Core fixing mechanism and mould

Abstract

The invention provides a core fixing mechanism. The core fixing mechanism comprises a pressing plate installed on a mould body; an assembly and disassembly through hole is formed in the pressing plate, and limit plugs are detachably installed in the assembly and disassembly through hole and can exert fixing force on cores; the diameter of the assembly and disassembly through hole is greater than that of each core, a plug through hole is formed in each limit plug and used for being provided with a cold water pipe connected with the corresponding core in a running-through mode. When a certain core needs to be replaced, the corresponding limit plug is disassembled fromm the assembly and disassembly through hole; because the diameter of the assembly and disassembly through hole is greater than that of each core, the corresponding core can be disassembled and taken out from the mould body through the assembly and disassembly through hole; then, a new core penetrates through the assembly and disassembly through hole and is assembled on the mould body; finally, the disassembled limit plug is assembled in the assembly and disassembly through hole to exert fixing force on the new core after replacement, and therefore the replacement of the cores is completed.

Description

technical field [0001] The invention relates to a mold, in particular to a core fixing mechanism and a mold. Background technique [0002] In the die-casting mold used to process the cylinder block of an automobile, 11 slender spot-cooled cores are usually installed on the fixed mold; and cooling water pipes are installed in each spot-cooled core to use cooling water to The core is cooled. All spot-cooled cores are embedded in the inserts of the fixed mold. At the same time, the rear ends of the 11 spot-cooled cores are respectively pressed against the same pressing plate through 11 core extensions, so that one pressing plate can be used to apply pressure to all the spot-cooling cores and fix all the spot-cooling cores on the insert middle. The fixing mechanism of this type of core has the following problems: when a certain spot-cooled core needs to be replaced due to structural reasons, it is necessary to remove the pressure plate from the mold first, and then remove the...

AI Technical Summary

Problems solved by technology

The fixing mechanism of this type of core has the following problems: when a certain spot-cooled core needs to be replaced due to structural reasons, it is necessary to remove the pressure plate from the mold first, and then remove the corresponding core extension to replace the corresponding A certain spot cooling core; and in order to remove the pressure plate, it is necessary to pull out all the cooling water pipes and their water pipe joints on the spot cooling core, so that the pressure plate can be removed smoothly; in this way, when pulling out all the cooling water pipes , it is easy to damage the sealing ring between other spot-cooled cores that do not need to be replaced and the corresponding cooling water pipe, and increase the workload and time of mold repair workers

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