CN201150965Y - Pipe expanding device of convex ring right trapezoid stainless steel tube - Google Patents

Abstract

The utility model discloses a tube expanding device of a convex ring right-angled trapezoid stainless steel tube. The tube expanding device comprises a base, an upright post, a positioning bearing block, a positioning cover, a handle, an adjusting female screw, a top board, a regulating rod, a screw mandrel, a positioning front end cover, an inner die roller, an outer die roller, a bearing block, a binding bolt and the like, wherein a convex surface with a right-angled trapezoid shape is arranged on the inner die roller, a convex groove with a same outer diameter shape with a flared end of a stainless steel tube is arranged on the outer die roller, the outer diameter of the roller must be smaller than the inner diameter of the stainless steel tube, the outer die roller is used as a concave die, an inner hole of the stainless steel tube which will be molded is inserted into the inner die roller, the convex ring positions of a convex die and the concave die are mutually corresponding, the convex die presses an outer die into the concave groove in the corresponding position under the effect of radial pressure, the outer die rotates along the radial pressure is applied, and the right-angled trapezoid convex ring stainless steel tube is molded through rolling. The utility model has the advantages of simple structure and convenient operation, the tube expanding device enables the pipe convex ring spherical degree to be good and increases the sealing performance, and the like.

Description

The pipe expander of bulge loop right-angled trapezium stainless steel tube

Technical field:

The utility model relates to the stainless steel pipe expander equipment of pipeline and pipeline connecting pipe fitting, especially designs the pipe expander of bulge loop right-angled trapezium stainless steel tube.

Technical background:

At present, known pipe fitting is various, wherein in the daily life relatively commonly used a kind of be the pipe expander of direct insertion pipe fitting, though structure is simple, pipe fitting easily leaks.Cross sectional shape according to more current thin-wall metal pipe bulge loops is a triangle, they are by three roller moulding bulge loops, promptly be with the roller in top centre be punch, below two parallel rollers as die, that goes up like this that surface roller presses downwards makes the minimum point of force at punch, first touches tubing, and the middle bottom of pipe is the centre of parallel roller, it is a room, the rotation of pipe is not 360 degree rotations on central point in the bulge loop forming process of processing tube like this, but tube wall is to ELLIPTIC REVOLUTION radially down below, and the light-wall pipe of moulding and bulge loop are round, pipe fitting bulge loop distortion usually taking place in the use insert and do not advance connecting tube, has influence on the quality of product.

Summary of the invention:

At the prior art deficiency, the purpose of this utility model is to change the stainless steel tube connection cross sectional shape of bulge loop in the prior art, and creates a kind of pipe expander of bulge loop right-angled trapezium stainless steel tube.

In order to achieve the above object, the utility model has adopted following technical proposals:

The pipe expander of bulge loop right-angled trapezium stainless steel tube, comprise base, column, the locating shaft bearing, the location lid, handle, adjusting nut, top board, adjusting rod, screw mandrel, the location drive end bearing bracket, the internal mold roller, the external mold roller, bearing block, fastening bolt, spring, described internal mold roller is provided with the convex surface that is shaped as right-angled trapezium, the external mold roller is provided with and the identical groove of stainless steel tube ring expansion shape, its roller external diameter must be less than the internal diameter of stainless steel tube, adopt the punch roller, troughing roller is at the actuating pressure backspin tumbler molded bulge loop of opposite position at the punch roller, internal mold roller shaft core and bearing block keep vertical relation, bearing block is installed on the column, by screw mandrel and top board it is radially slided vertically at column; Column is fixed on the base, and the external mold roller is installed on the locating shaft bearing, the mutual keeping parallelism relation of the axle core of core wheel and internal mold roller; Described location lid and locating shaft bearing, its corresponding position is provided with and the isometrical annulus of pipe fitting external diameter, stainless steel pipe is located moulding in the bulge loop process, make bulge loop indeformable with rock, pipe fitting processed clamps not rock and is rotated into bulge loop under its effect, can prevent in the process of radial effect power that like this bulge loop from protruding, cause not defective such as rounding.

Description of drawings

Fig. 1 is the utility model structure chart;

Fig. 2 is the A-A cutaway view of the utility model Fig. 1.

The number in the figure explanation:

1-base 2-clamp nut 3-internal mold bearing 4-handle 5-top board

6-screw mandrel 7-adjusting rod 8-cross recessed countersunk head sscrew 9-bearing block

10-location drive end bearing bracket 11-internal mold roller 12-stainless steel tube 13-hex bolts

14-external mold roller 15-external mold bearing 16-locating shaft bearing 17-locatees gland

18-column 19-spring 20-rotary sleeve

The specific embodiment

As Fig. 1, shown in 2, the pipe expander of the utility model bulge loop right-angled trapezium stainless steel tube, column 18 and location drive end bearingbracket 10 are fixed on the base 1,bearing block 9 is installed on the column,top board 5 is provided with screwed hole, bearing block is slided up and down by the screwed hole and the screw mandrel rotation of top board in the radial direction at column, internal mold roller 11 is installed on the bearing block, the axle core and the bearing block of internal mold roller keep vertical relation,external mold roller 14,hex bolts 13 and external mold bearing 15 are installed on the locating shaft bearing 16, the axle core of the axle core of external mold roller and internal mold roller keeps relation parallel to each other, the locating shaft bearing is equipped with location gland 17, makestainless steel tube 12 just clamp rotational forming to it in the protruding process, the effect of this structure is to overcome not defective such as rounding of ring that stainless steel pipe protrudes,clamp nut 2 andhandle 4 are fixed on the internal mold roller, onrotary sleeve 20, embed twointernal mold bearings 3, can rotate easily so in the course of the work so that bulge loop, spring 19 is installed on location gland and the cross recessed countersunk head sscrew 8, can automatically the location gland be opened after bulge loop finishes, the whole operation process is very convenient.

Claims (3)

1, the pipe expander of bulge loop right-angled trapezium stainless steel tube, comprise: base, column, locating shaft bearing, location lid, handle, adjusting nut, top board, adjusting rod, screw mandrel, location drive end bearing bracket, internal mold roller, external mold roller, bearing block, fastening bolt, it is characterized in that: the internal mold roller is provided with the trapezoidal convex surface in angle, external mold rolls on and is provided with and the identical groove of stainless steel tube ring expansion shape, and the roller external diameter is less than the internal diameter of stainless steel tube.

2, the pipe expander of bulge loop right-angled trapezium stainless steel tube according to claim 1, it is characterized in that: described internal mold roller is installed on the bearing block, internal mold roller shaft core and bearing block keep vertical relation, and bearing block is installed on the column, and it is radially slided vertically at column; Column is fixed on the base, and the external mold roller is installed on the locating shaft bearing, the mutual keeping parallelism relation of the axle core of core wheel and internal mold roller.

3, according to the pipe expander of the described bulge loop right-angled trapezium of claim 1 stainless steel tube, it is characterized in that: described location lid and locating shaft bearing, its corresponding position is provided with and the isometrical annulus of pipe fitting external diameter, makes stainless steel pipe locate moulding in the bulge loop process.

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