A high pressure conversion mechanism

Abstract

The application provides a high-pressure conversion mechanism and relates to the field of high-pressure conversion devices. The high-pressure conversion mechanism comprises a main valve body, a first cavity is arranged in the main valve body, a supercharging cylinder connecting port is arranged on the first cavity, and the first cavity is communicated with a supercharging cylinder through the supercharging cylinder connecting port; a flow guide nozzle is slidably arranged in the first cavity, the flow guide nozzle is provided with a flow guide inlet hole and a flow guide outlet hole, and the flow guide outlet hole is communicated with the flow guide inlet hole; a reversing valve connecting block is provided with a reversing input hole and a reversing output hole, the reversing input hole is communicated with the reversing output hole, and the reversing input hole is connected with the first cavity. The technical problems of the existing one-mold multi-cavity forming process, such as too many parts of the equipment supercharging control system, difficult installation and arrangement, high manufacturing cost and high use cost, are improved.

Description

Technical Field

[0001] This invention relates to the field of high voltage conversion devices, and more specifically to a high voltage conversion mechanism. Background Technology

[0002] With the increasing popularity of lightweight hydraulic components in automotive chassis and body structures, production demand is growing daily. In order to improve production efficiency and product competitiveness, large-scale internal high-pressure forming equipment has been created with more functions. One forming mold is designed with multiple cavities (referred to as "one mold with multiple cavities"). Liquid is injected into all cavities at the same time to generate internal high pressure for forming. This not only places extremely high demands on the equipment's pressure control system, but also requires high precision in high-pressure control for each cavity.

[0003] To achieve multi-cavity molding in a single mold, the conventional method is to treat each cavity as a separate control object, equipped with a separate pressurization system and water injection mechanism. While this method is effective, it has many drawbacks. For example, as the number of cavities processed increases, the demand for key components such as ultra-high pressure boosters, hydraulic precision servo control systems, and high-pressure oil pipes and circuits also increases. The following drawbacks are particularly prominent:

[0004] 1. The numerous components make installation and layout difficult. The key core components are already very large, especially the entire private server system, which occupies almost more space than the equipment workbench. Furthermore, all components need to be connected through complex wiring, oil lines, and high-pressure resistant pipes. The intricate components lead to difficulties in layout and installation.

[0005] 2. The core components are expensive. Most core components such as turbocharger components, hydraulic servo valve components, and cooling systems need to be imported, which is expensive. The more components are needed, the higher the cost will be.

[0006] 3. The more components there are, the higher the maintenance cost. With the increasing number of pipelines, control switches, servo valves, etc., the large control system has a high cost for daily maintenance. In addition, during the internal high-pressure forming process, problems such as oil leakage and switch failure are inevitable, and inspection and repair will also face huge challenges.

[0007] 4. Independent systems are complex to program and operate. In addition to the numerous hardware facilities, multiple independent supporting systems also bring great inconvenience to software development and design, as well as actual parameter control and operation. At the same time, monitoring so many independent systems inevitably requires more independent display panels, which is not conducive to quickly discovering and troubleshooting abnormalities. Summary of the Invention

[0008] In view of the above-mentioned shortcomings of the prior art, the present invention provides a high-pressure conversion mechanism to improve the technical problems of the existing multi-cavity molding process, which has many components in the equipment pressure control system, is difficult to install and arrange, has high cost and high operating cost.

[0009] To achieve the above and other related objectives, the present invention provides a high-pressure conversion mechanism, comprising a main valve body, a first chamber within the main valve body, a booster cylinder connection port on the first chamber, the first chamber being connected to a booster cylinder through the booster cylinder connection port; a guide nozzle, slidably disposed within the first chamber, the guide nozzle having a guide inlet hole and a guide outlet hole, the guide outlet hole being connected to the guide inlet hole; and a reversing valve connecting block, the reversing valve connecting block having a reversing input hole and a reversing output hole, the reversing input hole being connected to the reversing output hole, the reversing input hole being connected to the first chamber.

[0010] In an exemplary embodiment of this application, there are no fewer than three guide holes, including a central guide hole concentric with the guide inlet hole, and the remaining guide holes arranged in a circumferential array on the guide nozzle with the axis of the central guide hole as the axis of rotation.

[0011] In an exemplary embodiment of this application, the diameter of the outflow hole is smaller than the diameter of the inflow hole, and the length of the outflow hole is smaller than the length of the inflow hole.

[0012] In an exemplary embodiment of this application, the end of the central guide hole is a conical surface, and the diameter of the central guide hole increases in the direction outward from the guide nozzle.

[0013] In an exemplary embodiment of this application, a sealing element and a moving mechanism are also included, wherein the moving mechanism drives the sealing element to close and open the reversing input port.

[0014] In an exemplary embodiment of this application, the moving mechanism includes an elastic member that presses against the sealing member to close the reversing input port.

[0015] In an exemplary embodiment of this application, the moving mechanism includes a diversion push rod and a driving mechanism. The driving mechanism drives the diversion push rod to move linearly, so that the diversion push rod drives the sealing member away from the reversing input hole, thereby opening the reversing input hole.

[0016] In an exemplary embodiment of this application, the reversing valve connecting block is provided with a flow divider nozzle, the reversing input hole is disposed at the end of the flow divider nozzle, the side wall of the flow divider nozzle is provided with a first connecting hole, and the reversing input hole and the reversing output hole are connected through the first connecting hole.

[0017] In an exemplary embodiment of this application, the side wall of the reversing valve connecting block is further provided with a first through hole, and the side wall of the diverter nozzle is provided with a second connecting hole. The first through hole communicates with the reversing input hole through the second connecting hole.

[0018] In an exemplary embodiment of this application, the driving mechanism includes a slanted slider and a hydraulic cylinder. The hydraulic cylinder drives the slanted slider to move up and down so that the diverting push rod moves horizontally reciprocatingly. The hydraulic cylinder is equipped with displacement monitoring.

[0019] The beneficial effects of this invention, in combination with existing technologies, are as follows:

[0020] Existing high-pressure conversion mechanisms are cumbersome, difficult to arrange, and have high manufacturing and operating costs. This application addresses this issue by connecting the main valve body to a booster cylinder via a connection port. Several guide nozzles and corresponding directional valve connecting blocks can be installed as needed. The guide nozzles enable unidirectional flow of the pressure-transmitting medium, while the directional valve connecting blocks have directional output holes that transmit the pressure-transmitting medium into the workpiece, resulting in high-pressure forming. This application features a simple structure, convenient installation, and low cost. It effectively performs high-pressure conversion, injecting pressure-transmitting medium into multiple cavities through a single booster cylinder, achieving multi-cavity molding in a single mold. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an exemplary embodiment of this application;

[0023] Figure 2 This is a top view of an exemplary embodiment of this application;

[0024] Figure 3 For this application Figure 2 Sectional view of section AA;

[0025] Figure 4 This is a schematic diagram of an exemplary guide nozzle of this application;

[0026] Figure 5 This is a side view of an exemplary guide nozzle of this application;

[0027] Figure 6 For this application Figure 5 Sectional view of section BB;

[0028] Figure 7 This is a cross-sectional view of a portion of an exemplary main valve body according to this application;

[0029] Figure 8 This is an exemplary partial sectional view of this application;

[0030] Figure 9 This is a schematic diagram of an exemplary diverter nozzle of this application;

[0031] Figure 10 This is a cross-sectional view of a portion of an exemplary diverter nozzle according to this application;

[0032] Figure 11 This is a cross-sectional view of a portion of an exemplary drive mechanism of this application;

[0033] Figure 12 This is a schematic diagram of an exemplary partial structure of this application;

[0034] Figure 13 This is a schematic diagram of an exemplary diversion push rod structure of this application;

[0035] Figure 14 This is an exemplary cross-sectional view of the present application in a non-operating state;

[0036] Figure 15 This is a cross-sectional view of an exemplary working state of this application;

[0037] Figure 16 This is a schematic diagram illustrating different numbers of high-voltage output ports as exemplified in this application.

[0038] Component designation explanation

[0039] 100. Main valve body; 110. First chamber; 120. Booster cylinder connection port; 200. Guide nozzle; 210. Guide inlet hole; 220. Guide outlet hole; 221. Central guide outlet hole; 300. Reversing valve connecting block; 301. Sealing gasket; 302. Reversing output hole; 303. First through hole; 304. Third through hole; 305. Lubricating copper sleeve; 306. Dust cover; 307. Sealing ring; 310. Diverter nozzle; 311. Reversing input hole; 312. First connecting hole; 313. Second connecting hole; 314. Annular groove; 315. Third connecting hole; 400. Sealing component; 510. Elastic component; 520. Diverter push rod; 521. T-block; 530. Drive mechanism; 531. Inclined slider; 5311. Dovetail groove; 532. Hydraulic cylinder; 533. Slider seat; 534. Limit bolt. Detailed Implementation

[0040] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementation schemes and not for limiting the scope of protection of the present invention. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0041] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in the present invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, devices, and materials similar to or equivalent to those described, used, or made of materials in the embodiments of this invention.

[0042] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as part of the scope of the invention.

[0043] Please see Figures 1-3 This application claims protection for a high-pressure conversion mechanism. The high-pressure conversion mechanism has a single inlet and two or more outlets, and the high pressure flowing out serves as the high pressure required for product formation. The high-pressure conversion mechanism includes a main valve body 100, within which a first chamber 110 is provided. The side wall of the first chamber 110 is provided with a booster cylinder connection port 120, through which a booster cylinder is connected to the first chamber 110, so that the booster cylinder injects a pressure-transmitting medium into the first chamber 110. The pressure-transmitting medium can be gas, liquid, etc., and in one embodiment, a liquid pressure-transmitting medium is preferred.

[0044] A guide nozzle 200 is slidably connected inside the first chamber 110. Depending on actual needs, two or more guide nozzles 200 can be provided. The number of guide nozzles 200 is consistent with the number of outlets of the high-voltage conversion mechanism. This application will use two guide nozzles 200 as an example for introduction.

[0045] Please see Figures 4-6The guide nozzle 200 has an inlet end and an outlet end. The inlet end has one guide inlet hole 210, and the outlet end has two or more guide outlet holes 220. The diameter of the guide outlet holes 220 is smaller than the diameter of the guide inlet hole. In one embodiment, the depth of the guide outlet holes 220 is smaller than the depth of the guide inlet holes 210. When the pressure-transmitting medium fills both ends of the guide nozzle 200, the force borne by the medium in different directions within a unit is proportional to the high-pressure flow rate. The size of the orifice directly affects the flow rate. Since the diameter of the guide outlet holes 220 is smaller than the diameter of the guide inlet hole, the pressure at the inlet end is greater than that at the outlet end during operation, ensuring that the pressure-transmitting medium flows from the inlet end to the outlet end.

[0046] In one embodiment, the outlet end of the guide nozzle 200 is frustum-shaped, with one guide hole 220 disposed on the upper bottom surface of the frustum. This guide hole 220 is a central guide hole 221, and the axis of the central guide hole 221 coincides with the axis of the guide inlet hole 210. In one embodiment, the diameter of the central guide hole 221 is one-fifth of the diameter of the guide inlet hole 210. In another embodiment, the end of the central guide hole 221 away from the guide inlet hole 210 is a conical surface. The remaining guide holes 220 are arranged in a circumferential array on the side of the frustum. In one embodiment, four guide holes 220 are arranged in a circumferential array on the side of the frustum.

[0047] To achieve high-pressure single-port inflow and multiple designated outlet outflow, taking two designated outlet outflow as an example, in one embodiment, two guide nozzles 200 are slidably connected within the first chamber 110. An elastic element 510 is also provided within the first chamber 110, located in the middle of the first chamber 110. The booster cylinder connection port 120 is located on the side wall of the middle portion of the first chamber 110. Both ends of the elastic element 510 are connected to the two guide nozzles 200 respectively. In its natural state, the elastic element 510 presses the two guide nozzles 200 in opposite directions.

[0048] The high-pressure conversion mechanism includes a reversing valve connecting block 300, a flow divider 310, a sealing element 400, and a flow divider push rod 520. The main valve body 100 has a mounting groove. The flow divider 310 is installed inside the reversing valve connecting block 300, which presses the flow divider 310 into the mounting groove of the main valve body 100. The reversing valve connecting block 300 and the main valve body 100 are fastened together by fasteners. In one embodiment, a sealing gasket 301 is provided at the connection between the reversing valve connecting block 300 and the main valve body 100 to prevent leakage of the pressure transmission medium during operation. The flow divider 310 has a reversing input hole 311, which communicates with the first chamber 110. The sealing element 400 is disposed inside the first chamber 110, located at the outlet end of the guide nozzle 200, and is used to block and open the communication between the reversing input hole 311 and the first chamber 110. The diversion push rod 520 moves linearly back and forth. When it extends, the diversion push rod 520 pushes the sealing member 400 away from the reversing input hole 311 so that the reversing input hole 311 is connected to the first chamber 110.

[0049] Please see Figure 7 In one embodiment, the elastic element 510 is a spring, and the sealing element 400 is a sealing ball. In its natural state, the spring compresses the two guide nozzles 200, causing the sealing ball to press tightly against the reversing input hole 311, blocking the communication between the reversing input hole 311 and the first chamber 110. The end of the central guide hole 221 is a conical surface, allowing the sealing ball to fully contact the central guide hole 221, which facilitates the positioning of the sealing ball to a certain extent and ensures that the sealing ball can block the reversing input hole 311. Preferably, the end of the reversing input hole 311 is a conical surface to ensure that the sealing ball is in close contact with the reversing input hole 311 and blocks the reversing input hole 311. When the pressure-transmitting medium enters the first chamber 110 through the booster cylinder connection port 120 of the main valve body 100, the medium quickly disperses to both ends. The unidirectional pressure from the two end guide nozzles 200 instantly fills the surrounding area of ​​the sealing ball. However, since the sealing ball initially contacts the reversing input hole 311 of the diverter nozzle 310, causing a seal, the diverter push rod 520 only needs to provide thrust to disengage the sealing ball from the diverter nozzle 310, allowing the pressure to flow smoothly out of the diverter nozzle 310 to the designated outlet. To stop operation, simply retract the diverter push rod 520. The sealing ball will be subjected to the horizontal pressure applied by the central guide hole 221 of the guide nozzle 200 and the elastic force of the elastic element 510, moving towards the inlet of the diverter nozzle 310 and contacting the conical surface of the reversing input hole 311 of the diverter nozzle 310 again until the pressure channel is closed.

[0050] In one embodiment, the sidewall of the flow divider 310 is provided with a first connecting hole 312, and the sidewall of the reversing valve connecting block 300 is provided with a reversing output hole 302. The reversing output hole 302 communicates with the reversing input hole 311 through the first connecting hole 312. The reversing output hole 302 outputs a pressure-transmitting medium to transmit high pressure. In another embodiment, the sidewall of the flow divider 310 is provided with a second connecting hole 313, and a first through hole 303 is provided at a corresponding position on the sidewall of the reversing valve connecting block 300. The first through hole 303 communicates with the reversing input hole 311 through the second connecting hole 313. Preferably, the diameter of the second connecting hole 313 is larger than the diameter of the first connecting hole 312, and the diameter of the first through hole 303 is larger than the diameter of the reversing output hole 302. In one embodiment, the first connecting hole 312 and the reversing output hole 302 are coaxial and have the same diameter; in another embodiment, the first through hole 303 and the second connecting hole 313 are coaxial and have the same diameter, which facilitates the flow of the pressure-transmitting medium. In one embodiment, the first connecting hole 312 and the second connecting hole 313 are staggered, that is, the first connecting hole 312 and the second connecting hole 313 are not coaxial, reducing the direct flow of the pressure-transmitting medium from the second connecting hole 313 to the first connecting hole 312.

[0051] Please see Figure 9 In one embodiment, the sidewall of the diverter nozzle 310 is provided with an annular groove 314. The openings of the first connecting hole 312 and the second connecting hole 313 are both located within the annular groove 314. The annular groove 314 facilitates the machining of the first connecting hole 312 and the second connecting hole 313. Furthermore, it provides a buffer area. During installation, assembly tolerances inevitably exist between the first connecting hole 312 and the reversing output hole 302; that is, the holes may not be perfectly aligned. The annular groove 314 provides a buffer area, reducing the possibility of the pressure-transmitting medium overflowing from the connection between the first connecting hole 312 and the second connecting hole 313. Similarly, it reduces the possibility of overflowing from the connection between the second connecting hole 313 and the first through hole 303.

[0052] Please see Figure 10 In one embodiment, the diverter nozzle 310 is further provided with a third connecting hole 315, which is coaxial with the reversing input hole 311. The diameter of the third connecting hole 315 is smaller than that of the reversing input hole 311, and the third connecting hole 315 and the reversing input hole axially penetrate the diverter nozzle 310. The diameter of the third connecting hole 315 is the same as the diameter of the working end of the diverter rod 520, and the diverter rod 520 passes through the third connecting hole 315 and the reversing input hole 311 in sequence. When the diverter rod 520 is not extended, the portion of the diverter rod 520 that passes through the third connecting hole 315 extends into the reversing input hole 311 to prevent the pressure-transmitting medium in the diverter nozzle 310 from flowing out through the third connecting hole 315.

[0053] Under the push of the diversion rod 520, the sealing ball connects the reversing input hole 311 to the first chamber 110. The reversing output hole 302 and the first through hole 303 on the reversing valve connecting block 300 play different roles when connected to different working objects. In the first case, when the first through hole 303 is connected to the water supply cylinder through a pipe, the reversing output hole 302 is connected to the high-pressure pipe as the forming high-pressure output port. At this time, the booster cylinder is not equipped with a pressure transmission medium replenishment device. When neither the booster cylinder nor the reversing output hole 302 is working, the pressure transmission medium is replenished to the booster cylinder through the first through hole 303. When the booster cylinder starts working, the replenishment of pressure transmission medium at the first through hole 303 stops. In one embodiment, when the booster cylinder and the water supply cylinder input different pressures at the same time, considering that the pressure of the booster cylinder will be much greater than that of the water supply cylinder, in order to ensure that the pressure transmission medium is not flowed into the direction of the water supply cylinder, a one-way valve is installed at the output end of the water supply cylinder, so that the pressure transmission medium can only enter the conversion mechanism from the water supply cylinder and will not flow in the opposite direction. When the booster cylinder stops working, the water replenishment cylinder continues to replenish the pressure-transmitting medium. The input pressure-transmitting medium flows into the booster cylinder until it is full. Alternatively, when the booster cylinder is equipped with a pressure-transmitting medium replenishment device, there is sufficient pressure-transmitting medium throughout the entire working process. When the two ends of the workpiece are not completely sealed, pressure-transmitting medium is injected into the workpiece simultaneously through the first through-hole 303 and the reversing output hole 302. The first through-hole 303 has a larger diameter, allowing for rapid injection of the pressure-transmitting medium into the workpiece. Once the two ends of the workpiece are sealed, only a small amount of liquid is needed to achieve a rapid pressure increase, significantly shortening the forming time.

[0054] During the linear reciprocating movement of the diverter rod 520, air compression and the infiltration of the pressure-transmitting medium occur. In one embodiment, a third through hole 304 is provided in the movable area between the diverter rod 520 and the diverter nozzle 310. The third through hole 304 penetrates the side wall of the reversing valve connecting block 300 and is used for the discharge of the pressure-transmitting medium and the flow of gas. To ensure the stability and sealing performance of the diverter rod 520, a sealing device is provided at the sliding connection between the diverter rod 520 and the reversing valve connecting block 300. In one embodiment, the sealing device includes a lubricating copper sleeve 305, a dust cover 306, and a sealing ring 307. Preferably, the dust cover 306 has one layer to prevent dust from being brought into the pressure-transmitting medium during the reciprocating linear movement of the diverter rod 520, and the sealing ring 307 has two layers to prevent the pressure-transmitting medium from leaking from the diverter rod 520.

[0055] Please see Figures 11-13In one embodiment, the diverting rod 520 is driven by a driving mechanism 530 to move reciprocally in a linear motion. The driving mechanism 530 includes a slider seat 533, an inclined slider 531, and a hydraulic cylinder 532. The slider seat 533 is installed at the end of the reversing valve connecting block 300, that is, at the end of the reversing valve connecting block 300 away from the main valve body 100. The slider seat 533 is provided with a fourth through hole and a fifth through hole that are perpendicular to each other. The diverting rod 520 is slidably connected in the fourth through hole, and the inclined slider 531 is slidably connected in the fifth through hole. The end face of the diverting rod 520 is an inclined surface that matches the inclined surface of the inclined slider 531. The up-and-down movement of the inclined slider 531 drives the diverting rod 520 to move horizontally reciprocally.

[0056] To ensure that the diverter rod 520 can move horizontally within the reversing valve connecting block 300, a T-shaped block 521 is designed at the end of the diverter rod 520. A dovetail groove 5311 is provided at the corresponding position of the inclined slider 531. The T-shaped block and the dovetail groove 5311 cooperate to prevent the diverter rod 520 from separating from the inclined slider 531. The diverter rod 520 is driven by the inclined slider 531 to move horizontally reciprocatingly. To further prevent the diverter rod 520 from separating from the inclined slider 531, a limiting bolt 534 is installed at the end of the diverter rod 520, penetrating the inclined slider 531. The inclined slider 531 has a through groove along the axis of the diverter rod 520, penetrating the inclined slider 531. The limiting bolt 534 cooperates with the through groove to prevent the diverter rod 520 from completely separating from the inclined slider 531.

[0057] To provide the power for the vertical movement of the inclined slider 531, the bottom of the vertically movable inclined slider 531 is threaded and connected to the hydraulic cylinder 532 through the thread. The hydraulic cylinder 532 has a displacement monitoring function. By calculating the displacement of the hydraulic cylinder 532, the horizontal forward and backward displacement of the flow divider rod 520 can be accurately obtained. The magnitude of the displacement can effectively control the flow rate of the liquid flowing into the flow divider nozzle 310. After conversion, the actual pressure of the high-pressure input can be obtained. Since the pressure control of the entire internal high-pressure forming process must have extremely high precision, the pressure control precision requirements for realizing a multi-cavity mold will be even higher. Compared with the traditional flow monitoring method of reversing valve, which is mostly controlled by the oil pressure provided by the hydraulic pump, and the pressure can only be calculated by the hydraulic valve ratio, the hydraulic oil inevitably suffers losses when flowing in the oil pipe, oil pump, and accumulator. The actual pressure finally transmitted to the product forming will be discounted, and the proportion of this loss cannot be accurately calculated. This application uses the hydraulic cylinder 532 to precisely control the displacement of the flow divider rod 520. The displacement is combined with the flow ratio of the pressure output to obtain a more accurate understanding of the actual product pressure.

[0058] Working methods: Please refer to Figure 14When not in operation, all cylinders 532 retract to the bottom before pressure is injected, and the inclined slider 531 pulls the diverting rod 520 to the end. The guide nozzle 200 is pushed by the elastic element 510 to hold the sealing ball. The sealing ball is in close contact with the diverting input hole of the diverting nozzle 310 to ensure that the pressure transmission medium cannot flow into the diverting nozzle 310.

[0059] Please see Figure 15 The booster cylinder injects the pressure-transmitting medium into the main valve body 100, which quickly flows to the two end guide nozzles 200. The oil cylinder 532 pushes the inclined slider 531 upward through oil pressure control. The inclined slider 531 pushes the diverting rod 520 to move inward continuously until the diverting rod pushes the sealing ball to separate from the diverting nozzle 310. At this time, the pressure-transmitting medium enters the diverting nozzle 310.

[0060] If the booster cylinder of the equipment is not equipped with a hydraulic medium replenishment device, the water replenishment cylinder injects water from the first through hole 303 at the upper end of the reversing valve connecting block 300. Under the drive of high pressure, the water flows into the reversing output hole 302 at the lower end of the reversing valve transfer block. The reversing output hole 302 is connected to the high pressure pipe to deliver the forming pressure transmission medium and ensure that the forming reaches the rated pressure.

[0061] If the booster cylinder of the equipment does not need to consider the replenishment of the pressure transmission medium, the pressure transmission medium input through the first through hole 303 of the reversing valve connecting block 300 will be used as low-pressure water injection. The low-pressure water injection direction and the high-pressure water injection direction are located at the two ends of the product respectively. The low pressure and the high pressure continuously provide pressure to the inside of the tube blank, which can quickly achieve pressurization.

[0062] When only one side of the cylinder 532 moves, the entire valve body will achieve the internal high pressure output on the corresponding side. When both sides of the cylinder 532 move, the entire valve body will achieve the internal high pressure output on both sides. The distance and speed of the cylinder 532's movement directly affect the magnitude and speed of the internal high pressure output.

[0063] The booster cylinder stops providing high pressure, while the low-pressure water supply cylinder continues to work, continuously injecting low pressure into the reversing valve body. The internal high-pressure forming output end stops at this time, and the low pressure will flow into the booster cylinder until the entire booster cylinder is full of feedback liquid. At this time, the oil cylinder 532 retracts, and the inclined slider 531 pulls the diversion push rod 520 to return to the initial state. The sealing ball will seal the diversion nozzle 310 and the reversing input hole 311 again.

[0064] It should be noted that, as shown in the attached document... Figure 16 As shown, the high-pressure output ports of this application can be two, four, six, eight, etc., which can be selected according to actual needs to meet the requirement that a single booster cylinder can simultaneously complete two or more high-pressure outputs.

[0065] Addressing the shortcomings of traditional high-pressure control methods for multi-cavity molds, such as numerous control system components, large footprint, high cost, difficult maintenance, and complex system control, this application fundamentally avoids the technical bottlenecks of traditional high-pressure control methods, such as the inability to accurately obtain the actual forming high-pressure due to oil circuit losses. This application's single high-pressure conversion mechanism can output from two or more high-pressure ports; the control of different high-pressure output ports can achieve single high-pressure output in different directions, simultaneous output from multiple ports, and sequential control of multiple high-pressure outlets; the multiple output ports designed on the diverting valve connection port, in addition to serving as high-pressure output ports, can also perform low-pressure water replenishment functions, providing sufficient hydraulic medium for forming, constantly replenishing sufficient pressure transmission medium for the pressurization device, and directly serving as low-pressure water injection ends for hydraulic forming. Distributed with high-pressure water injection ends at both ends of the billet, these ports work together to greatly improve pressurization efficiency; through precise control of the displacement of the flow-dividing push rod 520 by the hydraulic cylinder 532, the displacement amount, combined with the flow rate ratio of the pressure output, can more accurately determine the pressure of the actual product.

[0066] Therefore, this invention effectively overcomes some practical problems in the prior art, thus possessing high utilization value and significance. The above embodiments are merely illustrative of the principles and effects of this invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this invention should still be covered by the claims of this invention.

Claims

1. A high pressure conversion mechanism characterized by, The utility model relates to a kind of high-pressure water jet cutting machine, including: Main valve body, first chamber is equipped in main valve body, the first chamber is equipped with booster cylinder connecting port on, the first chamber is communicated with booster cylinder by the booster cylinder connecting port; Flow guide nozzle, the flow guide nozzle is slidably arranged in the first chamber, the flow guide nozzle is equipped with flow guide inlet hole, flow guide outlet hole, the flow guide outlet hole is communicated with the flow guide inlet hole; Reversing valve connecting block, reversing valve connecting block is equipped with reversing input hole, reversing output hole, the reversing input hole is communicated with the reversing output hole, the reversing input hole is connected with the first chamber; The reversing valve connecting block is equipped with shunt nozzle, the reversing input hole is arranged at the end of the shunt nozzle, the side wall of the shunt nozzle is equipped with first connecting hole, the reversing input hole is communicated with the reversing output hole via the first connecting hole; The side wall of the reversing valve connecting block is further provided with first through-hole, the side wall of the shunt nozzle is equipped with second connecting hole, the first through-hole is communicated with the reversing input hole via the second connecting hole; The side wall of the shunt nozzle is equipped with annular groove, the opening of first connecting hole and second connecting hole is in annular groove; Sealing element and moving mechanism, the moving mechanism drives the sealing element to close, open the reversing input hole; The moving mechanism includes shunt top rod and driving mechanism, the driving mechanism drives the shunt top rod to move linearly, so that the shunt top rod drives the sealing element to move away from the reversing input hole, so that the reversing input hole is opened; The third through-hole is arranged in the activity area between the shunt top rod and the shunt nozzle, and the third through-hole penetrates the side wall of the reversing valve connecting block.

2. The high pressure conversion mechanism of claim 1, wherein, The flow guide outlet hole is not less than three, including a center flow guide outlet hole concentric with the flow guide inlet hole, and the remaining flow guide outlet holes are arranged in a circular array on the flow guide nozzle with the center flow guide outlet hole axis as the rotation axis.

3. The high pressure conversion mechanism of claim 2, wherein, The diameter of the flow guide outlet hole is smaller than the diameter of the flow guide inlet hole, and the length of the flow guide outlet hole is smaller than the length of the flow guide inlet hole.

4. The high pressure conversion mechanism of claim 2, wherein, The end of the center flow guide outlet hole is a conical surface, and the diameter of the center flow guide outlet hole increases in the direction away from the flow guide nozzle.

5. The high pressure conversion mechanism of claim 1, wherein, The moving mechanism includes elastic element, and the elastic element presses the sealing element to close the reversing input hole.

6. The high pressure conversion mechanism of claim 5, wherein, The driving mechanism includes inclined slide and oil cylinder, the oil cylinder drives the inclined slide to move up and down to make the shunt top rod move horizontally and reciprocally, and the oil cylinder is provided with displacement monitoring.

Images