303 results about "Multiple injection" patented technology

The invention relates to the technical field of oil development, in particular to a shale oil and gas fracturing sliding sleeve capable of being opened and closed repeatedly and a using method. According to the technical scheme, a central pipe fracturing liquid inlet is formed in the upper side of a central pipe, and a reversing rail is arranged on the surface of the outer wall of the middle; a sealing cylinder sleeve and a one-way circulating valve carrier are sleeved outside the central pipe, a fracturing piston, a swivel pressing cap and a reset spring are installed in an annulus, a constant-pressure opening cavity is formed in the inner wall of the fracturing piston, a swivel is installed in the swivel pressing cap, a track pin is installed in the swivel, and the position is moved along a reversing track on the surface of the outer wall of the central pipe through the track pin. The fracturing piston moves downwards to the position of the cylinder sleeve fracturing liquid outlet under the action of pressure, the fracturing function is started, fracturing liquid is sprayed out along the cylinder sleeve fracturing liquid outlet to enter a target fracturing layer, fracturing construction of a plurality of fracturing layers can be achieved through multiple times of fracturing liquid injection and injection stopping, the fracturing sliding sleeve can be repeatedly opened and closed, and the fracturing construction efficiency is improved. And fracturing construction requirements of shale oil and gas with different layers can be met.

The utility model discloses an aluminum alloy SIM card support stamping blanking die which comprises a stamping table, an installation table is installed on the top of the stamping table, a plurality of sliding rods are installed in the installation table in a sliding mode, a buffering table is installed on the rod walls of the sliding rods together, and a plurality of buffering springs are arranged between the installation table and the buffering table. The two ends of the multiple buffer springs are fixed to the opposite side surfaces of the mounting table and the buffer table correspondingly. Through the arrangement of the multiple sets of sliding rods, the buffer springs, the limiting rods and the buffer tables, the punching head is vertically buffered in the punching process, so that the problem that burrs are generated after materials are punched is greatly reduced, meanwhile, the materials are blocked on one side through the hollow sliding blocks on the two sides in the punching process, and the punching quality is improved. And meanwhile, a control valve is matched to convey high-pressure gas into the hollow sliding block through a gas inlet pipe, and the high-pressure gas is sprayed to the surfaces of the materials through a plurality of spraying openings, so that the materials are rapidly flushed down, and the problem that the materials are clamped in the discharging opening to affect discharging is solved.

The invention relates to the technical field of injection molding machine control, in particular to a networking injection molding machine servo drive control method. Firstly, a traditional continuous servo driving action is decomposed into a strong operation-weak voltage stabilization alternating unit sequence, and the instantaneous load peak value and the hydraulic pressure fluctuation are reduced. Secondly, product type characteristics are accurately matched based on a process database, action parameters are dynamically adjusted in combination with a multi-objective optimization algorithm, and the product quality consistency is remarkably improved. In addition, energy conservation and consumption reduction are achieved through a first-stage sleep mode and a second-stage sleep mode, a group control optimization mode is used for coordinating actions of multiple injection molding machines, load fluctuation of a workshop power grid is reduced, and the service life of equipment is prolonged. The system also supports real-time monitoring and networking management, constructs intelligent closed-loop control, enhances the production flexibility and the resource utilization rate, and provides an efficient, energy-saving and reliable solution for the injection molding industry.

The invention discloses an automobile dashboard forming system and method based on multi-material co-injection molding, and relates to the field of multi-material co-injection molding, and the automobile dashboard forming system comprises a multi-station rotary mold platform, a multi-material injection molding unit and an intelligent temperature control module. According to the invention, collaborative operation of the multi-station rotary mold platform, the multi-material injection molding unit and the intelligent temperature control module is planned as a whole, rotary station circulation is taken as a core, material gradient molding is taken as a path, and accurate temperature control is taken as a guarantee, so that integrated molding of the automobile instrument panel from surface function decoration to a structural framework is realized; the rotary lifting driving device is a core transmission part and drives the core male die assembly to be accurately switched among the multiple injection molding stations, and closing and separating of the core male die assembly and the female die assemblies of all the stations are achieved. According to the modular design that the core male die assembly is matched with the female die assembly through a quick release structure, replacement of dashboard dies of different vehicle types can be completed in a short time, and the production requirements of various types are met.

The invention relates to the technical field of viscosity monitoring, in particular to crude oil viscosity reducer production quality detection equipment which comprises a crude oil conveying pipe used for conveying crude oil and further comprises a spiral conveying agent winding pipe which is wound on the outer surface of the crude oil conveying pipe and used for conveying a viscosity reducer into the crude oil conveying pipe. A plurality of injection pipes communicated with the crude oil conveying pipe are arranged on the inner wall of the crude oil conveying pipe in a staggered mode, a plurality of ultrasonic viscometers used for detecting the viscosity of crude oil are arranged on the outer surface of the crude oil conveying pipe, and the ultrasonic viscometers and the spiral conveying agent winding pipe are arranged in a staggered mode; the rotary spiral scraping pipe is attached to the inner wall of the crude oil conveying pipe in a spiral shape, a pushing assembly used for driving the rotary spiral scraping pipe to rotate so as to convey crude oil to flow is arranged in the crude oil conveying pipe, and a plurality of connecting rods capable of being connected with the pushing assembly are connected into the rotary spiral scraping pipe and used for transmission.

The invention discloses a forming device of a cable connector. The forming device comprises a workbench; the jig conveying mechanism comprises a jig conveying assembly, a jig backflow assembly, a first jig transferring assembly and a second jig transferring assembly. The jig conveying assembly and the jig backflow assembly are both arranged at the top of the workbench and provided with injection molding body jigs. The first jig transferring assembly and the second jig transferring assembly are both arranged at the top of the workbench and located between the jig conveying assembly and the jig backflow assembly so as to transfer all injection molding body jigs to the jig conveying assembly or the jig backflow assembly; a wire needle assembling mechanism, a first injection molding mechanism, a first waste clamping mechanism, a second injection molding mechanism and a second waste clamping mechanism are sequentially arranged in the injection molding body jig conveying direction of the jig conveying assembly. According to the scheme, a plurality of injection molding body jigs are automatically and circularly conveyed, the production period is shortened, the production continuity is enhanced, and the requirement of large-scale production can be met.

The invention relates to a recycled plastic reutilization injection mold applied to the technical field of injection molds, and the recycled plastic reutilization injection mold comprises a fixed seat, a fixed mold, an injection cavity, an injection hole, a cavity cover, an injection cylinder module, a stirring shaft and an inclined cone. Recycled plastic melt entering the injection cavity is evenly mixed through the stirring shaft, melt pressure in the recycled plastic melt is evenly distributed, then the recycled plastic melt enters the mold cavity of the fixed mold through the injection hole, the flowing effect of the recycled plastic melt in the injection molding process is assisted, and the quality of injection molding products is effectively improved; the injection holes are shielded and adjusted through the oblique cones, the injection flow of the injection holes is circularly adjusted, the influence of the multiple injection holes on injection molding pressure is effectively reduced, uniform injection molding of recycled plastic melt is achieved, and the injection molding machining effect of recycled plastic is effectively improved.

The invention relates to a mold closing device for producing traceless thin-wall injection molding parts, and relates to the field of injection molding devices, the mold closing device comprises a static mold arranged on a workbench and a plurality of movable molds, the side, facing the static mold, of each movable mold is provided with a mold cavity, the movable molds and the static mold are both provided with injection molding holes, and the workbench is provided with a guide rod; the guide rods are used for guiding the movable molds to slide, a driving unit is arranged on the workbench and used for driving the movable molds and the static molds to be opened and closed, each movable mold is provided with a cutting unit, the cutting units are used for cutting injection molding parts in the injection molding holes, and a plurality of clamping and discharging units are arranged on the workbench and used for clamping the injection molding parts and moving. And the clamping and discharging units correspond to the movable molds one to one, and pushing units are arranged on the clamping and discharging units and used for pushing injection molding parts out of the mold cavities. The injection molding device has the effects that multiple injection molding parts are subjected to injection molding in the single injection molding process, and the production efficiency of the injection molding parts is improved.

The invention relates to the field of in-situ leaching mine production, and provides a horizontal well washing simulation experiment device which comprises an ore bed simulation system used for simulating an ore bed environment and comprising a box body, the top of the box body is of an open structure, the box body is filled with ore bed rock powder to construct a simulation rock stratum, and a plurality of injection connectors are formed in the side wall of the box body; the impact force testing system is buried in the simulated rock stratum and comprises a self-advancing force and axial pressure testing device, a radial pressure testing device and a bent connecting pipe, the self-advancing force and axial pressure testing device and the radial pressure testing device are connected through a screen pipe, and the first end of the bent connecting pipe extends into the rock stratum to be connected with the jet radial pressure testing device; the second end penetrates out of the open structure of the box body; and the sand washing well washing system is detachably arranged in the bent pipe in a penetrating manner and is used for being connected with the well washing impact force testing system so as to carry out jet flow well washing, air well washing and liquid pumping simulation experiments. The in-situ leaching uranium mining production environment can be reduced, and evaluation of various well washing tools is achieved.

The full-automatic injection molding device comprises a machine body, one side of the upper end face of the machine body is provided with an injection area, and the other side of the upper end face of the machine body is provided with a mold closing forming area; the injection base is arranged in the injection area and fixed to the machine body, and a machine barrel is horizontally arranged in the injection base; the fixed mold plate is vertically fixed on the upper end surface of the machine body, and the fixed mold plate is hermetically communicated with the end part of the machine barrel; the mold closing device is arranged in the mold closing forming area and is fixed with the machine body; the movable template is slidably arranged on the upper end surface of the machine body; one ends of the positioning guide columns are vertically fixed at four corners of the fixed mold plate; the multiple injection molding micropores are formed in the concave mold plate and distributed in the bottom of the deep cavity or the position of the complex curved surface, in this way, high-pressure injection molding can be preferentially conducted on the complex cavity wall of the injection molding cavity through the injection molding micropores, then filler is diffused from the center through the injection molding channel in the middle, and on one hand, the injection molding filling effect is improved; on the other hand, the orientation distribution of the injection molding material is more uniform.

This invention relates to an injection mold for recycling plastics, applied in the field of injection mold technology. It includes a fixed base, a fixed mold, an injection cavity, an injection port, a cavity cover, an injection barrel module, a stirring shaft, and an inclined cone. In this invention, when using recycled plastics for injection molding, the injection barrel module delivers molten recycled plastic into the injection cavity. The stirring shaft uniformly mixes the molten recycled plastic entering the injection cavity, evenly distributing the melt pressure within the molten recycled plastic. The molten recycled plastic then enters the mold cavity of the fixed mold through the injection port, improving the flow effect of the recycled plastic melt during the injection molding process and effectively improving the quality of the injection molded product. Simultaneously, the stirring shaft drives the inclined cone to rotate, using the inclined cone to adjust and shield the injection port, cyclically adjusting the injection flow rate and effectively reducing the impact of multiple injection ports on the injection pressure. This achieves uniform injection of the recycled plastic melt into the mold, effectively improving the injection molding effect of recycled plastics.

The present specification relates to an embodiment of an air-conditioning system using a plurality of turbo compressors, wherein driving of the plurality of turbo compressors is switched according to operating conditions, and multiple injections are made into an internal heat exchanger, thereby circulating a refrigerant in response to the operating conditions.

An autoinjector is configured to allow a user to suspend delivery of a medicament upon first activation of the autoinjector, and thereafter resume delivery of the medicament. The dose fractionated administration autoinjector may be operated to deliver a total desired dose of drug at multiple stages and / or at multiple injection sites.

The utility model relates to the technical field of hot runner injection molding, and discloses a multi-head type hot runner nozzle, which is characterized in that a fixed template, a hot runner fixing plate, a top plate and a runner plate form a mounting die holder, and two feeding structures are arranged in the mounting die holder in a bilateral symmetry manner; an opening and closing air cylinder and a hot nozzle are arranged above and below the middle of the mounting mold base correspondingly, three sets of main valve elements distributed linearly are arranged in the hot nozzle, and the upper ends of the main valve elements are connected with the opening and closing air cylinder through a connecting plate. Two kinds of plastics or two different colors can be used for injection molding at the same time, injection molding can also be carried out independently according to needs, multiple injection molding can be carried out at the same time through diversity and the three arranged nozzle heads, and the injection molding efficiency is improved.

The invention belongs to the field of oil field separated layer water injection, and discloses an integrated wireless communication separated layer water injection method and system which comprises a ground wireless communication control module, a multi-layer injection allocation wireless communication control module, a multi-channel oil pipe and a multi-channel overflowing packer. The battery bin, the circuit and sensor bin, the valve driving bin, the channel shunting section and the flow monitoring bin are arranged in the multi-layer injection allocation wireless communication control module, so that water injection flow and water injection pressure of different underground water injection layer sections of a water injection well are collected and adjusted; meanwhile, other modules are matched to realize water distribution requirements of multiple water injection layer sections and a wireless testing and adjusting function; compared with existing wireless layered water injection controllers which are controlled independently and cannot communicate reliably, the multi-layer injection allocation wireless communication control module can control the flow of each layer section at the same time, and when communication with flow or pressure as a medium is carried out, the communication rate is higher, and the recognition rate and the accuracy rate are higher.

This utility model provides a cage injection mold with a rapid preheating structure, comprising: a moving mold at the bottom of a fixed mold; a sprue sleeve passing through the center of the fixed mold on the side away from the moving mold; a mold core assembly positioned at the center of the fixed mold and the moving mold on the side close to each other; a hot runner heating module sleeved on the bottom of the sprue sleeve at the top; and a heating rod heating module passing through the center of the mold core assembly; and several junction boxes bolted to the side walls of the fixed mold and the moving mold. In the mold preheating process, based on heat conduction heating using a mold temperature controller, a hot runner heating module and a heating rod heating module are installed at the core of the mold. These are connected to a power plug via junction boxes to achieve electric heating at the core, which assists in rapid mold preheating and greatly improves processing efficiency. During injection, the temperature of the liquid plastic does not drop when it enters the molding cavity composed of the fixed mold core and the moving mold core, improving the quality of the injection molded parts. Furthermore, the injection runner can be diverted to allow one mold to process multiple injection molded parts simultaneously, improving production efficiency.

The utility model relates to a needleless injector device capable of preventing injection shaking and conducting injection in batches, which belongs to the field of needleless injectors and comprises a reset motor, a reset screw rod, a reset block, a sliding block, a trigger, a sliding block positioning groove, a driving hammer, a driving hammer spring, an injection motor, an injection screw rod, a machine frame and a sliding sleeve. The reset screw is in threaded fit with a reset block, one face of the output end of the reset motor is installed on one side of the rack, the sliding block is located in the rack, the sliding block positioning groove is formed in the end of one side of the sliding block, the trigger is installed on the rack, the sliding sleeve is installed in the rack, the driving hammer is installed in the rack, and the head of the driving hammer is installed in the sliding sleeve in a sliding mode. The driving hammer spring is installed at the tail of the driving hammer, the injection motor is fixed in the rack, the output end of the injection motor is connected with the injection screw rod, and by arranging the pushing motor and the injection screw rod, the problems that multiple times of injection cannot be achieved, and medicine leakage or injection position deviation is caused by shaking during injection are solved.

The intelligent injector comprises a storage battery, a linear motor, an MCU, a key, an injection switch and a display screen, the storage battery supplies power to the linear motor, the MCU, the key and the display screen, and the key is in telecommunication connection with the MCU to control the linear motor to achieve progress and speed adjustment. The display screen is in telecommunication connection with the MCU and used for displaying key adjusting content and injection data. The injection switch is in telecommunication connection with the MCU to control the motor to conduct injection. Different modes are set by changing the rotating speed of the linear motor; the injection amount can be continuously and accurately adjusted, and medicine waste and excessive administration are effectively eradicated; continuous multi-time injection can be achieved, and efficiency is improved.

The utility model discloses a rotary injection and blow molding all-in-one machine which comprises a rack, the injection mold is connected to the rack, and a plurality of injection cavities are formed in one side of the injection mold; the middle core mechanism comprises a middle sliding frame and an injection blowing device, the middle sliding frame can move left and right on the rack, the injection blowing device is rotationally connected into the middle sliding frame, the injection blowing device right faces the injection molding cavities, the positions, right facing the multiple injection molding cavities, of the two sides of the injection blowing device are each provided with an injection core head, and air blowing openings and injection molding openings are formed in the multiple injection core heads; the blow molding mechanism comprises a side sliding frame and a blow molding die, the side sliding frame is located on the side, away from the injection molding die, of the sliding frame, the blow molding die is connected to the side sliding frame, and forming cavities are formed in the multiple injection molding die positions on the side, right opposite to the injection and blow molding device, of the blow molding die respectively. And the structure for transferring and conveying the semi-finished products among different procedures is reduced, the space volume occupied by the whole equipment is reduced, and the whole production efficiency is improved.

This utility model provides an electrolyte cleaning mechanism, including a cleaning fluid delivery assembly, an injection pump assembly, and a pneumatic control assembly. The cleaning fluid delivery assembly includes a cleaning fluid storage tank, a cleaning fluid storage tank air pipe, a cleaning fluid storage tank inlet pipe, a cleaning fluid storage tank manual inlet pipe, a cleaning fluid storage tank inlet pipe, a cleaning fluid storage tank inlet filter, a cleaning fluid storage tank outlet pipe, and a cleaning fluid storage tank outlet pipe socket. The injection pump assembly includes multiple injection pump units, the output ends of which respectively deliver cleaning fluid to an injection machine. The pneumatic control assembly is connected to control the air pressure inside the cleaning fluid storage tank. This electrolyte cleaning mechanism is used to clean the injection channels of the injection pump and injection machine, preventing electrolyte crystallization and blockage of the injection channels. The cleaning fluid storage tank inlet filter filters the cleaning fluid, ensuring that no impurities enter the injection pump and injection machine, effectively guaranteeing the cleaning effect.

The invention provides an injection-production well pipe detection period prediction method, and belongs to the field of petroleum and natural gas industry. The method comprises the following steps: firstly, collecting actual pipe detection periods and related production data and state data of a plurality of injection-production wells, assigning values to the related state data, and constructing a data set; secondly, preprocessing the data set; then main control factors are screened; constructing an injection-production well pipe inspection period prediction model by using an extreme gradient lifting tree, and adjusting hyper-parameters; training the injection-production well pipe inspection period prediction model by using the preprocessed actual pipe inspection period of the injection-production well and the sample data of the main control factors of the injection-production well; calculating evaluation indexes of the injection-production well pipe inspection period prediction model for performance evaluation; then data of main control factors of the in-service injection and production well pipe inspection period are obtained; and finally, predicting the pipe inspection period of the in-service injection and production well by using the trained injection and production well pipe inspection period prediction model. By adopting the method, the pipe detection period of the injection-production well can be accurately predicted, the production decision is optimized, and the production safety is ensured.

This utility model discloses a high-efficiency ink thinner adding device, including a frame, a support platform, a first hose, and a second hose. An ink turnover box is located on the top of the frame, and a support plate is located on the front side of the ink turnover box. A lifting cylinder is installed in the middle of the support plate, with the piston rod of the lifting cylinder pointing downwards and connected to a lifting plate. Several injection rods are evenly spaced laterally on the rear side of the lifting plate. The first hose connects the ink turnover box to the top inlet of the injection rods. Two symmetrical fixing plates are located on the rear side of the frame, and a thinner transfer pipe is connected to the fixing plates. The second hose connects the thinner transfer pipe to the side opening of the injection rods. The frame is also connected to a positioning and clamping mechanism. Multiple injection rods can accurately align with the material container to complete the adding and filling process, improving production efficiency and reducing manual labor intensity.

The utility model discloses filling equipment for preparing nicotinamide glucosamine oral liquid, which comprises a driving unit which comprises an electric conveying belt and a support plate fixedly connected to one side of the electric conveying belt, a filling unit which comprises a rectangular frame fixedly connected to the output end of the cross slide rail, and a driving unit which comprises a driving unit and a filling unit, the inner wall of the rectangular frame is rotationally connected with a threaded rod and a limiting rod, one side of the rectangular frame is rotationally connected with a rotating rod, the rotating rod penetrates through the rectangular frame and is fixedly connected with the threaded rod, and the outer wall of the limiting rod is slidably sleeved with a plurality of evenly-distributed movable plates. By rotating the threaded rod, the multiple movable plates can drive the multiple injection pipes to be away from or close to each other at equal intervals, so that the intervals among the multiple injection pipes can be adjusted according to the diameters of oral liquid bottles, and bottles with different diameters can be filled conveniently.

This invention provides a test method for determining injection fusion in multiple injections of a high-pressure common rail system, comprising the following steps: S1. Constructing a high-pressure common rail system injection pattern test system to test the injection pattern of two injections: pre-injection + main injection; S2. Constructing a high-speed photography direct-view test system for the injection process of the high-pressure common rail system to test the spray development characteristics under injection intervals; S3. Processing the images of the spray development process of multiple injections of the high-pressure common rail system, and repeating the spray development characteristic test until the fuel sprays of the two injections merge. The test method for determining injection fusion in multiple injections of a high-pressure common rail system described in this invention employs a spray visualization test method, obtaining the actual development process of real fuel spray in the cylinder, which can accurately determine whether actual fuel spray fusion has occurred in the cylinder, solving the problem of misjudgment of injection fusion based on control signals and injection pattern curves.

The application aims to provide a method for regulating the consistency of injector injection of each cylinder of an engine considering transient supply-injection disturbance, belonging to the field of engines. First, the rail pressure curve, the injector inlet pressure curve, the driving current curve and the injection rate curve data under different supply time and injection time are obtained on a high-pressure fuel injection system test bench to construct a data set. Then, based on the data set, a Transformer time series model is established with the rail pressure, pressure and current curve as input and the injection rate as output, the injection rate is predicted online and the injection quantity is calculated through time integration. Next, through the programmable logic controller, the injection pulse width under different supply and injection time is feedback regulated to realize the accurate control of the injection quantity of single and multiple injections of each cylinder. The application effectively responds to the supply-injection disturbance under transient working condition, improves the consistency of the injection quantity of each cylinder, and improves the combustion efficiency and running stability of the engine.

The invention discloses a drainage device for gas control, which is provided with a sealing mechanism, so that a drainage pipe can be well sealed, and the suction effect of subsequent negative pressure suction can be conveniently ensured. The uniform grouting assembly is used for uniformly injecting an expansion curing agent into each injection sealing cavity, so that the uniform sealing performance of the outer circumferential side of the drainage pipe is effectively ensured, the problem of poor local sealing effect is prevented, and the sealing capability and the sealing convenience are improved; during sealing, the annular grouting main pipe is arranged, and the sealing grouting branch pipes are used for uniformly injecting an expansion curing agent into each injection sealing cavity, so that uniform sealing of each position is effectively guaranteed, and the sealing effect and sealing capacity of each position are guaranteed; and the problems of poor sealing and long-time waiting for repeated injection caused by non-uniform flowing of the curing agent are prevented.

This invention discloses a low-emission combustion system and method for an ammonia engine with active control of dual reactive activity, comprising: an ammonia fuel engine and an electronic control unit. A jet ignition device and a liquid ammonia injector are disposed on the cylinder head of the ammonia fuel engine. The jet ignition device provides a jet ignition source to the main combustion chamber, and the liquid ammonia injector injects liquid ammonia fuel into the main combustion chamber. The electronic control unit is connected to the liquid ammonia injector, an air injector, a fuel injector, and a spark plug in the pre-combustion chamber, and is used to adjust the injection timing, number of injections, and injection quantity of the liquid ammonia injector based on at least one parameter among engine speed, load, cylinder pressure, intake state, and combustion phase, while simultaneously adjusting the air injection quantity, hydrogen injection quantity, and pre-combustion chamber ignition timing. The system actively controls the reactive activity within the combustion chamber through multiple injections of liquid ammonia, and simultaneously, through a control strategy, actively controls the combustion rate over a wide range.

This application discloses an air gun structure, including a barrel and a nozzle. The nozzle is rotatably connected to the barrel. The nozzle has multiple injection holes arranged in a circular array. The injection holes are inclined relative to the nozzle, so that the gas ejected from the injection holes can drive the nozzle to rotate relative to the barrel. The air gun structure of this application can achieve a wide diffusion range of dry ice and produce a mist-like ice output, which can quickly remove silicone residue and dirt from the surface of molds.

The injection mold comprises an upper mold assembly and a lower mold assembly, the upper mold assembly comprises an upper mold plate, an upper mold core and a driving part, the upper mold plate is provided with an upper mounting cavity, the upper mold core is movably arranged in the upper mounting cavity, and the driving part can drive the upper mold core to be switched between a first station and a second station; the upper mold core is provided with a first injection molding concave part, a second injection molding concave part and a plurality of third injection molding concave parts, the first injection molding concave part is provided with a first flow intercepting surface, the first injection molding concave part is communicated with the third injection molding concave parts, the second injection molding concave part is provided with a second flow intercepting surface, and the second injection molding concave part is communicated with the third injection molding concave parts; the lower mold assembly comprises a lower mold plate and a lower mold core, the lower mold plate is provided with a lower mounting cavity, the lower mold core is fixedly arranged in the lower mounting cavity, the lower mold core is provided with a plurality of injection molding convex parts, the injection molding convex parts can be inserted into the first injection molding concave part, the second injection molding concave part and the third injection molding concave part, and injection molding is repeated for multiple times, so that a longer injection molding part can be obtained; and the production efficiency is greatly improved.

This invention discloses an integrated gas distribution device and method for a dual-fuel engine gas injection system in the field of dual-fuel engine technology. The device includes a common rail system, a pressure replenishment component, and a pulse pressure replenishment mechanism. The common rail system includes a common rail pipe and multiple injection valve supply pipes equipped with pressure sensors installed on the common rail pipe. This invention integrates electromagnetic valves capable of high-frequency pressure replenishment into the common rail system. Each electromagnetic valve alternately replenishes pressure to the injection valve supply pipes in a pulse manner, effectively reducing pressure loss in the injection valve supply pipes caused by the length of the common rail pipe and flow diversion. This significantly improves the stability and uniformity of gas injection, which is beneficial for stable engine operation and extends engine lifespan.