CN102699193A

CN102699193A - Forming die for compression moulding semi-circular pipe and processing method of forming die

Info

Publication number: CN102699193A
Application number: CN2012101748383A
Authority: CN
Inventors: 范晖; 路云霄
Original assignee: Shanghai Boiler Works Co Ltd
Current assignee: Shanghai Boiler Works Co Ltd
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2012-10-03
Anticipated expiration: 2032-05-30
Also published as: CN102699193B

Abstract

The invention discloses a forming die for compression moulding a semi-circular pipe, which comprises a lower die, wherein the lower die is connected with an upper die through inner rings, and an outer ring is arranged at the peripheries of the inner rings. A processing method of the forming die for compression moulding the semi-circular pipe comprises the following steps that step 1, the inner rings are sleeved at a lower projection on the lower die; step 2, then, the outer ring surrounds the outer parts of the inner rings, and plays the role of fixing; step 3, a blank with a rectangular cross section is coiled into a barrel shape, and the two ends of the blank are welded together to form the blank of the semi-circular pipe; step 4, the prepared blank is put in a groove which is formed by the lower projection and the inner rings; step 5, the bottom end of an upper projection is aligned to the center of the blank until the upper die is completely compressed onto the inner rings; and step six, the upper die and the outer ring are sequentially removed, then, the inner rings which are dividedly equally are removed one by one, so the semi-circular pipe which is compression moulded is obtained. The die has the characteristics of less material consumption, high working efficiency, low requirements on welding combination, simple structure and high material utilization rate.

Description

A kind of compacting semi-ring pipe forming mould and processing method

Technical field

The present invention relates to a kind of compacting semi-ring pipe forming mould and processing method, belong to semi-ring pipe formation die tool field.

Background technology

In certain chemical engineering project, because product structure adopts a kind of ring-type semi-ring pipe.Its material is expensive incoloy825, and basic in the past the employing is divided into up and down that two halves sheet compacting back assembly welding becomes endless tube, earlier with plate circlewise under the material, suppresses, to waste of material big (main ring flat-plate stock utilization is low) during compacting again; The welding combination is had relatively high expectations.

Summary of the invention

The objective of the invention is to solve that waste of material is big, the welding combination requires high problem, provide that a kind of spillage of material is few, high efficiency, welding combination require low, simple in structure, that stock utilization is high compacting semi-ring pipe forming mould and processing method.

In order to achieve the above object, the invention provides a kind of compacting semi-ring pipe forming mould, it is characterized in that, comprise counterdie, counterdie is connected with patrix through inner ring, and the periphery of inner ring is provided with the outer ring.

Preferably, described inner ring is divided at least 3 equal segments.

Preferably, form the cavity body of mould of sealing between the lower convexity on the described counterdie, the raising on the patrix and the inner ring, closely be connected between lower convexity and the raising.

Preferably, described lower convexity is identical with the size shape of raising.

A kind of processing method that adopts like the compacting semi-ring pipe moulding of above-mentioned mould is characterized in that, may further comprise the steps:

Step 1 is enclosed within inner ring on the lower convexity on the counterdie;

Step 2 is trapped among the inner ring outside with the outer ring again, plays fixation;

Step 3 is that rectangular blank rolls into tubular with cross section, and welds appropriate longitudinal joint, forms the blank of tubulose;

Step 4 is put into lower convexity and the formed groove of inner ring with ready blank;

Step 5 is aimed at the center of blank with the bottom of raising, through patrix blank is pushed, and till being pressed onto patrix on the inner ring fully, makes the flange simultaneously of both sides up and down of blank;

Step 6 removes patrix and outer ring successively, and the inner ring that will be divided into equal portions subsequently removes one by one, removes counterdie at last, and whole pressing process finishes, and promptly obtains the semi-ring pipe of compression moulding.

Preferably, the internal diameter of the blank in the said step 4 is identical with the external diameter of lower convexity top, raising bottom, and the thickness of blank is big or small identical with cavity body of mould, and the height of blank is greater than the height of inner ring.

The present invention adopts built up cavity, reaches both sides flange moulding simultaneously up and down, realizes a compression moulding, is convenient in demoulding reliably through the inner ring equal portions being divided, being made.Mould of the present invention, simple in structure, adopt drawing method of the present invention, applicability is stronger, and pressing process is easy, reduces the back of burst compacting in the past welding combination difficulty, improves the processing operating efficiency; Reduce the raw material loss, improve stock utilization (utilization rate of raw materials 13% is increased to 98%), burst compacting in the past; Blank is circular sheet material, and interior ring center material can't be utilized basically, and existing method can be with rectangularity under the sheet material; Again through the synthetic tubular blank of soldering group; Reducing welding combination requirement, greatly improve stock utilization, is a kind of forming method sheet material preferably.

Description of drawings

Fig. 1 is a kind of pressing structure sketch map of suppressing semi-ring pipe forming mould.

Description of reference numerals:

1 is inner ring, and 2 is counterdie, and 3 is the outer ring, and 4 is blank, and 5 is patrix, and 6 is lower convexity, and 7 is raising, and 8 is cavity body of mould.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the present invention.

Embodiment 1

As shown in Figure 1, be a kind of pressing structure sketch map of suppressing semi-ring pipe forming mould.A kind of compacting semi-ring pipe forming mould, counterdie 2 is connected with patrix 5 through inner ring 1, and the periphery of inner ring 1 is with outer ring 3.

Inner ring 1 is divided at least 3 equal segments, forms the cavity body of mould 8 of sealing between the lower convexity 6 on the counterdie 2, the raising 7 on the patrix 5 and the inner ring 1, closely is connected between lower convexity 6 and the raising 7, and lower convexity 6 is identical with the size shape of raising 7.

During the moulding of compacting semi-ring pipe, its processing method may further comprise the steps: earlier inner ring 1 is enclosed within on the lower convexity 6 on the counterdie 2; Again outer ring 3 is trapped among inner ring 1 outside, plays fixation; With cross section is that rectangular blank rolls into tubular, and welds appropriate longitudinal joint, forms the blank 4 of tubulose; Wherein, The internal diameter of blank 4 is identical with the external diameter of lower convexity 6 tops, raising 7 bottoms, and the thickness of blank 4 is big or small identical with cavity body of mould 8, and the height of blank 4 is greater than the height of inner ring 1; Ready blank 4 is put into lower convexity 6 and inner ring 1 formed groove; The center of blank 4 is aimed in the bottom of raising 7, push, till being pressed onto patrix 5 on the inner ring 1 fully, make the flange simultaneously of both sides up and down of blank 4 through 5 pairs of blanks 4 of patrix; Successively patrix 5 and outer ring 3 are removed, the inner ring 1 that will be divided into equal portions subsequently removes one by one, removes counterdie 2 at last, and whole pressing process finishes, the remaining semi-ring pipe that is compression moulding.

The present invention adopts built up cavity, reaches both sides flange moulding simultaneously up and down, realizes a compression moulding, is convenient in demoulding reliably through the inner ring equal portions being divided, being made.

Claims

1. a compacting semi-ring pipe forming mould is characterized in that comprise counterdie (2), counterdie (2) is connected with patrix (5) through inner ring (1), and the periphery of inner ring (1) is provided with outer ring (3).

2. a kind of compacting semi-ring pipe forming mould as claimed in claim 1 is characterized in that described inner ring (1) is divided at least 3 equal segments.

3. a kind of compacting semi-ring pipe forming mould as claimed in claim 1; It is characterized in that; Form the cavity body of mould (8) of sealing between lower convexity (6) on the described counterdie (2), the raising (7) on the patrix (5) and the inner ring (1), closely be connected between lower convexity (6) and the raising (7).

4. a kind of compacting semi-ring pipe forming mould as claimed in claim 3 is characterized in that described lower convexity (6) is identical with the size shape of raising (7).

5. one kind is adopted the processing method of the compacting semi-ring pipe moulding of mould according to claim 1, it is characterized in that, may further comprise the steps:

Step 1 is enclosed within inner ring (1) on the lower convexity (6) on the counterdie (2);

Step 2 is trapped among inner ring (1) outside with outer ring (3) again, plays fixation;

Step 3 is that rectangular blank rolls into tubular with cross section, and welds appropriate longitudinal joint, forms the blank (4) of tubulose;

Step 4 is put into lower convexity (6) and the formed groove of inner ring (1) with ready blank (4);

Step 5 is aimed at the center of blank (4) with the bottom of raising (7), through patrix (5) blank (4) is pushed, and till patrix (5) being pressed onto fully inner ring (1) and going up, makes the flange simultaneously of both sides up and down of blank (4);

Step 6 removes patrix (5) and outer ring (3) successively, and the inner ring (1) that will be divided into equal portions subsequently removes one by one, removes counterdie (2) at last, and whole pressing process finishes, and promptly obtains the semi-ring pipe of compression moulding.

6. a kind of processing method of suppressing the moulding of semi-ring pipe as claimed in claim 5; It is characterized in that; The internal diameter of the blank in the said step 4 (4) is identical with the external diameter of lower convexity (6) top, raising (7) bottom; The thickness of blank (4) is big or small identical with cavity body of mould (8), and the height of blank (4) is greater than the height of inner ring (1).