932 results about "Sprue" patented technology

A bearing hub casting mold and casting method. The mold comprises part models, risers and a sprue bush, wherein each riser is connected to the top of the part model; the sprue bush is connected to each riser by means of a horizontal runner; and the part models, the risers and the sprue bush are sequentially distributed from bottom to top in a vertical direction. In the bearing hub casting mold, by means of the provision of the riser at the top of each part model, a bearing hub is cast-molded by means of a top-pouring process, and after pouring, there is no isolated liquid-phase region during a solidification process of a casting, and the casting has no shrinkage porosity defect, thereby improving the quality of a bearing hub part.

The invention relates to the technical field of casting molds, and discloses an automobile planet carrier casting mold which comprises a mold plate arranged between an upper mold and a lower mold, an upper sand mold, a lower sand mold, a sand core and a sprue are installed on the mold plate, and the sand core is located between the upper sand mold and the lower sand mold and used for blocking cavity communication of the upper sand mold and the lower sand mold; guide columns corresponding to the upper and lower dies are mounted on the upper and lower end faces of the template, and are inserted into guide holes of the upper and lower dies, so that accurate die assembly is realized. Through combination of the upper sand mold, the lower sand mold and the sand core, the mold can mold an upper casting and a lower casting at the same time by using the sand core to block communication of the mold cavity, the production efficiency is greatly improved, the thickness of the sand core is set to be 0.8 times of the wall thickness of the casting, shrinkage porosity linearity caused by a hot spot in the casting can be avoided, and meanwhile, the production efficiency is improved. The pouring gate supplies liquid to the upper sand mold and the lower sand mold through the residue filter, impurities in molten metal are removed through the filtering assembly, the shrinkage porosity defect caused by the impurities is reduced, and therefore the qualification rate of castings is increased.

A method of casting metal parts such as valve seat inserts comprises pouring molten metal into a gating system of a mold plate stack wherein mold plates are located between a cover mold and a bottom mold, the gating system including a casting header, down-sprue, at least one distribution runner, at least one up-sprue, runners and gates in fluid communication with mold cavities configured to form metal parts, and the gating system including at least one internal passage in the cover mold in fluid communication with the up-sprue and the down-sprue. During filling of the mold cavities with the molten metal, air trapped in the mold plate stack is expelled to surrounding atmospheric air via the up-sprue, the internal passage and an upper end of the down-sprue. The molten metal is solidified to form cast metal parts interconnected by solidified metal in the down-sprue, distribution runner, runners and gates, up-sprue and internal passage.

The utility model relates to the technical field of injection molds, in particular to a mechanical automatic sprue shearing device which comprises a mold base B and a mold base A. The mold base A is located below the mold base B and can move up and down. The insert in the mold base A can be matched with the cavity in the mold base B, a gap capable of forming a decorative ring product is reserved between the insert and the cavity, a molten liquid runner capable of being communicated with the gap is arranged in the mold base B, and molten liquid can be injected into the gap along the molten liquid runner. And an automatic sprue shearing structure capable of automatically shearing a sprue in the molten liquid runner when the mold base B and the mold base A are subjected to mold opening operation is arranged in the mold base B and the mold base A.

The invention belongs to the technical field of casting, and particularly relates to a pouring device and method capable of dynamically adjusting the position, flow and flow direction of a pouring gate, the pouring device comprises a pouring ladle, a casting mold and a pouring pipe, the upper end of the pouring pipe is arranged on the pouring ladle, and the lower end of the pouring pipe is inserted into a cavity in the casting mold; the multi-degree-of-freedom movement mechanism is connected with the pouring pipe and is used for regulating and controlling the position of the pouring pipe; the sprue opening and closing assembly is used for controlling the opening and closing state of the sprue; the lateral flow outlet opening and closing assembly is used for controlling the opening and closing state of the lateral flow outlet; according to the pouring device and method, the design difficulty of a pouring system and the casting mold preparation difficulty are simplified, the process yield of castings is increased, the mold filling state, the mold filling capacity and the solidification feeding effect of molten metal are optimized, and the casting quality is improved. And the quality of the casting is improved, the flexibility and controllability of the production process are improved, and fusion with other technologies is facilitated.

The utility model belongs to the technical field of dies, and discloses an automatic water gap cutting die. The automatic water gap cutting mold comprises an upper mold, a lower mold, a runner plate and a linkage mechanism. And the upper mold and the lower mold are closed to jointly form a mold cavity for molding a plastic product. The runner plate is arranged on the lower mold in a sliding mode, the runner plate and the upper mold jointly form a glue supply runner after the upper mold and the lower mold are assembled, injection molding materials can be guided into the mold cavity through the glue supply runner, and a water gap is formed in the runner plate. The upper mold is in transmission connection with the runner plate through the linkage mechanism, so that the upper mold can drive the runner plate to slide through the linkage mechanism during mold opening, and the runner plate is separated from the mold cavity to cut off the water gap. When the mold is opened, the upper mold drives the runner plate to slide through the linkage mechanism to cut off the water gap, other special jigs or manual cutting is not needed, the water gap is cut off through the acting force of mold opening, the production efficiency of plastic products is improved, meanwhile, the cutting-off positions of the water gap are consistent, the consistency of the plastic products is high, and the percent of pass of the plastic products is higher.

The plastic injection part trimming structure comprises a plurality of pneumatic scissors arranged corresponding to sprues in plastic injection parts, a supporting table used for containing the plastic injection parts is arranged between the pneumatic scissors, and a pushing assembly and a conveying assembly are arranged on the opposite sides of the supporting table respectively. And the pushing assembly is used for pushing the cut injection molding part to the conveying assembly. By means of the gate shearing device, one-step posture shearing can be achieved, a mechanical arm does not need to be used for repeatedly adjusting the posture, in this way, the shearing efficiency can be improved, meanwhile, stroke errors caused by posture adjusting can be reduced, and the shearing quality of each gate is guaranteed.

The invention relates to the technical field of injection molding, in particular to an injection mold which comprises a front mold plate, a front mold core, a rear mold plate, a rear mold core, a rear mold slide seat, a stripper plate, an upper fixing plate, an ejector plate and a sprue needle which are connected with the ejector plate and the rear mold core respectively, and the sprue needle is provided with a sprue demolding part; the upper fixing plate is provided with a main runner, the stripper plate, the front mold plate, the front mold core and the rear mold slide seat are provided with branch runners, the rear mold core is provided with a sprue, the main runner, the branch runners and the sprue are communicated, the sprue is divided into a needle connecting part, a true water gap part and a false water gap part, and the true water gap part and the false water gap part are communicated with each other. And the true nozzle part and the false nozzle part are symmetrically arranged relative to the needle connecting part in a balanced manner. By means of the pouring gate demolding part, the contact area between the pouring gate needle and the material head is reduced, the phenomenon of bouncing off is not prone to occurring, the gravity center of the material head is balanced and the phenomenon of bouncing off is not prone to occurring due to the fact that the real water gap part and the fake water gap part are symmetrically arranged in a balanced mode.

The utility model relates to a pouring gate structure of a non-uniform wall thickness shell part die-casting die. A pouring gate comprises a straight pouring gate, a transverse pouring gate and a branch transverse pouring gate which are communicated in sequence. One end of the sprue is connected with the cross gate through the arc transition part, and the other end of the sprue is connected with the filling inlet; sprues are formed in the branch cross gates; the cross sectional area, perpendicular to the melt flowing direction, in the pouring gate is gradually reduced from the straight pouring gate to the pouring gate; the shape of the joint of the cross gate and the branch cross gate is that the perimeter of the cross section perpendicular to the solution flowing direction is increased along with approaching to the pouring gate; the inner circle radius of the arc transition part is defined as r, and the outer circle radius of the arc transition part is defined as R; the average thickness of the cross gate is defined as H; r = r + H; according to the pouring gate structure disclosed by the utility model, the problems of air trapping, air entrapment and the like of the pouring gate are effectively solved, so that the resistance of the pouring gate is reduced as far as possible and the temperature and filling speed of molten aluminum are increased in the filling process of a casting, and the mechanical property of a product is effectively improved.

The utility model relates to the technical field of injection molds, in particular to an injection mold cooling system which comprises a base, a sliding rod is fixedly connected to the base, a bottom plate is slidably arranged on the sliding rod, a lower mold is arranged on the bottom plate, a hydraulic rod used for pushing the bottom plate to move along the sliding rod is arranged on the base, and a top plate is fixedly connected to the top of the sliding rod. An upper mold is arranged on the top plate, the upper mold and the lower mold are respectively provided with a forming cavity, a sprue bush is mounted on the top plate, the sprue bush is communicated with the forming cavity of the upper mold, a plurality of heat conduction pipes are inserted into the upper mold and the lower mold at intervals, one end of each heat conduction pipe is processed to form a large-head end, and the other end of each heat conduction pipe is processed to form a small-head end. Cooling cavities are formed in the top plate and the bottom plate, the large-head ends are located in the cooling cavities, the top plate and the bottom plate are jointly connected with a circulating assembly, and the effects that the cooling speed of plastic parts in the injection mold is increased, and the injection molding work efficiency is improved are achieved.

The utility model relates to an automatic product taking and water gap separating jig for injection molding, which is connected to a manipulator clamp and comprises a clamp main plate connected to the lower end of the manipulator clamp and provided with an open slot for allowing a water gap of a product to penetrate through; the punching mechanism is arranged at the lower end of the clamp main plate and used for punching a water gap of the product; the positioning mechanism is arranged at the lower end of the clamp main plate, and the positioning mechanism is used for positioning and fixing the punching mechanism; the fixing mechanism is arranged at the upper end of the clamp main plate, and the fixing mechanism is used for clamping and releasing a water gap of a product; and the clamping mechanism is arranged at the lower end of the clamp main plate, is adjacent to the positioning mechanism and is used for clamping and releasing the product. By the adoption of the structure, automatic clamping of products and separation of water gaps are completed, the water gaps are automatically classified and collected, and the production efficiency of the products is improved.

An electromagnetic stirring low-pressure casting pouring system (100) comprises a flask, a sprue (110), a runner (130), a mold cavity (150) and a riser (170) being formed in a core inside the flask, wherein the runner is arranged at a top end of the sprue and is in communication with the sprue, the runner is in communication with the mold cavity, the riser is in communication with the mold cavity, overflow ladles (190) are arranged on two sides of or around the sprue, and top ends of the overflow ladles are in communication with the top of the sprue and are located below the runner, such that molten metal in the sprue overflows to the overflow ladles during pouring, and sequentially flows to the runner, the mold cavity and the riser after the overflow ladles are filled. Also provided is electromagnetic stirring low-pressure casting pouring equipment comprising the pouring system. By means of the present electromagnetic stirring low-pressure casting pouring system, the additionally designed overflow ladles enable the collection of the initial molten metal, which contains a number of impurities, and provide effective filtration of the impurity-laden molten metal, thereby further ensuring the quality and properties of the casting.

The invention relates to the technical field of flow guide shell pouring, in particular to a novel casting pouring process method of a flow guide shell for a deep-well pump, which comprises the following steps: acquiring molten iron liquid level temperature data, pressure data and an infrared image; a first ladle of molten iron is injected from a bottom straight pouring gate according to a first injection parameter, flows into a bottom transverse pouring gate, then enters a bottom inner pouring gate and flows into a flow guide shell cavity for the deep-well pump; evaluating whether the liquid level heat loss of the first ladle of molten iron is qualified, and adjusting a first pouring parameter; when the first ladle of molten iron reaches the preset temperature measuring point, a second ladle of molten iron is injected into a top sprue according to a second injection parameter, and the second ladle of molten iron enters the top sprue and then sequentially flows through a top cross gate and a top ingate to enter a special feeding head; whether a feeding channel of the special feeding head is blocked or not is evaluated, and the second preset pouring rate is adjusted; and whether heat distribution on the surface of the cavity is uniform or not is determined based on the heat dispersion deviation characteristic value, and the second preset pouring temperature is adjusted. The casting stability of the guide shell for the deep-well pump is improved.

The utility model provides a sand mould casting sample gating system, relates to the technical field of casting, the sand mould casting sample gating system comprises a sprue, a steady flow ring groove, a plurality of cross gates and a plurality of cavities, the sprue is connected to the steady flow ring groove, the plurality of cross gates are uniformly arranged around the steady flow ring groove at intervals, and the cavity is connected to the steady flow ring groove. The multiple cavities are connected to the multiple cross gates in a one-to-one correspondence mode, and the sectional dimensions of the multiple cavities are different. Compared with the prior art, a plurality of cavities are independently arranged, samples with various wall thicknesses can be prepared at the same time, different cavities are mutually independent, the cross gates are uniformly arranged, the temperatures of molten metal reaching the flow gates are similar, and the influence of uncontrollable factors on experimental results is eliminated to the greatest extent. And samples under various cooling speed conditions can be obtained through one-time pouring, so that the efficiency is improved, the cost is saved, and meanwhile, the stability of output data and the accuracy and reliability of an experimental analysis conclusion are ensured.

The invention discloses a preparation method of a TiAl alloy casting containing return scraps, the TiAl alloy return scraps used in the preparation method are casting sprues, patches and skull which are cut off in subsequent processing, and the preparation method comprises the following specific implementation steps: carrying out ultrasonic cleaning and surface treatment on the return scraps to remove a surface oxide layer; a new material with the target weight of 50% is used for smelting during primary smelting to obtain a primary ingot, a return material is placed below the turned primary ingot before secondary smelting, and then the primary ingot is smelted and poured into a preheated mold to form a casting, so that recycling of a TiAl alloy raw material is realized, the raw material cost is reduced by 50%, the preparation cost is reduced by 33%, and the production efficiency is improved. And the power consumption and the equipment loss are reduced, so that the purposes of energy conservation and emission reduction are achieved. The impurity element control of the cast ingot produced by the method is equivalent to that of alloy produced by conventional raw materials, and is convenient and fast compared with a preparation process by directly utilizing the raw materials. And the poured casting is uniform in component, compact in structure and high in purity.

The utility model relates to the technical field of sprue bushes, in particular to a die-casting sprue bush which comprises an outer sprue rod and an inner sprue rod, the inner sprue rod is detachably installed in the outer sprue rod, a heat dissipation cavity is formed between the outer sprue rod and the inner sprue rod, and a heat dissipation mechanism is arranged in the heat dissipation cavity. The heat dissipation mechanism comprises a plurality of groups of annular pipes, a conveying pipe is connected between every two groups of annular pipes which are adjacent up and down, connecting pipes are connected to the side walls of the two groups of annular pipes which are located at the uppermost part and the lowermost part, a water inlet pipe and a water outlet pipe are in threaded connection to the two groups of connecting pipes respectively, and the water inlet pipe and the water outlet pipe are both installed on the outer sprue rod. The heat dissipation mechanism is convenient to install through the heat dissipation cavity between the inner sprue rod and the outer sprue rod, heat on the inner sprue rod can be rapidly transferred and cooled through the arrangement of the heat dissipation mechanism, and damage to the sprue cover caused by too high temperature is avoided; and the inner sprue rod and the outer sprue rod are detachably arranged, so that maintenance is convenient, and convenience is provided for use.

The invention relates to the technical field of workpiece residual root grinding, and discloses an abrasive belt grinding and deburring machine for residual roots of a casting head of a turbine shell of a gas compressor, which comprises a grinding and deburring machine main body and a grinding and deburring mechanism fixed at the rear end of the top of the other side of the grinding and deburring machine main body, a first stand column is fixedly installed on one side of the top of the grinding and deburring mechanism, and a second stand column is fixedly installed on the other side of the top of the grinding and deburring mechanism. When the residual root of the casting head of the turbine shell of the gas compressor is ground, if the cross section of the residual root is large and smooth, the bending adjusting plate is rotated to be in a vertical state, the maximum cross section of the first grinding abrasive belt makes contact with the residual root for grinding, and if the residual root is a curved surface or an inclined surface, the bending adjusting plate is rotated to be adjusted to a proper angle, so that the residual root is ground. And then, after a locking bolt penetrates through an arc through groove to lock the bending adjusting plate, the first grinding abrasive belt is located at a proper angle to grind the residual root of the casting head of the turbine shell of the gas compressor.

The invention discloses welding equipment for an acid-resistant pump shell wax mold and a pouring gate wax rod, and relates to the technical field of welding, the welding equipment comprises a pouring gate wax rod conveying device and a wax mold conveying device, a plurality of lifting type fixing structures are arranged on the pouring gate wax rod conveying device at equal intervals, and a plurality of stabilizing structures are arranged on the wax mold conveying device at equal intervals; the pouring gate wax rod and wax mold melting device has the advantages that the pouring gate wax rod and wax mold melting device is controlled by the lifting device to move up and down so as to be in contact with the pouring gate wax rod and the wax mold respectively, and the temperature of the pouring gate wax rod and the temperature of the wax mold melting area are maintained by the aid of the heat preservation structure; and then the lifting type fixing structure drives the pouring gate wax rod to move to be in contact with the wax mold to complete welding, the problem of waste caused by the fact that the hot knife melts more materials on the surfaces of the pouring gate wax rod and the wax mold is solved, the situation that temperature is transmitted into the wax mold to affect the quality of the wax mold is avoided, and therefore the problem that the production quality of the acid-resistant pump is affected is solved.

The invention relates to a valve casting pouring gate water jet cutting method based on machine vision. A valve casting pouring gate water jet cutting device based on machine vision comprises a mechanical arm automatic feeding device, a multi-angle pouring gate cutting displacement clamp, a cutting part recognition device and a three-axis water jet cutting machine tool. A valve casting is fixed on a special tray and is fixed in a standardized posture, namely, a first round pipe body is erected in a V-shaped erecting groove of the tray, a first runner section is erected on a second supporting plate, and the upper end flange face of a second connecting flange is horizontal, so that the valve casting is kept stable on the tray; and the 3D camera is more accurate in shooting and posture recognition. The machine vision automatically recognizes a to-be-cut part, an accurate cutting path is intelligently generated to be matched with water cutting equipment, the cutting precision and efficiency are remarkably improved, automation of the whole process from machine vision recognition automatic feeding, machine recognition multi-angle automatic overturning and cutting after clamping to quality inspection and discharging is achieved, and the production efficiency is remarkably improved.

The invention discloses non-quenched and tempered steel for an automobile piston and a production process of the non-quenched and tempered steel. The steel comprises the following chemical components in percentage by weight: 0.37%-0.40% of C, 0.60%-0.75% of Si, 1.40%-1.50% of Mn, less than or equal to 0.025% of P, 0.020%-0.040% of S, 0.10%-0.20% of Cr, 0.012%-0.025% of Alt, 0.08%-0.13% of V, 0.015%-0.030% of Ti, less than or equal to 0.05% of Mo, less than or equal to 0.10% of Ni, less than or equal to 0.10% of Cu, 0.015%-0.020% of N and the balance of Fe and inevitable impurities, and the ratio of Alt to N is 0.6-1.0. The RH-LF process is innovatively developed, and stable control over the nitrogen content, zero blockage of a water gap and reduction of bending deformation of steel are achieved in cooperation with the manganese nitride alloy, nitrogen control through bottom blowing of nitrogen, the Ca alloying process and the rolling heat preservation process.

The high-quality casting device for producing a thick aluminum part includes: a mold having a movable mold and a fixed mold coming into close contact with each other to form a cavity; a platen having a movable platen on which the movable mold is mounted and a fixed platen on which the fixed mold is mounted; an upper tie bar and a lower tie bar connected to the platen; a high-pressure squeeze platen connected to the upper tie bar and the lower tie bar; a squeeze pressurizer located on the high-pressure squeeze platen to pressurize a molten metal filled into the cavity; a sprue adapted to pour the molten metal into the cavity of the mold; a pouring ladle attached to the mold to pour the molten metal into the sprue; and a casting extractor located on one side of the mold to extract the casting solidified inside the cavity.

The invention relates to a box type sand core type pouring system which comprises a sand box, a pouring system and a sand core box, and the pouring system comprises a first mold, a plurality of second molds, a cavity and a sprue; after sand is put into the sand core box to be solidified, the sand box is opened, and the first mold and the second mold are pulled out, so that channels, left on the sand box and the sand core box, of the first mold and the second mold form a transverse pouring gate and an inner pouring gate respectively; enabling the molten iron to sequentially pass through a straight pouring gate, an inner pouring gate and a transverse pouring gate to enter a cavity, and completing the molding of a casting; by optimizing the design of the pouring channel, uniform distribution of molten metal is achieved, the defects, such as air holes and shrinkage porosity, in a casting are reduced, and the overall quality of the casting is improved. By optimizing the design of the pouring channel, the hardness deviation of the plate surface is obviously reduced to be at least HB10, the sand inclusion and falling defects of the plate surface are eliminated, the use of consumables such as a ceramic tube, a rubber bottom and tube sticking glue is reduced, the production cost is greatly reduced, and the production efficiency is improved.

The application relates to the technical field of die casting equipment, and particularly discloses an energy-saving die casting machine, which comprises a mold locking column frame and a barrel, the barrel is arranged on the mold locking column frame, a die cavity is coaxially arranged in the middle part of the barrel, a die assembly is arranged in the die cavity and can slide in the die cavity to press the metal liquid into a mold, a sprue is arranged on the barrel and connected with the die cavity, a bushing part is connected to the inside of the sprue, and annular parts are coaxially arranged on the two ends of the bushing part and outside the barrel, the energy-saving die casting machine can protect the sprue by the bushing part when the metal liquid is poured, the annular parts can block the metal liquid at the two ends of the sprue, the metal liquid can only slide in the area between the two annular parts, and when the die rod pushes the hammer head to press the metal liquid, the arc-shaped plate rotates around the barrel between the two annular parts to gather and push the sliding metal liquid to the sprue.

The invention discloses a forging method and a forging device for a thin-wall wind power main shaft with an ultra-large inner hole, and belongs to the technical field of wind power main shaft manufacturing. The invention discloses a forging method for a thin-wall wind power main shaft with an ultra-large inner hole. The forging method comprises the following steps that firstly, chamfering, water gap removing, upsetting and drawing-out are conducted, and then blanking is conducted; step 2, upsetting to a certain height by using an upsetting drain plate, punching, chambering by using a saddle, coining and distributing; thirdly, shaft bodies are formed and subjected to heat preservation, all shafts in the middle are drawn out to the process size through a profiling core rod, and finally the two small shafts are reserved in advance for hole shrinkage; fourthly, the inner hole of the small shaft end is shrunk to the process size, the flange is upset to the process size through a special tool, and finishing is conducted; by means of the profiling core rod, the shaft hole can be conveniently machined, the follow-up machining time is shortened, waste of workpieces can be reduced, the nozzles are arranged on the inner wall of the protection plate, the working face of the anvil block can be purged in the forging process, gathering of oxidized chippings on the anvil block is reduced, and the forging efficiency is improved.

The invention belongs to the technical field of injection molds. The problems that in the prior art, an automatic sprue shearing structure of an existing injection mold is large in occupied space, poor in sprue shearing quality and long in shearing action beat are solved. The automatic sprue shearing structure of the injection mold comprises a rotating shaft which is vertically and rotatably arranged on a movable mold, a branch runner which is communicated with a cavity and a main runner is formed between the upper end face of the rotating shaft and a fixed mold, a spiral groove is formed in the outer side wall of the rotating shaft, and a steel ball fixing ring is fixedly connected to the movable mold. The rotating shaft is inserted in a steel ball fixing ring, a steel ball is embedded in the steel ball fixing ring, the steel ball is embedded in a spiral groove of the rotating shaft, the movable mold comprises a first movable mold plate and a second movable mold plate which are sequentially arranged from top to bottom, and when the first movable mold plate moves relative to the second movable mold plate, the first movable mold plate is fixed; the rotating shaft can move in the vertical direction and can be pushed by the steel balls to rotate by a certain angle. The pouring gate shearing device has the advantages of compact structure, good pouring gate shearing quality and short shearing action beat.

The utility model discloses an injection molding cooling device which comprises a support, an air cylinder is installed at the upper end of the support, an upper mold is installed at the output end of the air cylinder, an injection mold is installed on the inner wall of the bottom end of the support, an injection molding sprue hole is formed in the upper end of the injection mold, a cooling structure is arranged in the injection molding sprue hole, and the cooling structure comprises a partition pipe. Two sets of screws are arranged at the upper end of the partition pipe, and the output ends of the screws penetrate through the partition pipe to enter the injection mold. According to the injection molding cooling device disclosed by the utility model, the temperature of the inner wall of the injection molding sprue hole can be cooled, so that an injection mold is cooled, and the cooling effect of the injection mold is improved.

The injection mold comprises a forming assembly and a sprue, the forming assembly comprises a first mold core and a second mold core, a cavity is defined when the first mold core and the second mold core are closed, and a through hole penetrating through the thickness direction of the second mold core is formed in the second mold core; the sprue is provided with a feeding channel and a side sprue which is communicated with the feeding channel and penetrates through the sprue, the side sprue is located on the side face of the sprue, and the sprue is slidably arranged in the through hole in the thickness direction of the second mold core so as to be switched between a first position and a second position; at the first position, the side gate of the sprue is communicated with the cavity, and a sizing material can enter the cavity from the feeding channel; in the demolding process, the sprue can move from the first position to the second position, and redundant rubber formed in the side sprue can be cut off by the second mold core.

The invention discloses a digital temperature control system for a large-size thin-wall aluminum alloy casting low-pressure die. The digital temperature control system comprises a temperature monitor, a heating device, a cooling device and a control device. A cavity sprue is used as a sphere center, a plurality of spherical surfaces are determined from the sphere center to the outside, the area between the sphere center and the sphere surface closest to the sphere center and the area between every two adjacent spherical surfaces are monitoring areas, and the temperature monitors are arranged in the monitoring areas; the heating device is used for heating each monitoring area, and the cooling device is used for cooling each monitoring area; and the control device controls the heating device to heat or controls the cooling device to cool according to the mold temperature detected by the temperature monitor, so that the temperatures of the at least two monitoring areas are different. When the temperature control system is used for producing large-size thin-wall aluminum alloy castings, the heating device and the cooling device can be automatically controlled to adjust the temperature of the mold, so that the temperature of the mold is normal process temperature, and the quality of the castings is effectively ensured.

The utility model relates to the technical field of casting pouring gate cutting, in particular to a casting pouring gate cutting device which comprises a bottom plate, a collecting box used for collecting and cutting a casting pouring gate is arranged on the upper portion of the bottom plate, and first sliding grooves vertically penetrating through a mounting plate are formed in the two sides of the mounting plate. A clamping plate used for clamping a casting is slidably arranged in the first sliding groove, a support is fixedly mounted on the upper portion of the mounting plate, and a cutting mechanism used for cutting a pouring gate of the casting is arranged on the upper portion of the support. A plurality of first electric telescopic rods simultaneously push the push plate to move relatively, so that gaps among a plurality of castings placed on the mounting plate are gradually reduced, the castings are ensured to be in the central position of the positioning plate, and when a second electric telescopic rod pulls a clamping plate to move, the pouring gate ends of the castings are attached to the positioning plate, so that the casting quality is improved. And non-uniform cutting during casting pouring gate cutting is avoided, multiple castings can be conveniently cut at the same time, and the cutting efficiency is improved.

The utility model discloses a low-pressure casting device for a direct mold filling flywheel casing, and belongs to the technical field of casting of automobile parts. A low-pressure casting device for a direct mold filling flywheel casing comprises a mold piece composed of a lower mold, a side mold and an upper mold, a mold core is arranged in the mold, a mold cavity is formed among the mold core, the lower mold, the side mold and the upper mold, and the low-pressure casting device further comprises a transition connecting device arranged on the lower mold. The transition connecting device is provided with a liquid inlet, a transition cavity and at least two groups of sprue gates, and the transition cavity is communicated with the mold cavity through the sprue gates; according to the utility model, through the arrangement of the transition connecting device, a pouring channel is omitted, a product is directly molded by pouring, solution materials in the pouring gate are saved, and the yield of the product is improved.