Pouring device for lost foam casting castings

Abstract

The invention relates to the technical field of evanescent mode casting, in particular to a pouring device for evanescent mode casting castings, which comprises an L-shaped frame and electric push rods symmetrically and rotatably connected to the inner side of the L-shaped frame, a barrel is rotatably connected between the ends of telescopic rods of the electric push rods, a swing frame is rotatably connected to the L-shaped frame, and the end of the swing frame is fixedly connected with the barrel. An electric push rod is firstly started to enable a sealing plate I to rotate by 90 degrees to stop sealing a three-way pipe I, a sealing plate II is further rotated by 90 degrees to seal a three-way pipe II, then a high-temperature metal solution in a barrel is discharged into a material guide pipe through the three-way pipe I, and a temperature sensor detects the temperature of the high-temperature metal solution through the material guide pipe; whenever the temperature of the high-temperature metal solution drops, the temperature sensor controls the electric heating wire to heat and preserve heat of the high-temperature metal solution so as to prevent the temperature drop of the high-temperature metal solution from influencing use, so that the casting forming quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lost foam casting, and particularly relates to a pouring device for lost foam casting castings. Background Art

[0002] In the field of casting technology, the lost foam casting technology, as an advanced casting process, has received extensive attention and application in recent years. During the lost foam casting process, the pouring device is a crucial link, and the quality of pouring is closely related to the quality of the castings being poured.

[0003] Chinese Patent with Publication No. CN106311981B discloses a pouring device for lost foam casting castings, including a vacuum box and a sand box. The sand box is placed inside the vacuum box. One side of the vacuum box is connected to a liquid storage tank, and the other side of the vacuum box is connected to a vacuum machine. Inside the sand box, there is a lost foam model with a refractory coating on the inner side and a pouring pipeline connected to the lost foam model. A liquid passing pipe is provided on the liquid storage tank, and the liquid storage tank is connected to the pouring pipeline through the liquid passing pipe; the liquid passing pipe includes an inner pipe, an outer pipe, and a rotating mechanism for the outer pipe to move up and down along the inner pipe. The inner pipe is threadedly connected to the outer pipe, and the outer pipe is connected to the rotating mechanism. The liquid inlet end of the inner pipe is fixedly connected to the liquid storage tank, and the liquid outlet end of the inner pipe extends into the pouring pipeline; liquid outlet holes are circumferentially provided at the lower part of the inner pipe, and the lower end of the inner pipe is closed. A sealing ring is provided between the outer pipe and the inner pipe. Although the above patent can discharge high-temperature molten metal into the lost foam mold, during the process of waiting for pouring, due to heat loss, the temperature of the high-temperature molten metal will drop, resulting in a high temperature of the molten iron at the initial pouring and a low temperature of the molten iron at the subsequent pouring, forming an obvious "temperature gradient" phenomenon, which easily affects the quality of casting forming.

[0004] The present invention aims to solve the problems existing in the above patent. Therefore, a pouring device for lost foam casting castings is proposed, which can keep the high-temperature molten metal warm to prevent the temperature of the high-temperature molten metal from dropping and improve the quality of casting forming. Summary of the Invention

[0005] In order to overcome the drawback that during the process of waiting for pouring, due to heat loss, the temperature of the high-temperature molten metal will drop, resulting in a high temperature of the molten iron at the initial pouring and a low temperature of the molten iron at the subsequent pouring, forming an obvious "temperature gradient" phenomenon, which easily affects the quality of casting forming, the present invention provides a pouring device for lost foam casting castings, which can keep the high-temperature molten metal warm to prevent the temperature of the high-temperature molten metal from dropping and improve the quality of casting forming.

[0006] The present invention is achieved through the following technical solutions: A pouring device for lost foam casting, comprising an L-shaped frame and an electric push rod symmetrically rotatably connected to the inner side of the L-shaped frame, a cylinder body is rotatably connected between the ends of the telescopic rods of the electric push rod, a swing frame is rotatably connected to the L-shaped frame, the end of the swing frame is fixedly connected to the cylinder body, a hollow tube is fixedly connected to the swing frame, a three-way pipe I connected to the cylinder body is connected to the hollow pipe, a three-way pipe II is connected to the hollow pipe, and a closing plate I symmetrically rotatably connected to the inner side of the three-way pipe I, a closing plate II symmetrically rotatably connected to the inner side of the three-way pipe II, and the end of the three-way pipe I is connected to the end of the three-way pipe II A material guide pipe located in the hollow tube is connected between them, and a heating wire is installed on the inner side of the hollow tube. The heating wire is used to heat the material guide pipe. The heated material guide pipe heats and keeps the high-temperature metal solution warm. Then the closing plate II controls the discharge of the high-temperature metal solution. A temperature sensor is fixedly connected to the top of the hollow tube. The temperature sensor and the heating wire are electrically connected through a control module. A driving component is arranged on the hollow tube for driving the closing plate I and the closing plate II to rotate. A filtering component is arranged between the cylinder and the three-way pipe I for filtering the slag in the metal solution.

[0007] To further explain, the driving assembly includes an n-shaped rod fixedly connected to the shaft of the closing plate II and the closing plate I, wherein a connecting spring is symmetrically connected between the n-shaped rod and the hollow tube on one side, a waist-shaped orifice plate is fixedly connected to the n-shaped rod on the other side, a cylinder is symmetrically fixedly connected to the top of the hollow tube, the telescopic rod end of the cylinder is fixedly connected to the waist-shaped orifice plate, a sliding frame in contact with the n-shaped rod is symmetrically slidably connected to the hollow tube, and the sliding frame is fixedly connected to the waist-shaped orifice plate.

[0008] Further explanation, the filtering component includes a receiving hopper fixedly connected to the inner circumference of the cylinder body, an L-shaped tube fixedly connected to the receiving hopper, a three-way porous tube fixedly connected to the L-shaped tube, the end of the three-way porous tube is connected to the end of the three-way tube I, which is used to filter the slag in the high-temperature metal solution, a single-hole plate is slidably connected to the inside of the L-shaped tube, which is used to control the discharge end of the L-shaped tube, and the top of the single-hole plate is evenly spaced with tooth grooves II, and the L-shaped tube is rotatably connected with a gear shaft meshing with tooth grooves II, a double-opening plate is slidably connected to the inside of the receiving hopper, which is used to control the feed end of the L-shaped tube, and the top of the double-opening plate is evenly spaced with tooth grooves I, an electric rotating shaft is installed on the receiving hopper, the electric rotating shaft and the gear shaft are connected by a synchronous belt assembly, a spur gear meshing with tooth grooves I is fixedly mounted on the electric rotating shaft, and a scraping assembly is provided on the L-shaped tube to scrape and transport the slag on the outer wall of the three-way porous tube.

[0009] Further explanation, the scraping assembly includes a spiral scraper symmetrically connected to the inner side of the L-shaped tube, the spiral scraper contacts the outer wall of the three-way porous tube, and is used to scrape and transport the slag on the outer wall of the three-way porous tube. A driving motor is symmetrically installed on the L-shaped tube, and the output shaft end of the driving motor is fixedly connected to the spiral scraper.

[0010] Further description, the pouring device for lost foam casting castings further includes a dust suction component. The dust suction component includes a feeding hopper fixedly connected to the L-shaped frame. The discharging end of the three-way pipe II is located inside the feeding hopper. A closed cover is fixedly connected to the feeding hopper to block the gas generated during the gasification of the lost mold. An annular suction pipe is fixedly inserted through the circumferential direction of the closed cover to suck away the gas generated during the gasification of the lost mold. A suction pump is installed on the L-shaped frame, and the suction end of the suction pump is connected to the annular suction pipe. A sealing component is arranged on the closed cover to improve the sealing performance between the closed cover and the dry sand in the sand box.

[0011] Further description, the dust suction component further includes a wire brush connected to the feeding end of the feeding hopper. The wire brush contacts the outer wall of the three-way pipe II to seal the inside of the feeding hopper.

[0012] Further description, the sealing component includes guide rods slidably inserted through the circumferential direction of the closed cover at equal intervals. A contact ring is fixedly connected between the ends of the guide rods. A return spring sleeved on the guide rod is evenly spaced and connected between the contact ring and the closed cover. A corrugated cover is connected between the contact ring and the closed cover.

[0013] Further description, the pouring device for lost foam casting castings further includes control valves symmetrically and rotatably connected to the three-way pipe II to control the flow rate of the high-temperature molten metal. Stepping motors are symmetrically installed on the three-way pipe II, and the end of the output shaft of the stepping motor is fixedly connected to the end of the control valve.

[0014] The beneficial effects of the present invention are as follows: 1. By first starting the electric push rod, the closing plate I rotates 90 degrees in reverse to stop closing the three-way pipe I, and the closing plate II also rotates 90 degrees in reverse to close the three-way pipe II. Subsequently, the high-temperature molten metal in the cylinder is discharged into the guiding pipe through the three-way pipe I. The temperature sensor detects the temperature of the high-temperature molten metal through the guiding pipe. Whenever the temperature of the high-temperature molten metal drops, the temperature sensor controls the heating wire to heat and keep warm the high-temperature molten metal to prevent the temperature drop of the high-temperature molten metal from affecting the use, thereby improving the quality of casting forming.

[0015] 2. Under the action of the three-way porous pipe and the spiral scraper, whenever the high-temperature molten metal contacts the three-way porous pipe, the three-way porous pipe can filter the slag in the high-temperature molten metal, and the spiral scraper can scrape off the slag, preventing the attachment of slag on the three-way porous pipe from affecting the subsequent use effect, thereby ensuring the use effect of the three-way porous pipe.

[0016] 3. Under the action of the closed cover and the annular suction pipe, the closed cover can block the gas generated by the heat gasification of the lost mold, and the annular suction pipe sucks away and purifies the blocked gas, preventing the gas generated by the heat gasification from affecting the working environment, thereby ensuring a good working environment. Description of the Drawings

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the first tee and the second tee of the present invention.

[0019] Figure 3 This is a three-dimensional structural schematic diagram of the first closing plate and the second closing plate of the present invention.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the filter assembly of the present invention.

[0021] Figure 5 This is a sectional structural schematic diagram of the L-shaped pipe of the present invention.

[0022] Figure 6 This is a three-dimensional structural schematic diagram of the gear shaft of the present invention.

[0023] Figure 7 This is a three-dimensional structural schematic diagram of the double-opening plate and the single-hole plate of the present invention.

[0024] Figure 8 This is a three-dimensional structural schematic diagram of the dust suction assembly of the present invention.

[0025] Figure 9 This is a sectional structural schematic diagram of the blanking hopper and the closed cover of the present invention.

[0026] Figure 10 This is a three-dimensional structural schematic diagram of the control valve and the stepping motor of the present invention.

[0027] The meanings of the reference numerals in the figure: 1: L-shaped frame, 2: electric push rod, 3: cylinder body, 4: swing frame, 5: hollow pipe, 6: first tee, 7: second tee, 8: first closing plate, 9: second closing plate, 10: material guiding pipe, 11: heating wire, 12: temperature sensor, 13: n-shaped rod, 131: connecting spring, 132: sliding frame, 133: kidney-shaped hole plate, 134: cylinder, 14: receiving hopper, 141: L-shaped pipe, 142: three-way multi-hole pipe, 143: double-opening plate, 144: electric rotating shaft, 145: spur gear, 146: spiral scraping plate, 147: driving motor, 148: tooth groove I, 149: single-hole plate, 1410: tooth groove II, 1411: gear shaft, 15: blanking hopper, 151: closed cover, 152: annular suction pipe, 153: air extraction pump, 154: guide rod, 155: contact ring, 156: corrugated cover, 157: return spring, 158: wire brush, 16: control valve, 17: stepping motor. Detailed implementation manners

[0028] The following are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly.

[0029] Embodiment: A pouring device for a lost foam casting casting. Please refer to Figures 1 - 7 As shown in the figure, it includes an L-shaped frame 1 and electric push rods 2 that are symmetrically rotatably connected to the upper right side inside the L-shaped frame 1 in the front and back. A cylinder 3 is rotatably connected between the end parts of the telescopic rods of the electric push rods 2 on both the front and back sides. The cylinder 3 can be used to place high-temperature metal solution. A swing frame 4 is rotatably connected to the lower part of the L-shaped frame 1. The right end of the swing frame 4 is fixedly connected to the lower left side outside the cylinder 3. A hollow tube 5 is horizontally fixedly connected to the lower part of the swing frame 4. A three-way pipe I 6 is connected to the right side of the hollow tube 5. The right end of the three-way pipe I 6 is connected to the lower left side of the cylinder 3. A three-way pipe II 7 is connected to the left side of the hollow tube 5. The three-way pipe II 7 can be used to discharge the high-temperature metal solution. It also includes a closing plate I 8, a closing plate II 9, a feeding pipe 10, a heating wire 11, a temperature sensor 12, a driving component, and a filtering component. Closing plates I 8 are symmetrically rotatably connected to the inside of the three-way pipe I 6 in the front and back. Closing plates II 9 are symmetrically rotatably connected to the inside of the three-way pipe II 7 in the front and back. Feeding pipes 10 are connected between the two ends on the left side of the three-way pipe I 6 and the two ends on the right side of the three-way pipe II 7 respectively. The feeding pipes 10 are located inside the hollow tube 5. A heating wire 11 is installed inside the hollow tube 5. The heating wire 11 is used to heat the feeding pipes 10. The heated feeding pipes 10 heat and keep warm the high-temperature metal solution. Then, the closing plate II 9 controls the discharge of the high-temperature metal solution. A temperature sensor 12 is fixedly inserted through the middle of the top of the hollow tube 5. The temperature sensor 12 is electrically connected to the heating wire 11 through a control module. A driving component is arranged on the hollow tube 5. When the driving component operates, the driving component can drive the closing plate I 8 and the closing plate II 9 to rotate, so that the closing plate I 8 and the closing plate II 9 open and close. A filtering component is arranged between the cylinder 3 and the three-way pipe I 6. When the filtering component operates, the filtering component can filter the slag in the metal solution.

[0030] Please refer to Figure 3 As shown in the figure, the driving component includes an n-shaped rod 13, a connecting spring 131, a sliding frame 132, a kidney-shaped hole plate 133, and a cylinder 134. N-shaped rods 13 are fixedly connected to the shaft parts of the closing plates II 9 and the closing plate I 8 on both the front and back sides. Connecting springs 131 are symmetrically connected between the upper part of the left n-shaped rod 13 and the upper left side of the hollow tube 5. A kidney-shaped hole plate 133 is fixedly connected to the upper part of the right n-shaped rod 13. Cylinders 134 are symmetrically fixedly connected to the upper right side of the top of the hollow tube 5. The end parts of the telescopic rods of the cylinders 134 on both the front and back sides are respectively fixedly connected to the lower left side of the kidney-shaped hole plates 133 on both the front and back sides. Sliding frames 132 are symmetrically slidably connected to the outer top of the hollow tube 5. The left side of the sliding frame 132 contacts the left n-shaped rod 13. The right side of the sliding frame 132 is fixedly connected to the bottom of the kidney-shaped hole plate 133.

[0031] Please refer to Figures 4 - 7As shown, the filtering assembly includes a receiving hopper 14, an L-shaped tube 141, a three-way porous tube 142, a double-opening plate 143, an electric rotating shaft 144, a spur gear 145, a scraping assembly, a single-hole plate 149 and a gear shaft 1411. The lower inner part of the cylinder 3 is fixedly connected with the receiving hopper 14 along the circumferential direction, the bottom of the receiving hopper 14 is fixedly connected with the L-shaped tube 141, and the upper part of the L-shaped tube 141 is fixedly connected with a three-way porous tube 142. The left end of the three-way porous tube 142 is connected to the right end of the three-way tube Ⅰ6. The three-way porous tube 142 can realize the high-temperature metal The slag in the solution is filtered, a single-hole plate 149 is slidably connected to the upper inner side of the L-shaped tube 141, and the single-hole plate 149 can control the discharge end of the L-shaped tube 141. Tooth grooves II 1410 are evenly spaced on the right side of the top of the single-hole plate 149. A gear shaft 1411 is rotatably connected to the middle of the L-shaped tube 141, and the gear shaft 1411 is meshed with the tooth groove II 1410. A double-opening plate 143 is slidably connected to the lower inner side of the receiving hopper 14, and the double-opening plate 143 can control the feed end of the L-shaped tube 141. The double-opening plate 143 can control the feed end of the L-shaped tube 141. The right side of the top of the mouth plate 143 is evenly spaced with tooth grooves Ⅰ148, and the lower right side of the receiving hopper 14 is equipped with an electric shaft 144, and the right side of the electric shaft 144 is connected to the right side of the gear shaft 1411 through a synchronous belt assembly. The left side of the electric shaft 144 is fixedly sleeved with a spur gear 145, and the spur gear 145 is meshed with the tooth grooves Ⅰ148. A scraping assembly is provided on the L-shaped tube 141. When the scraping assembly is in operation, the scraping assembly can scrape and transport the slag on the outer wall of the three-way porous tube 142; the scraping assembly includes A spiral scraper 146 and a drive motor 147 are symmetrically installed front and back on the inner upper part of the L-shaped tube 141, and the spiral scraper 146 is connected to the outer wall of the three-way porous tube 142. When the spiral scraper 146 rotates, the spiral scraper 146 can scrape and transport the slag on the outer wall of the three-way porous tube 142. A drive motor 147 is symmetrically installed front and back on the upper right side of the outer surface of the L-shaped tube 141, and the output shaft ends of the drive motors 147 on the front and rear sides are fixedly connected to the right sides of the spiral scrapers 146 on the front and rear sides respectively.

[0032] Initially, the closing plate I 8 closes the inside of the tee pipe I 6, the closing plate II 9 is in a state of not closing the tee pipe II 7, the double-opening plate 143 closes the feeding end on the front side of the L-shaped pipe 141, and the single-hole plate 149 closes the discharging end on the rear side of the L-shaped pipe 141. First, install the L-shaped frame 1 on the crane's trolley rail, pour the high-temperature metal solution into the cylinder body 3, the high-temperature metal in the cylinder body 3 is discharged into the receiving hopper 14, and the high-temperature metal solution in the receiving hopper 14 drops through the double-opening plate 143 into the channel on the rear side of the L-shaped pipe 141 and contacts the rear side of the tee multi-hole pipe 142. The rear side of the tee multi-hole pipe 142 filters the slag in the high-temperature metal solution. The high-temperature metal solution after filtering the slag is discharged into the tee multi-hole pipe 142, and the high-temperature metal solution in the tee multi-hole pipe 142 is discharged into the tee pipe I 6 and blocked by the closing plate I 8. When an appropriate amount of high-temperature metal solution is contained in the cylinder body 3, stop pouring the high-temperature metal solution into the cylinder body 3, and then start the air cylinder 134. The telescopic rod of the air cylinder 134 shortens and drives the waist-shaped orifice plate 133 to move leftward. The waist-shaped orifice plate 133 moving leftward drives the sliding frame 132 to move leftward. The sliding frame 132 moving leftward pushes the left n-shaped rod 13 to swing leftward, and the connecting spring 131 is stretched. The left n-shaped rod 13 swinging leftward drives the closing plate II 9 to reverse 90 degrees. The closing plate II 9 reversing 90 degrees closes the inside of the tee pipe II 7. At the same time, the waist-shaped orifice plate 133 moving leftward drives the right n-shaped rod 13 to swing leftward. The right n-shaped rod 13 swinging leftward drives the closing plate I 8 to reverse 90 degrees. The closing plate I 8 reversing 90 degrees stops closing the tee pipe I 6, and the high-temperature metal solution then discharges into the guiding pipe 10 through the tee pipe I 6. The high-temperature metal solution causes the temperature of the guiding pipe 10 to rise. Part of the high-temperature metal solution in the guiding pipe 10 discharges into the tee pipe II 7 and is blocked by the closing plate II 9. Then start the temperature sensor 12 to detect the temperature of the guiding pipe 10. When the high-temperature metal solution shows a phenomenon of temperature drop, the high-temperature metal solution causes the temperature of the guiding pipe 10 to drop. When the temperature sensor 12 detects that the temperature of the guiding pipe 10 is lower than the standard value, the temperature sensor 12 controls the heating wire 11 to start through the control module. The heating wire 11 starting heats the guiding pipe 10, and the guiding pipe 10 then heats the high-temperature metal solution, causing the temperature of the high-temperature metal solution to rise to the standard value. When the temperature sensor 12 detects that the temperature of the guiding pipe 10 reaches the standard value, the temperature sensor 12 controls the heating wire 11 to turn off through the control module. The heating wire 11 stops heating the guiding pipe 10, and the guiding pipe 10 stops heating the high-temperature metal solution. Repeating like this, whenever the temperature of the high-temperature metal solution drops, the heating wire 11 also starts to heat the high-temperature metal solution through the guiding pipe 10, causing the temperature of the high-temperature metal solution to always be at the standard value, completing the heat preservation of the high-temperature metal solution to prevent the temperature drop of the high-temperature metal solution from affecting the use, thereby improving the quality of casting forming. Subsequently, control the crane to drive the L-shaped frame 1 to move. The L-shaped frame 1 drives the cylinder body 3 to move through the electric push rod 2. The cylinder body 3 drives the high-temperature metal solution to move.Meanwhile, the L-shaped frame 1 also drives the swing frame 4 to move. The swing frame 4 drives the material guiding pipe 10 to move. The material guiding pipe 10 drives the tee pipe II 7 to move. When the tee pipe II 7 moves to directly above the sand box and corresponds to the lost mold in the sand box, control the crane to stop driving the L-shaped frame 1 to move, and the tee pipe II 7 stops moving. Then the electric push rod 2 can be started. The telescopic rod of the electric push rod 2 shortens to drive the cylinder body 3 to swing upward. The cylinder body 3 drives the swing frame 4 to swing upward. The swing frame 4 drives the material guiding pipe 10 to swing upward to an inclined state. The material guiding pipe 10 drives the tee pipe II 7 to swing downward to an inclined state. Close the electric push rod 2, and then start one of the electric push rods 2. The telescopic rod of one of the electric push rods 2 extends to drive the corresponding kidney-shaped orifice plate 133 to move rightward to reset. The corresponding kidney-shaped orifice plate 133 moves rightward to drive the corresponding closing plate I 8 to rotate forward 90 degrees to reset through the right n-shaped rod 13. The closing plate I 8 resets to close one side of the channel of the tee pipe I 6. The high-temperature molten metal in the cylinder body 3 stops discharging into the material guiding pipe 10. At the same time, the reset kidney-shaped orifice plate 133 drives the corresponding sliding frame 132 to move rightward to reset. The sliding frame 132 resets to stop limiting the left corresponding n-shaped rod 13. Due to the action of the connecting spring 131, the left corresponding n-shaped rod 13 swings rightward to reset and drives the corresponding closing plate II 9 to rotate forward 90 degrees to reset. The corresponding closing plate II 9 resets to stop blocking the high-temperature molten metal in the corresponding material guiding pipe 10. The high-temperature molten metal in the corresponding material guiding pipe 10 then discharges into the tee pipe II 7. The high-temperature molten metal in the tee pipe II 7 discharges into the lost mold. When all the high-temperature solution in the corresponding material guiding pipe 10 is discharged, start the electric push rod 2 to drive the kidney-shaped orifice plate 133 to move leftward again, which also makes the corresponding closing plate I 8 rotate backward 90 degrees to stop closing the tee pipe II 7 and the corresponding closing plate II 9 rotate backward 90 degrees to close the tee pipe II 7. The high-temperature molten metal in the cylinder body 3 continues to discharge into the corresponding material guiding pipe 10 through the tee pipe II 7. At the same time, start the other electric push rod 2 to drive the corresponding kidney-shaped orifice plate 133 to move rightward to reset, which also makes the corresponding closing plate I 8 close the tee pipe I 6 and the corresponding closing plate II 9 stop closing the tee pipe II 7. The molten metal in the corresponding material guiding pipe 10 discharges into the lost mold through the tee pipe II 7. Repeating this process, the high-temperature molten metal at standard temperature can be continuously and alternately discharged into the lost mold for casting. When the lost mold is filled with an appropriate amount of high-temperature molten metal, the front and rear closing plates II 9 completely close the tee pipe II 7, and the high-temperature molten metal stops discharging. The high-temperature molten metal in the material guiding pipe 10 continues to be kept warm, while the discharged high-temperature molten metal causes the lost mold to be heated and vaporized to disappear, thereby obtaining a metal part with the same shape as the lost mold. Subsequently, start the electric push rod 2 to drive the cylinder body 3 to swing downward to reset. The cylinder body 3 drives the swing frame 4 to swing downward to reset. The swing frame 4 drives the material guiding pipe 10 to swing downward to reset. The material guiding pipe 10 drives the tee pipe II 7 to swing upward to reset. Control the crane to drive the L-shaped frame 1 to move back to the original position, and then take out the cast metal part from the sand box.By operating as described above, the pouring of the high-temperature metal solution can be continuously completed. When a large amount of slag adheres to the rear side of the three-way multi-hole pipe 142, start the reverse rotation of the electric rotating shaft 144. The reverse rotation of the electric rotating shaft 144 drives the reverse rotation of the spur gear 145. The reverse rotation of the spur gear 145 drives the double-opening plate 143 to move backward through the tooth groove Ⅰ 148. The backward movement of the double-opening plate 143 closes the feeding end at the rear side of the L-shaped pipe 141, and the backward movement of the double-opening plate 143 communicates with the feeding end at the front side of the L-shaped pipe 141. At the same time, the reverse rotation of the electric rotating shaft 144 drives the reverse rotation of the gear shaft 1411 through the synchronous belt assembly. The reverse rotation of the gear shaft 1411 drives the single-hole plate 149 to move backward through the tooth groove Ⅱ 1410. The backward movement of the single-hole plate 149 closes the discharging end at the front side of the L-shaped pipe 141, and the backward movement of the single-hole plate 149 also communicates with the discharging end at the rear side of the L-shaped pipe 141. At this time, the high-temperature metal solution is discharged into the channel at the front side of the L-shaped pipe 141 and filtered by the slag at the front side of the three-way multi-hole pipe 142. Then, the rear-side driving motor 147 can be started. The rear-side driving motor 147 drives the rear-side spiral scraper 146 to rotate. The rotation of the rear-side spiral scraper 146 scrapes the slag adhering to the rear side of the three-way multi-hole pipe 142, and the rotation of the rear-side spiral scraper 146 pushes the scraped slag to the right for transportation. When the slag moves to the position of the discharging end at the rear side of the L-shaped pipe 141, the slag is discharged and collected through the slag discharge at the rear side of the L-shaped pipe 141. Similarly, when a large amount of slag adheres to the front side of the three-way multi-hole pipe 142, start the forward rotation of the electric rotating shaft 144 to make the double-opening plate 143 and the single-hole plate 149 move forward to reset. Start the front-side driving motor 147 to make the front-side spiral scraper 146 rotate to scrape and discharge the slag adhering to the front side of the three-way multi-hole pipe 142. In this way, it is possible to prevent the slag from adhering to the three-way multi-hole pipe 142 and affecting the subsequent use effect, thereby ensuring the use effect of the three-way multi-hole pipe 142. When all the high-temperature metal slag in the cylinder 3 is used up, turn off the temperature sensor 12, and then the subsequent processing of the cast metal parts can be carried out.,

[0033] Please refer to Figure 8 and Figure 9As shown, the pouring device for lost foam casting castings further includes a dust suction component installed on the L-shaped frame 1. The dust suction component includes a feeding hopper 15, a closed cover 151, an annular suction pipe 152, an air extraction pump 153, a sealing component and a wire brush 158. The bottom of the L-shaped frame 1 is fixedly connected with the feeding hopper 15. The discharging end of the three-way pipe II 7 is located inside the feeding hopper 15. The lower part of the outer side of the feeding hopper 15 is fixedly connected with the closed cover 151. The closed cover 151 can block the gas generated during the gasification of the lost mold. The upper part of the closed cover 151 is fixedly penetrated with the annular suction pipe 152 along the circumference. The annular suction pipe 152 can extract the gas generated during the gasification of the lost mold. The air extraction pump 153 is installed at the lower part of the L-shaped frame 1. The air extraction end of the air extraction pump 153 is connected with the annular suction pipe 152. A sealing component is arranged at the lower part of the closed cover 151. The sealing component can improve the sealing performance between the closed cover 151 and the dry sand in the sand box. The feeding end of the feeding hopper 15 is connected with a wire brush 158. The wire brush 158 contacts the outer wall of the three-way pipe II 7. The wire brush 158 can seal the inside of the feeding hopper 15. The sealing component includes a guide rod 154, a contact ring 155, a corrugated cover 156 and a return spring 157. Four guide rods 154 are slidably penetrated along the circumference at the lower part of the closed cover 151. A contact ring 155 is fixedly connected between the bottom ends of the four guide rods 154. Four return springs 157 are evenly spaced and connected between the top of the contact ring 155 and the bottom of the closed cover 151. The return spring 157 is sleeved on the guide rod 154. A corrugated cover 156 is connected between the top of the contact ring 155 and the bottom of the closed cover 151.

[0034] Initially, the air extraction pump 153 is externally connected to a purification device. When the L-shaped frame 1 moves, the L-shaped frame 1 drives the hopper 15 to move, the hopper 15 drives the closed cover 151 to move, and the movement of the closed cover 151 drives the contact ring 155 to move through the guide rod 154, so that the contact ring 155 moves into contact with the dry sand in the sand box, and the hopper 15 is located directly above the expendable mold. Then, control the crane to drive the L-shaped frame 1 to move downward. The downward movement of the L-shaped frame 1 drives the hopper 15 to move downward, the hopper 15 drives the closed cover 151 to move downward, the downward movement of the closed cover 151 compresses the return spring 157, and the downward movement of the closed cover 151 also compresses the corrugated cover 156. Control the crane to stop driving the L-shaped frame 1 to continue moving downward. At this time, the force generated by the compression of the return spring 157 can make the contact ring 155 closely contact the dry sand, thereby improving the sealing between the closed cover 151 and the dry sand. When the three-way pipe II 7 swings downward to an inclined state, the three-way pipe II 7 slides on the wire brush 158. Then, when the high-temperature molten metal is discharged through the three-way pipe II 7, the high-temperature molten metal is discharged into the hopper 15. The high-temperature molten metal is discharged into the expendable mold through the hopper 15, and the high-temperature molten metal causes the expendable mold to be vaporized and disappear due to heat. The gas generated during the vaporization and disappearance process floats into the closed cover 151 through the corrugated cover 156. Then, the air extraction pump 153 can be started. The air extraction pump 153 extracts the gas in the closed cover 151 through the annular extraction pipe 152, and the extracted gas is discharged into the purification device by the air extraction pump 153 for purification. The wire brush 158 can seal the inside of the hopper 15 to reduce the escape of gas. When an appropriate amount of high-temperature molten metal is discharged into the expendable mold, the three-way pipe II 7 stops discharging the high-temperature molten metal, the three-way pipe II 7 swings upward to reset, and the air extraction pump 153 is turned off. Subsequently, control the crane to drive the L-shaped frame 1 to move upward. The upward movement of the L-shaped frame 1 drives the hopper 15 to move upward, the hopper 15 drives the closed cover 151 to move upward. The upward movement of the closed cover 151 first causes the return spring 157 and the corrugated cover 156 to stretch and reset. Subsequently, the closed cover 151 drives the contact ring 155 to move upward and reset through the return spring 157, and the contact ring 155 moves upward and resets to separate from the dry sand. In this way, the gas generated by heat vaporization can be prevented from affecting the working environment of the station, thus ensuring a good working environment.

[0035] Please refer to Figure 10 As shown, the pouring device for lost foam casting of castings further includes a control valve 16 and a stepping motor 17. The control valves 16 are symmetrically rotatably connected to the front and rear sides of the right side of the three-way pipe II 7. The control valve 16 can control the flow rate of the high-temperature molten metal. The stepping motors 17 are symmetrically installed on the front and rear sides of the bottom right side of the three-way pipe II 7. The output shaft ends of the front and rear stepping motors 17 are respectively fixedly connected to the bottom ends of the front and rear control valves 16.

[0036] When it is necessary to discharge the high-temperature metal solution, first start the stepping motor 17. The stepping motor 17 drives the control valve 16 to rotate. The rotation of the control valve 16 adjusts the flow rate of the high-temperature metal solution discharged from the three-way pipe II 7. When the flow rate of the high-temperature metal solution is adjusted to the required flow rate, turn off the stepping motor 17, and the control valve 16 stops rotating. Then, when the high-temperature metal solution is discharged into the three-way pipe II 7, the three-way pipe II 7 discharges the high-temperature metal solution through the control valve 16. In this way, it is more convenient to adjust the flow rate of the high-temperature metal solution.

[0037] The above embodiments are only preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A pouring device for lost foam casting castings, comprising an L-shaped frame (1) and electric push rods (2) symmetrically and rotatably connected to the inner side of the L-shaped frame (1). A cylinder body (3) is rotatably connected between the end parts of the telescopic rods of the electric push rods (2). A swing frame (4) is rotatably connected to the L-shaped frame (1), and the end part of the swing frame (4) is fixedly connected to the cylinder body (3). A hollow pipe (5) is fixedly connected to the swing frame (4). A tee pipe I (6) connected to the cylinder body (3) is connected to the hollow pipe (5), and a tee pipe II (7) is connected to the hollow pipe (5). It is characterized in that, The invention also comprises a closing plate I (8) symmetrically rotatably connected to the inner side of the three-way pipe I (6); a closing plate II (9) symmetrically rotatably connected to the inner side of the three-way pipe II (7); a material guide pipe (10) located in the hollow pipe (5) is connected between the end of the three-way pipe I (6) and the end of the three-way pipe II (7); a heating wire (11) is installed inside the hollow pipe (5); the heating wire (11) is used to heat the material guide pipe (10); the heated material guide pipe (10) heats and keeps the high-temperature metal solution warm; then the closing plate II (9) controls the discharge of the high-temperature metal solution; a temperature sensor (12) is fixedly connected to the top of the hollow pipe (5); the temperature sensor (12) and the heating wire (11) are electrically connected through a control module; a driving component is arranged on the hollow pipe (5) for driving the closing plate I (8) and the closing plate II (9) to rotate; a filtering component is arranged between the cylinder (3) and the three-way pipe I (6) for filtering the slag in the metal solution.

2. The gating device for lost foam casting of castings according to claim 1, characterized in that, The driving assembly comprises an n-shaped rod (13) fixedly connected to the shaft of the closing plate II (9) and the closing plate I (8), wherein a connecting spring (131) is symmetrically connected between the n-shaped rod (13) and the hollow tube (5) on one side, a waist-shaped orifice plate (133) is fixedly connected to the n-shaped rod (13) on the other side, a cylinder (134) is symmetrically fixedly connected to the top of the hollow tube (5), the telescopic rod end of the cylinder (134) is fixedly connected to the waist-shaped orifice plate (133), a sliding frame (132) in contact with the n-shaped rod (13) is symmetrically slidably connected to the hollow tube (5), and the sliding frame (132) is fixedly connected to the waist-shaped orifice plate (133).

3. The pouring device for lost foam casting castings according to claim 2, characterized in that, The filtering assembly comprises a receiving hopper (14) fixedly connected to the inner circumference of the cylinder (3), an L-shaped tube (141) fixedly connected to the receiving hopper (14), a three-way multi-hole tube (142) fixedly connected to the L-shaped tube (141), an end of the three-way multi-hole tube (142) connected to the end of the three-way tube I (6) for filtering slag in the high-temperature metal solution, a single-hole plate (149) slidably connected to the inner side of the L-shaped tube (141) for controlling the discharge end of the L-shaped tube (141), tooth grooves II (1410) evenly spaced on the top of the single-hole plate (149), and a rotatable connection on the L-shaped tube (141) meshing with the tooth grooves II (1410) The receiving hopper (14) is provided with a gear shaft (1411), a double-opening plate (143) is slidably connected to the inner side of the receiving hopper (14) for controlling the feeding end of the L-shaped tube (141), and tooth grooves I (148) are evenly spaced on the top of the double-opening plate (143). An electric rotating shaft (144) is installed on the receiving hopper (14), and the electric rotating shaft (144) and the gear shaft (1411) are connected by a synchronous belt assembly. A spur gear (145) meshing with the tooth groove I (148) is fixedly mounted on the electric rotating shaft (144), and a scraping assembly is provided on the L-shaped tube (141) for scraping and conveying slag on the outer wall of the three-way porous tube (142).

4. A pouring device for lost foam casting castings according to claim 3, characterized in that, The scraping component includes a spiral scraper (146) symmetrically and rotatably connected to the inner side of the L-shaped pipe (141). The spiral scraper (146) contacts the outer wall of the three-way porous pipe (142) and is used to scrape and convey the slag on the outer wall of the three-way porous pipe (142). Driving motors (147) are symmetrically installed on the L-shaped pipe (141), and the end of the output shaft of the driving motor (147) is fixedly connected to the spiral scraper (146).

5. A pouring device for a lost foam casting casting according to claim 4, characterized in that, The pouring device for lost foam casting castings further includes a dust suction component. The dust suction component includes a feeding hopper (15) fixedly connected to the L-shaped frame (1). The discharging end of the three-way pipe II (7) is located inside the feeding hopper (15). A closed cover (151) is fixedly connected to the feeding hopper (15) and is used to block the gas generated during the gasification of the lost mold. An annular suction pipe (152) is fixedly and circumferentially penetrated through the closed cover (151) and is used to suck away the gas generated during the gasification of the lost mold. An air extraction pump (153) is installed on the L-shaped frame (1), and the air extraction end of the air extraction pump (153) is connected to the annular suction pipe (152). A sealing component is arranged on the closed cover (151) and is used to improve the sealing performance between the closed cover (151) and the dry sand in the sand box.

6. A pouring device for lost foam casting castings according to claim 5, characterized in that, The dust suction component further includes a wire brush (158) connected to the feeding end of the feeding hopper (15). The wire brush (158) contacts the outer wall of the three-way pipe II (7) and is used to seal the inside of the feeding hopper (15).

7. A pouring device for lost foam casting castings according to claim 6, characterized in that, The sealing component includes guide rods (154) slidably and circumferentially penetrated through the closed cover (151) at uniform intervals. A contact ring (155) is fixedly connected between the ends of the guide rods (154). A reset spring (157) sleeved on the guide rod (154) is uniformly and spacedly connected between the contact ring (155) and the closed cover (151). A corrugated cover (156) is connected between the contact ring (155) and the closed cover (151).

8. A pouring device for a lost foam casting casting according to claim 7, characterized in that, The pouring device for lost foam casting castings further includes a control valve (16) symmetrically and rotatably connected to the three-way pipe II (7) and is used to control the flow rate of the high-temperature molten metal. Stepping motors (17) are symmetrically installed on the three-way pipe II (7), and the end of the output shaft of the stepping motor (17) is fixedly connected to the end of the control valve (16).

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