain shape. Thus, since the cutting wire 2 has a mountain shape due to the extension of the spring 8, the force applied to the cutting wire 2 is reduced, and the cutting of the cutting wire 2 can be suppressed, as shown in FIG. As shown, it can be cut smoothly and diagonally.
Further, when the molded body 5 is cut from the bottom to the top, the cutting wire 2 has an inverted mountain shape as shown in FIG. 5C, which is opposite to the mountain shape shown in FIG. 5B. Become a shape.
[0007]
【The invention's effect】
According to the method and apparatus for cutting a molded body of the present invention, the cutting wire passes through the molded body in a mountain shape or an inverted mountain shape with respect to the molded body, and the cutting angle of the cutting wire with respect to the molded body is always almost equal. Since it enters obliquely and cuts, the force applied to the cutting wire is reduced, and the direction can be freely changed in the direction in which the force is applied, so that the cutting wire can be cut efficiently without breaking, for example, Even a soft extrusion-molded body can be cut into a smooth flat surface without a step difference without deforming the molded body and without crushing the cut end face.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a front sectional structure of a molded body cutting apparatus exemplified in an embodiment of the present invention.
FIG. 2 is a schematic diagram showing a side cross-sectional structure of a molded body cutting apparatus exemplified in an embodiment of the present invention.
3 is an AA arrow view of FIG.
FIG. 4 is a schematic view showing a structure of a wire fixing jig of the molded body cutting apparatus exemplified in the embodiment of the present invention.
FIG. 5 is an explanatory view showing the movement of the wire fixing jig and the cutting wire when cutting the molded body exemplified in the embodiment of the present invention.
FIG. 6 is a schematic view showing a conventional method for cutting a molded body.
FIG. 7 is a schematic diagram showing another cutting method of a conventional molded body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Wire fixing jig 2 ... Cutting wire 3 ... Cylinder 4 ... Sensor 5 ... Molded object (honeycomb-shaped molded object)
5 '... the tip 6 of the formed body 6 ... the frame 7 ... the shaft 8 ... the spring 9 ... the wall 10 constituting the honeycomb formed body 10 ... the wire connecting portion 11 for cutting ... the die 12 ... the belt conveyor 13 ... the pin 14 ... the slide block 15 ... the outside Tube

Claims

A soft molded body molded into a honeycomb-shaped molded body having a large number of through holes using a molding material containing a binder is cut in a direction substantially parallel to the cross section of the molded body with a cutting wire having a predetermined thickness. In the method, both ends of the cutting wire are given a predetermined tension within the elastic limit of the cutting wire, the length of the set wire can be expanded and contracted, and the cutting wire can be fixed at a set angle. Supported by a jig, the cutting wire fixing jig is disposed on both sides of the molded body, and the pair of cutting wire fixing jigs are moved downward or upward from above or below the molded body. The cutting wire is inserted into the molded body, and the cutting wire passes through the molded body in a mountain shape or an inverted mountain shape and cuts.

In claim 1, the diameter of the disconnected wire is without the range of 0.1 to 1 mm, the tension applied to the cutting wire is a predetermined value and without in the elastic limit of the cutting wire, both ends of the cutting wire A cutting method for a molded body, characterized in that cutting is performed using a cutting wire fixing jig having a structure in which the rotation angle of the portion is freely rotated within a range of ± 45 degrees or less.

A soft molded body molded into a honeycomb-shaped molded body having a large number of through holes using a molding material containing a binder is cut in a direction substantially parallel to the cross section of the molded body with a cutting wire having a predetermined thickness. The device is provided with a spring body having a reaction force within the elastic limit of a cutting wire of a predetermined diameter to be used at both ends of the cutting wire, and can be extended and contracted for a set length in the pulling direction of the cutting wire A cutting wire fixing jig having a simple structure is arranged on both sides of the molded body, and the cutting wire fixing jig is centered on pins provided in the vicinity of the wire connecting portions at both ends of the cutting wire. The structure can be freely rotated in a two-dimensional range of approximately ± 45 degrees in the cutting direction of the molded body, and the direction can be freely changed in the direction in which force is applied to the cutting wire with the pin as a fulcrum, Supports cutting wire with a set length to extend and contract At least arranged to be cutting device of the molded body, characterized in comprising a cutting wire fixture structure.

4. The molded body cutting device according to claim 3, wherein the spring body having a reaction force within the elastic limit of the cutting wire has a reaction force of about 3 kg / cm ² .