33 results about "Shell molding" patented technology

The invention relates to the technical field of draining basket shell preparation, in particular to a multifunctional draining basket shell forming preparation process which comprises the following steps: (1) raw material pretreatment: selecting a PET (polyethylene terephthalate) raw material, and drying the PET raw material by a dryer for 6 hours; (2) melting treatment: adding the PET raw material treated in the step (1) into an injection molding machine, and uniformly melting the PET material by controlling the heating temperature of a screw rod; and (3) injection molding: injecting the molten material obtained in the step (2) into a mold, controlling the mold temperature of a hot runner to be 120 DEG C, and adopting a centrosymmetric pouring gate. The invention aims to solve the problems that when the draining basket is produced, residual moisture which is not removed can be quickly vaporized in the heating link of draining basket shell molding, gas generated by vaporization cannot be discharged in time, and the production cost is low. And obvious bubbles, crazes and other defects can be formed in the product or on the surface of the product.

The application discloses a shell slurry performance online quantitative evaluation system and method based on wax mold surface modification, and the system comprises a multi-state wetting wax mold preparation module, an automatic coating and multi-parameter rheological observation module and a precise wax residue analysis module which are sequentially connected and cooperatively work; the multi-state wetting wax mold preparation module selectively manufactures patterned areas with different hydrophilic and hydrophobic characteristics including hydrophilic, hydrophobic and super-hydrophobic on the surface of a standard test wax mold by controlling ultraviolet laser processing parameters; the automatic coating and multi-parameter rheological observation module is used for automatically completing slurry coating and quantifying the leveling behavior of the slurry based on machine vision; the precise wax residue analysis module adopts laser-induced breakdown spectroscopy technology and is used for quantitatively detecting the wax residue on the inner surface of the shell after dewaxing. The application also discloses an online quantitative evaluation method, which can provide direct and reliable data support for optimizing the slurry formula and the shell preparation process, thereby realizing automatic, high-precision and low-cost online quality control and reducing the casting scrap rate from the source.

This utility model discloses a display shell molding mold, including an upper mold, a lower mold, a first molding mechanism, and a second molding mechanism. The upper mold has a cavity, and the first molding mechanism includes a first molding part and a first displacement device. The first molding part has a first molding surface. The lower mold has a core, and the second molding mechanism is disposed on the lower mold. The second molding mechanism includes a second molding part, a mounting base, and a second displacement device. The second molding part has a second molding surface. A first release coating is provided on both the first molding surface and the second molding surface. The core, the cavity, the first molding surface, and the second molding surface form an injection mold cavity. In this way, the design of each component facilitates the ingenious arrangement of the overall mold structure. Combined with the setting of the first release coating, the contact friction between the corresponding molding slider and the injection molded product is reduced, thereby avoiding damage when the injection molded product separates from the corresponding slider, ensuring the molding quality of the injection molded product, and meeting the user's needs.

This invention relates to the field of injection mold technology, and provides a plastic shell molding mold, including a fixed mold base plate, a movable mold base plate disposed on one side of the fixed mold base plate, and a base plate disposed on the side of the movable mold base plate away from the fixed mold base plate. This invention, through the provision of a fixing structure, places two sets of slide rails parallel and symmetrically on one side of the fixed mold base plate and the movable mold base plate. Moving bolts into the mounting groove allows the slide rails to be fixedly connected to the fixed mold base plate and the movable mold base plate respectively via bolts. Both ends of the slide rails are chamfered, allowing the slide rails to quickly move into the sliding groove, thereby enabling the punch and die to be quickly installed and fixed. Under the elastic force of a first return spring, the top of the positioning block moves into the positioning groove, allowing the punch and die to engage with the slide rails respectively via the positioning block, thus enabling the punch and die to be quickly positioned. Replacement is time-saving and labor-saving, thereby improving the working efficiency of the plastic shell molding mold during use.

The present invention discloses a die-casting mold for an aluminum alloy shell of an automobile structural part, and the present invention relates to the technical field of die-casting molds. During the injection process, the material between the injection pipe mouth and the shell molding cavity is not completely separated. After cooling, the material at the connection between the injection pipe mouth and the molding cavity is cooled and shaped at the same time, resulting in adhesion between the molded shell and the material in the injection pipe, resulting in blockage of the injection pipeline. Therefore, after stopping the injection, the baffle and the cavity cylinder are reset and moved upward, and the excess material is overlapped through the gap, so that the material in the molding cavity is separated from the material in the injection pipe, avoiding adhesion between the material in the pipeline and the material in the molding cavity after cooling, resulting in blockage of the injection pipeline and increased difficulty in demoulding. At the same time, the heat insulation ring blocks the internal heat from being conducted to the cooling cavity, so that the material in the injection pipe can be maintained within a stable temperature range when the material in the molding cavity is cooled.

The utility model discloses an electronic cigarette shell forming die. The electronic cigarette shell forming die is characterized by comprising an upper die, a lower die and a forming sliding block mechanism, the forming sliding block mechanism comprises four forming sliding blocks, an inclined guide column and an elastic reset piece, the lower mold is provided with a mold core, the four forming sliding blocks are arranged around the four side faces of the mold core, the three forming sliding blocks are provided with first forming faces, the mold core is provided with a second forming face, the second forming face is provided with a cigarette holder forming part, and the other forming sliding block is provided with an extending part. The extending part is provided with a third forming face, and the mold core is provided with a first sliding groove. The inclined guide pillar is arranged on the upper die; the upper die is provided with a cavity, and the cavity is provided with a fourth forming surface; an injection mold cavity is defined by the first to fourth molding surfaces; thus, through the design of all the components, integrated injection molding of the cigarette holder and the shell is achieved, the follow-up assembly operation between the shell and all the components is facilitated, and therefore the production efficiency and quality stability of products are improved, the yield of injection molding workpieces is guaranteed, usability is good, and the application range is wide.

The present invention relates to the technical field of fuel tank processing, and in particular, to a fuel tank processing method, a fuel tank, and a vehicle. The processing method comprises: based on a rectangular material plate, notches are respectively processed at both ends of the first side of the material plate. After the notch cutting is completed, the material plate is bent so that the first side and the second side of the material plate have an overlapping area to form a cylindrical shell. Based on the shell molding, the overlapping area is welded by resistance welding. Based on the completion of welding on the overlapping area, the end cover is positioned at the end of the corresponding shell so that the end cover and the shell have a fitting area. Based on the completion of positioning the end cover, the fitting area is welded by resistance welding. Based on the completion of welding on the fitting area, filler welding is performed along the edge line of the notch to form a welding portion, and the end cover welding is completed. Based on the completion of welding of both end covers to the shell, the fuel tank processing is completed. In this way, the problem of the end cover of the fuel tank being not firmly welded to the shell is solved.

A tooling assembly (102) for forming a can end shell includes an upper tool assembly (104), a lower tool assembly (106), and at least one force measuring device (132) within at least one of the upper tool assembly (104) or the lower tool assembly (106). The upper tool assembly (104) and the lower tool assembly (106) cooperate in the can end shell forming process to form the can end shell from a metal blank. The force measuring device (132) measures the load in the upper tool assembly (104) and / or the lower tool assembly (106). A can end shell forming method includes receiving a metal blank between an upper tool assembly (104) and a lower tool assembly (106), coordinating the upper tool assembly (104) with the lower tool assembly (106) so that at least one upper forming surface and at least one lower forming surface form the metal blank into a can end shell, and measuring the load using a force measuring device (132).

The invention relates to the field of metal investment precision casting, in particular to a precision casting shell modeling and positioning device and a using method. The positioning device is of a semicircular structure composed of an inner positioning layer and an outer positioning layer, the outer positioning layer and the inner side of a sand box are positioned in a contact mode, the outer positioning layer is matched with the inner side of the sand box in shape and tightly attached to the inner side of the sand box, the outer positioning layer and the inner positioning layer are fixedly connected, and the inner positioning layer and the fixed position of the outer side of a shell are positioned in a contact mode. And the shape is consistent with that of the outer side of the shell positioning part. After the shell is put into the sand box by using the positioning device, the position of the shell in the sand box can be determined, the relative height of outer layer positioning and inner layer positioning in the positioning device can be adjusted according to the molding requirement of the shell, and then the spatial position of the shell in the sand box is fixed; and the purpose of unifying the spatial positions of all the shells in the sand box is achieved. The positioning device is simple in structure, low in cost, high in practicability and remarkable in economic benefit.

The invention discloses a method for producing a high-precision corrosion-resistant casting through shell mold casting and application of the method, and belongs to the technical field of casting. The method comprises the steps of shell mold manufacturing, shell boxing, melting casting and casting taking-out, specifically, precoated sand containing chromite sand, modified phenolic resin and the like is prepared, after shell manufacturing, steel shots are filled for compaction, molten iron containing C, Si, Ni, rare earth and the like is cast at the temperature of 1350-1400 DEG C, and after cooling, the casting is taken out and cleaned. According to the method, the corrosion resistance, the precision and the mechanical property of the casting are improved through material component collaboration and process optimization, and the method is suitable for the fields of pump valves, marine equipment and the like.

The invention relates to the technical field of automobile part forming, in particular to an injection mold for a vehicle-mounted electronic tag shell, the injection mold comprises a fixed mold base and a movable mold base, the fixed mold base is provided with a middle mold core, a first slide and a second slide, and the middle mold core, the first slide and the second slide can define a side shell forming cavity; the movable mold base is provided with a top shell forming cavity used for injection molding of the top of the vehicle-mounted electronic tag shell. The middle mold core is provided with a first gas needle capable of moving up and down, and the first gas needle is connected with a gas generating device through a first gas pipe; and a first gas outlet is formed in the top of the peripheral side face of the first gas needle and can inject high-pressure gas between the middle mold core and the inner side face of the vehicle-mounted electronic tag shell, and the pressure of the high-pressure gas is smaller than the glue injection pressure maintaining pressure. The invention further relates to an injection molding method of the vehicle-mounted electronic tag shell. Compared with the prior art, the problem that a clamping opening has bright marks after the vehicle-mounted electronic tag shell is subjected to injection molding can be solved.

The invention relates to the technical field of casting equipment, in particular to precoated sand shell mold casting equipment. The invention provides precoated sand shell mold casting equipment which comprises a base, rolling wheels which are evenly distributed are rotatably connected to the base in the horizontal direction and used for bearing and conveying a lower mold, guide frames which are symmetrically distributed are fixedly connected to the base, and first sliding blocks are slidably connected to the interiors of the guide frames in the vertical direction; an upper die is connected between the symmetrically-distributed first sliding blocks in a horizontal sliding mode, and a support is fixedly connected to the base. The toggle rod linkage mechanism is driven by the cam, so that stable lifting of the upper mold is realized; during mold closing, through rapid approaching and low-speed high-pressure reinforcement, idle stroke is shortened, mold locking force is amplified, and sand shooting leakage is prevented; mold opening is slowly relieved from a dead point, and a shell mold or a mold is prevented from being damaged; the toggle rod is mechanically self-locked after going through the dead point, the motor stops rotating, the mold is still closed, safety and stability are improved, energy consumption is reduced, and the problems that mold opening and closing of traditional equipment are prone to being stuck, and stability is poor are fundamentally solved.

The utility model belongs to the field of trunk shell stamping dies, and particularly relates to a trunk shell die-forming ejection device which comprises a stamping die body and a pressing mechanism installed on the surface of the stamping die body, the stamping die body comprises a bottom table, and the top of the bottom table is fixedly connected with a lower die. An upper mold is mounted at the top of the lower mold, and a vertical frame is fixedly connected to the surface of the bottom table; according to the utility model, deformation is recovered after the tension spring is stretched and deformed, the reset spring is recovered after the reset spring is compressed and deformed, meanwhile, the transverse plate is pushed to move upwards, the vertical plate is driven to move upwards through the movement of the transverse plate, the pushing plate is driven to move through the movement of the vertical plate, and the ejection block extends into the open slot to eject the molded mold; the problem that the stamping effect is affected due to the fact that the stamped luggage case shell is usually placed in a bottom forming die and is difficult to take out from the bottom forming die under the stamping force is solved.

This utility model relates to a 3C electronic product shell molding mold applied in the field of mold manufacturing technology. It realizes the process of placing the electronic product component on a pressure plate within a tray, then using a controller to activate a hydraulic cylinder to drive the upper mold to stamp the electronic product component. After stamping, an electric push rod is activated to push the pressure plate upwards. A removable protective sleeve is fitted onto the surface of the pressure plate. As the pressure plate moves upwards, rollers on the sidewall of the protective sleeve roll synchronously upwards within a groove, reducing friction with the inner wall of the lower mold. When the pressure plate pushes the formed product shell outside the lower mold, a servo motor drives a rotating shaft to rotate a robotic arm and an electric gripper. The electric gripper is rotated to a position above the product shell, and then automatically clamps and removes the product shell. The rotating shaft is then driven to reset the robotic arm and electric gripper to fit against the sidewall of the worktable, avoiding interference with the upper mold operation.

This application relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to a high-strength carbon fiber shell molding process for UAV fuselages. The high-strength carbon fiber shell molding process for UAV fuselages includes the following steps: material preparation → cutting → coating with epoxy foam material → bonding → mold closing → hot pressing → demolding → finishing → finished product. The material preparation involves preparing carbon fiber cloth with the same carbon fiber direction. The bonding process involves bonding n layers of carbon fiber cloth coated with epoxy foam material on one side to m layers of carbon fiber cloth, respectively. The fiber direction angles of any two adjacent bonded layers of carbon fiber cloth are different, where n is 3-6 and m is 8-15 degrees. The high-strength carbon fiber shell molding process proposed in this application, through simple process steps and optimized material combinations, can produce high-strength carbon fiber shells with excellent appearance quality, meeting the strength and appearance quality requirements of UAV fuselages, and has low cost and high production efficiency.

The invention relates to the technical field of machine tool machining control, in particular to a soft package lithium battery aluminum plastic film shell forming machining detection method and device, and the method comprises the steps: obtaining soft package lithium battery application scene performance requirements, extracting experimental data from a historical sample data set, and constructing an analog simulation space; environment configuration is determined by fitting the parameter relation, and aluminum plastic shell parameter difference is analyzed to determine target configuration; and inputting the configuration data into a simulation space to obtain a target aluminum plastic shell parameter detection result, thereby solving the technical problem that the aluminum plastic film shell molding processing detection can only evaluate the product performance under known conditions and is difficult to effectively predict and cope with the performance under new application scenes or extreme conditions. Effective virtual verification of the aluminum-plastic film shell forming machining process is achieved, the real performance of the aluminum-plastic film shell under different working conditions and application environments is comprehensively reflected, and the technical effects of accurately and efficiently predicting the aluminum-plastic film shell forming machining quality are achieved.

The utility model discloses plastic shell forming equipment with an automatic trimming function, which comprises a mold, an injection molding channel is arranged on one side surface of the mold, one end of the injection molding channel is shrunk to form an injection molding hole communicated with an upper mold cavity of the mold, an injection molding pipe is mounted on the outer side surface of the mold, and the bent part of the injection molding pipe protrudes to form a thickened part. A shaft hole communicated with the injection molding channel is formed in the center of the thickening part, a push rod is arranged in the shaft hole, a polishing head is installed at one end of the push rod, and the other end of the push rod extends to the outside and is provided with a driving mechanism for driving the push rod to axially move and rotate. The injection molding device is simple in structure, residual solution in an injection molding hole can be pushed into a mold cavity, a large protruding part is prevented from being formed, the push rod can rotate, the polishing head is driven by the rotation of the push rod, the part adhered to a product can be torn through the rotated polishing head, the redundant part can be polished, and the production efficiency is improved.

The present invention provides a multi-sequence UD molding method for wind turbine blades, comprising the following steps: S1, UD mold preparation: cleaning the UD mold surface and applying a release agent to the inner surface of the UD mold; S2, sequentially laying a first continuous felt and a first release cloth on the UD mold; S3, laying a first sequence UD cloth layer; S4, preparing a silicone mold; S5, laying a second sequence UD cloth layer; S6, connecting the silicone mold to the first sequence UD cloth layer and the second sequence UD cloth layer; S7, establishing vacuum, maintaining pressure, and performing pouring and curing. The present invention, by using a silicone mold and positioning the silicone mold after laying a first sequence UD cloth layer, can achieve one-time pouring molding of multi-sequence UD, and the side edges between the first sequence UD and the second sequence UD are smoother, thereby improving the matching of the multi-sequence UD and the shell core material molding, and improving the shell molding efficiency and quality.

The present invention relates to the field of precision casting technology, and in particular to a medium-temperature wax silica sol investment casting process. The process includes the preparation of a wax mold: fixing the formed wax mold on a gate rod; molding of a shell: selecting a gate rod to be fixed in a rotary shell making machine, and subjecting the shell to coating, sanding and drying treatments on the rotary shell making machine, and circulating this sequence 4-6 times to obtain a preliminary shell; demolding of the shell: placing the preliminary shell in a sealed container for steaming and dewaxing, and then depressurizing and changing water for secondary dewaxing; roasting of the shell: placing the preheated shell in a roasting furnace, gradually heating it to 900-1100°C and maintaining it for 40-50 minutes to obtain a molded shell; molding of castings: injecting molten metal into the molded shell, and then cooling and shelling it to obtain a finished workpiece. The present invention provides a rotary shell making machine, which realizes automatic shelling in the shell molding stage, reduces the cost of manual participation, and realizes single-person operation; combined with the molding shell characteristics of the rotary shell making machine, performs secondary dewaxing to ensure that the wax mold is cleanly separated.

The present invention provides a multi-sequence UD molding method for a wind turbine blade, comprising the following steps: S1, preparing a UD mold: cleaning a surface of the UD mold, and applying a mold release agent to an inner surface of the UD mold; S2, sequentially laying a first continuous mat and a first release fabric on the UD mold; S3, laying a first sequence of UD plies; S4, preparing a silicone mold; S5, laying a second sequence of UD plies; S6, connecting the silicone mold to the first sequence of UD plies and the second sequence of UD plies; and S7, applying and holding a vacuum, and resin infusion and curing. In the present invention, using a silicone mold and then positioning the silicone mold after laying a first sequence of UD plies allows for a multi-sequence UD layup to be molded in a single resin infusion, and for better aligned side edges between a first sequence of UD plies and a second sequence of UD plies, thereby improving the fit between multi-sequence UD layup and shell / core materials during molding, and improving shell molding efficiency and quality.

The utility model discloses a differential shell modeling mould for a sand mixer, which comprises a base and a frame fixedly connected to the top of the base, an upper mould mechanism is mounted on the frame, a lower mould body is mounted on the base and corresponds to the upper mould mechanism, and an ejection component is mounted at the bottom of the base and corresponds to the lower mould body. The upper die mechanism comprises an electric cylinder fixedly connected to the rack, the output end of the electric cylinder is fixedly connected with an upper die body, and clamping positioning assemblies are installed on the two sides of the upper die body. According to the utility model, through the arrangement of the clamping and positioning assembly, stable die assembly of the clamping and positioning assembly and the lower die body can be realized when the upper die body and the lower die body are assembled, so that the production quality of the differential shell is ensured, and meanwhile, through the liftable ejection plate, the differential shell can be conveniently ejected out after the production of the differential shell is finished, and the production efficiency is improved. Therefore, the production efficiency of the differential shell is improved.

According to the wax mold for medical half support forming, one side of a wax mold body structure is connected with a boss through a necking section, the mold comprises an upper mold body and a lower mold body, and the lower mold body is provided with a first through hole, a plurality of second through holes and a driving structure; a lifting plate; the jacking mechanism is used for driving the lifting plate to lift; the support and the ejector pins are fixedly arranged on the lifting plate; the movable mold comprises two swing arms hinged through a hinge shaft, the support supports the hinge shaft in the vertical direction, one end of each swing arm is a movable module, and the other end of each swing arm is a driving block; when the lifting plate is located at the first position, the two movable modules are closed to form an auxiliary cavity which is in sealed connection with the first through hole, and the upper mold and the lower mold form a main cavity after being in butt joint with the end of the ejector pin. And in the ascending process of the lifting plate, the ejector pin jacks up the body structure, the movable molds synchronously ascend until the driving block and the driving structure act, and when the lifting plate is located at the second position, the two movable mold blocks are located at the positions of avoiding the bosses, so that the forming precision of the wax mold is improved, and the labor intensity is reduced.

This invention relates to a one-piece molding die and its preparation method for a composite material corrugated sandwich cylindrical pressure shell, belonging to the field of composite material pressure shell molding technology. The process employs continuous fiber winding or prepreg placement. During preparation, the inner panel molding die is mounted on a winding machine, the core molding die is fixed to the inner panel molding die with screws, and the outer panel molding die is fastened to the outermost side of the core molding die with external clamps. Finally, the three molds are combined into a single unit and co-cured in an autoclave to produce a composite material corrugated sandwich cylindrical pressure shell suitable for various load conditions. This composite material corrugated sandwich cylindrical pressure shell is manufactured in one piece with continuous fibers in both the circumferential and axial directions, exhibiting good thickness consistency. Compared to other similar preparation methods, this invention is simple and fast to operate, and can rationally allocate material properties according to load conditions, truly achieving the goal of reducing structural weight and increasing effective load.

The utility model relates to the technical field of gearbox production tools, and discloses a gearbox shell mold convenient to install and fix, which comprises a mold main body, the mold main body comprises a forming mold core, and a pressing mold is arranged at the upper end of the forming mold core in a combined manner. Mounting bases are fixedly connected to the upper portions of the outer walls of the rear ends of the pressing die and the forming die core, three mounting holes are formed between the upper side wall and the lower side wall of each mounting base at equal intervals, a positioning base mechanism is arranged at the bottom of the forming die core, and a die base is arranged on the outer side of the positioning base mechanism; and the positioning seat mechanism comprises fixing frames which are symmetrically and fixedly connected to the two ends of the outer side wall of the bottom of the forming mold core. According to the utility model, the layered double-injection structure design is adopted, the two injection ports are arranged in the molding groove of the mold main body in an up-down layered manner, and the injection pipelines matched with the injection ports are arranged, so that a gearbox shell molding material can be quickly and efficiently injected into the molding groove of the mold main body, and cooling molding work can be carried out in the mold main body.

The utility model relates to a PCIE (Peripheral Component Interconnect Express) slot shell forming die, which comprises a male die and a female die, a pair of opposite surfaces of the male die and the female die are provided with cavities, two ends of a groove are provided with connecting block components, each connecting block component comprises a first connecting block connected to the male die and a second connecting block connected to the female die, and the first connecting block and the second connecting block are connected with the male die and the female die respectively. The two first connecting blocks are respectively provided with a glue inlet and a glue outlet, an upper needle plate and a lower needle plate are arranged in the male die, one end, close to the female die, of each needle plate is provided with a plurality of PINs, a tongue plate is arranged in the female die, the upper side and the lower side of the tongue plate are provided with fixing plates, the front end of the tongue plate extends between the two needle plates, and the front end of the tongue plate is provided with a glue outlet. The upper side and the lower side of the tongue plate are each provided with a plurality of PIN limiting grooves, and the faces, right facing the PINs, of the two fixing plates are each provided with a plurality of pin end limiting grooves. The PINs and the pin end limiting grooves are used for limiting and supporting the PINs, so that the PINs can be prevented from being bent in the glue feeding process, and the injection molding quality is ensured.

The invention discloses a process for casting grinding balls through horizontal stack box precoated sand shell molds, and relates to the technical field of precoated sand shell mold casting. According to the process, precoated sand shell molds are stacked layer by layer to achieve horizontal pouring, scrap steel, ferrochrome, ferromanganese and a carburant are added into a smelting furnace according to the proportion and smelted to the temperature larger than or equal to 1520 DEG C, 0.4-0.7 Kg of aluminum ingots are added for deoxidation two minutes before discharging after detection is qualified, and the aluminum ingots are added into the smelting furnace to be smelted to the temperature larger than or equal to 1520 DEG C; after slagging-off of the transfer ladle, pouring at 1420-1520 DEG C; by optimizing the shell mold arrangement, the raw material ratio and key process parameters, the product yield is increased to 73.8%-74.2%, the error rate is reduced to 0.18%-0.2%, the mechanical property and the production efficiency are remarkably improved, the process is stable, the application range is wide, and the method is suitable for batch production of various wear-resistant grinding balls.

The utility model relates to the technical field of shell forming, and discloses Hall sensor shell forming equipment which comprises a bottom plate, a vertical rod is fixedly installed at the top of the bottom plate, a top plate is fixedly installed at the top of the vertical rod, a lower forming die is fixedly installed at the top of the top plate, and an upper forming die is hinged to the top of the lower forming die. A pouring nozzle and an air nozzle are embedded in the surface of the upper forming mold, the side face of the lower forming mold is detachably connected with the side face of the upper forming mold through a lock, and a sensor shell is formed between the lower forming mold and the upper forming mold in a pouring mode. According to the Hall sensor shell forming equipment, the air cylinder drives the push plate to move upwards, the push plate drives the push rod to move upwards, the push rod drives the circular plate to push upwards, and the circular plate can push a sensor shell upwards to leave a shell groove of the forming lower mold, so that rapid demolding of a plastic shell is achieved, and the production efficiency is improved.

An investment shell making machine comprises a sticky slurry shell making device, the sticky slurry shell making device comprises a lifting device and a clamping device, and the clamping device is installed on a lifting frame body of the lifting device; the slurry sticking and shell making device further comprises a frame body and a transmission device, the transmission device comprises a sliding plate, a transmission rack, a transmission gear, two linear guide rails and two sliding block sets, the transmission rack and the transmission gear are meshed, the transmission rack is installed in the frame body in the length direction of the frame body, and the two linear guide rails are installed in the frame body in the length direction of the frame body. The two linear guide rails are arranged on the two sides of the transmission rack respectively, the two linear guide rails and the two sliding block sets are in one-to-one sliding fit, the two sliding block sets are jointly installed on the sliding plate, the transmission motor is installed on the sliding plate, the transmission gear is installed on an output shaft of the transmission motor, and the lifting frame body is installed on the sliding plate. Compared with the prior art, the clamping device is not suspended on the frame body any more, but is supported by the two fulcrums, so that the rigidity of the clamping device is increased, and the structural stability of the clamping device is ensured.

The invention discloses a sand core and pouring system for casting shell forming, and relates to the technical field of casting, the sand core and pouring system comprises two sand core structures, and each sand core structure is provided with two shell molds; after the first sand core is inserted into the second sand core, at least three sand core positioning structures are formed, and the sand core positioning structures are used for fixing the relative position between the first sand core and the second sand core. According to the scheme that the sand cores are arranged side by side, sand core positioning points are increased, and the sand cores cannot rotate. The core assembly perpendicularity is improved, and the over-assembly condition is not prone to occurring; the casting assembly, the two groups of sand core structures and the four shell molds are matched, so that the four shell molds can be synchronously cast, and the working efficiency is improved; through the arrangement of the channels of the casting assembly, flow distribution is adjusted by changing the sectional area and the position of the flow channel, the interiors of the four shell molds can be evenly cast, sand washing is avoided, and the product quality is improved.

The invention belongs to the technical field of casting equipment, and particularly relates to precoated sand shell forming equipment for gearbox shell casting, which comprises a supporting assembly, a first mold assembly is fixed in the middle of the supporting assembly, and second mold assemblies arranged on the two sides of the first mold assembly are slidably connected to the supporting assembly. The output end of a fourth air cylinder arranged on the supporting assembly is connected with the second mold assemblies, a sand shooting assembly is arranged on the side face of the supporting assembly, the second mold assemblies are controlled to slide on the supporting assembly through the fourth air cylinder, the two second mold assemblies are driven to be subjected to mold closing with the two sides of the first mold assembly correspondingly, and two cavities are formed; precoated sand is sprayed into the two cavities at the same time through the sand spraying assembly, after the precoated sand is heated and cured, a precoated sand shell corresponding to the upper gearbox shell and a precoated sand shell corresponding to the lower gearbox shell are formed correspondingly, the two sand shells are manufactured in a sand spraying mode at the same time, the sand spraying time and speed are synchronous, and the thickness consistency of the two sand shells is high; and the upper sand shell and the lower sand shell are highly matched after being combined.