PIPE CUTTING MACHINE

... [Problem] To provide a pipe cutting machine, which is capable of efficiently cutting even large diameter pipes in a short time, the structure of which is simple, small, lightweight and economical, and which has excellent durability. [Solution] A pipe cutting machine for cutting a pipe 10 at a right angle to the center line thereof is provided with: a pair of rotating saw blades 20, 20 disposed, when a plane at a right angle to the center line of the pipe 10 to be cut is the x-y plane and the center of the pipe 10 is the origin of the coordinates, opposite each other on the two sides of the y-axis so that the tool edges overlap in the x-axis direction; a rectilinear drive mechanism 50 for rectilinearly driving the pair of rotating saw blades 20, 20 in opposite directions in the y-axis direction so that the pair of rotating saw blades 20, 20 pass by each other on and near the x-axis; and motive power direction-changing mechanisms 46 and 47 for moving the pair of rotating saw blades 20, 20 ...

SQUEEZE DEVICE

... [Problem] To provide a squeeze device for manufacturing an electric resistance welded pipe, which has a simple structure, achieves easy downsizing and weight reduction, and requires an easy operation at a time of roll exchanging, and which is excellent in economy and workability. [Solution] A squeeze device provided with: a U-shaped fixed stand 10, a top portion of which is opened; and a slide-type roll support plate 60 which is inserted in the stand so as to be capable of being taken out from the opened top portion of the U-shaped fixed stand 10, and held in the stand. The roll support plate 60 supports a pair of left and right side rolls 40 and upper rolls 50 on a main surface on an upstream side so as to be movable in a pressing direction, and has, in a position surrounded by the rolls, a space 61 for causing the pipe-like material to pass through. The space 61 is a part of a notch-like opening portion which is opened toward a lower rim of the roll support plate 60. The pair of left ...

PIPE CUTTING MACHINE

To provide a pipe cutting machine capable of cutting a pipe even of a large diameter efficiently in a short period of time, and achieving excellent economical efficiency and excellent durability with a simple, compact, and light-weight configuration. A pipe cutting machine cuts a pipe 10 at a right angle to the center line of the pipe 10. The pipe cutting machine comprises: rotary blades 20, 20 in a pair, with a plane at a right angle to the center line of the pipe 10 to be cut defined as an x-y plane and the center of the pipe 10 defined as a coordinate origin, the rotary blades being arranged to face each other on both sides of a y axis in such a manner that blade edges of the rotary blades 20, 20 overlap each other in the direction of an x axis; a straightforward driving mechanism 50 that drives the rotary blades 20, 20 in a pair straightforward in opposite directions of a y-axis direction so as to make the rotary blades 20, 20 in a pair pass each other on the x axis and in the vicinity of the x axis; and a power direction conversion mechanism 46 and a power direction conversion mechanism 47 that change part of straightforward driving force in the y-axis direction to force in the x-axis direction and move the rotary blades 20, 20 in a pair outwardly to get farther from the y axis for avoiding interference between the blade edges when the rotary blades 20, 20 in a pair pass each other on the x axis and in the vicinity of the x axis.

PIPE CUTTING MACHINE

To provide a pipe cutting machine capable of cutting a pipe even of a large diameter efficiently in a short period of time, and achieving excellent economical efficiency and excellent durability with a simple, compact, and light-weight configuration. 1. A stationary or traveling pipe cutting machine that cuts a pipe at a right angle to the center line of the pipe , comprising:rotary blades in a pair, with a plane at a right angle to the center line of the pipe to be cut defined as an x-y plane and the center of the pipe defined as a coordinate origin, the rotary blades being arranged to face each other on both sides of a y axis in such a manner that blade edges of the rotary blades overlap each other in the direction of an x axis;a straightforward driving mechanism that drives the rotary blades in a pair straightforward in opposite directions of a y-axis direction so as to make the rotary blades in a pair pass each other on the x axis and in the vicinity of the x axis; anda power direction conversion mechanism that changes part of straightforward driving force in the y-axis direction to force in the x-axis direction and moves at least one of the rotary blades in a pair outwardly to get farther from the y axis for avoiding interference between the blade edges when the rotary blades in a pair pass each other on the x axis and in the vicinity of the x axis.2. The pipe cutting machine according to claim 1 , whereinthe power direction conversion mechanism comprises:a blade biasing mechanism that applies biasing force to at least one of the rotary blades in a pair inwardly to get closer to the y axis and holds the biased rotary blade at an inner movement limit; anda guide mechanism that causes the at least one of the rotary blades in a pair to make an outward retreating movement against the biasing force when the rotary blades in a pair pass each other on the x axis and in the vicinity of the x axis.3. The pipe cutting machine according to claim 2 , whereinthe blade ...

Squeeze device

スクイズ装置

【課題】 構造が簡単で小型軽量化が容易であり、かつロール替えが簡単で製管品質が高い電縫管製造用スクイズ装置を提供する。マンドレルバーを取り外すことなくロール替えを行う。【解決手段】 上部が開放されたＵ型固定スタンド10と、Ｕ型固定スタンド10の開放上部から当該スタンド内に取り出し可能に挿入されて当該スタンド内に保持されるスライド式の面板で、その上流側の主面に左右一対のサイドロール40及び上ロール50を支持し、これらのロールに包囲された位置に、管状材料を通過させる空間61を有するロール支持板60とを備える。前記空間61は、前記ロール支持板61の下縁に向けて開放する切欠き状開口部の一部である。左右一対のサイドロール40は、各々のロール軸42が上方に向かって外側へ傾斜した傾斜ロールである。【選択図】 図17