CN-224209102-U - Vacuum valve of die-casting integrated die

Abstract

The utility model provides a vacuum valve of mould of integration die-casting, includes die casting mould, vacuum valve, hydro-cylinder, exhaust tube, vacuum valve, hydro-cylinder are installed respectively in the inside vacuum valve installation cavity and the hydro-cylinder installation cavity that sets up of die casting mould, the case that vacuum valve inner chamber set up connects the hydro-cylinder, the vacuum valve inner chamber extends to the die casting mould outside through the exhaust tube, the inner chamber of vacuum valve includes the guide section, the section of bleeding, the seal section, be equipped with the seal cover in the guide section, one side of section of bleeding is equipped with the mounting hole, install exhaust tube and section of bleeding intercommunication in the mounting hole, the seal section is the shoulder hole, and wherein the minor diameter section diameter is the same with the section diameter of bleeding, and the well diameter section is the straight face section for form straight face seal with the straight face of case end, major diameter section intercommunication die cavity, be equipped with first inclined plane between minor diameter section and the well diameter section for form the inclined plane seal with the inclined plane of case end, be equipped with the guide inclined plane between major diameter section and the major diameter section.

Inventors

• PEI FEI
• HE WENJIE
• YU HONG
• HUANG JUN
• PAN WUBING
• Song yaxing
• LI WENJUN
• ZHANG SHIBO
• REN FEI
• WANG XINGPING
• ZHANG YONGFA

Assignees

• 辰致(重庆)轻量化科技有限公司

Dates

Publication Date

20260508

Application Date

20250604

Claims (6)

1. 1. The utility model provides a vacuum valve of mould of integration die-casting, includes die-casting mould (1), vacuum valve (2), hydro-cylinder (3), exhaust tube (4), vacuum valve (2), hydro-cylinder (3) are installed respectively in vacuum valve installation cavity and hydro-cylinder installation cavity (5) that die-casting mould (1) inside set up, case (6) that vacuum valve (2) inner chamber set up connect hydro-cylinder (3), vacuum valve (2) inner chamber passes through exhaust tube (4) and extends to die-casting mould (1) outside, wherein, the inner chamber of vacuum valve (2) includes direction section (20), exhaust section (21), seal section (23), be equipped with seal cover (201) in direction section (20), one side of exhaust section (21) is equipped with mounting hole (22), install exhaust tube (4) and exhaust section (21) intercommunication in mounting hole (22), seal section (23) are the shoulder hole, and exhaust section (21) diameter are the same, and middle diameter section (232) are the straight face section for forming between seal section and the straight face (61) and seal section, seal section (232) are equipped with the straight face between seal section and the first inclined plane (61), a guide inclined plane (233) is arranged between the middle diameter section (232) and the large diameter section.
2. 2. The vacuum valve for an integrated die casting mold according to claim 1, wherein the first inclined surface (231) has an inclination angle of 45 DEG to 65 deg.
3. 3. The vacuum valve of an integrated die casting die according to claim 1, wherein the clearance between the intermediate diameter section (232) and the straight surface of the valve core end (61) is less than 0.05mm.
4. 4. The vacuum valve of an integrated die casting die according to claim 1, wherein the height of the large diameter section is larger than the height of the valve core end head (61).
5. 5. The vacuum valve for an integrated die casting mold according to claim 1, wherein the large diameter section is a horn-shaped opening.
6. 6. The vacuum valve of the integrated die casting die of claim 1, wherein a vacuum valve body pressing plate (7) is fixed outside the vacuum valve mounting cavity through bolts, and the vacuum valve body pressing plate (7) is used for fixing the vacuum valve (2) in the vacuum valve mounting cavity.

Description

Vacuum valve of die-casting integrated die Technical Field The utility model relates to the field of vacuum valves, in particular to a vacuum valve of an integrated die casting die. Background The existing integrated die-casting die is large in die cavity, the volume is about 3.3L-3.5L, the air extraction volume is 13-15L, the air extraction quantity is relatively large, and a plurality of hydraulic vacuum valves are required to be arranged for vacuumizing, so that the vacuum degree is ensured to be below 100mbar, and even below 50 mbar. However, only one inclined plane is arranged at the front end of the inner cavity of the existing vacuum valve and matched with the inclined plane of the valve core to form a seal. The structure has the defects that if aluminum scraps and greasy dirt which are not blown off exist between the inclined plane of the inner cavity of the vacuum valve and the inclined plane of the valve core, the inclined plane is easily not tightly sealed, and aluminum liquid flows into the vacuum valve to cause the blockage of the vacuum valve. After the valve core is used for a long time, plastic deformation of the valve core in the length direction also easily causes the vacuum valve to be sealed incompletely, and aluminum liquid flows into the vacuum valve to cause the blockage of the vacuum valve. Disclosure of Invention The utility model provides a vacuum valve of an integrated die-casting die, which is characterized in that a first inclined plane is arranged in an inner cavity of the vacuum valve, and the first straight plane is respectively matched with the inclined plane and the straight plane of a valve core to form a seal, so that the high tightness of the vacuum valve is ensured, and the blockage of the vacuum valve is avoided. The technical scheme includes that the vacuum valve of the integrated die-casting die comprises a die-casting die, a vacuum valve, an oil cylinder and an exhaust pipe, wherein the vacuum valve and the oil cylinder are respectively arranged in a vacuum valve installation cavity and an oil cylinder installation cavity which are arranged in the die-casting die, a valve core arranged in the inner cavity of the vacuum valve is connected with the oil cylinder, the inner cavity of the vacuum valve extends to the outside of the die-casting die through the exhaust pipe, the inner cavity of the vacuum valve comprises a guide section, an exhaust section and a sealing section, a sealing sleeve is arranged in the guide section, one side of the exhaust section is provided with an installation hole, the exhaust pipe is arranged in the installation hole and is communicated with the exhaust section, the sealing section is a stepped hole, the diameter of a small diameter section is identical with the diameter of the exhaust section, a middle diameter section is a straight section and is used for forming straight face sealing with the straight face of a valve core end, a large diameter section is communicated with a cavity, a first inclined face is arranged between the small diameter section and the middle diameter section and the inclined face of the valve core end is used for forming inclined face sealing, and a guide inclined face is arranged between the middle diameter section and the large diameter section. Preferably, the inclination angle of the first inclined plane is 45-65 degrees. Preferably, the clearance between the intermediate diameter section and the straight face of the valve core end is smaller than 0.05mm. Preferably, the height of the large-diameter section is larger than the height of the valve core end. Preferably, the large-diameter section is a horn-shaped opening. Preferably, a vacuum valve body pressing plate is fixed on the outer side of the vacuum valve installation cavity through bolts, and the vacuum valve body pressing plate is used for fixing the vacuum valve in the vacuum valve installation cavity. The utility model has the advantages that: 1. The vacuum valve and the valve core adopt double sealing, namely inclined surface sealing and straight surface sealing, and the double sealing can increase the effectiveness of sealing and avoid the untight sealing. 2. When the valve core of the vacuum valve is retracted, if the concentricity of the vacuum valve and the valve core is out of tolerance, namely, the straight face seal is in the condition of loose seal, the inclined face seal can compensate for deviation correction, and the integral sealing effect of the vacuum valve is ensured. 3. When the valve core of the vacuum valve is retracted, if the aluminum scraps and the oil stains remained on the side surface of the valve core can be scraped and rubbed off through the first straight surface of the vacuum valve, so that the integral sealing effect of the vacuum valve is ensured. Noun interpretation Integrated die casting ‌ integrated die casting ‌ is an innovative manufacturing process that integrates multiple complex part structures on a white body o