CN201342451Y

CN201342451Y - Die of steel tube reeling straightening machine

Info

Publication number: CN201342451Y
Application number: CNU2008202300763U
Authority: CN
Inventors: 王青斌; 马天海; 岳金成; 吕毓军; 何应东
Original assignee: Tianshui Metalforming Machine Tool Co Ltd
Current assignee: Tianshui Metalforming Machine Tool Co Ltd
Priority date: 2008-12-14
Filing date: 2008-12-14
Publication date: 2009-11-11
Anticipated expiration: 2018-12-14

Abstract

The utility model discloses a die of a steel tube reeling straightening machine. A base is connected with an upper die holder by a bolt; the base and the upper die holder are provided with a locating key; the bolts evenly arranged on the outer crown face of an upper forming die are fixed on the upper die holder; the bolts evenly arranged on the outer crown face of a lower forming die are fixed on a lower die holder; the inside end plane of the upper forming die and the lower forming die is an involute transition surface; the top of the inner surface of the upper forming die is provided with a continuous groove axially; the contact surface of the upper forming die and the lower forming die is correspondingly provided with a stop pin which matches with and is connected with a pin hole; the outer wall of the upper die holder and the lower die holder is provided with a lifting bolt correspondingly; an upper lifting bolt and a lower lifting bolt are corresponding and connected by a connecting ring; and the outer wall of the upper die holder and the lower die holder is provided with a lifting pin correspondingly. Because the steel tube reeling straightening machine die is adopted, when the dies are closed, the coaxiality of the upper forming die and the lower forming die is ensured; the roundness of the steel tube is improved; the processing quality of the steel tube is ensured; and the service life of the forming die is prolonged.

Description

The whole footpath of steel pipe straightener mould

Technical field

The utility model relates to the auxiliary equipment of putting in order the footpath equipment for straightening in the tubulation industry in a kind of straight welded pipe production line, is specifically related to the different size steel pipe is carried out the whole footpath of the steel pipe straightener mould of finishing and aligning.

Background technology

The whole footpath of steel pipe straightener mould is a whole footpath aligning mould of manufacturing the industry design specially for ERW, is mainly used in the finishing of round steel external diameter, and its patrix comes usefulness as the aligning patrix when aligning simultaneously, has dual-use function.The time there is following problem in finishing mold in the past in work: it is excessive with the concentric deviation of following die finish one, to go up die finish, causes after the finishing deviation from circular from of steel pipe excessive, does not satisfy the instructions for use of steel pipe; Two, when the finishing steel pipe, the inboard termination of die finish is the line contact with the contacting of tube wall of steel pipe up and down, and outer wall of steel pipe scratches, the die finish damage thereby make, and has had a strong impact on pipe quality and outward appearance; Three, because steel pipe has a straight weld, weld seam is unlikely to weigh the circularity that die finish influences steel pipe after the finishing simultaneously wounded in order to make, the commissure cushioning sheet iron of being everlasting, and complicated operation, efficient is low.In view of above deficiency, need to improve finishing mold and improve product quality and production efficiency.

Summary of the invention

The purpose of this utility model provides a kind of machining accuracy height, the whole footpath of quality is good, production efficiency is high steel pipe straightener mould.

To achieve these goals, the technical scheme that the utility model is taked is: the whole footpath of a kind of steel pipe straightener mould, by base, die holder, die finish is formed, described base and upper bolster adopt Bolt Connection, described base and upper bolster are provided with positioning key, the center line both sides become 120 ° of being bolted on the upper bolster of evenly arranging on the exterior arc surface of described upward die finish, the center line both sides become 120 ° of being bolted on the die shoe of evenly arranging on the exterior arc surface of described die finish down, on described, the inner side end place of following die finish is the fillet surface of involute formula, described inner surface top at last die finish is axially arranged with groove, on described, mutually correspondingly on the contact-making surface of following die finish be provided with alignment pin and pin-and-hole is connected, on described, the outer wall of die shoe is provided with mutual corresponding lifting screw, two mutually corresponding up and down lifting screws connect by connecting ring, described on, also be provided with the pins of mutual correspondence on the outer wall of die shoe.

Adopt the whole footpath of above-mentioned steel pipe straightener mould, because upper and lower die finish is to change behind matched moulds and install, alignment pin can guarantee the concentricity of upper and lower die finish behind the matched moulds, thereby improves the circularity of steel pipe; Process the involute fillet surface at die finish inner side end place up and down, reduced outer surface of steel tube in the finishing deformation process with the contact stress of die finish end, both guaranteed the crudy of steel pipe, prolonged the service life of die finish again.The contact stress of outer surface of steel tube and die finish end when having reduced aligning simultaneously prevents steel pipe generation local deformation and flattens; The groove that processes at patrix inner surface top place makes weld seam aim at this groove during in finishing; avoid producing between the weld seam exposed portions serve of steel pipe and the die finish too high extrusion stress; both protect the intensity of weld seam, the die finish surface is not damaged by weld seam, prolonged the service life of die finish.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

The specific embodiment

As shown in Figure 1, the base 1 of this whole footpath of pipe straightener mould adopts Bolt Connection with upper bolster 3, described base 1 is provided with positioning key 2 with upper bolster 3, the center line both sides become 120 ° of bolts of evenly arranging to be separately fixed on the upper bolster 3 on the exterior arc surface of described upward die finish 5, the center line both sides become 120 ° of bolts of evenly arranging to be separately fixed on the die shoe 9 on the exterior arc surface of described die finish 10 down, on described, following die

finish

5,10 inner side end place is the fillet surface of involute formula, described inner surface top at last die finish 5 is axially arranged with groove, on described, following die finish 5, mutually correspondingly on 10 the contact-making surface be provided with alignment pin 6 and pin-and-hole is connected, on described, die

shoe

3,9 outer wall is provided with mutual corresponding lifting screw 4, two mutually corresponding up and down lifting screws 4 connect by connecting ring 7, described on, die shoe 3, also be provided with the pins 8 of mutual correspondence on 9 the outer wall.

Base 1 and die holder 3 adopt Bolt Connection, and be with positioning key 2 location, accurate when guaranteeing to install, quick.Bolt on the exterior arc surface of upper and

lower die finish

5,10 makes the connected mode simple and convenient.The minimum range of upper and

lower die finish

5,10 is 50 ± 0.05mm during installation, and upper and lower

die finish

5,10 arc surfaces during this position are concentric, when the finishing steel pipe, improves the circularity of steel pipe.This reduces steel duct stress and concentrates apart from making steel pipe that the certain deformation space is arranged, and helps the shaping of steel pipe when finishing, prevents that simultaneously the die finish straight flange from abrading body when finishing, thereby has improved the circularity and the surface quality of steel pipe.Can save installing space during this external replacing mould.Its function of fillet surface that upper and

lower die finish

5,10 inner side end places process involute is: reduce outer surface of steel tube in the finishing deformation process with the contact stress of die finish end, both guarantee the crudy of steel pipe, prolonged the service life of die finish again.The contact stress of outer surface of steel tube and die finish end when having reduced aligning simultaneously prevents steel pipe generation local deformation and flattens.Groove at wide 40mm of place, last die finish 5 inner surface tops processing, dark 4mm; its function is: during finishing; make weld seam aim at this groove; avoid producing between the weld seam exposed portions serve of steel pipe and the die finish too high extrusion stress; both protected the intensity of weld seam; the die finish surface is not damaged by weld seam, prolonged the service life of die finish.Alignment pin 6 played the role of positioning in that upper and lower die finish is installed in 5,10 o'clock, guaranteed that upper and

lower die finish

5,10 is concentric, guaranteed to install accurate positioning.Connecting ring 7 hung over lifting screw 4 at 5,10 o'clock at the upper and lower die finish of loading and unloading and connects upper and lower die finish, and is simple, convenient.Pins 8 is used for overhead traveling crane lifting mould up and down, and is safe and reliable.

Above-described only is preferred embodiment of the present utility model.Should be understood that for the person of ordinary skill of the art, under technology enlightenment provided by the utility model,, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model as the common practise of mechanical field.

Claims

1. a steel pipe is put in order footpath straightener mould, by base, die holder, die finish is formed, described base (1) adopts Bolt Connection with upper bolster (3), described base (1) is provided with positioning key (2) with upper bolster (3), the center line both sides become 120 ° of being bolted on the upper bolster (3) of evenly arranging on the exterior arc surface of described upward die finish (5), the center line both sides become 120 ° of being bolted on the die shoe (9) of evenly arranging on the exterior arc surface of described die finish (10) down, on described, following die finish (5,10) inner side end place is the fillet surface of involute formula, described inner surface top at last die finish (5) is axially arranged with groove, on described, following die finish (5,10) mutually correspondingly on the contact-making surface be provided with alignment pin (6) and pin-and-hole is connected, on described, die shoe (3,9) outer wall is provided with mutual corresponding lifting screw (4), mutually corresponding up and down two lifting screws (4) connect by connecting ring (7), described on, die shoe (3,9) also be provided with the pins (8) of mutual correspondence on the outer wall.