CN-122014883-A - Novel injection valve for injection beam

Abstract

The invention provides a novel injection valve for an injection beam, which is provided with a nozzle valve block fixed on the beam body of the injection beam, wherein the nozzle valve block is fixedly provided with two nozzle assemblies arranged up and down, the nozzle valve block is provided with an upper oil passage and a lower oil passage, each oil passage comprises an oil inlet passage and an oil outlet passage, two valve cores are arranged in the nozzle valve block, the two valve cores are respectively supported in the nozzle valve block through a rotating shaft and are arranged along the central line mirror image of the valve block, the valve cores are of a semi-cylindrical structure, an oil groove which is communicated with the oil inlet passage and the oil outlet passage is arranged on the cylindrical surface of the semi-cylindrical structure, the axis of the oil groove is perpendicular to the axes of the oil inlet passage and the oil outlet passage, a boss which protrudes outwards is arranged on the non-cylindrical surface of the semi-cylindrical structure, permanent magnets are embedded in the boss, and electromagnets are respectively arranged on the left side and the right side of the boss. The invention reduces the opening and closing force of the force valve to the greatest extent, thereby realizing the direct driving of the electromagnet safely, reliably, at high frequency and with low loss.

Inventors

• ZHANG LI

Assignees

• 汉投(深圳)科技有限公司

Dates

Publication Date

20260512

Application Date

20260316

Claims (4)

1. 1. A novel injection valve for an injection beam is characterized by comprising a nozzle valve block fixed on the injection beam body, wherein the nozzle valve block is fixedly provided with two nozzle assemblies arranged up and down, each nozzle valve block is provided with an upper group of oil channels and a lower group of oil channels, one end of each oil channel is communicated with an injection Liang Luti, the other end of each oil channel is communicated with the direction of a valve core through an oil hole I perpendicular to the oil channel, one end of each oil channel is communicated with the direction of the valve core through an oil hole II perpendicular to the oil channel, and the other end of each oil channel is communicated with the corresponding nozzle assembly; The valve core is arranged in the nozzle valve block, the two valve cores are arranged up and down, the two valve cores are respectively arranged corresponding to the two nozzle assemblies, the two valve cores are respectively supported in the nozzle valve block through corresponding rotating shafts and are arranged in a mirror image mode along the central line of the valve block, the valve cores swing along the corresponding rotating shafts to form a swinging valve core at a certain angle and realize the opening and closing action of the injection valve, the valve core is of a semi-cylindrical structure, an oil groove used for communicating an oil inlet channel with an oil outlet channel after the valve core swings by a small angle is arranged on the cylindrical surface of the valve core of the semi-cylindrical structure, the axis of the oil groove is perpendicular to the axis of the oil inlet channel and the axis of the oil outlet channel, the oil groove is in an open state when aligning with the oil hole I and the oil hole II, the oil groove is in a closed state when staggered with the oil hole I and the oil hole II, permanent magnets are embedded in the non-cylindrical surface of the valve body, electromagnets are respectively arranged on the left side and the right side of the boss, the two electromagnets are directly driven to swing, and the bosses of the two valve cores are oppositely arranged.
2. 2. The novel injection valve for an injection beam according to claim 1, wherein the opening and closing operation of the injection valve is performed by the alternating magnetic field of the electromagnets distributed on both sides of the permanent magnets embedded in the valve body.
3. 3. The novel injection valve for the injection beam of claim 1, wherein the permanent magnet in the boss of the valve core drives the valve core to rotate along the rotating shaft of the valve core, and one side of the boss of the valve core is an S pole, and the other side of the boss of the valve core is an N pole because of the permanent magnet in the boss of the valve core, namely, one side of the boss of the valve core, which is close to a beam body of the nozzle beam, is assumed to be the S pole, and one side of the boss of the valve core, which is close to the nozzle assembly, is assumed to be the N pole; When the two sides of the boss form the inner sides of two electromagnets which are surrounded in a pincerlike manner, namely, one sides of the electromagnets on the two sides facing the permanent magnet are both S poles, the valve core is attracted due to the fact that the magnetic poles on the left side of the boss repel the magnetic poles on the right side, so that the valve core rotates anticlockwise by a fixed small angle, and an oil groove positioned on the cylindrical surface of the top of the valve core is enabled to approach until the oil groove is aligned with the oil hole I and the oil hole II in the valve block, and an oil path is opened; on the contrary, when the inner sides of the two electromagnets are N poles, the boss of the valve core is repulsed by the magnetic poles on the right side of the valve core due to the attraction of the magnetic poles on the left side, so that the valve core rotates clockwise by a fixed small angle, and the oil groove on the cylindrical surface at the top of the valve core is far away until the oil hole I and the oil hole II in the valve block are completely staggered, and an oil way is closed.
4. 4. The novel injection valve for an injection beam of claim 1, wherein the fluid pressure applied to the valve core is radial, and the switching force of the valve core is radial tangential force.

Description

Novel injection valve for injection beam Technical Field The invention relates to the technical field of metal calendaring, in particular to a novel injection valve for an injection beam. Background The current injection valve of the nozzle beam is widely used as a pulse reciprocating plug-type valve, the switching force of the valve body mechanism and the acting direction of the liquid pressure are in the same direction and are in a reaction force, namely, the larger the liquid pressure is, the larger the switching driving force is, namely, if the switching driving force is larger, the magnetic force of the electromagnet is directly used for overcoming the liquid pressure to drive the switching, so that the large power is needed, the volume and the power consumption of the valve body are large, the miniaturization cannot be realized, and meanwhile, the fire is easy to occur because of the unsatisfactory heat dissipation. Therefore, the electromagnet-driven switch control valve in the market adopts an electromagnet to drive a small valve core to open and close (namely a pilot valve core) so that the pressure difference is formed between two opposite cavities of a main piston in the valve body, and then the main piston is driven to open and close by the pressure difference to realize the switch control of the valve body. Disclosure of Invention The invention aims to provide a novel injection valve for an injection beam, which changes the direction of opening and closing force of the valve to be in a mutually perpendicular relation with the direction of liquid pressure, so that the opening and closing force of the valve is exponentially reduced (the friction coefficient of a composite material bearing is only about 0.02, the length of a main power arm is added, and the opening and closing force is about several thousandths of the liquid pressure), thereby realizing the maximum reduction of the opening and closing force of the valve, and realizing the direct driving of an electromagnet safely, reliably, high-frequency and low-loss. In order to achieve the above purpose, the invention adopts the following technical scheme: The novel injection valve for the injection beam comprises a nozzle valve block fixed on the beam body of the injection beam, wherein the nozzle valve block is fixedly provided with two nozzle assemblies arranged up and down, the nozzle valve block is provided with two groups of oil channels, each group of oil channels comprises an oil inlet channel and an oil outlet channel, one end of the oil inlet channel is communicated with the injection Liang Luti, the other end of the oil inlet channel is communicated with the direction of the valve core through an oil hole I perpendicular to the oil inlet channel, one end of the oil outlet channel is communicated with the direction of the valve core through an oil hole II perpendicular to the oil inlet channel, and the other end of the oil outlet channel is communicated with the corresponding nozzle assembly; A valve core is arranged in the nozzle valve block; the valve core is of a semi-cylindrical structure, an oil groove used for communicating an oil inlet channel with an oil outlet channel after the valve core swings by a small angle is formed in the cylindrical surface of the valve core of the semi-cylindrical structure, the axis of the oil groove is perpendicular to the axis of the oil inlet channel and the axis of the oil outlet channel, the oil groove is in an open state when aligning with the oil hole I and the oil hole II, the oil groove is in a closed state when staggering the oil hole I and the oil hole II, a boss protruding outwards is arranged on the non-cylindrical surface of the valve body of the semi-cylindrical structure, a permanent magnet is embedded in the boss, electromagnets are respectively arranged on the left side and the right side of the boss, the electromagnets directly drive the valve core to swing, and the bosses of the two valve cores are arranged oppositely. The switching action of the injection valve is realized by the alternating magnetic field drive of the electromagnets distributed on the two sides of the permanent magnet embedded in the valve core. A permanent magnet is embedded in a boss of the valve core, so that one side of the boss is an S pole, the other side of the boss is an N pole, and if the boss of the valve core is the S pole at one side close to the nozzle beam body, the N pole at one side close to the nozzle assembly is the N pole; When the two sides of the valve core boss form the inner sides of two electromagnets which are surrounded in a pincerlike manner, namely, one sides of the electromagnets on the two sides facing the permanent magnet are both S poles, the valve core is attracted due to the fact that the magnetic poles on the left side of the boss repel the magnetic poles on the right side, so that the valve core rotates anticlockwise by a fixed small angle, and an oil groove on the cylindrica