Die-casting production line

Abstract

The die-casting production line comprises a smelting furnace system, a die-casting machine, a cooling device, an edge removing device, a polishing device and a vibration grinding device, the die-casting machine comprises a feeding device, the feeding device comprises a material pushing cavity, a material pushing rod and a feeding mechanical arm, one end of the material pushing cavity is open and serves as a discharging port of molten aluminum, and the other end of the material pushing cavity is open and serves as a discharging port of the molten aluminum. The other end of the material pushing cavity is open, the end of the material pushing rod enters the material pushing cavity through the opening in the end, and the top face of the material pushing cavity is open and serves as a feeding port of molten aluminum; a feeding filtering part is arranged outside an opening in the top surface of the pushing cavity, and molten aluminum enters the pushing cavity after being filtered by the feeding filtering part; the feeding mechanical arm pours molten aluminum in the smelting furnace system into the pushing cavity by controlling the soup ladle. The feeding filtering part is arranged above the material pushing cavity, so that dregs in the metal solution can be filtered out; and the multiple cooling water ponds are arranged, and the temperatures of the cooling water ponds are different, so that the problems of deformation, cracks and the like are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of die casting, and in particular to a die casting production line. Background Technology

[0002] A die-casting machine is a precision forming device used to manufacture metal parts. It shapes and sizes by injecting molten metal into a mold cavity. Die-casting technology is widely used in many industries, including automotive, aerospace, electronics, and home appliances, because this process can efficiently produce parts with complex structures, high surface quality, and high dimensional accuracy.

[0003] like Figure 1 and Figure 2 The diagram shown illustrates the structure of an aluminum die-casting machine, including a moving mold and a fixed mold. The die-casting process is as follows: The furnace melts aluminum ingots, such as... Figure 3 As shown, molten aluminum is poured into the ejector cavity, the moving mold and the fixed mold close, and at the same time the ejector rod pushes the molten aluminum in the ejector cavity between the fixed mold and the moving mold to form the required casting. After the casting is formed, it is removed, cooled and sent to the trimming station, where the trimming process is carried out manually or by machine (after the die casting is completed, the edge will have a ring of burrs or flash). After trimming, it enters the grinding equipment for grinding and polishing. Finally, according to the customer's requirements, it is polished by vibrating sand.

[0004] The above-mentioned production line has the following defects:

[0005] 1. During the melting of aluminum ingots in a furnace, slag may be generated. This slag is mainly composed of compounds formed by the oxidation of impurities in the aluminum ingots at high temperatures or by reactions with other elements, such as aluminum oxide. If these slags are not removed, they may mix into the molten aluminum and affect the quality of the final casting, such as reducing the strength and corrosion resistance of the casting. Currently, the main method is to add refining agents during melting and use chemical methods to remove the slags, but the removal is not thorough. There is also a method of manually removing slags, which is effective but too dangerous.

[0006] 2. The process of pouring molten aluminum into the pusher chamber is achieved by a ladle controlled by a robotic arm. During the pouring process, because the molten aluminum is in a high-temperature boiling state and the pusher chamber is relatively shallow, the molten aluminum will splash out, affecting the production environment and the safety of surrounding workers. At the same time, if the boiling molten aluminum is not properly cooled, it will form voids in the casting, affecting the quality of the casting. In addition, as mentioned in point 1 above, there will be slag in the molten metal, and the furnace system's filtration is not thorough, which may affect the quality of the casting.

[0007] 3. After the die casting is completed, the mold and the mold need to be cooled and lubricated in order to carry out the next die casting. At present, the spraying of the lubricant is realized by a mechanical arm, which has good effect and low cost, but the cooling is realized by setting a cooling runner in the mold to realize internal cooling, but the cost is very high, and when the mold is replaced, the cooling runner needs to be opened in the new mold, which is complicated;

[0008] 4. At present, the cooling of aluminum castings is mainly realized by water cooling and air drying, but the cooling speed has no good control method, and each type (material, structure, etc.) of die casting has a specific temperature change curve, and local cooling too fast or too slow will cause deformation, cracks and other problems;

[0009] 5. Due to the complexity of the shape of the casting, the polishing process is mainly carried out by manual, and the waste generated during the process is easy to form dust under the influence of the external environment, which affects the cleanliness of the workshop and the health of the workers. The current polishing equipment does not have a simple and low-cost waste recycling structure;

[0010] 6. Vibratory grinding polishing is realized by a sand blasting machine. For small castings, a small sand blasting machine can be selected. After grinding is completed, the grinding medium is manually separated, and the casting (also called material separation) can be taken out. However, for large castings, the volume of the grinding medium is large, and manual separation is time-consuming and laborious. The existing sand blasting machine has a magnetic separation mechanism (see patent CN201822244762.2), but it can only separate magnetic castings and cannot separate aluminum castings.

[0011] Therefore, the present application is proposed. Practical new type content

[0012] The utility model discloses a die casting production line to solve the problems in the background art.

[0013] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0014] A die casting production line, comprising a furnace system, a die casting machine, a cooling device, an edge removing device, a polishing device and a vibratory grinding device, the die casting machine comprising a feeding device, the feeding device comprising a pushing cavity, a pushing rod and a feeding mechanical arm, one end of the pushing cavity being open as an aluminum liquid discharge port, the other end of the pushing cavity being open, the end of the pushing rod entering the inside of the pushing cavity through the end opening, the top surface of the pushing cavity being open as an aluminum liquid inlet; the top surface opening of the pushing cavity is provided with an inlet filter part, and the aluminum liquid enters the pushing cavity after being filtered by the inlet filter part; the feeding mechanical arm is provided with a ladle, and the feeding mechanical arm pours the aluminum liquid in the furnace system into the pushing cavity by controlling the ladle.

[0015] Further, the feeding filter part comprises an outer cylinder and an inner cylinder, and the feeding device comprises a filter screen replacement mechanical arm, the outer cylinder is open and hollow at its upper and lower ends, the opening diameter of the outer cylinder at its two ends is larger than the opening diameter of the top surface of the pushing cavity, and the lower part of the outer cylinder is fixed outside the top surface opening of the pushing cavity;

[0016] The inner cylinder is just fitted into the hollow part of the outer cylinder, the inner cylinder is open and hollow at its upper and lower ends, the opening diameter of the upper end is larger than that of the lower end, and the opening diameter of the lower end is equal to the opening diameter of the top surface of the pushing cavity, the lower end opening of the inner cylinder is fixed with a feeding filter screen in the hollow part of the inner cylinder, the feeding filter screen is in the structure of a circular truncated cone with the upper part smaller than the lower part, the feeding filter screen is provided with a lifting ring exposed to the outer cylinder, and the filter screen replacement mechanical arm can disassemble and assemble the feeding filter screen by grabbing the lifting ring;

[0017] The inner diameter of the hollow part of the outer cylinder gradually decreases from the top to the bottom, forming an inverted circular truncated cone cavity, and the outer diameter of the inner cylinder gradually decreases from the top to the bottom, forming an inverted circular truncated cone.

[0018] Further, the part of the pushing rod entering the pushing cavity is provided with an internal cooling water flow channel, and the cooling water flow channel forms a cooling water inlet and a cooling water outlet at the side wall of the pushing rod.

[0019] Further, the furnace system comprises a tiltable furnace, a heat preservation furnace, a rotating table, a spray cooling unit and a waste liquid tank, the rotating table comprises a liftable base and a rotating disc above the base, the heat preservation furnace and the waste liquid tank are respectively located on the two sides of the rotating table, the rotating disc is provided with a bag-shaped filter screen which can be located above the heat preservation furnace or the waste liquid tank, the furnace is located on one side of the heat preservation furnace, and after the furnace is tilted, the molten aluminum liquid is poured into the heat preservation furnace through the bag-shaped filter screen, and the spray cooling unit is located above the waste liquid tank and used for cooling the bag-shaped filter screen.

[0020] The base is provided with an electromagnet used for attracting the rotating disc.

[0021] The rotating disc is provided with a vibrator used for vibrating the bag-shaped filter screen.

[0022] Further, the die casting machine comprises a rack, a moving die and a fixed die, the rack is provided with a cooling and lubricating device, the cooling and lubricating device comprises a cooling and lubricating rotating unit, a cooling and lubricating lifting unit and a cooling and lubricating seat, the cooling and lubricating rotating unit is fixed on the rack, the rotating end of the cooling and lubricating rotating unit is fixed with the cooling and lubricating lifting unit, and the lifting end of the cooling and lubricating lifting unit is fixed with the cooling and lubricating seat, after the moving die and the fixed die are separated, the cooling and lubricating seat can descend into the space between the moving die and the fixed die.

[0023] One side of the cooling and lubricating seat is provided with a cooling water nozzle and a blowing port, the opposite side is provided with a lubricant nozzle and a blowing port, and the inside of the cooling and lubricating seat is provided with a cooling water pipeline, a lubricating liquid pipeline and an air duct.

[0024] The bottom surface of the cooling and lubricating seat is provided with two liquid receiving discs below the cooling water spray head and the lubricant spray head respectively, the outer side of the liquid receiving disc is just fitted with the separated side wall of the movable die or the side wall of the fixed die, the cooling and lubricating seat is provided with a cooling water recovery flow channel and a lubricating liquid recovery flow channel, the bottom surface of the liquid receiving disc is an inclined surface inclined to the side of the cooling and lubricating seat, for guiding the cooling water in the disc into the cooling water recovery flow channel, and guiding the lubricating liquid in the disc into the lubricating liquid recovery flow channel;

[0025] The die casting machine is provided with a waste liquid tank and a waste liquid discharge pipeline on the bottom surface between the movable die and the fixed die.

[0026] Further, the cooling device comprises a transfer mechanical arm, a cooling upper loading conveying belt, N cooling water pools, a cooling lower loading conveying belt, a cooling air drying unit and a cooling truss mechanical arm.

[0027] The transfer mechanical arm is used to take down the casting from the die casting machine and transfer it to the cooling upper loading conveying belt.

[0028] The cooling upper loading conveying belt is used to move the casting to the side of the cooling water pool.

[0029] The N cooling water pools are arranged in a straight line, and each cooling water pool is provided with a temperature sensor, a drug concentration sensor and a heating device, the cooling water pool is connected with a circulating pipeline, and the circulating pipeline is installed with a filter, a water supplement pipe and a drug adding pipe; the temperature sensor is used to monitor the water temperature of the cooling water pool in real time, the drug concentration sensor is used to monitor the drug concentration of the cooling water pool in real time, the water in the cooling water pool is filtered to remove impurities through the filter, supplemented with water through the water supplement pipe, and supplemented with drug concentration through the drug adding pipe.

[0030] The cooling lower loading conveying belt is used to move the casting to the side of the edge removing device, and the cooling lower loading conveying belt is a mesh belt, and is provided with a water receiving disc and a drain pipe below.

[0031] The cooling air drying unit is located above the cooling lower loading conveying belt, and is used to dry the casting on the cooling lower loading conveying belt.

[0032] The cooling truss mechanical arm can be vertically lifted and moved along the arrangement direction of the cooling water pool, and is used to transfer the casting on the cooling upper loading conveying belt to the cooling water pool, move the casting from the previous cooling water pool to the next cooling water pool, and finally transfer the casting from the cooling water pool to the cooling lower loading conveying belt.

[0033] Further, the polishing device comprises a polishing cavity, a polishing belt assembly, a polishing driving part, a water guide plate, a water tank, a water pump, a backflow channel, a waste chip tank, a guard plate and a clean water tank.

[0034] The water guide plate is vertically placed, the upper part of which is a vertical plate extending to the top of the polishing cavity, the lower part of which is a horizontal plate extending to the bottom of the polishing cavity, and the middle part of which is an arc surface, and a reflux hole is formed on the arc surface;

[0035] The polishing belt assembly is installed in the polishing cavity and driven to operate by the polishing driving part, and the polishing belt assembly is located at the front side of the water guide plate;

[0036] The waste groove is located at the rear side of the water guide plate, the two ends of the reflux channel are communicated with the reflux hole and the waste groove respectively, and the side part of the waste groove is provided with a detachable gate and a filter plate;

[0037] The clean water groove is located next to the filter plate side of the waste groove;

[0038] The water tank is installed on the top of the water guide plate, the water outlet of the water tank is arranged at the front side of the water guide plate, the water pump is installed in the clean water groove, and the water outlet of the water pump extends into the water tank through a pipeline;

[0039] The guard plate is installed on the outer side of the polishing belt assembly.

[0040] Further, the vibration grinding device comprises a cleaning upper feeding conveyor belt, a cleaning pool, a cleaning gantry mechanical arm, a cleaning lower feeding conveyor belt, a cleaning air drying unit, a vibration base and an annular grinding groove installed above the vibration base;

[0041] A discharge port is arranged in the tangential direction of the annular grinding groove, an arc-shaped mesh flat plate is arranged on the top surface of the grinding groove, one end of the mesh flat plate is connected to the tangential discharge port, and the other end of the mesh flat plate is provided with a mesh climbing plate which is detachable and arranged obliquely; when discharging, one end of the mesh climbing plate is connected to the other end of the mesh flat plate, and the other end of the mesh climbing plate is connected to the bottom surface of the grinding groove; when grinding, the mesh climbing plate is moved out of the grinding groove; the mesh diameter of the mesh flat plate and the mesh climbing plate is greater than the particle diameter of the grinding medium and smaller than the size of the casting;

[0042] One end of the cleaning upper feeding conveyor belt is connected to the tangential discharge port of the grinding groove, and the other end of the cleaning upper feeding conveyor belt is connected to one end of the cleaning pool; the cleaning lower feeding conveyor belt is arranged at the other end of the cleaning pool, the cleaning lower feeding conveyor belt is a mesh belt, and a water receiving tray and a drain pipe are arranged below the cleaning lower feeding conveyor belt; the cleaning air drying unit is arranged above the cleaning lower feeding conveyor belt;

[0043] The cleaning gantry mechanical arm can be vertically lifted and horizontally moved, and is used for conveying the casting on the cleaning upper feeding conveyor belt into the cleaning pool and moving the casting in the cleaning pool to the cleaning lower feeding conveyor belt.

[0044] Further, the grinding groove is provided with a guide hole in the bottom surface, a guide rail groove is arranged between the guide hole and the other end of the mesh plate, the mesh plate is slidably connected to the guide rail groove and can slide along the guide rail groove, and the mesh plate is driven by the climbing plate moving part;

[0045] The bottom surface of the grinding groove is provided with a discharging port, a closing discharging plate and a discharging plate moving part are slidably connected to the outer wall of the bottom surface of the grinding groove, the plate surface of the closing discharging plate is sequentially provided with a filter screen section, a closing section and an opening section along the sliding direction, the filter screen section is used for filtering out the debris in the grinding groove when corresponding to the discharging port, the closing section is used for plugging the discharging port of the bottom surface of the grinding groove when corresponding to the discharging port, and the opening section is used for tilting out the grinding medium in the grinding groove when corresponding to the discharging port.

[0046] The utility model discloses the advantages are:

[0047] 1. By setting the dolly filter screen on the heat preservation stove, the dross in the liquid is filtered out in the process that the liquid is poured into the melting furnace, and the filtered dross is rotated to the other side for cooling, so that the recycling of the dross is facilitated.

[0048] 2. By setting the feeding filter part above the pushing cavity, the dross in the metal solution can be filtered out, and the feeding filter part is set, and the height is much greater than the height of the pushing cavity, so that the splashing of the metal liquid is alleviated when the boiling metal liquid is poured, in addition, the metal filter screen can be disassembled and assembled by the mechanical hand, which is convenient and safe, and the cooling pipeline is arranged in the pushing rod, which is used for appropriately reducing the temperature of the boiling metal liquid and preventing the air holes of the die casting caused by the boiling of the metal liquid.

[0049] 3. By setting the cooling and lubricating device, the cooling device is additionally arranged in the original lubricating device in the form of a mechanical arm, so that the external cooling of the mold is realized, and the recovery structure of the cooling water and the lubricating liquid is arranged, so that the cost is reduced and the efficiency is increased.

[0050] 4. The cooling of the die casting is realized by arranging a plurality of cooling water pools, the temperature of each cooling water pool is different and meets the temperature change curve of the casting material, so that the ideal microstructure and physical properties of the die casting can be maintained during the cooling process, and the problems of deformation and cracks are effectively avoided.

[0051] 5. The water circulation structure is arranged in the polishing and polishing equipment, which is used for taking away and gathering the debris generated during polishing, and the accumulated debris can be prevented from being raised by external environmental factors after being soaked in water.

[0052] 6. In the sand vibrating grinding device, by setting the electric climbing structure, when polishing, the climbing plate is lowered, the casting is effectively ground, when distributing, the climbing plate is raised, in the vibration process, the casting is discharged by climbing the horizontal plate through the climbing plate, and the grinding medium returns to the grinding groove due to the net on the climbing plate and the horizontal plate. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 The three-dimensional structure of the prior art die casting machine is shown schematically;

[0054] Figure 2 The front view of the schematic diagram of Figure 1 ;

[0055] Figure 3 The enlarged schematic diagram of A part in Figure 1 ;

[0056] Figure 4 The schematic diagram of the plane layout of the die casting production line in the embodiment is shown;

[0057] Figure 5 The schematic diagram of the layout of the furnace system in the embodiment is shown;

[0058] Figure 6 The three-dimensional structure of the tiltable furnace in the embodiment is shown schematically;

[0059] Figure 7 The structure of the pushing cavity and the feeding filter part in the embodiment is shown schematically;

[0060] Figure 8 The assembly completion schematic diagram of Figure 7 ;

[0061] Figure 9 The schematic diagram of the cooling water flow channel layout inside the pushing rod in the embodiment is shown;

[0062] Figure 10 The schematic diagram of the feeding device in the embodiment is shown;

[0063] Figure 11 The installation schematic diagram of the cooling and lubricating device on the die casting machine in the embodiment is shown;

[0064] Figure 12 The structure schematic diagram of the cooling and lubricating device in the embodiment is shown;

[0065] Figure 13 The enlarged schematic diagram of B part in Figure 11 ;

[0066] Figure 14 The structure schematic diagram of the cooling device in the embodiment is shown;

[0067] Figure 15 The structure schematic diagram of the cooling water pool of the cooling device in the embodiment is shown;

[0068] Figure 16 , Figure 17 , Figure 18 , Figure 19 These are schematic diagrams of the grinding device from different perspectives in the embodiments;

[0069] Figure 20 and Figure 21 This is a schematic diagram showing the state in which the rear gate and filter plate of the grinding device are lifted in the embodiment;

[0070] Figure 22 This is a schematic diagram of the structure of the vibratory grinding device in the embodiment;

[0071] Figure 23 This is a three-dimensional structural diagram of the grinding tank in the embodiment;

[0072] Figure 24 This is a top view of the grinding tank in the embodiment, where the mesh ramp plate is not raised.

[0073] Figure 25 This is a schematic diagram of the structure of the closed material discharge plate at the bottom of the grinding tank in the embodiment;

[0074] Figure 26 for Figure 23 A schematic diagram of the structure from another perspective;

[0075] Figure 27 This is a schematic diagram of the driving structure of the mesh climbing plate in the embodiment;

[0076] Figure 28 This is a schematic diagram showing the state of the mesh ramp plate when it is raised in the grinding tank of the embodiment.

[0077] Label Explanation

[0078] 1. Furnace system; 101. Furnace; 102. Holding furnace; 103. Turntable; 1031. Liftable base; 1032. Turntable; 1033. Pocket filter; 1034. Electromagnet; 1035. Vibrator; 104. Spray cooling unit; 105. Waste liquid tank;

[0079] 2, die casting machine; 201, movable mold; 202, fixed mold; 203, feeding device; 2031, pushing cavity; 2032, pushing rod; 2033, feeding mechanical arm; 2034, outer cylinder; 2035, inner cylinder; 2036, filter screen replacement mechanical arm; 2037, feeding filter screen; 2038, lifting ring; 2039, cooling water flow channel; 204, rack; 205, cooling and lubricating device; 2051, cooling and lubricating rotating unit; 2052, cooling and lubricating lifting unit; 2053, cooling and lubricating seat; 2054, cooling water spray head; 2055, lubricant spray head; 2056, air blowing port; 2057, liquid receiving disc; 2058, waste liquid discharge pipeline;

[0080] 3, cooling device; 301, transfer mechanical arm; 302, cooling upper feeding conveyor belt; 303, cooling water pool; 304, cooling lower feeding conveyor belt; 305, cooling air drying unit; 306, cooling truss mechanical arm; 307, temperature sensor; 308, drug concentration sensor; 309, heating device; 310, filter; 311, water replenishing pipe; 312, drug adding pipe;

[0081] 4, polishing device; 401, polishing cavity; 402, polishing belt assembly; 403, polishing driving part; 404, water guide plate; 405, water tank; 406, water pump; 407, backflow channel; 408, waste chip groove; 409, guard plate; 410, clean water groove; 411, backflow hole; 412, gate plate; 413, filter plate; 414, water outlet of water tank;

[0082] 5, vibration grinding device; 501, cleaning upper feeding conveyor belt; 502, cleaning lower feeding conveyor belt; 503, cleaning pool; 504, cleaning truss mechanical arm; 505, cleaning air drying unit; 506, vibration base; 507, grinding groove; 508, mesh flat plate; 509, mesh climbing plate; 510, guide hole; 511, guide rail groove; 512, discharging port; 513, closed discharging plate; 5131, filter screen section; 5132, closed section; 5133, opening section;

[0083] 6, edge removing device. DETAILED DESCRIPTION

[0084] The utility model will be described in further detail below in combination with embodiments, and it is understood that the directions or position relations of the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" in the text are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model.

[0085] This embodiment proposes a die-casting production line, such as Figure 4 As shown, the process flow includes, in sequence, a furnace system 1, a die-casting machine 2, a cooling device 3, an edge-removing device 6, a grinding device 4, and a vibratory grinding device 5. After the aluminum ingot is melted into molten aluminum by the furnace system 1, it is poured into the die-casting machine 2 for die casting. The cast parts are first cooled, then hammered to remove the edges, and then polished. Finally, according to customer requirements, they undergo a brightening treatment in the vibratory grinding device 5.

[0086] like Figure 5 and Figure 6 As shown, the furnace system 1 includes a tiltable furnace 101, a holding furnace 102, a turntable 103, a spray cooling unit 104, and a waste liquid tank 105. The turntable 103 includes a liftable base 1031 and a turntable 1032 located above the base. The holding furnace 102 and the waste liquid tank 105 are located on opposite sides of the turntable 103. A pocket-shaped filter screen 1033 is installed on the turntable 1032 and can be positioned above the holding furnace 102 or the waste liquid tank 105. The furnace 101 is located on one side of the holding furnace 102. After the furnace 101 is tilted, the molten aluminum liquid is poured into the holding furnace 102 through the pocket-shaped filter screen 1033. The spray cooling unit 104 is located above the waste liquid tank 105 and is used to cool the pocket-shaped filter screen 1033.

[0087] The use of the furnace system 1 includes the following process: the worker puts aluminum ingots into the furnace 101, the furnace 101 melts the aluminum ingots and then pours them out. At this time, the louvered filter screen 1033 is driven down by the turntable 1032 to the top of the holding furnace 102. The poured aluminum liquid is filtered through the louvered filter screen 1033 and enters the holding furnace 102. Most of the slag in the aluminum liquid remains in the louvered filter screen 1033. The turntable 1032 rotates the louvered filter screen 1033 to the top of the waste liquid tank 105. The spray cooling unit 104 sprays water to cool the slag. The waste liquid flows into the waste liquid tank 105. The cooled slag can be taken away for recycling.

[0088] Preferably, the base 1031 is equipped with an electromagnet 1034 for attracting the turntable 1032, and the turntable 1032 is equipped with a vibrator 1035 for vibrating the pocket-shaped filter screen 1033. After the electromagnet 1034 attracts the turntable 1032, the turntable 1032 can be kept stable during the pouring of molten aluminum, preventing the turntable 1032 from tilting. The vibrator 1035 can vibrate the pocket-shaped filter screen 1033, promoting the separation of molten aluminum and slag in the pocket-shaped filter screen 1033. Due to the vibrator 1035, the electromagnet 1034 can better maintain the stability of the turntable 1032.

[0089] The adjustable base 1031 allows the turntable 103 to be adapted to different models of furnace 101.

[0090] like Figures 7 to 10As shown, the die casting machine 2 comprises a feeding device 203, which comprises a pushing cavity 2031, a pushing rod 2032, a feeding mechanical arm 2033 and a filter screen replacement mechanical arm 2036. One end of the pushing cavity 2031 is open as an outlet for the molten aluminum, the other end of the pushing cavity 2031 is open, the end of the pushing rod 2032 enters the inside of the pushing cavity 2031 through the end opening, and the top surface of the pushing cavity 2031 is open as an inlet for the molten aluminum. An inlet filter is arranged outside the top surface opening of the pushing cavity 2031. After being filtered by the inlet filter, the molten aluminum enters the pushing cavity 2031. The feeding mechanical arm 2033 is provided with a ladle (prior art, not shown in the figure). The feeding mechanical arm 2033 pours the molten aluminum in the furnace system 1 into the pushing cavity 2031 by controlling the ladle.

[0091] The inlet filter comprises an outer cylinder 2034 and an inner cylinder 2035. The upper and lower ends of the outer cylinder 2034 are open and hollow. The diameters of the openings at the two ends of the outer cylinder 2034 are larger than the diameter of the top surface opening of the pushing cavity 2031. The lower part of the outer cylinder 2034 is fixed outside the top surface opening of the pushing cavity 2031. The inner cylinder 2035 can be exactly fitted into the hollow part of the outer cylinder 2034. The upper and lower ends of the inner cylinder 2035 are open and hollow. The diameter of the upper end opening is larger than the diameter of the lower end opening. The diameter of the lower end opening is equal to the diameter of the top surface opening of the pushing cavity 2031. A feeding filter screen 2037 is fixed on the lower end opening of the inner cylinder 2035 in the hollow part of the inner cylinder 2035. The feeding filter screen 2037 is in the form of a circular truncated cone with the upper end smaller than the lower end. A lifting ring 2038 is arranged on the feeding filter screen 2037 to expose the outer cylinder 2034. The filter screen replacement mechanical arm 2036 can disassemble and assemble the feeding filter screen 2037 by grabbing the lifting ring 2038. In addition, in order to prevent the molten aluminum from splashing, the outer cylinder 2034 and the inner cylinder 2035 have a certain height, which is at least higher than the height of the pushing cavity 2031.

[0092] The use process of the feeding device 203 comprises the following steps. The inner cylinder 2035 is installed in the outer cylinder 2034. The feeding mechanical arm 2033 scoops up the molten aluminum in the holding furnace 102 by the ladle and pours it into the inner cylinder 2035. The molten aluminum poured into the inner cylinder 2035 is filtered by the feeding filter screen 2037 and then enters the pushing cavity 2031. The dregs in the molten aluminum are left in the inner cylinder 2035. The pushing rod 2032 pushes the molten aluminum in the pushing cavity 2031 into the space between the movable die 201 and the fixed die 202. When there are too many dregs in the inner cylinder 2035, the filter screen replacement mechanical arm 2036 lifts up the inner cylinder 2035 by grabbing the lifting ring 2038 and disassembles it. After cleaning the feeding filter screen 2037, the inner cylinder 2035 is installed in the outer cylinder 2034 again.

[0093] When the inner cylinder 2035 is installed, if the outer wall of the inner cylinder 2035 and the inner wall of the outer cylinder 2034 are straight arms, when the inner cylinder 2035 is tilted during the falling process, the inner cylinder 2035 will be stuck, resulting in installation not in place. To solve this defect, the inner diameter of the hollow part of the outer cylinder 2034 gradually decreases from the top to the bottom, forming an inverted circular table cavity, and the outer diameter of the inner cylinder 2035 gradually decreases from the top to the bottom, forming an inverted circular table. With such a design, the inner cylinder 2035 can be guided along the inner wall of the outer cylinder 2034 during the falling process to prevent the occurrence of the sticking phenomenon.

[0094] As preferred, the part of the pushing rod 2032 entering the pushing cavity 2031 is provided with an internal cooling water channel 2039, which forms a cooling water inlet and a cooling water outlet at the side wall of the pushing rod 2032. A cooling circulation pipeline is arranged inside the pushing rod 2032 to appropriately reduce the temperature of the boiling metal liquid and prevent the occurrence of air pockets in the die casting due to boiling of the metal liquid. Of course, the temperature of the cooling water should be appropriate and should not excessively reduce the temperature of the aluminum liquid to ensure the quality of the die casting.

[0095] As shown in Figures 10 to 12 The die casting machine 2 includes a frame 204, a movable die 201 and a fixed die 202, and the frame 204 is provided with a cooling and lubricating device 205, which includes a cooling and lubricating rotating unit 2051, a cooling and lubricating lifting unit 2052 and a cooling and lubricating seat 2053. The cooling and lubricating rotating unit 2051 is fixed on the frame 204, the rotating end of which is fixed with the cooling and lubricating lifting unit 2052, and the lifting end of the cooling and lubricating lifting unit 2052 is fixed with the cooling and lubricating seat 2053. After the movable die 201 and the fixed die 202 are separated, the cooling and lubricating seat 2053 can be lowered into the space between them. One side of the cooling and lubricating seat 2053 is provided with a cooling water nozzle 2054 and a blowing port 2056, and the opposite side is provided with a lubricant nozzle 2055 and a blowing port 2056. The inside of the cooling and lubricating seat 2053 is provided with a cooling water pipeline, a lubricating liquid pipeline and an air duct. The cooling water pipeline is used to supply external cooling water to the cooling water nozzle 2054, the lubricating liquid pipeline is used to supply external lubricating liquid to the lubricant nozzle 2055, and the air duct is used to supply air generated by an external fan to the blowing port 2056.

[0096] The bottom surface of the cooling and lubricating seat 2053 is provided with two liquid receiving discs 2057 located below the cooling water nozzle 2054 and the lubricant nozzle 2055, respectively. The outer side of the liquid receiving disc 2057 is in close contact with the side wall of the movable die 201 or the fixed die 202 after separation. The cooling and lubricating seat 2053 is provided with a cooling water recovery channel and a lubricating liquid recovery channel. The bottom surface of the liquid receiving disc 2057 is a slope inclined to the side of the cooling and lubricating seat 2053, which is used to guide the cooling water in the disc into the cooling water recovery channel and guide the lubricating liquid in the disc into the lubricating liquid recovery channel.

[0097] The operation of the cooling and lubrication device 205 is as follows:

[0098] When die casting is completed, the moving mold 201 and the fixed mold 202 are opened. After the casting is removed, the cooling and lubrication lifting unit 2052 drives the cooling and lubrication seat 2053 to descend between the moving mold 201 and the fixed mold 202. At this time, the cooling water nozzle 2054 is aligned with the moving mold 201, and the lubricant nozzle 2055 is aligned with the fixed mold 202. The cooling water nozzle 2054 sprays cooling water to cool the moving mold 201. The sprayed cooling water is recovered and guided by the liquid receiving pan 2057 and enters the cooling water recovery channel.

[0099] After the moving mold 201 has cooled down, the cooling and lubrication rotating unit 2051 drives the cooling and lubrication seat 2053 to rotate, so that the cooling water nozzle 2054 is aligned with the fixed mold 202 and the lubricant nozzle 2055 is aligned with the moving mold 201. At this time, the air blowing port 2056 on the side of the moving mold 201 blows air to dry the moving mold 201. After drying, lubricant is sprayed to lubricate the moving mold 201, and the liquid receiving tray 2057 below collects the lubricant into the lubricant recovery channel. At the same time, the cooling water nozzle 2054 on the side of the fixed mold 202 sprays cooling water to cool the fixed mold 202. The sprayed cooling water is recovered and guided by the liquid receiving tray 2057 and enters the cooling water recovery channel.

[0100] After the fixed mold 202 is cooled and the moving mold 201 is lubricated, the cooling and lubrication rotating unit 2051 drives the cooling and lubrication seat 2053 to rotate, so that the cooling water nozzle 2054 is aligned with the moving mold 201 and the lubricant nozzle is aligned with the fixed mold 202. At this time, the air blowing port 2056 on the side of the fixed mold 202 blows air to dry the fixed mold 202. After drying, lubricant is sprayed to lubricate the fixed mold 202, and the liquid receiving tray 2057 below collects the lubricant into the lubricant recovery channel.

[0101] After the fixed mold 202 is lubricated, the cooling and lubrication lifting unit 2052 drives the cooling and lubrication seat 2053 to rise, completing the cooling and lubrication process.

[0102] Although a drip tray 2057 is provided at the bottom of the cooling and lubrication seat 2053, it is inevitable that lubricating fluid and cooling water will still accumulate on the bottom surface of the die-casting machine 2 between the moving mold 201 and the fixed mold 202. Preferably, such as... Figure 13 As shown, the die-casting machine 2 has a waste liquid tank and a waste liquid discharge pipe 2058 on its bottom surface between the moving mold 201 and the fixed mold 202, which are used to discharge unrecovered lubricating liquid and cooling water.

[0103] like Figure 14 and Figure 15As shown, the cooling device 3 comprises a transfer robot 301, a cooling feeding conveyor 302, N cooling water pools 303, a cooling discharging conveyor 304, a cooling air-drying unit 305 and a cooling gantry robot 306. The transfer robot 301 is used to take the castings from the die casting machine 2 and transfer them to the cooling feeding conveyor 302. The cooling feeding conveyor 302 is used to move the castings to the side of the cooling water pools 303. The N cooling water pools 303 are arranged in a straight line, and each cooling water pool 303 is provided with a temperature sensor 307, a drug concentration sensor 308 and a heating device 309. The cooling water pool 303 is connected with a circulating pipeline, and the circulating pipeline is provided with a filter 310, a water supplement pipe 311 and a drug supplement pipe 312. The temperature sensor 307 is used to monitor the water temperature of the cooling water pool 303 in real time, and the drug concentration sensor 308 is used to monitor the drug concentration of the cooling water pool 303 in real time. The water in the cooling water pool 303 is filtered by the filter 310, supplemented by the water supplement pipe 311, supplemented by the drug supplement pipe 312, and heated by the heating device 309 to keep the water temperature of the cooling water pool constant at a set value. The cooling discharging conveyor 304 is used to move the castings to the side of the edge removing device, and the cooling discharging conveyor 304 is a mesh belt provided with a water collecting tray and a drain pipe below. The castings coming out of the cooling water pool 303 have a lot of water remaining on them, and the remaining water flows into the water collecting tray through the mesh of the conveyor belt and is discharged through the drain pipe. The cooling air-drying unit 305 is located above the cooling discharging conveyor 304 and is used to air-dry the castings on the cooling discharging conveyor 304. The cooling gantry robot 306 can vertically lift and move along the arrangement direction of the cooling water pools 303, and is used to transfer the castings on the cooling feeding conveyor 302 to the cooling water pools 303, move the castings from the previous cooling water pool 303 to the next cooling water pool 303, and finally transfer the castings from the cooling water pool 303 to the cooling discharging conveyor 304.

[0104] For the cooling of the die castings, a plurality of cooling water pools 303 are provided, and the temperature of each cooling water pool 303 is set differently. The temperature setting needs to meet the temperature change curve of the casting material, which can ensure that the die castings maintain the ideal microstructure and physical properties during the cooling process, effectively avoiding the occurrence of problems such as deformation and cracking. The temperature setting process of each cooling water pool 303 is as follows:

[0105] The water temperature Ti of the i-th cooling water pool 303 is calculated by the following formula:

[0106] Ti = a * T env + (T0-T env )e -k(i*Δt) +b;

[0107] Wherein, a is a proportional adjustment coefficient, which is a constant; b is an offset adjustment coefficient, which is a constant, by introducing the adjustment coefficient, the actual temperature change curve of the casting can be more accurately fitted;

[0108] T0 is the initial temperature before the casting is cooled; T env is the ambient temperature; e is the base of the natural logarithm, which is approximately equal to 2.71828; k is the thermal conductivity of the casting;

[0109] t is time, Δt=t total / N, t total represents the total cooling time, t total =-1 / k*ln((T f -T env ) / (T0-T env )); T f is the final temperature after the casting is cooled.

[0110] After the casting is cooled in the cooling device 3 and output, manual edge removal is performed in the knocking edge removal device, and then polishing is performed in the polishing device 4. The knocking edge removal device in the embodiment is realized by using an existing device, but for the polishing device 4, in order to realize the processing of the debris generated by polishing, the applicant has developed a new structure, as shown in Figures 16 to 21 .

[0111] The polishing device 4 includes a polishing cavity 401, a polishing belt assembly 402, a polishing drive part 403, a water guide plate 404, a water tank 405, a water pump 406, a backflow channel 407, a debris tank 408, a guard plate 409, and a clean water tank 410. The water guide plate 404 is placed vertically, the upper part thereof is a vertical plate extending to the top of the polishing cavity 401, the lower part thereof is a horizontal plate extending to the bottom of the polishing cavity 401, the middle part thereof is an arc surface, and the arc surface is provided with a backflow hole 411. The polishing belt assembly 402 is installed in the polishing cavity 401 and is driven to operate by the polishing drive part 403, and the polishing belt assembly 402 is located on the front side of the water guide plate 404. The debris tank 408 is located on the rear side of the water guide plate 404, the two ends of the backflow channel 407 are respectively communicated with the backflow hole 411 and the debris tank 408, the side part of the debris tank 408 is provided with a detachable gate plate 412 and a filter plate 413, and the clean water tank 410 is adjacent to the filter plate 413 side of the debris tank 408. The water tank 405 is installed on the top of the water guide plate 404, the water outlet of the water tank 405 is arranged on the front side of the water guide plate 404, the water pump 406 is installed in the clean water tank 410, and the water outlet of the water pump 406 extends to the water tank 405 through a pipeline.

[0112] The use process of the polishing device 4 is as follows:

[0113] The worker polishes the finished casting on the polishing belt assembly 402, and the debris generated during polishing accumulates on the bottom of the polishing cavity 401, that is, the horizontal plate under the deflector 404. The water in the water tank 405 falls along the deflector 404 through the water outlet 414 of the water tank, and the accumulated debris is flushed into the backflow hole 411. The water carrying the debris flows through the backflow hole 411, the backflow channel 407, and enters the waste tank 408. The water in the waste tank 408 is filtered through the filter plate 413 and then enters the clean water tank 410. The water in the clean water tank 410 is lifted by the water pump 406 and then returns to the water tank 405. The water level in the water tank 405 needs to be replenished according to the actual water consumption, and a water replenishment pipe 311 and a water level sensor can be provided for automatic replenishment. When the waste tank 408 accumulates a large amount of waste, the gate plate 412 is pulled up to clean out the waste. When the filter plate 413 does not filter well, it can be removed for cleaning and replacement.

[0114] As a preferred, the guard plate 409 is installed on the outside of the polishing belt assembly 402 to block the sparks flying outward during polishing.

[0115] As shown in Figures 22 to 28 The vibration grinding device 5 includes a cleaning feeding conveyor belt 501, a cleaning pool 503, a cleaning gantry robot 504, a cleaning discharging conveyor belt 502, a cleaning air drying unit 505, a vibration base 506, and an annular grinding groove 507 installed above the vibration base 506. The tangential direction of the annular grinding groove 507 is provided with a discharge port, and the top surface of the grinding groove 507 is provided with an arc-shaped mesh flat plate 508. One end of the mesh flat plate 508 connects the tangential discharge port, and the other end is provided with a separable and inclined mesh climbing plate 509. During discharging, one end of the mesh climbing plate 509 connects the other end of the mesh flat plate 508, and the other end of the mesh climbing plate 509 connects the bottom surface of the grinding groove 507. During grinding, the mesh climbing plate 509 moves out of the grinding groove 507. The mesh diameter of the mesh flat plate 508 and the mesh climbing plate 509 is larger than the particle size of the grinding medium but smaller than the size of the casting. One end of the cleaning feeding conveyor belt 501 connects the tangential discharge port of the grinding groove 507, and the other end connects one end of the cleaning pool 503. The cleaning discharging conveyor belt 502 is provided at the other end of the cleaning pool 503. The cleaning discharging conveyor belt 502 is a mesh belt and is provided with a water receiving tray and a drain pipe below. The cleaning air drying unit 505 is provided above the cleaning discharging conveyor belt 502. The cleaning gantry robot 504 can vertically lift and horizontally move, and is used to convey the casting on the cleaning feeding conveyor belt 501 into the cleaning pool, and move the casting in the cleaning pool to the cleaning discharging conveyor belt 502.

[0116] The use process of the vibration grinding device 5 is as follows:

[0117] The finished castings are polished, and if they need to be polished, the workers throw the castings into the grinding tank 507 filled with grinding medium (such as steel balls), at this time the mesh climbing plate 509 is connected to the other end of the mesh flat plate 508;

[0118] The grinding tank 507 is started, and the surface of the casting becomes bright through vibration and the addition of polishing agents;

[0119] After the mesh climbing plate 509 is installed, the grinding tank 507 is started again, and the grinding medium passes through the mesh climbing plate 509 during vibration and falls from the mesh of the mesh climbing plate 509, the casting climbs the mesh climbing plate 509 during vibration and enters the cleaning upper conveying belt 501 along the mesh flat plate 508, then is cleaned in the water tank under the action of the cleaning gantry robot 504 and enters the cleaning lower conveying belt 502, the water remaining on the casting falls through the mesh of the conveying belt and is collected in the water collecting tray and discharged through the drain pipe, and the cleaned casting is dried by the cleaning drying unit 505.

[0120] The connection between the mesh climbing plate 509 and the mesh flat plate 508 can be manually installed or automatically lifted, and in this embodiment, the automatic lifting mode is adopted. The vibration grinding device 5 of this embodiment comprises a climbing plate moving part, the bottom surface of the grinding tank 507 is provided with a guide hole 510, the inner wall of the grinding tank 507 is provided with a guide rail groove 511 between the guide hole 510 and the other end of the mesh flat plate 508, the mesh climbing plate 509 is slidingly connected to the guide rail groove 511 and can slide along the guide rail groove 511, and is driven by the climbing plate moving part. The transmission structure of the mesh climbing plate 509 can be realized by the gear and rack mode. During grinding, the mesh climbing plate 509 is lowered below the bottom surface of the grinding tank 507; during discharging, the mesh climbing plate 509 is raised to connect with the other end of the mesh flat plate 508 by overcoming the resistance of the grinding medium.

[0121] As shown in Figure 25 The bottom surface of the grinding tank 507 is provided with a discharge port 512, and the bottom surface of the grinding tank 507 is slidingly connected with a closed discharge plate 513 and a discharge plate moving part, and the discharge plate moving part is used to drive the closed discharge plate 513 to translate. The plate surface of the closed discharge plate 513 is sequentially a filter screen section 5131, a closed section 5132 and an open section 5133 along the sliding direction, the filter screen section 5131 corresponds to the discharge port 512 and is used to filter out the debris in the grinding tank 507, the closed section 5132 corresponds to the discharge port 512 and is used to block the bottom surface discharge port 512 of the grinding tank 507, and the open section 5133 corresponds to the discharge port 512 and is used to tilt the grinding medium in the grinding tank 507. By providing a closed discharge plate 513, three working states of closing during grinding, filtering out debris during cleaning and tilting out grinding medium during non-operation can be realized.

[0122] The above examples are only used to explain the concept of the present application, and are not intended to limit the scope of protection of the present application. Any non-essential changes made to the present application using this concept shall fall within the scope of protection of the present application.

Claims

1. A die casting production line comprising a furnace system, a die casting machine, a cooling device, a trimming device, a polishing device and a vibration grinding device, characterized in that: the die casting machine comprises a feeding device, the feeding device comprises a pushing cavity, a pushing rod and a feeding mechanical arm, one end of the pushing cavity is open as an outlet for molten aluminum, the other end of the pushing cavity is open, the end of the pushing rod enters the inside of the pushing cavity through the open end, the top surface of the pushing cavity is open as an inlet for molten aluminum; an inlet filter is arranged outside the open top surface of the pushing cavity, the molten aluminum is filtered through the inlet filter and then enters the pushing cavity; a ladle is arranged on the feeding mechanical arm, the feeding mechanical arm pours the molten aluminum in the furnace system into the pushing cavity through the ladle.

2. A die casting line as claimed in claim 1, characterized in that the inlet filter comprises an outer cylinder and an inner cylinder, the feeding device comprises a filter screen replacement mechanical arm, the outer cylinder is hollow at its upper and lower ends, the diameters of the openings at the two ends of the outer cylinder are larger than the diameter of the open top surface of the pushing cavity, and the lower part of the outer cylinder is fixed outside the open top surface of the pushing cavity; the inner cylinder can be exactly fitted into the hollow part of the outer cylinder, the inner cylinder is also hollow at its upper and lower ends, the diameter of the upper opening is larger than that of the lower opening, and the diameter of the lower opening is equal to the diameter of the open top surface of the pushing cavity, a feeding filter screen is fixed on the lower opening of the inner cylinder in the hollow part of the inner cylinder, the feeding filter screen has a circular truncated cone structure with a small upper part and a large lower part, a lifting ring is arranged on the feeding filter screen to expose the outer cylinder, and the filter screen replacement mechanical arm can disassemble and assemble the feeding filter screen by grabbing the lifting ring; the inner diameter of the hollow part of the outer cylinder gradually decreases from the top to the bottom, forming an inverted circular truncated cone cavity, and the outer diameter of the inner cylinder gradually decreases from the top to the bottom, forming an inverted circular truncated cone.

3. A die casting line as claimed in claim 1, characterized in that the part of the pushing rod entering the pushing cavity is provided with an internal cooling water flow channel, the cooling water flow channel forms a cooling water inlet and a cooling water outlet at the side wall of the pushing rod.

4. A die casting line as claimed in claim 1, characterized in that the furnace system comprises a tiltable furnace, a holding furnace, a rotary table, a spray cooling unit and a waste liquid tank, the rotary table comprises a liftable base and a rotating disc above the base, the holding furnace and the waste liquid tank are respectively arranged on the two sides of the rotary table, a bag-shaped filter screen is installed on the rotating disc and can be arranged above the holding furnace or the waste liquid tank, the furnace is arranged on one side of the holding furnace, and after the furnace is tilted, the molten aluminum is poured into the holding furnace through the bag-shaped filter screen, and the spray cooling unit is arranged above the waste liquid tank and is used for cooling the bag-shaped filter screen; a magnet is arranged on the base and is used for attracting the rotating disc; a vibrator is arranged on the rotating disc and is used for vibrating the bag-shaped filter screen.

5. A die casting line as claimed in claim 1, characterized in that the die casting machine comprises a frame, a movable mold and a fixed mold, a cooling and lubricating device is arranged on the frame, the cooling and lubricating device comprises a cooling and lubricating rotating unit, a cooling and lubricating lifting unit and a cooling and lubricating seat, the cooling and lubricating rotating unit is fixed on the frame, the rotating end of the cooling and lubricating rotating unit is fixed with the cooling and lubricating lifting unit, the lifting end of the cooling and lubricating lifting unit is fixed with the cooling and lubricating seat, and after the movable mold and the fixed mold are separated, the cooling and lubricating seat can descend into the space between the movable mold and the fixed mold; one side of the cooling and lubricating seat is provided with a cooling water nozzle and a blowing port, the opposite side is provided with a lubricant nozzle and a blowing port, and the inside of the cooling and lubricating seat is provided with a cooling water pipeline, a lubricating liquid pipeline and an air duct. The bottom surface of the cooling and lubricating seat is provided with two liquid receiving discs respectively below the cooling water spray head and the lubricant spray head, the outer side of the liquid receiving disc is just fitted with the separated side wall of the movable die or the side wall of the fixed die, the cooling and lubricating seat is provided with a cooling water recovery flow channel and a lubricating liquid recovery flow channel, the bottom surface of the liquid receiving disc is an inclined surface inclined to the side of the cooling and lubricating seat, for guiding the cooling water in the disc into the cooling water recovery flow channel, and guiding the lubricating liquid in the disc into the lubricating liquid recovery flow channel; The die casting machine is provided with a waste liquid tank and a waste liquid discharge pipeline on the bottom surface between the movable die and the fixed die.

6. A die casting line as claimed in claim 1, characterized in that The cooling device comprises a transfer mechanical arm, a cooling upper loading conveying belt, N cooling water pools, a cooling lower loading conveying belt, a cooling air drying unit and a cooling truss mechanical arm; The transfer mechanical arm is used for taking the castings from the die casting machine and transferring them to the cooling upper loading conveying belt; The cooling upper loading conveying belt is used for moving the castings to the side of the cooling water pools; The N cooling water pools are arranged in a straight line, and each cooling water pool is provided with a temperature sensor, a drug concentration sensor and a heating device, the cooling water pool is connected with a circulating pipeline, and the circulating pipeline is provided with a filter, a water supplement pipe and a drug adding pipe; the temperature sensor is used for monitoring the water temperature of the cooling water pool in real time, the drug concentration sensor is used for monitoring the drug concentration of the cooling water pool in real time, the water in the cooling water pool is filtered to remove impurities through the filter, supplemented with water through the water supplement pipe, and supplemented with drug concentration through the drug adding pipe; The cooling lower loading conveying belt is a mesh belt, and is provided with a water receiving disc and a drain pipe below; The cooling air drying unit is located above the cooling lower loading conveying belt and is used for air drying the castings on the cooling lower loading conveying belt; The cooling truss mechanical arm can be vertically lifted and moved along the arrangement direction of the cooling water pools, and is used for transferring the castings on the cooling upper loading conveying belt to the cooling water pools, moving the castings from the previous cooling water pool to the next cooling water pool, and finally transferring the castings from the cooling water pools to the cooling lower loading conveying belt.

7. A die casting line as claimed in claim 1, characterized in that The polishing device comprises a polishing cavity, a polishing belt assembly, a polishing driving part, a water guide plate, a water tank, a water pump, a backflow channel, a waste chip tank, a guard plate and a clean water tank; The water guide plate is vertically placed, the upper part thereof is a vertical plate extending to the top of the polishing cavity, the lower part thereof is a horizontal plate extending to the bottom of the polishing cavity, and the middle part thereof is an arc surface, and the arc surface is provided with a backflow hole; The polishing belt assembly is installed in the polishing cavity and is driven to operate by the polishing driving part, and the polishing belt assembly is located on the front side of the water guide plate; The waste chip tank is located on the rear side of the water guide plate, the two ends of the backflow channel are respectively communicated with the backflow hole and the waste chip tank, and the side part of the waste chip tank is provided with a detachable gate plate and a filter plate; The clean water tank is adjacent to the filter plate side of the waste chip tank; The water tank is installed on the top of the water guide plate, the water outlet of the water tank is arranged on the front side of the water guide plate, the water pump is installed in the clean water tank, and the water outlet of the water pump extends to the water tank through a pipeline; The guard plate is installed on the outer side of the polishing belt assembly.

8. A die casting line as claimed in claim 1, characterized in that The vibration grinding device comprises a cleaning feeding conveyor belt, a cleaning pool, a cleaning gantry mechanical arm, a cleaning discharging conveyor belt, a cleaning air-drying unit, a vibration base and an annular grinding groove installed above the vibration base; The tangential direction of the annular grinding groove is provided with a discharging port, the top surface of the grinding groove is provided with an arc-shaped mesh flat plate, one end of the mesh flat plate is connected to the tangential discharging port, and the other end of the mesh flat plate is provided with a mesh climbing plate which is detachable and inclined; during discharging, one end of the mesh climbing plate is connected to the other end of the mesh flat plate, and the other end of the mesh climbing plate is connected to the bottom surface of the grinding groove; during grinding, the mesh climbing plate is moved out of the grinding groove; the mesh diameter of the mesh flat plate and the mesh climbing plate is larger than the particle diameter of the grinding medium and smaller than the size of the casting; One end of the cleaning feeding conveyor belt is connected to the tangential discharging port of the grinding groove, and the other end of the cleaning feeding conveyor belt is connected to one end of the cleaning pool; the other end of the cleaning pool is provided with the cleaning discharging conveyor belt, the cleaning discharging conveyor belt is a mesh belt, and a water receiving tray and a drain pipe are arranged below the cleaning discharging conveyor belt; the cleaning air-drying unit is arranged above the cleaning discharging conveyor belt; The cleaning gantry mechanical arm can be vertically lifted and horizontally moved, and is used for conveying the casting on the cleaning feeding conveyor belt into the cleaning pool and moving the casting in the cleaning pool to the cleaning discharging conveyor belt.

9. A die casting line as claimed in claim 8, characterised in that, The grinding groove is provided with a guide hole in the bottom surface, a guide rail groove is arranged between the guide hole and the other end of the mesh flat plate on the inner wall of the grinding groove, the mesh climbing plate is slidably connected to the guide rail groove and can slide along the guide rail groove, and the mesh climbing plate is driven by the climbing plate moving part; The bottom surface of the grinding groove is provided with a discharging port, the bottom surface of the grinding groove is slidably connected with a closed discharging plate and a discharging plate moving part, the plate surface of the closed discharging plate is sequentially provided with a filter screen section, a closed section and an opening section along the sliding direction, the filter screen section is used for filtering out the debris in the grinding groove when the filter screen section corresponds to the discharging port, the closed section is used for plugging the bottom surface discharging port of the grinding groove when the closed section corresponds to the discharging port, and the opening section is used for tilting the grinding medium in the grinding groove when the opening section corresponds to the discharging port.

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