Combined knockout core structural investment pattern die bundling core
A core-pulling structure and combined technology, which is applied in the direction of cores, molds, and mold components, can solve problems that affect the consistency of shape, size and size of casting products, easy slag inclusion, and low efficiency.
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[0020] refer to Figure 1 to Figure 7 , a combined core-pulling structure investment mold cluster core of the present invention includes a positioning mandrel 1, a pumping flap 2, a flap 3, a clamp 4, and an end seat 7, wherein: the The positioning mandrel 1 is in the core divided by the "well" shape, located at the center of the core axis, the section is a rectangular petal strip, and each of the four surface centers is provided with a raised guide rail 6 along the axial direction. There is a fixed blind screw hole in the center of the end of the strip; the pumping flap 2 is a core divided by a "well" shape, located on the four sides of the positioning mandrel 1, and has three cutting surfaces and a flap The center of the contact surface with the positioning mandrel 1 is provided with a recessed guide groove 5 along the axis direction, and the center of the tail end of the flap is provided with a fixed blind screw hole; Among the divided cores, the flaps with two cutting sur...
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