Casting method of automobile chassis support

Abstract

The invention relates to a casting method of an automobile chassis support, which relates to the technical field of automobile metal casting, and comprises the following steps: S1, material preparation: selecting proper casting materials, such as zinc alloy, aluminum alloy and magnesium alloy, according to the design requirements and performance requirements of the automobile chassis support, then cutting the selected materials into particles with proper sizes, after cutting is completed, a granular metal material is obtained; s2, melting equipment is conducted, specifically, the cut granular metal material is poured into an electric furnace to be heated, the heating temperature is kept at 720-830 DEG C, heat preservation stirring is conducted for 30 min, it is ensured that the metal material is evenly heated and completely melted, and casting molten metal is obtained after melting is completed; and S3, casting equipment is adopted, the casting metal liquid is put into the casting equipment, the casting speed of the metal liquid is controlled, and it is ensured that the casting mold can be stably and evenly filled with the metal liquid. The device has the effect that the casting injection speed of the molten metal is automatically adjusted according to different casting molten metal materials, and the casting quality of automobile chassis supports made of different materials can be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of automobile metal casting, and in particular to a casting method for an automobile chassis bracket. Background Art

[0002] The automobile chassis bracket is an important part of the automobile chassis. It connects the transmission system, running system, steering system and braking system of the automobile, supports the entire automobile structure and ensures its stable operation. The chassis bracket is usually made of high-strength steel to withstand various stresses and loads. In the automobile design process, the stiffness, strength and stability of the chassis bracket are very important considerations to ensure that the car can run safely and stably under various road conditions.

[0003] The application range of automobile chassis brackets is very wide. Zinc alloy, aluminum alloy and magnesium alloy can be selected to process automobile chassis brackets according to the specific needs of the car, cost budget and production conditions. Because automobile chassis brackets made of different materials have unique advantages and application scenarios, when processing automobile chassis brackets, it is usually necessary to use a casting device to cast the molten metal of the bracket. When the casting device processes automobile chassis brackets made of different materials, it is usually necessary to use different casting and injection speeds to ensure the quality of automobile chassis bracket production.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the current casting device is not convenient for automatically adjusting the injection speed of molten metal casting according to the different materials of the casting molten metal, so that the injection speed is consistent when the casting device processes automobile chassis brackets of different materials, which will cause a series of problems. Because zinc alloy, aluminum alloy and magnesium alloy have different physical and chemical properties, the requirements for the injection speed of the casting molten metal are also different. Too fast injection speed of zinc alloy will lead to traces of air flow, foam and internal defects, too slow injection speed will lead to insufficient filling or loose structure of the casting, improper injection speed of aluminum alloy will lead to prolonged solidification time of aluminum alloy, and produce defects such as bubbles and shrinkage cavities, too fast injection speed of magnesium alloy will make the casting structure look loose and porous, too slow injection speed will lead to the breakage and falling of dendritic dendrites, and the quality of casting of automobile chassis brackets of different materials cannot be guaranteed. It is inconvenient to use and cannot meet the actual casting needs of automobile chassis brackets. Summary of the invention

[0005] In order to solve the problem that the current casting device is not convenient to automatically adjust the injection speed of molten metal casting according to the different casting molten metal materials, so that the injection speed is consistent when the casting device processes automobile chassis brackets of different materials, which will cause a series of problems, the present application provides a casting method for an automobile chassis bracket.

[0006] The present application provides a method for casting a chassis bracket of an automobile using the following technical solution: A casting method for an automobile chassis bracket comprises the following steps: S1. Material preparation: according to the design requirements and performance requirements of the automobile chassis bracket, select suitable casting materials, such as zinc alloy, aluminum alloy and magnesium alloy, and then cut the selected materials into particles of appropriate size to obtain granular metal materials; S2. Melting equipment, pour the cut granular metal material into the electric furnace for heating, keep the heating temperature at 720-830°C and stir for 30 minutes to ensure that the metal material is evenly heated and completely melted, and obtain the casting metal liquid after melting; S3. A casting device is provided to pour the casting molten metal into the casting device, and the pouring speed of the molten metal is controlled to ensure that the molten metal can smoothly and evenly fill the casting mold. After the molten metal is poured, the casting is completely cooled and solidified, and the mold is opened and the casting is removed to obtain the automobile chassis bracket; In step S3, it is necessary to control the pouring speed of the pouring equipment on the molten metal according to the different molten metal materials, and the pouring equipment includes a fixed base, a quantitative box, a detection box and a shot tube arranged on the fixed base; The fixed base is provided with a mold assembly for shaping the molten metal, the quantitative box is provided with a quantitative assembly for quantifying the molten metal, the detection box is provided with a detection assembly for weight detection of the molten metal, and the injection tube is provided with an injection assembly for injecting the molten metal; The quantitative assembly includes a quantitative plate movably arranged in the quantitative box and a lifting member for lifting the quantitative plate; The detection assembly includes a weight plate movably arranged inside the detection box, a telescopic hose fixed on the weight plate, a positioning member for positioning the weight plate, and an opening and closing member for timing opening and closing the telescopic hose; The injection assembly includes an injection block and a cutting plate movably arranged inside the injection tube, a threaded rod rotatably arranged inside the injection tube, a pushing member for pushing the injection block, a speed regulating member for adjusting the rotation speed of the threaded rod, an adjusting member for adjusting the lifting and lowering of the cutting plate, and a limiting member and a resetting member for limiting and resetting the speed regulating member, and the speed regulating member, the resetting member and the adjusting member are all driven by a weight plate; The mold assembly includes an upper mold and a lower mold arranged on a fixed base, a clamping member for clamping the upper mold and the lower mold, an exhaust member for exhausting the upper mold and the lower mold, and a detection member for detecting the exhaust volume, and the exhaust member is driven by a pushing member.

[0007] By adopting the above technical scheme, the molten metal that needs to be processed into the automobile chassis bracket can be quantified through the quantitative component, and the amount of the molten metal can be controlled to avoid excessive or insufficient pouring of the molten metal and causing defects to the automobile chassis bracket cast in the subsequent order, so as to ensure the quality of the appearance casting of the automobile chassis bracket. The alloy material of the molten metal can be detected through the detection component, and it can be determined whether the molten metal is a zinc alloy, an aluminum alloy or a magnesium alloy. The molten metal can be subjected to injection treatment through the injection component, and the metal can be hydraulically injected into the upper mold and the lower mold. At the same time, the speed of the injection component to hydraulically inject the metal can be controlled according to the material of the molten metal of the zinc alloy, the aluminum alloy or the magnesium alloy. The injection component can control the injection component to push the molten metal at the optimal injection speed according to the material of the molten metal, so as to ensure the casting effect of the upper mold and the lower mold on the molten metal of the specified material, and the molten metal is cast by the mold component; Under the same volume, zinc alloy is the heaviest, followed by aluminum alloy, and magnesium alloy is the lightest. Therefore, when the casting device processes the same model of automobile chassis bracket, in order to avoid the metal liquid causing stamping damage to the casting mold during pouring, when zinc alloy is used to process the automobile chassis bracket, in order to ensure the surface finish and internal quality of the bracket, a slower injection speed needs to be selected. When aluminum alloy automobile chassis bracket is used, in order to avoid defects such as pores and shrinkage holes inside the bracket, a moderate injection speed needs to be selected. When magnesium alloy automobile chassis bracket is used, in order to make the metal liquid fill the entire cavity before solidification, a relatively fast injection speed needs to be selected. Therefore, when metal liquids of different materials are used to process the same model of automobile chassis bracket, it is usually necessary to adjust the injection speed of the metal liquid so that the casting mold can ensure the casting quality of the automobile chassis bracket when processing automobile chassis brackets of various different materials; The opening and closing parts can be used to put a certain amount of molten metal into the injection tube, the speed regulating parts can be used to adjust the speed of the injection assembly to the metal liquid injection, the limit parts can be used to limit the speed changing parts to avoid the deviation of the speed changing parts when driving the pushing parts, the timing opening and closing of the injection tube can be realized by the adjusting parts, the molten metal in the injection tube can be pushed into the lower mold and the upper mold for casting by the pushing parts, the lower mold and the upper mold can be stably fixed together by the clamping parts to avoid the phenomenon of the lower mold and the upper mold falling off and deviating when casting the automobile chassis bracket, and the lower mold and the upper mold can be separated and disassembled at the same time, and the cast automobile chassis bracket can be quickly demolded, the gas in the lower mold and the upper mold can be discharged by the exhaust parts, and the exhaust treatment is performed while the molten metal is injected into the lower mold and the upper mold, the speed regulating parts can be adjusted to the initial state by the reset parts after the molten metal is pushed, and the amount of gas discharged from the lower mold and the upper mold can be detected by the detection parts to achieve the effect of reminder.

[0008] Optionally, the lifting member includes a transmission cylinder fixed on the quantitative box, a connecting pipe and an intelligent switch, a first solenoid valve fixed on the connecting pipe, a driving motor fixed on the transmission cylinder, and a spiral blade rotatably arranged in the transmission cylinder, the spiral blade is fixedly connected to the output end of the driving motor, the transmission cylinder and the connecting pipe are both connected to the quantitative box, the driving motor and the first solenoid valve are electrically connected to the intelligent switch, and the quantitative plate is movably fitted with the intelligent switch.

[0009] By adopting the above technical scheme, the driving motor can drive the spiral blade to rotate and transfer the molten metal to the quantitative box. When the molten metal is continuously added to the quantitative box, it will drive the quantitative plate to move upward. When the quantitative plate continues to move upward and fits with the intelligent switch and is triggered, the driving motor turns off the first solenoid valve and opens, stopping the spiral blade from continuing to transfer the molten metal to the quantitative box. The molten metal in the quantitative box can be placed in the detection box through the connecting pipe. This method can be used to quantify the molten metal, and a specified amount of molten metal can be taken according to the model and size of the automobile chassis bracket to be processed, so as to avoid defects in the automobile chassis bracket in the subsequent casting process caused by taking too much or too little molten metal, thereby ensuring the effect of the casting process of the automobile chassis bracket.

[0010] Optionally, the opening and closing component includes a baffle plate movably arranged on the telescopic hose, a connecting rod fixed on the baffle plate, a compression spring fixed on the quantitative plate, a limiting arc block fixed on the compression spring, a movable block movably arranged on the quantitative box, an annular spring fixed on the movable block, and a second spring and a limiting plate fixed on the quantitative box. The number of the baffle plate, connecting rod, compression spring, limiting arc block, movable block, annular spring, second spring and limiting plate is two, the two baffle plates are movably fitted together, the two limiting arc blocks and the two connecting rods are movably fitted together with the two movable blocks, and the two second springs are fixedly connected to the two connecting rods, respectively.

[0011] When the molten metal is fully loaded, the two stoppers will move to the bottom of the container and the two stoppers will move to the bottom of the container, and the molten metal will be pulled back and forth to move relative to the two stoppers.

[0012] Optionally, the pushing member includes a pushing frame fixed on the injection block and a partition plate fixed in the injection tube, the pushing frame is threadedly connected to the threaded rod, a sliding hole is opened on the inner side of the partition plate, and the pushing frame is slidably connected to the sliding hole.

[0013] By adopting the above technical solution, after the speed of the speed regulating part is adjusted, the pushing part can be driven to push the molten metal. When the threaded rod rotates, the pushing frame and the injection block can be driven to move in turn, and the molten metal in the injection tube can be injection-treated. The molten metal can be injected into the upper mold and the lower mold at a specified speed to complete the casting process of the molten metal.

[0014] Optionally, the reset member includes a limit frame fixed on the fixed base, a fifth spring fixed on the limit frame, an elastic block fixed on the fifth spring, a sixth spring fixed on the limit frame, a limit bent rod fixed on the sixth spring, a support block movably arranged on the injection tube, a ninth spring fixed on the support block, an eighth spring fixed on the injection block and an elastic arc block fixed on the eighth spring, three conical grooves are opened on the elastic block, the three conical grooves are selectively engaged with the limit bent rod, the limit bent rod and the elastic arc block are both movably fitted with the support block, and the ninth spring is fixedly connected to the injection tube.

[0015] By adopting the above technical scheme, when the shot block moves, it will also drive the eighth spring and the elastic arc block to move in turn. When the shot block pushes all the molten metal into the upper mold and the lower mold, the shot block will fit correspondingly with the support block. The elastic force of the eighth spring can push the elastic arc block to move, and push the support block to compress the ninth spring. When the support block moves, it can push the limit bent rod to move, so that the limit bent rod is separated from the elastic block, and the elastic block loses its limit. The strong elasticity of the two fifth springs can drive the elastic block, the U-shaped frame, the speed lever, the primary speed gear, the intermediate speed gear and the high-speed gear to move to the left in turn, and then the primary speed gear, the intermediate speed gear and the high-speed gear can be moved to the initial state, so that the high-speed gear is meshed with the third transmission gear, so as to facilitate the next speed adjustment and shot of the molten metal.

[0016] Optionally, the speed regulating component includes a U-shaped frame fixed on the elastic block, a shift lever rotatably arranged on the U-shaped frame, a primary speed gear, an intermediate speed gear and a high speed gear fixed on the shift lever, a driving rod rotatably arranged on the limit frame, a first transmission gear, a second transmission gear and a third transmission gear fixed on the driving rod, an electric motor fixed on the limit frame, a movable rack fixed on the U-shaped frame, a first gear, a first one-way gear, a second gear and a second one-way gear rotatably arranged on the detection box, and a first rack and a second rack fixed on the weight plate, wherein the first gear and the second gear The wheels are all meshed with a movable rack, the first rack is movably meshed with the first one-way gear, the second rack is movably meshed with the second one-way gear, the primary speed change gear is movably meshed with the first transmission gear, the intermediate speed change gear is movably meshed with the second transmission gear, and the high-speed change gear is movably meshed with the third transmission gear, the driving rod is fixedly connected to the output end of the motor, the first one-way gear is coaxially fixed with the first gear, the second gear is coaxially fixed with the second one-way gear, a one-way reverse check bearing is arranged on the inner side of the first one-way gear, and a one-way forward check bearing is arranged on the inner side of the second one-way gear.

[0017] By adopting the above technical solution, the weight plate can automatically drive the speed regulating part when it moves due to the weight of the molten metal. When the molten metal on the weight plate is magnesium alloy, the weight plate will move to the two arc-shaped slots on the top for positioning. At this time, the high-speed gear is meshed with the third transmission gear. When the molten metal on the weight plate is aluminum alloy, the weight plate will gradually move from the two arc-shaped slots on the top to the two arc-shaped slots in the middle for positioning. At the same time, when the weight plate moves downward, it will also drive the first rack and the second rack to move downward. The first rack will gradually mesh with the first one-way gear, which can drive the first one-way gear and the first gear to rotate clockwise in turn, and will drive the movable rack, U-shaped frame, speed lever, primary speed gear, intermediate speed gear, high speed gear, etc. in turn. The primary speed gear and the elastic block move to the left, so that the intermediate speed gear is meshed with the second transmission gear. When the molten metal on the weight plate is zinc alloy, the weight plate will gradually move from the two arc-shaped slots in the middle to the two arc-shaped slots in the lower part for positioning, and the second rack will gradually mesh with the second one-way gear, which can drive the second one-way gear and the second gear to rotate counterclockwise in turn, and will drive the movable rack, U-shaped frame, speed lever, primary speed gear, intermediate speed gear, senior speed gear and elastic block to move to the right in turn, so that the primary speed gear is meshed with the first transmission gear. The injection speed of the specified molten metal can be adjusted according to the material of the molten metal according to the switching movement of the senior speed gear, the intermediate speed gear and the primary speed gear.

[0018] Optionally, the positioning member includes a telescopic spring fixed to the inner side of the weight plate, an arc-shaped block fixed on the telescopic spring, and a plurality of first springs fixed on the weight plate, the number of the telescopic spring and the number of the arc-shaped block are both two, the left and right side walls of the detection box are provided with arc-shaped slots, the number of the arc-shaped slots is two groups, the number of the arc-shaped slots in each group is three, the two groups of arc-shaped slots are respectively connected to one of the two arc-shaped blocks, the weight plate and the injection tube are both connected to the telescopic hose, the outside of the telescopic hose is fixedly installed with a first one-way valve, and the plurality of first springs are fixedly connected to the detection box.

[0019] By adopting the above technical scheme, the weight plate can automatically drive the positioning part when it moves due to the weight of the molten metal. When the weight plate moves, it will drive the two telescopic springs to drive the two arc-shaped blocks to move. When the weight plate is made of magnesium alloy, the two arc-shaped blocks can be pushed to the two arc-shaped slots at the top by the elastic force of the two telescopic springs to limit the weight plate. When the weight plate is made of aluminum alloy, the two arc-shaped blocks can be pushed to the two arc-shaped slots in the middle by the elastic force of the two telescopic springs to limit the weight plate. When the weight plate is made of zinc alloy, the two arc-shaped blocks can be pushed to the two arc-shaped slots at the bottom by the elastic force of the two telescopic springs to limit the weight plate, thereby preventing the weight plate from moving randomly during positioning.

[0020] Optionally, the adjusting member includes a cutting plate movably provided on the injection tube, a connecting rope fixed on the cutting plate, a connecting block movably provided on the detection box, and a fourth spring and a fixed pulley fixed on the connecting block, one end of the connecting rope is fixedly connected to the detection box, the fourth spring is fixedly connected to the detection box, the arc-shaped clamping block on the right side is movably fitted with the connecting block, the connecting rope is movably connected to the fixed pulley, a cutting hole is provided on the injection tube, and the cutting plate is slidably connected to the cutting hole.

[0021] By adopting the above technical scheme, the adjusting part can be driven in a timely manner through the movement of the weight plate. When the weight plate drives the arc-shaped clamping block to separate from the connecting block, the elastic force of the fourth spring can drive the connecting block and the fixed pulley to move. When the fixed pulley moves, it will drive the connecting rope and the opening plate to move downward in turn, so as to seal the outlet of the injection tube. When the weight plate drives the arc-shaped clamping block to fit with the connecting block, the elastic force of the telescopic spring can push the arc-shaped clamping block to move, push the connecting block to compress the fourth spring, and move the fixed pulley to pull the connecting rope, thereby driving the opening plate to move upward, and opening the outlet of the injection tube, so as to facilitate the flow of the molten metal in the injection tube into the upper mold and the lower mold.

[0022] Optionally, the exhaust component includes a vacuum cylinder and a connecting pipe fixed on the upper mold, a second one-way valve fixed on the connecting pipe, an outlet pipe fixed on the vacuum cylinder, a third one-way valve fixed on the outlet pipe, a one-way bevel gear rotatably arranged on the injection tube, a transmission bevel gear and a movable disc, and a piston block and a crank movably arranged on the vacuum cylinder, the one-way bevel gear is fixed to the outside of the threaded rod, the one-way bevel gear is meshed with the transmission bevel gear, the movable disc is coaxially fixed with the transmission bevel gear, the movable disc and the piston block are both movably hinged to the crank, and a one-way bearing is arranged on the inner side of the one-way bevel gear.

[0023] By adopting the above technical scheme, the pushing member will automatically drive the exhaust member when pushing the injection block to move, and the threaded rod will also drive the one-way bevel gear, the transmission bevel gear and the movable disc to rotate in sequence when rotating. Through the connection and cooperation between the movable disc, the crank and the piston block, the movable disc can drive the piston block to move left and right in the vacuum cylinder when rotating, and the gas in the upper mold and the lower mold can be drawn into the detection block through the connecting pipe, the vacuum cylinder and the air outlet pipe in sequence, so as to avoid the metal liquid being squeezed by the gas when being pressed into the upper mold and the lower mold. When the pushing member completely draws the metal liquid into the upper mold and the lower mold, the gas in the upper mold and the lower mold will also be completely drawn into the detection block to complete the vacuum processing.

[0024] Optionally, the detection component includes a detection block fixed on the upper mold, two third springs fixed on the detection block, a movable curved block movably arranged on the detection block, a speaker and a control switch fixed on the vacuum cylinder, a fixed tube fixed on the detection block, and a second solenoid valve fixed on the fixed tube, the speaker and the control switch are movably fitted with the movable curved block, the two third springs are fixedly connected to the movable curved block, and the motor and the second solenoid valve are electrically connected to the control switch.

[0025] By adopting the above technical solution, the exhaust part will automatically drive the detection part when it discharges the gas in the upper mold and the lower mold. When the gas continues to enter the detection block, it will push the active curved block to move, so that the two third springs are in a compressed state. When the active curved block gradually moves, it will fit with the speaker and the control switch to trigger. The speaker can remind the staff that the molten metal has been completely drawn into the upper mold and the lower mold. The control switch will trigger the second solenoid valve to open, and then all the gas in the detection block can be released through the fixed tube. At the same time, it will also trigger the motor drive to move the injection block to the starting position for the next processing step.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The molten metal liquid can be poured into the transmission cylinder through the feeding pipe, and the metal liquid can be quantitatively measured through the lifting parts. The specified amount of metal liquid can be taken according to the size of the automobile chassis bracket to be processed, so as to avoid taking too much or too little metal liquid and causing defects in the subsequent casting of the automobile chassis bracket, ensure the effect of the casting processing of the automobile chassis bracket, and achieve the purpose of quantitative casting of the automobile chassis bracket metal liquid; 2. When the molten metal flows into the detection box, it will fall on the weight plate. As the molten metal gradually increases, the multiple first springs will gradually be in a compressed state. At the same time, the adjusting member will be driven to seal the outlet of the injection tube to prevent the subsequent molten metal from flowing into the injection tube. The molten metal immediately flows into the upper and lower molds to ensure the effect of subsequent metal liquid injection. The material of the molten metal can be detected when the weight plate is driven downward by the weight of the molten metal. When the two arc-shaped blocks correspond to the two arc-shaped slots at the top respectively, the positioning member can limit the weight plate. If the weight plate does not continue to move downward, it is said that It indicates that the material of the molten metal is magnesium alloy. When the two arc-shaped blocks correspond to the two arc-shaped slots in the middle respectively, the positioning piece can limit the weight plate. If the weight plate does not continue to move downward, it indicates that the material of the molten metal is aluminum alloy. When the two arc-shaped blocks correspond to the two arc-shaped slots at the bottom respectively, the positioning piece can limit the weight plate. If the weight plate does not continue to move downward, it indicates that the material of the molten metal is zinc alloy. Because in the case of the same volume, the weight of zinc alloy is the heaviest, followed by aluminum alloy, and magnesium alloy is the lightest. Therefore, the material of the molten metal can be detected through the range of movement of the weight plate. 3. When the molten metal on the weight plate is magnesium alloy, the high-speed gear meshes with the third transmission gear. When the molten metal on the weight plate is aluminum alloy, the weight plate will move downward and will also drive the first rack and the second rack to move downward. The first rack will gradually mesh with the first one-way gear, which can drive the first one-way gear and the first gear to rotate clockwise in turn, which will drive the movable rack, U-shaped frame, shift lever, primary speed gear, intermediate speed gear, high-speed gear and elastic block to move to the left in turn, which will make the intermediate speed gear mesh with the second transmission gear. When the molten metal on the weight plate is zinc alloy, the first rack will separate from the first one-way gear, and the second rack will gradually mesh with the second one-way gear, which can drive the second one-way gear and the second gear in turn. The wheel rotates counterclockwise, which in turn drives the movable rack, U-shaped frame, speed lever, primary speed gear, intermediate speed gear, high-speed gear and elastic block to move rightward in sequence, causing the primary speed gear to mesh with the first transmission gear. The high-speed gear, intermediate speed gear and primary speed gear can be switched and moved. The injection speed of the specified molten metal can be adjusted according to the material of the molten metal. When the primary speed gear and the first transmission gear, the intermediate speed gear and the second transmission gear are meshed with the high-speed gear and the third transmission gear in sequence, they can be limited and fixed by the reset part and the limit part to ensure the meshing and speed change effect of the primary speed gear and the first transmission gear, the intermediate speed gear and the second transmission gear with the high-speed gear and the third transmission gear; 4. When all the molten metal in the quantitative box flows into the detection box, the quantitative plate will also move to the inner bottom wall of the quantitative box. The two limit arc blocks on the quantitative plate will correspond to the two movable blocks respectively. The elastic force of the two compression springs will drive the two movable blocks to move in opposite directions respectively, so that the two annular springs are stretched. When the two movable blocks move in opposite directions, they will drive the two connecting rods and the two baffle plates to move in opposite directions respectively, so that the two second springs are in a stretched state. The two baffle plates will separate to open the telescopic hose, and the molten metal on the gravity plate will flow into the injection tube through the telescopic hose. When the weight plate When all the molten metal on the injection tube flows into the injection tube through the telescopic hose, the weight plate loses the weight of the molten metal and the elastic force of the multiple first springs can bounce the weight plate to the original position. The weight plate will fit with the connecting block accordingly, and then drive the adjusting member to open the outlet of the injection tube, so that the molten metal in the injection tube can flow into the upper mold and the lower mold. When the primary speed change gear is engaged with the first transmission gear, the motor can sequentially drive the driving rod, the first transmission gear, the primary speed change gear, the speed change rod and the threaded rod to rotate, and then drive the pushing member to push the magnesium alloy molten metal in the injection tube. Rapid injection can make the magnesium alloy molten metal be injected into the upper mold and the lower mold at high speed to complete the casting process of the magnesium alloy molten metal. When the intermediate speed gear is meshed with the second transmission gear, the motor can sequentially drive the drive rod, the second transmission gear, the intermediate speed gear, the speed rod and the threaded rod to rotate, and then drive the pusher to inject the aluminum alloy molten metal in the injection tube at medium speed, so that the aluminum alloy molten metal can be injected into the upper mold and the lower mold at medium speed to complete the casting process of the aluminum alloy molten metal. When the high-speed gear is meshed with the third transmission gear, the motor can be used according to The driving rod, the third transmission gear, the high-speed gear, the gear lever and the threaded rod are driven to rotate, and then the pushing member is driven to perform low-speed injection of the zinc alloy molten metal in the injection tube, so that the zinc alloy molten metal can be injected into the upper mold and the lower mold at a low speed to complete the casting process of the zinc alloy molten metal. When the injection block pushes all the molten metal into the upper mold and the lower mold, the reset member is automatically triggered to move the primary speed gear, the intermediate speed gear and the high-speed gear to the initial state, so that the high-speed gear is meshed with the third transmission gear, so as to facilitate the next speed adjustment injection of the molten metal; 5. When the pusher is injecting the molten metal, it will automatically trigger the exhaust part to extract the gas in the upper mold and the lower mold to avoid the molten metal being squeezed by the gas when it is pressed into the upper mold and the lower mold, and try to avoid bubbles in the molten metal to ensure the effect of the molten metal casting process. Through the above method, when the injection block completely extracts the molten metal into the upper mold and the lower mold, it will also completely extract the gas in the upper mold and the lower mold into the detection block to complete the exhaust process. When the exhaust part is exhausting, the gas will gradually enter the detection block, which will push the active block to move, so that the two third springs are in a compressed state. When the active block gradually moves to the left, it will fit with the speaker and the control switch to trigger. The speaker can remind the staff that the molten metal has been completely extracted into the upper mold and the lower mold to ensure the time of the molten metal casting process. The control switch will trigger the second solenoid valve to open, and all the gas in the detection block can be released through the fixed pipe to facilitate the processing of the next process, and the next molten metal is injected to facilitate the cyclic casting process of the automobile chassis bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 A cross-sectional view of the connection structure of the detection box in the embodiment of the present application; Figure 3 A cross-sectional view of the connection structure of the quantitative box in the embodiment of the present application; Figure 4 A cross-sectional view of the injection tube connection structure in the embodiment of the present application; Figure 5 Embodiments of the present application Figure 1 Enlarged view of point A in the middle; Figure 6 Embodiments of the present application Figure 2 Enlarged view of J in the middle; Figure 7 Embodiments of the present application Figure 2 Enlarged view of point B in the middle; Figure 8 Embodiments of the present application Figure 2 Enlarged view of point E in the middle; Fig. 9 Embodiments of the present application Figure 4 Enlarged view of point D in the middle; Fig.10 Embodiments of the present application Figure 2 Enlarged view of point F in the middle; Fig.11 Embodiments of the present application Figure 4 Enlarged view of point H in the middle.

[0028] Figure numerals: 1, fixed base; 2, detection box; 3, quantitative box; 4, connecting pipe; 5, first solenoid valve; 6, transmission cylinder; 7, driving motor; 8, spiral blade; 9, feeding pipe; 10, intelligent switch; 11, quantitative plate; 12, compression spring; 13, limit arc block; 14, movable block; 15, annular spring; 16, second spring; 17, connecting rod; 18, material blocking plate; 19, first spring; 20, weight plate; 21, telescopic spring; 22, arc block; 23 , telescopic hose; 24, first non-return valve; 25, injection tube; 26, connecting block; 27, fourth spring; 28, fixed pulley; 29, connecting rope; 30, cutting plate; 31, electric push rod; 32, lower mold; 33, upper mold; 34, fixing screw frame; 35, threaded clamp block; 36, motor; 37, driving rod; 38, second transmission gear; 39, first transmission gear; 40, third transmission gear; 41, U-shaped frame; 42, speed lever; 43, intermediate speed gear; 44 , primary speed gear; 45, advanced speed gear; 46, threaded rod; 47, push frame; 48, injection block; 49, partition plate; 50, eighth spring; 51, elastic arc block; 52, support block; 53, ninth spring; 54, limit crank rod; 55, limit frame; 56, fifth spring; 57, elastic block; 58, sixth spring; 59, first rack; 60, one-way bevel gear; 61, transmission bevel gear; 62, movable disc; 63, second rack; 64, crank; 65, Piston block; 66, vacuum cylinder; 67, connecting pipe; 68, second one-way valve; 69, air outlet pipe; 70, third one-way valve; 71, detection block; 72, fixing pipe; 73, second solenoid valve; 74, movable curved block; 75, third spring; 76, loudspeaker; 77, control switch; 78, seventh spring; 79, positioning block; 80, intelligent controller; 81, first one-way gear; 82, first gear; 83, second gear; 84, second one-way gear; 85, movable rack. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-11 This application is described in further detail.

[0030] The present application embodiment discloses a casting method for a chassis bracket of an automobile, referring to Figure 1 and Figure 2 , including the following steps: S1. Material preparation: according to the design requirements and performance requirements of the automobile chassis bracket, select suitable casting materials, such as zinc alloy, aluminum alloy and magnesium alloy, and then cut the selected materials into particles of appropriate size to obtain granular metal materials; S2. Melting equipment, pour the cut granular metal material into the electric furnace for heating, keep the heating temperature at 720-830°C and stir for 30 minutes to ensure that the metal material is evenly heated and completely melted, and obtain the casting metal liquid after melting; S3. A casting device is provided to pour the casting molten metal into the casting device, and the pouring speed of the molten metal is controlled to ensure that the molten metal can smoothly and evenly fill the casting mold. After the molten metal is poured, the casting is completely cooled and solidified, and the mold is opened and the casting is removed to obtain the automobile chassis bracket; In step S3, it is necessary to control the pouring speed of the pouring equipment on the molten metal according to the different molten metal materials, and the pouring equipment includes a fixed base 1, a quantitative box 3 arranged on the fixed base 1, a detection box 2 and a shot tube 25; The fixed base 1 is provided with a mold assembly for shaping the molten metal, the quantitative box 3 is provided with a quantitative assembly for quantitatively measuring the molten metal, the detection box 2 is provided with a detection assembly for weight detection of the molten metal, and the injection tube 25 is provided with an injection assembly for injecting the molten metal; the quantitative assembly includes a quantitative plate 11 movably arranged in the quantitative box 3 and a lifting member for lifting the quantitative plate 11; the detection assembly includes a weight plate 20 movably arranged inside the detection box 2, a telescopic hose 23 fixed on the weight plate 20, a positioning member for positioning the weight plate 20, and an opening and closing member for timing opening and closing the telescopic hose 23; the injection assembly includes a The injection block 48 and the cutting plate 30 on the inner side of the tube 25, the threaded rod 46 rotatably arranged on the inner side of the injection tube 25, a pushing member for pushing the injection block 48, a speed regulating member for adjusting the rotation speed of the threaded rod 46, an adjusting member for adjusting the lifting and lowering of the cutting plate 30, and a limiting member and a resetting member for limiting and resetting the speed regulating member, the speed regulating member, the resetting member and the adjusting member are all driven by the weight plate 20; the mold assembly includes an upper mold 33 and a lower mold 32 arranged on a fixed base 1, a clamping member for clamping the upper mold 33 and the lower mold 32, an exhaust member for exhausting the upper mold 33 and the lower mold 32, and a detection member for detecting the exhaust volume, and the exhaust member is driven by a pushing member.

[0031] The lifting member includes a transmission cylinder 6 fixed on the quantitative box 3, a connecting pipe 4 and an intelligent switch 10, a first solenoid valve 5 fixed on the connecting pipe 4, a driving motor 7 fixed on the transmission cylinder 6, and a spiral blade 8 rotatably arranged in the transmission cylinder 6, wherein the spiral blade 8 is fixedly connected to the output end of the driving motor 7, the transmission cylinder 6 and the connecting pipe 4 are both connected to the quantitative box 3, the driving motor 7 and the first solenoid valve 5 are both electrically connected to the intelligent switch 10, the quantitative plate 11 is movably fitted with the intelligent switch 10, the top of the quantitative plate 11 is fixedly connected with two guide rods, the top of the quantitative box 3 is provided with two guide holes with the same diameter as the guide rods, the two guide rods are respectively slidably connected with the two guide holes, and the stability of the quantitative plate 11 moving up and down can be ensured by the two guide rods and the two guide holes, the transmission cylinder 6 is fixedly connected with a feed pipe 9 and a discharge pipe, and a control valve is fixedly installed on the outer side of the discharge pipe, when no feeding is needed, the discharge pipe can be opened by opening the control valve, and then the excess molten metal in the transmission cylinder 6 can be discharged.

[0032] The opening and closing parts include a baffle plate 18 movably arranged on the telescopic hose 23, a connecting rod 17 fixed on the baffle plate 18, a compression spring 12 fixed on the quantitative plate 11, a limiting arc block 13 fixed on the compression spring 12, a movable block 14 movably arranged on the quantitative box 3, an annular spring 15 fixed on the movable block 14, and a second spring 16 and a limiting plate fixed on the quantitative box 3. The number of the baffle plate 18, the connecting rod 17, the compression spring 12, the limiting arc block 13, the movable block 14, the annular spring 15, the second spring 16 and the limiting plate are all two, and the two baffle plates 18 are movable. The telescopic hose 23 is provided with two fixed square holes, the two material baffle plates 18 are respectively slidably connected to the two fixed square holes, the left and right sides of the quantitative box 3 are provided with fixed holes, the two connecting rods 17 are respectively slidably connected to the two fixed holes, the two limiting arc blocks 13 and the two connecting rods 17 are respectively movably fitted with the two movable blocks 14, the two second springs 16 are respectively fixedly connected to the two connecting rods 17, the two connecting rods 17 are provided with limiting holes, the two limiting plates are respectively slidably connected to the two limiting holes, and the connecting rods 17 can be supported and limited by the limiting plates and the limiting holes.

[0033] The pushing member includes a pushing frame 47 fixed on the injection block 48 and a partition plate 49 fixed in the injection tube 25. The pushing frame 47 is threadedly connected to the threaded rod 46. A sliding hole is opened on the inner side of the partition plate 49. The pushing frame 47 is slidably connected to the sliding hole.

[0034] The reset member includes a limit frame 55 fixed on the fixed base 1, a fifth spring 56 fixed on the limit frame 55, an elastic block 57 fixed on the fifth spring 56, a sixth spring 58 fixed on the limit frame 55, a limit bending rod 54 fixed on the sixth spring 58, a support block 52 movably arranged on the injection tube 25, a ninth spring 53 fixed on the support block 52, an eighth spring 50 fixed on the injection block 48, and an elastic arc block 51 fixed on the eighth spring 50. The limit frame 55 A through hole is provided on it, and the limit bent rod 54 is slidably connected to the through hole. The number of the fifth springs 56 is two. Three conical grooves are provided on the elastic block 57, and the three conical grooves are selectively engaged with the limit bent rod 54. The limit bent rod 54 and the elastic arc block 51 are movably fitted with the support block 52. The elastic block 57 is slidably connected to the limit frame 55. A support hole is provided on the injection tube 25, and the support block 52 is slidably connected to the support hole. The ninth spring 53 is fixedly connected to the injection tube 25.

[0035] The speed regulating member includes a U-shaped frame 41 fixed on the elastic block 57, a shift lever 42 rotatably arranged on the U-shaped frame 41, a primary shift gear 44, an intermediate shift gear 43 and a high shift gear 45 fixed on the shift lever 42, a driving rod 37 rotatably arranged on the limit frame 55, a first transmission gear 39, a second transmission gear 38 and a third transmission gear 40 fixed on the driving rod 37, a motor 36 fixed on the limit frame 55, a movable rack 85 fixed on the U-shaped frame 41, a first gear 82, a first one-way gear 81, a second gear 83 and a second one-way gear 84 rotatably arranged on the detection box 2, and a first rack 59 and a second rack 63 fixed on the weight plate 20, wherein the first gear 82 and the second gear 83 are both meshed with the movable rack 85, and the first gear The rack 59 is movably engaged with the first one-way gear 81, and the second rack 63 is movably engaged with the second one-way gear 84. Two rack holes are provided at the bottom of the detection box 2. The first rack 59 and the second rack 63 are slidably connected with the two rack holes respectively. The primary speed change gear 44 is movably engaged with the first transmission gear 39, the intermediate speed change gear 43 is movably engaged with the second transmission gear 38, and the high-speed change gear 45 is movably engaged with the third transmission gear 40. The driving rod 37 is fixedly connected to the output end of the motor 36. The first one-way gear 81 is coaxially fixed with the first gear 82, and the second gear 83 is coaxially fixed with the second one-way gear 84. The inner side of the first one-way gear 81 is fixedly connected with a one-way reverse bearing, and the inner side of the second one-way gear 84 is fixedly connected with a one-way forward bearing.

[0036] The limiting member includes a fixed square key and a seventh spring 78 fixed on the threaded rod 46 and a positioning block 79 fixed on the seventh spring 78. A positioning slot is provided on the inner side of the shift lever 42. The number of the positioning slots is three. The three positioning slots are selectively engaged with the positioning block 79. A fixed key slot is provided on the inner side of the shift lever 42. The fixed square key is slidably connected to the fixed key slot. A fixed slot is provided on the inner side of the shift lever 42. The threaded rod 46 is slidably connected to the fixed slot.

[0037] The clamping member includes a fixed screw frame 34 fixed on the lower mold 32 and a threaded clamp block 35 rotatably arranged on the fixed screw frame 34. The number of the fixed screw frame 34 and the threaded clamp block 35 are both two. The two fixed screw frames 34 are respectively threadedly connected with the two threaded clamp blocks 35. The outer side of the upper mold 33 is provided with two sealing grooves. The two threaded clamp blocks 35 are respectively movably engaged with the two sealing grooves. The two fixed screw frames 34 are both L-shaped. The upper mold 33 and the lower mold 32 are movably fitted. An electric push rod 31 is fixedly connected to the fixed base 1, the lower mold 32 is fixedly connected to the output end of the electric push rod 31, the upper mold 33 is fixedly connected to the injection tube 25, and four limit rods are fixedly connected to the fixed base 1. Four limit circular grooves with the same diameter as the limit rods are opened on the inner side of the lower mold 32. The four limit rods are slidably connected to the four limit circular grooves respectively. The lower mold 32 can be raised and lowered by the four limit rods and the four limit circular grooves to ensure the stability of the up and down movement of the lower mold 32.

[0038] The positioning member includes a telescopic spring 21 fixed to the inner side of the weight plate 20, an arc-shaped block 22 fixed on the telescopic spring 21, and a plurality of first springs 19 fixed on the weight plate 20. The number of the telescopic spring 21 and the arc-shaped block 22 are both two. The left and right side walls of the detection box 2 are provided with arc-shaped slots. The number of the arc-shaped slots is two groups, and the number of the arc-shaped slots in each group is three. The two groups of arc-shaped slots are respectively connected to one of the two arc-shaped blocks 22. The weight plate 20 and the injection tube 25 are both connected to the telescopic hose 23. The outside of the telescopic hose 23 is fixedly installed with a first one-way valve 24. The plurality of the first springs 19 are evenly distributed on the inner side of the detection box 2, and the plurality of the first springs 19 are all fixedly connected to the detection box 2.

[0039] The adjusting member includes a cutting plate 30 movably arranged on the injection tube 25, a connecting rope 29 fixed on the cutting plate 30, a connecting block 26 movably arranged on the detection box 2, and a fourth spring 27 and a fixed pulley 28 fixed on the connecting block 26, one end of the connecting rope 29 is fixedly connected to the detection box 2, the fourth spring 27 is fixedly connected to the detection box 2, the arc-shaped clamping block 22 on the right side is movably fitted with the connecting block 26, the connecting rope 29 is movably connected to the fixed pulley 28, the injection tube 25 is provided with a cutting hole, the cutting plate 30 is slidably connected to the cutting hole, the detection box 2 is provided with a connecting hole, and the connecting block 26 is slidably connected to the connecting hole.

[0040] The exhaust component includes an exhaust cylinder 66 and a connecting pipe 67 fixed on the upper mold 33, a second one-way valve 68 fixed on the connecting pipe 67, an outlet pipe 69 fixed on the exhaust cylinder 66, a third one-way valve 70 fixed on the outlet pipe 69, a one-way bevel gear 60 rotatably arranged on the injection tube 25, a transmission bevel gear 61 and a movable disc 62, and a piston block 65 and a crank 64 movably arranged on the exhaust cylinder 66, the one-way bevel gear 60 is fixed to the outer side of the threaded rod 46, the one-way bevel gear 60 is meshed with the transmission bevel gear 61, the movable disc 62 is coaxially fixed with the transmission bevel gear 61, the movable disc 62 and the piston block 65 are both movably hinged with the crank 64, the upper mold 33 and the exhaust cylinder 66 are both connected with the connecting pipe 67, the exhaust cylinder 66 is connected with the outlet pipe 69, and the inner side of the one-way bevel gear 60 is fixedly connected with a one-way bearing.

[0041] The detection component includes a detection block 71 fixed on the upper mold 33, two third springs 75 fixed on the detection block 71, an active curved block 74 movably arranged on the detection block 71, a speaker 76 and a control switch 77 fixed on the vacuum cylinder 66, a fixed tube 72 fixed on the detection block 71, and a second solenoid valve 73 fixed on the fixed tube 72, the speaker 76 and the control switch 77 are both movably fitted with the active curved block 74, the fixed tube 72 and the air outlet pipe 69 are both connected to the detection block 71, the two third springs 75 are both fixedly connected to the active curved block 74, a detection hole is opened on the detection block 71, the detection block 71 is slidably connected to the detection hole, the motor 36 and the second solenoid valve 73 are both electrically connected to the control switch 77, and the detection block 71 is connected to the vacuum cylinder 66.

[0042] A one-way check bearing is provided in the first one-way gear 81 to limit the first gear 82, so that the first gear 82 can only rotate clockwise with the first one-way gear 81, and cannot rotate counterclockwise, thereby preventing the weight plate 20 and the first rack 59 from moving upward to drive the first one-way gear 81 to rotate counterclockwise, thereby preventing the first gear 82 from driving the movable rack 85 to move rightward. A one-way check bearing is provided in the second one-way gear 84 to limit the second gear 83, so that the rotating rod and the second gear 83 can only rotate counterclockwise with the second one-way gear 84, and cannot rotate clockwise. Rotation can prevent the weight plate 20 and the second rack 63 from moving upward to drive the second one-way gear 84 to rotate clockwise, thereby driving the first gear 82 to rotate clockwise, preventing the first gear 82 from driving the movable rack 85 to move leftward, and preventing the first rack 59 and the second rack 63 from moving upward to drive the first one-way gear 81 and the second one-way gear 84 to rotate, thereby changing the meshing relationship between the primary speed change gear 44 and the first transmission gear 39, the intermediate speed change gear 43 and the second transmission gear 38, and the high-speed change gear 45 and the third transmission gear 40, thereby preventing the injection block 48 from changing the injection speed when pushing the molten metal of the specified material.

[0043] The one-way bearing is arranged in the one-way bevel gear 60 to limit the transmission bevel gear 61 in one direction, so that the threaded rod 46 and the one-way bevel gear 60 can only drive the transmission bevel gear 61 to rotate clockwise. When the threaded rod 46 and the one-way bevel gear 60 rotate counterclockwise, the one-way bevel gear 60 cannot drive the transmission bevel gear 61 to rotate counterclockwise, so as to avoid the transmission movement of the piston block 65 when the threaded rod 46 drives the injection block 48 to move left and return to the initial state, and to prevent the exhaust member from driving the exhaust when the injection block 48 returns to its original position. The telescopic hose 23 can make the gravity plate have a telescopic effect, and the first one-way valve 24 can make the telescopic hose 23 have a one-way transmission effect, so as to avoid the metal liquid in the injection tube 25 from flowing back to the telescopic hose 23 during injection, and the second one-way valve 68 can avoid the upper mold 33 and the lower mold 33 from flowing back to the telescopic hose 23. When the gas in the mold 32 enters the connecting pipe 67, the gas backflow occurs. The third one-way valve 70 can prevent the gas from backflowing when it enters the detection block 71 through the fixed pipe 72, so as to ensure the gas extraction effect in the upper mold 33 and the lower mold 32. The fixed base 1 is fixedly connected with an intelligent controller 80, and the drive motor 7, the motor 36, the first solenoid valve 5, the intelligent switch 10, the control switch 77, the second solenoid valve 73, the speaker 76 and the four electric push rods 31 are all electrically connected to the intelligent controller 80. The intelligent controller 80 can control the drive motor 7, the motor 36, the first solenoid valve 5, the intelligent switch 10, the control switch 77, the second solenoid valve 73, the speaker 76 and the four electric push rods 31 to be opened and closed regularly with the intelligent controller 80.

[0044] The implementation principle of a casting method for an automobile chassis bracket in the embodiment of the present application is as follows: (1) The molten metal liquid can be poured into the transmission cylinder 6 through the feeding pipe 9, and the spiral blade 8 can be driven by the driving motor 7 to rotate and transfer the metal liquid to the quantitative box 3. At the same time, when the metal liquid is continuously added to the quantitative box 3, the quantitative plate 11 will be driven to move upward. Due to the influence of the metal liquid pressure, the two compression springs 12 will be squeezed to separate the two limit arc blocks 13 from the two movable blocks 14 respectively. When the quantitative plate 11 continues to move upward and fits with the intelligent switch 10 and is triggered, the driving motor 7 turns off the first solenoid valve 5 and opens, and the spiral blade 8 stops continuing to transfer the metal liquid to the quantitative box 3. At the same time, the metal liquid in the quantitative box 3 can be put into the detection box 2 through the connecting pipe 4. By this method, the metal liquid can be quantified, and a specified amount of metal liquid can be taken according to the model and size of the automobile chassis bracket to be processed, so as to avoid taking too much or too little metal liquid and causing defects in the automobile chassis bracket in the subsequent casting process, thereby ensuring the effect of the automobile chassis bracket casting process and achieving the purpose of quantitative casting of the automobile chassis bracket metal liquid; (2) When the molten metal flows into the detection box 2, it will fall on the weight plate 20. As the molten metal gradually increases, the multiple first springs 19 will gradually be in a compressed state, which will drive the weight plate 20 to gradually move downward. When the weight plate 20 moves downward, the two telescopic springs 21 are in a compressed state, so that the right arc-shaped block 22 is separated from the connecting block 26, and then the elastic force of the fourth spring 27 can drive the connecting block 26 and the fixed pulley 28 to move. When the fixed pulley 28 moves, it will drive the connecting rope 29 and the cutting plate 30 to move downward in turn, and the outlet of the injection tube 25 can be sealed to prevent the subsequent molten metal from flowing into the injection tube 25. The molten metal immediately flows into the upper mold 33 and the lower mold 32, so as to ensure the effect of the subsequent metal liquid injection; (3) When the weight plate 20 is driven downward by the weight of the molten metal, the material of the molten metal can be detected. When the two arc-shaped blocks 22 on the weight plate 20 correspond to the two arc-shaped slots at the top, the two arc-shaped blocks 22 can be pushed into the two arc-shaped slots at the top by the elastic force of the two telescopic springs 21, respectively, so as to limit the weight plate 20. If the weight plate 20 does not continue to move downward, it means that the material of the molten metal is magnesium alloy. When the two arc-shaped blocks 22 on the weight plate 20 correspond to the two arc-shaped slots in the middle, respectively, the two arc-shaped blocks 22 can be pushed into the two arc-shaped slots at the top by the elastic force of the two telescopic springs 21, respectively. The weight plate 20 can be limited if the weight plate 20 does not continue to move downward, indicating that the material of the molten metal is aluminum alloy. When the two arc-shaped blocks 22 on the weight plate 20 correspond to the two arc-shaped slots at the bottom, the two arc-shaped blocks 22 can be pushed into the two arc-shaped slots at the bottom by the elastic force of the two telescopic springs 21, indicating that the material of the molten metal is zinc alloy. Because in the case of the same volume, the weight of zinc alloy is the heaviest, followed by aluminum alloy, and magnesium alloy is the lightest. Therefore, the material of the molten metal can be detected by the range of movement of the weight plate 20. (4) When the molten metal on the weight plate 20 is a magnesium alloy, the weight plate 20 will move to the two arc-shaped slots at the top for positioning. At this time, the high-speed gear 45 is meshed with the third transmission gear 40, and the limit crank rod 54 is located in the right conical groove for positioning. When the molten metal on the weight plate 20 is an aluminum alloy, the weight plate 20 will gradually move from the two arc-shaped slots at the top to the two arc-shaped slots in the middle for positioning. At the same time, when the weight plate 20 moves downward, it will also drive the first rack 59 and the second rack 63 to move downward. The first rack 59 will gradually mesh with the first one-way gear 81, which can drive the first one-way gear 81 in turn. The gear 81 and the first gear 82 rotate clockwise, which in turn drives the movable rack 85, the U-shaped frame 41, the shift lever 42, the primary shift gear 44, the intermediate shift gear 43, the advanced shift gear 45 and the elastic block 57 to move leftward in sequence, so that the two fifth springs 56 are gradually in a compressed state. At the same time, when the elastic block 57 moves, it pushes the limit crank rod 54 to move, so that the sixth spring 58 is in a compressed state, and the limit crank rod 54 is separated from the currently corresponding conical groove. When the weight plate 20 corresponds to the two arc-shaped slots in the middle, the intermediate shift gear 43 is moved by the movement of the movable rack 85. 3 meshes with the second transmission gear 38, and at the same time, the limit crank rod 54 is moved to the left conical groove for positioning through the elastic force of the sixth spring 58. When the metal liquid on the weight plate 20 is zinc alloy, the weight plate 20 will gradually move from the two arc-shaped grooves in the middle to the two arc-shaped grooves in the lower part for positioning, the first rack 59 will separate from the first one-way gear 81, and the second rack 63 will gradually mesh with the second one-way gear 84, thereby driving the second one-way gear 84 and the second gear 83 to rotate counterclockwise in turn, thereby driving the movable rack 85, the U-shaped frame 41, the shift lever 42, the primary The speed gear 44, the intermediate speed gear 43, the advanced speed gear 45 and the elastic block 57 move to the right, and the limit crank rod 54 is separated from the currently corresponding conical groove by the elastic force of the sixth spring 58. When the weight plate 20 corresponds to the two arc-shaped slots at the bottom, the primary speed gear 44 is meshed with the first transmission gear 39 by the movement of the movable rack 85, and the limit crank rod 54 moves to the middle conical groove for positioning. According to the switching movement of the advanced speed gear 45, the intermediate speed gear 43 and the primary speed gear 44, the injection speed of the specified molten metal can be adjusted according to the material of the molten metal; (5) When all the molten metal in the quantitative box 3 flows into the detection box 2, the quantitative plate 11 will also move to the inner bottom wall of the quantitative box 3, and the two limit arc blocks 13 on the quantitative plate 11 will correspond to the two movable blocks 14 respectively. The elastic force of the two compression springs 12 will drive the two movable blocks 14 to move in opposite directions, so that the two annular springs 15 are stretched. When the two movable blocks 14 move in opposite directions, they will drive the two connecting rods 17 and the two baffle plates 18 to move in opposite directions, so that the two second springs 16 are in a stretched state. The two baffle plates 18 will separate to open the telescopic hose 23, and then the molten metal on the gravity plate will flow into the injection tube 25 through the telescopic hose 23; (6) At the same time, when the shift lever 42 moves left and right, the seventh spring 78 will be in a compressed state, so that the positioning block 79 gradually fits with the three positioning slots. The fixed square key and the fixed key slot can limit the threaded rod 46 to ensure that the threaded rod 46 can also be driven to rotate when the shift lever 42 rotates. When the primary speed change gear 44 is meshed with the first transmission gear 39, the positioning block 79 will correspond to the middle positioning slot. The elastic force of the seventh spring 78 can move the positioning block 79 to the middle positioning slot. When the intermediate speed change gear 43 is meshed with the second transmission gear 38, the positioning block 79 will be moved to the middle positioning slot. When meshing, the positioning block 79 will correspond to the left positioning slot, and the positioning block 79 can be moved to the left positioning slot by the elastic force of the seventh spring 78. When the high-speed gear 45 is meshing with the third transmission gear 40, the positioning block 79 will correspond to the right positioning slot, and the positioning block 79 can be moved to the right positioning slot by the elastic force of the seventh spring 78, so that the shift lever 42 can be limited to prevent the shift lever 42 from moving randomly when driving the threaded rod 46 to move, and the shift lever 42 can ensure the effect of driving the threaded rod 46 to change speed and rotate; (7) When all the molten metal on the weight plate 20 flows into the injection tube 25 through the telescopic hose 23, the weight plate 20 loses the weight of the molten metal and the elastic force of the first springs 19 can bounce the weight plate 20 to its original position. The weight plate 20 will fit in correspondence with the connecting block 26. The elastic force of the telescopic spring 21 can push the arc-shaped block 22 to move, thereby pushing the connecting block 26 to compress the fourth spring 27, which can push the connecting block 26 and the fixed pulley 28 to move and pull the connecting rope 29 in turn, thereby driving the cutting plate 30 to move upward. The outlet of the injection tube 25 can be opened by the motor 36, so that the molten metal in the injection tube 25 can flow into the upper mold 33 and the lower mold 32. When the primary speed change gear 44 is meshed with the first transmission gear 39, the motor 36 can sequentially drive the driving rod 37, the first transmission gear 39, the primary speed change gear 44, the speed change rod 42 and the threaded rod 46 to rotate, and then the pushing frame 47 and the injection block 48 can be sequentially driven to move. When the injection block 48 moves, the magnesium alloy molten metal in the injection tube 25 can be quickly injected, so that the magnesium alloy molten metal can be injected at a high speed. The aluminum alloy molten metal is injected into the upper mold 33 and the lower mold 32 at a medium speed to complete the casting process of the magnesium alloy molten metal. When the intermediate speed gear 43 is meshed with the second transmission gear 38, the motor 36 can sequentially drive the driving rod 37, the second transmission gear 38, the intermediate speed gear 43, the speed lever 42 and the threaded rod 46 to rotate, and then the push frame 47 and the injection block 48 can be driven to move in turn. When the injection block 48 moves, the aluminum alloy molten metal in the injection tube 25 can be injected at a medium speed, so that the aluminum alloy molten metal can be injected into the upper mold 33 and the lower mold 32 at a medium speed. In the process of casting the aluminum alloy molten metal, when the high-speed gear 45 is meshed with the third transmission gear 40, the motor 36 can sequentially drive the driving rod 37, the third transmission gear 40, the high-speed gear 45, the gear lever 42 and the threaded rod 46 to rotate, and then sequentially drive the pushing frame 47 and the injection block 48 to move. When the injection block 48 moves, the zinc alloy molten metal in the injection tube 25 can be injected at a low speed, so that the zinc alloy molten metal can be injected into the upper mold 33 and the lower mold 32 at a low speed, and the casting process of the zinc alloy molten metal is completed; (8) When the injection block 48 moves, it will also drive the eighth spring 50 and the elastic arc block 51 to move in turn. When the injection block 48 pushes all the molten metal into the upper mold 33 and the lower mold 32, the injection block 48 will fit in correspondence with the support block 52. The elastic force of the eighth spring 50 can push the elastic arc block 51 to move, thereby pushing the support block 52 to compress the ninth spring 53. When the support block 52 moves, it can push the limit crank rod 54 to move, so that the limit crank rod 54 is separated from the elastic block 57, so that the elastic block 57 loses its limit. The strong elasticity of the two fifth springs 56 can drive the elastic block 57, the U-shaped frame 41, the gear lever 42, the primary gear shift gear 44, and the intermediate gear shift gear 45 in turn. The wheel 43 and the high-speed gear 45 move to the left, so that the seventh spring 78 compresses the positioning block 79 and separates it from the currently corresponding positioning slot. The positioning block 79 can be moved to the right positioning slot to limit the threaded rod 46, and then the primary speed gear 44, the intermediate speed gear 43, and the high-speed gear 45 can be moved to the initial state, so that the high-speed gear 45 is meshed with the third transmission gear 40. When the injection block 48 drives the elastic arc block 51 to separate from the support block 52, the elastic force of the sixth spring 58 can drive the limiting curved rod 54 to move, so that the limiting curved rod 54 fits with the left conical groove to limit the elastic block 57, so that the elastic block 57 remains in the initial position; (9) At the same time, when the threaded rod 46 rotates, it will also drive the one-way bevel gear 60, the transmission bevel gear 61 and the movable disc 62 to rotate in sequence. Then, through the connection and cooperation between the movable disc 62, the crank 64 and the piston block 65, the movable disc 62 can drive the piston block 65 to move left and right in the vacuum cylinder 66 when it rotates. Through the left and right movement of the piston block 65, the gas in the upper mold 33 and the lower mold 32 can be sucked into the detection block 71 through the connecting pipe 67, the vacuum cylinder 66 and the outlet pipe 69 in sequence, so that the injection block 48 can be moved to the injection tube 2 When the molten metal in the upper mold 33 and the lower mold 32 is drawn into the upper mold 33 and the lower mold 32, the gas in the upper mold 33 and the lower mold 32 can be drawn out through the reciprocating movement of the piston block 65, so as to avoid the molten metal being squeezed by the gas when it is pressed into the upper mold 33 and the lower mold 32, and to avoid the generation of bubbles in the molten metal as much as possible, so as to ensure the effect of the molten metal casting process. Through the above method, when the injection block 48 completely draws the molten metal into the upper mold 33 and the lower mold 32, the gas in the upper mold 33 and the lower mold 32 will also be completely drawn into the detection block 71 to complete the exhaust process; (10) When the gas gradually enters the detection block 71, it will push the active block 74 to move, so that the two third springs 75 are in a compressed state. When the active block 74 gradually moves to the left, it will fit with the speaker 76 and the control switch 77 to trigger. The speaker 76 can remind the staff that the molten metal has been completely drawn into the upper mold 33 and the lower mold 32 to ensure the time for the molten metal casting process. The control switch 77 will trigger the second solenoid valve 73 to open, and then all the gas in the detection block 71 can be released through the fixed pipe 72. Through the elastic force of the two third springs 75, the active block 74 can quickly squeeze and release the gas from the fixed pipe 72. At the same time, it will also trigger the motor 36 to drive, and the injection block 48 can be moved to the starting position to facilitate the next process. The next molten metal is injected, so as to facilitate the cyclic casting process of the automobile chassis bracket; (11) When the lower mold 32 and the upper mold 33 are required to be used for casting, the four electric push rods 31 can first drive the lower mold 32 to move upward so that the lower mold 32 fits with the upper mold 33, and then the four threaded clamps 35 can be rotated left and right by turning clockwise so that the four threaded clamps 35 fit with the four sealing grooves respectively, so that the lower mold 32 and the upper mold 33 can be sealed and fixed to prevent the lower mold 32 and the upper mold 33 from falling off and deviating when processing the automobile chassis bracket. At the same time, after the lower mold 32 and the upper mold 33 have processed the automobile chassis bracket, the four threaded clamps 35 are counterclockwise to separate the four threaded clamps 35 from the four sealing grooves respectively, and then the lower mold 32 is driven downward by the four electric push rods 31 to separate the lower mold 32 from the upper mold 33, so that the processed automobile chassis bracket can be quickly demolded.

[0045] Compared with the prior art, the overall structure is simple and easy to use. The injection speed of molten metal casting can be automatically adjusted according to the different materials of the casting molten metal, so as to avoid a series of problems caused by the consistent injection speed when the casting device processes automobile chassis brackets of different materials. The invention can avoid the traces of air flow, foam and internal defects caused by too fast injection speed of zinc alloy, the incomplete filling or loose structure of the casting caused by too slow injection speed, the prolonged solidification time of aluminum alloy, the generation of defects such as bubbles and shrinkage cavities caused by improper injection speed of aluminum alloy, the loose and porous structure of the casting caused by too fast injection speed of magnesium alloy, and the fracture and falling off of dendritic dendrites caused by too slow injection speed. The casting quality of automobile chassis brackets of different materials can be guaranteed and the actual casting needs of automobile chassis brackets can be met.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A casting method for an automobile chassis bracket, characterized in that: The steps include: S1. Material preparation: according to the design requirements and performance requirements of the automobile chassis bracket, select suitable casting materials, such as zinc alloy, aluminum alloy and magnesium alloy, and then cut the selected materials into particles of appropriate size to obtain granular metal materials; S2. Melting equipment, pour the cut granular metal material into the electric furnace for heating, keep the heating temperature at 720-830°C and stir for 30 minutes to ensure that the metal material is evenly heated and completely melted, and obtain the casting metal liquid after melting; S3. A casting device is provided to pour the casting molten metal into the casting device, and the pouring speed of the molten metal is controlled to ensure that the molten metal can smoothly and evenly fill the casting mold. After the molten metal is poured, the casting is completely cooled and solidified, and the mold is opened and the casting is removed to obtain the automobile chassis bracket; In step S3, it is necessary to control the pouring speed of the pouring equipment on the molten metal according to the different materials of the molten metal, and the pouring equipment comprises a fixed base (1), a quantitative box (3) arranged on the fixed base (1), a detection box (2) and a shot tube (25); The fixed base (1) is provided with a mold assembly for shaping the molten metal, the quantitative box (3) is provided with a quantitative assembly for quantifying the molten metal, the detection box (2) is provided with a detection assembly for weight detection of the molten metal, and the injection tube (25) is provided with an injection assembly for injecting the molten metal; The quantitative component comprises a quantitative plate (11) movably arranged in the quantitative box (3) and a lifting member for lifting the quantitative plate (11); The detection assembly comprises a weight plate (20) movably arranged inside the detection box (2), a telescopic hose (23) fixed to the weight plate (20), a positioning member for positioning the weight plate (20), and an opening and closing member for opening and closing the telescopic hose (23) at a fixed time; The injection assembly comprises an injection block (48) and a material cutting plate (30) movably arranged inside the injection tube (25), a threaded rod (46) rotatably arranged inside the injection tube (25), a pushing member for pushing the injection block (48), a speed regulating member for regulating the rotation speed of the threaded rod (46), an adjusting member for regulating the lifting and lowering of the material cutting plate (30), and a limiting member and a resetting member for limiting and resetting the speed regulating member, wherein the speed regulating member, the resetting member and the adjusting member are all driven by the weight plate (20); The mold assembly comprises an upper mold (33) and a lower mold (32) arranged on a fixed base (1), a clamping member for clamping the upper mold (33) and the lower mold (32), an exhaust member for exhausting the upper mold (33) and the lower mold (32), and a detection member for detecting the exhaust volume, wherein the exhaust member is driven by a pushing member.

2. The casting method of an automobile chassis bracket according to claim 1, characterized in that: The lifting member comprises a transmission cylinder (6) fixed on the quantitative box (3), a connecting pipe (4) and an intelligent switch (10), a first solenoid valve (5) fixed on the connecting pipe (4), a driving motor (7) fixed on the transmission cylinder (6), and a spiral blade (8) rotatably arranged in the transmission cylinder (6), wherein the spiral blade (8) is fixedly connected to the output end of the driving motor (7), the transmission cylinder (6) and the connecting pipe (4) are both connected to the quantitative box (3), the driving motor (7) and the first solenoid valve (5) are both electrically connected to the intelligent switch (10), and the quantitative plate (11) is movably fitted with the intelligent switch (10).

3. The casting method of an automobile chassis bracket according to claim 1, characterized in that: The opening and closing member comprises a baffle plate (18) movably arranged on the telescopic hose (23), a connecting rod (17) fixed on the baffle plate (18), a compression spring (12) fixed on the quantitative plate (11), a limiting arc block (13) fixed on the compression spring (12), a movable block (14) movably arranged on the quantitative box (3), an annular spring (15) fixed on the movable block (14), and a second spring (16) and a limiting plate fixed on the quantitative box (3). The number of the baffle plate (18), the connecting rod (17), the compression spring (12), the limiting arc block (13), the movable block (14), the annular spring (15), the second spring (16) and the limiting plate are all two. The two baffle plates (18) are movably fitted together, the two limiting arc blocks (13) and the two connecting rods (17) are movably fitted together with the two movable blocks (14), and the two second springs (16) are fixedly connected to the two connecting rods (17).

4. The casting method of an automobile chassis bracket according to claim 1, characterized in that: The pushing member comprises a pushing frame (47) fixed on the injection block (48) and a partition plate (49) fixed in the injection tube (25); the pushing frame (47) is threadedly connected to the threaded rod (46); a sliding hole is formed on the inner side of the partition plate (49); and the pushing frame (47) is slidably connected to the sliding hole.

5. The casting method of an automobile chassis bracket according to claim 1, characterized in that: The reset member comprises a limit frame (55) fixed on the fixed base (1), a fifth spring (56) fixed on the limit frame (55), an elastic block (57) fixed on the fifth spring (56), a sixth spring (58) fixed on the limit frame (55), a limit bent rod (54) fixed on the sixth spring (58), a support block (52) movably arranged on the injection tube (25), a ninth spring (53) fixed on the support block (52), an eighth spring (50) fixed on the injection block (48), and an elastic arc block (51) fixed on the eighth spring (50), the elastic block (57) being provided with three conical grooves, the three conical grooves being selectively engaged with the limit bent rod (54), the limit bent rod (54) and the elastic arc block (51) both being movably fitted with the support block (52), and the ninth spring (53) being fixedly connected to the injection tube (25).

6. The casting method of the automobile chassis bracket according to claim 5, characterized in that: The speed regulating member comprises a U-shaped frame (41) fixed on the elastic block (57), a speed change rod (42) rotatably arranged on the U-shaped frame (41), a primary speed change gear (44), an intermediate speed change gear (43) and a high speed change gear (45) fixed on the speed change rod (42), a driving rod (37) rotatably arranged on the limit frame (55), a first transmission gear (39), a second transmission gear (38) and a third transmission gear (40) fixed on the driving rod (37), an electric motor (36) fixed on the limit frame (55), a movable rack (85) fixed on the U-shaped frame (41), a first gear (82), a first one-way gear (81), a second gear (83) and a second one-way gear (84) rotatably arranged on the detection box (2), and a first rack (59) and a second rack (63) fixed on the weight plate (20), wherein the speed regulating member comprises a first gear (82), a first one-way gear (81), a second gear (83) and a second one-way gear (84) rotatably arranged on the detection box (2), and a first rack (59) and a second rack (63) fixed on the weight plate (20). The first gear (82) and the second gear (83) are both meshed with a movable rack (85); the first rack (59) is movably meshed with the first one-way gear (81); the second rack (63) is movably meshed with the second one-way gear (84); the primary speed change gear (44) is movably meshed with the first transmission gear (39); the intermediate speed change gear (43) is movably meshed with the second transmission gear (38); and the high speed change gear (45) is movably meshed with the third transmission gear (40); the drive rod (37) is fixedly connected to the output end of the motor (36); the first one-way gear (81) is coaxially fixed with the first gear (82); the second gear (83) is coaxially fixed with the second one-way gear (84); a one-way reverse bearing is provided on the inner side of the first one-way gear (81); and a one-way forward bearing is provided on the inner side of the second one-way gear (84).

7. The casting method of an automobile chassis bracket according to claim 1, characterized in that: The positioning member comprises a telescopic spring (21) fixed to the inner side of the weight plate (20), an arc-shaped clamping block (22) fixed to the telescopic spring (21), and a plurality of first springs (19) fixed to the weight plate (20). The number of the telescopic spring (21) and the number of the arc-shaped clamping block (22) are both two. The left and right side walls of the detection box (2) are both provided with arc-shaped clamping grooves. The number of the arc-shaped clamping grooves is two groups, and the number of the arc-shaped clamping grooves in each group is three. The two groups of arc-shaped clamping grooves are respectively clamped with one of the two arc-shaped clamping blocks (22). The weight plate (20) and the injection tube (25) are both connected to the telescopic hose (23). The outer side of the telescopic hose (23) is fixedly mounted with a first non-return valve (24). The plurality of first springs (19) are all fixedly connected to the detection box (2).

8. The casting method of the automobile chassis bracket according to claim 7, characterized in that: The adjusting member comprises a material opening plate (30) movably arranged on the injection tube (25), a connecting rope (29) fixed on the material opening plate (30), a connecting block (26) movably arranged on the detection box (2), and a fourth spring (27) and a fixed pulley (28) fixed on the connecting block (26); one end of the connecting rope (29) is fixedly connected to the detection box (2); the fourth spring (27) is fixedly connected to the detection box (2); the arc-shaped clamping block (22) on the right side is movably fitted with the connecting block (26); the connecting rope (29) is movably connected to the fixed pulley (28); a material opening hole is opened on the injection tube (25); and the material opening plate (30) is slidably connected to the material opening hole.

9. The casting method of an automobile chassis bracket according to claim 6, characterized in that: The exhaust component comprises an exhaust cylinder (66) and a connecting pipe (67) fixed on the upper mold (33), a second one-way valve (68) fixed on the connecting pipe (67), an outlet pipe (69) fixed on the exhaust cylinder (66), a third one-way valve (70) fixed on the outlet pipe (69), a one-way bevel gear (60) rotatably arranged on the injection tube (25), a transmission bevel gear (61) and a movable disc (62), and a piston block (65) and a crank (64) movably arranged on the exhaust cylinder (66), wherein the one-way bevel gear (60) is fixed on the outer side of the threaded rod (46), the one-way bevel gear (60) is meshed with the transmission bevel gear (61), the movable disc (62) is coaxially fixed with the transmission bevel gear (61), the movable disc (62) and the piston block (65) are both movably hinged with the crank (64), and a one-way bearing is arranged on the inner side of the one-way bevel gear (60).

10. The casting method of the automobile chassis bracket according to claim 9, characterized in that: The detection component comprises a detection block (71) fixed on the upper mold (33), two third springs (75) fixed on the detection block (71), an active curved block (74) movably arranged on the detection block (71), a speaker (76) and a control switch (77) fixed on the vacuum cylinder (66), a fixed tube (72) fixed on the detection block (71), and a second solenoid valve (73) fixed on the fixed tube (72); the speaker (76) and the control switch (77) are both movably fitted with the active curved block (74); the two third springs (75) are both fixedly connected to the active curved block (74); and the motor (36) and the second solenoid valve (73) are both electrically connected to the control switch (77).

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