755results about "Foundry moulding apparatus" patented technology

The invention relates to the technical field of investment casting, and particularly provides an investment casting automatic wax pattern welding equipment control method which comprises the following steps: extracting a peak value and duration from heating curve data, and judging a uniformity numerical value of interface temperature distribution through a numerical simulation method; according to the fusion depth change trend and the interface temperature distribution data, the quantized value of the quality index is calculated, and an evaluation result of the welding effect is obtained; if the quality index quantized value is lower than a preset threshold value, historical test data are extracted from a data analysis module, and the adjustment range of the process variable is determined; according to the process variable adjustment range, optimizing the parameter combination of the heating curve and the pressure curve, and generating new control strategy data through an iterative algorithm; new control strategy data is adopted to drive equipment to operate, and dynamic feedback values of the interface temperature and the fusion depth are obtained through a real-time monitoring system; and extracting abnormal fluctuation data from the dynamic feedback value, and judging the influence degree of the solidification rate change on the quality index in combination with a data analysis result.

The present invention relates to a wax mold forming method for a multi-joint turbine guide vane, comprising the following steps: S1, splitting the multi-joint turbine guide vane into two sets of structures, one set is a blade group, and the other set is an edge plate group; S2, the two sets of structures are respectively pressed by corresponding molds, mold A presses the blade group, and mold B presses the edge plate group; S3, welding is performed by welding tooling; S3-1, the blades pressed by mold A are placed on the bottom plate in sequence; S3-2, the edge plate pressed by mold B is placed on the upper part of the bottom plate, and the outer positioning block of the welding tooling is against the edge plate located at the upper part of the workpiece; the inner positioning device of the welding tooling is against the edge plate located at the lower part of the workpiece; S3-3, tightening the second screw on the cover plate, and the cover plate presses the blade; S3-4, connecting each welding seam by an electric soldering iron. The present invention splits the multi-joint blade into a plurality of blades and edge plate structures for welding, and develops products with qualified size and high surface quality at low cost and high efficiency.

The utility model discloses an automatic printing platform replacing device of a gold wax pattern printer, and relates to the field of printing platform equipment, the automatic printing platform replacing device comprises a base, a mounting frame fixedly arranged at the top of the base and a printing nozzle movably arranged at the inner top end of the mounting frame, and a placing assembly is arranged at the inner bottom of the mounting frame. Through the arrangement of the two placing assemblies, a gold wax mold can be placed through the two placing plates, after printing of the wax mold on one placing plate is completed, the wax mold is moved out of the printer, and meanwhile the other placing plate is driven to abut against the interior of the printer; and the problem that after gold wax film printing is completed, all the wax films need to be taken down from the printing platform, and then the next cycle can be conducted is solved, and therefore the printing work efficiency is improved.

The invention relates to the technical field of casting molds, in particular to a wax mold forming mold of an air bag lower support and a mold drawing method.The wax mold forming mold comprises an upper mold, a lower mold, a front mold, a rear mold and a right mold, a first boss is arranged on a forming part of the lower mold, the front mold, the rear mold and the right mold are located between the upper mold and the lower mold, and an inner movable block is located between the right mold and the front mold and the rear mold; the inner movable blocks comprise a first inner movable block, a second inner movable block and a third inner movable block, the first inner movable block penetrates through the upper die to be connected with the lower die in an inserted mode, one end of the second inner movable block is connected with the first inner movable block in a clamped mode, the other end of the second inner movable block abuts against the third inner movable block, and a supporting foot is arranged at the other end of the third inner movable block. And a plurality of side walls of the supporting legs are respectively propped against the lower mold, the rear mold and the first boss. The mold is optimally designed, one-time forming of the complex air bag lower support wax mold is achieved, and the applicability and flexibility of the mold to preparation of wax molds of different structures are guaranteed.

The utility model relates to the technical field of wax molds, in particular to a mold for manufacturing a complex thin-wall pump body casting wax mold, which comprises a water-soluble core mold, an accessory mold and a pump body main body mold, the water-soluble core mold consists of a water-soluble core mold upper mold, a water-soluble core mold lower mold and a wax injection mouth mold, a first fixing structure is arranged on the water-soluble core mold lower mold, and a second fixing structure is arranged on the water-soluble core mold lower mold. The accessory mold is composed of an accessory mold upper mold and an accessory mold lower mold, a first wax injection opening, a second fixing structure and an accessory wax mold structure are installed on the accessory mold lower mold, and the pump body main body mold is composed of a pump body main body mold upper mold and a pump body main body mold lower mold. A second wax injection opening and a third fixing structure which are positioned at the parting surface are mounted on the lower mold of the pump body main body mold; a plurality of wax molds are adopted to produce different structures, so that the pump body wax mold with stable performance and perfect structure is produced, and meanwhile, a water-soluble core built-in sliding block is adopted to ensure that a complex cavity or channel is formed in a product, so that the processing efficiency is improved.

The invention relates to the technical field of casting molds, in particular to a high-precision wax mold forming mold for a complex-structure casting, which comprises a first outer mold, a second outer mold, a bottom mold and a top mold, a first inner module and a second inner module are arranged in the first cavity; the parting surface of the second outer mold and the first outer mold is arranged along the side part of the outer arc surface of the lower bracket of the air bag; the bottom die is connected with the first outer die and the second outer die in a clamped mode, a first through hole is formed in the bottom die, a first inserting rod is inserted into the first through hole, and the first inserting rod penetrates through the bottom die to be connected with first blind holes in the bottoms of the first inner die block and the second inner die block in an inserted mode. And the top die is matched with the end parts of the first inner die block, the second inner die block and the second outer die. Through reasonable design of the wax mold structure, one-time integral forming of the air bag lower support of a complex structure is achieved, meanwhile, smooth demolding of a wax mold is guaranteed, and the wax mold forming efficiency and quality are improved.

The utility model relates to the technical field of wax molds, in particular to a wax mold for an automobile bumper mounting seat, which comprises an upper mold and a lower mold, the upper mold comprises a first upper mold and a second upper mold, the lower mold comprises a first lower mold and a second lower mold, and the mold closing parting surfaces of the upper mold and the lower mold are Z-shaped. The mold closing surface of the upper mold II and the lower mold II is an inclined surface which is not perpendicular to the mold opening direction of the upper mold, a movable block I embedded with the upper mold II and a movable block II embedded with the lower mold II are respectively arranged on two sides of the inclined surface, and a movable block III is embedded with a connecting inclined surface of the lower mold I and the lower mold II; and the lower mold I is provided with a wax injection hole. The wax mould is manufactured in a combined mode, and the loose piece can be taken out along with a workpiece wax mould, so that high-quality manufacturing of the wax mould of a complex thin workpiece such as an automobile bumper mounting seat is realized, and subsequent procedures are reduced.

The invention relates to the technical field of wax dipping equipment, and provides wax film wax dipping equipment which comprises a wax dipping furnace, a first mounting frame, a second mounting frame, a first ultrasonic sensor, a first pneumatic valve, a wax supplementing furnace, a clamping part, a controller, a lifting module and a rotating module, the lifting module is mounted at one end, close to the wax dipping furnace, of the first mounting frame, the rotating module is connected with a liftable part of the lifting module, and the clamping part is connected with a rotatable part of the rotating module; the rotating module is used for rotating a product to be waxed, the clamping part is used for clamping the product to be waxed, when the waxing operation is executed, the lifting module moves downwards to enable the product at the clamping part connected with the rotating module to be soaked in wax liquid of the waxing furnace, and the lifting module moves upwards to enable the product at the clamping part to be separated from the wax liquid and then drives the product to be waxed. And the rotating module is used for enabling the product at the clamping part to rotate clockwise or anticlockwise around the axis.

The invention provides a water-soluble core mold material based on direct-writing forming photocuring 3D printing and a preparation method of the water-soluble core mold material. The preparation method comprises the following steps: mixing polyvinylpyrrolidone and absolute ethyl alcohol to prepare a water-soluble adhesive; fully mixing a photocuring monomer hydroxyethyl methylacrylate with a photoinitiator TPO (Thermoplastic Polyolefin) to prepare water-soluble photocuring resin; mixing the two materials, stirring with a high-speed stirrer, sequentially adding heavy calcium carbonate powder, glass beads, white carbon black and glass fiber powder in the stirring process, and fully stirring to obtain slurry; and the slurry is printed through a printer, a core mold primary blank is obtained, and the final core mold material is obtained through secondary curing. According to the water-soluble core mold material based on direct-writing forming photocuring 3D printing and the preparation method of the water-soluble core mold material, the technical problems that a traditional metal mold is difficult to design, high in manufacturing cost and low in demolding efficiency are solved, and the water-soluble core mold material which is good in rheological property, low in cost and easy to demold can be prepared.

The invention relates to the technical field of precision casting, and discloses a wax pattern module combination device and a combination method thereof.The wax pattern module combination device comprises a rack and further comprises idler wheels arranged on the rack and used for assisting the rack in moving; the lifting mechanism comprises a working platform which is fixedly arranged on a sliding plate and is used for placing a lower die; the rotating mechanism is assembled on the machine frame, and a gear transmission set included in the rotating mechanism is connected with a connecting piece used for being connected with an upper die; the lifting mechanism and the rotating mechanism are matched with each other, so that the wax mold can be accurately lifted and adjusted and can rotate by 360 degrees, and manual mold turning is not needed. The machine frame is further provided with a purification mechanism capable of discharging wax smoke generated when the wax mold is assembled, the purification mechanism is matched with an air inlet mechanism arranged on the machine frame to conduct air injection on the wax mold so that the temperature of the wax mold can be maintained at a normal value, shrinkage of the wax mold can be controlled, and meanwhile the effect of maintaining balance of internal pressure and external pressure of a workshop is achieved.

The invention discloses a full-automatic cleaning device for a wax pattern module and a cleaning method of the full-automatic cleaning device, and belongs to the field of cleaning. The full-automatic cleaning device for the wax pattern module comprises a machine cabinet, a cleaning unit, a soaking and sucking unit and a purging unit are sequentially arranged at the bottom of the machine cabinet in a linear mode, and the full-automatic cleaning device further comprises a migration assembly arranged on the inner top of the machine cabinet, and the migration assembly conducts transverse displacement; the grabbing and clamping mechanism is connected to the transferring assembly through a lifting part, and the grabbing and clamping mechanism grabs the wax pattern module to move and grab the wax pattern module and moves the wax pattern module to the cleaning unit, the rinsing unit and the purging unit to be cleaned, rinsed and purged in sequence; the grabbing unit of the transferring assembly is provided with the mechanical claw, the mechanical claw accurately grabs the wax pattern module, after the grabbing unit stably clamps the wax pattern module, the transferring assembly controls the mechanical claw to move the module to the cleaning assembly, the cleaning units are arranged in the cleaning assembly, and the transferring assembly can sequentially move the wax pattern module to all the cleaning units to conduct step-by-step cleaning.

The utility model belongs to the field of wax injection machines, particularly relates to a wax-cylinder-free double-station die head hydraulic wax injection machine, and aims to solve the problems that in the existing machining process, manual unloading is usually adopted, the machining efficiency is low, and the labor intensity of workers is increased if the workers are required to rapidly unload the materials, the following scheme is provided: the wax-cylinder-free double-station die head hydraulic wax injection machine comprises a base, a workbench is fixedly arranged on the surface of the base, a mounting frame is fixedly arranged on the surface of the workbench, a control box and a hydraulic cylinder are fixedly arranged on the surface of the mounting frame, one end of a hydraulic rod of the hydraulic cylinder penetrates through the mounting frame and is fixedly provided with a lifting plate, an upper mold is fixedly arranged at the bottom of the lifting plate, and an injection nozzle is arranged on the outer wall of one side of the upper mold. A material guide groove is formed in one side of the workbench; according to the automatic discharging device, discharging can be automatically completed, the energy of people is saved, discharging is rapid and stable, and the machining efficiency is improved.

The invention discloses an evanescent mode mold air plug and a ventilation structure and a preparation method thereof. The evanescent mode mold air plug comprises a plug body, an aluminum sheet and a stainless steel net. The aluminum sheet is arranged on the end face of one end of the plug body, and a plurality of small round holes are evenly distributed in the aluminum sheet. The stainless steel mesh covers the end face of the other end of the plug body. Compressed air and steam can smoothly pass through the mold, cooling water is prevented from permeating into the mold, the water content of the mold is reduced by 3%-5%, the drying and curing time is shortened, the energy-saving effect is achieved, and the production efficiency is improved.

The invention discloses an evanescent mode casting positioning device capable of controlling the size A. The evanescent mode casting positioning device comprises a mounting seat, the top of the mounting seat is provided with an adaptive mechanism for assisting mounting, and the mounting seat is internally provided with a positioning mechanism for positioning the die body; through cooperative arrangement of the adaptation mechanism, the positioning mechanism and the inner clamping mechanism, positioning is not limited by the density of foam any more, clamping jaws on the two sides of the A-size tool are opened to make contact with a white mold, negative pressure is generated through a vacuum pump, the white mold is adsorbed to the clamping jaws, then the A-size white mold is pulled back to a standard position, and positioning is achieved. The device is more accurate and stable, operation is more convenient, time is saved, according to cooperation between the adaptation mechanism and the positioning mechanism, positioning work of the placed white mold can be achieved, the inner clamping mechanism can clamp the white mold inwards from the inner side wall, the white mold can be driven to be pulled back to the preset position in a pneumatic negative pressure adsorption mode, and the labor intensity of workers is lowered. Therefore, the accuracy is ensured.

The utility model particularly relates to a foam production device for lost foam, which comprises a heating device and a screening device, the heating device comprises a heating kettle, the heating kettle is of a double-layer structure, a heating wire is wound in an interlayer of the heating kettle, the top of the heating kettle is provided with a feeding hopper and a stirring device, and the bottom of the heating kettle is provided with a vertically arranged material pipe. A waste screening device is arranged on the material pipe and comprises a first fan, an air outlet of the first fan is communicated with one side of the material pipe, a screening barrel is arranged at the bottom of the material pipe, the top of the screening barrel is of an opening structure, a first filter screen is arranged in the screening barrel, and a vibration motor is installed in the center of the bottom of the screening barrel. A plurality of buffer springs are distributed on the circumference of the bottom of the screening barrel, the bottoms of the buffer springs are connected with a base, the side portion of the screening barrel is connected with a first discharging pipe and a second discharging pipe, and the other side of the discharging pipe is connected with a qualified material screening device.

The invention relates to the technical field of yttrium sol preparation, in particular to yttrium sol and a preparation method and application thereof. The preparation method of the yttrium sol provided by the invention comprises the following steps: adding yttrium salt into water, stirring and dissolving to obtain a solution A, and then adding glacial acetic acid into the solution A, stirring and dissolving to obtain a solution B; ethylene glycol is added into the solution B for a reaction, and yttrium sol is obtained; wherein the mass ratio of the yttrium salt to the glacial acetic acid to the ethylene glycol is (7-9): 1: 1. According to the invention, glacial acetic acid is used as a chelating agent and is matched with ethylene glycol to prepare the yttrium sol, so that the solid content and the stability of the yttrium sol can be improved.

The invention discloses high-performance precision casting wax and a preparation method thereof. The casting wax is prepared from the following raw materials in parts by mass: 20 to 40 parts of paraffin, 0 to 20 parts of lignite wax, 0 to 20 parts of beewax, 0 to 10 parts of polyethylene wax, 5 to 10 parts of stearic acid, 20 to 40 parts of C5 petroleum resin, 10 to 20 parts of C9 petroleum resin, 10 to 20 parts of hydrogenated C9 petroleum resin, 0 to 10 parts of hydrogenated terpene resin, 0 to 40 parts of mannitol, 0 to 14 parts of polymethyl methacrylate, 0 to 5 parts of corn starch and 0 to 5 parts of cellulose acetate. The core innovation point of the invention is as follows: through the synergistic effect of the hydrogenated resin and the high-molecular polymer and in combination with the filling powder in a specific proportion, the thermal expansion coefficient (the shrinkage rate is less than or equal to 0.6%) and the ash content (less than or equal to 0.02%) of the wax material are remarkably reduced, and meanwhile, the bending strength (7-10MPa) and the surface hardness (46-55HD) are improved. The wax material is suitable for precision casting of thick, large and complex castings, solves the problems that the existing wax material is easy to deform, high in shrinkage rate and poor in thermal stability, and has high surface smoothness and dimensional precision.

The invention relates to the technical field of precision investment casting, in particular to an optical lens motor base precision forming die which comprises a fixing plate, a forming mechanism is arranged at the top of the fixing plate, and an upper die plate is arranged at the top of the forming mechanism; the forming mechanism comprises a butt joint unit arranged in the center of the top of the fixing plate, the butt joint unit comprises a main body fixedly connected with the fixing plate, a first ejector block is slidably connected to the position, close to the bottom, in the main body, and lifting blocks are arranged at the positions, located on the periphery of the first ejector block, in the main body; a butt joint rod is slidably connected to the center position in the first ejector block, and a pressing block is slidably connected to the position, below the butt joint rod, in the main body. Through linkage of the module assembly and the butt joint unit, the problems of wax mold demolding deformation cracking and parting surface steps are solved, and the integrity of the wax mold is guaranteed; by means of linkage of the cutter and the exhaust groove, residual wax is automatically cleaned, manual operation is not needed, shrinkage porosity is avoided, and the structural stability of the base is guaranteed.

The invention discloses a wax mould welding device and method for a radial flow supercharger impeller, which are suitable for welding wax moulds of impellers of the same model, different models and various specifications, reduce the mould input cost and improve the consistency of products. Comprising a blade installing and welding device and a lower ring installing and welding device, and the blade installing and welding device achieves welding of blade wax molds (32) of an upper ring wax mold (31); and the lower ring assembling and welding device is used for welding wax pieces of an upper ring wax mold (16) with a blade and a lower ring wax mold (33).

The utility model relates to the technical field of false tooth manufacturing equipment, and provides a false tooth processing wax melter which comprises a shell, a wax melting groove, a C-shaped clamp spring and a heating device, the wax melting groove is embedded in the shell, and the heating device is arranged at the bottom of the wax melting groove; the part, close to the groove opening, of the wax melting groove is bent outwards to form a bent part, and the lower part of the bent part abuts against the upper surface of the shell; an annular groove is formed in the outer side wall of the wax melting groove in the circumferential direction, the annular groove is close to the bent part, the C-shaped clamping spring is clamped in the annular groove, and the top of the C-shaped clamping spring abuts against the upper surface of the shell. The part, close to the notch, of the wax melting groove is bent outwards, and then the wax melting groove and the shell are clamped together through the C-shaped clamping spring, so that the wax melting groove is prevented from falling out of the shell when the wax melter is placed upside down.

The invention discloses special model wax for a high-temperature alloy and a preparation method of the special model wax. The special model wax comprises the following raw material components in parts by weight: 15-45 parts of paraffin, 5-25 parts of a crystallization accelerant, 20-50 parts of tackifying resin, 1-5 parts of an auxiliary stabilizer, 1-3 parts of a flame retardant, 5-8 parts of filler and 1-3 parts of polyethylene wax micro powder. The model wax is prepared by mixing the raw material components. The filler is selected from at least one of ultra-high molecular weight polypropylene, nylon, polyurethane, high molecular polystyrene, graphene oxide, fluorinated graphene oxide and flexible phosphate modified boron nitride. The prepared model wax has the advantages of being good in fluidity, high in bending strength, small in linear shrinkage rate and thermal expansion coefficient and good in size stability, the preparation technology is simple, and the cost is low, so that the model wax special for the high-temperature alloy has wide market prospects, and the requirements of the current market are met.

The invention discloses modified precision casting wax as well as a preparation method and application thereof. The modified precision casting wax is prepared from the following raw materials and components in parts by mass: 17 to 25 parts of microcrystalline wax, 10 to 15 parts of paraffin, 5 to 10 parts of stearic acid, 2 to 4 parts of ethylene-vinyl acetate, 2 to 6 parts of lignite wax, 2 to 5 parts of Piccotex75 resin, 10 to 15 parts of terpene resin, 5 to 15 parts of D-mannitol, 5 to 15 parts of adipic acid, 8 to 15 parts of rosin glyceride, 1 to 3 parts of carnauba wax, 2 to 5 parts of candelilla wax, 1 to 3 parts of hydroxyethyl cellulose and 0 to 3 parts of starch. According to the modified precision casting wax disclosed by the invention, the performance of a wax mold is improved by compounding functional aids, so that the modified precision casting wax has high bending hardness and surface hardness, lower shrinkage rate and good dimensional stability, and can be widely applied to the field of high-precision casting.

The invention discloses an automatic single crystal blade wax mold assembling process and system, and the system comprises a welding positioning turntable, and a clamping manipulator, a welding manipulator and a transfer manipulator which are sequentially arranged around the welding positioning turntable, and further comprises a wax melting barrel, a wax dipping device and a first tool replacement station, the first storage station, the second storage station and the third storage station can be used for storing a chassis wax mould, a flower disc wax mould, a blade wax mould and a middle column pipe wax mould required by N modules, and N is an integer not less than 2. The clamping manipulator is provided with a first clamping tool and a second clamping tool in a replaceable mode, the first clamping tool is used for clamping a base plate wax mold and a flower disc wax mold, the second clamping tool is used for clamping a blade wax mold, the welding manipulator is provided with a bonding wax injection assembly, and the transfer manipulator is provided with a third clamping tool used for clamping a center column pipe wax mold. According to the method, the shape quality, the strength and the batch production efficiency of the welding seam of the single crystal blade wax mold module are improved.

The utility model discloses a wax mold assembly tool, and belongs to the technical field of wax mold assembly bonding, and the wax mold assembly tool is characterized by comprising a base plate and further comprising a sprue wax mold; wherein the wax mold bonding assembly comprises a bonding seat, a moving assembly, a moving plate, a rotating shaft, an overturning plate, a cross gate wax mold, a lifting device, a supporting block, an electric heating plate and a locking assembly, the bonding seat is arranged on one side of the chassis, the moving assembly is installed on the bonding seat, the moving plate is installed on the moving assembly, the rotating shaft is installed on the moving plate, the overturning plate is installed on the rotating shaft, and the lifting device is installed on the rotating shaft. The transverse pouring gate wax molds are installed on the turnover plate, pouring gates of the transverse pouring gate wax molds face upwards, the lifting device is installed on the bonding base, the supporting block is installed on the lifting device, the electric heating plate is installed on the supporting block, and the locking assembly is installed on the turnover plate. According to the invention, the position precision is more accurate when the cross gate wax mold is adhered to the straight gate wax mold, and the precision after tree assembling is better.

The invention discloses a wax film printer temperature control method and system, a storage medium and a program product, and the method comprises the steps: judging whether a current printing task is searched or not; if yes, target historical printing parameters are extracted; a first instruction is sent to the temperature controller for operation; if not, generating a printing temperature curve; determining a target printing temperature; determining a printing path; dividing the printing platform into a plurality of printing sub-areas; determining a first sub-printing area and a second sub-printing area; a heating instruction is sent to a temperature controller of the first printing sub-area; and when the printing head is located in the first printing sub-area and the distance between the printing head and the second printing sub-area is smaller than the preset distance, a heating instruction is sent to a temperature controller of the second printing sub-area so that the temperature of the second printing sub-area can be equal to the target printing temperature. The temperature of the printer and the temperature of the printing head are controlled to be the same, so that the quality of objects printed by the wax film printer is consistent, and the yield of the wax film printer is increased.

The invention relates to a high-temperature alloy solid blade wax mold reversible deformation tool design method, belongs to the technical field of precision casting, and solves the problems that the correction precision is limited during reversible deformation of an existing blade wax mold; and a specific, simple and standardized blade wax mold reversible deformation method does not exist. The invention provides a specific, simple and standardized blade wax mold reversible deformation method, which comprises the following steps: firstly, analyzing according to a cross section to obtain a blade body size deformation rule, then designing a blade wax mold reversible deformation tool according to the deformation rule, and finally, carrying out reversible deformation on the blade wax mold by virtue of the tool. According to the method, the deformation difference between the air inlet and exhaust edges of the blade wax mold and the middle of the blade body is considered, cracks on the air inlet and exhaust edges of the blade wax mold are avoided, the correction precision is improved, and the purpose of effective deformation is achieved.

The present application relates to wax mold technology field, disclose a kind of large thin-walled wax mold and for wet wax precision casting production process, including fixing frame, the fixing frame is provided with electric push rod, movable mould and fixed mould, the movable mould, fixed mould is provided with heat dissipation mechanism, the movable mould is provided with stripping mechanism, the fixed mould is provided with top pressure mechanism and wax injection port, the movable mould is also provided with rotating mechanism, the rotating mechanism includes motor and locking piece.The present application can demould the workpiece, while avoiding the workpiece from being stuck in the fixed mould, thereby greatly improving the practical convenience, and after demoulding the workpiece, water-based release agent can be sprayed in the fixed mould and movable mould, thereby avoiding the need for manual spraying of water-based release agent, and the forming effect and forming quality of the workpiece can also be improved, finally the locking piece can be automatically driven to contact and lock the fixed mould, thereby greatly improving the practicality and convenience of use.

The invention discloses an automobile part investment casting low-temperature wax molding injection device, which relates to the technical field of investment casting, and comprises a heat preservation outer cylinder and a heat preservation conveying assembly. In the using process, the diaphragms are arranged at the two ends of the pump body correspondingly, through reciprocating motion of the diaphragms on the two sides, alternate conveying of liquid media in the water outlet pipe and the discharging pipe can be synchronously achieved, and the input end of the water outlet pipe is connected to the left side of a space formed by the opposite faces of an annular plate and a partition plate; the input end of the discharging pipe is connected to the side face of the bottom of the stirring inner cylinder, through the arrangement of the two-way pumping assembly, in the process that molten cerate is conveyed to a corresponding wax mold injection station from the stirring inner cylinder through the discharging pipe, hot water is synchronously and continuously injected into a hot water interlayer in an interlayer of the heat exchange jacket and the discharging pipe from the filling cavity, and the wax mold is injected into the hot water interlayer; the heat preservation layer arranged outside the heat exchange jacket can effectively slow down loss of heat of hot water, and the phenomenon that cerate in the discharging pipe is solidified due to the influence of temperature difference in the conveying process is prevented.

The invention discloses a medium-temperature wax impeller mold opening and closing system based on a linkage mechanism and a control method of the medium-temperature wax impeller mold opening and closing system. The medium-temperature wax impeller mold opening and closing system comprises a lower bottom plate and a linkage mechanism arranged on the lower bottom plate, and a mold core mechanism which is arranged on the linkage mechanism and used for preparing an impeller wax mold is folded or dispersed through the action of the linkage mechanism. The mold core mechanism comprises a plurality of mold core units which are used for forming an impeller wax mold blade which is a twisted blade surface, and the lower parts of the mold core units are in arc-shaped transition connection and integrally form a main shaft; during mold closing, the mold core mechanism is sleeved with a cooling limiting sleeve piece used for limiting and cooling the mold core mechanism, an upper cover is arranged at the top of the mold core mechanism in a matched mode, a top cover is arranged above the upper cover in a matched mode, and a wax injection hole is formed in the lower bottom plate and the linkage mechanism in a matched mode; through efficient transmission of the linkage mechanism, precise forming of the mold core unit and integrated design of the cooling system, the impeller forming precision is high, the cooling efficiency is high, maintenance is convenient, and the device is particularly suitable for medium-temperature wax precise casting scenes.

The invention belongs to the technical field of 3D printing, and discloses an ink supply device, an ink supply method and a 3D printer. The ink supply device comprises an ink box, an ink inlet pump, an ink suction pump and a spray head, the ink box comprises an ink return supply cavity, an ink inlet cavity and an ink return cavity, the ink return supply cavity is configured to be capable of supplementing ink through the supply device, the ink inlet pump is arranged between the ink return supply cavity and the ink inlet cavity in a communicating mode, and the ink suction pump is arranged between the ink return cavity and the ink return supply cavity in a communicating mode; the spray head is arranged on the ink box and comprises an ink flow channel and a nozzle communicated with the ink flow channel, the ink inlet end of the ink flow channel is communicated with the ink inlet cavity, and the ink return end of the ink flow channel is communicated with the ink return cavity. According to the ink supply device, the ink supply method and the 3D printer provided by the invention, the limit of original gas negative pressure for controlling ink circulation flow can be broken through, so that the circulation requirement of ink with high viscosity and high flow rate requirement is met, the pressure control is convenient, and the pressure fluctuation is reduced.