331 results about "Pressure injection" patented technology

The invention provides a flame-retardant magnesium alloy with efficient forming diversification and a preparation method of the flame-retardant magnesium alloy. The flame-retardant magnesium alloy comprises the following components in percentage by mass: 4.0-10.0% of Al, 0.2-1.6% of Ca, 0.01-0.5% of Mn, 0.1-1.5% of RE, less than or equal to 0.05% of inevitable impurities and the balance of Mg, and the added RE is one or any combination of Ce, Sm, La and Sr. The preparation method comprises the following steps: smelting and casting, granulating and pulping, and performing pressure injection molding. According to the preparation method, diversified efficient forming of complex curved surfaces, thin-wall parts, special-shaped components and the like can be achieved through cooperative regulation and control of components, the process and the structure, and the obtained flame-retardant magnesium alloy is compact in structure, has the multi-level structural characteristics including a spherical primary solid phase, a fine solidification secondary phase and a grain boundary net-shaped eutectic phase and meanwhile has good flame retardance and mechanical performance; the ignition point is 750-1200 DEG C, the yield strength is 130-200 MPa, the tensile strength is 230-300 MPa, the ductility is 5-20%, and the aluminum alloy is suitable for industrial production.

The invention discloses a low-permeability rock breakthrough pressure testing method based on schlieren imaging. The method comprises the following steps: putting a test rock sample into a confining pressure cavity of a rock sample holder; the injection end of the rock sample holder is connected with the fluid injection module, the outlet end of the rock sample holder is connected with the schlieren cavity, and the confining pressure cavity is connected with the confining pressure injection module; vacuumizing a pipeline of the testing device, injecting a degassed purified water medium into the schlieren cavity, and then carrying out optical path debugging until a clear schlieren image is acquired; loading confining pressure stress on the test rock sample, injecting water until the test rock sample is saturated, injecting carbon dioxide, observing a schlieren imaging system, recording a schlieren image of carbon dioxide breakthrough by a high-precision camera when the carbon dioxide breaks through the saturated rock sample, recording the breakthrough moment of the carbon dioxide, and recording the upstream and downstream pressure difference value at the moment; the breakthrough pressure is the breakthrough pressure of the carbon dioxide of the tested rock core sample. According to the invention, a trace concentration of carbon dioxide can be visually observed to break through the rock sample, so that the breakthrough pressure of the low-permeability rock can be accurately detected.

The invention relates to a method for manufacturing a post device (10) comprising a tubular plastic element (1) and a post (2) formed from a mouldable material and arranged in the tubular plastic element (1), this method comprising a step of pressure injection moulding the mouldable material into the tubular element (1), wherein the tubular element (1) is arranged, during the pressure injection moulding step, in a direction inclined relative to a horizontal plane (21).

The invention discloses automobile structural member high-performance aluminum alloy die-casting equipment, and relates to the technical field of automobile structural member die-casting molding, the automobile structural member high-performance aluminum alloy die-casting equipment comprises a base, and a pressure injection device is fixed on the upper end face of the base; the supporting seat is fixed on the base; the movable mold plate is arranged on the supporting seat in a sliding manner; the press machine is fixed in the supporting seat, and the output end of the press machine is connected with the bottom of the movable template; the fixed mold plate is fixed on the supporting seat and is communicated with the pressure injection equipment; the pressurizing assembly is fixed to the supporting base, and the output end of the pressurizing assembly is connected with the movable mold plate; the multiple self-locking assemblies are arranged in the fixed mold plate in a sliding mode; the mold locking assembly is installed on the upper end face of the supporting base.

The invention relates to the technical field of plastic molding processes, and discloses a negative pressure injection molding plastic molding method and device. The method comprises the steps that in the negative pressure injection molding process, gas parameter data of a plurality of monitoring points in a mold cavity are obtained in real time; based on the change of the gas parameter data of each monitoring point, identifying the state of the gas pushed by the melt, and determining the propulsion path of the melt flowing front edge in the cavity; according to the propelling path, the melt filling progress and the filling time sequence of all areas in the cavity are calculated; and based on the filling progress and the filling time sequence, generating evaluation information of the filling state of the melt in the cavity. According to the method, the real-time visual prediction of the melt filling process in the mold is realized, and the control accuracy of the negative pressure injection molding process and the stability of the product quality are improved.

The utility model provides a vertical low-pressure injection molding machine which comprises a rack, a mold pressing plate, a material nozzle floating plate and an injection molding barrel, a positioning seat is arranged on a workbench of the rack, and an injection molding mold is positioned and mounted on the positioning seat; the mold pressing plate is mounted above the positioning seat in a lifting manner and is used for pressing the injection mold during injection molding; the material nozzle floating plate is installed above the die pressing plate in a lifting mode, and a driving piece is installed on the material nozzle floating plate. The injection molding material cylinder is installed on the material nozzle floating plate, the lower end of the injection molding material cylinder is provided with a material injection nozzle, and the material injection nozzle penetrates through the mold pressing plate and is arranged on the lower side of the mold pressing plate; the upper end of the injection molding material cylinder is connected with a material pushing air cylinder, and a material pushing rod of the material pushing air cylinder is arranged in the injection molding material cylinder; the vertical low-pressure injection molding machine overcomes the defects that an existing injection molding machine is high in pressure and poor in injection molding quality, and the injection nozzle is prone to glue leakage.

The invention discloses a forming processing method of a composite material gas cylinder, which comprises the following steps of: positioning and embedding a pre-processed metal valve seat into a cavity of an injection mold, and performing high-pressure injection molding to form a lining pre-formed body wrapping the metal valve seat; and transferring the liner preform to blow molding equipment for blow molding integrated molding to prepare the gas cylinder liner which is integrated with the metal valve seat in a weldless manner, zero in interface gap and high in bonding strength. The method comprises the following steps: calculating laying parameters of a composite gas cylinder winding layer by adopting a grid theory on the basis of a dry-method prepreg yarn principle, and obtaining a laying layer design scheme; laying a carbon fiber winding layer on the outer surface of the gas cylinder lining subjected to surface treatment according to a laying design scheme based on a dry-method prepreg yarn winding technology; and the high-pressure composite material gas cylinder product is obtained through cooperative treatment of heating curing and mold pressing. The problems that the precision requirement of a traditional technology is difficult to meet and labor cost is high are solved.

The invention discloses an energy-saving reaming device for geological exploration, and relates to the technical field of geological exploration. The device comprises a supporting body disc, a pinch plate supporting body and a center fixing body, a swinging reaming blade is arranged outside the center fixing body, and the angle of the reaming blade is controlled through water pressure injected into a drill rod. A piston disc, an outer side sleeve, an inner side sleeve and a thread transmission structure are arranged, so that the broaching blade is gradually unfolded; and meanwhile, stable locking of the reaming angle is achieved through cooperation of the locking limiting block and the locking limiting shaft. The device is provided with an exhaust hole, an injection hole and a one-way valve, and it is ensured that fluid pressure is effectively adjusted in the reaming process. Different from a traditional mode that the drill bit needs to be replaced many times, the device can finish reaming of different diameters only through one-time replacement, energy consumption is remarkably reduced, efficiency is improved, and the device is particularly suitable for deep well and shale gas exploitation operation.

The invention relates to the technical field of high-pressure injection control, and discloses a high-pressure injector intelligent control system based on the 5G technology. An injection pressure dynamic adjusting module driven by a microcontroller of the system analyzes pressure fluctuation characteristics and generates a primary pressure compensation instruction; the fluid state reconstruction module is used for calculating fluid state reconstruction parameters in combination with the real-time flow velocity data; the multi-channel cooperative control module distributes a pressure compensation weight and generates a channel cooperative instruction set based on reconstruction parameter analysis; the abnormal pressure tracing module monitors abnormal pressure sudden change points of each unit, traces corresponding fluid state parameter change tracks and outputs tracing mark data; the injection path optimization module re-plans a propulsion path trajectory based on the marked data to generate a three-dimensional path optimization parameter table; and the safety threshold self-correction module dynamically adjusts the boundary value of the pressure threshold sequence according to the track offset, and outputs an updated safety threshold parameter set to the microcontroller.

The invention discloses drilling and polishing combined machining equipment based on hardware precision machining, and relates to the technical field of machining machine tools, the drilling and polishing combined machining equipment comprises a drilling machine, a hydraulic telescopic rod is arranged on the outer side of the drilling machine, a machining assembly is arranged at the telescopic end of the hydraulic telescopic rod, and the drilling and polishing combined machining equipment further comprises a drilling supporting table arranged below the machining assembly; a clamping assembly is arranged at the top of the drilling supporting table. The supporting pieces are pushed to move and rise through magnetic force, the multiple supporting pieces can be attached to the bottoms of the workpieces under the action of magnetism, liquid is injected into the mounting frame through the injection molding assembly after attachment is completed, the supporting pieces can be kept stable after rising, and annular attachment supporting is conducted on the positions, needing drilling, of different workpieces.

The invention discloses a method and a device for measuring the breakthrough pressure of a low-permeability cap based on absorption spectrum sensing. The measuring device comprises a confining pressure injection module, a data monitoring module, a return pressure setting module, an absorption spectrum sensing module, a rock core holder module and a pore pressure injection module. According to the invention, the breakthrough pressure of the low-permeability cap layer can be tested, the test work can be reliably and efficiently completed, and a pressure signal and an absorption spectrum signal are comprehensively utilized; the absorption spectrum is innovatively applied to the breakthrough pressure test, the rock sample breakthrough moment can be accurately and effectively judged, the sensitivity limitation and delay of pressure monitoring in the low-permeability cover layer test are avoided, and a good detection and tracking system is provided for breakthrough pressure calculation, breakthrough position and form change of displacement fluid; meanwhile, according to the gas monitoring function, the process and efficiency of gas breaking through the rock core can be monitored in real time to a certain extent.

The invention provides an oil reservoir flow regulating agent injection system, a control method thereof and a storage medium, and relates to the field of filling equipment. The system comprises a central control module, a spiral lifting feeding module, a skid-mounted stirring tank module and a high-pressure flow regulating pump skid-mounted module, and the spiral lifting feeding module comprises a shaftless spiral lifting machine, a discharging hopper and a variable-frequency speed regulator; the skid-mounted stirring tank module comprises a tank body, a stirring and mixing module and a signal acquisition module; the signal acquisition module comprises a liquid level sensor and an online viscometer which are mounted on the tank body. According to the oil reservoir flow regulating agent injection system, full-process automatic operation of the flow regulating agent from raw material conveying to high-pressure injection is achieved.

The utility model relates to the technical field of low-pressure injection molding equipment, and discloses a low-pressure injection molding adjustable cloth hanging needle combined mechanism which comprises a mounting frame body and a cloth hanging needle, a movable mounting block is mounted at the bottom of the cloth hanging needle, and a limiting assembly is mounted in the mounting frame body; a storage groove is formed in one side of the cloth hanging needle, a cutter strip is slidably mounted in the storage groove, a mounting groove communicated with the storage groove is formed in the movable mounting block, a moving assembly driving the cutter strip is mounted in the mounting groove, a stop block is mounted at the bottom of the mounting frame, and when the cloth hanging needle moves, the stop block limits the moving assembly. And the moving assembly moves the cutter strip out of the storage groove. Compared with the prior art, the fabric cutting device has the advantages that when the moving range of the movable mounting block and the cutter strip is large, and the sliding deformation space is insufficient, the sliding block is limited through the check block, the sliding block drives the cutter strip to move out of the containing groove, fabric is cut, and the hand is protected when the fabric is mounted.

The utility model discloses a high-pressure injection molding platform of a high-speed copper cable, which comprises an injection molding assembly for carrying out injection molding on a cable of the high-speed copper cable, and further comprises a clamping tool I and a clamping tool II, the clamping tool II comprises a base, and the base is provided with a groove I for installing the cable at the rear end of the high-speed copper cable; an upper cover is hinged to one side of the upper end face of the base, a groove II matched with the groove I is formed in the lower surface of the upper cover, and anti-skid layers are arranged on the contact faces of the groove I and the high-speed copper cable and the contact faces of the groove II and the high-speed copper cable. A buckle used for fixing the closed upper cover is hinged to one side wall of the base. A PCB at the front end of a high-speed copper cable is fixed through the clamping tool I, a base groove I of the clamping tool II is matched with an upper cover groove II, a cable at the rear end is limited, front and back dual fixation is formed, meanwhile, the friction force between the anti-skid layers on the groove I and the groove II and a cable sheath is increased, and the cable is prevented from sliding.

The utility model relates to the technical field of engineering machinery, in particular to a pressure injection oil filling device which comprises a movable base and a cylinder body connected to the base and further comprises a pump body mechanism connected to the base and used for driving oil liquid to flow. The oil storage bin is located in the cylinder body and used for receiving and storing oil liquid, and the output end of the oil storage bin communicates with the input end of the pump body mechanism through a first channel. By means of the pump body mechanism, the oil liquid in the oil storage bin is guided into the oil guide bin till the oil guide bin is filled with the oil liquid. And then the output end of the connecting mechanism is connected with the input end of a to-be-added suspension cylinder, then the pump body mechanism is used for enabling oil in the oil storage bin to continuously flow into the oil guide bin, and the oil in the oil guide bin is continuously guided into the suspension cylinder through the connecting mechanism, so that the problem is solved.

This invention provides a method for preparing high-purity silicon carbide parts based on low-pressure injection molding, belonging to the field of silicon carbide material preparation technology. The invention involves mixing wax, dispersant, reinforcing agent, and silicon carbide powder with a purity ≥99.995wt% in a mixer. The resulting slurry is placed in a low-pressure injection molding machine and injected into a mold under heating and pressurization conditions for molding. After demolding, the resulting preform undergoes dewaxing and debinding treatment. The dewaxed preform is then placed in a purified graphite kiln and sintered in a high-temperature resistance furnace to obtain the high-purity silicon carbide parts. This invention eliminates all possible introduction of metallic impurities during the material preparation, molding, dewaxing, and sintering processes, enabling the preparation of high-purity silicon carbide parts with a purity ≥99.99wt%.

The present invention relates to the technical field of composite material preparation, and particularly relates to a preparation device and a preparation method for near-net-shaped large-size carbon / carbon composites, including a vacuum pumping system, a resin high-pressure injection system, a heating system, an upper support plate, a lower support plate, a resin injection pipeline, an upper mold provided on the bottom surface of the upper support plate, a lower mold provided on the lower support plate, and an air extraction port provided on the upper mold. A fixed support column is provided on the lower support plate and is connected through a horizontal adjustment mounting assembly. A through hole adapted to the fixed support column is provided on the upper support plate. The resin injection pipeline passes through the upper mold and extends into the molding cavity formed by the closing of the upper mold and the lower mold. The resin injection pipeline includes a main injection pipeline and a plurality of branch injection pipelines connected to the main injection pipeline and evenly distributed from the upper part to the lower part of the molding cavity. The fixed support column penetrates through the through hole on the upper support plate to ensure the alignment of the fixed support column with the through hole on the upper support plate, which is convenient for actual operation.

The application belongs to the technical field of high-pressure die casting production of lower vehicle body, and particularly relates to an integrated lower vehicle body double-pressure injection die casting process, which realizes rapid forming production of the lower vehicle body through cooperation of two pressure injection systems and a die casting die module with a double pouring system. The integrated forming of the lower vehicle body can be realized at one time through the die casting process, and the production efficiency of the lower vehicle body is greatly improved. Meanwhile, the die casting machine has two independent pressure injection systems which cooperate with a double-pressure injection position pouring system. The integrated lower vehicle body is filled symmetrically, the pouring efficiency of the lower vehicle body is ensured, and the uniformity of the mixed aluminum liquid is ensured through counter-attack of the two pouring systems.

This invention relates to the field of unconventional oil and gas development technology, and to a device and method for quantitatively evaluating the permeability enhancement caused by oxidative thermal stress in shale oil. The former includes a triaxial core holder housed within a constant-temperature chamber, and confining pressure injection system, oxidation medium injection system, detection medium injection system, gas collector, upstream storage tank, downstream storage tank, chromatograph, and acoustic emission sensor spaced apart outside the chamber. This application provides a dynamic multi-field coupled physical simulation system capable of simulating real formation conditions. By collecting pressure, product composition, acoustic signals, and nuclear magnetic resonance relaxation data, it utilizes a mathematical model for dynamic inversion of porosity and permeability using the pressure pulse attenuation method. It integrates acoustic emission RA-AF source identification and nuclear magnetic resonance fractal evaluation to analyze the multi-field coupling effects of thermal, flow, force, and chemical fields generated during air injection, and quantitatively evaluates the degree of improvement in shale permeability and pore structure caused by oxidative expansion.

The utility model provides low-pressure injection molding fabric turn-up equipment, and belongs to the technical field of automobile part machining. The low-pressure injection molding fabric turn-up equipment comprises a rack, a welding machine and a rotating table, the welding machine and the rotating table are arranged at the two ends of the machine frame respectively, the two bottom die jigs are symmetrically arranged on the rotating table, each bottom die jig corresponds to the multiple pressing assemblies and the edge pushing assemblies, the pressing assemblies press the low-pressure injection molding fabric to be reversely wrapped, and the edge pushing assemblies are arranged on the bottom die jigs. The side edge of the low-pressure injection molding fabric is pushed to be folded through the edge pushing assembly, then the side edge is rotated to the welding machine through the rotating table, spot welding is conducted on the folded side edge through a welding head of the welding machine, reverse wrapping machining is achieved, manual operation is not needed in the reverse wrapping and spot welding process, more time and labor are saved, meanwhile, the same machining standard can be achieved, and the product quality is ensured. And the machining requirement of feeding and discharging and spot welding at the same time can be met through rotation of the rotating table, and the machining efficiency is further improved.

The application discloses a pressure injection flow control system of a die casting machine, which comprises a large flow valve group, a small flow valve group and a control module; the large flow valve group and the small flow valve group are connected with input ends and output ends of a pressure injection cylinder respectively; the control module is suitable for controlling the opening degrees of the large flow valve group and the small flow valve group according to a pressure injection mode, and simultaneously correcting the opening degrees of the large flow valve group and the small flow valve group according to an actual operation state of the pressure injection cylinder, so that starting overshoot can be effectively avoided. The application further discloses a pressure injection flow control method of a die casting machine, which comprises the following steps: selecting the opening number of the small flow valve group and the large flow valve group according to a pressure injection mode of a pressure injection cylinder; and controlling the opening degrees of the large flow valve group and / or the small flow valve group in real time through a closed loop, so as to realize pressure injection precision control of the pressure injection cylinder, thereby effectively improving the response speed of the pressure injection cylinder in a pressure injection process.

The present invention relates to a positive and negative pressure injection inerting system and method for rapid fire prevention and extinguishing in goafs, belonging to the field of fire prevention and extinguishing in goafs; it solves the problem of poor fire extinguishing effect of existing fire extinguishing methods in goafs; the technical solution is: it includes a first gas injection main pipe and a plurality of air collecting devices, the air collecting devices are placed in the first gas injection main pipe, the air collecting devices and the first gas injection main pipe are gap-matched, the first gas injection main pipe is connected to the gas injection equipment, an air flow channel is provided through the air collecting device, the air collecting air inlet of the air flow channel is interconnected with the first gas injection main pipe, the air collecting air outlet of the air flow channel is connected to a pumping branch pipe, the low-pressure part of the air flow channel is connected to one end of the main drilling pipe through a gas return pipe, the gas return pipe and the air flow channel are interconnected, the main drilling pipe is arranged in the goaf, and the other end of the main drilling pipe is connected to the second gas injection main pipe, so as to achieve the effect of rapid fire extinguishing coordinated by pumping and injection; the present invention is applied to fire prevention and extinguishing in goafs.

Method for manufacturing at least one cooling plate for a battery cell cooling device. The invention relates to a method for manufacturing a cooling plate comprising: a step of providing a first part, a step of supplying a first mold, during which a first mold (8) is supplied, comprising a first cavity (9) configured to form on the first side (6) of the first part (4) the external face of an inner wall of a first cooling plate, a step of supplying a second mold, during which a second mold (13) is supplied, comprising a second cavity configured to form on the second side (7) of the first part (4) the external face of the outer wall, an assembly step, during which the first mold (8) and the second mold (13) are assembled together in a sealed manner.a pressure injection forming step following the assembly step, during which a fluid is injected under pressure into the mold cavity, resulting in the formation of the first cooling plate with a hollow internal cross-section. Figure to be published with the abbreviation: Fig. 6,

The application discloses a die-casting forming device for high-pressure pump part machining, which comprises a base, a mold closing system and a pressure injection system; the mold closing system comprises a fixed mold plate fixed on the base, a sliding mold plate sliding on the base, a hydraulic drive device for driving the sliding mold plate to slide, and a cooling mechanism for cooling a high-pressure pump part mold; the cooling mechanism comprises a cooling box body fixed on one side of the fixed mold plate, a low-temperature chamber and a high-temperature chamber arranged in the cooling box body, a serpentine pipeline fixed in the cooling box body, a liquid exchange channel connecting the low-temperature chamber and the high-temperature chamber, a liquid exchange-out pipe with one end connected to the low-temperature chamber, a liquid exchange-in pipe with one end connected to the high-temperature chamber, and a liquid exchange pump connected to the other ends of the liquid exchange-out pipe and the liquid exchange-in pipe respectively; a male die of the high-pressure pump part mold and a female die are fixed on opposite sides of the cooling box body and the sliding mold plate respectively. The application has the advantages that the high-pressure pump die-casting part is uniformly cooled and cooled down, and the service life of the mold is prolonged.

The application discloses a micro-visualization slice for shale bedding flow characteristic analysis and a manufacturing method thereof. The method can comprise the following steps: grinding a shale slice obtained by slicing a shale sample, and grinding the shale slice to a thickness of 30-40 microns; clamping the ground shale slice in the middle by using two pieces of organic glass slices with a thickness of 0.2-0.3 mm, and placing the clamped shale slice in an inlaying machine to perform hot pressing, so that the organic glass slices and the shale slice are pressed into one; drilling a hole in the radial direction of the organic glass slice by using a drill bit with a diameter of 0.7-0.9 mm, so that the hole after drilling is communicated with the shale slice; inserting one end of a quartz micron tube with an inner diameter of 0.5 mm into the hole to fix the quartz micron tube, and connecting the other end of the quartz micron tube with a quartz tube line with an inner diameter of 1.6 mm, so as to manufacture the micro-visualization slice for shale bedding flow characteristic analysis. The micro-visualization slice can lay a foundation for subsequent visualization seepage experiments of different bedding types, pressures and injection media, and clarify different beddings to shale gas reservoir flow patterns and development characteristics.

The application provides a geothermal development simulation test device and method, the geothermal development simulation test device comprises a high-temperature and high-pressure resistant container (6), a high-pressure injection system (1), a confining pressure loading system (2), an axial pressure loading system (3) and an axial pressure unloading system (4), the high-temperature and high-pressure resistant container (6) comprises a core containing cavity and a piston containing cavity which are sequentially communicated, and the core containing cavity can contain a core sample (606); the confining pressure loading system (2) can apply confining pressure to the core sample (606); the axial pressure loading system (3) can apply axial pressure to the core sample (606) through a piston (610); and the axial pressure unloading system (4) can remove the axial pressure applied to the core sample (606) through the piston (610). The geothermal development simulation test device and method can more truly simulate the geothermal development process.

The utility model provides a kind of multifunctional casting machine, including the smelting furnace that can melt metal is injected into mould under the action of pressure by pressure injection port;And the mould that can be side provided with pouring gate is closed, and drive mould to move to make pouring gate close or away from the mechanical hand of the pressure injection port;Pressure injection port is set to the side of smelting furnace along horizontal line;Mechanical hand is set on base, and first drive is set on base, and it can drive mechanical hand to rotate along the axis of pressure injection port. Realize pressure casting while its mechanical hand can be driven under the first drive and rotate along the axis of pressure injection port, to realize mould and turn over along axis, so first cooling cavity can be turned over to bottom, to realize complement by the gravity of melt metal itself, this mode can realize the double complement of pressure maintaining and gravity, greatly reduce the problem of internal and external surface shrinkage of part;And its structure is simple and cost is lower.

The utility model discloses an intelligent-control automatic wax pressing and injecting device for accessories, and relates to the field of accessory processing equipment. The intelligent control accessory automatic wax pressing and injecting device comprises a control box, a material injecting unit and a forming unit, a high-frequency electromagnetic induction heater is arranged in the material injecting unit, a material injecting pipe is fixedly installed at the bottom of the high-frequency electromagnetic induction heater, and a servo linear motor is arranged at the top of the high-frequency electromagnetic induction heater. According to the intelligent-control automatic wax pressing and injecting device for the ornaments, wax at the bottom of the storage hopper falls into a high-frequency electromagnetic induction heater to be rapidly melted through the high-frequency electromagnetic induction heater, meanwhile, a servo linear motor drives a material injecting pipe to be inserted into a mold, and then the servo linear motor drives a material pushing part to continue to move downwards; the material pushing part injects the molten wax material into the mold through the material injection pipe, wax pressing and injection operation is completed, and therefore the wax material is rapidly and evenly molten, meanwhile, the speed and pressure can be effectively controlled during pressing and injection, and the yield is increased.

The invention discloses a motor rotor position sensor for a new energy automobile, and belongs to the technical field of new energy automobile accessories, and the motor rotor position sensor comprises a wire harness sub-assembly, the wire side of the wire harness sub-assembly is fixedly connected with a wire harness support assembly, and the wire end of the wire harness sub-assembly is fixedly connected with a circuit board. The connection position of the wire harness support assembly and the circuit board and the circuit board are fixedly coated with a plurality of low-pressure injection molding shell assemblies respectively, and the sides, away from the circuit board, of the low-pressure injection molding shell assemblies are provided with a plurality of metal embedded rings. The circuit board, the plurality of low-pressure injection molding shell assemblies and the plurality of metal embedded rings are fixedly coated with a high-pressure injection molding shell; the low-pressure injection molding material is used for structural part design, the output precision of the sensor is not affected, meanwhile, the number and thickness of parts are reduced, the double requirements of sealing and structural strength are met, and the problem that the product manufacturing cost is high due to long working hours of epoxy resin sealing and curing can be solved.