144results about "Moulding plants" patented technology

Alloy products are produced with a waxless casting process. A model of a ceramic casting vessel (34) defining a desired product shape is digitally divided into sections (10, 40, 42). Each section is translated into a soft alloy mater tool (14) including precision inserts (20) where needed for fine detail. A flexible mold (24) is cast from each master tool, and a section of the ceramic casting vessel is cast from the respective flexible mold. The vessel sections are assembled by aligning cooperating precision features (58, 60) cast directly into each section and the alloy part is cast therein. No wax or wax pattern tooling is needed to produce the cast alloy product. Engineered surface features (54) may be included on both the interior and exterior surfaces of the shell sections.

In a hybrid injection system of a die casting machine, the occurrence of a large electric power loss can be prevented by avoiding a large current at a pressure-holding step and the size of a motor is reduced.

In an injection system comprising an injection cylinder (16) housing an injection piston (15) for injecting molten metal to a mold and an electric booster (8) of hydraulic cylinder type, a head chamber (8H) to the electric booster communicates fluidly with a head chamber (16H) of the injection cylinder, causing a booster piston rod (5) to be housed in the electric booster (8) to move linearly and thus pressing under pressure to move the injection piston to perform injection molding. Because a stop valve (25) is provided in a pipe that causes the head chamber (16H) of the injection cylinder to communicate with a rod chamber (8R) of the booster (8), it is possible for the pressure of the hydraulic oil to act on a head area of the electric booster at a pressure-increasing step for increasing pressure of the molten metal, and for pressure of the hydraulic oil to act on a rod area of the electric booster at a pressure-holding step for holding pressure of the molten metal.

An automatic iron mold sand lined production line relates to a production line which is used when the iron mold sand is lined on a female mold in the production process of a crankshaft, and mainly aims at solving the problems that the conventional iron sand lined production line for producing the crankshaft is large in land occupation area, low in working efficiency and the like. The automatic iron mold sand lined production line comprises a double-station sand ejector, three mold turnover machines, two mold opening-closing machines, a perforation sand shakeout machine, a shifting machine, a female mold cooling device and a vibration sand shakeout machine; and the automatic iron mold sand lined production line also comprises a plurality of sections of tracks, a plurality of sections of casting line tracks and three sections of cart tracks, each section of tracks is fixedly disposed on a track support, each section of tracks is provided with a plurality of driving wheels and a plurality of driven wheels, the driving wheels are connected with one another through a chain, the driving wheels and the driven wheels are disposed at intervals, a plurality of motors are fixedly dispsed on the track support, and the driving wheels are connected with chain wheels which are disposed on power output shafts of the motors through chains. The automatic iron mold sand lined production line has the advantages of small land occupation area, low labor intensity of workers, good safety and fast production speed.

The invention discloses an automatic precision core assembly moulding production line, a casting production line and a production method thereof, wherein the core assembly moulding production line comprises an outer die core making area, an outer die core delivery line, an outer die core surface-drying furnace, a mould cavity core making area, a mould cavity delivery line, a mould cavity surface-drying furnace and a core assembly delivery line; a robot I with transportation and assembly functions is disposed on the core assembly moulding production line; the casting production line further comprises a pouring line and a robot II with a transportation function; all the sand cores used by the core assembly are produced, delivered and assembled on the core assembly moulding production line; moreover, all the actions are realized by a highly-automatic method, and robots are used for core assembly, so that the automation degree is high, the labour intensity of workers is low, the working environment is good, the production efficiency is high, the energy is saved, the consumption is decreased, the process stability is good, and the product precision is high; the sand cores used by the core assembly are shot by a cold-box core making machine; and the cast product has a high dimensional precision, a good appearance quality and a high production efficiency.

The invention discloses a vacuum-forming production line capable of recycling sand. The vacuum-forming production line comprises a casting mold frame mechanism, a vacuum forming mechanism, a casting mechanism, a sand-casting separation mechanism, a sand recovering mechanism, an electric block device and a crane, wherein the vacuum forming mechanism is used for filling sand into the casting mold frame mechanism and laminating the two sides of the sand; the casting mechanism is used for filling metal melted liquid into the laminated casting mold frame mechanism; the crane is coordinated with the travelling of the electric block device; an inlet of the sand recovering mechanism is communicated with the sand-casting separation mechanism, and an outlet of the sand recovering mechanism is communicated with the vacuum forming mechanism. According to the vacuum-forming production line disclosed by the invention, the sand recovering mechanism is arranged to automatically collect, cool and return sand and remove impurities after foundry; the whole sand recovery process can be automatically finished by the machine, so that the working procedure of manual processing can be avoided, a mass of manpower and material resources can be reduced, the sand utilization efficiency can be greatly improved, the sand recovery timing sequence can be shortened, and the production efficiency can be improved.

A safety controller having a total worst case propagation delay, exceeding the required propagation delay required by a safety process, may be used to control the safety process by monitoring actual delays in signal processing in the safety controller and moving to a safety state if a signal delay exceeds an amount less than the total worst case propagation delay.

The object of the present invention is to provide a device for low-pressure casting wherein the stalk or the guiding hole is filled with inert gas by causing the space formed over the molten metal in the pressurizing room to communicate with the stalk or the guiding hole. The device for low-pressure casting (100) wherein molten metal is supplied into a mold through a stalk (8) suspended from a gate for pouring of the mold (7) or through a guiding hole connected to the gate for pouring at one end by pressurizing the molten metal by inert gas, the device comprising: a room for holding molten metal (1); a pressurizing room (2) to be in communication with the room for holding molten metal through a hole for communication (4), wherein a bottom end of the stalk (8) enters the pressurizing room or another end of the guiding hole is connected to the pressurizing room, and wherein the molten metal is pressurized by inert gas; an on-off valve (5) for opening and shutting the hole for communication; a sensing means (15) for sensing that the space over the molten metal in the pressurizing room communicates with the stalk or the guiding hole; and a means (30) for supplying inert gas to an upper part of the pressurizing room.

A safety door automatic opening/closing device is capable of freely (arbitrarily) setting and controlling the opening/closing speed and the open position to shorten a waiting time required to open/close a safety door and capable of eliminating a touch switch; and a method of controlling the same.

The invention relates to a turntable vacuum moulding production line which comprises a shakeout transfer trolley, an electromagnetic iron absorption mechanism, a pouring mechanism, box closing manipulators, a box returning motor roller way, a box opening space motor roller way and a box opening space. In the invention, multiple pairs of upper and lower box models are arranged in a circular automatic moulding ring respectively; the models are continuously subjected to coating, spraying, drying, empty box fastening, sand addition, compaction, smoothening and back film coating, wherein all operations can be automatically performed, except for the spraying which is manually operated. Two rapping box closing manipulators are arranged between two moulding rings so as to perform rapping, box turning and box closing on the lower and upper boxes respectively. The closed moulding boxes are continuously arranged in the pouring moulding ring and sequentially subjected to pouring, cooling and box opening, wherein manual pouring is adopted generally, and other processes can be realized automatically; and due to the automatic moulding line, the production efficiency is greatly improved, and the moulding of 20 models can be realized per hour.

The present invention has an object of preventing segregation during the casting of Mg alloy or the like containing additive elements having a great difference of specific gravity to obtain a cast having a good quality.

A casting mold 1 having a molten metal received therein is rotated in one direction by a rotary device 7 with the vertical axis as a rotary axis while solidifying the molten metal for a predetermined period of time, and, after the predetermined period of time is lapsed, the casting mold 1 is rotated in the direction opposite the direction of rotation for a predetermined period of time, and the rotation in the opposing directions is repeated so that the molten metal is solidified. The molten metal can be shaken and agitated without roughening the surface of the molten metal to uniformalize the distribution of temperature of the molten metal in the casting mold. The production of segregates can be minimized and a fine homogenous structure can be obtained. Thus, a metallic material excellent in ductility and strength can be obtained.

The invention relates to a production line for the production of cast parts (M) from a metallic melt, in particular a light molten metal, which takes place in a continuous cycle, comprising a plurality of functional units, including a core production unit (2) for the production of casting cores, a mould assembly unit (3) for assembling casting moulds (G) formed as core packages, a casting unit for filling the molten metal into the casting moulds (G), a cooling unit (5a) for cooling the molten metal respectively contained in the casting moulds (G), and a demoulding unit (5b) for destructive removal of the casting mould (G) from the cast part (M). A production line of this type allows economical and flexible production of cast parts, in particular motor units, with a high loading capacity and complex form according to the invention in that the functional units (2 to 5b) successively passed through in each case are directly connected to each other by a respective conveying device (12, 19), and in that the cycle time with which the production line (1) ejects finished cast parts (M) is determined by the cycle time with which the core production unit (2) supplies the casting cores produced by the core production unit.

The invention provides sand mould composite molding equipment which comprises a planar motion system, an exhausting dust collection system, a motion control system and the like, and is characterized by further comprising a molding sand feeding system, a resin injection system, a cutting system, a multifunctional platform system and the like. When a casting mold is thick, heavy and large in size and suitable for cutting molding, a multi-shaft planar motion system is adopted to drive the cutting system to complete the cutting molding of the casting mold; when the casting mold is provided with a complicated internal cavity structure and suitable for dispersed/accumulated molding, the multi-shaft planar motion system is adopted to drive the resin injection system to perform dispersed/accumulated molding on the casting mold under the assistance of the multifunctional platform system and the molding sand feeding system; the sand mould composite molding with the bottom to be cut and the top to be accumulated can also be performed. With adoption of the sand mould composite molding equipment, the cutting molding, the dispersed/accumulated molding and the sand mould composite molding of a large or medium casting mold with any shape can be realized, so that the equipment investment is greatly reduced; in addition, a proper molding manner can be selected, the manufacturing speed and quality of the casting mold can be improved, and the sand mould composite molding equipment has the value of popularization and application.

The invention provides a production line for V-method modeling. The production line comprises a modeling region, a mould overturning and mould assembling region and a loam core discharging region which are arranged in sequence, wherein the modeling region comprises two sets of modeling trolleys arranged on a guide rail; the mould overturning and mould assembling region comprises a mould overturning machine, an elevated trackway arranged above the mould overturning machine, and a mechanical arm trolley arranged on the elevated trackway; and the loam core discharging region comprises a transportation trolley arranged on the guide rail. According to the production line for the V-method modeling, a traditional production mode that a task is finished by allocating and transporting a casting mould to different stations through the reciprocating of a travelling crane is changed so that the production rate is improved and the occupied area of equipment in a workshop is reduced; and the production line can produce compactly and is operated at high speed, so that the labor force is saved and the safe production is greatly facilitated.

The invention discloses a casting mold production line which comprises an input trolley, an output trolley and at least two molding machines. The input trolley and the output trolley are arranged on the two sides of the molding machines respectively. The sides, away from the molding machines, of the input trolley and the output trolley are provided with pushing devices respectively. The input trolley and the output trolley can move to correspond to the molding machines respectively. According to the casting mold production line, the input trolley moves to correspond to the molding machine, the pushing devices push sand boxes on the input trolley into the molding machines, the sand boxes inside the molding machines are pushed onto the output trolley, the output trolley transports the sand boxes to the next production line, the input trolley is returned and continuously loads the sand boxes, the sand boxes are transported to other molding machines, and the steps are repeatedly executed. It is obvious that the operation takt of the sand boxes is accelerated due to the arrangement of the input trolley and the output trolley, and the production efficiency is improved.

A mold assembly cell for sand mold production comprising a turntable wherein sand cores and other mold parts (which together cooperate to define the casting cavity of the sand mold) are automatically and progressively assembled following a sequential pre-programmed schedule by programmable robots located in proximal relationship with the turntable and a core shooting machine. The assembly turntable rotates clockwise or counterclockwise to permit placement of progressively more-complete mold packages in each of at least three assembly stations to allow the robots to reach the molds being assembled at different angles for simultaneously setting the sand cores and other parts of the mold according to said pre-programmed assembly schedule. Also a mold assembly line comprising a plurality of the foregoing assembly cells to form sand molds for casting complex-geometry aluminum parts, such as aluminum engine blocks and cylinder heads, with greater flexibility, efficiency and productivity.

A vacuum induction melting and strip casting equipment for rare earth permanent magnetic alloy includes a vacuum induction melting and strip casting chamber, a material receiving heat preservation treatment chamber, a cooling chamber and an isolation valve. The isolation valve is located between the material receiving heat preservation treatment chamber and the cooling chamber, the vacuum induction melting and strip casting chamber is located above the material receiving heat preservation treatment chamber, an outlet of a material guiding tube of the vacuum induction melting and strip casting chamber is corresponding to the material receiving heat preservation treatment chamber. Water-cooled electrodes, a vacuum pumping device, an inert gas introduction pipeline, a temperature measurement mechanism, a pressure gauge, a vacuum gauge and a safety valve are provided on the vacuum induction melting and strip casting chamber. The present invention improves the production efficiency and has high production performance and good consistence.

The use of green sand is eliminated by replacing green sand molds with all core sand assemblies that provide, during casting, both the internal and external surfaces of a casting, such as a cylinder head or engine block. In the process, a mold is formed from the same core sand that is used to form the core elements defining the internal passageways of the casting. A mold-core carrier is constructed with downwardly converging sides that hold assembled mold and core elements together, without fasteners, during transportation and pouring of the molten iron alloy into the mold-core assembly and the cooling period to form the casting. After the casting is formed, the core sand from both the mold elements and core elements is recovered, and may be recycled and processed to form further mold elements or core elements or both.

The invention relates to an automatic sand mold casting mold forming production line which comprises a truss robot, a feeding device, a sand removing device, a coating device, a drying device and a core assembling device. The truss robot is mounted on two parallel sliding rails, and can slide along the sliding rails, and the sliding rails are mounted on stand columns. The sand removing device comprises an automatic sand removing room, a manual sand removing room and a transferring trolley. The truss robot can place workpieces on the transferring trolley, and the transferring trolley can transfer the workpiece to the automatic sand removing room and the manual sand removing room. According to the automatic sand mold casting mold forming production line, unmanned operation can be achieved inthe whole process, the labor cost is reduced, rigid grabbing points do not need to be additionally arranged, and the demolding difficulty is reduced; the grabbing process and the like are high in repeated positioning precision, sand molds cannot be damaged, the sand core rejection rate is low, and all sand molds can be compatible; and due to the fact that sand mold production is mixed routing production, the time wasted by replacing fingers and other accessories is greatly shortened, and the production cost is reduced.

The present invention provides a conveying method and a device for conveying a sand box set without sand box stop position error when large thermal expansion amount of the sand box exists. The conveying method provided by the invention comprises the following steps: sand box gathering step in which a hydraulic push cylinder (1) operates for pushing the sand box set (3) which is configured in series to a hydraulic buffer cylinder (2) and eliminating a clearance (4); a conveying step in which the hydraulic push cylinder (1) operates in high speed and the hydraulic buffer cylinder (2) is switched to a high-back-pressure state for reducing speed in a speed reduction area, thereby conveying the sand box set (3) for a distance which is equivalent with the size of one sand box; and a final step for further retreating the hydraulic buffer cylinder (2) after the sand box set (3) is stopped, thereby forming a clearance (4) between the hydraulic buffer cylinder (2) and the sand box set (3).