Core Box Design Checklist for a Core Shooting Machine

A core shooting machine can only perform as well as its core box. Even with sufficient shooting capacity and heating power, unsuitable tooling may cause incomplete filling, uneven density, difficult ejection, or core breakage. For foundries purchasing metal foundry equipment, the core box should be reviewed before the machine specifications are finalized. Core geometry, sand type, heating method, output, and removal method all affect the required configuration.

1. Confirm Core Size, Weight, and Output

Provide the finished core’s dimensions and weight—not only the casting dimensions. We use this information to check the required working space, shooting capacity, clamping, ejection method, and target output. If several core boxes will run on one machine, submit every planned core drawing. We will evaluate the largest box, heaviest core, highest sand demand, and most complex cycle.

2. Review Geometry and Box Orientation

Dimensioned drawings and 3D files should identify thin sections, deep pockets, long flow paths, tolerances, draft angles, and undercuts. These features affect filling, venting, opening, and removal. For hollow shell cores, specify the required rotation angle, heating sequence, sand discharge direction, collection method, and tooling clearance.

3. Check Shooting Gates and Vents

Gate number, size, and position must match the core geometry. Poor placement may cause incomplete filling, uneven density, or excessive cleaning work. Vents are commonly required at deep pockets, thin sections, and the ends of sand-flow paths. Before increasing shooting pressure, check whether restricted or poorly positioned vents are preventing complete filling. Review the nozzle layout, blow plate, sealing area, vent arrangement, and cleaning access.

4. Match the Tooling to the Heating Method

Specify LPG or electric heating before the core box is manufactured. The tooling must provide space for burners or heaters, thermocouples, insulation, and temperature controls. Confirm the operating temperature, heat-recovery time, sensor positions, and maintenance access. Large core boxes may require several monitoring points.

5. Define Slides, Ejection, and Removal

Undercuts and complex passages may require slides, loose pieces, or separate inserts. Define each component’s movement, travel, actuation method, and operating sequence.

Ejector pins should act on sections that can withstand the release force. State whether the core will be removed manually, transferred to a conveyor, placed on a support tray, or handled automatically.

6. Verify the Machine Interface

Before tooling approval, confirm:

⏺︎ Mounting pattern and locating points

⏺︎ Core box dimensions and weight

⏺︎ Blow plate, clamp, and ejector positions

⏺︎ Heating, sensor, air, gas, and electrical connections

⏺︎ Slide connections and maintenance clearance

Information Kao Kuen Industrial Needs for an Equipment Inquiry

When you contact Kao Kuen Industrial about a core shooting machine, please provide the following information:

⏺︎ Core drawings and 3D files

⏺︎ Core box drawings, if available

⏺︎ Core dimensions, weight, and number of cavities

⏺︎ Sand type and required output per hour or shift

⏺︎ Preferred heating method and available factory utilities

⏺︎ Shooting gate, venting, slide, and ejection concepts

⏺︎ Core removal method and expected changeover frequency

⏺︎ Safety and documentation requirements for the destination country

We review the complete operating cycle, including core box closing, sand shooting, heating, rotation, opening, ejection, and transfer. As a manufacturer of metal foundry equipment, Kao Kuen Industrial uses your actual core data and production requirements to determine the appropriate shooting unit, heating arrangement, rotation mechanism, ejection system, and handling features.