Core-jacking device and core-making method for fine sand core
A core and sand core technology, which is applied in the direction of mold cores, manufacturing tools, casting molding equipment, etc., can solve the problems of small sand cores that cannot be ejected smoothly, design costs and production costs, and achieve high core ejection efficiency and sand core quality. Good, simple structure effect
Active Publication Date: 2016-02-24
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
[0006] The object of the present invention is to provide a core ejecting device and a core-making method for fine sand cores, so as to overcome the defects that the fine sand cores cannot be ejected smoothly and the design cost and production cost are high
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[0020] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0021] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0022] Such as figure 1 , 2 As shown, the core ejector device for fine sand cores according to the specific embodiment of the present invention includes a lower core ejector rod 3 , a lower core ejector plate 1 and a connecting piece 2 . The lower core rod 3 is installed in the lower core rod mounting hole at the bottom of the core box 4 . After the upper core box and the lower core box are molded together, a cavity of a...
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The invention discloses a device for ejecting a small sand core and a method for making the small sand core. The device comprises at least one lower core ejection rod and at least one lower core ejection plate, wherein the upper part of each lower core ejection rod is stretched into a lower core box; a boss is arranged at the top end of each lower core ejection rod; the bottom surface of each boss is flush with the bottom surface of a cavity of the lower core box; each lower core ejection plate is fixedly connected with the corresponding lower core ejection rod through a connecting piece. According to the device for ejecting the small sand core and the method for making the small sand core, the adverse effects such as scrapping of the small sand core caused by unbalance during the ejection of the small sand core due to large proportion of the horizontal size to the longitudinal size of the small sand core can be eliminated by stretching the bosses on the lower core ejection rods into the small sand core, so that the small sand core is steadily ejected and made. The device has the advantages of simple structure, flexibility in assembly and disassembly, high core ejection efficiency, good sand core quality, remarkable economic benefit and the like.
Description
technical field [0001] The invention relates to the field of casting, in particular to a core-throwing device and a core-making method for fine sand cores. Background technique [0002] Casting molds are an essential part of the casting process, and their main function is to manufacture sand cores for the production of product blanks. Casting molds are generally installed on a core shooting machine for use. The sand shooting and core ejection process is realized through the core shooting machine. The main structure of the core shooting machine includes an upper core box, a lower core box, a sand shooting system, and a core ejection system. [0003] The top core system is usually composed of a certain number of top core rods. The ejector core rod is generally installed on the core plate, and the core plate ejects the sand core in a certain order. The general order of the core ejector is: first, the lateral ejector core, followed by the upper ejector core, and finally the low...
Claims
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IPC IPC(8): B22C9/10B22C17/02
Inventor 张俊许振冲杨基吕登红谢永泽马国胜傅显珍
Owner GUANGXI YUCHAI MASCH CO LTD