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Hydraulic controlled type latched rigid-plastic compound bulging and forming device for three-way pipe

A bulging and rigid technology, which is applied in the field of hydraulically controlled three-way pipe locking type rigid-plastic composite bulging forming devices, can solve the problems of low service life of punches, complex mold structure, and too small size of tube blanks that cannot be used. , to achieve the effect of preventing space increment

Inactive Publication Date: 2016-02-03
XINCHANG HANGDA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Compared with the liquid medium extrusion bulging method, although the plastic medium separation punch extrusion bulging method is more complicated, it avoids the expensive hydraulic pressure boosting system, so it has less equipment investment, high productivity and good forming effect. Good advantages, but it also has a low service life of the punch, a complex mold structure, and cannot be applied to occasions where the size of the tube blank is too small

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  • Hydraulic controlled type latched rigid-plastic compound bulging and forming device for three-way pipe
  • Hydraulic controlled type latched rigid-plastic compound bulging and forming device for three-way pipe
  • Hydraulic controlled type latched rigid-plastic compound bulging and forming device for three-way pipe

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Embodiment Construction

[0030] The present invention is further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0031] like Figure 4 As shown, it is a schematic structural diagram of an embodiment of a liquid-controlled three-way pipe lock-type rigid-plastic composite bulging forming device embodiment of the present invention. In this embodiment, the liquid-controlled three-way pipe lock-type rigid-plastic composite bulging forming device includes an upper half-mold 1 and a lower half-mold 2, and a circular tubular forming mold is arranged between the upper half-mold 1 and the lower half-mold 2. Cavity 3, the two ends of the forming cavity 3 are respectively equipped with bulging extrusion punches 4 that slide and fit with it, and the lower half mold 1 is provided with a branch forming cavity 5 whos...

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Abstract

A hydraulic controlled type latched rigid-plastic compound bulging and forming device for a three-way pipe. The device comprises an upper semi mold and a lower semi mold, wherein a forming cavity is formed between the upper semi mold and the lower semi mold; bulging extrusion punches are installed at two ends of the forming cavity respectively; a branch pipe forming cavity is formed in the lower semi cavity; a balancing punch is installed inside the branch pipe forming cavity; a rigid bulging inner mold is arranged between two bulging extrusion punches and comprises pushing rods located at two ends respectively; a forming inner mold block is arranged between two pushing rods; the forming inner mold block is connected with two pushing rods through a connecting rod mechanism; the axes of the pushing rods are parallel to the axis of the forming cavity and are installed inside corresponding bulging extrusion punches in a sliding fit mode respectively; a bulging liquid inlet and a bulging liquid outlet are formed in each bulging extrusion punch; a latch-type quick disassembly connection structure is arranged on one of the pushing rods; and thrust devices which are used for driving the bulging extrusion punches to slide in the forming cavity and driving the pushing rods to slide in the bulging extrusion punches are arranged at two ends of the forming cavity respectively.

Description

technical field [0001] The invention belongs to the technical field of non-cutting processing of pipes, and in particular relates to a liquid-controlled three-way pipe lock-type rigid-plastic composite bulging forming device. Background technique [0002] There are many types of pipe bulging, mainly divided into two types: rigid bulging and soft mold bulging. Rigid punch bulging is only suitable for bulging of axisymmetric bulging parts that do not require high shape and dimensional accuracy. When liquid, gas or elastomer is used as the pressure transmission medium for bulging, it is commonly called soft mold bulging. The liquid can be oil, emulsion or water, and the elastomer usually adopts polyurethane rubber or natural rubber. Due to its unique characteristics of being easy to be solid or liquid, and recyclable and reusable, paraffin wax is also used as a bulging pressure transmission medium, and has achieved good technical results in production. Therefore, according t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/033B21D37/10B21D37/00
Inventor 刘胜利
Owner XINCHANG HANGDA MACHINERY MFG
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