CN117960994B - Sand mould casting equipment - Google Patents

Sand mould casting equipment Download PDF

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Publication number
CN117960994B
CN117960994B CN202410392253.1A CN202410392253A CN117960994B CN 117960994 B CN117960994 B CN 117960994B CN 202410392253 A CN202410392253 A CN 202410392253A CN 117960994 B CN117960994 B CN 117960994B
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China
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humidity
sand
storage barrel
molding sand
molding
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CN117960994A (en
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黄奡
李章法
周水明
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Fujian Taiyi Precision Machinery Co ltd
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Fujian Taiyi Precision Machinery Co ltd
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Abstract

The invention discloses sand mould casting forming equipment, and relates to the technical field of sand mould casting. The sand mold casting molding equipment comprises a humidity control device, a temperature control device and a control device, wherein the humidity control device is used for adjusting the humidity of molding sand and enabling the humidity of the molding sand to be in a humidity range required by molding; the air storage barrel is connected with the material distributing piece, is in a round table shape, and is wound with a plurality of annular pipes on the side face; the prediction wetting device and the re-wetting device respectively measure the humidity of the molding sand before and after the humidity is adjusted; a control device configured to adjust the release amount of the water vapor and the opening and closing time of the gas passage according to the humidity of the molding sand measured by the first moisture meter; and the rotating device is used for crushing, filtering and stirring the sand. This sand mould casting former is through measuring and quick regulation to the required molding sand humidity at every turn for molding sand humidity accords with the molding requirement, and the molding sand after the humidifying uses immediately, avoids the molding sand humidity to take place great change in transfer and storage process.

Description

Sand mould casting equipment
Technical Field
The invention relates to the technical field of sand mould casting, in particular to sand mould casting forming equipment.
Background
The sand mould casting is a process of covering sand with a certain compaction rate on the surface of a female mould, pounding the sand into a sand mould, taking out the female mould, pouring a metal solution into the sand mould and then casting the mould, wherein the compaction rate of the sand needs to be adjusted before the sand mould is used.
The compaction ratio is the percentage of the volume change of the green molding sand mixture under the action of a certain compaction force, and the absolute amount of water contained in the molding sand is a variable of the compaction ratio, and in the same state, the higher the water content, the higher the compaction ratio. The drier molding sand is loose and has higher density, the volume of the molding sand is reduced less under the action of the same hammering compaction force, the molding sand is brittle, has poor toughness, is easy to damage after being drawn, is easy to break at the corner of the sand mold, and is easy to produce the defects of sand washing, sand holes and the like of castings; the wet molding sand has poor fluidity, low loose density before being not compacted, loose sand grains are stacked, the volume is reduced more after compaction, a large amount of gas is rapidly generated during pouring by using the molding sand, and the defects of air holes, sand expansion, sand inclusion scab, rough surface and the like of castings are likely to occur. The compaction rate of the molding sand plays an extremely important role in casting production, and the casting waste caused by the fact that the compaction rate of the molding sand does not meet the standard accounts for about 5% -20% of the total casting waste.
In the known prior art, the using amount of the molding sand is large, the humidity of the molding sand needs to be measured and the water adding amount needs to be controlled to adjust the humidity of the molding sand, the processed molding sand needs to be transported and stored, the molding sand can be evaporated or absorbed under the influence of the processing environment or the storage environment, and when small devices are manufactured, the humidity of a small amount of molding sand used once can not be consistent with the humidity required by molding, so that the quality of products is uneven.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides sand mold casting molding equipment, which measures and rapidly adjusts the humidity of molding sand required each time so that the humidity of the molding sand meets molding requirements, the molding sand after humidity adjustment is immediately used, and the larger change of the humidity of the molding sand in the transferring and storing processes is avoided.
The technical scheme is as follows: in order to achieve the above purpose, the invention is realized by the following technical scheme: a sand mold casting molding apparatus comprising: a humidity control apparatus for adjusting the humidity of molding sand and making the humidity of molding sand conform to the humidity range required for molding, the humidity control apparatus comprising: and the material distributing piece is used for guiding falling molding sand.
The feed divider includes: the casing, the inner wall of casing is connected with a plurality of flange, and a plurality of the flange is according to the circumferencial direction equidistance distribution of casing, every the flange lower part is close to one side of casing axis and all is connected with a inlet pipe, and is adjacent be provided with an arc board between the inlet pipe, the both ends of arc board are connected with one side that adjacent inlet pipe is close to respectively, the top of arc board is connected with the water conservancy diversion awl, and is adjacent be provided with a guide riser between the flange, one side that the water conservancy diversion awl axis was kept away from to the guide riser is connected with shells inner wall, one side and the water conservancy diversion awl side of guide riser are connected, the bottom and the inlet pipe top of guide riser are connected, the top of guide riser is connected with the roof.
The air storage barrel, the bottom fixed connection of top and branch material spare of air storage barrel, the air storage barrel is round platform shape, the side round joint of air storage barrel has a plurality of ring canal, the inner wall of air storage barrel runs through and has seted up a plurality of fresh air inlet and be linked together with the ring canal, the air intake has been run through in the middle part of air storage barrel side, the air intake is arranged in leading-in air storage barrel of wind or steam, the top of ring canal is linked together with the bottom of inlet pipe.
Preferably, the guide vertical plate consists of two plate bodies symmetrically distributed according to the axis of the guide cone, the bottoms of the two plate bodies are respectively connected with the tops of the adjacent feeding pipes, the included angle between the tops of the plate bodies and the vertical plane is 20 degrees to 40 degrees, and a feeding channel is arranged between the adjacent guide vertical plates and enables molding sand to flow into the feeding pipes through the feeding channel.
Preferably, the diameter of the air inlet hole is smaller than that of sand grains, water vapor and hot air in the air storage barrel are blown into the annular pipe through the air inlet hole, the top of each annular pipe and the top of the air storage barrel are located on the same plane, and the bottom of each annular pipe and the bottom of the air storage barrel are located on the same plane.
Preferably, the method further comprises: the top of first bottom plate is connected with first backup pad, second backup pad, third backup pad, the upper portion of third backup pad is connected with predicts wet device, the middle part and the casing of third backup pad are connected, predict wet device includes: the barrel, the side of barrel is connected with one side that the third backup pad is close to the casing, the bottom of barrel is 35 ~ 45 with vertical planar contained angle, the side of barrel is connected with first moisture apparatus and places the board, first moisture apparatus electric connection has the guide arm, the guide arm passes the inside of placing the portion and with place the inside sliding connection of board, the guide arm is placed on placing the board, the diameter of guide arm is less than the diameter of through-hole, the top of barrel is connected with the top cap, a plurality of through-hole has been seted up according to the circumferencial direction equidistance penetration of top cap in the edge of top cap, there is first discharging pipe the bottom of barrel through the second bottom plate intercommunication, the center department of second bottom plate is connected with the connecting block.
Preferably, the method further comprises: a rotating device configured to crush, filter and agitate sand, the rotating device comprising: screening box, the side of screening box is close to one side fixed connection of casing with the third backup pad, the bottom of screening box is connected with the filter plate, be provided with the motor directly over the filter plate, the stiff end of motor is kept away from one side of barrel with the connecting block and is connected, the rotation portion of motor is connected with breaker plate, bull stick through the pivot, breaker plate is set up to smash husky group under rotatory effect, the bottom connection intercommunication of filter plate has a ejection of compact section of thick bamboo, the bottom of ejection of compact section of thick bamboo is linked together with the top of casing.
Preferably, the method further comprises: a control device configured to adjust a release amount of water vapor and opening and closing of the gas passage in accordance with the humidity of the molding sand measured by the first moisture meter, the control device comprising: the mixing pipe, the mixing pipe is linked together with the fresh air inlet, there is the air heater lateral surface through tuber pipe intercommunication, there is the controller air heater through first wire electric connection, the controller has the valve through second wire electric connection, the both ends of valve communicate respectively has atomizer, feed liquor pipe, atomizer sets up in the mixing pipe, controller electric connection has the database, and the database is used for collecting the required water yield of different humidity molding sand regulation to molding humidity under the same environment or heating time.
Preferably, the method further comprises: a re-wetting apparatus for measuring the humidity of the conditioned sand, the re-wetting apparatus comprising: the storage cylinder, the bottom of storage cylinder is connected with the top of first bottom plate, the side intercommunication of storage cylinder bottom has the second discharging pipe, the side of storage cylinder runs through and has seted up the wet hole of survey, wet hole sliding connection has the second moisture apparatus.
Preferably, one end of the rotating shaft sequentially penetrates through the filter plate, the guide cone and the air storage barrel and stretches into the air storage barrel, the rotating rod is arranged in the air storage barrel, the center of the inner bottom of the air storage barrel is communicated with the air storage barrel, and the humidity of molding sand in the air storage barrel is regulated by controlling the opening and closing of the air storage barrel and the channel of the air storage barrel.
The beneficial effects are that: the invention provides sand mould casting forming equipment. Compared with the prior art, possess following beneficial effect 1, measure the humidity of moulding sand before and after adjusting and adjust the humidity of moulding sand through steam and hot air delivery's mode for moulding sand humidity accords with the required humidity requirement of molding, and improves the efficiency of humidifying through the barrel-shaped wind storage barrel and the ring canal that the spiral encircleed, increases the effect of humidifying.
2. The circular tube is in winding connection with the side surface of the air storage tube, the side area of the air storage tube determines the length of the circular tube on the basis of unchanged sectional area of the circular tube, and the path length and time of molding sand humidity control in the circular tube are determined, so that the use space is saved, the air storage tube is designed into a circular truncated cone shape with the upper part narrow and the lower part wide under the condition that the height of the air storage tube is unchanged, the side area of the air storage tube can be effectively increased, the volume of the cavity inside the air storage tube can be increased, and the water vapor containing amount is increased.
3. The wind power and the humidity in the air storage cylinder, which are close to the air inlet, are larger than those of other parts, and the annular pipe is designed into a spiral shape, so that all angles of the annular pipe and the air storage cylinder are contacted, and the difference of the humidity and the temperature in the annular pipe is reduced; and the path length of the spiral ring canal is longer than that of a straight pipe, the humidifying or drying time of molding sand in the ring canal is prolonged, the humidifying efficiency is improved, the ring canal which is extended downwards spirally is enabled to slide downwards along the direction of the ring canal by utilizing the gravity of the molding sand, extra power is not needed, energy is saved, and the sand particles which are partially blocked in the air inlet hole can be blown open by hot air, so that the smoothness of the air inlet hole is ensured.
Drawings
The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a separated view of the third support plate, the portion where the cartridge is located, and the portion where the bottom plate is located.
Fig. 3 is a schematic view of the structure of fig. 2 with portions of the third support plate and the bottom plate removed.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic diagram of the structure of the prediction wetting apparatus.
Fig. 6 is an exploded view of the predictive wet apparatus.
Fig. 7 is a schematic structural view of the rotating device and the humidity control device.
Fig. 8 is a separated view of the rotating device and the humidity control device.
Fig. 9 is an exploded view of the rotating device with the rotating rod removed.
Fig. 10 is a schematic structural view of the humidity control apparatus.
FIG. 11 is a diagram showing separation of the distributor and the air reservoir.
Fig. 12 is a separation view of the housing and the internal structure of the housing in fig. 11.
Fig. 13 is an exploded view of fig. 12 with the housing removed.
FIG. 14 is a diagram showing the separation of the air reservoir from the grommet.
Fig. 15 is a schematic view of the construction of the grommet.
Fig. 16 is a schematic structural view of the control device.
FIG. 17 is a schematic diagram of a re-wetting apparatus.
The reference numerals in the figures are: the moisture measuring device comprises a first bottom plate, a first 12 supporting plate, a second 13 supporting plate, a third 14 supporting plate, a2 prediction moisture device, a cylinder 21, a top cover 22, a 23 through hole, a second bottom plate, a first 25 discharging pipe, a 26 connecting block, a first 27 moisture measuring device, a 28 guide rod, a 29 placing plate, a 3 rotating device, a 31 screening box, a 32 motor, a 33 rotating shaft, a 34 crushing plate, a 35 filter plate, a 36 discharging pipe, a 37 rotating rod, a 4 moisture controlling device, a 41 distributing piece, a 411 shell, a 412 convex plate, a 413 guiding vertical plate, a 414 top plate, a 415 feeding pipe, a 416 arc plate, a 417 guiding cone, a 42 air storage pipe, a 43 air inlet, a 44 annular pipe, a 45 air inlet hole, a 5 control device, a 51 mixing pipe, a 52 air pipe, a 53 hot air blower, a 54 first lead, a 55 controller, a 56 second lead, a 57 atomizing nozzle, a 58 valve, a 59 liquid inlet pipe, a 6 re-moisture measuring device, a 61 storage pipe, a 62 second discharging pipe, a 63 moisture measuring hole and a 64 second moisture measuring device.
While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the application solves the problems that the processed molding sand needs to be transported and stored, the molding sand is evaporated or absorbed under the influence of a processing environment or a storage environment, and the humidity of the molding sand is possibly inconsistent with the humidity required by the molding, so that the quality of a product is uneven.
In the known prior art, in order to guarantee production efficiency and resources are saved, a large amount of old sand and novel sand after screening can be fully mixed and processed into molding sand with certain humidity, during transportation and storage, the humidity of the molding sand is greatly influenced by the environment, the moisture in the molding sand is easy to evaporate or the molding sand absorbs water to be moist, the moisture in the piled molding sand permeates downwards under the action of gravity, the humidity of the bottom of a sand pile is greater than the humidity of the top of the sand pile, and when a small device is manufactured by a sand mould, the required molding sand amount is small, the positions of the sand in the sand pile are different, and the humidity of the molding sand is difficult to guarantee.
In the known prior art, in the process of manufacturing the molding sand, the average humidity of the whole sand stack can be estimated through multi-point measurement, the humidity of the molding sand required by each small device is difficult to accurately measure, the difference between the humidity of the molding sand at different parts in the sand stack and the average humidity of the whole sand stack can be large, the humidity of part of the sand in the sand stack exceeds the humidity range of the molding sand required by molding, the rejection rate of castings is greatly improved, and a large amount of loss is caused.
In the known prior art, when the humidity of the molding sand does not meet the molding standard, the humidity of the molding sand is adjusted in a water supplementing or heating mode, so that the uniform stirring is required for ensuring the uniform humidity of the molding sand, the time and the labor are wasted, and a specific container does not need to rapidly measure and adjust the humidity of the molding sand.
The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows: the humidity of the molding sand is measured through the prediction humidity device, and the measured data are input into the database, the database searches the data and inputs the corresponding humidity adjustment information into the controller, the humidity of the molding sand is overhigh, the air heater is started and the working time of the air heater is controlled, hot air sequentially enters the air storage barrel, the air inlet and the annular pipe, the annular pipe is a spiral pipe, the length of the annular pipe is prolonged, the sectional area of the annular pipe is small, the contact area of the molding sand and the hot air is increased, the drying efficiency of the molding sand is improved, the humidity control time is shortened, when the humidity of the molding sand is overlow, the air heater and the electromagnetic valve are started simultaneously, the water passing time of the air heater and the electromagnetic valve is controlled, the hot air blows the water mist sprayed out of the atomizing nozzle into the annular pipe, the humidity of the molding sand which is moved downwards in the annular pipe is increased, the molding sand after the humidity adjustment enters the storage barrel, the humidity in the storage barrel is measured through the second moisture meter, and the information is transmitted into the database, and the humidity of the molding sand can be finely adjusted through the controller and meet the humidity requirements of the molding sand, and the molding sand can be adjusted in a needed by the molding humidity through the controller.
In order to better understand the above technical solutions, the following description will refer to the drawings and specific embodiments.
Referring to fig. 1 to 14, a sand mold casting molding apparatus includes: a humidity control device 4 for adjusting the humidity of the molding sand and making the humidity of the molding sand conform to the humidity range required for molding, the humidity control device 4 comprising: and a distributing member 41, the distributing member 41 being adapted to guide the falling molding sand.
The distributing member 41 includes: the casing 411, the inner wall of casing 411 is connected with a plurality of flange 412, a plurality of flange 412 is according to the circumferencial direction equidistance distribution of casing 411, one side that every flange 412 lower part is close to the casing 411 axis all is connected with a inlet pipe 415, be provided with an arc board 416 between the adjacent inlet pipe 415, the both ends of arc board 416 are connected with one side that adjacent inlet pipe 415 is close to respectively, the top of arc board 416 is connected with the water conservancy diversion awl 417, be provided with a guide riser 413 between the adjacent flange 412, one side that the water conservancy diversion awl 417 axis was kept away from to the guide riser 413 is connected with casing 411 inner wall, one side and the water conservancy diversion awl 417 side of guide riser 413 are connected, the bottom and the inlet pipe 415 top of guide riser 413 are connected, the top of guide riser 413 is connected with roof 414.
The boss 412 mates with the side of the feed tube 415 away from the axis of the housing 411, and there is no gap on the side of the housing 411 adjacent to the feed tube 415, facilitating the fall of sand from the bowl 21 into the feed tube 415.
An arc plate 416 is arranged between adjacent feeding pipes 415, and a plurality of arc plates 416 and a plurality of feeding pipes 415 are arranged in a circular shape.
The tip of the flow cone 417 is directed upward so that sand falling on the side of the flow cone 417 slides down into the feed tube 415.
The guide risers 413 are composed of two plates symmetrically distributed according to the axis of the guide cone 417, the bottoms of the two plates are respectively connected with the tops of the adjacent feeding pipes 415, the included angle between the tops of the plates and the vertical plane is 20 degrees to 40 degrees, and feeding channels are arranged between the adjacent guide risers 413 and enable molding sand to flow into the feeding pipes 415 through the feeding channels.
The top plate 414 is matched with the top of the guide vertical plate 413, and the top plate 414 is obliquely arranged downwards towards the longitudinal axis of the cylinder 21 to form an inclined plane towards the center of the cylinder 21, so that molding sand on the top plate 414 can conveniently fall into the guide cone 417 and the feed pipe 415 in sequence, and the amount of the molding sand remained on the top plate 414 is reduced.
The angle between the top of the plate body and the vertical plane is 20-40 degrees, i.e. the angle between the top plate 414 and the vertical plane is 20-40 degrees.
When the angle between the top plate 414 and the vertical plane is 20 °, the inclination degree of the top plate 414 is large, the downward force of the molding sand along the inclined surface is larger, and the molding sand is difficult to stay on the top plate 414.
When the included angle between the top plate 414 and the vertical plane is 40 degrees, the resultant force of the molding sand on the top plate 414 along the inclined plane is smaller, the falling speed of the molding sand is slow, and the moving time of the molding sand on the top plate 414 is prolonged, so that the amount of the molding sand passing through the feeding pipe 415 in unit time is reduced, the molding sand is more dispersed, and the humidifying effect is better.
The air storage barrel 42, the top of air storage barrel 42 and the bottom fixed connection of branch material 41, air storage barrel 42 is round platform shape, the side round joint of air storage barrel 42 has a plurality of ring canal 44, the inner wall of air storage barrel 42 runs through and has seted up a plurality of air inlet 45 and be linked together with ring canal 44, the middle part of air storage barrel 42 side runs through and has seted up air intake 43, air intake 43 is arranged in leading into air storage barrel 42 with wind or steam, the top of ring canal 44 is linked together with the bottom of inlet pipe 415.
The annular pipe 44 is in winding connection with the side surface of the air storage barrel 42, the side area of the air storage barrel 42 determines the length of the annular pipe 44 on the basis of the unchanged sectional area of the annular pipe 44, and the path length and the time of the conditioning of the molding sand in the annular pipe 44 are determined.
The wind power and the humidity in the air storage cylinder 42, which are close to the air inlet 43, are larger than those of other parts, and the annular pipe 44 is designed into a spiral shape, so that all angles of the annular pipe 44 and the air storage cylinder 42 are contacted, and the difference of the humidity and the temperature in the annular pipe 44 is reduced; and the path length of the spiral ring canal 44 is longer than that of a straight pipe, so that the humidifying or drying time of molding sand in the ring canal 44 is prolonged, and the humidifying efficiency is improved.
The loop pipe 44 which extends downwards is screwed, and the molding sand slides downwards along the direction of the loop pipe 44 by utilizing the gravity of the molding sand, so that additional power is not needed, energy is saved, and the sand particles which are partially blocked in the air inlet hole 45 can be blown away by hot air, so that the smoothness of the air inlet hole 45 is ensured.
The sectional area of the annular pipe 44 is small, the volume of the annular pipe 44 in unit length is small, the annular pipe 44 is spirally surrounded, molding sand in the annular pipe 44 spirally slides downwards under the action of gravity and centrifugal force, so that the molding sand in the annular pipe 44 is thrown away, the blocking of the air inlet hole 45 is reduced, the air inlet amount or water vapor in the annular pipe 44 is increased, the accumulation of the molding sand is reduced, the contact area between the molding sand and air or water vapor is increased, and the humidifying effect is improved.
The diameter of the air inlet hole 45 is smaller than that of sand grains, water vapor and hot air in the air storage barrel 42 are blown into the annular pipes 44 through the air inlet hole 45, the top of each annular pipe 44 and the top of the air storage barrel 42 are located on the same plane, and the bottom of each annular pipe 44 and the bottom of the air storage barrel 42 are located on the same plane.
The diameter of the air inlet hole 45 is smaller than that of sand grains, molding sand in the circular pipe 44 cannot fall into the air storage barrel 42 from the air inlet hole 45, and air or water vapor in the air storage barrel 42 can enter the circular pipe 44.
As shown in fig. 1 to 6, the method further comprises: the first bottom plate 11, the top of first bottom plate 11 is connected with first backup pad 12, second backup pad 13, third backup pad 14, and the upper portion of third backup pad 14 is connected with predicts wet apparatus 2, and the middle part of third backup pad 14 is connected with casing 411, predicts wet apparatus 2 and includes: the barrel 21, the side of barrel 21 is connected with one side that the third backup pad 14 is close to casing 411, the bottom of barrel 21 is 35 ~ 45 with vertical plane's contained angle, the side of barrel 21 is connected with first moisture apparatus 27 and places board 29, first moisture apparatus 27 electric connection has guide arm 28, guide arm 28 passes the inside of placing the portion and with place board 29 inside sliding connection, guide arm 28 places on placing board 29, the diameter of guide arm 28 is less than the diameter of through-hole 23, the top of barrel 21 is connected with top cap 22, a plurality of through-hole 23 has been offered according to the circumferencial direction equidistance penetration of barrel 21 in top cap 22, the bottom of barrel 21 is connected with first discharging pipe 25 through second bottom plate 24, the center department of second bottom plate 24 is connected with connecting block 26.
The included angle between the bottom of the cylinder 21 and the vertical plane is 35-45 degrees, so that molding sand can conveniently slide down the inclined plane to the bottom outlet of the cylinder 21, and the molding sand can be conveniently collected.
When the bottom of the cylinder 21 forms an angle of 35 ° with the vertical plane, the inclination angle of the bottom of the cylinder 21 is large, and the sliding speed of the molding sand at the bottom of the cylinder 21 is high.
When the included angle between the bottom of the cylinder 21 and the vertical plane is 45 degrees, the inclination angle of the bottom of the cylinder 21 is small, the bottom of the cylinder 21 is more stable, and the resistance of the bottom of the cylinder 21 to impact force when molding sand falls is improved.
The edge of the top cover 22 is provided with a plurality of through holes 23, so that the guide rod 28 can be randomly inserted into the plurality of through holes 23 to measure, the randomness is increased, and the accuracy of the measurement result is improved.
As shown in fig. 1 to 9, the method further comprises: a rotating device 3 configured to crush, filter and agitate the sand, the rotating device 3 comprising: screening box 31, screening box 31's side and the one side fixed connection that third backup pad 14 is close to casing 411, screening box 31's bottom is connected with filter plate 35, be provided with motor 32 directly over filter plate 35, motor 32's stiff end is connected with the one side that barrel 21 was kept away from to connecting block 26, motor 32's rotation portion is connected with crushing plate 34, bull stick 37 through pivot 33, crushing plate 34 is set up to smash the sand mass under rotatory effect, the bottom connection intercommunication of filter plate 35 has ejection of compact section of thick bamboo 36, the bottom of ejection of compact section of thick bamboo 36 is linked together with the top of casing 411.
Part of the molding sand is in a lump, the sand lump is required to be crushed and qualified molding sand is required to be screened, and the molding sand subjected to humidity adjustment is required to be fully stirred, so that the molding sand is uniformly mixed.
As shown in fig. 1,2,3, 4 and 16, further includes: a control device 5 configured to adjust the release amount of water vapor and the opening and closing of the gas passage in accordance with the humidity of the molding sand measured by the first moisture meter 27, the control device 5 comprising: the mixing tube 51, the mixing tube 51 is linked together with the fresh air inlet 45, the side of mixing tube 51 is through tuber pipe 52 intercommunication there being air heater 53, air heater 53 is through first wire 54 electric connection there being controller 55, controller 55 is through second wire 56 electric connection there being valve 58, the both ends of valve 58 communicate respectively and have atomizer 57, feed liquor pipe 59, atomizer 57 sets up in mixing tube 51, controller 55 electric connection has the database, the database is used for collecting the required water yield of molding humidity regulation of different humidity molding sand under the same environment or heating time.
The atomizer 57 is used for converting water into water vapor, so that the water vapor is conveniently combined with molding sand particles, the water vapor enters the mixing pipe 51, hot air also enters the mixing pipe 51 through the air pipe 52, the speed of the water vapor sequentially entering the air storage barrel 42 and the annular pipe 44 can be increased by the hot air, and part of the water is evaporated into gas during the process, so that water drops adhered to the inner wall of the air storage barrel 42 are reduced.
The database is used for storing heating time data and water quantity data required by molding sand adjustment under different humidity, and forming a corresponding scheme, and can also be used for manually inputting and modifying the data in the database, if the measured humidity of the molding sand does not meet the humidity range required by molding, inputting the molding sand humidity data into the database, obtaining an adjustment scheme, and transmitting scheme information into the controller 55, so as to control the opening and opening time of the air heater and the electromagnetic valve until the molding sand humidity is adjusted to be within the humidity range required by molding.
As shown in fig. 1 to 17, the method further comprises: the re-wetting apparatus 6 for measuring the humidity of the conditioned sand, the re-wetting apparatus 6 comprising: the storage cylinder 61, the bottom of storage cylinder 61 is connected with the top of first bottom plate 11, the side intercommunication of storage cylinder 61 bottom has second discharging pipe 62, the side of storage cylinder 61 is run through and is offered wet hole 63, wet hole 63 sliding connection has second moisture apparatus 64, the one end of pivot 33 passes filter plate 35 in proper order, the water conservancy diversion awl 417, the storage cylinder 42 and stretches into storage cylinder 61, the bull stick 37 sets up in storage cylinder 61, the center department in the storage cylinder 42 is linked together with the storage cylinder, the humidity of molding sand in the storage cylinder 61 is adjusted through the passageway that control storage cylinder 42 and storage cylinder 61 opens and shuts.
When the molding sand machine is used, molding sand to be used is placed into the cylinder 21, the guide rod 28 connected with the first moisture tester 27 is inserted into the molding sand in the cylinder 21 through the random through hole 23, the average humidity of the molding sand is obtained after a plurality of random measurements, if the humidity requirement of the molding is met, the molding sand machine is directly used, if the humidity requirement of the molding is not met, the molding sand humidity data are input into the database, a proper adjustment scheme is obtained, the database transmits the information of the adjustment scheme to the controller 55, and the controller 55 controls the opening and the opening time of the hot air blower and the electromagnetic valve until the humidity of the molding sand is adjusted to be within the humidity range required by the molding.
The molding sand which does not meet the humidity requirement, especially the molding sand with too high humidity, tends to be easy to agglomerate, so that the molding sand falls into the screening box 31 from the cylinder 21, the motor 32 sequentially rotates through the rotating shaft 33 and carries the crushing plate 34 and the rotating rod 37, the crushing plate 34 impacts the molding sand on the filter plate 35, the partially agglomerated molding sand is crushed, and a large amount of molding sand particles sequentially fall into the discharging cylinder 36 and the shell 411 through the filter holes on the filter plate 35.
The molding sand in the shell 411 falls on the top plate 414 and the flow guide cone 417, the molding sand on the flow guide cone 417 slides down to the feed pipe 415 along the inclined surface thereof through the feed channel, the top plate 414 is matched with the top of the vertical plane, the included angle between the top plate 414 and the vertical plane is 20 degrees to 40 degrees, the top plate 414 is obliquely arranged downwards towards the longitudinal axis direction of the cylinder 21 to form an inclined surface towards the central position of the cylinder 21, so that the molding sand on the top plate 414 can conveniently fall into the flow guide cone 417 and the feed pipe 415 in sequence, and the amount of the molding sand remained on the top plate 414 is reduced.
The molding sand in the feed pipe 415 slides down into the annular pipe 44, the annular pipe 44 is in winding connection with the side surface of the air storage barrel 42, the air storage barrel 42 is designed into a round table shape with a narrower upper part and a wider lower part, the side area of the air storage barrel 42 can be effectively increased, the volume of a cavity in the air storage barrel 42 can be increased, the water vapor containing amount is increased, the wind power and the humidity in the air storage barrel 42, which are close to the air inlet 43, are larger than those in other parts, the annular pipe 44 is designed into a spiral shape, so that the annular pipe 44 is in contact with the air storage barrel 42 at all angles, the humidity and the temperature difference in the annular pipe 44 are reduced, the path length of the spiral annular pipe 44 is longer than that of a straight pipe, the humidifying or drying time of the molding sand in the annular pipe 44 is prolonged, and the humidifying efficiency is improved; the annular pipe 44 is spirally wound, and the molding sand in the annular pipe 44 spirally slides downwards under the action of gravity and centrifugal force, so that the molding sand in the annular pipe 44 is thrown away, the blocking of the air inlet holes 45 is reduced, the accumulation of the molding sand is reduced, the contact area of the molding sand and wind or water vapor is increased, and the humidifying effect is improved.
When the humidity of the molding sand is too high, the controller 55 controls the hot air blower to start and conveys hot air from the air pipe 52, the mixing pipe 51 and the air inlet 43 into the air storage barrel 42 and the annular pipe 44, so that the molding sand is dried.
When the humidity of the molding sand is too low, the controller 55 controls the hot air blower to be turned on, and simultaneously, the electromagnetic valve is also turned on, so that water enters the atomizing nozzle 57 from the liquid inlet pipe 59, atomized water and wind enter the mixing pipe 51, and the wind brings water vapor into the air storage barrel 42 and the annular pipe 44 quickly, so that the water vapor is in full and quick contact with the molding sand in the annular pipe 44, and humidification of the molding sand is completed.
The molding sand after humidity adjustment enters the storage barrel 61, the humidity of the molding sand in the storage barrel 61 is measured by the second moisture meter 64, information is transmitted to the database, the humidity of the molding sand can be finely adjusted by the controller 55, the humidity requirement of the molding sand is met, and the molding sand with the required amount for molding can be adjusted in humidity and used immediately.
The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the above description of the preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will fully be understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (5)

1. A sand mold casting molding apparatus, comprising:
A humidity control device (4) for adjusting the humidity of the molding sand and making the humidity of the molding sand conform to the humidity range required for molding;
the humidity control device (4) comprises:
a material distributing member (41), wherein the material distributing member (41) is used for guiding falling molding sand;
the material distributing piece (41) comprises:
The device comprises a shell (411), wherein the inner wall of the shell (411) is connected with a plurality of convex plates (412), the convex plates (412) are distributed at equal intervals in the circumferential direction of the shell (411), one side, close to the axis of the shell (411), of each convex plate (412) is connected with a feeding pipe (415), an arc plate (416) is arranged between the adjacent feeding pipes (415), two ends of each arc plate (416) are respectively connected with one side, close to the adjacent feeding pipes (415), of each arc plate (416), a guide cone (417) is connected to the top of each arc plate (416), one guide riser (413) is arranged between the adjacent convex plates (412), one side, far away from the axis of each guide cone (417), of each guide riser (413) is connected with the inner wall of the shell (411), one side of each guide riser (413) is connected with the side of each guide cone (417), the bottom of each guide riser (413) is connected with the top of each guide cone (415), and the top of each guide riser (413) is connected with a top plate (414).
The air storage barrel (42), the top of air storage barrel (42) is fixedly connected with the bottom of the material distributing part (41), the air storage barrel (42) is in a round table shape, a plurality of annular pipes (44) are connected to the side surface of the air storage barrel (42) in a surrounding mode, a plurality of air inlet holes (45) are formed in the inner wall of the air storage barrel (42) in a penetrating mode and are communicated with the annular pipes (44), an air inlet (43) is formed in the middle of the side surface of the air storage barrel (42) in a penetrating mode, and the air inlet (43) is used for guiding air or water vapor into the air storage barrel (42), and the top of the annular pipes (44) is communicated with the bottom of the feeding pipe (415);
The first bottom plate (11), the top of first bottom plate (11) is connected with first backup pad (12), second backup pad (13), third backup pad (14), the upper portion of third backup pad (14) is connected with predicts wet device (2), the middle part and the casing (411) of third backup pad (14) are connected, predict wet device (2) include: the device comprises a barrel body (21), wherein the side surface of the barrel body (21) is connected with one side, close to a shell body (411), of a third supporting plate (14), an included angle between the bottom of the barrel body (21) and a vertical plane is 35-45 degrees, a first moisture measuring instrument (27) and a placing plate (29) are connected to the side surface of the barrel body (21), a guide rod (28) is electrically connected to the first moisture measuring instrument (27), the guide rod (28) penetrates through the inside of the placing part and is in sliding connection with the inside of the placing plate (29), the guide rod (28) is placed on the placing plate (29), the diameter of the guide rod (28) is smaller than that of a through hole (23), a top cover (22) is connected to the top of the barrel body (21), a plurality of through holes (23) are formed in the edge of the top cover (22) in an equidistant penetrating mode in the circumferential direction of the barrel body (21), a first discharging pipe (25) is communicated to the bottom of the barrel body (21) through a second bottom plate (24), and a connecting block (26) is connected to the center of the second bottom plate (24).
A control device (5) configured to adjust the release amount of water vapor and the opening and closing of the gas passage in accordance with the humidity of the molding sand measured by the first moisture meter (27), the control device (5) comprising: the mixing pipe (51), mixing pipe (51) are linked together with fresh air inlet (45), the side of mixing pipe (51) is linked together through tuber pipe (52) has air heater (53), air heater (53) are through first wire (54) electric connection there being controller (55), controller (55) are through second wire (56) electric connection there being valve (58), the both ends of valve (58) are linked together respectively and are had atomizer (57), feed liquor pipe (59), atomizer (57) set up in mixing pipe (51), controller (55) electric connection have the database, and the database is used for collecting the required water yield of different humidity molding sand regulation to molding humidity under the same environment or heating time;
A re-wetting apparatus (6) for measuring the humidity of the conditioned sand, the re-wetting apparatus (6) comprising: the storage barrel (61), the bottom of storage barrel (61) is connected with the top of first bottom plate (11), the side intercommunication of storage barrel (61) bottom has second discharging pipe (62), wet hole (63) have been seted up in the side penetration of storage barrel (61), wet hole (63) sliding connection has second moisture analyzer (64).
2. The sand mold casting molding apparatus as claimed in claim 1, wherein: the material guiding vertical plates (413) are composed of two plate bodies symmetrically distributed according to the axis of the flow guiding cone (417), the bottoms of the two plate bodies are respectively connected with the tops of the adjacent material feeding pipes (415), the included angle between the tops of the plate bodies and the vertical plane is 20 degrees to 40 degrees, and the adjacent material guiding vertical plates (413) are provided with material feeding channels and enable molding sand to flow into the material feeding pipes (415) through the material feeding channels.
3. The sand mold casting molding apparatus as claimed in claim 1, wherein: the diameter of the air inlet hole (45) is smaller than that of sand grains, water vapor and hot air in the air storage barrel (42) are blown into the annular pipe (44) through the air inlet hole (45), the top of each annular pipe (44) and the top of the air storage barrel (42) are located on the same plane, and the bottom of each annular pipe (44) and the bottom of the air storage barrel (42) are located on the same plane.
4. The sand mold casting molding apparatus of claim 1, further comprising: a rotating device (3) arranged to crush, filter and agitate the mould sand, the rotating device (3) comprising: screening box (31), the side of screening box (31) is close to one side fixed connection of casing (411) with third backup pad (14), the bottom of screening box (31) is connected with filter plate (35), be provided with motor (32) directly over filter plate (35), the stiff end and the connecting block (26) of motor (32) are kept away from one side of barrel (21) and are connected, the rotation portion of motor (32) is connected with crushing plate (34), bull stick (37) through pivot (33), crushing plate (34) are set up to smash the sand crowd under rotatory effect, the bottom of filter plate (35) is connected with the intercommunication and is discharged a section of thick bamboo (36), the bottom of a section of thick bamboo (36) is linked together with the top of casing (411).
5. The sand mold casting molding apparatus as claimed in claim 4, wherein: one end of the rotating shaft (33) sequentially penetrates through the filter plate (35), the guide cone (417) and the air storage barrel (42) and stretches into the air storage barrel (61), the rotating rod (37) is arranged in the air storage barrel (61), the center of the inner bottom of the air storage barrel (42) is communicated with the air storage barrel, and the humidity of molding sand in the air storage barrel (61) is regulated by controlling the opening and closing of the air storage barrel (42) and the channel of the air storage barrel (61).
CN202410392253.1A 2024-04-02 2024-04-02 Sand mould casting equipment Active CN117960994B (en)

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CN219272937U (en) * 2023-02-03 2023-06-30 邯郸钢铁集团有限责任公司 Powder humidification device with good humidification effect and difficult damage
CN116774743A (en) * 2023-06-19 2023-09-19 常州市法迪尔克粘土砂铸造机械有限公司 Multi-position sand humidity detection device for casting and method thereof

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