WO2016095179A1 - 一种射芯机的可控射砂机构及射砂方法 - Google Patents

一种射芯机的可控射砂机构及射砂方法 Download PDF

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Publication number
WO2016095179A1
WO2016095179A1 PCT/CN2014/094282 CN2014094282W WO2016095179A1 WO 2016095179 A1 WO2016095179 A1 WO 2016095179A1 CN 2014094282 W CN2014094282 W CN 2014094282W WO 2016095179 A1 WO2016095179 A1 WO 2016095179A1
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WIPO (PCT)
Prior art keywords
sand
valve
sand shooting
storage bag
shooting
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PCT/CN2014/094282
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English (en)
French (fr)
Inventor
王鼎铭
顾海兵
徐磊磊
王直良
Original Assignee
苏州明志科技有限公司
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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/CN2014/094282 priority Critical patent/WO2016095179A1/zh
Priority to DE112014005849.1T priority patent/DE112014005849T5/de
Publication of WO2016095179A1 publication Critical patent/WO2016095179A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
    • B22C15/245—Blowing tubes

Definitions

  • the present invention relates to a controllable sand shooting mechanism for a core shooting machine, and a controllable sand shooting method for a core making machine.
  • the principle of sand shooting of the core shooter is to compress the molding sand from the sanding head device through the die shot plate into the core box shape by compressed air.
  • the general sand shooting mechanism mainly consists of a gas storage bag, an intake valve, and a sandblasting machine.
  • the valve is composed of an intake valve to control the constant pressure inside the air bag of the external plant (ie, the sanding pressure of the core shooter), and the sand injection valve controls the air outlet of the air bag to slam and close, completing the sand shooting process.
  • the conventional conventional sand shooting valve adopts a two-position two-way control valve, and only has two states of snoring and closing.
  • the sand shooting mode is single, the sand shooting valve starts to hit the sand, and the set sanding time is closed, the sanding valve is closed, and the sand core is produced on a core shooting machine.
  • the sand pressure and the sand control process control resulting in a single phenomenon of sand shooting mode.
  • only the sand pressure can be adjusted by adjusting the sand pressure and the sanding time to match the various sand cores. In actual use and testing As a result, the adjustment of the sand blasting has no effect on the sand blasting effect, and it is impossible to optimize the sand blasting effect by extending the sand blasting.
  • the first problem is: In the production of complex sand core defects, the problem of false projections is only possible, and only the sand core can be improved to obtain a qualified sand core, but the first shot pressure is increased, and the first is easy to cause the wear of the mold.
  • the use of long molds requires manual repair of the mold.
  • the second is easy to block the mold vent plug, which makes the next shot blasting effect worse, and increases the frequency of cleaning the vent plug, which affects the core making efficiency.
  • the third is easy to sand the surface of the mold cavity, increasing the amount of manual cleaning work;
  • the second problem is: improving the sand injection pressure can not achieve the production of complex sand cores. It can only be produced according to the development of a special core shot machine for such complex sand cores, and the generality of the sand shooting mechanism is poor;
  • the third problem is: the production of small sand core, medium sand core, and large sand core on a core shooting machine, that is, the core core of different specifications is produced according to the core making ability of the core shooting machine, due to the limitation of the sand shooting mode, It is not possible to produce a qualified core.
  • the object of the present invention is to provide a controllable sand shooting mechanism of a core shooter, which can match sand cores of different specifications to provide a sand shooting method, improve the sand shooting effect, and is suitable for the production of complex sand cores, and improve the shooting.
  • the versatility of the core machine is to provide a controllable sand shooting mechanism of a core shooter, which can match sand cores of different specifications to provide a sand shooting method, improve the sand shooting effect, and is suitable for the production of complex sand cores, and improve the shooting.
  • a controllable sand shooting mechanism of a core shooting machine comprising a gas storage bag, an intake valve, a sand shooting valve device, and a sanding head device
  • the air storage bag is connected to the compressed air source via an intake valve
  • the sand shooting valve device comprises a first sanding valve and a second sand shooting valve arranged in parallel, the gas storage bag passing through the first intake valve and the second
  • An intake valve is connected to the sanding head device, wherein the first shot valve is a two-position two-way valve having a diameter in the range of DN25 to DN100, and the second shot valve has a maximum diameter in the range of DN25 to DN100.
  • Adjustable valve inside wherein the first shot valve is a two-position two-way valve having a diameter in the range of DN25 to DN100, and the second shot valve has a maximum diameter in the range of DN25 to DN100.
  • the air storage bag is provided with an intake passage that communicates with the compressed air source, and the intake valve is disposed on the intake passage.
  • the air bag is provided with an air outlet passage that communicates with the sanding head device, and the two-position two-way valve and the adjustable valve are disposed in parallel on the air outlet channel.
  • the air storage bag is provided with a first air outlet passage and a second air outlet passage that are arranged in parallel and communicate with the sanding head device, and the two-position two-way valve is disposed at the first air outlet.
  • the adjustable valve is disposed on the second outlet passage.
  • the intake valve is a pressure control valve.
  • the air storage bag is provided with a pressure monitoring switch, and the pressure monitoring is electrically connected to the intake valve.
  • the present invention also provides another technical solution: a controllable sand shooting method of a core shooting machine, using the controllable sand shooting mechanism as described above for sand shooting, wherein the intake valve is set by controlling the intake valve
  • the pressure of the gas in the gas storage bag adjusts the pressure of the gas entering the sanding head device by controlling the sand shooting valve device, and the control method of the sand shooting valve device is as follows:
  • the volume of the core to be cored is less than 1/2 L, the two-way two-way valve is closed, and the adjustable valve is opened.
  • the diameter of the adjustable valve is controlled to be 1 /4 ⁇ 1/2 of the maximum diameter, the high-pressure gas in the gas storage bag is blown into the core box by the small flow rate, so that the The molding sand is slowly enriched; then, after 1/4 to 1/2 shot ⁇ between the shot blasting chambers, the diameter of the adjustable valve is controlled to be at the maximum diameter, so that the high pressure gas in the gas storage bag passes.
  • a large flow rate blows the molding sand in the sanding head device into the core box to make the molding sand fast and firm;
  • the volume of the core to be cored is greater than or equal to 1/2 L and less than 1 L.
  • the two-way two-way valve is closed, the adjustable valve is opened, and the adjustable valve is controlled.
  • the diameter is at a maximum diameter of 1/4 to 1/2, so that the high-pressure gas in the gas storage bag blows the molding sand in the sanding head device into the core box by a small flow rate, so that the molding sand is slowly enriched.
  • the volume of the core to be cored is greater than or equal to 1 L, and the two two-way valve and the adjustable valve are smashed to control the diameter of the adjustable valve at the maximum diameter.
  • the high-pressure gas in the gas storage bag blows the molding sand in the sanding head device into the core box by means of a large flow rate, so that the molding sand is quickly filled and compacted
  • the present invention has the following advantages over the prior art:
  • the invention adopts a controllable sand shooting mechanism and a controllable sand shooting method, so that a better sand shooting effect can be obtained, and in principle, the sand is slowly enriched in the early stage of the sand shooting process, and the sand shooting process is carried out later. Tight, especially suitable for complex sand cores and thin wall sand cores;
  • the invention adopts a controllable sand shooting mechanism and a controllable sand shooting method, and a plurality of sand shooting modes can be matched with different sand core types, thereby improving the versatility of the sand shooting mechanism and being applicable to various sand cores.
  • the invention adopts a controllable sand shooting mechanism and a controllable sand shooting method, and the complex sand core can reduce the sand shooting pressure, reduce the mold loss, reduce the mold sanding condition, and reduce the exhaust plug cleaning artificial day.
  • FIG. 1 is a front view of a controllable sand shooting mechanism of the present invention
  • FIG. 2 is a top plan view of a controllable sand shooting mechanism of the present invention.
  • a controllable sand shooting mechanism of a core shooter includes a gas storage bag 1, an intake valve 2, a first shot valve 3, and a second shot.
  • the sand valve 4 and the sanding head device 5 the air storage bag 1 is provided with an intake passage 11 that communicates with a compressed air source, the intake valve 2 is disposed on the intake passage 11, and the air storage bag 1 is provided to be connected through the sand shooting passage 6.
  • the shot blasting valve 3 is a two-position two-way valve having a diameter of DN100
  • the second shot blasting valve 4 is an adjustable valve having a maximum diameter of DN100.
  • the intake valve 2 is a pressure control valve, and when the pressure in the air reservoir 1 reaches the set value ⁇ , the intake valve 2 is closed.
  • controllable sand shooting method of the core shooting machine which adopts the above-mentioned controllable sand shooting mechanism for sand shooting, wherein the pressure of the gas entering the air storage bag 1 is set by controlling the intake valve 2, By controlling the first shot valve 3 and the second shot valve 4 to regulate the pressure of the gas entering the head device 5, the above-described shot valve device is controlled as follows:
  • the volume of the core to be cored is less than 1/2 L, the first shot valve 3 is closed, and the second shot valve 4 is opened. First, the diameter of the second shot valve 4 is controlled. DN25, the high-pressure gas in the gas storage bag 1 is blown into the core box by a small flow rate, so that the molding sand is slowly enriched; then, 1/4 ⁇ 1 is passed between the sand shooting chambers.
  • the volume of the core to be cored is greater than or equal to 1/2 L and less than 1 L.
  • the first shot valve 3 is closed, the second shot valve 4 is opened, and the second shot valve 4 is controlled.
  • the diameter of the DN25 is such that the high-pressure gas in the gas storage bag 1 blows the molding sand in the sanding head device 5 into the core box by a small flow rate, so that the molding sand is slowly enriched; then, after passing through the sand shooting chamber 1 /4 ⁇ 1/2 shot sand ⁇ , control the second shot valve 4 diameter DN100, and hit the first shot valve 3, so that the high pressure gas in the air bag 1 will pass the large flow rate Sand head The molding sand placed in 5 is blown into the core box to make the molding sand fast and firm;
  • the volume of the core to be cored is greater than or equal to 1 L, and the first shot valve 3 and the second shot valve 4 are smashed, and the diameter of the second shot valve 4 is controlled to be DN100.
  • the molding sand in the sanding head device 5 is blown into the core box by the high-pressure gas in the gas storage bag 1 by a large flow rate, so that the molding sand is quickly filled and compacted.
  • the rest is the same as the first embodiment, except that the air storage bag is provided with a first air outlet passage and a second air outlet passage which are arranged in parallel and communicate with the sand shooting cylinder, and the two-position two-way valve is disposed on The adjustable valve is disposed on the second air outlet passage on the first air outlet passage.
  • the rest is the same as the first embodiment, except that the air storage bag is provided with a pressure monitoring switch, and the above-mentioned pressure monitoring is electrically connected or gas-connected to the intake valve, and the pressure monitoring is monitored.
  • the pressure in the air bag reaches the set pressure value ⁇ , and the above intake valve is closed.
  • the volume of the core to be cored is less than 1/2 L ⁇ , the first shot valve is closed, and the second shot valve is closed.
  • the diameter of the second shot valve is controlled to be DN35, so that The high-pressure gas in the gas storage bag blows the molding sand in the sand-blasting device into the core box by a small flow rate, so that the molding sand is slowly enriched; then, after the blasting, the 1/4 ⁇ 1/2 shot ⁇ Between the two, the diameter of the second shot blasting valve is controlled to be DN100, so that the high-pressure gas in the air-storage bag blows the molding sand in the sand-blasting head device into the core box by means of a large flow rate, so that the molding sand is fast and firm;
  • the volume of the core to be cored is greater than or equal to 1/2 L and less than 1 L.
  • the first shot valve is closed, the second shot valve is closed, and the diameter of the second shot valve is controlled.
  • the high-pressure gas in the gas storage bag is blown into the core box by means of a small flow rate, so that the molding sand is slowly enriched; then, 1/4 ⁇ 1 is passed between the sand shooting chambers.
  • the volume of the core to be cored is greater than or equal to 1L, and the first shot valve and the second shot valve are controlled, and the diameter of the second shot valve is controlled to be DN100, so that the gas is stored.
  • the high pressure gas in the bag will pass through a large flow rate.
  • the molding sand in the sanding device of the sanding cylinder is blown into the core box, so that the molding sand is quickly filled and compacted.
  • the volume of the core to be cored is less than 1/2 L ⁇ , the first shot valve is closed, and the second shot valve is closed.
  • the diameter of the second shot valve is controlled to be DN50, so that The high-pressure gas in the gas storage bag blows the molding sand in the sand-blasting device into the core box by a small flow rate, so that the molding sand is slowly enriched; then, after the blasting, the 1/4 ⁇ 1/2 shot ⁇ Between the two, the diameter of the second shot blasting valve is controlled to be DN100, so that the high-pressure gas in the air-storage bag blows the molding sand in the blasting head device into the core box by means of a large flow rate, so that the molding sand is fast and firm;
  • the volume of the core to be cored is greater than or equal to 1/2 L and less than 1 L.
  • the first shot valve is closed, the second shot valve is closed, and the diameter of the second shot valve is controlled.
  • the high-pressure gas in the gas storage bag is blown into the core box by means of a small flow rate to blow the molding sand into the core box, and then the molding sand is slowly filled; then, after the shot blasting, 1/4 ⁇ 1/ 2 shot sand ⁇ ⁇ , control the second shot sand valve diameter DN100, and hit the second shot sand valve, so that the high pressure gas in the gas storage bag through the large flow way to blow sand in the sand head device In the core box, the molding sand is fast and firm;
  • the volume of the core to be cored is greater than or equal to 1L, and the first shot valve and the second shot valve are controlled, and the diameter of the second shot valve is controlled to be DN100, so that the gas is stored.
  • the high-pressure gas in the bag blows the molding sand in the sanding head device into the core box by means of a large flow rate, so that the molding sand is quickly filled and compacted.

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  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Abstract

一种射芯机的可控射砂机构，包括压缩气源、进气阀(2)、储气包(1)、射砂阀装置以及射砂头装置(5)，储气包(1)经进气阀(2)连接压缩气源，射砂阀装置包括并联设置的第一射砂阀(3)和第二射砂阀(4)，储气包(1)经第一进气阀和第二进气阀连接射砂头装置(5)，第一射砂阀(3)为通径在DN25～DN100范围内的两位两通阀门，第二射砂阀为最大通径在DN25～DN100范围内的可调阀门，上述可控射砂机构可匹配不同规格的砂芯来提供射砂方式，提高射砂效果，适用于复杂砂芯的生产，提高射芯机的通用性，还公开了一种采用上述可控射砂机构的可控射砂方法。

Description

说明书 发明名称：一种射芯机的可控射砂机构及射砂方法 技术领域
[0001] 本发明涉及一种射芯机的可控射砂机构， 以及一种制芯机的可控射砂方法。
背景技术
[0002] 射芯机的射砂造型原理是通过压缩空气将型砂从射砂头装置中经过模具射板填 充入芯盒造型， 目前一般射砂机构主要由储气包、 进气阀、 射砂阀组成， 进气 阀控制外部厂房进气在气包内部恒压 （即射芯机的射砂压力） ， 射砂阀控制气 包出气口打幵及关闭， 完成射砂过程。
[0003] 现有常规射砂阀采用两位两通控制阀， 只有打幵及关闭两个状态。 射砂模式单 一， 射砂阀打幵射砂幵始， 达到设定的射砂吋间吋射砂阀关闭， 完成射砂， 在 一台射芯机上生产不同砂芯吋， 只能通过调整射砂压力及射砂吋间进行工艺控 制， 造成射砂模式单一的现象， 在射砂工艺控制上只能通过调整射砂压力及射 砂吋间来匹配各类砂芯， 在实际的使用及测试结果上看， 射砂吋间的调整对于 射砂效果的基本没有影响， 延长射砂吋间也无法优化射砂效果。
技术问题
[0004] 上述射砂模式单一的现象题给制芯带来以下的问题：
[0005] 问题一是： 在生产复杂砂芯吋， 出现射不实的问题吋， 就只能够提高射砂压力 制得合格的砂芯， 但射砂压力加大后第一容易造成模具的磨损， 长吋间使用需 要人工修补模具， 第二容易使模具排气塞堵掉， 使得下次射砂效果更差， 并增 加清理排气塞频次， 影响制芯效率。 第三容易使模具型腔表面粘砂， 增加人工 清理工作量；
[0006] 问题二是： 提高射砂压力也无法实现复杂砂芯的生产， 只能根据此类复杂砂芯 研发专用射芯机进行生产， 射砂机构通用性差；
[0007] 问题三是： 在一台射芯机上生产小型砂芯、 中等砂芯、 大型砂芯， 即按射芯机 的制芯能力分别生产不同规格的砂芯， 由于射砂模式限制， 可能无法均制出合 格的砂芯。 问题的解决方案
技术解决方案
[0008] 本发明的发明目的是提供一种射芯机的可控射砂机构， 可匹配不同规格的砂芯 来提供射砂方式， 提高射砂效果， 适用于复杂砂芯的生产， 提高射芯机的通用 性。
[0009] 为达到上述发明目的， 本发明采用的技术方案是： 一种射芯机的可控射砂机构 ， 包括储气包、 进气阀、 射砂阀装置以及射砂头装置， 所述储气包经进气阀连 接压缩气源， 所述射砂阀装置包括并联设置的第一射砂阀和第二射砂阀， 所述 储气包经所述第一进气阀和第二进气阀连接所述射砂头装置， 所述第一射砂阀 为通径在 DN25〜DN100范围内的两位两通阀门， 所述第二射砂阀为最大通径在 DN25〜DN100范围内的可调阀门。
[0010] 上述技术方案中， 所述储气包设置有连通所述压缩气源的进气通道， 所述进气 阀设置于所述进气通道上。
[0011] 上述技术方案中， 所述储气包设置有连通所述射砂头装置的出气通道， 所述两 位两通阀门和所述可调阀门并联设置于所述出气通道上。
[0012] 上述技术方案中， 所述储气包设置有并联设置并且连通所述射砂头装置的第一 出气通道和第二出气通道， 所述两位两通阀门设置于所述第一出气通道上， 所 述可调阀门设置于所述第二出气通道上。
[0013] 上述技术方案中， 所述进气阀为压力控制阀。
[0014] 上述技术方案中， 所述储气包设置有压力监测幵关， 所述压力监测幵关电连接 所述进气阀。
[0015] 本发明还提供另外一个技术方案： 一种射芯机的可控射砂方法， 采用如上所述 的可控射砂机构进行射砂， 其中， 通过控制所述进气阀设定进入所述储气包中 的气体的压力， 通过控制所述射砂阀装置调节进入所述射砂头装置中的气体的 压力， 所述射砂阀装置的控制方式如下：
[0016] (1) 待制芯的砂芯的体积小于 1/2L吋， 关闭所述两位两通阀门， 打幵所述可 调阀门， 首先， 控制所述可调阀门的通径在 1/4〜1/2最大通径， 使所述储气包内 的高压气体通过小流量的方式将所述射砂头装置中的型砂吹入芯盒中， 使所述 型砂慢速充实； 然后在射砂吋间经过 1/4〜1/2射砂吋间吋， 控制所述可调阀门的 通径在最大通径， 使所述储气包内的高压气体通过大流量的方式将所述射砂头 装置中的型砂吹入芯盒中， 使所述型砂快速紧实；
[0017] (2) 待制芯的砂芯的体积大于等于 1/2L并且小于 1L吋， 首先， 关闭所述两位 两通阀门， 打幵所述可调阀门， 控制所述可调阀门的通径在 1/4〜1/2最大通径， 使所述储气包内的高压气体通过小流量的方式将射砂头装置中的型砂吹入芯盒 中， 使所述型砂慢速充实； 然后， 在射砂吋间经过 1/4〜1/2射砂吋间吋， 控制所 述可调阀门的通径在最大通径， 并打幵所述两位两通阀门， 使所述储气包中的 高压气体通过大流量的方式将所述射砂头装置中的型砂吹入芯盒中， 使所述型 砂快速紧实；
[0018] (3) 待制芯的砂芯的体积大于等于 1L吋， 同吋打幵所述两位两通阀门和可调 阀门， 控制所述可调阀门的通径在最大通径， 使所述储气包内的高压气体通过 大流量的方式将射砂头装置中的型砂吹入芯盒中， 使所述型砂快速充实并紧实
发明的有益效果
有益效果
[0019] 由于上述技术方案运用， 本发明与现有技术相比具有下列优点：
[0020] (1) 本发明采用可控射砂机构及可控射砂方法， 可获得更佳的射砂效果， 从 原理上在射砂过程前期实现型砂慢速充实， 射砂过程后期再进行紧实， 特别适 合复杂砂芯及薄壁类砂芯；
[0021] (2) 本发明采用可控射砂机构及可控射砂方法， 多种射砂模式可配套不同砂 芯类型， 提高射砂机构的通用性， 适用于各类砂芯。
[0022] (3) 本发明采用可控射砂机构及可控射砂方法， 对于复杂砂芯可降低射砂压 力， 减少模具损耗， 减少模具粘砂情况， 减少排气塞清理人工吋间。
对附图的简要说明
附图说明
[0023] 图 1为本发明公幵的可控射砂机构的主视图；
[0024] 图 2为本发明公幵的可控射砂机构的俯视图。 [0025] 其中， 1、 储气包； 11、 进气通道； 12、 第一出气通道； 13、 第二出气通道； 2 、 进气阀； 3、 第一射砂阀； 4、 第二射砂阀； 5、 射砂头装置； 6、 射砂通道。 本发明的实施方式
[0026] [0008]下面结合附图及实施例对本发明作进一步描述：
[0027] 实施例一
[0028] 参见图 1和图 2， 如其中的图例所示， 一种射芯机的可控射砂机构， 包括储气包 1、 进气阀 2、 第一射砂阀 3、 第二射砂阀 4以及射砂头装置 5， 储气包 1设置有连 通压缩气源的进气通道 11， 进气阀 2设置于进气通道 11上， 储气包 1设置有通过 射砂通道 6连通射砂头装置 5的第一出气通道 12和第二出气通道 13， 第一射砂阀 3 设置于第一出气通道 12上， 第二射砂阀 4设置于第二出气通道 13上， 第一射砂阀 3为通径 DN100的两位两通阀门， 第二射砂阀 4为最大通径 DN100的可调阀门。
[0029] 进气阀 2为压力控制阀， 当储气包 1内的压力达到设定值吋， 进气阀 2关闭。
[0030] 下面介绍一种射芯机的可控射砂方法， 采用如上的可控射砂机构进行射砂， 其 中， 通过控制进气阀 2设定进入储气包 1中的气体的压力， 通过控制第一射砂阀 3 和第二射砂阀 4调节进入射砂头装置 5中的气体的压力， 上述射砂阀装置的控制 方式如下：
[0031] (1) 待制芯的砂芯的体积小于 1/2L吋， 关闭第一射砂阀 3， 打幵第二射砂阀 4 ， 首先， 控制第二射砂阀 4的通径在 DN25 , 使储气包 1内的高压气体通过小流量 的方式将射砂头装置 5中的型砂吹入芯盒中， 使型砂慢速充实； 然后， 在射砂吋 间经过 1/4〜1/2射砂吋间吋， 控制第二射砂阀 4的通径为 DN100, 使储气包 3内的 高压气体通过大流量的方式将射砂头装置 5中的型砂吹入芯盒中， 使型砂快速紧 实；
[0032] (2) 待制芯的砂芯的体积大于等于 1/2L并且小于 1L吋， 首先， 关闭第一射砂 阀 3， 打幵第二射砂阀 4， 控制第二射砂阀 4的通径在 DN25 , 使储气包 1内的高压 气体通过小流量的方式将射砂头装置 5中的型砂吹入芯盒中， 使型砂慢速充实； 然后， 在射砂吋间经过 1/4〜1/2射砂吋间吋， 控制第二射砂阀 4的通径为 DN100 ， 并打幵第一射砂阀 3， 使储气包 1中的高压气体通过大流量的方式将射砂头装 置 5中的型砂吹入芯盒中， 使型砂快速紧实；
[0033] (3) 待制芯的砂芯的体积大于等于 1L吋， 同吋打幵第一射砂阀 3和第二射砂阀 4， 控制第二射砂阀 4的通径在 DN100, 使储气包 1内的高压气体通过大流量的方 式将射砂头装置 5中的型砂吹入芯盒中， 使型砂快速充实并紧实。
[0034] 实施例二
[0035] 其余与所述实施例一相同， 不同之处在于， 上述储气包设置有并联设置并且连 通上述射砂筒的第一出气通道和第二出气通道， 上述两位两通阀门设置于上述 第一出气通道上， 上述可调阀门设置于上述第二出气通道上。
[0036] 实施例三
[0037] 其余与所述实施例一相同， 不同之处在于， 上述储气包设置有压力监测幵关， 上述压力监测幵关电连接或气连接上述进气阀， 当压力监测幵关监测到储气包 中的压力达到设定压力值吋， 上述进气阀关闭。
[0038] 实施例四
[0039] 其余与所述实施例一至三任一相同， 不同之处在于， 上述射砂阀装置的控制方 式如下：
[0040] (1) 待制芯的砂芯的体积小于 1/2L吋， 关闭第一射砂阀， 打幵第二射砂阀， 首先， 控制第二射砂阀的通径在 DN35， 使储气包内的高压气体通过小流量的方 式将射砂头装置中的型砂吹入芯盒中， 使型砂慢速充实； 然后， 在射砂吋间经 过 1/4〜1/2射砂吋间吋， 控制第二射砂阀的通径为 DN100, 使储气包内的高压气 体通过大流量的方式将射砂筒头装置中的型砂吹入芯盒中， 使型砂快速紧实；
[0041] (2) 待制芯的砂芯的体积大于等于 1/2L并且小于 1L吋， 首先， 关闭第一射砂 阀， 打幵第二射砂阀， 控制第二射砂阀的通径在 DN35， 使储气包内的高压气体 通过小流量的方式将射砂筒头装置中的型砂吹入芯盒中， 使型砂慢速充实； 然 后， 在射砂吋间经过 1/4〜1/2射砂吋间吋， 控制第二射砂阀的通径为 DN100, 并 打幵第二射砂阀， 使储气包中的高压气体通过大流量的方式将射砂筒头装置中 的型砂吹入芯盒中， 使型砂快速紧实；
[0042] (3) 待制芯的砂芯的体积大于等于 1L吋， 同吋打幵第一射砂阀和第二射砂阀 ， 控制第二射砂阀的通径在 DN100, 使储气包内的高压气体通过大流量的方式将 射砂筒砂头装置中的型砂吹入芯盒中， 使型砂快速充实并紧实。
[0043] 实施例五
[0044] 其余与所述实施例一至三任一相同， 不同之处在于， 上述射砂阀装置的控制方 式如下：
[0045] (1) 待制芯的砂芯的体积小于 1/2L吋， 关闭第一射砂阀， 打幵第二射砂阀， 首先， 控制第二射砂阀的通径在 DN50， 使储气包内的高压气体通过小流量的方 式将射砂头装置中的型砂吹入芯盒中， 使型砂慢速充实； 然后， 在射砂吋间经 过 1/4〜1/2射砂吋间吋， 控制第二射砂阀的通径为 DN100, 使储气包内的高压气 体通过大流量的方式将射砂头装置中的型砂吹入芯盒中， 使型砂快速紧实；
[0046] (2) 待制芯的砂芯的体积大于等于 1/2L并且小于 1L吋， 首先， 关闭第一射砂 阀， 打幵第二射砂阀， 控制第二射砂阀的通径在 DN50， 使储气包内的高压气体 通过小流量的方式将射砂头装置中的型砂吹入芯盒中， 使型砂慢速充实； 然后 ， 在射砂吋间经过 1/4〜1/2射砂吋间吋， 控制第二射砂阀的通径为 DN100, 并打 幵第二射砂阀， 使储气包中的高压气体通过大流量的方式将射砂头装置中的型 砂吹入芯盒中， 使型砂快速紧实；
[0047] (3) 待制芯的砂芯的体积大于等于 1L吋， 同吋打幵第一射砂阀和第二射砂阀 ， 控制第二射砂阀的通径在 DN100, 使储气包内的高压气体通过大流量的方式将 射砂头装置中的型砂吹入芯盒中， 使型砂快速充实并紧实。

Claims

权利要求书
一种射芯机的可控射砂机构， 包括储气包、 进气阀、 射砂阀装置 以及射砂头装置， 所述储气包经进气阀连接压缩气源， 其特征在 于， 所述射砂阀装置包括并联设置的第一射砂阀和第二射砂阀， 所述储气包经所述第一进气阀和第二进气阀连接所述射砂头装置 ， 所述第一射砂阀为通径在 DN25〜DN100范围内的两位两通阀门 ， 所述第二射砂阀为最大通径在 DN25〜DN100范围内的可调阀门
根据权利要求 1所述的可控射砂机构， 其特征在于， 所述储气包设 置有连通所述压缩气源的进气通道， 所述进气阀设置于所述进气 通道上。
根据权利要求 1所述的可控射砂机构， 其特征在于， 所述储气包设 置有连通所述射砂头装置的出气通道， 所述两位两通阀门和所述 可调阀门并联设置于所述出气通道上。
根据权利要求 1所述的可控射砂机构， 其特征在于， 所述储气包设 置有并联设置并且连通所述射砂头装置的第一出气通道和第二出 气通道， 所述两位两通阀门设置于所述第一出气通道上， 所述可 调阀门设置于所述第二出气通道上。
根据权利要求 1所述的可控射砂机构， 其特征在于， 所述进气阀为 压力控制阀。
根据权利要求 1所述的可控射砂机构， 其特征在于， 所述储气包设 置有压力监测幵关， 所述压力监测幵关电连接或气连接所述进气 阀。
一种射芯机的可控射砂方法， 采用如权利要求 1-6任一所述的可控 射砂机构进行射砂， 其中， 通过控制所述进气阀设定进入所述储 气包中的气体的压力， 其特征在于， 通过控制所述射砂阀装置调 节进入所述射砂头装置中的气体的压力， 所述射砂阀装置的控制 方式如下： (1) 待制芯的砂芯的体积小于 1/2L吋， 关闭所述两位两通阀门， 打幵所述可调阀门， 首先， 控制所述可调阀门的通径在 1/4〜1/2最 大通径， 使所述储气包内的高压气体通过小流量的方式将所述射 砂头装置中的型砂吹入芯盒中， 使所述型砂慢速充实； 然后,在射 砂吋间经过 1/4〜1/2射砂吋间吋， 控制所述可调阀门的通径在最大 通径， 使所述储气包内的高压气体通过大流量的方式将所述射砂 头装置中的型砂吹入芯盒中， 使所述型砂快速紧实；
(2) 待制芯的砂芯的体积大于等于 1/2L并且小于 1L吋， 首先， 关 闭所述两位两通阀门， 打幵所述可调阀门， 控制所述可调阀门的 通径在 1/4〜 1/2最大通径， 使所述储气包内的高压气体通过小流量 的方式将射砂头装置中的型砂吹入芯盒中， 使所述型砂慢速充实
； 然后， 在射砂吋间经过 1/4〜1/2射砂吋间吋， 控制所述可调阀门 的通径在最大通径， 并打幵所述两位两通阀门， 使所述储气包中 的高压气体通过大流量的方式将所述射砂头装置中的型砂吹入芯 盒中， 使所述型砂快速紧实；
(3) 待制芯的砂芯的体积大于等于 1L吋， 同吋打幵所述两位两通 阀门和可调阀门， 控制所述可调阀门的通径在最大通径， 使所述 储气包内的高压气体通过大流量的方式将射砂头装置中的型砂吹 入芯盒中， 使所述型砂快速充实并紧实。
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