CN2133380Y

CN2133380Y - Thin pipe developing unit

Info

Publication number: CN2133380Y
Application number: CN 92234150
Authority: CN
Inventors: 郭湘泗
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-04
Filing date: 1992-10-04
Publication date: 1993-05-19
Anticipated expiration: 2002-10-04

Abstract

The utility model relates to a thin pipe expanding unit, comprising a retention device for clamping pipes, and a pressure device forcing on the ports of pipes. The retention device comprises right and left two caliper bodies whose opposite sides are provided with a plurality of semicircular grooves with different diameters, and the groves are formed into a plurality of jaws with different diameters. The pressure device comprises a bracket, a lead screw arranged in the screw hole opened in the center of the top of the bracket, a pressure head on the lower end of the lead screw, and a wrenching lever on the upper end of the lead screw. The retention device can clamp and position the pipe, and the pressure head can be squeezed in the opening of the pipe by the rotation of the lead screw to make the pipe expand.

Description

Thin pipe developing unit

The utility model relates to a kind of device that is used to expand the termination bore of thin-wall pipe.

When connecting various pipe fitting, when particularly connecting the metal tube of thin-walled, often need the bore of one of interconnective two terminations is enlarged, to realize comparatively simple sleeve attaching.Because metal tube is harder, be difficult to resemble and utilize its elasticity enlarging plastics or the rubber tube, finish the enlarging of metal tube so need special-purpose enlarging equipment usually, though this special-purpose enlarging equipment operating efficiency is higher, but complex structure, bulky and heavy, carry when being not easy to outdoor construction, be unfavorable for that also amateur producer or family use.

The purpose of this utility model be to provide a kind of simple in structure, volume is little in light weight, and the small-sized hand-operated thin-wall pipe mouth expander of high-effective and labour-saving.

Above-mentioned purpose of the present utility model is achieved in that by a left side that has semi-circular recesses on the opposite face, right caliper body is configured to the pipe fitting fixing device of clamping pipe fitting to be processed, left and right sides caliper is fastening by screw, by support, the leading screw that matches with screw on the support, the moving bar of the conical indenter of leading screw lower end and leading screw upper end constitutes pressue device, support bottom and caliper bottom surface are slidingly matched, that is to say, support can vertically move along caliper, and caliper can only pass from the center macropore of support, can not shift out the encirclement of support from the support bottom, support is roughly rectangle, leading screw screws in from the screw of support upside central authorities, moving bar is vertical with leading screw to be provided with, so that utilize the lever principle rotating threaded shaft.During use, the pressure head of leading screw lower end is aimed at the pipe fitting port that is clamped by caliper, thereafter with leading screw gradually in the precession mouth of pipe because pressure head is tapered and maximum gauge greater than the pipe fitting internal diameter, therefore the bore of pipe fitting end portion can be enlarged.For ease of processing the pipe fitting of different bores, caliper is provided with the different groove of a plurality of diameters.

From above-mentioned explanation as can be seen, mouth expander of the present utility model only is made of the fixing device that does not need special complex parts and pressue device two parts, and structure is very simple, and volume is also less, and two parts are also separable.So the utmost point is easy to carry, and drives leading screw with moving bar, and is also very laborsaving.

Below in conjunction with embodiment and accompanying drawing thereof concrete structure of the present utility model is described.

Fig. 1 is the perspective view according to the thin-wall pipe mouth expander that the utility model proposes.

As shown in Figure 1, this thin-wall pipe mouth expander is made of fixing device 1 and pressue device 2.Fixing device 1 comprises left caliper 11, right caliper body 12 and secure component, secure component is made up of the movable joint screw 13 and the wing nut 14 of the through hole that passes left and right caliper two ends, be provided with the semi-circular recesses of a plurality of different-diameters at the opposite side of left and right sides caliper, these grooves constitute the jaw 15 of a plurality of different-diameters after left and right caliper links to each other, so that the pipe fitting of clamping different-diameter.During use, loosen wing nut 14 earlier, pipe fitting 3 is inserted in the jaw 15 of respective diameters, fastening nut 14 then.Pressue device 2 comprises support 21, leading screw 22, pressure head 23 and moving bar 24, support 21 is roughly rectangular, its top side central authorities have one with the screw of leading screw 22 threaded engagement, the bottom side be do not seal an opening arranged in other words conj.or perhaps, the size of this opening left and right directions is greater than the diameter of maximum jaw, but the gross thickness W less than left and right sides caliper after fastening so neither hinders the pipe fitting location, can guarantee again pipe fitting is exerted pressure, pressure head 23 is the taper of lower end band point, its maximum gauge is greater than the diameter of maximum jaw, and for ease of cooperating with pressure head 23 and being shaped, jaw 15 upper port parts are tapered.Moving bar 24 is metal bar always, and it passes a through hole of leading screw upper end, and to come rotating threaded shaft be labour-saving very by moving it, is the reliability that increases fixing device, and the jaw inwall can be processed with fine thread.Pressure head also can be established vary in size a plurality of, so that change as required, in this case, pressure head and leading screw adopt threaded engagement, and not hard to imagine, the utility model also can be used for processing some nonmetal pipe fitting, as plastic tube.

Claims

A kind of thin-wall pipe mouth expander, this is made up of the fixing device 1 of clamping pipe fitting and the pressue device 2 of the line up application of force, it is characterized in that, fixing device 1 comprises left caliper 11, right caliper body 12 and secure component, the opposite side of left and right sides caliper is provided with the different semi-circular recesses of a plurality of diameters, after secure component closely connects left and right sides caliper, described groove constitutes the different jaw of a plurality of diameters 15, pressue device 2 comprises support 21, leading screw 22, pressure head 23 and moving bar 24, in the support 21 is rectangle, central authorities are surveyed on its top a screw that cooperates with leading screw 22, there is an opening bottom side, and the width of the left and right directions of opening is greater than the jaw diameter of maximum, but less than the gross thickness W of left and right sides caliper on left and right directions, conical indenter 23 is installed in the lower end of leading screw 22, and moving bar 24 is vertically installed in the upper end.