324 results about "Metal insert" patented technology

The utility model provides a metal insert which is applied to a plastic shell of a connector, an inner hole of the metal insert is not provided with threads, and the metal insert is suitable for being embedded in an open hole of the plastic shell of the connector. The utility model also provides a connector, wherein the metal insert is embedded in the opening of the plastic shell of the connector.

The invention discloses a mold design method for a rubber part with a metal insert and a vulcanization molding process method thereof.The mold preparation method comprises the steps that firstly, a three-body type mold is designed according to the rubber part and comprises an upper mold, a middle mold and a lower mold, the middle mold, the upper mold and the lower mold are jointly positioned, and the middle mold and the lower mold are provided with glue overflowing grooves; 2, calculating the size of a mold cavity; step 3, mold preparation; the upper die, the middle die and the lower die are all made of 45 # steel, and the heat treatment hardness is 35-40 HRC; the roughness of the mold cavity part is 0.4, and the roughness of the matched part of the mold is 0.8. The vulcanization molding process method comprises the steps of rubber remilling, vulcanization molding, burr cleaning and inspection. Aiming at a rubber product containing an embedded metal ring, the problems of position control of an embedded part and difficulty in mold design are solved, and the problem of batch production is solved; the optimal product performance is ensured by the optimized vulcanization forming process; the environment-friendly effect is improved, and the waste rate is reduced.

The present disclosure relates to a battery unit (100) for an electric vehicle. The battery unit (100) comprises a battery tray (1) made of a composite material and defining an interior space configured to receive a battery (2) comprising one or more battery cells. The interior space is delimited by a bottom wall (3) and one or more lateral walls (4). Further, the lateral walls (4) comprise a side flange (5) extending outwardly from the lateral walls (4), and the side flange (5) comprises one or more embedded metal inserts (6). The metal inserts (6) are configured to receive one or more fasteners to secure the battery tray (1) to a load bearing structure of the electric vehicle. The present disclosure further relates to methods (500) for manufacturing a battery unit.

The invention relates to the technical field of stamping dies, in particular to a continuous stamping die set and stamping process for stamping parts, which comprises a machine body and a vibration energy absorption block, a lower die holder is fixedly arranged on the machine body, an upper die holder is slidably arranged on the machine body, and a plurality of stations are arranged between the upper die holder and the lower die holder. Wherein the machine body comprises a first station generating impact vibration and a second station affected by vibration, and the machine body is further provided with a driving assembly driving the upper die base to move up and down; the vibration energy absorption block is a metal insert, the metal insert is arranged in the lower die base and located on a vibration propagation path between a first station generating impact vibration and a second station affected by vibration, and a geometric structure used for guiding and dissipating vibration waves is arranged on the metal insert. The high-speed stamping device has the advantages that vibration energy crosstalk of an impact station to a precision station in the high-speed stamping process can be eliminated fundamentally, and therefore the production quality of workpieces is guaranteed.

The invention relates to the technical field of blending alloys, in particular to a high-temperature and low-temperature cycle cracking resistant polyester alloy suitable for metal insert injection molding and a preparation method and application of the high-temperature and low-temperature cycle cracking resistant polyester alloy. The polyester alloy is prepared from the following raw materials: PBT resin, copolyester, thermoplastic polyester elastomer, a flame retardant, an antioxidant and glass fibers. The polyester alloy provided by the invention can meet the requirements of metal insert injection molding on material performance and molding, and has excellent flame retardant property; meanwhile, the polyester alloy material meets the requirements that a workpiece does not crack in high-low temperature circulation, is stable in size and not prone to deformation, and has outstanding adhesion and combination capacity with a metal insert.

According to the integrally-formed composite material structure based on the three-dimensional printing and casting technology and the preparation method of the integrally-formed composite material structure, the preparation method of the integrally-formed composite material structure comprises the three steps that firstly, three-dimensional printing is conducted on a first metal material to obtain a metal insert, and then aftertreatment is conducted; and finally, the second metal material is heated to be in a molten state, and finally the integrally-formed composite material structure is obtained. According to the method, the 3D printing metal insert is precisely designed to be in butt joint with a traditional casting process, an integrated composite metal structure is formed, and the precision and sealing performance of mold assembly are ensured. And moreover, the complex-shaped material is manufactured through 3D printing, complex material forming which is difficult to complete through a traditional manufacturing process can be achieved, the requirements of different fields for manufacturing the complex-shaped metal material are met, and the limitation of a traditional titanium-aluminum compounding process is broken through. The integrally-formed composite material structure is a material with high precision, high strength and good surface smoothness.

The application relates to an injection mold with a metal insert plastic part, a core III is coaxially sleeved outside a core II, the core II is arranged to pass through the core III, the core III is coaxially arranged with a lower mold cavity, the core I is coaxially contacted with the core II after being arranged to pass through a distribution channel; when the mold is closed, the core I, the core II and the core III are surrounded after the left mold cavity and the right mold cavity are closed, an upper mold cavity is formed, the upper mold cavity is communicated with the lower mold cavity, the core I forms a smooth section of a bucket neck, the core II forms a sawtooth section of the bucket neck, an upper section of the core III forms a bucket body of the plastic part, a middle section is used for accurately positioning an inner hole of a blade, and a lower section is used for determining the height of the blade at the middle section; the left mold cavity and the right mold cavity are combined to form an outer surface of the plastic part; the lower mold cavity is used for forming a bucket tail of the plastic part. The application completes the forming of characteristic structures such as an inner surface bucket neck, a bucket body and a bucket tail of the plastic part, simultaneously realizes the smooth taking-out of the plastic part after the mold is opened, and the blade insert part can be conveniently arranged in the core III before the mold is closed and accurately placed at a correct position.

The invention discloses a high-temperature fusing fuel gas ball valve, a fuel gas safety control system and an installation method, and relates to the technical field of fuel gas ball valves.The high-temperature fusing fuel gas ball valve comprises a valve body assembly provided with a gas inlet channel, a gas outlet channel and a valve cavity; the valve ball is arranged in the valve cavity; the high-temperature fusing mechanism is arranged at an inlet of the air inlet channel and comprises a fusing support, a fusing valve element and a fusing spring, the fusing valve element and the fusing support are fixed through low-temperature welding flux, the welding flux is melted during overtemperature, and the fusing spring pushes the fusing valve element to achieve hard sealing cut-off; the overflowing cut-off mechanism comprises an overflowing valve element, an overflowing support, a cut-off spring and a sealing gasket, and when the flow exceeds the limit, the overflowing valve element displaces to abut against the sealing gasket to achieve sealing; and the insulating valve cover assembly comprises a metal insert and a PE insulating layer wrapping the metal insert, and is used for electrically isolating the valve body from an external pipeline. According to the multi-safety gas ball valve, the defects of an existing gas valve in the aspects of high temperature, overcurrent and insulation protection are overcome, and the multi-safety gas ball valve is compact in structure, sensitive in triggering, reliable in sealing and lasting in insulation performance.

The application discloses a kind of plasma jet array devices for large size epoxy surface modification, including frame, tank, gas cylinder for loading inert gas, aperture network, high voltage power supply and metal insert;Tank and metal insert are fixed on frame, tank is flat tank and its slot is formed with jet airway for placing and fixing epoxy insulation, the bottom and side of tank are provided with jet spout arranged in array, jet spout is connected by gas inlet pipe, gas inlet pipe is arranged in the inside of side plate and bottom plate of tank;Aperture network is connected on jet spout and connects high voltage power supply, tank is grounded by wire;Metal insert is inserted above epoxy insulation, metal insert is grounded by wire.The application also discloses the use method applied to the above device.Adopting the application, the surface of large size epoxy insulation can be quickly and uniformly modified, and the charge release capacity is improved.

The utility model relates to the technical field of automobile key molds, and discloses an injection molding automobile key mold with a metal insert, which comprises a top plate, a linkage plate arranged at the bottom of the top plate, an alloy copper plate arranged at the bottom of the linkage plate, a fixing plate arranged at the bottom of the alloy copper plate, and a supporting plate arranged at the bottom of the fixing plate. A bottom plate is fixedly connected to the bottom of the supporting plate, a supporting assembly is arranged at the bottom of the top plate and comprises a limiting column, the top of the limiting column is fixedly connected to the bottom of the top plate, and a lantern ring is slidably connected to the outer wall of the limiting column. According to the utility model, the ejector plates are vertically arranged, and the second mold and the first mold are vertically arranged, so that the effect of improving the production efficiency is achieved, and the problems of low efficiency, low yield, high rejection rate, low production cost and the like due to the fact that most parts with metal inserts are generally produced in a manner of manually placing the inserts in a vertical injection molding machine are solved. And the practicability of the automobile key mold is improved.

The utility model discloses a direct insertion type wiring terminal, which comprises an assembly wiring terminal and a connection wiring terminal, the two sides of the outer side wall of the assembly wiring terminal are fixedly connected with assembly blocks, the surfaces of the assembly blocks are fixedly connected with assembly insertion strips, and the two sides of the outer side wall of the connection wiring terminal are connected with connection assemblies. The top and the bottom of the connection wiring terminal are connected with fixing assemblies, and the back surface of the connection wiring terminal is fixedly connected with a metal plug-in. According to the utility model, by pulling and overturning the mounting support plate, the concentric-square-shaped opening in the mounting support plate is clamped with the mounting clamping plate on the fixed pulling plate, and meanwhile, the mounting transverse plate is loosened, so that the mounting insertion strip penetrates through the mounting insertion opening in the mounting clamping plate to be mounted; according to the utility model, the mounting support plate is convenient to further improve the mounting strength between the assembly wiring terminal and the connection wiring terminal, so that the mounting strength between the terminals is enhanced, and the blockage caused by plugging and unplugging is reduced, thereby improving the use effect.

The utility model discloses a composite material rotary table which comprises a swing shaft unit, a rotary shaft unit and a working rotary table, a swing shaft rocker arm of the swing shaft unit, a rotary shaft rocker arm of the rotary shaft unit and the working rotary table are all formed by casting mineral cementing materials, metal inserts are arranged in the swing shaft unit, the rotary shaft rocker arm of the rotary shaft unit and the working rotary table in advance, and the metal inserts provide interfaces for installing other parts. The metal insert positioned on the working turntable comprises a working turntable mounting insert and a workpiece mounting insert; the working turntable mounting insert is used for being connected with a rotating mechanism of the rotating shaft unit, and the workpiece mounting insert is used for mounting a machining workpiece or a tool clamp; the workpiece mounting insert comprises a base disc and a plurality of rod pieces, and the rod pieces are evenly arranged on the periphery of the base disc in a radial mode and extend to the periphery of the working rotary table. According to the utility model, the temperature rise of each part of the rotary table cast by adopting the mineral cementing material is small under the influence of external heat radiation, so that the shape precision of the rotary table is ensured. And the heat transfer is reduced through the combination of the radial workpiece mounting inserts and the mineral cementing material. Therefore, the rotary table can keep stable geometric precision, motion precision, positioning precision and repeated positioning precision.

The utility model provides a plastic product metal insert taking-out tool which comprises a supporting plate, heating pipes are vertically arranged on the supporting plate, and the diameter of each heating pipe is matched with that of a first connecting hole in the bottom of a metal insert of a plastic product; the push rods are arranged above the supporting plate at intervals, the push rods are movably arranged in the length direction of the supporting plate, and the diameter of each push rod is smaller than that of a second connecting hole in the side face of the metal insert. The push rod aligns to the second connecting hole. According to the tool, the metal insert of the plastic product can be fixed and can be heated, and the metal insert can be conveniently taken out and recycled.

The utility model provides a kind of plastic shell electronic oil pump, including plastic shell, motor stator, PCB board, metal back cover, ground terminal and ground copper bar;The lower end of ground terminal is connected with motor stator core, and upper end is welded with PCB board;Metal insert is injection molded outside plastic shell;One end of ground copper bar is welded with PCB board, and the other end is connected with metal insert.The electronic oil pump provided by the utility model has the advantages of lightweight, high power density, low cost, etc., and can meet the CLASS3 requirement of EMC parts.

The utility model discloses a portable replacement formula dissolved oxygen appearance probe structure, including equipment main part, the top of equipment main part is provided with connecting wire, and the one end fixedly connected with the mounting head of connecting wire relative equipment main part, the bottom of mounting head is provided with metal insert piece, and portable replacement formula dissolved oxygen appearance probe structure still includes the plug -in board, and the both sides of plug -in board are relatively arranged in the bottom of mounting head. In the above -mentioned scheme, the mounting head is inserted with the butt joint pipe, makes metal insert piece to be inserted into the insert piece groove, and the plug -in board of setting on the both sides of mounting head bottom enters the plug -in groove, the arc -shaped clamping block of plug -in board bottom setting contacts with the inner wall of plug -in groove and is extruded, and the spring of guiding column inside connection produces the deformation, and arc -shaped clamping block shrinks to the plug -in board simultaneously, makes the whole probe more simple and concise, and the top joint can integrate annular sealing ring, and when the buckle is closed, synchronous compression sealing washer no.

A polyphenylene sulfide resin composition comprises a polyphenylene sulfide resin, and has tracking resistance of 300 V or more, and thermal shock resistance using a metal inserted molded article of 15 times or more. Provided are a PPS resin composition excellent in tracking resistance and thermal shock resistance, and a molded article thereof.

A support bench (100) for automotive repair is disclosed. The support bench comprises a main frame (102) comprising at least two parallel and spaced apart rail members (110) connected to each other by means of one or more cross bars (112). Each rail member (110) comprises a plurality of tubular portions (114) formed one over another in series and at least one metal insert (116) disposed within the tubular portion(114). The metal insert (116) extends along a length of the tubular portion (114). The rail members (110) and cross bars (112) are made of aluminium material. Further, one or more fastener modules (118,120,122,124) are configured to detachably fasten the cross bars (112) to the rail members (110). The bench further comprises chassis clamps (104) attached to the rail members (110) for rigidly connecting a vehicle to the main frame (102). The support bench can be easy of assembly, portable, ergonomic, lightweight, sturdy and easily configurable to accommodate various repair tasks and vehicle sizes.

The invention discloses an automatic pipe fitting feeding and discharging device and an operation method thereof.The automatic pipe fitting feeding and discharging device comprises a frame body, the bottom of the frame body is provided with a horizontal movement connecting mechanism used for connecting and moving a material disc containing metal inserts, and one side of the frame body is internally provided with a feeding mechanism used for moving the material disc up and down; the top of the frame body is provided with a mechanical gripper mechanism used for moving the metal inserts on the trays to a taking station, the side edge of the frame body is provided with a discharging mechanism used for collecting the metal inserts subjected to injection molding, and the middle of the frame body is provided with a roller conveying mechanism used for collecting the empty trays. According to the invention, the process automation is realized, the production efficiency and consistency are greatly improved, and the product quality and the production stability are guaranteed.

The present invention discloses a multifunctional, heat-resistant bottle cap, comprising an assembly and a lower sleeve. The lower sleeve is disposed outside the assembly and further comprises a metal insert disposed between the inner and outer walls of the assembly. The inner wall of the lower end of the lower sleeve is provided with at least one deformation groove, which is used to deform the edge of the lower sleeve at the deformation groove when the bottle cap is pulled. The provision of the metal insert improves the assembly's bottle-hanging strength, providing the assembly with heat-resistant functionality. The provision of the deformation groove also reduces the strength of the lower sleeve. Whenever the bottle cap is pulled, the lower sleeve deforms at the deformation groove, thereby damaging its appearance and achieving a straightforward anti-counterfeiting function.

The present invention discloses a method for manufacturing insert plates for the central trough of a scraper conveyor with an open top, comprising the following steps: S1, using resin material, reinforcing material, and silicon carbide micro powder as raw materials for preparing the insert plate, wherein the mass proportions of the resin material, reinforcing material, and silicon carbide micro powder decrease sequentially; S2, drying the resin material and reinforcing material, and modifying the silicon carbide micro powder to form modified silicon carbide; S3, mixing the modified silicon carbide, resin material, and reinforcing material after processing to form composite particles; S4, adding the composite particles to an insert plate mold, heating, and molding into an insert plate. Therefore, the method for manufacturing insert plates for the central trough of a scraper conveyor with an open top according to the present invention ensures the full curing and performance of the material, and allows for direct replacement of metal insert plates without modifying the main body of the equipment.

The urea kettle downward blowing device comprises a rack, a first blowing needle, a first metal insert and a synchronizing mechanism, the first metal insert is provided with a mounting opening, a plurality of metal tooth-shaped blocks which are evenly distributed in the circumferential direction are arranged on the inner side wall of the mounting opening, a pressing block abuts against the metal tooth-shaped blocks, and the synchronizing mechanism has a first state and a second state. In the first state, the first synchronizing part and the second synchronizing part are connected and rotate relatively; and in the second state, the first synchronous part and the second synchronous part are connected and rotate synchronously, and when the first blowing needle is separated from the first metal insert, the first blowing needle is gradually switched to the second state from the first state. In the process that the first blowing needle is gradually switched from the first state to the second state under the action of the synchronizing mechanism, the rotating torque is gradually increased, so that the acting force borne when the rotating torque is transmitted to the first metal insert is also gradually increased, a gap generated at the joint of the first metal insert and a material due to instantaneous stress can be reduced, and the forming quality is improved.

The invention relates to a metal cooking support (10) compatible with induction heating, having a cooking surface and a heating surface (12), comprising a metal substrate (2) made of aluminum or an aluminum alloy and a mesh-shaped metal insert (3) made of a ferromagnetic material, which is at least partially inserted into the metal substrate (2) on the side of the heating surface (12), the mesh metal insert (3) has an interstrand opening diameter. According to the invention, the mesh metal insert (3) has, in the central portion thereof, a central opening (38) and / or at least one non-central opening (32), the opening cross-section of which is at least equal to two times the interstrand opening diameter, preferably at least equal to three times the interstrand opening diameter, more preferably at least equal to four times the interstrand opening diameter, and the opening cross-section of which is at least equal to three times the interstrand opening diameter, preferably at least equal to four times the interstrand opening diameter. The diameter of the interstrand opening is preferably at least five times the diameter of the interstrand opening. The invention also relates to a cooking appliance and an electric cooking appliance comprising such a metal cooking holder (10).

The utility model relates to an injection molding assembly comprising a metal insert with a positioning cap, the injection molding assembly further comprises an injection molding material, the metal insert is coated in the injection molding material, and the injection molding assembly is characterized in that the positioning cap is made of a plastic material; the positioning cap is fixed at one end of the metal insert; at least one part of the positioning cap is coated in the injection molding material, and the appearance of the positioning cap is matched with that of the injection molding assembly. The utility model further relates to the injection mold.

The invention relates to the technical field of tunnel construction, in particular to tunnel construction grouting equipment which comprises a base and further comprises a drilling and grouting integrated structure connected with the base, the drilling and grouting integrated structure comprises a deviation moving mechanism, the deviation moving mechanism is connected with a clamping rotating mechanism, the clamping rotating mechanism is connected with a set of drilling and grouting pieces, and each drilling and grouting piece comprises a multilateral groove sleeve. The polygonal groove sleeve is connected with an outer sleeve, the outer sleeve is connected with a stepped plug, the outer sleeve is connected with a plurality of groups of metal insertion pieces, the outer sleeve is slidably connected with a hollow pipe, the hollow pipe is fixedly connected with an annular groove sleeve through a butt joint pipe, and the hollow pipe is connected with a tool bit through a hollow conical extrusion head; and the grouting and reloading structure is connected with the base. Through cooperation of the drilling and grouting integrated structure and the grouting and material changing structure, the stability and the sealing performance of installation of the drilling and grouting piece are improved, drilling and grouting operation on the tunnel wall can be completed through one-time clamping, and additional dismounting and replacing operation is reduced.

The application provides a new type of gas insulated rigid power transmission line with a spiral support structure and an optimization method thereof, which comprises three support insulators, a high-voltage conductor, a grounding shell, a high-voltage side / grounding side metal insert, a spiral metal ring and a roller. Compared with the original structure, the spiral metal ring and the roller are used to effectively improve the assembly convenience. The improved stable triangular support structure significantly improves the mechanical strength and stability, avoids the tilting and fracture risks of the three single support insulators caused by unbalanced stress, and can meet the support of conductors with different GIL arrangement angles. The application designs the structure of the new type of spiral support insulator, effectively reduces the electric field and stress of the insulating support insulator, improves the insulating performance, and improves the reliability of the safe operation of the power transmission line.

The invention discloses a cable connector vulcanization mold and a vulcanization method. The vulcanization method comprises the following steps: carrying out roughening pretreatment on the surface of a metal insert to form a microstructure; starting a heating system of the vulcanization mold to heat the mold core area to a preset temperature, and injecting aerial fog containing a coupling agent into the mold cavity so as to form a chemical activity interface on the surface of the mold cavity; the pretreated metal insert is positioned in a mold cavity, the rubber compound is injected into the mold cavity through a spiral feeding port in a rotary propelling mode, and meanwhile the pressure of the mold cavity is kept; applying an electric field while keeping the temperature of the mold core area, and switching to a cooling stage when the dielectric loss factor is reduced to a preset value to obtain a vulcanized product; the vulcanization product is ejected step by step by adopting a multi-stage pressure ejection mechanism, and a low-temperature cooling medium is injected into an ejection gap in the ejection process to perform local shock cooling treatment, so that a finished connector is obtained, the dielectric constant fluctuation is remarkably reduced, and the product obtains ultrahigh dimensional precision and dielectric stability.

The utility model provides an electromagnetically placed metal insert, which comprises a pneumatic holding tool structure, the pneumatic holding tool structure comprises a sliding block, a positioning plate is arranged on one side of the sliding block, connecting grooves are arranged at two ends of the positioning plate, fixing bolts are arranged between the connecting grooves and the sliding block, and a pneumatic holding tool body is arranged on the outer wall of the positioning plate. The metal insert placing device is reasonable in design, bolts or nuts can be fixed through the arranged pneumatic holding tool structure, then the rotating frame structure drives the bolts or nuts to enter an injection molding part to put down the bolts or the nuts, and therefore metal inserts can be automatically placed, meanwhile, the suction cup can suck the injection molding part out of the injection molding part before placing, and the metal inserts can be conveniently placed. And subsequent placement of the metal insert is facilitated, and the production efficiency of injection molded parts is improved.

The present application relates to the technical field of epoxy sleeve, and particularly relates to a stable pressure injection APG pouring process for an epoxy sleeve with a metal insert, which comprises the following steps: S1, epoxy paste is injected into an injection pipeline under pressure, the paste enters a mold cavity through an injection port, and the pressure of the epoxy paste under pressure is P1; S2, the paste temperature of the injection pipeline is monitored during the injection process, and the paste temperature is controlled to be T; S3, the paste pressure P2 at the front end of the injection port is monitored during the injection process, when P2 decreases, the pressure of the epoxy paste under pressure is controlled to be P1+Delta P, and the paste temperature is controlled to be T+Delta T; S4, the paste flow at the front end of the injection port is monitored during the injection process, and the injection amount in the cavity is controlled to be consistent; and S5, a mold heating system is used to heat the mold, the mold is opened after heating, and a product is obtained through secondary curing. The present application can solve the technical problems of the APG pouring process, such as injection pressure fluctuation of the injection port, improve product quality, and save production cost.

The utility model provides the fixed base of the switch and the switch assembly, through the design of combining the non-metal frame and the metal insert, the overall weight and cost of the fixed base are greatly reduced while the structural strength is ensured, and the requirement of modern electronic equipment for light weight is met. The fixing base comprises a metal insert, the metal insert comprises a first connecting part, a second connecting part and a third connecting part, the first connecting part is provided with a first connecting hole, the second connecting part and the third connecting part are connected to the outer side of the first connecting part, the second connecting part is provided with a second connecting hole, and the third connecting part is connected to the outer side of the second connecting part. The third connecting part is provided with a third connecting hole; and the non-metal frame wraps the outer side of the metal insert, a first through hole, a second through hole and a third through hole are formed in the non-metal frame, the first through hole is aligned with the first connecting hole, the second through hole is aligned with the second connecting hole, and the third through hole is aligned with the third connecting hole.

The utility model discloses an injection mold for metal insert injection processing, which comprises a front mold core, a rear mold core, a metal insert, an insert fixing component and a positioning and locking mechanism, the front mold core and the rear mold core are detachably connected through the positioning and locking mechanism, the metal insert is placed on the rear mold core, and the insert fixing component is fixed on the front mold core. An insert fixing assembly is arranged on the top surface of the front mold core, a product ejector pin penetrating through the front mold core is arranged in the insert fixing assembly, the product ejector pin is arranged perpendicular to the mold closing surface, and the product ejector pin abuts against the upper end of the metal insert and limits the metal insert; a filling nozzle is arranged on the front mold core, a sprue runner leading to the metal insert is arranged on a mold closing surface of the front mold core and the rear mold core, the filling nozzle is communicated with the sprue runner, molten plastic liquid is injected from the filling nozzle, the molten plastic liquid flows to the bottom end of the metal insert through the sprue runner, and the lower end of the metal insert is subjected to embedding injection molding processing; the mold is high in mold changing speed, short in contact time with an injection molding machine table, high in injection molding efficiency and capable of greatly improving the productivity.