CN115592093A

CN115592093A - Aluminum alloy casting system and method

Info

Publication number: CN115592093A
Application number: CN202211242254.5A
Authority: CN
Inventors: 吴茂宇; 潘晶晶; 钱舒
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-01-13

Abstract

The invention relates to the technical field of aluminum alloy casting application, in particular to an aluminum alloy casting system and a casting method, which comprises a bottom shell and a processing device, wherein the bottom shell is provided with a plurality of grooves; a cooling device is arranged in the pressing platform, the pressing platform is fixedly arranged at the upper part of the bottom shell, a pressing groove is formed in the upper part of the pressing platform, and a feeding hole and an overflow hole are formed in two sides of the pressing groove respectively; the pressing device is arranged above the pressing platform; the gas storage device is arranged below the pressing platform; the feeding device is arranged at one side of the gas storage device; the observation device is arranged at the upper part of the feeding device; the sealing device is arranged on one side of the pressing platform, which is provided with the feeding hole; the plugging device is arranged on one side of the pressing platform, which is provided with the overflow outlet; the feed back monitoring device is arranged below the plugging device; the air return device is arranged between the gas storage device and the feeding device, so that the property of the raw material to be added is ensured not to be changed during processing, and simultaneously, the non-rod-shaped part without the air outlet can be cast.

Description

Aluminum alloy casting system and method

Technical Field

The invention relates to the technical field of aluminum alloy casting application, in particular to an aluminum alloy casting system and a casting method.

Background

Aluminum alloy is an alloy based on aluminum with a certain amount of other alloying elements added, and is one of light metal materials. The existing casting process is mostly horizontal continuous casting, and the horizontal continuous casting has the following advantages: 1. because the metal is cooled rapidly, the crystallization is compact, the structure is uniform, and the mechanical property is better; 2. during continuous casting, a casting is not provided with a riser of a pouring system, so that a continuous ingot is not required to be cut and trimmed during rolling, metal is saved, and the yield is improved; 3. the working procedures are simplified, and modeling and other working procedures are avoided, so that the labor intensity is reduced; the required production area is greatly reduced; 4. the continuous casting production is easy to realize mechanization and automation, and the continuous casting and rolling can be realized during ingot casting, thereby greatly improving the production efficiency. At present, the conventional horizontal continuous casting device is only suitable for casting common metal materials, but not suitable for the production line type efficient continuous casting of aluminum alloys, and how to design the horizontal continuous casting device for aluminum alloys is urgent.

Chinese patent application CN114682751A discloses a horizontal continuous casting device based on high-silicon aluminum alloy, which comprises a hydraulic aluminum alloy pouring melting furnace, a liquid transferring chute, a heat preservation pouring furnace, a servo control valve, a pouring chute, a horizontal heat preservation furnace shell, a crystallizer, a casting machine and a cutting machine; the hydraulic aluminum alloy pouring furnace, the liquid transfer chute, the heat preservation pouring furnace, the pouring chute and the horizontal heat preservation furnace shell are sequentially connected, aluminum alloy melt flows in the hydraulic aluminum alloy pouring furnace, the liquid transfer chute, the heat preservation pouring furnace, the pouring chute and the horizontal heat preservation furnace shell sequentially, a servo control valve is installed on the heat preservation pouring furnace and used for controlling the flow/blocking of the aluminum alloy melt, a crystallizer is installed on the end face of one end of the horizontal heat preservation furnace shell, the aluminum alloy melt flows out of the crystallizer and enters the crystallizer for molding, the casting machine is used for leading out a molding rod, and the cutting machine is used for cutting off the molding rod.

Although the scheme realizes horizontal continuous casting of the aluminum alloy and avoids the situation that a casting is provided with a riser, the aluminum alloy finished product cannot be cast, wherein the aluminum alloy finished product refers to a non-rod-shaped piece which is made of the aluminum alloy and can be directly applied to other fields, and when the aluminum alloy is cast, the aluminum alloy at the feeding end is influenced by a cooling device at the casting position to reduce the temperature of the molten metal of the aluminum alloy at the feeding position, so that the metal property is changed.

Disclosure of Invention

In order to solve the problems, the feeding device discharges molten aluminum alloy into a pressing groove from a feeding hole through a sealing device, the molten aluminum alloy in the pressing groove overflows from an overflow outlet and is monitored by a temperature sensor, the feeding device stops feeding, the sealing device starts to seal the feeding hole and the feeding device, meanwhile, an air returning device assists the feeding device to draw back the molten aluminum alloy, the pressing device seals the molten aluminum alloy in the pressing groove and seals the feeding hole and the overflow outlet, the sealing device starts to enhance the sealing performance of the pressing device on the molten aluminum alloy in the pressing groove, the air returning device discharges air in an air storage tank into a U-shaped pipe, the molten aluminum alloy reserved in the U-shaped pipe is pushed into the feeding device, a cooling device cools the molten aluminum alloy in the pressing groove, the pressing device is lifted after cooling is completed, an aluminum alloy finished product is taken out, the properties of raw materials to be added during processing are guaranteed not to change, and meanwhile, a non-rod-shaped part without an air outlet hole can be cast.

In order to solve the problems of the prior art, the invention adopts the technical scheme that:

an aluminum alloy casting system comprises a bottom shell and a processing device; the processing device comprises a feeding device, a gas storage device, an observation device, a sealing device, a pressing platform, a plugging device, a feed back monitoring device and a gas return device; a cooling device is arranged in the pressing platform, the pressing platform is fixedly arranged at the upper part of the bottom shell, a pressing groove is formed in the upper part of the pressing platform, a feeding hole and an overflow hole are formed in two sides of the pressing groove respectively, and the pressing groove is used for receiving molten aluminum alloy raw materials; the pressing device is arranged above the pressing platform and used for sealing the aluminum alloy in the pressing groove; the gas storage device is arranged below the pressing platform and used for storing inert gas; the feeding device is arranged on one side of the gas storage device and is used for feeding materials into the pressing groove; the observation device is arranged at the upper part of the feeding device and is used for observing the liquid level height of the molten aluminum alloy in the feeding device; the sealing device is arranged on one side of the pressing platform, which is provided with the feeding hole, and is used for sealing the feeding hole; the blocking device is arranged on one side of the pressing platform, which is provided with the overflow port, and is used for assisting the pressing device to seal the pressing groove; the feed back monitoring device is arranged below the plugging device; the air return device is arranged between the gas storage device and the feeding device.

Preferably, the feeding device comprises a feeding tank, a first extension pipe, a pump body, a supply assembly and a second extension pipe; the feeding box is arranged below the pressing platform; the first extension pipe is arranged at the upper part of the feeding box in a penetrating way; the pump body is fixedly arranged at one end of the first extension pipe, which is far away from the feeding box; the supply assembly is arranged on the side wall of the supply box; and two ends of the second extension pipe are respectively connected with the pump body and the sealing device.

Preferably, the gas storage device comprises a gas storage tank, a gas supplementing pipe, a first switch valve and a gas return assembly; the gas storage tank is arranged on one side of the feeding tank; two ends of the air supply pipe are respectively connected with the gas storage tank and the second extension pipe; the first switch valve is arranged at one end of the air supplementing pipe close to the second extension pipe; and two ends of the air return component are respectively connected with the gas storage tank and the feeding tank.

Preferably, the air return device comprises a second switch valve and a first air return pipe; two ends of the first air return pipe are respectively connected with the air return monitoring device and the air storage tank; the second switch valve is arranged on one side of the first gas return pipe close to the backflow monitoring device.

Preferably, the sealing device comprises a first sleeve, a first linear driver, a first pushing member and a first plugging member; the first sleeve is arranged on one side of the feed port along the opening direction of the feed port, one end of the first sleeve is fixedly connected with the feed port, and the first sleeve is communicated with the feed port; the first linear driver is arranged at one end of the first sleeve pipe, which is far away from the feeding hole, and the output end of the first linear driver points to the feeding hole; the first pushing piece is fixedly arranged on the output end of the first linear driver and can be arranged in the first sleeve in a sliding manner along the length direction of the first sleeve; the first plugging piece is arranged in the first sleeve on one side, away from the first linear driver, of the first pushing piece in a sliding mode along the length direction of the first sleeve, and a first gap is reserved between the first plugging piece and the first pushing piece.

Preferably, the plugging device comprises a second linear driver, a second pushing piece, a second plugging piece, a vent groove and a second sleeve; the second sleeve is arranged on one side of the pressing platform, which is provided with the overflow outlet, along the opening direction of the overflow outlet, and one end of the second sleeve is connected with the overflow outlet; the second linear driver is arranged at one end of the second sleeve far away from the overflow port; the second pushing piece is fixedly arranged on the output end of the second linear driver and can be arranged in the second sleeve in a sliding manner along the length direction of the second sleeve; the second plugging piece is arranged on one side, far away from the second linear driver, of the second pushing piece, the second plugging piece is arranged in the second sleeve in a sliding mode along the length direction of the second sleeve, and a second gap is reserved between the second plugging piece and the second pushing piece; the air discharge groove is formed in the second blocking piece and used for discharging redundant air in the second sleeve pipe.

Preferably, the feed back monitoring device comprises a temperature sensor, a U-shaped pipe and a third switch valve; two ends of the U-shaped pipe are respectively connected with the second sleeve and the feeding box; the temperature sensor is arranged at the bent part of the U-shaped pipe; the number of the third switch valves is two, and the third switch valves are respectively arranged on the U-shaped pipes on the upper side and the lower side of the second switch valve.

Preferably, the air return assembly comprises a second air return pipe and a one-way valve; the one-way valve is fixedly arranged at the upper part of the feeding box; two ends of the second air return pipe are respectively connected with the one-way valve and the gas storage tank.

Preferably, the observation device comprises a bending mirror, a camera and a marker; one end of the bending mirror is arranged at the upper part of the feeding box; the camera is fixedly arranged at one end of the bending mirror, which is far away from the feeding box; the marker is fixedly arranged on the side wall of the first extension pipe in the feed tank.

The invention also relates to an aluminum alloy casting method, which comprises the following specific steps:

s1, discharging molten aluminum alloy into a pressing groove from a feed inlet through a sealing device by a feeding device;

s2, the molten aluminum alloy in the pressing groove overflows from the overflow outlet and is monitored by a temperature sensor, and the feeding device stops feeding;

s3, starting a sealing device to seal and plug the feeding hole and the feeding device, and simultaneously, using an air return device to assist the feeding device to draw back the molten aluminum alloy;

s4, sealing the molten aluminum alloy in the pressing groove by the pressing device, simultaneously plugging the feed inlet and the overflow outlet, and starting the blocking device to enhance the sealing performance of the pressing device on the molten aluminum alloy in the pressing groove;

s5, the air in the air storage tank is discharged into a U-shaped pipe by the air return device, so that the molten aluminum alloy remained in the U-shaped pipe is pushed into the feeding device;

and S6, cooling the molten aluminum alloy in the pressing groove by using a cooling device, lifting the pressing device after cooling is completed, and taking out the aluminum alloy finished product.

Compared with the prior art, the beneficial effect of this application is:

the feeding device discharges molten aluminum alloy into the pressing tank from the feeding hole through the sealing device, the molten aluminum alloy in the pressing tank overflows from an overflow outlet and is monitored by the temperature sensor, the feeding device stops feeding, the sealing device starts to seal the feeding hole and the feeding device, meanwhile, the air return device assists the feeding device to pump the molten aluminum alloy back, the pressing device seals the molten aluminum alloy in the pressing tank, the feeding hole and the overflow outlet are sealed simultaneously, the sealing device starts to enhance the sealing performance of the pressing device on the molten aluminum alloy in the pressing tank, the air return device discharges the gas in the gas storage tank into a U-shaped pipe, the molten aluminum alloy remained in the U-shaped pipe is pushed into the feeding device, the cooling device cools the molten aluminum alloy in the pressing tank, the pressing device lifts after cooling is completed, finished aluminum alloy pieces are taken out, the properties of raw materials to be added in the processing process are guaranteed to be unchanged, and meanwhile, non-rod-shaped pieces without gas outlet holes can be cast.

Drawings

FIG. 1 is a schematic perspective view of an aluminum alloy casting system;

FIG. 2 is a first schematic perspective view of an aluminum alloy casting system with a bottom shell partially removed;

FIG. 3 is a second schematic perspective view of an aluminum alloy casting system with a bottom shell partially removed;

FIG. 4 is a first schematic perspective view of an aluminum alloy casting system with the bottom shell and the hold-down device removed;

FIG. 5 is a second schematic perspective view of an aluminum alloy casting system with the bottom shell and the pressing apparatus removed;

FIG. 6 is a schematic perspective view of an aluminum alloy casting system with the pressing platform, bottom shell and pressing apparatus removed;

FIG. 7 is an enlarged partial schematic view at A of FIG. 6 of an aluminum alloy casting system;

FIG. 8 is a schematic perspective view of an aluminum alloy casting system with the second sleeve, pressing platform, bottom shell, and pressing apparatus removed;

FIG. 9 is an enlarged partial schematic view at B of FIG. 8 of an aluminum alloy casting system;

FIG. 10 is an enlarged partial schematic view at C of FIG. 8 of an aluminum alloy casting system;

FIG. 11 is a schematic perspective view of an aluminum alloy casting system with the second sleeve, first sleeve, pressing platform, bottom shell, and pressing apparatus removed;

FIG. 12 is a schematic perspective view of an aluminum alloy casting system with the second block piece, second sleeve, first sleeve, pressing platform, bottom shell, and pressing apparatus removed;

FIG. 13 is a schematic perspective view of a supply apparatus of an aluminum alloy casting system with the viewing apparatus removed with the supply tank and the replenishment assembly.

The reference numbers in the figures are:

1-a bottom shell;

2-a processing device;

21-a feeding device; 211-a supply tank; 212-a first extension tube; 213-a pump body; 214-a replenishment assembly; 215-a second extension tube;

22-a gas storage means; 221-a gas storage tank; 222-air supplement pipe; 223-a first on-off valve; 224-a return air assembly; 2241-a second air return pipe; 2242-a one-way valve;

23-an observation device; 231-bending mirror; 232-camera; 233-a marker;

24-a sealing device; 241-a first sleeve; 242-a first linear driver; 243-a first urging member; 244 — a first closure;

25-a pressing device;

26-a pressing platform; 261-feed inlet; 262-overflow outlet;

27-a plugging device; 271-a second linear drive; 272-a second pusher; 273-a second closure; 274-an exhaust groove; 275-a second sleeve;

28-a feed back monitoring device; 281-temperature sensor; 282-U-shaped tubes; 283-a third on-off valve;

29-air return device; 291-second on-off valve; 292-first return air pipe.

Detailed Description

For a better understanding of the features and technical solutions of the present invention, as well as the specific objects and functions attained by the present invention, reference is made to the accompanying drawings and detailed description of the invention.

As shown in fig. 1-13: an aluminum alloy casting system comprises a bottom shell 1 and a processing device 2; the processing device 2 comprises a feeding device 21, a gas storage device 22, an observation device 23, a sealing device 24, a pressing device 25, a pressing platform 26, a blocking device 27, a material return monitoring device 28 and a gas return device 29; a cooling device is arranged in the pressing platform 26, the pressing platform 26 is fixedly arranged at the upper part of the bottom shell 1, a pressing groove is formed in the upper part of the pressing platform 26, a feeding hole 261 and an overflow hole 262 are respectively formed in two sides of the pressing groove, and the pressing groove is used for receiving molten aluminum alloy raw materials; the pressing device 25 is arranged above the pressing platform 26, and the pressing device 25 is used for sealing the aluminum alloy in the pressing groove and shielding the feeding hole 261 and the overflow hole 262; the gas storage device 22 is arranged below the pressing platform 26, and the gas storage device 22 is used for storing inert gas; the feeding device 21 is arranged at one side of the gas storage device 22, and the feeding device 21 is used for storing molten aluminum alloy and injecting the molten aluminum alloy into the pressing groove; the observation device 23 is arranged at the upper part of the feeding device 21, and the observation device 23 is used for observing the liquid level height of the molten aluminum alloy in the feeding device 21; the sealing device 24 is arranged at one side of the pressing platform 26, which is provided with the feeding hole 261, and the sealing device 24 is used for sealing the feeding hole 261 after the feeding device 21 finishes feeding; the blocking device 27 is arranged at one side of the pressing platform 26, which is provided with the overflow port 262, and the blocking device 27 is used for assisting the pressing device 25 in sealing the pressing tank and discharging redundant gas; the return material monitoring device 28 is arranged below the blocking device 27, and the return material monitoring device 28 is used for monitoring the molten aluminum alloy overflowing from the overflow outlet 262; the air returning device 29 is provided between the gas storage device 22 and the supply device 21, and the air returning device 29 is used to assist the supply device 21 in drawing back the excess molten aluminum alloy that is supplied.

Since molten aluminum alloy is present in the feeding device 21, the feeding device 21 feeds out the molten aluminum alloy when casting is required, and for convenience, the raw materials described below are molten aluminum alloy. When feedway 21 offered the raw materials out, sealing device 24 did not seal feed inlet 261 this moment, so the raw materials alright enter into the inside in suppression groove through feed inlet 261, along with feedway 21's continuous feed, the raw materials can spill over overflow mouth 262 gradually, and plugging device 27 also did not plug up overflow mouth 262 this moment, just so can not leave on the casting and be used for carminative gas pocket, has reduced the process of later stage polishing. It is to be noted that the bottom end face of the overflow port 262 is coplanar with the bottom end face of the feed port 261. When the excessive raw material overflows from the overflow port 262, the excessive raw material is guided by the blocking device 27 and finally flows to the return material monitoring device 28, the return material monitoring device 28 can sense the temperature change of the position where the raw material is located, when the raw material passes through the return material monitoring device 28, the temperature of the return material monitoring device 28 rises sharply, at the moment, the return material monitoring device 28 can judge that the raw material in the pressing tank is filled, the controller is arranged in the bottom shell 1, the return material monitoring device 28 sends a signal to the controller, and the feeding device 21 stops feeding through the controller. Then, the pressing device 25 is started, the pressing device 25 comprises a pressing plate and a driving device, when the pressing device 25 is started, the driving device can drive the pressing plate to move along the height direction of the bottom shell 1, the pressing plate gradually moves towards the pressing platform 26, and when the pressing plate slides into the pressing groove, the feeding hole 261 and the overflow hole 262 can be completely sealed and blocked by the pressing plate; in order to ensure the sealing performance of the pressing device 25 on the pressing groove, the overflow port 262 is blocked by the blocking device 27, the overflow port 262 is already blocked by the pressing device 25 when the blocking device 27 is in operation, and the blocking device 27 has an air exhaust function, so that the normal operation of the blocking device 27 is not affected, and after the blocking device 27 completes the blocking, the raw materials in the pressing groove are cooled by the cooling device arranged in the pressing platform 26, so that the finished aluminum alloy part is prepared. Then the feeding device 21 is operated in reverse, that is, the raw material which is not used for casting is completely withdrawn from the outside, and in order to ensure that the feeding device 21 can smoothly withdraw the raw material, the gas storage device 22 supplies gas to the feeding device 21 through the gas return device 29 to make up for the inner space of the feeding device 21 after the raw material is withdrawn. The temperature of the raw materials for casting can not be reduced in the process of waiting for casting, the property of the raw materials to be added in the process of processing can not be changed, and meanwhile, non-rod-shaped parts without air outlet holes can be cast.

As shown in fig. 11-13: the supply device 21 includes a supply tank 211, a first extension pipe 212, a pump body 213, a supply assembly 214, and a second extension pipe 215; the feed tank 211 is disposed below the pressing platform 26; a first extension pipe 212 penetratingly disposed at an upper portion of the feed tank 211; the pump body 213 is fixedly disposed on an end of the first extension pipe 212 remote from the supply tank 211; the replenishment assembly 214 is provided on the side wall of the supply tank 211; both ends of the second extension pipe 215 are connected to the pump body 213 and the sealing device 24, respectively.

When the supply is required, the pump body 213 disposed above the supply tank 211 is actuated, and the pump body 213 draws the raw material in the supply tank 211 through the first extension pipe 212 and discharges the raw material into the sealing device 24 through the second extension pipe 215 disposed at the upper portion of the pump body 213, and the sealing device 24 does not seal the feed opening 261, so that the raw material can flow into the pressing tank through the feed opening 261.

As shown in fig. 2, 11 and 12: the gas storage device 22 comprises a gas storage tank 221, a gas supplementing pipe 222, a first switch valve 223 and a gas return assembly 224; the gas storage tank 221 is provided at one side of the feed tank 211; the air supply pipe 222 is connected to the gas storage tank 221 and the second extension pipe 215 at both ends; the first switching valve 223 is disposed on an end of the air supplement pipe 222 near the second extension pipe 215; the return air module 224 is connected at both ends to the gas storage tank 221 and the supply tank 211, respectively.

When the feeding device 21 needs to draw back the external material, the gas storage device 22 is started, a suction pump is disposed in the gas storage tank 221, the suction pump draws the gas in the gas storage tank 221 into the gas supplementing pipe 222, and simultaneously, due to the reverse operation of the pump body 213 in the feeding device 21, the material in the second extension pipe 215 is in a negative pressure state, then the first switch valve 223 is opened, the material in the second extension pipe 215 flows back to the feeding tank 211 through the first extension pipe 212 under the action of the negative pressure, the gas in the gas supplementing pipe 222 flows into the second extension pipe 215, when the material enters the inside of the feeding tank 211, the pressure in the feeding tank 211 is increased, and the gas in the feeding tank 211 can be timely discharged through the gas returning assembly 224, so as to reduce the pressure in the feeding tank 211.

As shown in fig. 3 and 12: the air returning device 29 includes a second switching valve 291 and a first air returning pipe 292; both ends of the first return air pipe 292 are respectively connected with the return flow monitoring device and the gas storage tank 221; a second switching valve 291 is provided on a side of the first return pipe 292 near the return flow monitoring device.

When the plugging device 27 is activated, the plugging device 27 discharges the space between the plugging device 27 and the pressing device 25 into the backflow monitoring device, and at this time, the backflow monitoring device is in a closed state near the second on-off valve 291, and the second on-off valve 291 is in an open state, so that the air discharged by the plugging device 27 flows back into the gas storage tank 221 through the first return air pipe 292.

As shown in fig. 4, 5, 8 and 9: the sealing device 24 comprises a first sleeve 241, a first linear actuator 242, a first pusher 243 and a first block piece 244; the first sleeve 241 is arranged at one side of the feed port 261 along the opening direction of the feed port 261, one end of the first sleeve 241 is fixedly connected with the feed port 261, and the first sleeve 241 is communicated with the feed port 261; the first linear driver 242 is arranged at one end of the first sleeve 241 far away from the feed port 261, and the output end of the first linear driver 242 is directed to the feed port 261; the first pushing member 243 is fixedly arranged on the output end of the first linear driver 242, and the first pushing member 243 is arranged in the first sleeve 241 in a sliding manner along the length direction of the first sleeve 241; the first blocking member 244 is slidably disposed in the first sleeve 241 at a side of the first pushing member 243 away from the first linear actuator 242 along a length direction of the first sleeve 241, and a first gap is formed between the first blocking member 244 and the first pushing member 243.

The first linear actuator 242 is preferably a linear cylinder, when the feeding device 21 is in a feeding state, the output end of the first linear actuator 242 is completely in a retracted state, when the feeding device 21 stops feeding, the first linear actuator 242 is activated, the first linear actuator 242 drives the first pushing member 243 arranged on the output end of the first linear actuator 242 to move towards the feeding port 261, the first blocking member 244 slides along the length direction of the first sleeve 241 under the action of the first pushing member 243, and because the second extension pipe 215 is communicated with the first sleeve 241, when the first blocking member 244 is driven by the first pushing member 243 and blocks the feeding port 261, the first blocking member 244 also blocks the second extension pipe 215. By providing the first blocking member 244 and the first pushing member 243 separately, because the heat conducting performance of air is poor, the temperature of the first blocking member 244 is high because the first blocking member 244 directly contacts with the raw material, and the first linear driver 242 may be damaged if the first blocking member 244 directly contacts with the first pushing member 243.

As shown in fig. 3, 6, 9 and 10: the blocking device 27 comprises a second linear actuator 271, a second pusher 272, a second blocking member 273, a vent groove 274 and a second sleeve 275; the second sleeve 275 is arranged on one side of the pressing platform 26, where the overflow port 262 is arranged, along the opening direction of the overflow port 262, and one end of the second sleeve 275 is connected with the overflow port 262; a second linear actuator 271 is disposed on the end of the second sleeve 275 remote from the overflow outlet 262; the second pushing member 272 is fixedly arranged on the output end of the second linear driver 271, and the second pushing member 272 is slidably arranged in the second sleeve 275 along the length direction of the second sleeve 275; a second blocking piece 273 is arranged on the side of the second pushing piece 272 far from the second linear driver 271, the second blocking piece 273 is slidably arranged in the second sleeve 275 along the length direction of the second sleeve 275, and a second gap exists between the second blocking piece 273 and the second pushing piece 272; an air discharge groove 274 is formed in the second blocking member 273, and the air discharge groove 274 is used to discharge excess air in the second sleeve 275.

When the pressing device 25 blocks the inlet 261 and the outlet 262, the second linear driver 271 is activated, the second linear driver 271 drives the second pushing member 272 disposed at the output end to move, so that the second blocking member 273 disposed at one side of the second pushing member 272 is driven to slide in the second sleeve 275, and since the pressing device 25 blocks the outlet 262, the air in the second sleeve 275 can only be discharged through the air discharge slot 274 of the second blocking member 273.

As shown in fig. 4 and 12: the feed back monitoring device 28 includes a temperature sensor 281, a U-shaped pipe 282, and a third on/off valve 283; the two ends of the U-shaped pipe 282 are respectively connected with the second sleeve 275 and the feed tank 211; the temperature sensor 281 is arranged at the bent part of the U-shaped pipe 282; two third on/off valves 283 are provided, and the third on/off valves 283 are provided in the U-shaped pipe 282 on both upper and lower sides of the second on/off valve 291.

After the air in the second sleeve 275 is discharged, the air enters the U-shaped pipe 282, the third switch valve 283 below the second switch valve 291 is in a closed state, the third switch valve 283 above the second switch valve 291 is in an open state, and the second switch valve 291 is also in an open state, so that the air discharged from the second sleeve 275 inevitably enters the gas storage tank 221 through the second switch valve 291 and the first return air pipe 292. At this time, since the raw material is stored in the U-shaped pipe 282, in order to prevent the raw material from being cooled too fast, the raw material needs to be discharged back into the feed tank 211 in time, the third on/off valve 283 above the second on/off valve 291 is closed, the third on/off valve 283 below the second on/off valve 291 is opened, and the gas storage tank 221 pumps gas into the U-shaped pipe 282 through the second on/off valve 291, so that the raw material is pushed into the feed tank 211 by the gas.

As shown in fig. 3 and 4: air return assembly 224 includes a second air return pipe 2241 and a one-way valve 2242; the check valve 2242 is fixedly arranged at the upper part of the feeding tank 211; both ends of the second gas return pipe 2241 are connected to the check valve 2242 and the gas storage tank 221, respectively.

When the pressure in the feed tank 211 becomes excessive, the gas in the feed tank 211 will push the check valve 2242 open so that the pressure in the feed tank 211 is not excessive.

As shown in fig. 2 and 3: the observation device 23 comprises a bending mirror 231, a camera 232 and a marker 233; one end of the bending mirror 231 is arranged at the upper part of the feeding box 211; the camera 232 is fixedly arranged at one end of the bending mirror 231 far away from the feeding box 211; the identifier 233 is fixedly provided on the sidewall of the first extension pipe 212 inside the supply tank 211.

When the amount of the material in the supply tank 211 is too small, the marker 233 provided on the first extension tube 212 is exposed, and the camera 232 observes the marker 233 through the bending mirror 231, and then the controller activates the supply assembly 214, so that the supply assembly 214 supplies the supply tank 211 with the material in time. The principle of refraction of the bending mirror 231 is the same as the periscope distancing.

As shown in fig. 1-13: the invention also relates to an aluminum alloy casting method, which comprises the following specific steps:

s1, discharging molten aluminum alloy into a pressing groove from a feed inlet 261 through a sealing device 24 by a feeding device 21;

s2, molten aluminum alloy in the pressing tank overflows from the overflow port 262 and is monitored by the temperature sensor 281, and the feeding device 21 stops feeding;

s3, the sealing device 24 is started to seal the feed port 261 and the feeding device 21, and meanwhile, the air returning device 29 assists the feeding device 21 to draw back the molten aluminum alloy;

s4, sealing the molten aluminum alloy in the pressing groove by the pressing device 25, simultaneously plugging the feeding hole 261 and the overflow hole 262, and starting the blocking device 27 to enhance the sealing performance of the pressing device 25 on the molten aluminum alloy in the pressing groove;

s5, the gas returning device 29 discharges the gas in the gas storage tank 221 into the U-shaped pipe 282, so that the molten aluminum alloy remaining in the U-shaped pipe 282 is pushed into the feeding device 21;

and S6, cooling the molten aluminum alloy in the pressing groove by using a cooling device, lifting the pressing device 25 after cooling is completed, and taking out the aluminum alloy finished product.

The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An aluminum alloy casting system comprises a bottom shell (1) and a processing device (2);

the device is characterized in that the processing device (2) comprises a feeding device (21), a gas storage device (22), an observation device (23), a sealing device (24), a pressing device (25), a pressing platform (26), a blocking device (27), a material return monitoring device (28) and a gas return device (29);

a cooling device is arranged in the pressing platform (26), the pressing platform (26) is fixedly arranged at the upper part of the bottom shell (1), a pressing groove is formed in the upper part of the pressing platform (26), a feeding hole (261) and an overflow hole (262) are formed in each of two sides of the pressing groove, and the pressing grooves are used for receiving molten aluminum alloy raw materials;

the pressing device (25) is arranged above the pressing platform (26), and the pressing device (25) is used for sealing the aluminum alloy in the pressing groove;

the gas storage device (22) is arranged below the pressing platform (26), and the gas storage device (22) is used for storing inert gas;

the feeding device (21) is arranged on one side of the gas storage device (22), and the feeding device (21) is used for feeding materials into the pressing groove;

the observation device (23) is arranged at the upper part of the feeding device (21), and the observation device (23) is used for observing the liquid level height of the molten aluminum alloy in the feeding device (21);

the sealing device (24) is arranged on one side, provided with the feed port (261), of the pressing platform (26), and the sealing device (24) is used for sealing the feed port (261);

the blocking device (27) is arranged on one side, provided with the overflow outlet (262), of the pressing platform (26), and the blocking device (27) is used for assisting the pressing device (25) in sealing the pressing groove;

the feed back monitoring device (28) is arranged below the plugging device (27);

the air return device (29) is arranged between the gas storage device (22) and the supply device (21).

2. An aluminium alloy casting system according to claim 1, wherein the feeding device (21) comprises a feed tank (211), a first extension pipe (212), a pump body (213), a replenishment assembly (214) and a second extension pipe (215);

the feeding box (211) is arranged below the pressing platform (26);

the first extension pipe (212) is arranged at the upper part of the feed tank (211) in a penetrating way;

the pump body (213) is fixedly arranged at one end of the first extension pipe (212) far away from the feeding tank (211);

the supply assembly (214) is arranged on the side wall of the supply tank (211);

both ends of the second extension pipe (215) are connected to the pump body (213) and the sealing device (24), respectively.

3. An aluminum alloy casting system according to claim 2, wherein the gas storage device (22) comprises a gas storage tank (221), an air supply pipe (222), a first on-off valve (223) and an air return assembly (224);

the gas storage tank (221) is arranged on one side of the feeding tank (211);

two ends of the air supply pipe (222) are respectively connected with the air storage tank (221) and the second extension pipe (215);

the first switch valve (223) is arranged at one end of the air supply pipe (222) close to the second extension pipe (215);

two ends of the air return component (224) are respectively connected with the gas storage tank (221) and the supply tank (211).

4. An aluminum alloy casting system according to claim 3, wherein the gas return device (29) comprises a second on-off valve (291) and a first gas return pipe (292);

two ends of the first return pipe (292) are respectively connected with the return flow monitoring device and the gas storage tank (221);

a second on-off valve (291) is provided on a side of the first return pipe (292) near the return flow monitoring device.

5. An aluminium alloy casting system according to claim 4, wherein the sealing device (24) comprises a first sleeve (241), a first linear drive (242), a first pusher (243) and a first closure (244);

the first sleeve (241) is arranged on one side of the feeding hole (261) along the opening direction of the feeding hole (261), one end of the first sleeve (241) is fixedly connected with the feeding hole (261), and the first sleeve (241) is communicated with the feeding hole (261);

the first linear driver (242) is arranged at one end, away from the feed opening (261), of the first sleeve (241), and the output end of the first linear driver (242) points to the feed opening (261);

the first pushing piece (243) is fixedly arranged on the output end of the first linear driver (242), and the first pushing piece (243) is arranged in the first sleeve (241) in a sliding manner along the length direction of the first sleeve (241);

the first blocking piece (244) is arranged in the first sleeve (241) at one side of the first pushing piece (243) far away from the first linear driver (242) in a sliding mode along the length direction of the first sleeve (241), and a first gap is reserved between the first blocking piece (244) and the first pushing piece (243).

6. An aluminium alloy casting system according to claim 5, wherein the blocking device (27) comprises a second linear actuator (271), a second pusher (272), a second blocking member (273), a vent slot (274) and a second sleeve (275);

the second sleeve pipe (275) is arranged on one side of the pressing platform (26) provided with the overflow port (262) along the opening direction of the overflow port (262), and one end of the second sleeve pipe (275) is connected with the overflow port (262);

a second linear actuator (271) is disposed on an end of the second sleeve (275) remote from the overflow outlet (262);

the second pushing piece (272) is fixedly arranged on the output end of the second linear driver (271), and the second pushing piece (272) is arranged in the second sleeve (275) in a sliding manner along the length direction of the second sleeve (275);

the second blocking piece (273) is arranged on one side, far away from the second linear driver (271), of the second pushing piece (272), the second blocking piece (273) is slidably arranged in the second sleeve (275) along the length direction of the second sleeve (275), and a second gap is reserved between the second blocking piece (273) and the second pushing piece (272);

a vent groove (274) is formed in the second blocking member (273), and the vent groove (274) is used for venting excess air in the second sleeve (275).

7. An aluminum alloy casting system according to claim 6, wherein the return material monitoring device (28) comprises a temperature sensor (281), a U-shaped pipe (282) and a third on/off valve (283);

two ends of the U-shaped pipe (282) are respectively connected with the second sleeve pipe (275) and the feeding box (211);

the temperature sensor (281) is arranged at the bent part of the U-shaped pipe (282);

two third on-off valves (283) are provided, and the third on-off valves (283) are respectively arranged on U-shaped pipes (282) at the upper side and the lower side of the second on-off valve (291).

8. An aluminium alloy casting system according to claim 7, wherein the gas return assembly (224) comprises a second gas return pipe (2241) and a one-way valve (2242);

the one-way valve (2242) is fixedly arranged at the upper part of the feeding box (211);

two ends of the second air return pipe (2241) are respectively connected with the one-way valve (2242) and the gas storage tank (221).

9. An aluminium alloy casting system according to claim 2, wherein the observation device (23) comprises a bending mirror (231), a camera (232) and a marker (233);

one end of the bending mirror (231) is arranged at the upper part of the feeding box (211);

the camera (232) is fixedly arranged at one end of the bending mirror (231) far away from the feeding box (211);

the identifier (233) is fixedly arranged on the side wall of the first extension pipe (212) in the supply box (211).

10. The invention also relates to an aluminum alloy casting method, which is applied to the aluminum alloy casting system as recited in any one of claims 1 to 9, and is characterized by comprising the following specific steps:

s1, discharging molten aluminum alloy into a pressing groove from a feed inlet (261) through a sealing device (24) by a feeding device (21);

s2, the molten aluminum alloy in the pressing tank overflows from an overflow port (262) and is monitored by a temperature sensor (281), and the feeding device (21) stops feeding;

s3, starting a sealing device (24) to seal the feed inlet (261) and the feeding device (21), and simultaneously, assisting the feeding device (21) to draw back the molten aluminum alloy through an air returning device (29);

s4, sealing the molten aluminum alloy in the pressing groove by the pressing device (25), simultaneously plugging the feed inlet (261) and the overflow outlet (262), and starting the blocking device (27) to enhance the sealing performance of the pressing device (25) on the molten aluminum alloy in the pressing groove;

s5, the gas returning device (29) discharges the gas in the gas storage tank (221) into the U-shaped pipe (282), so that the molten aluminum alloy remained in the U-shaped pipe (282) is pushed into the feeding device (21);

s6, cooling the molten aluminum alloy in the pressing groove by the cooling device, lifting the pressing device (25) after cooling is finished, and taking out the aluminum alloy finished product.