101 results about "Injection pressure" patented technology

The invention provides a temperature control method and system in plastic product processing, and relates to the technical field of plastic processing.The method comprises the steps that an injection molding machine is connected, operation parameters such as injection pressure and speed are obtained, raw material information is combined, a temperature control procedure is set, and an initial temperature control strategy is set; multi-region temperature compensation and energy consumption optimization are realized through edge computing nodes and environment information; and based on the initial strategy, optimizing the temperature gradient, and combining the compensation result to obtain an optimal temperature control strategy. The problems that in the prior art, due to the fact that fine adjustment cannot be conducted according to different raw material characteristics and mold structures, and the environmental adaptability is poor, the processing quality of plastic products is unstable, and the production efficiency is low can be solved. The forming quality of products is improved, the rejection rate is reduced, and the maximization of energy efficiency is achieved.

The invention discloses an automobile suspension motor shielding sleeve manufacturing method and used injection molding raw materials and an injection mold, after the injection mold is preheated to 200-210 DEG C, glass fibers and PEEK resin raw materials are injected into the mold through an injection molding machine, the front section of a charging barrel of the injection molding machine ranges from 395 DEG C to 400 DEG C, the middle section of the charging barrel of the injection molding machine ranges from 390 DEG C to 395 DEG C, and the rear section of the charging barrel of the injection molding machine ranges from 385 DEG C to 390 DEG C; in the injection stage of the injection molding machine, the injection molding pressure is controlled to be 100-110 MPa, the injection speed is 190-200 mm / s, the dwell pressure is controlled to be 120-130 MPa, the dwell time is 3-5 s, after the dwell is finished, the injection mold is subjected to cooling molding, and a primary product of the automotive suspension motor shielding sleeve is obtained; and then machining the inner hole of the primary product of the shielding sleeve of the automobile suspension motor to a required range. The shielding sleeve of the automobile suspension motor is excellent in shielding performance, high in mechanical strength, long in service life, stable in quality and high in size precision.

The invention discloses a power station air cooling island dry ice auxiliary cooling cleaning system and method, and belongs to the technical field of power station air cooling island cooling. The device is composed of a bimodal gas-solid two-phase flow nozzle, a flow field optimization nozzle support, a working medium supply unit and an intelligent control system. A dual-mode gas-solid two-phase flow nozzle is integrated on the flow field optimization nozzle support, an adjustable rotational flow generator is arranged in the nozzle, dry ice particles can be injected into the inner space of the air cooling unit, the environment temperature is reduced by means of the characteristic that dry ice sublimates to absorb heat, or the dry ice is directly injected to the outer surface of a heat dissipation pipe bundle to achieve efficient cleaning. The intelligent control system automatically switches a cooling mode and a cleaning mode and dynamically adjusts the rotational flow strength, the injection pressure and the dry ice particle size of the nozzle. The heat dissipating capacity of the air cooling island can be enhanced, and the heat dissipating tube bundle can be cleaned in a lossless mode.

The application discloses a kind of cemented filling goaf in power plant flue gas disposal quantity calculation method, the method includes: obtaining filling goaf volume and buried depth etc. Geological data, the physicochemical characteristics such as mineral composition, porosity, permeability of cemented filling body are determined by experiment;Accordingly, the theoretical flue gas fixation capacity of cemented filling body is calculated;Through cemented filling body mineralization sealing flue gas test, the flue gas diffusion range under different injection pressure is obtained, and then the mineralization sealing flue gas efficiency is obtained;According to the test data, the numerical model of cemented filling goaf sealing flue gas is established, the flue gas migration and chemical reaction rate are verified and analyzed, and the mineralization sealing flue gas efficiency is corrected according to the simulation result;Potential formula of filling material sealing power plant flue gas is established, and the flue gas disposal quantity is calculated;According to the measured data of filling disposal power plant flue gas, the potential formula of filling sealing power plant flue gas is verified.The calculation principle is simple, which provides a flue gas injection quantity theoretical calculation method for filling mining disposal process of power plant flue gas.

The application discloses an automatic air supplement method and device for an in-situ leaching uranium gas station and belongs to the technical field of in-situ leaching uranium. The automatic air supplement method comprises the following steps: according to the pressure of a gaseous gas sample storage tank and the injection pressure, automatically controlling the air supplement process of the gaseous gas sample storage tank, so that the pressure of the gaseous gas sample storage tank is greater than the injection pressure; and according to the injection pressure and the liquid injection pressure, automatically controlling the injection process, so that the injection pressure is greater than the liquid injection pressure. Through real-time detection of the pressure of each part of the in-situ leaching uranium gas station, the embodiment of the application realizes automatic and accurate regulation and control of the carbon dioxide system of the in-situ leaching uranium gas station, improves the efficiency and saves manpower.

The application relates to the technical field of building materials, and discloses a steam-pressure aerated concrete heat-insulation wall processing technology, which comprises the following steps: S1, heat-insulation core material pretreatment: cutting vertical-silk rock wool into a designed size, injecting liquid modified polyurethane into the rock wool through a vacuum-pressing device, the injection pressure being 0.5 MPa-1.5 MPa, and keeping for 30 min-60 min; the modified polyurethane is composed of polyurethane prepolymer, a water-repellent agent and a guide agent, and the weight ratio is 100:3-8:0.5-2; S2, concrete pouring: fixing the pretreated heat-insulation core material in a mold, pouring foamed concrete slurry, the water-cement ratio being 0.45-0.55, and the curing temperature being 50 DEG C-70 DEG C. The unique modified polyurethane is gasified to form a microporous structure, stress concentration is effectively relieved, the low-temperature crack resistance index is greatly improved, and the durability and stability of the wall in a low-temperature environment are greatly enhanced.

The application discloses a screening device for heavy calcium carbonate particles, and relates to the technical field of screening, which comprises a frame body, an outer cover installed on the frame body, a support frame fixedly installed in the outer cover, a double-screen assembly rotatably installed on the support frame, and a primary screen assembly rotatably installed in the double-screen assembly, and a tumbling assembly matched with the primary screen assembly is installed on the support frame. Advantages are as follows: the heavy calcium carbonate particle screening device realizes two-stage screening through reverse rotation of double rollers, utilizes the staggered effect to diffuse materials and improves the efficiency; a driving motor is provided to drive a filter plate to scatter the accumulated materials of the inner roller, so that the diffusion of the materials is accelerated; a gas injection rotating pipe with fins is used to further diffuse the materials through pulse blowing, and dust is sucked and discharged at the same time; the rotating pipe is controlled to rotate at variable speed through gas injection pressure, and an elastic expansion rod cooperates with a counterweight ball to knock and vibrate, so that the rotating pipe is prevented from being blocked.

The thermosetting resin composition contains an epoxy resin containing an epoxy compound represented by formula (1), a curing agent, and an inorganic filler. The glass transition temperature of a thermosetting resin composition in which m is 2 and n is 2 in formula (1), measured at a heating rate of 5°C / min using thermomechanical analysis (TMA), is 190°C or more, and the die shear strength of the thermosetting resin composition to copper at 230°C, measured by the following <Procedure>, is 3.0 MPa or more. <Procedure> The thermosetting resin composition is molded using a low-pressure transfer molding machine at a mold temperature of 175° C, an injection pressure of 10 MPa, and a curing time of 120 seconds, and four 10 mm2 test pieces per level are molded on a copper lead frame. Subsequently, the die shear strength between the test piece and the copper lead frame is measured at 230°C using an automatic die shear measuring device. The die shear strength of the four test pieces is adopted.

The application discloses an injection molding method for a toy light guide pipe, which can avoid the occurrence of flow lines and bubbles in the toy light guide pipe after injection molding. The technical scheme is as follows: an injection molding method for a toy light guide pipe, which comprises a mold provided with a cavity, and the cavity is provided with a gate through which glue is injected into the cavity, and the glue injection is divided into five stages, i.e., a first glue injection stage, a second glue injection stage, a third glue injection stage, a fourth glue injection stage and a fifth glue injection stage. The glue injection speed of the first glue injection stage is the largest, the glue injection speed of the third glue injection stage is larger than that of the second glue injection stage and the fourth glue injection stage, and the glue injection speed of the fifth glue injection stage is the smallest. The glue injection pressure of the first glue injection stage is smaller than that of the second glue injection stage, and the glue injection pressure of the second glue injection stage is smaller than that of the third glue injection stage. The application belongs to the technical field of injection molding.

This invention relates to a method and device for detecting material leakage from injection molding machine nozzles, belonging to the field of detection technology. It includes: responding to a fully automatic machine signal; continuously acquiring the current thermocouple temperature and injection pressure values ​​of the nozzle; setting an abnormal temperature; comparing the thermocouple temperature with the abnormal temperature to determine if the nozzle is currently in an abnormal temperature state; determining if the nozzle is currently in an abnormal pressure state based on the injection pressure value; and determining if the nozzle is simultaneously in an abnormal temperature and abnormal pressure state, triggering an alarm and / or stopping the machine. This invention achieves the effect of effectively detecting material leakage from injection molding machine nozzles using only two key parameters—thermocouple temperature and injection pressure—without requiring a large number of additional, highly sophisticated sensors, thus significantly reducing detection costs.

The utility model discloses a mold for preparing a light guide sheet, which comprises a fixed mold assembly, the fixed mold assembly comprises a fixed mold seat, a fixed mold plate and a plunger pusher, a fixed mold insert is arranged below the fixed mold plate, the plunger pusher is embedded in the fixed mold plate, the surface of the fixed mold insert is provided with an upper forming cavity, and the upper forming cavity is communicated with the plunger pusher through a diverter; the movable mold assembly comprises a movable mold base and a movable mold plate, a movable mold insert is arranged on the upper surface of the movable mold plate, a lower forming cavity matched with the upper forming cavity is formed in the surface of the movable mold insert, the upper forming cavity and the lower forming cavity form a pouring cavity, and the plunger pushers communicate with the feeding port. The upper end of the plunger pusher is provided with an adjusting part for adjusting the injection pressure and the injection speed of the plunger pusher, and the fixed mold plate is further provided with a groove body for accommodating the adjusting part. The structure of the fixed mold assembly is optimized, the forming quality of products is improved, the structure of the fixed mold assembly is simple, assembly can be rapidly completed, and the assembly efficiency is improved.

The utility model relates to the technical field of medical consumable detection, in particular to a pressure drop detection device of a breathable film, which comprises an air supply system, a pressure difference detection meter and a combined positioning joint, the combined positioning joint comprises an upper shell, a lower shell and an axial positioning mechanism, the upper shell and the lower shell are coaxially arranged, the bottom surface of the upper shell is arranged to be an annular pressure applying plane, and the bottom surface of the lower shell is arranged to be an annular pressure applying plane. The top face of the lower shell is arranged to be a pressure bearing plane corresponding to the pressure applying plane, and the upper shell and the lower shell are in butt joint and fixed through an axial positioning mechanism. According to the utility model, the combined positioning joint is arranged to quickly fix the breathable film to be detected, the air supply system is arranged to supply air to the first pressure cavity and the second pressure cavity at the two sides of the breathable film and inject pressure, and the pressure difference between the first pressure cavity and the second pressure cavity is obtained through the pressure difference detection meter, so that the air blocking performance of the breathable film is accurately evaluated; the structure is simple, installation is rapid, use is convenient, and continuous detection operation of the breathable film is facilitated.

The invention discloses an injection mold for machining an automobile rearview mirror shell, and relates to the technical field of automobile rearview mirror injection molding, the injection mold comprises an upper mold and a lower mold matched with the upper mold, guide columns are fixedly connected to the four corners of the lower surface of the upper mold, and butt joint holes are formed in the four corners of the upper surface of the lower mold; and the butt joint holes are in one-to-one correspondence with the guide columns in position. According to the injection mold for machining the automobile rearview mirror shell, the driving plate moves upwards to enable the abutting plate to overcome the elastic force of the torsional spring to rotate around the fixing shaft, in the mold closing state, the fixing plate on the side of the upper mold is located on the rotating path of the abutting plate, the bent upper end of the abutting plate tightly abuts against the fixing plate along with opposite overturning of the abutting plate, and therefore the automobile rearview mirror shell is machined. The abutting plate is matched with the fixing plate, further limiting of the upper mold and the lower mold is achieved, relative displacement of the molds due to injection molding pressure in the injection molding process is avoided, the mold closing stability and reliability are effectively improved, and the forming quality of the automobile rearview mirror shell is guaranteed.

The blowing system optimization structure comprises a blowing hose and a blowing pipe, blowing heads are symmetrically and fixedly installed at the bottom end of the blowing pipe, connecting pipes are fixedly installed at the two ends of the blowing hose respectively, a fixing pipe is fixedly installed at one end of the blowing pipe, and the fixing pipe is fixedly installed at the other end of the blowing pipe. An inserting pipe is fixedly installed at one end of the connecting pipe, a limiting groove is formed in the periphery of the inserting pipe in a surrounding mode, a circular groove is formed in the periphery of the fixing pipe, through holes are evenly formed in the periphery of the circular groove in a surrounding mode, limiting balls are arranged in the through holes and matched with the through holes, and a sliding pipe is slidably connected to the periphery of the fixing pipe. When the insertion pipe is connected with the fixed pipe, the guide groove is accurately matched with the guide block, the reliable guiding and positioning effect is achieved, it is ensured that the insertion pipe is rapidly inserted into the preset position, deviation is avoided, meanwhile, the sealing ring is embedded into the sealing groove, compressed air leakage is stopped, it is ensured that blowing pressure is stable, and energy waste is reduced.

The application provides a grouting construction method for medium-sand dolomite gushing confined water, which comprises the following steps: firstly, a drilling machine is used to drill a hole through a sectioned orifice pipe, when the single-hole water inflow is greater than or equal to 40 m 3 / h, a short pipe and a long pipe are connected with a water plugging plate core pipe, and the short pipe is connected with a grouting pipe; secondly, a double-liquid double-injection process is used to inject a double-liquid slurry into the gap between the pipe bundle and the hole through the short pipe; finally, after 6-8s of the double-liquid slurry, a single-liquid single-injection process is used to inject a single-liquid slurry through the long pipe, the injection pressure of the single-liquid slurry is continuously increased, the single-liquid slurry is infiltrated into the stratum by using the long pipe wall grouting divergent hole under the continuous action of the pressure, and an effective water interception curtain and an advanced pre-support system are formed. The method solves a series of problems, such as pressure attenuation, slurry backflow, limited range, long time consumption and limited pressure, which exist in the traditional construction. The method belongs to the field of tunnel engineering construction.

The utility model provides a multi-cavity earphone sleeve injection mold, which belongs to the technical field of molds, and comprises a main runner, branch runners, cavities and a cooling water channel, the main runner is positioned at the central position of the mold, the branch runners are symmetrically distributed by taking the main runner as the center and respectively extend to each cavity, the cavities are symmetrically arranged, and the cooling water channel is arranged between the cavities. And the cooling water channels are tightly attached to the cavity and are symmetrically arranged according to the cavity. According to the utility model, the multiple cavities are symmetrically arranged, and the cooling water channels are arranged according to the layout of the cavities, so that the cavities are symmetrically arranged during use, the consistency of injection molding pressure and melt flow is ensured, the deformation of the mold caused by non-uniform stress during injection molding can be effectively reduced, and the flow path and heat exchange condition of cooling liquid around the cavities are similar; therefore, the temperature gradient of each point on the surface of the cavity is reduced, the imbalance of cooling time in the injection molding period and the product molding defect are reduced, and an efficient mold solution is provided for injection molding production.

The invention provides an input pipeline guiding and limiting mechanism for oil exploitation. The input pipeline guiding and limiting mechanism comprises a bottom plate. The lifting mechanism is mounted on the bottom plate; the rotating mechanism is installed at the output end of the lifting mechanism, the bottom end of the output part of the rotating mechanism is connected with a hollow drill rod, and the bottom end of the hollow drill rod is connected with a drill bit; and the liquid injection mechanism is used for injecting drilling fluid into the hollow drill rod, the power input end of the liquid injection mechanism is connected with a dragging assembly, and the dragging assembly is connected with the output end of the lifting mechanism. The dragging hose used for inputting drilling fluid is guided and limited through the first guide frame and the second guide frame, in the process that the hollow drill rod moves up and down, the moving path of the dragging hose is fixed, and on-site operation personnel and equipment cannot be affected and hindered; meanwhile, the injection mechanism is arranged and matched with traditional drilling fluid injection equipment, the injection pressure of drilling fluid in the hollow drill rod can be increased, and then the flushing effect of the flushing hole in the drill bit is improved.

This invention relates to the field of cement mixing pile construction technology, specifically to a mechanized integrated design for cement mixing piles in silty soft soil. The design includes a mobile box with a control console fixedly connected to its top. A mixing mechanism is mounted on top of the control console. This mixing mechanism comprises a robotic arm, a fixed frame, and a protective cover. Positioning is achieved through the mixing mechanism, a mast, and the robotic arm. After positioning, the robotic arm's telescopic rod pushes the fixed frame downwards, inserting the protective cover into the ground. Once inserted, a motor rotates, driving the mixing blades to rotate and mix the cement. During the sinking and mixing process, the soil stress gradient can be monitored in real time. By dynamically adjusting the grout injection pressure and flow rate, insufficient grout injection pressure and range are avoided, thus ensuring the construction quality of the cement mixing pile. To ensure the permeability of the cement grout, the injection pressure and drill bit speed work synergistically during the sinking and mixing process, with high-pressure injection combined with low-speed mixing.

The utility model discloses a touch switch panel processing mould which comprises an upper mould body and a lower mould body, the upper mould body is clamped at the top end of the lower mould body, the touch switch panel processing mould further comprises a locking injection mechanism, the locking injection mechanism comprises upper locking blocks, lower locking blocks, locking columns, head mounting rods, electric push rods and guide hole plates, the upper locking blocks are symmetrically arranged outside mould bodies on two sides of the upper mould body, and the lower locking blocks are symmetrically arranged outside the mould bodies on two sides of the upper mould body. Locking and injecting mechanisms are arranged on the upper mold body and the lower mold body of the touch switch panel machining mold, and the upper locking blocks and the lower locking blocks of the locking and injecting mechanisms can be matched with locking columns driven by electric push rods for clamping and locking; the locking structure is arranged, so that the locking structure is not easy to displace and separate when the upper mold body and the lower mold body are subjected to injection molding pressure during mold assembly, tight attachment between the upper mold body and the lower mold body is ensured, dislocation or looseness in the machining process is prevented, and the injection molding machining quality of the touch switch panel shell is guaranteed.

The invention relates to the technical field of injection molding and intelligent manufacturing, and discloses a safety system air bag injection mold service life prediction and control method based on the Internet of Things, which comprises the following steps: reading a mold unique identification code and calling a mold reference physical parameter set through an Internet of Things edge data acquisition and control terminal; an actual mold clamping force peak value and an injection pressure waveform function are collected; based on the ratio of the actual mold locking force peak value to the rated mold locking force and the injection pressure waveform function time integral value, a mold locking force overload fatigue factor and a cavity erosive wear factor are calculated respectively, and the product of the mold locking force overload fatigue factor and the cavity erosive wear factor serves as a single equivalent damage increment to update the accumulated equivalent damage value. And judging a life cycle stage according to the accumulated equivalent damage value, executing mold locking force derating control in a fatigue fragility stage, and physically cutting off a mold closing permission signal in a life end stage. According to the invention, through a calculation mode of multi-physics field coupling, the mold life prediction precision and the production safety are improved.

The utility model discloses a kind of dry gas seals for superhigh pressure gas injection centrifugal compressor, it is related to dry gas seal structure field, and it includes: shaft sleeve, primary sealing mechanism, it is sleeved in the outside of shaft sleeve, primary sealing mechanism has primary seal leakage port in communication with atmosphere side, secondary sealing mechanism, block process medium that leaks from primary sealing mechanism but is not discharged from primary seal leakage port to atmosphere layer;Primary sealing mechanism includes first dynamic ring and first static ring, secondary sealing mechanism includes second dynamic ring and second static ring, first dynamic ring and second dynamic ring are made of silicon nitride, first static ring and second static ring are made of silicon carbide, diamond coating is coated on the sealing end face of first static ring.The utility model is by being arranged as silicon nitride material to dynamic ring, it is arranged as silicon carbide material to static ring, and diamond coating is coated on the sealing end face of static ring, to reach the purpose that process medium enters atmosphere when gas injection pressure reaches 45Mpa, is blocked.

It suppresses the generation of unnecessary shear insulation, preventing discoloration, yellowing, and burning of molded products, and dramatically improving molding quality. [Solution] In advance, as molding conditions, at least a torque target value Ts for screw rotation torque T and an upper limit value Ru for screw rotation speed R are set. During the plasticization process, the rotation of the screw 3 is controlled with respect to the torque target value Ts. At the same time, a graphic display screen 51 is popped up by a changeover switch 50 from the normal waveform display screen 11nn, which displays at least one change data of injection speed V, injection pressure Pp, and mold parting opening Lm during molding, to display at least one change data of screw position X, screw rotation torque T, and screw rotation speed R during the plasticization process.

This invention belongs to the field of wax pattern injection molding and discloses a precision casting injection molding die and its quality inspection method. The aim is to solve the problem that current wax pattern molding technology suffers from dimensional deformation after molding due to fluctuations in equipment pressure, flow rate, and time control. Traditional equipment inspection methods struggle to accurately assess these fluctuations, making quality inspection difficult. The injection molding die of this invention includes a runner I, a part wax pattern body, a runner II, a stepped sample, and flow indicator scale lines. During wax pattern injection, the wax liquid passes through the part wax pattern body and further fills the stepped sample. The flow indicator scale lines provide the flow capacity index of the wax pattern filling, reflecting the injection pressure, flow rate, and time characteristics of each wax pattern. This allows for timely recalibration of equipment parameters when the injection quality of the wax pattern changes, maintaining the wax pattern flow index within a stable range and ensuring the injection quality of the wax pattern.

This application provides a method, server, medium, and product for optimizing injection molding machine processing parameters, relating to the field of parameter optimization. The method first collects core process parameters such as injection pressure, barrel temperature, and mold temperature in real time and associates them with equipment serial number data. This data is then input into a product defect prediction model trained by deep learning to obtain the predicted yield rate. Based on the prediction results, an optimization adjustment strategy is formulated and pushed to the operating terminal, which, upon receiving a command, sends it to the injection molding machine for execution. Simultaneously, the actual yield rate of a set number of products is obtained through quality monitoring as feedback, and the optimization strategy is iteratively adjusted accordingly, forming a closed-loop control. This effectively reduces the subjectivity of parameter setting, improves parameter matching, and thus stabilizes the injection molding machine's production yield rate, enhancing the accuracy and stability of process control.

This invention provides a delivery sheath and a delivery device. The delivery sheath includes a straight section and an expanded section. The diameter of the expanded section gradually increases from the distal end to the proximal end. The expanded section provides a certain degree of obstruction to prevent the delivery sheath from falling off relative to the injection joint when it is subjected to axial force after being connected to the injection joint. Furthermore, the expanded section is provided with a flared retaining structure, which is configured to ensure that the minimum diameter of the expanded section is always greater than or equal to a first diameter when subjected to external force. The flared retaining structure further ensures that the expanded section is always kept in an expanded state, preventing the formation of a protruding inner membrane in the inner cavity of the injection joint due to the injection pressure. This prevents the inner membrane of the delivery sheath from being scratched, torn, or even peeled off when the support is inverted into the delivery sheath from the injection joint, at the contact point between the support corrugation and the inner wall of the injection joint cavity.

This invention discloses a method for adjusting injection parameters in horizontal wells with limited wellhead pressure rise. The method includes determining injection capacity evaluation indicators, influencing factors, and the number of levels for each influencing factor; numerically simulating and fitting a single-factor functional relationship to determine the water-polymer injection pressure ratio; obtaining an injection capacity prediction formula under multi-factor conditions using multivariate composite nonlinear regression; fitting parameters to the injection capacity prediction formula using the minimum sum of squared errors method; obtaining calculation formulas for injection rate and polymer viscosity based on the injection capacity prediction formula; calculating the maximum injection rate and maximum polymer viscosity under limited wellhead injection pressure rise conditions; and obtaining the optimal parameters for pressure constraints using the SLSQP algorithm. This application is applicable to polymer flooding development scenarios with limited wellhead injection pressure rise, balancing development efficiency and production safety, and providing technical support for chemical flooding injection.

This invention discloses a molding die, molding equipment, and injection molding method for a porous ceramic matrix. The rear mold of the molding die for the porous ceramic matrix has a molding cavity, and at least two first flow channels communicating with the molding cavity are provided on different sides of the molding cavity. The front mold has a gating gate and a second flow channel, and the second flow channel has at least two first point gating gates, which correspond one-to-one with and are connected to the at least two first flow channels. This invention disperses the injection pressure on the molding cavity during injection by using at least two first point gating gates and at least two second flow channels connected to the first point gating gates. At the same time, the at least two first flow channels located on different sides of the molding cavity make the material feeding in the molding cavity more uniform during pouring, ensuring the stress and density uniformity of the mold blank, and making the pore size distribution on the ceramic atomizing core product after subsequent degreasing and sintering more uniform, thereby ensuring the consistency of the taste of the aerosol generated by the porous ceramic atomizing core.

This invention discloses a molding die for multi-insert injection molded parts. By distributing the molding cavity walls across the front mold, rear mold, and two horizontal oblique pull-out modules, it achieves partitioned molding of the box-shaped main body, extension plate, and wing plate. Columnar inserts are clamped and fixed from the top and bottom by the fixing parts of the front and rear molds; plate-shaped inserts are adsorbed and positioned by the air suction fixing parts on the side pull-out modules; Z-shaped inserts and cubic inserts are supported and pre-positioned by the support parts and misalignment locking parts on the rear mold. The fixing structures of each insert are independent and do not interfere with each other, simultaneously solving the reliable pre-fixation problem of four different types of inserts within a single mold. The middle section of the wing plate is formed by the closing of two horizontally opposing oblique pull-out modules, with its demolding direction consistent with the extension direction of the extension plate, solving the structural fit problem of multi-directional demolding. The support parts ensure that the bottom surface of the staggered inserts forms a uniform glue position with the bottom surface of the cavity, ensuring that the resin can completely cover the inserts and preventing insert displacement caused by injection pressure.

According to the underground engineering nanometer expansion fracturing capsule device, a pressing and plugging pipe and a fracturing pipe penetrate through a plugging bag in a spaced mode, and the pressing and plugging pipe is communicated with an inner cavity of the plugging bag through a water outlet hole; the positioning mechanism is sleeved outside the lower end of the pressing and plugging pipe and synchronously acts with the plugging bag; the upper end of the bottom cylinder is fixedly connected with the lower end of the pressing and plugging pipe; the piston is assembled in an inner cavity of the bottom cylinder; the piston rod is assembled in the guide ring, and the upper end is fixedly connected with the piston; the baffle is fixedly connected to the lower end of the piston rod; the annular limiting plate fixedly sleeves the outer side of the bottom cylinder; the spring sleeves the bottom cylinder, and the upper end and the lower end of the spring abut against the annular limiting plate and the baffle correspondingly; the telescopic liquid injection pipe comprises an inner connecting pipe and an outer injection pressure pipe; the inner connecting pipe is fixedly supported on one side of the bottom cylinder, and the upper end of the inner connecting pipe is connected with the lower end of the fracturing pipe; the outer injection pipe is axially sleeved outside the inner connecting pipe in a sliding manner, and the lower end of the outer injection pipe is fixedly inserted into the mounting hole in the baffle plate. The device can obviously improve the fracturing effect and the construction efficiency.

This invention relates to the field of pet extruded food production technology, specifically to a method for monitoring equipment synergy to improve the core filling rate of hollow pet extruded food. The method includes: acquiring the extrusion pressure, injection pressure, and injection flow rate during equipment operation; obtaining a basic synergy index for a given window based on the fluctuation of the injection pressure within that window and the cross-correlation between the extrusion pressure and the injection pressure; correcting the basic synergy index of the window using the average injection pressure and injection flow rate within that window, as well as the injection pressure and injection flow rate in each window during historical production of qualified products, to obtain an optimized synergy index for that window; acquiring the smoothed synergy index for the current window, and then obtaining the final synergy index for the current window; and using the final synergy index for the current window to determine whether the current production is abnormal.