WO2020077519A1 - 吹气罩、制芯装置及吹气方法 - Google Patents

吹气罩、制芯装置及吹气方法 Download PDF

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Publication number
WO2020077519A1
WO2020077519A1 PCT/CN2018/110370 CN2018110370W WO2020077519A1 WO 2020077519 A1 WO2020077519 A1 WO 2020077519A1 CN 2018110370 W CN2018110370 W CN 2018110370W WO 2020077519 A1 WO2020077519 A1 WO 2020077519A1
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WO
WIPO (PCT)
Prior art keywords
air blowing
air
hole
blowing
housing
Prior art date
Application number
PCT/CN2018/110370
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
杨林龙
Original Assignee
苏州明志科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州明志科技有限公司 filed Critical 苏州明志科技有限公司
Priority to PCT/CN2018/110370 priority Critical patent/WO2020077519A1/zh
Priority to DE112018002628.0T priority patent/DE112018002628B4/de
Priority to CN201880002466.1A priority patent/CN111565868B/zh
Publication of WO2020077519A1 publication Critical patent/WO2020077519A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B22C7/065—Venting means
    • 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
    • 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
    • B22C9/123—Gas-hardening

Definitions

  • the present disclosure relates to the technical field of sand core manufacturing, and in particular, to an air blowing hood, a core making device, and an air blowing method.
  • the air blowing hood is the main component of the core making device. During the core making process, the air blowing hood will be compressed over the mold to form a closed space, and then the corresponding catalytic gas enters the mold through the air blowing hood to solidify the sand core To catalysis.
  • the curing effect of the sand core is poor, and the stability of the blowing process is poor.
  • the objectives of the present disclosure include, for example, to provide an air blowing hood that improves the deficiencies of the prior art, which can improve the curing effect of the sand core and improve the stability of the air blowing process.
  • the purpose of the present disclosure also includes providing a core making device, which can improve the curing effect of the sand core and improve the stability of the blowing process.
  • the object of the present disclosure also includes providing an air blowing method, which can improve the curing effect of the sand core and improve the stability of the air blowing process.
  • An embodiment of the present disclosure provides an air blowing hood, which includes:
  • a housing an air blowing port is provided on one side of the housing, a partition plate is provided in the housing, the partition plate divides the accommodating cavity in the housing into a first chamber and the air blowing port Connected second chamber;
  • a conveying pipe the conveying pipe is located in the first chamber, the conveying pipe is provided with an air inlet end and an air outlet end communicating with each other, the air outlet end is connected with the partition plate and is connected with the second chamber Connected, the conveying pipe is provided with an input part configured to flow catalytic liquid into the conveying pipe, and the input part is located between the intake end and the exhaust end;
  • a heating element configured to heat the conveying pipe.
  • the air blowing hood further includes a communication tube, one end of the communication tube is provided with a communication end, and the communication end communicates with the input portion.
  • the housing is provided with a first through hole communicating with the first chamber, and an end of the communication tube away from the communicating end is inserted into the first through hole and communicates with the housing connection.
  • the housing is further provided with a second through hole communicating with the first chamber, and the intake end is penetrated through the second through hole and connected with the housing.
  • the first through hole is closer to the partition plate relative to the second through hole.
  • the partition plate is provided with a third through hole communicating with the second chamber, and the gas outlet is penetrated in the third through hole and connected to the partition plate.
  • the third through hole is located at the center of the partition plate.
  • the inlet end and the outlet end are respectively located at both ends of the conveying pipe, and the conveying pipe is meanderingly arranged in a direction from the inlet end to the outlet end.
  • the heating element includes a heating tube, and the heating tube is arranged around the conveying pipe.
  • the air inlet end and the air outlet end are respectively located at both ends of the conveying pipe
  • the conveying pipe is meanderingly arranged in the direction from the air inlet end to the air outlet end
  • the conveying pipe has A plurality of pipe sections arranged in sequence and parallel to each other, the heating pipe and the pipe section are arranged crosswise, and the heating pipe is arranged between two adjacent pipe sections.
  • the air blowing hood further includes a sealing strip, and the sealing strip and the housing are configured to be connected to an end portion contacting the core box.
  • the housing and the partition plate are integrally formed.
  • An embodiment of the present disclosure also provides a core making device, including a core box and the above-mentioned air blowing hood, the core box includes a first core box and a second core box, the first core box and the second The core box is connected to form a molding cavity inside the core box, the first core box is provided with an air blowing hole communicating with the molding cavity, and the air blowing port communicates with the air blowing hole.
  • the core making device further includes an air blowing assembly
  • the air blowing assembly includes an air blowing plate and an air blowing rod connected to the air blowing plate, and the air blowing rod is vertically arranged with the air blowing plate
  • the blower plate has a hollow channel, the blower plate is provided with an air inlet communicating with the channel, and the end of the blower rod away from the blower plate is provided with a communication channel
  • An exhaust hole, an end of the blowing rod away from the blowing plate is configured to extend into the blowing hole and communicate with the molding cavity.
  • the core making device further includes a sealing plate, the sealing plate is provided with a through hole configured to pierce the blowing rod, the sealing plate is attached to the first core box away from the On one side surface of the second core box.
  • An embodiment of the present disclosure also provides an air blowing method, which is implemented using the above air blowing hood, and the air blowing method includes:
  • the catalytic liquid flows from the input part into the conveying pipe, so that the heated air atomizes the catalytic liquid by heating, and finally forms a mixed gas of catalytic gas and air, and passes the mixed gas through the outlet gas End into the second chamber.
  • the beneficial effects of the embodiments of the present disclosure include, for example:
  • the air is heated by the heating element after entering the conveying pipe.
  • the heated air heats and atomizes the catalytic liquid entering the conveying pipe during the flow process, and finally forms The mixed gas of catalytic gas and air enters the second cavity and finally enters the molding cavity of the core box.
  • the solidification effect of the sand core can be improved, and the blowing process is more stable.
  • FIG. 1 is a schematic structural view of a core-making device provided by an embodiment of the present disclosure from a first perspective;
  • FIG. 2 is a schematic structural view from a second perspective of a core-making device provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic structural view from a third perspective of a core making device provided by an embodiment of the present disclosure
  • FIG. 4 is a flowchart of an air blowing method provided by an embodiment of the present disclosure.
  • Icons 100-blowing hood; 10-housing; 11-blowing port; 12-divider; 121-third through hole; 13-first chamber; 14-second chamber; 15-first passage Hole; 16-second through hole; 20-conveying pipe; 21-intake end; 22-outlet end; 23-input part; 30-heating tube; 40-communication tube; 41-communication end; 50-sealing strip; 200-core box; 210-first core box; 211-blowing hole; 220-second core box; 230-forming cavity; 300-blowing assembly; 310-blowing plate; 311-air inlet; 320-blowing Gas rod; 321- vent hole; 400- sealing plate; 500- sand core.
  • the terms “setup”, “installation”, “connected”, “connected”, etc. should be broadly understood, for example, it can be The fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between the two components.
  • the fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between the two components.
  • the specific meaning of the above terms in the present disclosure may be understood in specific situations.
  • this embodiment provides an air blowing hood 100, which includes:
  • the housing 10 is provided with an air blowing port 11 on one side of the housing 10, and a partition plate 12 is provided in the housing 10. 11
  • the second chamber 14 communicating;
  • the conveying pipe 20 is located in the first chamber 13.
  • the conveying pipe 20 is provided with an air inlet end 21 and an air outlet end 22 that are connected to each other.
  • the air outlet end 22 is connected to the partition plate 12 and communicated with the second chamber 14.
  • the delivery pipe 20 is provided with an input portion 23 configured to flow the catalytic liquid into the delivery pipe 20, and the input portion 23 is located between the intake end 21 and the outlet end 22;
  • the heating element is configured to heat the conveying pipe 20.
  • the air blowing hood 100 integrates the heating element and the conveying pipe 20 into the same housing 10, so that after the air enters the conveying pipe 20, it is heated by the heating element, and the heated air enters the conveying pipe 20 during the flow process.
  • the catalytic liquid is atomized by heating, and finally a mixed gas of catalytic gas and air enters the second chamber 14 and finally enters the molding cavity 230 of the core box 200. In this way, the solidification effect of the sand core 500 can be improved, and Make the blowing process more stable.
  • the side of the casing 10 with the air blowing port 11 is covered on the core box 200, so that the mixed gas can smoothly enter the molding cavity 230 of the core box 200, and catalytically solidify the sand core 500 in the molding cavity 230 .
  • This method can be used in the field of casting, specifically can be used for cold core making, warm core making, SO 2 curing process, CO 2 curing process, etc.
  • the heating element is also integrated in the housing 10, which can reduce the delivery distance of the catalytic gas, thereby reducing energy consumption, and the energy saving effect is obvious, and the temperature of the catalytic gas will not be reduced due to the long delivery distance, which can improve The effect of core 500 curing.
  • the air blowing hood 100 further includes a communication tube 40.
  • One end of the communication tube 40 is provided with a communication end 41, and the communication end 41 communicates with the input portion 23.
  • the catalytic liquid enters the conveying pipe 20 through the communication pipe 40.
  • a part of the conveying pipe 20 may be attached to the inner wall of the housing 10, and the external catalytic liquid pipe directly passes through the housing 10 The hole communicates with the delivery pipe 20.
  • the housing 10 is provided with a first through hole 15 communicating with the first chamber 13.
  • the end of the communication tube 40 away from the communicating end 41 is inserted into the first through hole 15 and connected to the housing 10.
  • a first through hole 15 is opened on the wall of the housing 10, and the end of the communication tube 40 extends into the first through hole 15 and is relatively fixed with the housing 10.
  • the communication tube 40 The outer wall of the housing 10 is not protruded.
  • the communication tube 40 can also protrude from the housing 10 through the first through hole 15.
  • the communication tube 40 can also be formed integrally with the housing 10 , Achieved by casting.
  • the housing 10 is further provided with a second through hole 16 communicating with the first chamber 13, and the intake end 21 is inserted into the second through hole 16 and connected to the housing 10.
  • the intake end 21 also does not protrude from the outer wall of the housing 10.
  • the intake end 21 may protrude from the housing 10 through the second through hole 16, or, the intake The end 21 is integrally formed with the housing 10 and is realized by casting.
  • the first through hole 15 is closer to the partition plate 12 relative to the second through hole 16.
  • the arrangement of the second through hole 16 away from the partition plate 12 can make the path of the conveying pipe 20 longer.
  • the input portion 23 is closer to the outlet end 22 relative to the inlet end 21. After the intake end 21 takes in air, the air needs to flow through a longer path in the delivery pipe 20 to reach the outlet end 22, during which it can be sufficiently heated by the heating element, so that the air reaching the input portion 23 can be very fast Heating atomization of the catalytic liquid.
  • the partition plate 12 is provided with a third through hole 121 communicating with the second chamber 14, and the gas outlet 22 is inserted into the third through hole 121 and connected to the partition plate 12.
  • the air outlet 22 does not protrude from the outer wall of the partition plate 12, in other embodiments, the air outlet 22 can protrude from the partition plate 12 through the third through hole 121 so that the air outlet 22 is located In the second chamber 14, or the gas outlet 22 is integrally formed with the partition plate 12, and is realized by casting.
  • the third through hole 121 is located at the center of the partition plate 12.
  • the third through hole 121 provided at the central position enables the gas outlet 22 to quickly fill the second chamber 14 after being discharged.
  • the number of the gas outlets 22 is two or more, the number of the third through holes 121 can be correspondingly increased, and the distribution thereof is generally evenly distributed near the center of the partition plate 12.
  • the inlet end 21 and the outlet end 22 are respectively located at both ends of the delivery pipe 20, and the delivery pipe 20 is meanderingly arranged in the direction from the inlet end 21 to the outlet end 22.
  • the meandering conveying pipe 20 can increase the path of the conveying pipe 20 in a smaller space, so that the air can stay in the conveying pipe 20 for a longer time, which is convenient for the heating element to heat it.
  • the number of the inlet end 21 and the outlet end 22 of the same delivery pipe 20 may also be two or more, or at least two delivery pipes 20 are arranged in the first chamber 13.
  • the heating element includes a heating tube 30 that is arranged around the conveying pipe 20.
  • the heating tube 30 may be an infrared heating tube 30, and heating is performed by energization.
  • a high-temperature fluid flows through the heating tube 30 to achieve heating by heat exchange.
  • heating pipe 30 may be in contact with the conveying pipe 20 or may not be in contact.
  • the heating element is a heating wire, and the heating wire is wound on the outer wall of the conveying pipe 20, or is located inside the conveying pipe 20.
  • the intake end 21 and the outlet end 22 are respectively located at both ends of the delivery pipe 20.
  • the delivery pipe 20 is meanderingly arranged in the direction from the inlet end 21 to the outlet end 22.
  • the delivery pipe 20 has a plurality of For mutually parallel pipe sections, the heating pipe 30 and the pipe section are arranged crosswise, and the heating pipe 30 is arranged between two adjacent pipe sections.
  • the number of heating tubes 30 may be multiple, arranged side by side between two adjacent tube sections of the conveying pipe 20, or a heating tube 30 may meander to form multiple tube sections after winding
  • the pipes 30 and the conveying pipes 20 are arranged alternately.
  • the air blowing hood 100 further includes a sealing strip 50.
  • the sealing strip 50 is configured to be connected to the end of the casing 10 that is in contact with the core box 200.
  • the provision of the sealing strip 50 can further improve the sealing effect and prevent the leakage of the catalytic gas.
  • the housing 10 and the partition plate 12 are integrally formed.
  • the conveying pipe 20, the communication pipe 40, and the heating pipe 30 can all be integrally formed with the housing 10. It is realized by casting, so that the catalytic gas is not easy to leak out, and the blowing pressure can be better ensured, thereby ensuring the stability of the blowing process.
  • this embodiment also provides a core making device, including a core box 200 and the above-mentioned air blowing hood 100, the core box 200 includes a first core box 210 and a second core box 220, the first core The box 210 and the second core box 220 are connected to form a molding cavity 230 inside the core box 200, the first core box 210 is provided with an air blowing hole 211 communicating with the molding cavity 230, and the air blowing port 11 communicates with the air blowing hole 211.
  • the first core box 210 can be understood as an upper core box 200
  • the second core box 220 can be understood as a lower core box 200.
  • a molding cavity 230 is formed inside the core box 200
  • a molding sand core 500 is configured.
  • the side of the air blowing hood 100 with the air blowing port 11 is covered on the first core box 210, and the catalytic gas is blown into the molding cavity 230 through the air blowing operation, thereby achieving the catalytic solidification of the sand core 500 .
  • the core making device further includes an air blowing assembly 300.
  • the air blowing assembly 300 includes an air blowing plate 310 and an air blowing rod 320 connected to the air blowing plate 310.
  • the air blowing rod 320 is vertically arranged with the air blowing plate 310, and
  • the blower plate 310 has a hollow channel.
  • the blower plate 310 is provided with an intake hole 311 communicating with the channel.
  • the end of the blower rod 320 away from the blower plate 310 is provided with an exhaust hole 321 communicating with the channel.
  • the blower rod 320 The end away from the blowing plate 310 is configured to extend into the blowing hole 211 and communicate with the molding cavity 230.
  • the air blowing plate 310 is a hollow plate member, which has a plurality of air inlet holes 311 on one side configured for air intake, and the other side is connected to the air blowing rod 320, and the catalytic gas enters the hollow plate through the air inlet holes 311 Then, it is discharged from the exhaust hole 321 of the blowing rod 320 through the pipe in the blowing rod 320.
  • the end of the blowing rod 320 extends into the blowing hole 211 of the first core box 210. Therefore, after the catalytic gas is discharged from the exhaust hole 321, it will directly enter the blowing hole 211 and finally enter the molding Cavity 230.
  • the core making device further includes a sealing plate 400 provided with a through hole configured to penetrate the blowing rod 320, and the sealing plate 400 is attached to the first core box 210 away from the second core box 220 On one side surface.
  • the sealing plate 400 is generally attached to the surface of the first core box 210 so that the through holes on the sealing plate 400 correspond to the blowing holes 211, so that the blowing rod 320 can be smoothly inserted through the through holes Inside the blow hole 211.
  • the sealing plate 400 can improve the sealing effect to a certain extent.
  • this embodiment also provides a blowing method, which is implemented by using the blowing hood 100 described above.
  • the blowing method includes:
  • the air is first blown into the conveying pipe 20 through the intake end 21, and then the air in the conveying pipe 20 is heated by the heating pipe 30, and then the catalytic liquid is blown into the conveying pipe 20 through the communication pipe 40 Inside, the heated liquid is used to heat and atomize the catalytic liquid to form a mixed gas of catalytic gas and air.
  • the mixed gas enters the second chamber 14 through the gas outlet 22, and then passes through the blowing plate 310, the blowing rod 320,
  • the air blowing hole 211 enters the molding cavity 230 to catalytically solidify the sand core 500 in the molding cavity 230.
  • the air blowing hood 100 of this embodiment integrates the heating element and the conveying pipe 20 into the same housing 10, so that after entering the conveying pipe 20, the air is heated by the heating element, and the heated air flows During the process, the catalytic liquid entering the conveying pipe 20 is heated and atomized, and finally a mixed gas of catalytic gas and air enters the second chamber 14 and finally enters the molding cavity 230 of the core box 200, which can be improved in this way.
  • the curing effect of the sand core 500 makes the blowing process more stable.
  • the core making device shown in FIG. 1 includes an air blowing hood 100 and a core box 200, the air blowing hood 100 is covered on the core box 200, the air blowing hood 100 includes a housing 10, and the housing 10 is passed through A plurality of heating tubes 30 are provided, and a second through hole 16 is also opened in the housing 10.
  • the core making device shown in FIG. 2 and FIG. 3 includes an air blowing hood 100, a core box 200, an air blowing assembly 300, a sealing plate 400 and a sand core 500.
  • the air blowing hood 100 includes a housing 10, a conveying pipe 20, a communication pipe 40, a partition plate 12, and a heating tube 30.
  • An air blowing port 11 is provided on one side of the housing 10, and the partition plate 12 is connected inside the housing 10.
  • the accommodating cavity in the housing 10 is divided into a first cavity 13 and a second cavity 14 communicating with the air blowing port 11, a delivery pipe 20 is provided in the first cavity 13, and one end of the delivery pipe 20 is provided with air intake End 21, the inlet end 21 is installed on the wall of the housing 10 through the second through hole 16 of the housing 10, the other end of the conveying pipe 20 is provided with an outlet end 22, the outlet end 22 passes through the third passage of the partition plate 12
  • the hole 121 is installed on the partition plate 12 so that the air outside the housing 10 can enter through the inlet end 21 of the delivery pipe 20 and finally enter the second chamber 14 through the outlet end 22 of the delivery pipe 20.
  • the inlet end 21 extends to the outlet end 22 meanderingly.
  • the heating pipe 30 is arranged around the conveying pipe 20 and is configured to heat the conveying pipe 20.
  • One end of the communication pipe 40 passes through the first through hole in the housing 10 15 is mounted on the housing 10, the other end of the communication pipe 40 is provided with a communication end 41, the communication end 41 passes through the conveying pipe 20 Communicating with delivery conduit 23 into the portion 20, such that the liquid catalyst outer housing 10 through the communicating pipe 40 can enter the pipeline 20.
  • the air heated by the heating tube 30 flows to the input portion 23, the catalytic liquid flowing into the input portion 23 is heated and atomized to form a mixed gas of catalytic gas and air, and the mixed gas enters the second chamber 14 through the outlet end 22 .
  • the core box 200 includes a first core box 210 and a second core box 220. After the first core box 210 and the second core box 220 are connected and fixed, a molding cavity 230 is formed inside.
  • the molding cavity 230 is configured to form a sand core 500, and the first core box 210 is provided with a blow hole 211 communicating with the molding cavity 230.
  • the blow assembly 300 includes a blow plate 310 and a blow rod 320.
  • the blow plate 310 is a hollow plate
  • the blow rod 320 is a hollow rod
  • one side of the blow plate 310 is provided with an air intake hole 311, and another One side is connected to the blowing rod 320 and the inside of the blowing plate 310 communicates with the inside of the blowing rod 320.
  • the blowing rod 320 is vertically arranged with the blowing plate 310.
  • the end of the blowing rod 320 away from the blowing plate 310 is provided with a row
  • the air hole 321, one end of the air blowing rod 320 with the air exhaust hole 321 is configured to extend into the air blowing hole 211 of the first core box 210, so that the catalytic gas entering through the air intake hole 311 can pass through the air blowing plate 310, the air blowing rod 320.
  • the exhaust hole 321 and the air blowing hole 211 enter the molding cavity 230.
  • the sealing plate 400 is provided on the side surface of the first core box 210 away from the second core box 220, and the sealing plate 400 is provided with a through hole corresponding to the air blowing hole 211 of the first core box 210, so that The air rod 320 can smoothly extend into the air blowing hole 211 through the perforation hole.
  • the sealing plate 400 can be placed on the first core box 210 first, so that the through holes on the sealing plate 400 correspond to the blowing holes 211 of the first core box 210, and then the blowing rod 320 can be extended through the through holes Into the air blowing hole 211, so that the air inlet hole 311 communicates with the molding cavity 230, and then the side of the air blowing hood 100 with the air blowing port 11 is covered on the first core box 210, so that the sealing plate 400 is located in the air blowing port 11,
  • the blowing hood 100 has the end of the sealing strip 50 pressed against the first core box 210.
  • FIG. 4 shows a blowing method, including:
  • the present disclosure provides an air blowing hood, a core making device and an air blowing method.
  • the air blowing hood can improve the curing effect of the sand core and make the air blowing process more stable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
PCT/CN2018/110370 2018-10-16 2018-10-16 吹气罩、制芯装置及吹气方法 WO2020077519A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2018/110370 WO2020077519A1 (zh) 2018-10-16 2018-10-16 吹气罩、制芯装置及吹气方法
DE112018002628.0T DE112018002628B4 (de) 2018-10-16 2018-10-16 Blashaube, Kernfertigungsvorrichtung und Begasungsverfahren
CN201880002466.1A CN111565868B (zh) 2018-10-16 2018-10-16 吹气罩、制芯装置及吹气方法

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PCT/CN2018/110370 WO2020077519A1 (zh) 2018-10-16 2018-10-16 吹气罩、制芯装置及吹气方法

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WO2020077519A1 true WO2020077519A1 (zh) 2020-04-23

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