Smelting furnace system for die-casting production line

Abstract

The utility model relates to the field of die-casting, in particular to a smelting furnace system for a die-casting production line, which comprises a smelting furnace, a holding furnace, a rotary table, a spray cooling unit and a waste liquid box, the rotary table comprises a base and a rotary table located above the base, the heat preservation furnace and the waste liquid box are located on the two sides of the rotary table respectively, a pocket-shaped filter screen capable of being located above the heat preservation furnace or the waste liquid box is installed on the rotary table, the smelting furnace is located on one side of the heat preservation furnace, and molten aluminum in the smelting furnace is poured into the heat preservation furnace through the pocket-shaped filter screen. The spray cooling unit is positioned above the waste liquid box and is used for cooling the pocket-shaped filter screen; the smelter has the advantages that the pocket-shaped filter screen is arranged above the heat preservation furnace, in the process that the smelter pours liquid, dregs in the liquid are filtered out, and meanwhile the filtered dregs are rotated to the other side to be cooled, so that the dregs are recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the die casting field especially relates to a furnace system for die casting production line. BACKGROUND

[0002] The die casting machine is a kind of precision forming equipment for manufacturing metal parts, by injecting molten metal liquid into mold cavity, the shape and size required are formed. Die casting technology is widely used in automobile, aerospace, electronics, home appliances and other industries, because this process can efficiently produce complex structure, high surface quality and high dimensional accuracy parts.

[0003] As Figure 1 And Figure 2 As shown in the schematic diagram of the structure of aluminum die casting equipment, including movable die and fixed die. The forming process of die casting is as follows: the furnace melts aluminum ingot, as shown in Figure 3 The molten aluminum liquid is poured into the pushing cavity, the movable die and the fixed die are closed, and the pushing rod pushes the aluminum liquid in the pushing cavity into the fixed die and the movable die to form the required casting, the casting is taken down after forming, and is sent into the edge removing station after cooling, and the edge removing process is carried out by manual or machine (after die casting, the edge of die casting will be a circle of burr or flash), and then enters the polishing equipment for polishing and polishing, and finally, according to the customer's requirement, sand vibration is carried out to increase the light.

[0004] The above-mentioned equipment production line has the following defects: during the melting process of the furnace, slag may be generated, which is mainly due to the oxidation of impurities in the aluminum ingot at high temperature or the compound formed by the reaction with other elements, such as aluminum oxide, if these slag is not removed, it may mix into the molten aluminum liquid, affecting the quality of the final casting, such as reducing the strength, corrosion resistance and other properties of the casting, at present, refining agent is mainly added during melting, and chemical method is used to remove, but the removal is not complete, and manual slag removal method is also used, although the effect is good, but the danger is too high.

[0005] Based on this, the case is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a kind of furnace system for die casting production line, to solve the problems in the background art.

[0007] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0008] A furnace system for die casting production line, comprising a furnace and a holding furnace, further comprising a rotary table, a spray cooling unit and a waste liquid tank; the rotary table comprises a base and a rotary disc above the base, the holding furnace and the waste liquid tank are respectively located on both sides of the rotary table, a bag-shaped filter screen capable of being located above the holding furnace or the waste liquid tank is installed on the rotary disc, the furnace is located on one side of the holding furnace, and the molten aluminum in the furnace is poured into the holding 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.

[0009] Further, the base is provided with an electromagnet for attracting the rotary disc.

[0010] Further, the rotary disc is provided with a vibrator for vibrating the bag-shaped filter screen.

[0011] Further, the furnace is an automatic pouring furnace.

[0012] Further, the base is a lifting base.

[0013] The die casting production line has the advantages that the bag-shaped filter screen is arranged above the holding furnace, the dregs in the liquid are filtered out during the pouring process of the furnace, and the filtered dregs are rotated to the other side for cooling, so that the dregs can be recycled. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the die casting machine in the prior art;

[0015] Figure 2 It is a front view schematic view of Figure 1 ;

[0016] Figure 3 It is an enlarged schematic view of A part in Figure 1 ;

[0017] Figure 4 It is a plane layout schematic view of the die casting production line in the embodiment;

[0018] Figure 5 It is a layout schematic view of the furnace system in the embodiment;

[0019] Figure 6 It is a three-dimensional structure schematic view of the tiltable furnace in the embodiment;

[0020] Figure 7 It is a structure schematic view of the pushing cavity and the feeding filter part in the embodiment;

[0021] Figure 8 It is an assembly completion schematic view of Figure 7 ;

[0022] Figure 9This is a schematic diagram of the cooling water flow channel arrangement inside the push rod in the embodiment;

[0023] Figure 10 This is a schematic diagram of the feeding device in the embodiment;

[0024] Figure 11 This is a schematic diagram of the installation of the cooling and lubrication device on the die-casting machine in the embodiment;

[0025] Figure 12 This is a schematic diagram of the cooling and lubrication device in the embodiment;

[0026] Figure 13 for Figure 11 Enlarged schematic diagram of part B in the diagram;

[0027] Figure 14 This is a schematic diagram of the cooling device in the embodiment;

[0028] Figure 15 This is a schematic diagram of the cooling water tank of the cooling device in the embodiment.

[0029] Figure 16 , Figure 17 , Figure 18 , Figure 19 These are schematic diagrams of the grinding device from different perspectives in the embodiments;

[0030] 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;

[0031] Figure 22 This is a schematic diagram of the structure of the vibratory grinding device in the embodiment;

[0032] Figure 23 This is a three-dimensional structural diagram of the grinding tank in the embodiment;

[0033] Figure 24 This is a top view of the grinding tank in the embodiment, where the mesh ramp plate is not raised.

[0034] 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;

[0035] Figure 26 for Figure 23 A schematic diagram of the structure from another perspective;

[0036] Figure 27 This is a schematic diagram of the driving structure of the mesh climbing plate in the embodiment;

[0037] 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.

[0038] Brief Description of Drawings

[0039] 1. A furnace system; 101, a furnace; 102, a holding furnace; 103, a rotary table; 1031, a liftable base; 1032, a rotary disc; 1033, a scoop-shaped filter screen; 1034, an electromagnet; 1035, a vibrator; 104, a spray cooling unit; 105, a waste liquid tank;

[0040] 2. A die casting machine; 201, a movable mold; 202, a fixed mold; 203, a feeding device; 2031, a pushing cavity; 2032, a pushing rod; 2033, a feeding mechanical arm; 2034, an outer cylinder; 2035, an inner cylinder; 2036, a filter screen replacement mechanical arm; 2037, a feeding filter screen; 2038, a lifting ring; 2039, a cooling water flow channel; 204, a frame; 205, a cooling and lubricating device; 2051, a cooling and lubricating rotating unit; 2052, a cooling and lubricating lifting unit; 2053, a cooling and lubricating seat; 2054, a cooling water spray head; 2055, a lubricant spray head; 2056, a blowing port; 2057, a liquid receiving disc; 2058, a waste liquid discharge pipeline;

[0041] 3. A cooling device; 301, a transfer mechanical arm; 302, a cooling upper feeding conveyor belt; 303, a cooling water pool; 304, a cooling lower feeding conveyor belt; 305, a cooling air drying unit; 306, a cooling gantry mechanical arm; 307, a temperature sensor; 308, a drug concentration sensor; 309, a heating device; 310, a filter; 311, a water replenishing pipe; 312, a drug adding pipe;

[0042] 4. A polishing device; 401, a polishing cavity; 402, a polishing belt assembly; 403, a polishing driving part; 404, a water guide plate; 405, a water tank; 406, a water pump; 407, a backflow channel; 408, a waste chip groove; 409, a guard plate; 410, a clean water groove; 411, a backflow hole; 412, a gate plate; 413, a filter plate; 414, a water outlet of the water tank;

[0043] 5. A vibration grinding device; 501, a cleaning upper feeding conveyor belt; 502, a cleaning lower feeding conveyor belt; 503, a cleaning pool; 504, a cleaning gantry mechanical arm; 505, a cleaning air drying unit; 506, a vibration base; 507, a grinding groove; 508, a mesh flat plate; 509, a mesh climbing plate; 510, a guide hole; 511, a guide rail groove; 512, a discharging port; 513, a closed discharging plate; 5131, a filter screen section; 5132, a closed section; 5133, an open section;

[0044] 6. An edge removing device. DETAILED DESCRIPTION

[0045] The utility model is further described in detail below in combination with the embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0046] The embodiment provides a die casting production line, as shown in the drawings, which comprises, in sequence along a technological process, a furnace system 1, a die casting machine 2, a cooling device 3, an edge removing device 6, a polishing device 4 and a vibration grinding device 5. Figure 4 After the aluminum ingot is melted into aluminum liquid by the furnace system 1, the aluminum liquid is poured into the die casting machine 2 for die casting forming, the formed casting is cooled first, then is subjected to edge knocking, polishing and polishing treatment, and finally is subjected to light enhancement treatment in the vibration grinding device 5 according to customer requirements.

[0047] As shown in the drawings, the furnace system 1 comprises a tiltable furnace 101, a holding furnace 102, a rotary table 103, a spray cooling unit 104 and a waste liquid tank 105. Figure 5 Figure 6 The rotary table 103 comprises a liftable base 1031 and a rotary disc 1032 located above the base, the holding furnace 102 and the waste liquid tank 105 are located on the two sides of the rotary table 103 respectively, the rotary disc 1032 is provided with a bag-shaped filter screen 1033 which can be located 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 bag-shaped filter screen 1033, and the spray cooling unit 104 is located above the waste liquid tank 105 and is used for cooling the bag-shaped filter screen 1033.

[0048] The use of the furnace system 1 comprises the following process: a worker puts an aluminum ingot into the furnace 101, the furnace 101 melts the aluminum ingot and then tilts, at this time, the bag-shaped filter screen 1033 is driven by the rotary disc 1032 to be located above the holding furnace 102, the aluminum liquid poured out passes through the bag-shaped filter screen 1033 and then enters the holding furnace 102, most of the dregs in the aluminum liquid are left in the bag-shaped filter screen 1033, the rotary disc 1032 rotates the bag-shaped filter screen 1033 to be located above the waste liquid tank 105, the spray cooling unit 104 sprays water to cool the dregs, the waste liquid flows into the waste liquid tank 105, and the cooled dregs can be taken away for recycling.

[0049] ​As preferred, the base 1031 is provided with an electromagnet 1034 for attracting the rotating disc 1032, and the rotating disc 1032 is provided with a vibrator 1035 for vibrating the filter screen 1033. After the electromagnet 1034 attracts the rotating disc 1032, the molten aluminum can be kept stable during pouring, so as to avoid tilting of the rotating disc 1032. The vibrator 1035 can vibrate the filter screen 1033, so as to promote separation of the molten aluminum and the dregs in the filter screen 1033. Due to the provision of the vibrator 1035, the electromagnet 1034 can better keep the rotating disc 1032 stable.

[0050] The base 1031 is provided to be liftable, so that the rotating table 103 can be adapted to different types of the furnace 101.

[0051] As shown in Figures 7 to 10 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, serving as a molten aluminum outlet. The other end of the pushing cavity 2031 is open, and the end of the pushing rod 2032 enters the inside of the pushing cavity 2031 through the other end. The top surface of the pushing cavity 2031 is open, serving as a molten aluminum inlet. The top surface of the pushing cavity 2031 is externally provided with an inlet filter part. After the molten aluminum is filtered by the inlet filter part, 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.

[0052] The inlet filter part 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 greater than that 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 greater than that of the lower end opening. The diameter of the lower end opening is equal to that of the top surface opening of the pushing cavity 2031. The lower end opening of the inner cylinder 2035 is fixed with a feeding filter screen 2037 located 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. The feeding filter screen 2037 is externally provided with a lifting ring 2038. 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 splashing of the molten aluminum, the outer cylinder 2034 and the inner cylinder 2035 have a certain height, which is at least higher than that of the pushing cavity 2031.

[0053] The use of the feeding device 203 includes: the inner cylinder 2035 is installed in the outer cylinder 2034, the feeding mechanical arm 2033 scoops the molten aluminum in the holding furnace 102 by a 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, and 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 the dregs in the inner cylinder 2035 are more, the filter screen replacement mechanical arm 2036 lifts the inner cylinder 2035 by the grabbing lifting ring 2038, removes the inner cylinder 2035, cleans the feeding filter screen 2037, and then installs the inner cylinder 2035 in the outer cylinder 2034.

[0054] 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 falling, the inner cylinder 2035 will be stuck, resulting in misinstallation. 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 falling to prevent the occurrence of the sticking phenomenon.

[0055] As a preferred, the part of the pushing rod 2032 entering the pushing cavity 2031 is provided with an embedded cooling water channel 2039, and the cooling water channel 2039 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 in the pushing rod 2032 to appropriately reduce the temperature of the boiling metal liquid and prevent the occurrence of the case that the die casting is hollow due to the 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 molten aluminum to ensure the quality of the die casting.

[0056] As Figures 10 to 12As shown, the die casting machine 2 comprises a frame 204, a movable die 201 and a fixed die 202, the frame 204 is provided with a cooling and lubricating device 205, the cooling and lubricating device 205 comprises 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 the cooling and lubricating rotating unit 2051 is fixed with the cooling and lubricating lifting unit 2052, 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 the movable die 201 and the fixed die 202. One side of the cooling and lubricating seat 2053 is provided with a cooling water spray head 2054 and a blowing port 2056, and the opposite side is provided with a lubricant spray head 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 spray head 2054, the lubricating liquid pipeline is used to supply external lubricating liquid to the lubricant spray head 2055, and the air duct is used to supply air generated by an external fan to the blowing port 2056.

[0057] The bottom surface of the cooling and lubricating seat 2053 is provided with two liquid receiving discs 2057 located below the cooling water spray head 2054 and the lubricant spray head 2055 respectively, the outer side of the liquid receiving disc 2057 is just in contact with the side wall of the movable die 201 or the side wall of the fixed die 202 after separation, the cooling and lubricating seat 2053 is provided with a cooling water recovery flow channel and a lubricating liquid recovery flow channel, the bottom surface of the liquid receiving disc 2057 is an inclined surface inclined to the side of the cooling and lubricating seat 2053, for guiding the cooling water in the disc to enter the cooling water recovery flow channel, and guiding the lubricating liquid in the disc to enter the lubricating liquid recovery flow channel.

[0058] The use process of the cooling and lubricating device 205 is as follows:

[0059] After the die casting is completed, the movable die 201 and the fixed die 202 are opened, and the casting is taken down, the cooling and lubricating lifting unit 2052 drives the cooling and lubricating seat 2053 to descend between the movable die 201 and the fixed die 202, at this time, the cooling water spray head 2054 is aligned with the movable die 201, and the lubricant spray head 2055 is aligned with the fixed die 202, the cooling water spray head 2054 sprays cooling water to cool the movable die 201, the sprayed cooling water is recovered and guided through the liquid receiving disc 2057, and then enters the cooling water recovery flow channel;

[0060] After the movable mold 201 is cooled, the cooling and lubricating rotating unit 2051 rotates the cooling and lubricating seat 2053, so that the cooling water spray head 2054 is aimed at the fixed mold 202, and the lubricant spray head 2055 is aimed at the movable mold 201. At this time, the air blowing port 2056 on the side of the movable mold 201 blows air to dry the movable mold 201. After drying, the movable mold 201 is lubricated with lubricating liquid, and the liquid collecting tray 2057 below recovers the lubricating liquid to the lubricating liquid recovery channel. At this time, the cooling water spray head 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 collecting tray 2057, and then enters the cooling water recovery channel.

[0061] After the movable mold 201 is cooled, the cooling and lubricating rotating unit 2051 rotates the cooling and lubricating seat 2053, so that the cooling water spray head 2054 is aimed at the movable mold 201, and the lubricant spray head is aimed at the fixed mold 202. At this time, the air blowing port 2056 on the side of the movable mold 201 blows air to dry the movable mold 201. After drying, the movable mold 201 is lubricated with lubricating liquid, and the liquid collecting tray 2057 below recovers the lubricating liquid to the lubricating liquid recovery channel. At this time, the cooling water spray head 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 collecting tray 2057, and then enters the cooling water recovery channel.

[0062] After the movable mold 201 is cooled, the cooling and lubricating rotating unit 2051 rotates the cooling and lubricating seat 2053, so that the cooling water spray head 2054 is aimed at the movable mold 201, and the lubricant spray head is aimed at the fixed mold 202. At this time, the air blowing port 2056 on the side of the movable mold 201 blows air to dry the movable mold 201. After drying, the movable mold 201 is lubricated with lubricating liquid, and the liquid collecting tray 2057 below recovers the lubricating liquid to the lubricating liquid recovery channel. At this time, the cooling water spray head 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 collecting tray 2057, and then enters the cooling water recovery channel.

[0063] Although the liquid collecting tray 2057 is provided at the bottom of the cooling and lubricating seat 2053, it is inevitable that lubricating liquid and cooling water will still accumulate on the bottom surface of the die casting machine 2 between the movable mold 201 and the fixed mold 202. As shown in Figure 13 Preferably, a waste liquid tank and a waste liquid discharge pipeline 2058 are provided on the bottom surface of the die casting machine 2 between the movable mold 201 and the fixed mold 202, for discharging unrecycled lubricating liquid and cooling water.

[0064] As shown in 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.

[0065] 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:

[0066] The water temperature Ti of the ith cooling water pool 303 is calculated by the following formula:

[0067] Ti = a * T env + (T0-T env )e -k(i*Δt) +b;

[0068] 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;

[0069] T0 is the initial temperature before the casting is cooled; T env is the ambient temperature; e is the base of natural logarithm, which is approximately equal to 2.71828; k is the thermal conductivity of the casting;

[0070] 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 )); f T is the final temperature after the casting is cooled.

[0071] After the casting is cooled and output in the cooling device 3, 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 polishing generated debris, the applicant has developed a new structure, as shown in Figures 16 to 21 .

[0072] 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 waste debris tank 408, a guard plate 409, and a clean water tank 410. The water guide plate 404 is vertically placed, 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 at the front side of the water guide plate 404. The waste debris tank 408 is located at 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 waste debris tank 408, the side part of the waste 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 waste 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 at 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.

[0073] The use process of the polishing device 4 is as follows:

[0074] The worker polishes the finished casting on the polishing belt assembly 402, and the debris generated during polishing accumulates at 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.

[0075] As a preferred, the guard plate 409 is installed on the outside of the polishing belt assembly 402 to block sparks flying outward during polishing.

[0076] 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.

[0077] The use process of the vibration grinding device 5 is as follows:

[0078] 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;

[0079] The grinding tank 507 is started, and the surface of the casting becomes bright through vibration and the addition of polishing agents;

[0080] 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 in the vibration process and falls from the mesh of the mesh climbing plate 509, the casting climbs the mesh climbing plate 509 and enters the cleaning upper conveying belt 501 along the mesh flat plate 508 in the vibration process, and then is cleaned in the water pool under the action of the cleaning gantry robot 504 and enters the cleaning lower conveying belt 502, the residual water on the casting falls through the conveying belt mesh and is collected in the water collecting tray and discharged through the drain pipe, and the cleaned casting is air dried by the cleaning air drying unit 505.

[0081] 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 includes 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.

[0082] As shown in Figure 25 The bottom surface of the grinding tank 507 is provided with a discharge port 512, the outer wall of 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 in the sliding direction, the filter screen section 5131 is used to filter out the debris in the grinding tank 507 when corresponding to the discharge port 512, the closed section 5132 is used to block the bottom surface discharge port 512 of the grinding tank 507 when corresponding to the discharge port 512, and the open section 5133 is used to tilt the grinding medium in the grinding tank 507 when corresponding to the discharge port 512. 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.

[0083] 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 furnace system for a die casting line, comprising a melting furnace and a holding furnace, characterized in that, The device further comprises a rotating table, a spray cooling unit and a waste liquid tank. The rotating table comprises a base and a rotating disc above the base, the heat preservation furnace and the waste liquid tank are respectively arranged on two sides of the rotating table, a bag-shaped filter screen capable of being arranged above the heat preservation furnace or the waste liquid tank is arranged on the rotating disc, the melting furnace is arranged on one side of the heat preservation furnace, molten aluminum in the melting furnace is poured into the heat preservation furnace through the bag-shaped filter screen, and the spray cooling unit is arranged above the waste liquid tank and used for cooling the bag-shaped filter screen.

2. A furnace system for a die casting line as claimed in claim 1, characterized in that An electromagnet is arranged on the base and used for attracting the rotating disc.

3. A furnace system for a die casting line as claimed in claim 1, characterized in that A vibrator is arranged on the rotating disc and used for vibrating the bag-shaped filter screen.

4. A furnace system for a die casting line as defined in claim 1, characterized in that The melting furnace is an automatic pouring melting furnace.

5. A furnace system for a die casting line as defined in claim 1, characterized in that The base is a lifting base.

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