Mold core for manufacturing right-cylinder-shaped cavity inner wall protrusion structure and implementation method thereof

Abstract

The invention discloses a mold core for manufacturing a right-cylinder-shaped cavity inner wall protrusion structure. The mold core comprises a grid bar, staggered interlocking raised bars, grid bar matching structures, a sealing table, staggered interlocking grooves, a mold core middle structure, sealing steps and a positioning structure. The staggered interlocking raised bars are arranged on the grid bar, and the grid bar is further provided with grooves used for manufacturing the protrusion structure. The staggered interlocking grooves are formed in the corresponding grid bar matching structures, and are further matched with the staggered interlocking raised bars for use. The sealing table is arranged at the bottoms of the grid bar matching structures. By the adoption of the mold core, the protrusion structure of various shapes and position distributions can be manufactured on the right-cylinder-shaped cavity inner wall with any bottom edge contour; and the mold core is simple in structure, reasonable in design and capable of achieving batch and efficient production.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to a core for manufacturing a convex structure on the inner wall of a straight-column cavity and a realization method thereof. Background technique [0002] In the field of injection mold design, when it is necessary to form the convex structure on the inner wall of the straight column cavity, the following methods are widely used at present: forced demoulding or inclined roof, although they can all play a certain role, but each has its own limitations. different disadvantages. Forced demoulding requires materials with certain elasticity, and the precision is not high; the inclined roof is difficult to apply when the cavity structure is small. Generally speaking, neither of these two methods can directly form the convex structure on the inner wall of the straight column cavity; and the use of 3D printing technology will have disadvantages such as poor comprehensive mechanic...

AI Technical Summary

Problems solved by technology

Forced demoulding requires materials with certain elasticity to implement, and the precision is not high; the inclined roof is difficult to apply when the cavity structure is small

Generally speaking, neither of these two methods can directly form the convex structure on the inner wall of the straight column cavity; and the use of 3D printing technology will have disadvantages such as poor comprehensive mechanical properties, difficulty in mass production, and high cost.

[0003] In order to overcome the shortcomings caused by the above methods of processing the convex structure on the inner wall of the straight column cavity, patent 201620607160.7 proposes a new type of core: a core that can manufacture the convex structure on the inner wall of the cylindrical cavity to solve these problems , but this invention can only be aimed at the convex structure on the inner wall of the cylindrical cavity whose base contour is circular, but not for polygons such as triangles, quadrilaterals, ovals or even irregular curved straight column cavity inner walls. Fabricate the structure

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