CN116727611A - Freezing sand mold cutting array nozzle surrounding blowing and sucking integrated device and method - Google Patents
Freezing sand mold cutting array nozzle surrounding blowing and sucking integrated device and method Download PDFInfo
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- CN116727611A CN116727611A CN202310590641.6A CN202310590641A CN116727611A CN 116727611 A CN116727611 A CN 116727611A CN 202310590641 A CN202310590641 A CN 202310590641A CN 116727611 A CN116727611 A CN 116727611A
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- 239000004576 sand Substances 0.000 title claims abstract description 296
- 238000007664 blowing Methods 0.000 title claims abstract description 127
- 238000005520 cutting process Methods 0.000 title claims abstract description 40
- 238000007710 freezing Methods 0.000 title claims abstract description 13
- 230000008014 freezing Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 56
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 18
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 238000003801 milling Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C19/00—Components or accessories for moulding machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Road Repair (AREA)
Abstract
The invention provides a freezing sand mold cutting array nozzle surrounding blowing and sucking integrated device and method. A large amount of waste sand generated by cutting and processing the frozen sand mold is swept by the rotation of the nozzles surrounded by the array, the suspension time of the waste sand is prolonged by negative pressure, the lifted waste sand is captured by the sand suction nozzle and enters a subsequent waste sand treatment device, and the efficient removal of the waste sand is realized. Aiming at the problem that the common air gun and the machine tool nozzle cannot blow up and bond the agglomerated waste sand, the invention ensures that the waste sand is effectively and efficiently discharged when the sand mold is actually cut by adopting a mode that the nozzle surrounds and rotates the sand blowing nozzle and the sand sucking nozzle to suck the sand under negative pressure and simultaneously coupling the local negative pressure of the fan blade to keep the suspension of the waste sand, thereby reducing the abrasion of a cutter and improving the cutting quality of the sand mold.
Description
Technical Field
The invention relates to the field of pneumatic sand discharge of frozen sand molds, in particular to a device and a method for integrating surrounding blowing and sucking of a frozen sand mold cutting array nozzle.
Background
The freezing sand mold technology aims at the problems of poor production flexibility, long production period, high resource waste and the like of the traditional sand mold casting method in small-batch product manufacture, proposes to replace an adhesive in molding sand by freezing water, freezes the molding sand in a low-temperature environment to obtain the freezing sand mold, and has the advantages of high flexibility in the manufacturing process, short production period and high material utilization rate.
In the numerical control cutting process of a frozen sand mold, how to effectively remove sand scraps generated by cutting sand blanks is always a key technology and process for cutting and forming the digitized frozen sand mold, especially, the cutting and forming of the frozen sand mold are more important, in the milling process of a frozen sand mold cavity, waste sand is remained in the sand mold, sand scraps with certain moisture are accumulated and adhered in the cavity, a common handheld spray gun or a machine tool cooling nozzle cannot blow up the adhered waste sand, sand suction by a dust collector is limited by a sand mold cavity structure, the sand suction is difficult to track, especially in the milling process of a deep cavity structure, if the waste sand cannot be cleaned timely, the waste sand is easy to be adhered on the processed surface of the sand mold again, and at the moment, the waste sand is more difficult to process, a large amount of waste sand is accumulated in the processed cavity, the surface precision is damaged, and the processing quality and the service life of a cutter are seriously influenced. Therefore, how to add sand discharge devices for frozen sand molds to digital frozen sand mold green casting equipment is of great importance.
Disclosure of Invention
In order to solve the problems, the invention discloses a device and a method for integrating the surrounding blowing and sucking of a cutting array nozzle of a frozen sand mold, which make up for the gap in the aspect of a pneumatic sand discharging device of the frozen sand mold, prevent the problem of surface precision loss of the frozen sand mold caused by inconvenient sand discharging in the cutting and forming process, improve the processing quality of the frozen sand mold, prolong the service life of a cutter and improve the operability and the digital degree of sand discharging of the sand mold.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
freezing sand mould cutting array nozzle encircles blowing and sucking integrated device includes: the device comprises a cutting module, a rotary driving module, a negative pressure fan blade module, a speed reducer module, a rotary blowing and sucking sand and dust module and a pneumatic conveying module.
Further, the cutting module is used for numerically controlling cutting of the frozen sand mold through the cutter and simultaneously generating waste sand cuttings, and comprises an electric spindle, a frame for supporting the whole device, a milling cutter and the frozen sand mold to be cut.
Further, the rotary driving module comprises a sand blowing and sucking device for providing rotary power and comprises a rotary driving seat and a motor; the rotary driving seat is fixed on the frame, and a motor is fixed at the top of the rotary driving seat.
Further, the negative pressure fan blade module is arranged on the rotary driving seat, and the suspension time of blown sand grains is prolonged by the negative pressure generated by rotation, and the negative pressure fan blade module comprises a blade frame arranged on the rotary driving seat, fan blades arranged on the blade frame, and a wind shielding sand collecting cover arranged above the fan blades.
Further, the speed reducer transmits rotary power to the rotary blowing and sand sucking chip module and simultaneously controls the rotating speed of the rotary blowing and sand sucking chip module, and the speed reducer comprises a central gear shaft, and a planetary gear and a flange gear ring form a planetary gear speed reducer.
Further, the rotary blowing and sand-sucking dust module blows up waste sand through rotary air injection and collects suspended waste sand through negative pressure, and the rotary blowing and sand-sucking dust module comprises an air disc assembly, a sand blowing rotary paddle, a sand sucking rotary paddle, nozzles, sand sucking nozzles and a connecting seat, wherein the air disc assembly comprises a sand blowing air disc and a sand sucking air disc, and a plurality of nozzles are connected to the bottom of the sand blowing rotary paddle.
Further, the pneumatic conveying module provides an air source for the rotary blowing and sand sucking dust module and performs fluid parameter control, and comprises a block blowing sand component and a sand sucking component; the sand blowing assembly comprises an annular sand blowing air passage, a sand blowing switching cavity, an air pipe, a heat exchanger, a pulse valve and an air compressor; the sand sucking assembly comprises an annular sand sucking air passage, a sand sucking switching cavity, a sand sucking pipe, a pressure regulating valve, a cyclone separator and a negative pressure fan; the sand blowing transfer cavity is provided with a sand blowing transfer port, and the sand sucking transfer cavity is provided with a sand sucking transfer port.
Further, a certain gap is reserved between the frame and the motorized spindle and is used for accommodating an annular sand blowing air passage, a sand sucking air passage, an air pipe, a sand sucking pipe, a sand blowing switching cavity and a sand sucking switching cavity in the pneumatic conveying module.
Further, the sun gear shaft serves as a sun gear, and the flange gear ring serves as an inner gear ring; the central gear shaft is connected with the blade frame, the flange gear ring is connected with the air disc assembly, the blade frame drives the central gear shaft to actively rotate during working, the planet gears are not moved, the flange gear ring drives the air disc assembly to be driven, the speed reduction transmission is carried out, the transmission ratio is generally 5-10, and the direction of the fan blades is opposite to that of the air disc assembly.
Further, the blowing/sucking air disc and the blowing/sucking rotary paddle are internally provided with air passages, and an air flow passage is formed during installation. The inner cylindrical surface of the sand blowing/sucking air disc is provided with an air vent which is connected with the annular sand blowing/sucking air passage; when sand is blown, air flow enters the air passage from the sand blowing switching cavity, enters the air port of the air disk from the air passage outlet, is blown out from the nozzle along the air passage, and when sand is sucked, the air flow and waste sand are sucked into the sand sucking switching cavity along the path in a reverse direction.
Further, the sand-sucking air disk and the sand-blowing air disk are fixed to rotate synchronously, and the sand-blowing rotary paddles and the sand-sucking rotary paddles can be symmetrically arranged on the air disk assembly, and can also be arranged along the circumference at intervals, wherein the number of the sand-blowing rotary paddles is 3, and the number of the sand-sucking rotary paddles is 3.
Further, when the fan blade rotates, local negative pressure is generated below the fan blade due to the elevation angle and the rotation direction of the fan blade, and waste sand blown up by the nozzle is adsorbed through the negative pressure, so that the sand suction nozzle is convenient to suck sand; the wind shielding sand collecting cover shields upward air flow generated by the fan blades, so that waste sand is prevented from being blown into the electric spindle and the like by the air flow of the fan blades, and the air flow is guided to fall back to the bottom.
Further, the nozzle may be a high pressure nozzle or an air knife structure to enhance the air flow strength.
The invention also provides a freezing sand mould cutting array nozzle surrounding blowing and sucking integrated method, which comprises the following steps:
step 1: observing that the milling cutter cuts into the frozen sand mould in the numerical control machining process, starting a motor when a large amount of waste sand is generated, and driving the fan blades to rotate by the rotary driving seat;
step 2: the rotating speed of the air disc is controlled by a planetary gear reducer at a certain reduction ratio, and the sand blowing rotary paddle, the sand sucking rotary paddle, the nozzle and the sand sucking nozzle are driven to rotate;
step 3: starting an air compressor, enabling air flow to become low-temperature air flow through a heat exchanger, enabling the air flow to enter a sand blowing switching cavity in the frame along an air pipe, enabling the air flow to enter a sand blowing air disc through an annular sand blowing air flue, and finally blowing out the air flow from a nozzle;
step 4: starting a negative pressure fan, adjusting a pressure regulating valve, generating negative pressure in a sand suction pipeline, absorbing the waste sand blown up in the step 3 by a sand suction nozzle, and enabling the waste sand to enter a cyclone separator through the sand suction pipe;
step 5: waste sand, liquid drops, ice residues and the like in the cyclone separator are discharged from the bottom under the action of centrifugal force and are discharged into a collecting box, so that the waste sand is collected;
further, the pulse valve controls the frequency of the sand-blowing airflow, the sand-blowing rotary paddle rotates for a certain angle, and the airflow is intermittently sprayed out of the nozzle to lift up the waste sand; the included angle between the nozzle and the normal line of the installation surface of the sand blowing swirl paddle is 0-30 degrees, and the recommended interval injection time T=2pi/ωZ, wherein ω is the rotation speed of the swirl paddle, and Z is the total number of the swirl paddles.
The invention has the beneficial effects that:
1. protecting the cutter and prolonging the service life of the cutter. According to the sand discharging method for the circular suction blowing of the nozzle, the waste sand generated in the cutting process is discharged efficiently, so that the waste sand is prevented from being accumulated in a large amount in the sand mold cavity, the collision between the waste sand and the cutter is reduced, and the mechanical abrasion caused by the fact that the cutter is scratched by sand grains is reduced.
2. And the cutting quality of the frozen sand mold is improved. And the waste sand generated by cutting is blown up and sucked up through negative pressure, so that a large amount of waste sand is prevented from being adhered to the processed surface of the sand mold again, and the molding precision of the sand mold is improved.
3. Realize the high-efficient sand discharge. The problem that the common air gun and the machine tool nozzle cannot blow up and bond the agglomerated waste sand is solved, the mode of rotating the sand blowing nozzle around and sucking the sand by the negative pressure of the sand sucking nozzle is adopted, and meanwhile, the local negative pressure of the coupling fan blade keeps the waste sand to be suspended, so that the waste sand is effectively and efficiently discharged when the sand mold is actually cut.
Drawings
FIG. 1 is a schematic view of the structure of the device without the installed wind shielding sand collecting cover.
Fig. 2 is a schematic diagram of the internal structure of the present invention.
Fig. 3 is a schematic structural view of the speed reducer module of the present invention.
Fig. 4 is a schematic diagram of an assembly structure of the rotary blowing and sucking sand dust module and the pneumatic conveying module.
Reference numerals: 1. a milling cutter; 2. a sand blowing rotary paddle; 3. a sand blowing air disc; 4. a sand sucking air disc; 5. a decelerator module; 6. a rotary driving seat; 7. a motor; 8. a frame; 9. an electric spindle; 10. a wind shielding sand collecting cover; 11. a fan blade; 12 leaf frames; 13. sand sucking rotary paddle; 14. a flange gear ring; 15. a planet wheel; 16. a sun gear shaft; 17. a nozzle; 18. an annular sand-blowing air passage; 19. a sand blowing transfer cavity; 20. a sand blowing interface; 21. an annular sand suction air passage; 22. a sand suction nozzle; 23. a sand sucking and transferring port; 24. and a sand sucking transfer cavity.
Detailed Description
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in fig. 1, the freezing sand mold cutting array nozzle surrounding blowing and sucking integrated device of the present embodiment includes: the device comprises a cutting module, a rotary driving module, a negative pressure fan blade module, a speed reducer module 5, a rotary blowing and sucking sand and dust module and a pneumatic conveying module.
The cutting module is used for cutting the frozen sand mold through a cutter in a numerical control mode and simultaneously generating waste sand cuttings and comprises an electric spindle 9, a frame 8 for supporting the whole device, a milling cutter 1 and the frozen sand mold to be cut. In the sand discharge operation, the cutting module is always started, the rotating speed of the cutter is 3000-6000 r/min, and the cutting depth is 2-5 mm. A certain gap is reserved between the frame and the motorized spindle and is used for accommodating an annular sand blowing air passage 18, an annular sand sucking air passage 21, an air pipe, a sand sucking pipe, a sand blowing switching cavity 19 and a sand sucking switching cavity 24 in the pneumatic conveying module.
The rotary driving module provides rotary power for the rotary blowing and sucking sand dust module and comprises a rotary driving seat 6 and a motor 7; the rotary driving seat is fixed on the frame, and a motor is fixed at the top of the rotary driving seat. The rotary driving module provides rotary power for the integral sand blowing and sucking device.
The negative pressure fan blade module is arranged on the rotary driving seat and comprises a blade frame arranged on the rotary driving seat and fan blades 11 arranged on the blade frame 12. When the fan blade rotates, local negative pressure is generated below the fan blade due to the elevation angle and the rotation direction of the fan blade, and waste sand blown up by the nozzle 17 is adsorbed through the negative pressure, so that the sand suction nozzle 22 is convenient to suck sand. As shown in fig. 2, a wind shielding and sand collecting cover 10 can be additionally arranged to block upward air flow generated by the fan blades, prevent waste sand from being blown into the electric spindle by the air flow of the fan blades, and guide the air flow to fall back to the bottom.
The speed reducer transmits rotary power to the rotary blowing and sand-dust sucking module and simultaneously controls the rotating speed of the rotary blowing and sand-dust sucking module, and comprises a sun gear shaft 16, a planet wheel 15 and a flange gear ring 14 to form a planet gear speed reducer. The sun gear shaft serves as a sun gear, and the flange gear ring serves as an inner gear ring; the central gear shaft is connected with the blade frame, the flange gear ring is connected with the air disc assembly, the blade frame drives the central gear shaft to actively rotate during working, the planet gears are not moved, the flange gear ring drives the air disc assembly to be driven, and the speed reduction transmission is carried out, and the transmission ratio is generally 5-10.
The rotary blowing sand and dust absorbing module is a main blowing sand absorbing component in the embodiment, the device is used for blowing up waste sand through rotary air injection and collecting suspended waste sand through negative pressure, the device comprises an air disc assembly, a sand blowing rotary paddle 2, a sand absorbing rotary paddle 13, nozzles, sand absorbing nozzles and a connecting seat, the air disc assembly comprises a sand blowing air disc 3 and a sand absorbing air disc 4, and a plurality of nozzles are connected to the bottom of the sand blowing rotary paddle. The sand-sucking air disk and the sand-blowing air disk are fixed to rotate synchronously, and the sand-blowing rotary paddles and the sand-sucking rotary paddles can be symmetrically arranged on the air disk assembly, and can be arranged along the circumference at intervals, wherein the number of the sand-blowing rotary paddles is 3, and the number of the sand-sucking rotary paddles is 3. The blowing/sucking sand air disc and the blowing/sucking sand rotating paddle are internally provided with air passages, and an air flow channel is formed during installation. The inner cylindrical surface of the sand blowing/sucking air disc is provided with an air vent which is connected with the annular sand blowing/sucking air passage; when sand is blown, air flow enters the air passage from the sand blowing switching cavity, enters the air port of the air disk from the air passage outlet, is blown out from the nozzle along the air passage, and when sand is sucked, the air flow and waste sand are sucked into the sand sucking switching cavity along the path in a reverse direction. In order to further improve the sand blowing effect, a high-pressure nozzle or an air knife structure can be adopted to strengthen the air flow strength.
The pneumatic conveying module provides an air source for the rotary blowing and sand sucking dust module and performs fluid parameter control, and comprises a block blowing sand component and a sand sucking component; the sand blowing assembly comprises an annular sand blowing air passage, a sand blowing switching cavity, an air pipe, a heat exchanger, a pulse valve and an air compressor; the sand sucking assembly comprises an annular sand sucking air passage, a sand sucking switching cavity, a sand sucking pipe, a pressure regulating valve, a cyclone separator and a negative pressure fan; the sand blowing transfer cavity 19 is provided with a sand blowing transfer port 20, and the sand sucking transfer cavity 24 is provided with a sand sucking transfer port 23.
When the device is used, firstly, when the milling cutter cuts into the frozen sand mould to generate a large amount of waste sand, the motor is started, and the rotary driving seat drives the fan blades to start to rotate and generate negative pressure. The blade frame is fixedly connected with the central gear shaft, the flange gear ring is connected with the air disc assembly through a bolt, the planetary gear reducer controls the rotating speed of the air disc assembly at a certain reduction ratio, so that the rotary paddle, the upper nozzle and the sand suction nozzle of the rotary paddle are driven to rotate, the pulse valve controls the frequency of sand blowing air flow, the rotary paddle rotates for a certain angle, and the air flow is intermittently sprayed out of the nozzle to lift waste sand; the included angle between the nozzle and the normal line of the installation surface of the sand blowing swirl paddle is 0-30 degrees, and the recommended interval injection time T=2pi/ωZ, wherein ω is the rotation speed of the swirl paddle, and Z is the total number of the swirl paddles. And then starting the air compressor, enabling air flow to become low-temperature air flow through the heat exchanger, enabling the air flow to enter a sand blowing switching cavity in the frame along the air pipe, enabling the air flow to enter a sand blowing air disc through a sand blowing air passage, and finally blowing out the air flow from the nozzle. Starting a negative pressure fan, adjusting a pressure regulating valve, generating negative pressure in a sand suction pipeline, absorbing the waste sand blown up in the step 3 by a sand suction nozzle, and enabling the waste sand to enter a cyclone separator through the sand suction pipe. Finally, the waste sand, liquid drops, ice residues and the like in the cyclone separator are discharged from the bottom under the action of centrifugal force and are discharged into a collecting box, so that the collection of the waste sand is completed, and the effect of efficiently discharging the frozen sand mold is achieved.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features.
Claims (8)
1. Freezing sand mould cutting array nozzle encircles blowing and sucking integrated device, its characterized in that includes:
the cutting module is used for cutting the frozen sand mold through a cutter in a numerical control manner and simultaneously generating waste sand cuttings, and comprises an electric spindle (9), a frame (8) for supporting the whole device, a milling cutter (1) and the frozen sand mold to be cut;
the rotary driving module provides rotary power for the rotary blowing and sucking sand dust module and comprises a rotary driving seat (6) and a motor (7); the rotary driving seat (6) is fixed on the frame (8) and the top of the rotary driving seat is fixed with a motor (7);
the negative pressure fan blade module prolongs the suspension time of blown sand grains by negative pressure generated by rotation and comprises a blade frame (12) arranged on a rotary driving seat (6), fan blades (11) arranged on the blade frame and a wind shielding sand collecting cover (10) arranged above the fan blades (11);
the speed reducer module (5) transmits rotary power to the rotary blowing and sand-dust sucking module and simultaneously controls the rotating speed of the rotary blowing and sand-dust sucking module, and comprises a central gear shaft (16), and a planetary gear reducer is formed by a planetary gear (15) and a flange gear ring (14);
the rotary blowing sand and dust absorbing module blows up waste sand through rotary air injection and collects suspended waste sand through negative pressure, and the rotary blowing sand and dust absorbing module comprises an air disc assembly, a sand blowing rotary paddle (2), a sand absorbing rotary paddle (13), nozzles (17), sand absorbing nozzles (22) and a connecting seat, wherein the air disc assembly comprises a sand blowing air disc (3) and a sand absorbing air disc (4), and a plurality of nozzles (17) are connected to the bottom of the sand blowing rotary paddle (2);
the pneumatic conveying module is used for providing an air source for the rotary blowing and sand-sucking dust module and controlling fluid parameters, and comprises a block blowing component and a sand sucking component; the sand blowing assembly comprises an annular sand blowing air passage (18), a sand blowing switching cavity (19), an air pipe, a heat exchanger, a pulse valve and an air compressor; the sand sucking assembly comprises an annular sand sucking air passage (21), a sand sucking switching cavity (24), a sand sucking pipe, a pressure regulating valve, a cyclone separator and a negative pressure fan; the sand blowing transfer cavity (19) is provided with a sand blowing transfer port (20), and the sand sucking transfer cavity (24) is provided with a sand sucking transfer port (23).
2. The integrated device for blowing and sucking around the frozen sand mold cutting array nozzle according to claim 1, wherein a gap exists between the frame (8) and the motorized spindle (9) and is used for accommodating an annular sand blowing air passage (18), an annular sand sucking air passage (21), an air pipe, a sand sucking pipe, a sand blowing switching cavity (19) and a sand sucking switching cavity (24) in the pneumatic conveying module.
3. The frozen sand mold cutting array nozzle surrounding blowing and sucking integrated device according to claim 1, wherein: the sun gear shaft (16) is connected with the blade frame (12), and the flange gear ring (14) is connected with the air disc assembly.
4. The freezing sand mould cutting array nozzle encircling blowing-sucking integrated device according to claim 1, wherein air passages are formed in the sand blowing air disc (3), the sand sucking air disc (4), the sand blowing rotary paddles (2) and the sand sucking rotary paddles (13), and an air flow passage is formed during installation; the inner cylindrical surfaces of the sand blowing air disc (3) and the sand sucking air disc (4) are provided with air vents which are respectively connected with the annular sand blowing air passage (18) and the annular sand sucking air passage (21).
5. The freezing sand mould cutting array nozzle encircling blowing and sucking integrated device according to claim 1, wherein a sand sucking air disc (4) and a sand blowing air disc (3) are fixedly and synchronously rotated, and sand blowing rotary paddles (2) and sand sucking rotary paddles (13) are symmetrically arranged on an air disc assembly or are distributed at intervals along the circumference, wherein 3 sand blowing rotary paddles (2) and 3 sand sucking rotary paddles (13) are arranged.
6. A frozen sand cutting array nozzle encircling blow-suction integrated device according to claim 1, characterized in that the nozzle (17) is a high pressure nozzle or an air knife structure.
7. A method for integrating blowing and sucking around a frozen sand mold cutting array nozzle, which is realized based on the frozen sand mold cutting array nozzle blowing and sucking integrated device as claimed in any one of claims 1 to 8, and comprises the following steps:
step 1: during numerical control machining, the milling cutter is observed to cut into the frozen sand mould, when a large amount of waste sand is generated, the motor (7) is started, and the rotary driving seat (6) drives the fan blades (11) to rotate;
step 2: the rotating speed of the air disc is controlled through a planetary gear reducer, and the sand blowing rotary paddle (2), the sand sucking rotary paddle (13), the nozzle (17) and the sand sucking nozzle (22) are driven to rotate;
step 3: starting an air compressor, enabling air flow to become low-temperature air flow through a heat exchanger, enabling the air flow to enter a sand blowing switching cavity (19) in the frame along an air pipe, enabling the air flow to enter a sand blowing air disc (3) through an annular sand blowing air passage (18), and finally blowing out from a nozzle;
step 4: starting a negative pressure fan, adjusting a pressure regulating valve, generating negative pressure in a sand suction pipeline, absorbing the waste sand blown up in the step 3 by a sand suction nozzle (22), and conveying the waste sand into a cyclone separator through a sand suction pipe through a sand suction switching cavity (24);
step 5: and the waste sand, liquid drops, ice residues and the like in the cyclone separator are discharged from the bottom under the action of centrifugal force, so that the waste sand collection is completed.
8. The method for integrating the freezing sand mould cutting array nozzle encircling blowing and sucking as set forth in claim 7, wherein the pulse valve controls the frequency of the sand blowing air flow, the sand blowing rotary paddle (2) rotates by a certain angle, the air flow is intermittently sprayed out from the nozzle (17) to lift the waste sand; the included angle between the nozzle (17) and the normal line of the installation surface of the sand-blowing rotary paddle (2) is 0-30 degrees, and the interval spraying time T=2pi/ωZ, wherein ω is the rotating speed of the sand-blowing rotary paddle (2), and Z is the total number of the sand-blowing rotary paddles (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310590641.6A CN116727611A (en) | 2023-05-23 | 2023-05-23 | Freezing sand mold cutting array nozzle surrounding blowing and sucking integrated device and method |
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| CN202310590641.6A CN116727611A (en) | 2023-05-23 | 2023-05-23 | Freezing sand mold cutting array nozzle surrounding blowing and sucking integrated device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117862124A (en) * | 2024-03-13 | 2024-04-12 | 常州市南方驱动技术有限公司 | A blow-off device for numerical control gear hobbing machine gear machining |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117862124A (en) * | 2024-03-13 | 2024-04-12 | 常州市南方驱动技术有限公司 | A blow-off device for numerical control gear hobbing machine gear machining |
| CN117862124B (en) * | 2024-03-13 | 2024-05-10 | 常州市南方驱动技术有限公司 | A blow-off device for numerical control gear hobbing machine gear machining |
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