CN121061134B - Casting forming device and method for large-tonnage mining vehicle rim - Google Patents
Casting forming device and method for large-tonnage mining vehicle rimInfo
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- CN121061134B CN121061134B CN202511622181.6A CN202511622181A CN121061134B CN 121061134 B CN121061134 B CN 121061134B CN 202511622181 A CN202511622181 A CN 202511622181A CN 121061134 B CN121061134 B CN 121061134B
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Abstract
The invention belongs to the technical field of pouring production, and particularly discloses a casting forming device and method for a large-tonnage mining vehicle rim, comprising a machine base, a hydraulic support frame, a lifting mechanism, a hydraulic claw, two groups of semi-combined molds and a sliding rail mechanism, wherein the hydraulic support frame is vertically arranged on one side of the upper surface of the machine base, the lifting mechanism is arranged above the inner part of the hydraulic support frame, two ends of the inner part of the machine base are connected with the corresponding two groups of semi-combined molds through symmetrically arranged mold clamping mechanisms, limiting rods are symmetrically and fixedly inserted at two sides of the interior of the machine base, two groups of semi-closed molds are jointly sleeved outside the two limiting rods in a sliding manner, a U-shaped frame is fixedly arranged at one side of the outer wall of the machine base, the sliding rail mechanism is arranged in the U-shaped frame, the problem of gate blockage can be solved by rotating the chip removing mechanism, and the cooling system is driven by the pouring action, so that the high-efficiency automatic production of the high-quality rim is realized.
Description
Technical Field
The invention belongs to the technical field of pouring production, and particularly discloses a casting forming device and method for a large-tonnage mining vehicle rim.
Background
The large-tonnage mining dump truck is core equipment of modern open-pit mining, and the wheel rim of the large-tonnage mining dump truck is used as a key component for directly bearing hundreds of tons of load and contacting the ground, and has extremely high strength, rigidity and impact toughness. In view of the severe service conditions, such rims are commonly formed from high strength alloy steel by casting to ensure structural integrity and reliability of performance;
At present, two half metal mold dies of horizontal parting type are mainly adopted in the industry to cast and mold rims. However, in the long-term practice of this process, especially in the face of large, thick-walled steel castings, conventional casting devices and methods expose the following technical drawbacks that need to be addressed in two key links of gating and mold cooling;
The pouring opening of the existing device is generally divided into two parts, and the pouring opening is connected with the half-closing molds on the left side and the right side in a separated mode. When molten steel with the temperature of more than 1500 ℃ is poured, the pouring gate is extremely easy to adhere to splashed molten steel, slag and oxide skin after being used for many times, so that a hard sinter is formed. Due to the solidification shrinkage characteristics of molten steel, the plugs are extremely firmly attached, and the cleaning work is extremely inconvenient because the pouring gate is fixed on a huge mold. The operator must use long steel drills or the like to perform high-strength manual poking and cleaning after the mold is cooled. The mode is low in efficiency and high in labor intensity, and the smoothness of the inner wall of the pouring channel is extremely easy to damage. Incomplete or untimely cleaning can directly lead to the reduction of the sectional area of a pouring channel, disturb the stable filling of molten steel, introduce vortex and gas coiling, finally form fatal defects such as slag inclusion, air holes, cold insulation and the like in rim castings with poor value, and cause huge economic loss;
In addition, molten steel contains huge heat content, and heat balance control in the solidification process is the core for guaranteeing the quality of castings. The cooling water channels in the traditional die are in simple serial or straight-through layout, the flow channels are long and bent, so that the flow resistance of the cooling liquid is high, the flow speed is low, the heat exchange efficiency is low, and huge heat on the surface of the die cavity is difficult to take away rapidly.
Therefore, we propose a casting device and method for large tonnage mining vehicle rims, which improves the defects.
Disclosure of Invention
The invention aims to solve the problems in the background art, and provides a casting forming device for a large-tonnage mining vehicle rim, which comprises a machine base, a hydraulic support frame, a lifting mechanism, a hydraulic claw, two groups of semi-combined molds and a sliding rail mechanism, wherein the hydraulic support frame is vertically arranged on one side of the upper surface of the machine base, the lifting mechanism is arranged above the inside of the hydraulic support frame, two ends of the inside of the machine base are connected with the two corresponding groups of semi-combined molds through symmetrically arranged mold clamping mechanisms, limit rods are symmetrically and fixedly inserted on two sides of the inside of the machine base, the two groups of semi-combined molds are jointly sleeved outside the two limit rods in a sliding manner, a U-shaped frame is fixedly arranged on one side of the outer wall of the machine base, the sliding rail mechanism is arranged inside the U-shaped frame, a sliding seat is arranged outside the sliding rail mechanism, an L-shaped clamping frame is slidingly arranged above the inside the sliding seat, one end of the L-shaped clamping frame, which is far away from the sliding seat, is rotatably provided with a liquid-distributing pipe, the upper part Fang Liantong is provided with a lower hopper, two groups of semi-combined molds are respectively communicated with and are respectively provided with separated pouring pipes, and the two groups of chips are fixedly sleeved outside the liquid-distributing pipe.
In the above technical scheme, further, hang and lift the mechanism and install at the inside top of hydraulic support frame second pneumatic cylinder including the symmetry, two the equal fixed mounting of second pneumatic cylinder flexible end has the crossbearer, two sets of one side upper surface that the crossbearer is close to each other is connected with the mounting bracket jointly, two guide arms are interlude in hydraulic support frame, mounting bracket, the inside mutual slip of two sets of crossbearers, two the guide arm bottom is connected with hydraulic hand claw upper surface.
In the above technical scheme, further, the die closing mechanism comprises a first hydraulic cylinder fixedly installed inside one end of the machine base, and the telescopic end of the first hydraulic cylinder is connected with the outer wall of the semi-die closing die at the corresponding position.
In the above technical scheme, further, slide rail mechanism is including rotating the screw rod of installing inside U-shaped frame, U-shaped frame one end outer wall fixed mounting has servo motor, servo motor output is connected with the one end of screw rod, screw thread fit between slide and the screw rod, slide bottom and the laminating of U-shaped frame internal surface slip.
In the above technical scheme, further, the supporting shoe has been extended to slide one side outer wall, fixed mounting has the cylinder on the supporting shoe, the flexible end of cylinder is connected with L shape holder lower surface, surface mounting has a bottom chamber on the frame, the outside activity in bottom chamber has cup jointed the wheel hub die body, hydraulic pressure hand claw centre gripping is in the outside of wheel hub die body.
In the above technical scheme, further, rotatory clear bits mechanism includes fixed mounting at the step motor of L shape holder lower surface, step motor output extends to L shape holder top and end connection has the axostylus axostyle, axostylus axostyle and along the outside belt pulley subassembly that cup joints jointly of liquid pipe are connected.
In the above technical scheme, further, in order that the outside fixed ring canal that has cup jointed of liquid pipe, the intake pipe is installed to the inside one end intercommunication of ring canal, in order that the outside below of liquid pipe has fixedly cup jointed the ring shell, circular slide has been seted up to the inside ring shell, just many rotatory milling heads are installed to the inboard bottom of ring shell, the inside both sides intercommunication of ring canal is installed the gas blow pipe, and two gas blow pipe one end extends to the ring shell bottom.
In the above technical scheme, further, two sets of cooling chamber has all been seted up to the inside half mould that closes of semi-close, two sets of the equal mount in one side that half mould kept away from each other is equipped with the cooling box, the feed liquor pipe is installed to the inside top intercommunication of cooling box, two sets of the inside and equal intercommunication of cooling chamber department of half mould installs the fluid-discharge tube that is close to, feed liquor pipe one end intercommunication is installed and is inserted the pipe, inside one side of cooling box is linked together with the cooling chamber inside through the connecting pipe that the intercommunication was installed, the inside one end sealed slip laminating of cooling box has the closing plate, closing plate outer wall one side fixed mounting has the piston rod, the inside one end intercommunication of cooling box is installed a piston section of thick bamboo, piston rod slidable mounting is inside a piston section of thick bamboo, the one end fixed mounting that the cooling box was kept away from to the piston rod, one side outer wall fixed mounting that the cylinder was kept away from to the slide has the horizontal frame, the gliding spout of adaptation slide bar has been seted up respectively to horizontal frame inside both sides.
The application method of the casting forming device for the large-tonnage mining vehicle rim comprises the following steps:
S1, driving two groups of semi-closed molds to move in opposite directions along a limiting rod through a first hydraulic cylinder until the two groups of semi-closed molds are closed to form a complete rim cavity, then starting a servo motor to drive a screw rod to rotate, driving a sliding seat, an L-shaped clamping frame, a blanking hopper and a liquid-following pipe which are arranged on the sliding seat to move along the inside of the U-shaped frame, accurately positioning the lower end of the liquid-following pipe at the inlet of a spliced pouring pipe of the two groups of semi-closed molds, and completing pouring preparation;
s2, injecting molten steel from a blanking hopper, entering a closed cavity through a liquid-following pipe and a pouring pipe, enabling a transverse frame fixed on a sliding seat to convert linear motion of the sliding seat into reciprocating motion of the sliding rod through cooperation of a sliding groove formed in the sliding seat and the sliding rod, enabling the sliding rod to drive a sealing plate to reciprocate in a cooling box through a piston rod, sucking forced cooling liquid from the liquid-feeding pipe, pumping the forced cooling liquid into a cooling cavity through a connecting pipe, and discharging the forced cooling liquid from a liquid-discharging pipe, so that efficient forced circulation cooling of half-and-half die assembly is realized;
And S3, after the casting is cooled and shaped, the first hydraulic cylinder drives the two groups of semi-closed molds to separate, then the second hydraulic cylinder drives the transverse frame and the guide rod to descend, so that the hydraulic claws clamp and lift the molded hub mold body, the molded hub mold body is transported, meanwhile, the stepping motor drives the liquid-following pipe and the rotary milling head at the bottom of the liquid-following pipe to rotate at a high speed through the belt pulley assembly, scraps are removed from the inner wall of the casting pipe, and residues are purged through a blowing pipe by compressed inert gas introduced through the air inlet pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. Meanwhile, the cylinder can drive the L-shaped clamping frame to slide up and down, adjust the inclined height of the liquid-flowing tube, adapt to the demands of the pouring tubes of different specification rims, ensure the molten steel to enter the cavity at a stable flow speed and direction, reduce the problems of vortex, gas coiling and the like, promote the internal density of rim castings, and reduce the incidence rate of defects such as air holes, cold insulation and the like.
2. The device realizes automatic cleaning of the pouring pipe through the rotary chip cleaning mechanism, the stepping motor drives the liquid-following pipe and the rotary milling head to synchronously rotate through the transmission component, the rotary milling head can actively scrape hard residues such as steel slag, oxide skin and the like remained at the pouring pipe to avoid high-intensity labor of manual cleaning, meanwhile, the annular pipe is matched with the air blowing pipe to guide compressed inert gas into the pouring pipe, so that fine residues generated by milling are thoroughly purged, and the smooth and clean and residue-free pouring pipe is ensured. Not only promote several times with clear bits efficiency, can also avoid artifical clearance to the damage of pouring tube inner wall, extension pouring tube life reduces the foundry goods slag inclusion defect because of the residue leads to.
3. The device promotes half die closing cooling effect by a wide margin through linkage forced cooling structure, and the slide removes the in-process, and the horizontal frame promotes slide bar reciprocating motion through the spout, drives piston rod and closing plate and slides in the cooling box, forms and forces to inhale the flowing back action, and the coolant liquid is inhaled the cooling box from the feed liquor pipe, pumps half die closing's cooling chamber fast through the connecting pipe again, discharges from the fluid-discharge tube after fully absorbing die cavity heat, realizes the high-efficient circulation of coolant liquid. The forced cooling mode is realized by means of pouring positioning action linkage without an additional power source, so that the cooling efficiency is improved, the solidification speed of molten steel is accelerated, the internal structure of the rim casting is ensured to be uniform and compact, the problems of coarse grains and reduced mechanical property caused by slow cooling are avoided, and the strength and impact resistance toughness of the rim are enabled to meet the bearing requirement of a large-tonnage mining vehicle.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is another angular schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the connection structure among the cooling box, the semi-mold and the machine base of the invention;
FIG. 4 is a schematic view of the working state of the semi-closed die casting hub die body according to the invention;
FIG. 5 is a schematic view of the structure of the present invention in a separated state of two sets of semi-mold assemblies;
FIG. 6 is a schematic view of the internal connection between the cooling cartridge and the cooling chamber of the present invention;
FIG. 7 is a schematic view of the overall structure of the rotary chip removing mechanism of the present invention;
FIG. 8 is a schematic view of the split connection structure between the grommet and the shell according to the present invention.
In the figure, 1, a machine seat, 2, a hydraulic support frame, 3, a mounting rack, 4, a first hydraulic cylinder, 5, a hydraulic claw, 6, a transverse frame, 7, an L-shaped clamping frame, 8, a lower hopper, 9, a second hydraulic cylinder, 10, a sliding seat, 11, a servo motor, 12, a U-shaped frame, 13, a screw rod, 14, a sliding rod, 15, a transverse frame, 16, a guide rod, 17, a half-clamping frame, 18, a cooling box, 19, a liquid discharge pipe, 20, a liquid inlet pipe, 21, a limiting rod, 22, an access pipe, 23, a sliding chute, 24, a bottom cavity, 25, a hub die body, 26, a pouring pipe, 27, a piston rod, 28, a connecting pipe, 29, a sealing plate, 30, a piston cylinder, 31, a cooling cavity, 32, a cylinder, a ring pipe, 34, a ring shell, 35, a stepping motor, 36, a belt pulley assembly, 37, a shaft rod, 38, a liquid-guiding pipe, 39, an air inlet pipe, 40, a blowing pipe, 41 and a rotary milling head.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than as described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.
The casting forming device for the large-tonnage mining vehicle rim shown in fig. 1-8 comprises a machine base 1, a hydraulic support frame 2, a lifting mechanism, a hydraulic claw 5, two groups of half-mold clamping frames 17 and a sliding rail mechanism, wherein the hydraulic support frame 2 is vertically arranged on one side of the upper surface of the machine base 1, the lifting mechanism is arranged above the inner part of the hydraulic support frame 2, two ends of the inner part of the machine base 1 are connected with two corresponding groups of half-mold clamping frames 17 through symmetrically arranged mold clamping mechanisms, limiting rods 21 are symmetrically and fixedly inserted on two sides of the inner part of the machine base 1, the two groups of half-mold clamping frames 17 are jointly sleeved outside the two limiting rods 21 in a sliding manner, a U-shaped frame 12 is fixedly arranged on one side of the outer wall of the machine base 1, the sliding rail mechanism is arranged inside the U-shaped frame 12, a sliding seat 10 is arranged outside the sliding rail mechanism, an L-shaped clamping frame 7 is slidingly arranged above the inner part of the sliding seat 10, one end of the L-shaped clamping frame 7 far away from the sliding seat 10 is rotatably provided with a casting pipe 38, a lower hopper 8 is arranged on the upper side Fang Liantong of the casting pipe 38, one side of the inner sides of the two groups of half-mold clamping frames 17 is respectively communicated with and is fixedly sleeved with a separated casting pipe 26, and a rotary cleaning mechanism is fixedly sleeved outside the casting pipe 38;
in the embodiment, the device uses the machine base 1 as a base mounting platform, the hydraulic support frame 2 is vertically and fixedly arranged on one side of the machine base 1, and a lifting mechanism is arranged above the inside of the hydraulic support frame and used for realizing automatic fetching of formed castings. The two ends of the inside of the machine base 1 drive the two groups of half-mold-assembling 17 to realize opening and closing movements through symmetrically arranged mold-assembling mechanisms so as to form a complete rim casting cavity. In order to ensure the die assembly precision, limiting rods 21 are symmetrically fixed on two sides of the interior of the machine base 1, and two groups of half die assemblies 17 are sleeved at the limiting rods 21 in a sliding manner.
The lifting mechanism comprises second hydraulic cylinders 9 symmetrically arranged above the inside of the hydraulic support frame 2, transverse frames 6 are fixedly arranged at the telescopic ends of the two second hydraulic cylinders 9, a mounting frame 3 is connected to the upper surfaces of one sides, close to each other, of the two groups of transverse frames 6, two guide rods 16 are inserted in the inside of the hydraulic support frame 2, the mounting frame 3 and the two groups of transverse frames 6 in a sliding manner, the bottom ends of the two guide rods 16 are connected with the upper surface of the hydraulic paw 5, a bottom cavity 24 is arranged on the upper surface of the base 1, a hub die body 25 is movably sleeved outside the bottom cavity 24, and the hydraulic paw 5 is clamped outside the hub die body 25;
In this embodiment, the second hydraulic cylinder 9 drives the cross frame 6 and the mounting frame 3 to stably descend along the outside of the guide rod 16. The hydraulic gripper 5 connected to the bottom of the guide bar 16 is then lowered and positioned precisely outside the formed hub mould body 25. After the clamping action is performed by the hydraulic gripper 5, the second hydraulic cylinder 9 is retracted, lifting the casting off the bottom chamber 24 and transferring it. The guide rods 16 ensure the rigidity of the lifting process and avoid shaking.
The die assembly mechanism comprises a first hydraulic cylinder 4 fixedly arranged in one end of the base 1, and the telescopic end of the first hydraulic cylinder 4 is connected with the outer wall of a semi-die 17 at a corresponding position;
In this embodiment, the first hydraulic cylinder 4 is driven by extension and contraction to push the two sets of half-combined molds 17 to close, and when the two sets of half-combined molds 17 are closed tightly, and form a complete rim cavity together with the bottom cavity 24 for accommodating molten steel. The stop lever 21 ensures coaxiality and stability in the mold closing process and prevents the wrong mold.
The sliding rail mechanism comprises a screw rod 13 rotatably arranged in the U-shaped frame 12, a servo motor 11 is fixedly arranged on the outer wall of one end of the U-shaped frame 12, the output end of the servo motor 11 is connected with one end of the screw rod 13, a sliding seat 10 is in threaded fit with the screw rod 13, the bottom of the sliding seat 10 is in sliding fit with the inner surface of the U-shaped frame 12, a supporting block extends out of the outer wall of one side of the sliding seat 10, an air cylinder 32 is fixedly arranged on the upper surface of the supporting block, and the telescopic end of the air cylinder 32 is connected with the lower surface of the L-shaped clamping frame 7;
In the embodiment, the servo motor 11 is started, the driving screw 13 rotates in the U-shaped frame 12, and the sliding seat 10 in threaded fit with the screw 13 drives the whole pouring unit to horizontally move along the U-shaped frame 12 so as to realize the transverse positioning of the cast-in-situ pouring gate. At the same time, the cylinder 32 can drive the L-shaped clamping frame 7 to slide up and down in the slide seat 10, so as to adjust the vertical height of the liquid-guiding pipe 38. The cooperation of the two ensures that the lower end of the liquid-following pipe 38 can be accurately and stably butted at the inlet of the pouring pipe 26 of the half-mold 17 with different specifications.
The rotary chip removing mechanism comprises a stepping motor 35 fixedly arranged on the lower surface of the L-shaped clamping frame 7, the output end of the stepping motor 35 extends to the upper side of the L-shaped clamping frame 7, the end part of the stepping motor is connected with a shaft lever 37, the shaft lever 37 is connected with the outside of a liquid-flowing pipe 38 through a pulley assembly 36 which is sleeved together, a circular pipe 33 is fixedly sleeved outside the liquid-flowing pipe 38, one end inside the circular pipe 33 is communicated with an air inlet pipe 39, a ring shell 34 is fixedly sleeved outside the liquid-flowing pipe 38 below, a circular slideway is arranged inside the ring shell 34, a plurality of rotary milling heads 41 are arranged at the bottom of the inner side of the ring shell 34, two sides inside the circular pipe 33 are communicated with air blowing pipes 40, and one end of each of the two air blowing pipes 40 extends to the bottom of the ring shell 34;
in the embodiment, residues such as steel slag, oxide scale and the like attached to the pouring pipe 26 are automatically removed after the die is opened and before pouring;
When cleaning is required, the stepper motor 35 is started, and power is transmitted to the shaft 37 and the liquid-guiding pipe 38 through the belt pulley assembly 36, so that the shaft and the liquid-guiding pipe synchronously rotate. The rotary milling head 41 on the inner side of the ring shell 34 at the bottom of the down-flow tube 38 rotates at a high speed with the ring shell, and mechanically mills the end opening of the pouring tube 26 to scrape hard residues. Simultaneously, compressed inert gas is introduced into the annular pipe 33 from the air inlet pipe 39 and then is blown to the cleaning area through the air blowing pipe 40, so that the chips generated by milling are thoroughly blown and discharged, and the automation and the high efficiency of cleaning are realized.
The cooling cavity 31 is formed in the two groups of semi-closed molds 17, the cooling box 18 is fixedly arranged on one side, away from each other, of the two groups of semi-closed molds 17, the liquid inlet pipe 20 is installed above the inside of the cooling box 18 in a communicating manner, the liquid discharge pipe 19 is installed in the two groups of semi-closed molds 17 in a communicating manner and close to the cooling cavity 31, the access pipe 22 is installed at one end of the liquid inlet pipe 20 in a communicating manner, one side of the inside of the cooling box 18 is communicated with the inside of the cooling cavity 31 through the connecting pipe 28 installed in a communicating manner, one end of the inside of the cooling box 18 is hermetically and slidingly attached with the sealing plate 29, the piston rod 27 is fixedly installed at one side of the outer wall of the sealing plate 29, the piston cylinder 30 is installed at one end of the inside of the cooling box 18 in a communicating manner, the piston rod 27 is fixedly installed with the sliding rod 14 at one end, away from the cooling box 18, the sliding seat 10 is fixedly installed with the transverse frame 15 at one side of the outer wall, and two sides of the inside of the transverse frame 15 are respectively provided with the sliding grooves 23, which are matched with the sliding rod 14 in a sliding manner;
in the embodiment, the movement of the pouring mechanism is mainly utilized as a power source to drive the cooling liquid to forcedly circulate in the semi-closed die 17, so that efficient and uniform heat exchange is realized;
When the slide 10 moves toward the half die 17, the cross frame 15 moves together therewith. The sliding groove 23 inside the transverse frame 15 interacts with the sliding rod 14 fixed at the end of the piston rod 27 to convert the horizontal rectilinear motion of the slide 10 into the reciprocating motion of the piston rod 27. The piston rod 27 drives the sealing plate 29 to slide back and forth in the cooling box 18 to generate a pumping effect, when the sealing plate 29 pushes forward towards the inside of the cooling box 18, the cooling liquid rapidly flows in the liquid inlet pipe 20 until rapidly flowing into the cooling cavity 31 of the semi-closed mold 17 through the connecting pipe 28, heat outside the hub mold body 25 is rapidly absorbed, and the cooling liquid flowing at the moment is discharged from the liquid discharge pipe 19, so that a forced circulation cooling loop without external power is formed, and the cooling efficiency and uniformity are greatly improved;
The sliding groove 23 arranged in the transverse frame 15 aims at meeting the requirement that the sliding rod 14 moves along with the half die 17 when the two groups of half die 17 are separated.
It should be emphasized that the liquid inlet pipe 20 is communicated with an external cooling liquid delivery pump, the air inlet pipe 39 is communicated with an external inert gas delivery pump, and electromagnetic valves can be additionally arranged in the liquid inlet pipe 20 and the liquid outlet pipe 19, so that the effect of precision and controllability is achieved.
The application method of the casting forming device for the large-tonnage mining vehicle rim comprises the following steps:
S1, driving two groups of semi-closed molds 17 to move in opposite directions along a limiting rod 21 until the two groups of semi-closed molds are closed to form a complete rim cavity by a first hydraulic cylinder 4, then starting a servo motor 11 to drive a screw 13 to rotate, driving a sliding seat 10 and an L-shaped clamping frame 7, a blanking hopper 8 and a liquid-guiding pipe 38 which are arranged on the sliding seat to move along the inside of a U-shaped frame 12, and accurately positioning the lower end of the liquid-guiding pipe 38 at the inlet of a spliced pouring pipe 26 of the two groups of semi-closed molds 17 to finish pouring preparation;
S2, molten steel is injected from a blanking hopper 8, enters a closed cavity through a liquid-guiding pipe 38 and a pouring pipe 26, a transverse frame 15 fixed on a sliding seat 10 is matched with a sliding rod 14 through a sliding groove 23 formed in the sliding seat 10, the linear motion of the sliding seat 10 is converted into the reciprocating motion of the sliding rod 14, the sliding rod 14 drives a sealing plate 29 to reciprocate in a cooling box 18 through a piston rod 27, forced cooling liquid is sucked from a liquid inlet pipe 20, pumped into a cooling cavity 31 through a connecting pipe 28 and then discharged from a liquid discharge pipe 19, and efficient and forced circulation cooling of the semi-closed die 17 is realized;
S3, after the casting is cooled and shaped, the first hydraulic cylinder 4 drives the two groups of semi-combined dies 17 to separate, then the second hydraulic cylinder 9 drives the transverse frame 6 and the guide rod 16 to descend, so that the hydraulic claws 5 clamp and lift the molded hub die body 25 to transfer the molded hub die body, meanwhile, the stepping motor 35 drives the liquid-down pipe 38 and the rotary milling head 41 at the bottom of the liquid-down pipe to rotate at a high speed through the belt pulley assembly 36, scraps are removed from the inner wall of the pouring pipe 26, and compressed inert gas introduced through the air inlet pipe 39 sweeps the residues through the air blowing pipe 40.
The working principle is that two groups of first hydraulic cylinders 4 in the mold clamping mechanism respectively drive the half mold assemblies 17 at the corresponding sides to slide in opposite directions along a limiting rod 21 fixed in the machine base 1, the limiting rod 21 ensures that the sliding track of the half mold assemblies 17 is stable and free from offset, and finally the two groups of half mold assemblies 17 are tightly closed to form a closed cavity matched with the shape of a rim;
Simultaneously, the cylinder 32 on the lateral support block of the sliding seat 10 stretches and contracts, the height of the L-shaped clamping frame 7 is adjusted, the lower end of the liquid-following pipe 38 is accurately aligned with the inlet of the pouring pipe 26 at the joint of the two sets of semi-combined dies 17, and the channel butt joint before pouring is completed, so that molten steel is prevented from being scattered and biased during pouring;
The molten steel is poured into the blanking hopper 8 by an operator, the molten steel naturally flows along the liquid following pipe 38, the pouring pipe 26 after being butted enters the closed cavity of the semi-closed die 17 at a constant speed, the liquid following pipe 38 is in accurate butt joint with the pouring pipe 26, the molten steel is ensured to be filled at a stable flow speed, the vortex and gas rolling phenomena in the cavity are reduced, and the defect risks such as air holes, cold insulation and the like are reduced;
when the slide carriage 10 moves, the lateral fixed transverse frame 15 moves synchronously, the sliding groove 23 in the transverse frame 15 pushes the sliding rod 14, so that the sliding rod 14 drives the piston rod 27 to slide in the piston cylinder 30, and then the sealing plate 29 in the cooling box 18 is pulled to perform sealing movement;
After the pouring liquid feeding process is finished, the liquid following pipe 38 is lifted away from the pouring pipe 26 and is divided into three states, when the sealing plate 29 retreats along with the transverse frame 15, negative pressure is formed in the cooling box 18, cooling liquid enters through the liquid feeding pipe 20, when the sealing plate 29 advances, the pressure in the cooling box 18 is increased, the cooling liquid is forcedly pumped into the cooling cavity 31 in the semi-closed mold 17 through the connecting pipe 28, and after the cooling liquid fully absorbs heat released by molten steel in the cooling cavity 31, the cooling liquid is discharged from the liquid discharge pipe 19 at the side part of the semi-closed mold 17, so that forced circulation of entering, pressurizing, absorbing heat and discharging is formed. The process greatly improves the heat exchange efficiency, accelerates the solidification of molten steel, avoids the coarse grains and the mechanical property reduction of castings caused by slow cooling, and ensures that the rim strength and the impact resistance toughness meet the large-tonnage bearing requirement;
After the molten steel in the cavity is completely cooled and shaped, the first hydraulic cylinder 4 drives the two sets of semi-closed molds 17 to separate along the limiting rod 21 in a reverse direction, then the lifting mechanism is started, the two sets of second hydraulic cylinders 9 in the hydraulic support frame 2 are extended, the transverse frame 6 and the mounting frame 3 connected with the transverse frame are pushed to descend, the guide rods 16 between the mounting frame 3 and the hydraulic support frame 2 ensure stable descending track, finally the hydraulic claws 5 at the bottom ends of the guide rods 16 clamp the hub mold body 25, the second hydraulic cylinders 9 shrink to drive the forming rim to lift and transport the hub mold body 25, finally the self-cleaning link is entered, the liquid-following pipe 38 moves above the axis of the pouring pipe 26, the stepping motor 35 is started, the output end of the stepping motor drives the shaft rod 37 to rotate, the shaft 37 drives the liquid-following pipe 38 to rotate at a high speed through the belt pulley assembly 36, the plurality of rotary milling heads 41 at the inner side bottoms of the annular shell 34 fixed below the liquid-following pipe 38 synchronously rotate along with the liquid-following pipe 38, the residual steel slag, oxide skin and other hard residues at the edges of the pouring pipe 26 are scraped, meanwhile, the outer annular pipe 33 of the liquid-following pipe 38 is connected with compressed inert gas through the air inlet pipe 39 to drive the hub mold body 25, the gas is driven by the air pipe 40 to drive the forming rim mold body 25 to ascend and finally enter a self-cleaning link, the defect is avoided, and the phenomenon that the slag is thoroughly mixed when the slag is blown from the pouring pipe is completely, and the slag is blown down from the bottom to the bottom of the pouring pipe 26 when the slag is caused.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (4)
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| CN202511622181.6A CN121061134B (en) | 2025-11-07 | 2025-11-07 | Casting forming device and method for large-tonnage mining vehicle rim |
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| CN110883330A (en) * | 2019-11-29 | 2020-03-17 | 含山县天宇机械铸造厂 | Casting device for producing small castings |
| CN115283646A (en) * | 2022-07-11 | 2022-11-04 | 郑晓珊 | High-strength low-pressure casting device and method for automobile aluminum alloy castings |
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| FR2556993B1 (en) * | 1983-12-22 | 1986-09-19 | Somafer Sa | TOOL FOR CLEANING THE CASTING RIGOLES |
| JPH09300064A (en) * | 1996-05-15 | 1997-11-25 | Hitachi Metals Ltd | Method for automatically pouring molten metal |
| CN116618631A (en) * | 2023-05-25 | 2023-08-22 | 安徽省凤形新材料科技有限公司 | An automatic pouring device for wear-resistant ball casting |
| CN117086287A (en) * | 2023-09-26 | 2023-11-21 | 昆山市帮达轮毂模具制造有限公司 | A method of manufacturing large-size automotive aluminum alloy wheels |
| CN223264788U (en) * | 2024-09-30 | 2025-08-26 | 广州南电电气有限公司 | A casting equipment for producing cast bus duct |
| CN119489176A (en) * | 2025-01-15 | 2025-02-21 | 蓬莱三和铸造有限公司 | A casting device for a balanced suspension axle housing of a mine car |
| CN120790917A (en) * | 2025-07-29 | 2025-10-17 | 兴化市天泰合金制品科技有限公司 | Casting forming device for producing high-chromium cast iron wear-resistant material |
| CN120772516A (en) * | 2025-08-27 | 2025-10-14 | 湖南佳海电梯设备制造有限公司 | Sand casting forming device for nodular cast iron production |
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| CN110883330A (en) * | 2019-11-29 | 2020-03-17 | 含山县天宇机械铸造厂 | Casting device for producing small castings |
| CN115283646A (en) * | 2022-07-11 | 2022-11-04 | 郑晓珊 | High-strength low-pressure casting device and method for automobile aluminum alloy castings |
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