JPH0314005U

JPH0314005U -

Info

Publication number: JPH0314005U
Application number: JP7327189U
Authority: JP
Priority date: 1989-06-22
Filing date: 1989-06-22
Publication date: 1991-02-13
Anticipated expiration: 2004-06-22
Also published as: JPH072083Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す正面図、第２
図は要部を断面で示した第１図の部分拡大図、第
３図、第４図は第２図のＡ〜線、Ｂ〜線に沿う断
面図、第５図は第４図の平面図、第６図は油圧シ
リンダの制御回路、第７図、第８図、第９図、第
１０図は成形パイプ内径変更の手順を示す概略図
である。１……インナービーム、２……フオーミングロ
ール、３……ロールサポート、４……インナーパ
イプサポートロール、５……昇降ガイド、６……
係合部、７，９……ブラケツト、８，１０……ピ
ン、１１……油圧シリンダ、１２……比例電磁弁
、１３……パイロツト操作チエツク弁、１４……
油圧ポンプ、１５……スライド孔、１６……スク
ロール摺動溝、１７……ロール取付部材、１８…
…スクロール、１９……ラツク、２０……ピン、
２１……内歯、２２……ピニオン、２３……ピニ
オン軸、２４……減速機、２５……モータ支持フ
レーム、２６……電動モータ、２７……ユニバー
サルスピンドル。 Figure 1 is a front view showing one embodiment of the present invention;
The figure is a partial enlarged view of Figure 1 showing the main part in cross section, Figures 3 and 4 are sectional views taken along lines A and B in Figure 2, and Figure 5 is a plane view of Figure 4. 6 are hydraulic cylinder control circuits, and FIGS. 7, 8, 9, and 10 are schematic diagrams showing the procedure for changing the inner diameter of the formed pipe. 1... Inner beam, 2... Forming roll, 3... Roll support, 4... Inner pipe support roll, 5... Lifting guide, 6...
Engaging portion, 7, 9... Bracket, 8, 10... Pin, 11... Hydraulic cylinder, 12... Proportional solenoid valve, 13... Pilot operation check valve, 14...
Hydraulic pump, 15...Slide hole, 16...Scroll sliding groove, 17...Roll mounting member, 18...
...Scroll, 19...Rack, 20...Pin,
21... Internal teeth, 22... Pinion, 23... Pinion shaft, 24... Speed reducer, 25... Motor support frame, 26... Electric motor, 27... Universal spindle.

Claims

[Scope of utility model registration request]

A plurality of forming rolls are arranged in a row along the beam longitudinal direction at the bottom of the inner beam, and
A roll support that is approximately circular when viewed in the beam longitudinal direction is attached to the tip of the inner beam so that it can be adjusted vertically.
In an inner diameter reference roll position adjustment device for a spiral pipe mill, in which a plurality of inner pipe support rolls are attached at intervals around the circumference of the roll support so as to be adjustable in movement by the same amount in the radial direction of the roll support, at the tip of the inner beam, A hydraulic cylinder that moves the roll support up and down and a detector that detects the amount of roll support movement are provided, and the roll support is equipped with a scroll that is engaged with each roll mounting member that supports the inner pipe support roll and is concentric with the roll support. What is claimed is: 1. An inner diameter reference roll position adjustment device for a spiral pipe mill, characterized in that the roll support is rotatably mounted and provided with a drive device for rotating the scroll and a detector for detecting the amount of movement of the inner pipe support roll.