CN1131592A - 铸模制造设备 - Google Patents
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Abstract
一种用于制造铸模的具有较小机械刚度和强度的设备包括可在型砂装入区和制模区之间移动的用于支撑模板的工作台、用于垂直移动工作台的气缸、在其下部有一个开口的闭合罩,该开口与砂箱的一个上开口连通,闭合罩具有一个阶梯结构部分、至少一个与闭合罩上部连通的供气管、与供气管连通用来引入外界气流的气阀、与一个真空源连通的开口和悬置在闭合罩内能垂直移动的压板,该压板能被气密地插入闭合罩的小的下部。
Description
本发明涉及一种通过对装入到由模板确定的制模区的型砂进行挤压来制造铸模的设备,它具有一个模板和一个安装在该模板上的型箱。
通常所使用的几种铸模制造方法均是通过一个压板对装入到由模板和砂箱所确定的制模空间的型砂进行压实,例如,日本专利公开第60—6246号揭示了一种压实型砂的方法,其中压板就刚好设置并暂时固定在充满型砂的砂箱之上,将高压气流施加到压板顶部直到压力达到一个预定值,而后释放被固定的压板,借此快速降下压板以压实型砂。
但是,由于施加的是高压气流,因此执行这种方法的制模设备需要几十吨的夹紧力来固定砂箱的和模板。这样,该设备必须具有较大的刚度和强度从而该设备是重型的。这是一种缺陷。
本发明克服了这一缺陷。其目的在于提供一种具有较小刚度和较小强度的型砂压实设备。
为实现本发明的目的,该设备包括一个可在型砂装入区和制模区之间移动的用于支撑其上安装有砂箱的模板的工作台、一个用于垂直移动工作台的气缸、一个在其下部有一个开口的闭合罩,该开口与砂箱的一个上开口连通,该闭合罩具有一个阶梯结构部分,使得其下部的横截面积小于其上部的横截面积、至少一个与该闭合罩的上部连通的供气管、一个与该供气管连通的用来把外界空气引入该供气管的气阀、一个在该闭合罩的上侧部形成的与一个真空源连通的开口、和一个悬置在该闭合罩内能垂直移动的压板,并且该压板能被气密地插入到闭合罩的小的下部中。
在上述结构的本发明中,由于型砂首先是利用大气压力与真空之间的压力差而机械压实的,因此该设备不需要高压并且机构的刚度和强度可以较低。
图1是本发明设备的一个实施例在装入型砂之后的局部横断面示意图;
图2是本实施例在其闭合空间尚未形成时的局部横断面示意图;
图3是本实施例在其闭合空间刚刚形成时的局部横断面示意图;
图4是本实施例在其闭合空间被压板分成上和下两部分时的局部横断面示意图;
图5是用于本实施例的供气管和气阀的平面示意图;
图6是图5的供气管和气阀的示意放大剖视图;
图7是另一种实施例的供气管和气阀的示意放大平面图;
图8是图7的供气管和气阀的示意放大剖视图。
现在将参照附图对本发明的实施例作详细的阐述。在图1中,一组立柱2,2被安装在机座1上。一个气流头和压板组件3被固定地安装在立柱2,2的顶部。此外,一对水平延伸的导轨4,4(图中见到的只有一条轨道,从左向右延伸)被安装在立柱2,2的顶部和机座1之间中间部位的立柱上。一个气缸5被安装在该导轨上,其一端固定在导轨上并由其支撑。该气缸5在其另一端有一个活塞杆6。该活塞杆与一个工作台7相连使得它也可以与该工作台脱开。该工作台7有一个空腔。用于垂直地移动该工作台的装置即气缸9被安装在工作台7的底板8上,这样它延伸到工作台7的空腔中。一个板10被固定地安装在气缸9的朝下导引的活塞杆上。其上具有模型11的模板12被安置在工作台7的上部,且一个型箱13和一个填充框13a被放在模板12之上。模版12、型箱13和填充框13a确定了一个制模区,型砂就被装入到该制模区内。由一组气缸7a,7a提升的一对导轨15,15和一对导轮16,16被布置在型箱13的外边。该导轨15,15通过一个连接件7b与填充框13a相连。
图2是图1所示设备的侧视图,其中,一个顶板17被固定在立柱2,2的顶部。一个闭合罩18固定在该顶板17上。该闭合罩18在其下端有一个与型箱13或填充框13a的上开口相对应的开口。该闭合罩还具有一个阶梯结构部分,使得其上部的横截面积大于其下部的横截面积。
此外,一个朝下导引的气缸20和一个导柱21被安装在闭合罩18的平顶19的中部。一个压板23既固定在气缸20的活塞杆22的下端又固定在导销21的下端,这样周围配有密封件23a的压板23能气密地插入到闭合罩18的小的下部中,以垂直运动。为确保压板23能快速地向下移动,给气缸20加装了一个安全阀20a,同时给导销21加装一个对置的限位开关杆21a和限位开关21b,以测定导销21的垂直位置。
再有,在环形孔28b内(见图5)配置了一个或多个供气管28,且在供气管28之上配置了一个环形气阀29。如在图5和6中清楚所见,该气阀29包括一个可在该阀29的内壁表面上滑动的活塞30,并且通过该活塞30的下部空间31,它将供气管28打开,以与外界空气连通。通过一个电磁阀33,该活塞30的上部空间32与一个真空源27连通。此外,在闭合罩18下端和机座1的中间布置一个带式输送器34,用来卸下型箱。
现在将描述上述设备的运行。在图1中,首先通过任何已知的装置(未示出)将型砂14输送给设置在模板12上的型箱13和填充框13a。然后使支撑模板12、型箱13和填充框13a的工作台7向右移动,直到它到达在气流头和压板组件3之下的制模区。图2是该设备在工作台7停到组件下方时的侧视图。
在图3中,垂直移动工作台的气缸9,将型箱13和填充框13a升起,直到填充框架13a触到闭合罩18的底部以借此确定一个闭合空间。在工作台升起之前,它与活塞杆6脱开。然后开启电磁阀26,并且通过真空源27把闭合空间内的空气、包括存在于型砂14中的空气排空。当闭合空间达到一个预先确定的真空度时,使电磁阀26关闭。电磁阀33开启以排空在活塞30的上部空间32中的空气,向上移动活塞30,并且从活塞30的下部空间31迅速地把外界气流导入到闭合空间中,由此使得外界气流从型砂14的表面穿过型砂到达模板12,以初步压实型砂。在型砂初步压实之后,关闭电磁阀33,以降下活塞30从而关闭供气管。然后,重新开启电磁阀26,以排空闭合空间内的空气。当达到一个预先确定的直空度时,使电磁阀26关闭,而电磁阀34开启以降下压板23。当配备有密封件23a的压板23刚好进入闭合罩18的小的下部18a时(见图4),由限位开关杆21a启动限位开关21b,并且一个来自开启的限位开关21b的信号触发电磁阀33。这样,活塞30再次上升,通过活塞31的下部和供气管28迅速地把外界空气引入闭合空间。在压板23上方和下方的空气之间的压力差使得压板23迅速地压向型砂的上表面,因此以高速冲击型砂14并将其压实。在这一过程中,安全阀20a用来排空气缸20中的空气以防止其内压力升高,以便不妨碍压板23的快速向下的运动。
当压板23中止向下移动时,电磁阀33闭合,让压板23重新回到其初始位置。然后,垂直移动工作台的气缸9下降,把填充框13a与闭合罩18分开,并且让气缸9致动,以保持在导轮16,16的水平上,与输送器34处于同一水平,同时降下工作台,由导轮16,16支撑型箱13,以便把填充框13a与砂箱分开,并且把型箱13以及制好的铸模输送到输送器34上。
由于压板23上方的外界空气压力和在其下方的真空之间的压力差很大,由于压板的自身重量及这种压力差,由于在下落的压板下方没有空气,因此没有任何空气阻力能阻止压板的下落,并且由于在下落的压板下方没有空气,因此,它不会受到只有在其下存有空气时才会产生的由压板压缩空气而形成的向上的力,从而又快又好地把型砂14压实。
虽然在上述实施例中是用空气气缸把可垂直移动的压板悬置在闭合罩中的,但其它的装置,例如电动气缸或其它机械支承装置,也是可以使用的。
此外,当供气管28是环形的,如在本实施例中,则导入到闭合空间的外界空气就不会受压板23的影响,这样便完成了对型砂的适当和初步的压实。就是说,当供气管28如在图5和6中所示的那样为环形时,则空气可被引入到闭合罩18和压板23之间而不会遭遇到大的阻力,如在图3中所见到的那样。此外,可以用一组布置在周围的环形管28,28代替单个的供气管28,如图7所示。
在型砂上表面与压板23的底面之间的距离(即压板下落的高度)至少为30mm,且最好为100mm到150mm。为实现这一距离,压板23的底面必须高于闭合罩18的下端30mm。
如果该下落距离小于30mm,则压板下落的速度就会很慢,这就导致较弱的机械压实。实验显示,如果该下落距离大于150mm,则在初步压实过程中,压板的速度增加率便变得较小,由此导致制模能力的下降,并且制出的铸模压实不足。对这种情况来说压板的下落速度的方程式如下:
压板的下落速度=\2×(F/m+1)×9.8×h,其中
F是在压板上方和下方的空气之间的压力差,
m是压板的质量,和
h是压板的下落高度。
此外,压板23的单位重量必须大于30g/cm2,且最好是100—200g/cm2。这一数值相对于压板的下落高度是最佳值。
综上所述可清楚地看出,由于本发明的设备使用的是外界压力与真空之间的压力差,因此它的刚度和强度可以较低。另外,由于本设备是在一个没有空气的腔室中压实型砂,因此压板不会受到向上的力。这些对工艺来说均是显著的优点。
Claims (5)
1.一种用于制造铸模的设备,它包括:
一个可在型砂装入区和制模区之间移动的用于支撑其上安装有砂箱(13)的模板(12)的工作台(7);
一个用于垂直移动工作台的气缸(9);
一个在其下部有一个开口的闭合罩(18),该开口与砂箱的一个上开口连通,该闭合罩具有一个阶梯结构部分,使得其下部的横截面积小于其上部的横截面积;
至少一个用于与该闭合罩的上部连通的供气管(28);
一个用于与该供气管连通的用来把外界气流引入到该供气管中的气阀(29);
一个形成于该闭合罩的上侧部的用于与一个真空源(27)连通的开口(24);和
一个悬置在该闭合罩内能垂直移动的压板(23),这样该压板能被气密地插入到闭合罩的小的下部中。
2.根据权利要求1的设备,其特征在于:所说气阀(29)是环形的。
3.根据权利要求1的设备,其特征在于:所说气阀包括一组布置在周围的开孔。
4.根据权利要求1的设备,其特征在于:在压板的底面和闭合罩之间的间隔大于30mm。
5.根据权利要求1的设备,其特征在于:压板的单位重量大于30g/cm2。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP331483/94 | 1994-12-09 | ||
JP33148394A JP3164271B2 (ja) | 1994-12-09 | 1994-12-09 | 鋳型造型装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1131592A true CN1131592A (zh) | 1996-09-25 |
CN1046444C CN1046444C (zh) | 1999-11-17 |
Family
ID=18244156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN95121626A Expired - Fee Related CN1046444C (zh) | 1994-12-09 | 1995-12-08 | 铸模制造设备 |
Country Status (9)
Country | Link |
---|---|
US (1) | US5695000A (zh) |
EP (1) | EP0720878B1 (zh) |
JP (1) | JP3164271B2 (zh) |
KR (1) | KR960021261A (zh) |
CN (1) | CN1046444C (zh) |
DE (1) | DE69509866T2 (zh) |
MY (1) | MY130329A (zh) |
SG (1) | SG46161A1 (zh) |
TW (1) | TW283102B (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101242922B (zh) * | 2005-08-10 | 2011-04-06 | 新东工业株式会社 | 上下铸型的造型方法及造型装置 |
CN101700563B (zh) * | 2009-10-28 | 2011-09-07 | 邢现军 | 铸造沙模造型机 |
CN104907507A (zh) * | 2015-05-18 | 2015-09-16 | 安庆旭东工贸有限责任公司 | 一种造型机 |
CN107052267A (zh) * | 2016-12-25 | 2017-08-18 | 重庆市永川区泰兴机械厂 | 模具成型机构 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2131433B1 (es) * | 1996-01-18 | 2000-03-01 | Loramendi Sa | Dispositivo de alta compactacion para maquinas de moldeo de cajas de arena por impacto de aire. |
WO1998045070A1 (es) * | 1997-04-08 | 1998-10-15 | Loramendi, S.A. | Dispositivo de alta compactacion para maquinas de moldeo de cajas de arena por impacto de aire |
BR0105928A (pt) * | 2000-04-12 | 2002-02-26 | Sintokogio Ltd | Sistema de monitoração para aparelho de moldagem e sistema de monitoração para aparelho de fluxo de ar e moldagem sob pressão |
KR100893642B1 (ko) * | 2001-08-06 | 2009-04-17 | 신토고교 가부시키가이샤 | 주형 조형기를 모니터링하는 방법 및 시스템 |
JP6396876B2 (ja) * | 2015-11-06 | 2018-09-26 | トヨタ自動車株式会社 | 混練砂の充填方法及び充填装置 |
CN105499515B (zh) * | 2015-12-10 | 2017-12-26 | 重庆慧团商贸有限公司 | 真空紧实装置 |
CN105436425A (zh) * | 2015-12-15 | 2016-03-30 | 湖南红宇耐磨新材料股份有限公司 | 砂型造型装置及砂型造型方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1192790B (de) * | 1964-07-14 | 1965-05-13 | Wagner & Co Alfelder Masch | Zwei-Stationen-Pressformmaschine |
DE2844464C2 (de) * | 1978-10-12 | 1983-03-24 | Bühler, Eugen, Dipl.-Ing., 8871 Burtenbach | Verfahren und Vorrichtung zum Verdichten von Gießformen |
JPS55120450A (en) * | 1979-03-08 | 1980-09-16 | Sintokogio Ltd | Mold molding apparatus |
JPS57139447A (en) * | 1981-02-20 | 1982-08-28 | Sintokogio Ltd | Method and device for molding mold |
JPS58107251A (ja) * | 1981-12-21 | 1983-06-25 | Sintokogio Ltd | 鋳型造型装置 |
DE3238712A1 (de) * | 1982-10-19 | 1984-04-19 | Heinrich Wagner Maschinenfabrik GmbH & Co, 5928 Laasphe | Vorrichtung zum verdichten von formmasse in einer form, insbesondere in einer giessereiform |
DE3319030A1 (de) * | 1983-05-26 | 1984-11-29 | BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe | Vorrichtung zum verdichten von giessereiformsand im gasdruckverfahren |
JPH0620588B2 (ja) * | 1989-12-28 | 1994-03-23 | 株式会社コーヨー | 衝撃型造型装置 |
DE4023180C1 (en) * | 1990-07-20 | 1992-03-12 | Heinrich Wagner Sinto Maschinenfabrik Gmbh, 5928 Bad Laasphe, De | Press forming machine - has venting opening in hood enclosing pressure plate, filling frame and moulded, to prevent air ingress |
AU644702B2 (en) * | 1990-12-14 | 1993-12-16 | Sintokogio Ltd. | Compressed air blowing apparatus for use in green sand mold molding facility |
JPH0615410A (ja) * | 1992-03-27 | 1994-01-25 | Kanamori Shintou Kk | 鋳型造型装置 |
CZ238894A3 (en) * | 1993-10-29 | 1995-08-16 | Fischer Georg Giessereianlagen | Device for compacting grained moulding materials |
-
1994
- 1994-12-09 JP JP33148394A patent/JP3164271B2/ja not_active Expired - Fee Related
-
1995
- 1995-12-07 TW TW084113029A patent/TW283102B/zh active
- 1995-12-08 DE DE69509866T patent/DE69509866T2/de not_active Expired - Fee Related
- 1995-12-08 EP EP95119384A patent/EP0720878B1/en not_active Expired - Lifetime
- 1995-12-08 US US08/569,726 patent/US5695000A/en not_active Expired - Fee Related
- 1995-12-08 CN CN95121626A patent/CN1046444C/zh not_active Expired - Fee Related
- 1995-12-08 MY MYPI95003792A patent/MY130329A/en unknown
- 1995-12-08 SG SG1995002074A patent/SG46161A1/en unknown
- 1995-12-09 KR KR1019950048557A patent/KR960021261A/ko not_active Application Discontinuation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101242922B (zh) * | 2005-08-10 | 2011-04-06 | 新东工业株式会社 | 上下铸型的造型方法及造型装置 |
CN101700563B (zh) * | 2009-10-28 | 2011-09-07 | 邢现军 | 铸造沙模造型机 |
CN104907507A (zh) * | 2015-05-18 | 2015-09-16 | 安庆旭东工贸有限责任公司 | 一种造型机 |
CN104907507B (zh) * | 2015-05-18 | 2017-03-15 | 青岛橡胶谷知识产权有限公司 | 一种造型机 |
CN107052267A (zh) * | 2016-12-25 | 2017-08-18 | 重庆市永川区泰兴机械厂 | 模具成型机构 |
Also Published As
Publication number | Publication date |
---|---|
CN1046444C (zh) | 1999-11-17 |
EP0720878A1 (en) | 1996-07-10 |
US5695000A (en) | 1997-12-09 |
TW283102B (zh) | 1996-08-11 |
JP3164271B2 (ja) | 2001-05-08 |
KR960021261A (ko) | 1996-07-18 |
DE69509866T2 (de) | 2000-01-13 |
EP0720878B1 (en) | 1999-05-26 |
SG46161A1 (en) | 1998-02-20 |
MY130329A (en) | 2007-06-29 |
DE69509866D1 (de) | 1999-07-01 |
JPH08164445A (ja) | 1996-06-25 |
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