CN-115740164-B - Internal high-pressure flanging forming process

CN115740164BCN 115740164 BCN115740164 BCN 115740164BCN-115740164-B

Abstract

The invention discloses an internal high-pressure flanging forming process which comprises the following steps of firstly placing a blank on a corresponding lower die processing station, driving a main cylinder, driving an upper die to move in the direction of the lower die through the main cylinder, and then lifting the main cylinder after the main cylinder moves to the corresponding position of the lower die, C, circulating water supplementing, namely conducting water supplementing to a through hole at the bottom end of the channel ball through a pipeline of a water tank, D, sealing water by a central cylinder, namely moving the central cylinder to the through hole at the top of the channel ball when the water supplementing process is conducted, so as to achieve the purpose of sealing water at low pressure, and E, forming, namely continuously moving the central cylinder to the inside of the channel ball when the water supplementing is conducted to the channel ball continuously, so that internal high pressure is generated in the channel ball, the channel ball is expanded, and internal high-pressure forming is achieved. The processing technology has the beneficial effects that when the processing technology improves the processing efficiency, the situation that the processed product has cracks or uneven flanging width due to the problem of insufficient extension force of part of materials is avoided.

Inventors

RUAN ZONGLONG

Assignees

广东劦力智能科技有限公司

Dates

Publication Date: 20260505
Application Date: 20221221

Claims (3)

1. The internal high-pressure flanging forming process is characterized by comprising the following steps of: A. Placing a blank, namely firstly placing a channel ball at a corresponding lower die processing station; B. the master cylinder drives the upper die to move towards the direction of the lower die, and after the upper die moves to the corresponding position of the lower die, the master cylinder performs lifting so that the upper die and the lower die are completely sealed to achieve the purpose of die assembly; C. Circulating water replenishing, namely carrying out water replenishing process to a through hole at the bottom end of the channel ball through a pipeline of the water tank; D. The central cylinder seals water, namely, when the water supplementing process is carried out, the central cylinder moves towards the direction of the through hole at the top of the channel ball, so that the aim of sealing water at low pressure is fulfilled; E. when the channel ball is continuously replenished with water by circulating water, the central cylinder continuously moves towards the inside of the channel ball, so that the inside of the channel ball generates internal high pressure, and the channel ball expands, thereby realizing internal high pressure molding; e, in the process of preventing the circulating water from leaking, the C, circulating water replenishing and the D, central cylinder water sealing are carried out simultaneously; F. the circulating water leakage is prevented, namely, when the pipeline of the water tank carries out the water supplementing process on the channel ball, the channel ball is pressurized through the pressurizing cylinder; the method also comprises the step of pressure detection, which is used for detecting the pressure of the central cylinder and detecting the water supplementing pressure of the water tank; The step G is a return stroke, namely after the pressure detection is finished, the pressure release of the pressurizing cylinder and the pressure release of the central cylinder are sequentially carried out, the main cylinder is used for releasing the pressure, the main cylinder drives the upper die to finish the return stroke process, and finally, the processed channel ball is taken out from the lower die by workers; And B, driving the master cylinder, wherein the master cylinder further comprises a step B2, namely, in the process that the output end of the master cylinder drives the upper die to move downwards, when the upper die moves to a position 20mm above a ball of a channel to be processed, the master cylinder slows down the mould closing speed of the downwards movement.
2. The internal high-pressure flanging forming process of claim 1, wherein in the process of sealing water of the central cylinder, a worker can adjust the pressure of the central cylinder, so that the fact that the channel ball to be processed is directly scrapped due to excessive pressure of the central cylinder is avoided.
3. The internal high-pressure flanging forming process of claim 2, wherein the master cylinder is subjected to pressure relief work finally, so that pressure relief conditions in the die cavities of the upper die and the lower die can be effectively prevented, and the master cylinder achieves a pressure maintaining function.

Description

Internal high-pressure flanging forming process Technical Field The invention relates to the technical field of internal high-pressure forming, in particular to an internal high-pressure flanging forming process. Background The molding processing technology is an advanced manufacturing technology developed in recent years, is mainly used for molding hollow pipe fittings, and can mold a plurality of special-shaped cross-section pipe fittings with complex structures due to the good flexible formability; However, in the current market, the longer molding processing modes are respectively a casting molding process, a stamping molding process and a mechanical molding process, wherein the casting molding process has the defects of difficult control of molding flow, easy generation of cracks and air holes, large weight, complex subsequent processing, easy generation of cracks and deformation in a welding process, the stamping molding process has the defects of easy generation of transverse cracks at a longitudinal slotting position, uneven flanging width at a lute bag position, easy wrinkling and strain on the side surface, and the mechanical molding process has the defects of difficult control of bulging force, complicated bulging mechanism and process and easy generation of cracks; in summary, in the actual production and molding process, the cost needs to be reduced as much as possible, the mechanical performance is ensured, and the research and development period needs to be shortened as much as possible, so that a new molding process is needed. Disclosure of Invention Aiming at the defects, the invention aims to provide an internal high-pressure flanging forming process which can control bulging force, ensure flanging width and reduce cost processing cost. To achieve the purpose, the invention adopts the following technical scheme: A process for forming internal high-pressure flanging comprises the following steps of A, placing a blank, namely firstly placing a channel ball at a corresponding lower die processing station; B, driving a main cylinder, namely driving the upper die to move towards the direction of the lower die through the main cylinder, and after the upper die moves to the corresponding position of the lower die, lifting the main cylinder to enable the upper die and the lower die to be completely sealed so as to achieve the purpose of die assembly; and E, forming, namely continuously moving the central cylinder to the inside of the channel ball when the circulating water replenishing is carried out for the channel ball to replenish water, so that the inside of the channel ball generates internal high pressure, the channel ball expands, and the internal high pressure forming is realized. Preferably, the internal high-pressure flanging forming process further comprises a step E, wherein the circulating water is prevented from leaking, and when the water supplementing procedure is carried out on the channel ball by the pipeline of the water tank, the channel ball is pressurized by the pressurizing cylinder. Preferably, in the above-mentioned internal high pressure flanging molding process, in the step e, the circulating water is prevented from leaking, and the c-circulating water replenishing and the d-central cylinder water sealing are performed simultaneously. Preferably, the internal high-pressure flanging forming process further comprises the step of pressure detection, wherein the step of pressure detection is used for detecting the pressure of the central cylinder and detecting the water supplementing pressure of the water tank. The back stroke comprises the steps that after the pressure detection is finished, the pressure release of the pressurizing cylinder and the pressure release of the central cylinder are sequentially carried out, the main cylinder is used for releasing the pressure, the main cylinder drives the upper die to complete the back stroke process, and finally, the worker takes out the processed channel ball from the lower die. Preferably, in the internal high-pressure flanging forming process, the driving of the main cylinder further comprises the step B2 that the main cylinder slows down the mould closing speed of the downward movement when the upper mould moves to a position 20mm above the channel ball to be processed in the process that the output end of the main cylinder drives the upper mould to move downward. Preferably, in the above-mentioned internal high-pressure flanging molding process, in the process of sealing water for the central cylinder, a worker can adjust the pressure of the central cylinder, so that the fact that the channel ball to be processed is directly scrapped due to excessive pressure of the central cylinder is avoided. Preferably, in the internal high-pressure flanging molding process, the master cylinder finally performs pressure relief work, so that pressure relief situations in the die cavities of the upper die and the lower die can be effective