CN2331451Y

CN2331451Y - Mould for bending processing metal round pipe

Info

Publication number: CN2331451Y
Application number: CN 98236836
Authority: CN
Inventors: 卢升
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-06
Filing date: 1998-03-06
Publication date: 1999-08-04
Anticipated expiration: 2008-03-06

Abstract

The utility model discloses a mould for bending processing a metal round tube. The utility model is characterized in that the working surface of an upper mould is made into a downwards convex circular arc surface provided with a groove; a lower mould is mainly composed of a mould body, a mould plate, a guide column and a spring, and the mould plate is composed of two movable plates hinged with vertical plates at two sides of the mould body; the lower parts of the movable plates are provided with rolling wheels, and the mould plate is provided with the groove which is perpendicular to the shaft line of a hinged point between the movable plates; the guide column is arranged on the bottom plate of the mould body, the upper end surface of the guide column is contacted with the rolling wheels after positioned under the action of the spring and a positioning piece at the lower end of the spring, the mould plate can keep horizontal, and the guide column can be arranged on a pressing machine. The upper mould moves down in use, the two movable plates rotate down, and tubes contained in the grooves of the upper and the lower moulds are bent for forming. The utility model has the advantages of convenient operation, low processing cost, etc.

Description

A kind of mould of bending machining metal circular tube

The utility model relates to metal pipe material bending processing technology field, is a kind of mould of bending machining metal circular tube definitely.

At present, the metal pipe material bending machining mainly is to utilize special-purpose bending pipes machine to finish, and the subject matter that the bending machining of utilizing this equipment to carry out tubing exists is: 1, the cost of special equipment is higher, is difficult to popularization and application; 2, productivity ratio is lower, and processing cost is higher.

The purpose of this utility model is can be installed on the existing UP machine for people provide a kind of, finishes the bending pipes processing mold, so that overcome above-mentioned shortcoming.

The purpose of this utility model is to realize like this, it is made up of upper die and lower die, on touch the lower end working face and make down protruding arc surface, this arc surface curvature is identical with the bending section axis curvature that is bent tubing, along this arc surface, and be shaped on the groove that the cross section is circular arc perpendicular to its generatrix direction, and the curvature of this groove cross section circular arc and bottom land camber line is identical with aforementioned tubes cylindrical curvature and bending section internal diameter curvature thereof respectively, and this groove active section degree of depth equals described tubing exradius at least; Above-mentioned counterdie is the die body of " Qian " shape by the cross section, template, guide pillar and spring constitute, this template is made up of two portable plates that are articulated in die body vertical plates on both sides upper end, this makes cross section semicircular in shape groove perpendicular to described two portable plate hinge axis directions in the edge above template, this depth of groove equals the aforementioned tubes exradius at least, each hinged at least one roller below two portable plates; Fixedly install locating piece on described die body one cant board, the on-fixed end of this locating piece can insert in the described movable plate body of its underpart, and its this end bottom is made convex body, a middle part and made a cylinder; Above-mentioned guide pillar vertically is installed on the die body base plate slidably, makes it the upper end surface in contacting with above-mentioned two rollers and making on the position of maintenance level above the template under keeper that is arranged at its lower end and above-mentioned spring force effect; In use, the convex globoidal summit is positioned at two portable plate abutment joint places of counterdie under this patrix, and these two grooves of touching up and down are in relative position.

The utility model compared with prior art has the following advantages after realizing: 1, simple in structure, cheap, can finish the bending pipes operation by widely used UP machinery, thereby easy to utilize.2, be convenient to operation, the production efficiency height, thereby can reduce other part manufacturing cost.

Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A profile of Fig. 1.

As seen from the figure, the utility model is made up of patrix 1 and counterdie, and cylindrical shape is made in the upper end of patrix 1, and this cylinder upper end axle center part is shaped on a vexed hole of screw thread; The die head body is made in this cylindrical lower end, the working surface of this die head body is made down protruding arc surface, the curvature of this arc surface is identical with the bending section axis curvature that is bent tubing, along this arc surface, and be shaped on the groove 25 that the cross section is circular arc perpendicular to its generatrix direction, the curvature of this groove cross section circular arc and this groove bottom land camber line cylindrical curvature and the bending section internal diameter curvature thereof with processed tubing respectively is identical, and the degree of depth of this groove equals the exradius of (also can be slightly larger than) processed tubing; Above-mentioned counterdie mainly is to be made of die body 13, template, guide pillar 11, spring 12, wherein die body 13 is by the base plate that is positioned at its underpart, the supporting seat 6, the supporting seat 15 that are welded in two risers of base plate both sides and are fixedly mounted on this two risers upper end medial surface by connection nut 5,16 are respectively formed, and its cross sectional shape is the assembly of " " shape; Certainly, supporting seat 6 and supporting seat 15 also can be directly welded on two risers, and the formula structure makes it to become one; Above-mentioned template is made up of two

portable plates

19,23, this

portable plate

19,23 is articulated on the supporting seat 15 and supporting seat 6 of die body vertical plates on both sides upper end respectively by bearing pin 4, the groove 26 of a cross sectional shape semicircular in shape is made perpendicular to above-mentioned bearing pin 4 axis directions in the edge on template, this groove is distributed on two portable plates, and depth of groove equals (also can be slightly larger than) processed tubing exradius; The relative end end of two portable plates fixedly mount a roller support 8, roller support 18 respectively below by connecting nut 7, on this two roller support respectively by bearing pin 9, hinged installation roller 10; This hinged number of rollers that is installed on each portable plate can be one, also can be a plurality of; Above-mentioned guide pillar 11 is made the bearing pin shape that an end has shoulder, and the through hole on its axis body cylindrical and the above-mentioned die body base plate matches, and the crack cooperates between the two, and this axis body small end is shaped on threaded post; After being nested with above-mentioned spring 12 on this guide pillar axis body cylindrical, be inserted in the through hole 24 on the die body base plate, this nut is adjusted by setscrew nut 14 location in its lower end, makes the guide pillar upper end surface in contacting with above-mentioned two rollers, and makes on the position of maintenance level above the template.

Cant board upper end at above-mentioned die body fixedly mounts locating pieces 3 by nut 2, in this locating piece diagram right-hand member bottom energy insertion activity plate body, both matched in clearance, a convex body is made in this insertion end end face bottom, make a cylinder on convex body top, this makes cross sectional shape and the identical semicircle cambered surface of groove cross sectional shape on this portable plate above convex body, when this portable plate was horizontal, this two halves arc surface can smoothly join; Be positioned at the cylinder on above-mentioned convex body top, make highly lower cylinder, its diameter and processed tubing aperture are complementary, the contact of both gaps, and the round heart is contained in the groove cross section on the above-mentioned portable plate of this column axis when being horizontal.

In use, this cylinder inserts in the tubing one end endoporus, and this convex body then contacts with this end outside of tubing, makes tubing locate and be convenient to the effect of its bending thereby locating piece is played.

Bending pipes processing for convenience prevents its Internal Hole Deformation, has also prepared a core bar 17, in order to fill in the tubing one end endoporus.

In use, patrix can be connected on the plunger 22 of hydraulic press by its vexed hole of screw thread of making, upper end or directly be plugged in by the patrix cylinder on the slide block 21 of punching machine; And counterdie is fixed on the base plate, it is horizontal above template, make the arc surface summit of patrix lower end align two portable plate abutment joint places of counterdie, make two grooves on the upper and lower mould be in the relative position place.Then, above-mentioned core bar 17 will be inserted in the shell material 20 1 end endoporus, again this shell material is placed in the groove on the above-mentioned template, and its another end endoporus is nested with on the cylinder of above-mentioned locating piece end, afterwards, start forcing press patrix is moved down, can make the shell material be bent shaping.

Claims

1, a kind of mould of bending machining metal circular tube, it is characterized in that, it is made up of upper die and lower die, on touch the lower end working face and make down protruding arc surface, this arc surface curvature is identical with the bending section axis curvature that is bent tubing, be shaped on the groove that the cross section is circular arc along this arc surface and perpendicular to its generatrix direction, the curvature of this groove cross section circular arc and bottom land camber line is identical with described tubing cylindrical curvature and bending section internal diameter curvature thereof respectively, and this groove active section degree of depth equals described tubing exradius at least; Described counterdie mainly is the die body of " " shape by the cross section, template, guide pillar and spring constitute, this template is made up of two portable plates that are articulated in die body vertical plates on both sides upper end, this makes cross section semicircular in shape groove perpendicular to described two portable plate hinge axis directions in the edge above template, this depth of groove equals described tubing exradius at least, each hinged at least one roller below two portable plates; On described die body one cant board, fixedly install locating piece, the on-fixed end of this locating piece can insert in the described movable plate body of its underpart, a convex body is made in its this end bottom, the middle part is made a described guide pillar of cylinder and vertically is installed on slidably on the die body base plate, and it makes it the upper end surface in contacting with described two rollers and making on the position of maintenance level above the template under keeper that is arranged on its lower end and described spring force effect; In use, the convex globoidal summit is positioned at two portable plate abutment joint places of counterdie under this patrix, and these two grooves of touching up and down are in relative position.

2, the mould of a kind of bending machining metal circular tube according to claim 1 is characterized in that, makes the semicircle cambered surface above the described convex body, and this cambered surface can smoothly be joined with the groove surfaces on the described portable plate that is in horizontal level; Described column diameter and described tubing aperture are complementary, both gap contacts, and this column axis contains the round heart by the groove cross section circular arc on the described portable plate that is horizontal.