139results about "Mould controlling devices" patented technology

A core quality estimation system that estimates quality of a core to be formed by filling a mold with kneaded sand produced by kneading in a kneading tank and heating the kneaded sand includes a computer that executes operations of acquiring mold temperature information of the mold, acquiring environmental information regarding a surrounding environment in which the core is formed, and estimating the quality of the core based on the mold temperature information and the environmental information.

The invention relates to the technical field of 3D printing, and discloses a sand mold 3D printing full-process automatic production line and a production method.The production line comprises a sand mold printing area, an auxiliary equipment area, a dip-coating detection area, a drying area and a plurality of transfer equipment, the sand mold printing area comprises a plurality of sand mold 3D printing equipment, and each sand mold 3D printing equipment comprises a printing work box; a sand mold printed by the sand mold 3D printing equipment is contained in the printing work box. The sand mold 3D printing process can be unified, the product quality and the production efficiency can be improved, and the labor cost is reduced. According to the production line, full-automatic control is adopted, the whole production line is provided with transfer equipment for transferring sand molds, unattended operation can be achieved, the production efficiency is higher, manpower consumption is lower, the production line is provided with a visual inspection station for detecting defects of the sand molds subjected to paint dip-coating, unqualified sand molds are prevented from flowing out, and the production efficiency of the produced sand molds is greatly improved from the beginning of design to the completion of pouring. And the whole process can be traced.

The utility model relates to the technical field of tail gas collection of core making machines, in particular to a tail gas collection system for multiple core making machines, which comprises a plurality of folding screens, a plurality of pipeline groups and a main pipeline. The multiple core making machines are arranged in the multiple folding screens respectively, each pipeline set corresponds to one core making machine, each pipeline set comprises a branch pipe, a first branch pipe, a second branch pipe, a branch pipe valve, a branch pipe valve and a draught fan, one end of each first branch pipe and one end of each second branch pipe are communicated with the branch pipe, the other end of each first branch pipe is communicated with an inner cavity of the corresponding folding screen, and the other end of each second branch pipe is communicated with an inner cavity of the corresponding folding screen. The other end of the second branch pipe is communicated with the closed bottom frame of the core box, the branch pipe valve and the fan are arranged on the branch pipes, the branch pipe valve is arranged on the first branch pipe, and the branch pipes are communicated with the tail gas treatment device through the main pipeline. Each core making machine is provided with one fan, so that different requirements of different specifications of core making machines and different stages for the air draft amount can be met, air volume adjustment is achieved, the situation that only one fan is arranged to run at the maximum power all the time is avoided, and energy saving is achieved.

The invention relates to the technical field of casting, in particular to a precision casting shell making machine which comprises a hoisting part. The hoisting part comprises a driving piece and a hoisting mechanism, the hoisting mechanism is mounted on the driving piece, and the hoisting mechanism comprises a shell, a hanging basket, a sensing assembly and two hanging rods. The two hanging rods are eccentrically arranged on the shell and can rotate along with the shell. The hanging basket comprises a main rod and two hanging arms, and the main rod is connected with a fired mold; and the suspension arm is connected with a lifting hook on a corresponding suspension rod. The induction assembly is installed on the shell. According to the precision casting shell making machine, the axial relative displacement of the suspender is monitored through the induction assembly, eccentricity of a fired mold is fed back, after workpieces in the same batch are cast for multiple times, position exchange is achieved through rotation of the suspender and the shell, the suspender on the high-abrasion side and the suspension arm on the low-abrasion side can be matched again, the abrasion degree of the two sides is balanced, and the precision casting shell making machine is suitable for large-scale production. And the service life of the whole hoisting part is prolonged.

The application discloses an engine cylinder body lost foam mold modeling device and a casting method. A plurality of modeling units are arranged in the form of an annular array, and each adjacent modeling unit has a spacing a. The modeling unit comprises a lifting linear degree of freedom, a feeding linear degree of freedom and a universal linear degree of freedom, and a seismic source for modeling. For each cell i, the following steps are performed: calculating the temperature gradient of the cell i using the temperature value difference calculation in the Moore neighborhood Ni. The technology provided by the application uses a temperature sensor to monitor the temperature distribution inside the mold in real time, calculates the rate prediction value through a cellular automaton, and thus realizes accurate control of fluid flow. Based on the prediction ability of the temperature distribution, the fluid flow situation can be predicted in advance, and corresponding control can be performed to ensure the casting quality.

This invention relates to the field of casting technology for sand cores and sand shells, and particularly to a method for preparing high-precision casting sand cores and sand shell components based on a coated sand process. The method includes the following steps: rinsing quartz sand and reacting it with a sodium silicate solution to obtain coated quartz sand; adding 3-aminopropyltriethoxysilane and water to the coated quartz sand in a high-speed mixer; sequentially adding modified benzoxazine resin, calcium citrate, magnesium chloride, hyperbranched polyamide, and polycaprolactone-grafted starch to obtain finished coated sand; plasma-treated chromium-12 molybdenum-vanadium mold steel to obtain an amino-modified mold; sand-jetting the finished coated sand into left / right half-shells; shaping and pre-embedding chromite sand cores with chills to obtain left / right half-shell green blanks; milling the surfaces of the left / right half-shell green blanks, coating them with resin, butt-jointing, curing, and deburring to obtain the casting sand core and sand shell. This method solves the problems of poor mechanical strength, poor high-temperature stability, low production efficiency, and poor environmental performance in high-precision casting sand cores and sand shells.

The invention discloses an electric mold closing mechanism of a core making machine and an intelligent control method. The electric mold closing mechanism comprises a toggle rod mechanism and a flexible output mechanism, wherein the toggle rod mechanism consists of a driving unit, a connecting rod push plate, a connecting rod, a front toggle rod, a core body forming mold cavity, a rear toggle rod, a rear toggle rod seat, a front toggle rod seat and a nut. The servo motor drives the lead screw to rotate, so that a thread pair is converted into linear motion of the nut, the connecting rod push plate and the toggle rod mechanism are driven, lifting or transverse linear motion of the movable mold plate is achieved, the mold closing guide rail and the guide sleeve guide the movable mold plate to move, stable motion is ensured, shaking or deflection is avoided, and the mold closing precision and the sand core quality are improved; the balance cylinder is used for balancing the opening force of the toggle rod mechanism and the gravity of the die, reducing the burden of the servo motor, prolonging the service life of the motor and improving the dynamic response speed of the system.

To provide a core quality estimation system estimating the quality of a core at high precision while considering an influence of a circumferential environment.SOLUTION: A core quality estimation system is used for estimating the quality of a core molded by filling a mold with kneaded sand kneaded in a kneading tank and comprises: a mold temperature information acquiring part acquiring the mold temperature information of the mold; an environment information acquiring part acquiring environment information related to a circumferential environment in which the core is molded; and an estimation part estimating the quality of the core based on the mold temperature information and the environment information.SELECTED DRAWING: Figure 4

The utility model relates to a sand scraping device and sand mold 3D printing equipment. The sand scraping device comprises a supporting structure, a translation seat, a scraper and a driving mechanism. The translation base is slidably installed on the supporting structure in the linear direction. The scraper is mounted on the translation seat, and at least part of the scraper is located in the sand paving hopper. The driving mechanism is in transmission connection with the translation base and used for driving the translation base to drive the scraper to reciprocate in the linear direction. And when a certain amount of sand is stored in the sand paving hopper, the driving mechanism drives the translation seat to drive the scraper to move back and forth in the sand paving hopper, so that the sand in the sand paving hopper is scraped to be flat by utilizing scraping teeth of the scraper. Therefore, the sand scraping device is used for automatically scraping the sand in the sand paving hopper in the sand paving process, the whole sand scraping process does not need to stop working of the sand mold 3D printing equipment, a manual observation space and a manual sand scraping operation space do not need to be reserved, and the improvement of the working efficiency of the sand mold 3D printing equipment and the effective utilization rate of the equipment space is facilitated.

The invention provides a casting mold molding device and a casting mold molding method, which can reduce the driving force required for rising an extrusion table and realize large energy conservation. The present invention is a casting mold molding machine for molding a casting mold by compressing casting sand filled in a casting frame, the casting mold molding machine being provided with: a pressure application unit that comes into contact with the casting sand; an extrusion table which is provided so as to face the pressure application unit and on which a carrier plate on which the casting frame overlaps is mounted; and a pressurization driving device which is provided above the pressurization implementation unit, and which causes the pressurization implementation unit to approach the extrusion table to compress the casting sand filled in the casting frame, the extrusion table being provided with: an extrusion table raising / lowering device which raises the extrusion table from the standby position to a compression start position above the standby position; and a descending restricting device for restricting the descending of the pressing table against the pressing force during compression by the pressing driving device in the pressing table which is lifted to the compression starting position.

The utility model discloses a casting molding compaction mechanism based on pressure feedback, which comprises a frame and a working plate in bolted connection with the bottom of the frame, the top of the working plate is provided with a molding compaction die, the frame is an L-shaped frame, and the side wall of the frame is in bolted connection with a compaction driving mechanism for driving the molding compaction die to move up and down to realize mold closing compaction. The pressure feedback device is arranged, the pressure sensor is used for detecting the compaction pressure in real time, data are transmitted to the data processing unit to be analyzed and processed, the driving motor can be accurately controlled, real-time adjustment of the compaction pressure is achieved, the problem that a traditional compaction mechanism is not accurate in pressure control is solved, and the compaction efficiency is improved. And the multiple pressure sensors evenly distributed in the compaction mold can comprehensively and accurately detect the pressure, the situation that the compaction effect is not uniform is effectively avoided, and the quality stability of casting forming is improved.

The invention provides an intelligent precise control cleaning method and system for a sand mold 3D printing sand area, and belongs to the technical field of computers.The method comprises the steps that image data are obtained through a camera, and point cloud data are obtained through a 3D scanner; target detection based on deep learning is carried out on the image data, and a first cleaning position is identified; preprocessing the point cloud data to obtain a second cleaning position; fusing the first cleaning position and the second cleaning position to obtain a cleaning position set; identifying the type of a cleaning substance of the image data and the point cloud data corresponding to each cleaning position in the cleaned position set through a pre-trained classification model; based on the type of the cleaning substance, a corresponding end effector is matched for the mechanical arm, and a cleaning strategy is determined; planning a cleaning path of the mechanical arm based on the space pose of the cleaning position set, the end effector and the point cloud data; and the mechanical arm is controlled to clean the sand area based on the cleaning strategy and the cleaning path. The sand area cleaning efficiency is improved.

The utility model belongs to the field of industrial casting, particularly relates to an accurate sand adding device for a horizontal molding line, and provides the following scheme aiming at the problems that a conveying belt is unstable in feeding during feeding and molding sand is inconvenient to discharge when the feeding is excessive in the prior art: the accurate sand adding device comprises a rack and a hopper arranged at the top of the rack, a plurality of weighing sensors are fixedly mounted between the bottom of the hopper and the top of the rack, one side of the hopper is fixedly connected with a through mounting pipe, one end of the mounting pipe is communicated with the hopper, the bottom of the mounting pipe is fixedly connected with a discharging pipe for discharging raw materials, and a through driving shaft is rotationally connected between the two ends of the mounting pipe; according to the molding sand feeding device, excessive molding sand in the hopper is discharged through the feeding blades, so that the weight error of the molding sand in the hopper is reduced, the sand feeding accuracy is improved, meanwhile, the hopper can vibrate, the molding sand is prevented from staying and being attached to the interior of the hopper, and the feeding accuracy is further improved.

The utility model discloses a servo pushing and buffering device for a box molding line, which comprises a production plate and a buffering plate arranged on the upper surface of the production plate in a sliding manner, and a pushing assembly for stably pushing a sand box to move is arranged on the side surface of the production plate; the pushing assembly comprises a supporting block, a rack, a driving gear, a limiting module and a buffering module, the supporting block is fixedly arranged on the upper surface of the production plate, the driving gear is rotationally arranged on one side of the supporting block through a rotating column, and the rack is engaged with the driving gear; the motor drives the driving gear to rotate through the rotating column, and the driving gear drives the rack to move through meshing, so that the pushing speed and force are accurately controlled according to the rotating speed of the motor, the production progress and the product quality of the box molding line are improved, and meanwhile, the sand box is pushed to move through cooperation of the buffer module and the pushing plate; therefore, impact force generated when the sand box is conveyed in place is effectively absorbed, damage to the sand box and equipment is reduced, and the service life of the whole equipment is prolonged.

The invention relates to the technical field of casting mold manufacturing, in particular to a resin sand modeling film-covering foam mold with a rapid mold removing function and a manufacturing method, and the resin sand modeling film-covering foam mold comprises a mold body which is made of a foam material and used for forming a casting cavity; the film covering surface layer covers the outer surface of the mold body; the built-in demolding mechanism is arranged in the mold body; wherein the built-in demolding mechanism comprises at least two demolding driving units which can be independently controlled to act, and the demolding driving units are configured to be capable of driving local areas, corresponding to the demolding driving units, of the mold body to generate displacement or deformation which enables the local areas to be separated from peripheral resin sand casting molds under a demolding instruction; through the partition intelligent deformation demolding system and the gradient functional coating, controllable, uniform and thorough rapid demolding without damage to a casting mold can be achieved for a complex mold shape.

The casting workshop modeling automatic sand adding device comprises a sand storage tank and a sand outlet mechanism arranged on the lower side of the sand storage tank, the sand outlet mechanism comprises a sand outlet nozzle and a sand outlet hose connected with the sand outlet nozzle and the bottom of the sand storage tank, a control valve used for controlling opening and closing of the sand outlet nozzle is arranged in the sand outlet nozzle, and the sand outlet hose is connected with the sand outlet nozzle. The sand outlet nozzle is further provided with a sand nozzle moving mechanism used for controlling the sand outlet nozzle to move in all directions in the horizontal direction, a sand box positioning mechanism used for detecting an opening of a sand box is further arranged beside the sand outlet nozzle, and the sand box positioning mechanism is used for being matched with the sand nozzle moving mechanism. The sand box positioning mechanism is arranged to be matched with the sand nozzle moving mechanism, so that automatic and uniform sand injection is achieved, the automation degree is higher, sand injection is more uniform, the position of the sand injection nozzle does not need to be manually adjusted, the production efficiency is improved, and the production cost is reduced. And the labor intensity is reduced.

A full-automatic double-station bionic sand shooting molding machine and a sand shooting molding method. It relates to the technical field of foundry molding machines. Through symmetrical arrangement of upper and lower mold boxes, double independent molding stations are provided, and a double-gantry clamping and transferring device is matched, so that the core molding process and the auxiliary preparation process can be completely parallel operation, without process waiting, the whole production process has strong continuity, the production efficiency is improved by more than 100% compared with single-station equipment, the sand shooting flow channel designed by using bionic structure solves the problems of traditional sand shooting such as turbulence and dead angle, the uniformity of sand filling is greatly improved, and the qualified rate of finished products is improved from 85% of the traditional method to more than 99.5%; meanwhile, through the sand grinding sand self-protection structure, the flow channel wear is greatly reduced, and the service life of the equipment is prolonged by more than 3 times. Full-process automation, without manual intervention, 24-hour unmanned continuous production can be realized; at the same time, the sand box bottom, the sand box wall and the core can realize closed loop recycling after sorting, greatly reducing the production material cost, and adapting to the flexible production demand of modern foundry workshop.

The application provides an intelligent sand mixer system in the field of casting, which comprises a sand mixer, a feeding valve, a sand bin, a liquid material feeding device and a vibrating table. The sand bin is used for storing molding sand and feeding the molding sand to the sand mixer through the feeding valve. The sand bin is arranged above the sand mixer. The feeding valve is used for controlling the type and quantity of the molding sand. The feeding valve is arranged between the sand bin and the sand mixer. The liquid material feeding device is used for storing a binder and a curing agent and feeding the binder and the curing agent to the sand mixer. The sand mixer is used for conveying the molding sand and outputting the mixture of the molding sand, the binder and the curing agent for forming a sand mold. The vibrating table is arranged below the sand outlet of the sand mixer and is used for carrying a model and a sand box sleeved on the model and vibrating the mixture in the sand box through vibration. The application reduces the labor intensity, improves the quality of the sand mold and saves the cost.

The utility model relates to the field of 3D (three-dimensional) sand mold printing, in particular to a resin heating and heat preservation device and a 3D sand mold printer, which comprise a cylinder body used for accommodating resin and provided with a feed port and a discharge port; the heating mechanism is arranged in the cylinder body; the temperature sensor is arranged in the cylinder body; the temperature controller is arranged on the cylinder body, and the heating mechanism and the temperature sensor are electrically connected with the temperature controller. The temperature control device can accurately control the temperature of resin, ensures that the resin is in a normal state, is directly supplied to the 3D sand mold printer for use, meets the continuous use requirement of the 3D sand mold printer, and also can reduce the loss.

The utility model discloses an evanescent mode positioning device, relates to the field of evanescent mode production, and solves the technical problems of high difficulty in manual positioning operation and low efficiency in existing yellow film boxing. The device comprises a controller, a rectangular support, a first sliding rail and a second sliding rail, the first sliding rail is installed on one side of the bottom of the rectangular support, the second sliding rail is installed on the other side of the bottom of the rectangular support, moving modules are installed on the first sliding rail and the second sliding rail, and laser positioning modules are installed on the moving modules. The yellow film boxing positioning device achieves automatic operation of yellow film boxing positioning, improves accuracy of yellow film boxing positioning, reduces errors and operation difficulty of manual positioning, and improves working efficiency.

The present invention discloses a bidirectional spiral sand feeding device for a sand mold printer with uniform feeding, comprising a housing, a frame and two fixed plates provided inside the housing, the frame being mounted inside the housing via the two fixed plates, and a sand feeding assembly being provided above the frame. In the sand feeding process, the present invention drives a bidirectional spiral conveying rod to rotate via a sand feeding motor, and two spiral blades on the bidirectional spiral conveying rod feed sand material, thereby uniformly feeding the sand material to various positions of a sand feeding box. The present invention adopts a bidirectional spiral conveying rod with a bidirectional spiral structure, and during feeding, two spiral blades in opposite directions synchronously feed material toward both sides, thereby enabling the sand material to be uniformly fed, thereby avoiding the problem of uneven distribution of sand material in the edge area, ensuring the consistency and high precision of sand mold prints, and thus improving the overall production efficiency and product quality.

The utility model discloses an energy supply device for a core shooter, which comprises a mounting frame, a mounting hole is arranged on the inner wall of the mounting frame, an air storage tank is arranged on one side of the mounting frame, a sand storage box is arranged above the mounting frame, a sand shooting cylinder is arranged below the sand storage box, an empty box is fixedly connected to the inner wall of the mounting frame, and a sand shooting cylinder is arranged below the empty box. And an adjusting mechanism is arranged in the empty box. The utility model relates to the technical field of core shooters, in particular to an energy supply device for a core shooter, which realizes the adjustment of the discharge amount of compressed gas according to different molding sands through the matching among a rotating block, a threaded rod, a threaded block, a first vertical plate, a sliding block, a second vertical plate and an opening, and solves the problem that the discharge amount of compressed gas is difficult to adjust in the process of improving the power of the molding sands by the existing energy supply device. The problem that the use effect of an existing energy supply device is reduced due to the fact that the discharge amount of compressed gas cannot be adjusted and qualified sand cores cannot be manufactured when different types of molding sand are jetted is solved.

An intelligent sand core finishing workbench belongs to the technical field of casting equipment. Comprising a platform mechanism and a control system, the platform mechanism comprises a sand core containing platform, a plurality of long-strip-shaped through holes are formed in the sand core containing platform, a detection probe is connected to the table top on one side, a collecting box is connected to the lower portion of the sand core containing platform, the lower end of the collecting box is connected with a sand dust particle discharging pipeline, and one side of the collecting box is connected with a smoke dust gas pipeline; the smoke dust gas pipeline is connected with a stop valve I, and the sand dust particle discharge pipeline is connected with a stop valve II; the control system is in signal connection with the detection probe and used for controlling opening and closing of the two stop valves. The sand core finishing device is reasonable in design, compact in structure and convenient to use, controls opening and closing of the valves of the smoke dust gas pipeline and the sand dust particle pipeline through signal transmission of the detection probe and the control system, solves the problem of environmental pollution caused by scattering of sand particles on the ground and diffusion of smoke and dust generated during sand core finishing, and is beneficial to improving the clean production effect.

The utility model relates to the technical field of core making machine equipment, in particular to a safety protection device for preventing mechanical damage of neutron core making equipment, which comprises a core making machine body and a master control cabinet, a protective device is arranged on the top of the workbench on one side of the pressing die assembly; the protection device is arranged on the front side of the mold pressing assembly for protection, when any part of the body of a post worker crosses the grating position, the master controller controls the mold closing air cylinder of the core making machine to stop working immediately, the audible and visual alarm gives an alarm at the moment, the post worker is reminded, and after the worker exits from the grating position and presses a reset key, the core making machine is started. And the mold closing air cylinder can continue to act only when the equipment fails, so that the safety of personnel is fully guaranteed, a large accident potential is eliminated for a company, the problems of production interruption and the like caused by equipment failures can be avoided, and long-term stable operation is provided for the company.

The invention provides a spraying device for a nozzle of a core making machine and the core making machine, and relates to the technical field of core making machines. The spraying device for the nozzle of the core making machine comprises a cooling liquid source, a spraying assembly and a control assembly, the spraying assembly comprises a liquid inlet and a spraying opening, the liquid inlet is communicated with a cooling liquid outlet in the cooling liquid source, the spraying opening is arranged to face a nozzle of the core making machine, and the spraying assembly is used for receiving cooling liquid from the cooling liquid source and spraying the cooling liquid to the nozzle through the spraying opening; the control assembly is used for controlling the circulation state and flow of the cooling liquid between the cooling liquid source and the spraying assembly. According to the spraying device for the nozzle of the core making machine, cooling liquid is directly sprayed to the nozzle through the spraying assembly, the condensation effect of the cooling liquid on the nozzle can be effectively improved, the sand drying phenomenon at the head of the nozzle is reduced, meanwhile, the spraying duration and the spraying amount of the cooling liquid can be adjusted through the control assembly, and the spraying efficiency is improved. And the condensation lifting effect of the spraying assembly on the nozzle is further effectively ensured.

The present invention discloses an automatic slurry filling device for a special sticky slurry barrel for robot shell making in the field of investment casting technology, including an anti-condensation unit, including a main safety shield and a secondary safety shield that are staggered, and the height of the main safety shield is higher than the secondary safety shield, a sticky slurry barrel and a slurry filling barrel respectively arranged in the main safety shield and the secondary safety shield, an ultrasonic oscillator arranged on one side above the main safety shield, and one end of the ultrasonic oscillator is inclined toward the sticky slurry barrel, and two groups of stirring parts are respectively arranged in the sticky slurry barrel and the slurry filling barrel. The present invention arranges a slurry filling unit to perform the slurry replenishment work required for the robot shell making process, so that the slurry filling operation can be automated without manual operation, and the storage state of the slurry is monitored at all times by a sensor, so as to control the slurry filling unit to replenish the slurry in a timely and accurate manner, effectively avoiding the problem of low equipment working efficiency caused by untimely slurry replenishment, and significantly improving work efficiency.

The application relates to the technical field of casting processing auxiliary equipment, and particularly discloses a molding sand adding device for casting processing, which comprises a sand storage mechanism, a first conveying mechanism is arranged on one side of the sand storage mechanism, a vibrating table is arranged below the sand storage mechanism, a second conveying mechanism and a transfer mechanism are respectively arranged on the two sides of the vibrating table, a first pushing mechanism and a second pushing mechanism are respectively arranged on the sides, away from the vibrating table, of the second conveying mechanism and the transfer mechanism, and a pressing mechanism is arranged on the side, close to the first conveying mechanism, of the transfer mechanism. The molding sand adding device can realize the operations of molding sand adding, sand vibrating and sand pressing, guarantees the quality of sand adding, has the function of mixing and stirring the raw sand and raw materials before sand adding, enriches the application range of the device, improves the utilization rate of the device, helps workers to know the stock of the molding sand in the sand storage tank in real time, so that the molding sand can be supplemented in the sand storage tank in time, and the continuity of molding sand adding is guaranteed.

The present invention relates to a hollow turbine blade ceramic core and soft core support additive and subtractive composite processing platform, which belongs to the technical field of precision casting of hollow turbine blades for aircraft engines; it comprises a support column and a visual camera alignment module, a point laser detection module, an additive manufacturing module and a milling processing module. The support column is arranged on a workbench, and the ceramic core to be processed is mounted on the workbench through a fixture and a rotating spindle turntable; the visual camera alignment module, the point laser detection module, the additive manufacturing module and the milling processing module respectively provide four working processes: multi-station relative position calibration, ceramic core profile detection, soft core support blank preparation and soft core support milling forming, and the motion switching control of the four station modules is realized through the control of the upper computer; the present invention can realize the adaptive preparation of the soft core support on the ceramic core profile, improve the efficiency of the precise preparation of the soft core support, and reduce the influence of the dimensional accuracy caused by the clamping error.

The invention discloses a manufacturing process of an empty shell precoated sand core. The manufacturing process comprises the steps of mold preheating, segmented sand shooting, sand discharging and secondary sand core curing. According to the precoated sand core, the shell is formed through temporary curing after sand shooting, then forced sand discharging is conducted through compressed air, and finally secondary curing is conducted, so that the problem that sand discharging is not thorough through a traditional pouring method is solved, meanwhile, the heating part is partitioned, an exhaust channel can be closed, and therefore temperature uniformity is ensured, and it is ensured that the whole heating environment of the precoated sand core is the same; a traditional pouring method is replaced by compressed air forced sand discharging, the shell thickness of the sand core is evenly controlled, the wall thickness deviation of a casting is greatly reduced, the size consistency is improved, meanwhile, it is ensured that precoated sand is tightly filled through segmented sand shooting, the bending strength of the sand core is improved, and the risk that the sand core of a complex structure is broken is avoided.

The invention relates to the technical field of multi-machine cooperative control, in particular to a permanent magnet synchronous motor multi-machine cooperative synchronous control method and system for a precision casting production line. Forming a scheduling target which takes minimization of total completion time as a main part and simultaneously comprises capability matching gain, path conflict regularization and key process delay punishment, and generating a time-equipment-task ternary scheduling matrix; performing field-oriented performability judgment on the matrix, finishing matrix correction by adopting a structured minimum disturbance strategy of first time translation and then equipment migration, and maintaining task chain continuity by chained time sequence buffer to ensure that process connection is not damaged by correction; and generating a control instruction diagram by taking the corrected scheduling matrix as a blue, mapping each scheduling unit into an instruction node, and introducing a synchronous edge based on a uniform clock to realize parallel action alignment, so that beat consistency can be kept under complex working conditions and equipment heterogeneous conditions.