CN211803232U

CN211803232U - Thick wall elbow shaping mould

Info

Publication number: CN211803232U
Application number: CN202020128322.5U
Authority: CN
Inventors: 周琪琪
Original assignee: Shanghai Changqiang Heavy Industry Machinery Co ltd
Current assignee: Shanghai Changqiang Heavy Industry Machinery Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-10-30
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to the technical field of elbow bending dies, in particular to a thick-wall elbow shaping die, wherein a first arc-shaped female die is arranged at the lower left corner of a lower die, a second punch is fixed at the left central position of the lower die, a first punch is fixed at the lower central position of the lower die, one end of the first arc-shaped female die corresponds to the second punch, the other end of the first arc-shaped female die corresponds to the first punch, the first punch head and the second punch head are fixedly connected with an external punch press, the upper die and the first arc-shaped female die are provided with a second arc-shaped female die at the corresponding positions, after the upper die and the lower die are assembled, the first arc-shaped concave die and the second arc-shaped concave die are combined into a complete circular tube through die, compared with the prior art, the utility model discloses in can bend simultaneously and make and the plastic, make circularity meet requirements and lead to the ball rate and reach more than 95%, filled internal large-scale thick wall elbow hot forging back circularity not round and lead to the ball rate not up to standard vacancy.

Description

Thick wall elbow shaping mould

Technical Field

The utility model relates to a curved system mould technical field of elbow, specific saying is a thick wall elbow plastic mould.

Background

The thin-wall elbow is generally manufactured by pushing an elbow pushing machine, but the thick-wall elbow cannot be manufactured by pushing, and the traditional thick-wall elbow bending method needs to forge a pipe first, machine a straight pipe by using gold, bend, shape, thermally treat, saw excess materials at two ends and machine a groove by using gold, so that the processing period is long and raw materials are wasted.

Therefore, the design of the bend reshaping die which is suitable for the production of the thick-wall bend and can reduce the cost is very necessary.

Disclosure of Invention

The utility model discloses broken through prior art's a difficult problem, designed a elbow plastic mould that is fit for thick wall elbow production and can reduce cost.

In order to achieve the purpose, the utility model discloses a thick wall elbow plastic mould, including last mould, lower mould, its characterized in that: the lower die comprises a lower die and is characterized in that a first arc-shaped female die is arranged at the lower left corner of the lower die, a second punch is fixed at the left center of the lower die, the first punch is fixed at the lower center of the lower die, one end of the first arc-shaped female die corresponds to the second punch, the other end of the first arc-shaped female die corresponds to the first punch, the first punch and the second punch are connected and fixed to an external punching machine, a second arc-shaped female die is arranged at the position of the upper die corresponding to the first arc-shaped female die, and the first arc-shaped female die and the second arc-shaped female die are combined into a.

The shape of the first punch head and the second punch head is the same as that of the head end of the bending elbow.

Compared with the prior art, the utility model discloses in can bend system and plastic simultaneously, make circularity meet requirements and lead to the ball rate and reach more than 95%, filled internal large-scale thick wall elbow hot forging back circularity semicircle and lead to the not up to standard vacancy of ball rate.

Drawings

Fig. 1 is a schematic view of the lower mold structure of the present invention.

Fig. 2 is the structure schematic diagram of the utility model after the upper and lower dies are assembled.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a thick wall elbow plastic mould, including last mould, lower mould, the lower left corner position of lower mould 1 is equipped with convex die 2, and the left side central point of lower mould 1 rigidity has drift two 3, and the downside central point of lower mould 1 rigidity has drift one 4, and the one end of convex die 2 is corresponding with drift two 3, and the other end of convex die 2 corresponds with drift one 4, drift one 4 and drift two 3 are connected fixed external on the punching machine, convex die two has been seted up on going up mould 5 and the position that convex die 2 corresponds, goes up mould 5 and lower mould 1 compound die after, see fig. 2, and convex die 2 merges into complete pipe with convex die two and leads to the mould.

The utility model discloses well drift one 4 and drift two 3's shape is processed into the shape that accords with the elbow inner chamber by CNC.

In concrete implementation, forging pipe blank is the trapezoidal hollow tube of forging on special machine tool, and bending and plastic one shot forming on 1450T special machine tool at first will go up mould and lower mould and merge formation a complete circle, and the blank is pushed the mould by a drift extrusion from drift one, and the drift two pushes the mould again and makes the elbow final forming after targetting in place, the utility model discloses compare with prior art, two processes have been lacked than traditional handicraft, only need through forging the straight tube, bend plastic, heat treatment, golden processing groove just can obtain the elbow, and raw and other materials have saved 30%, are applicable to the plastic processing of thick wall elbow, make circularity meet the requirements and lead to the ball rate and reach more than 95%. The defects that after the large thick-wall elbow is hot forged, the roundness is not round and the ball passing rate does not reach the standard are filled.

Claims

1. The utility model provides a thick wall elbow plastic mould, includes mould, lower mould, its characterized in that: the die comprises a lower die (1), a first arc-shaped concave die (2) is arranged at the lower left corner of the lower die (1), a second punch (3) is fixed at the left center of the lower die (1), a first punch (4) is fixed at the lower center of the lower die (1), one end of the first arc-shaped concave die (2) corresponds to the second punch (3), the other end of the first arc-shaped concave die (2) corresponds to the first punch (4), the first punch (4) and the second punch (3) are connected and fixed on an external punching machine, a second arc-shaped concave die is arranged at the position, corresponding to the first arc-shaped concave die (2), of the upper die (5), and the second arc-shaped concave die are combined into a complete circular tube through die after the upper die (5) and the lower die (1) are.

2. A thick-walled elbow reshaping die as claimed in claim 1, wherein: the shape of the first punch head (4) and the second punch head (3) is the same as that of the head end of the bending elbow.