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(19)

(11)

2 440 239

(13)

(51)

IPC

B29C41/38(2006-01-01)

B29C70/32(2006-01-01)

B29C33/42(2006-01-01)

(21) (22)

Application

2010136752/05, 2010-09-01

(24)

Start date

2010-09-01

(22)

Actual filing date

2010-09-01

(45)

Published

2012-01-20

(72)

Inventor

Melekhin Aleksandr Grigor'EvichMinchenkov Aleksandr MikhajlovichRjabinin Sergej Borisovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Proizvodstvennoe Ob"Edinenie

MANDREL FOR PRODUCTION OF BELLOWS COMPENSATOR Russian patent published in 2012 - IPC B29C41/38 B29C70/32 B29C33/42

Abstract RU 2440239 C1

FIELD: process engineering.

SUBSTANCE: invention relates to production of articles from composite materials, namely, bellows compensators for main pipelines with flutes from reinforced composite material and reinforcing rings fitted into flute recesses. Mandrel comprises central shaft with shaping elements set fitted thereon. Said shaping elements have annular section with rounded ledges alternating with rounded recesses. On both sides of said section telescopically mounted are holders of the ends of billet from reinforced composite material for forming corrugation of bellows compensator. Said holders are connected by springs with lock rings arranged nearby mandrel ends to move there along toward forming elements ledges in forming every said reinforcing ring.

EFFECT: higher mandrel reliability.

3 dwg

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RU 2 440 239 C1

Authors

Melekhin Aleksandr Grigor'Evich

Minchenkov Aleksandr Mikhajlovich

Rjabinin Sergej Borisovich

Dates

2012-01-20—Published

2010-09-01—Filed