sprue bushing

[′sprü ‚bu̇sh·iŋ]

(engineering)

A steel insert in an injection mold which contains the sprue hole and has a seat for the injection cylinder nozzle.

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sprue puller

References in periodicals archive ?

Its function is to act as a thermal barrier between the hot nozzle and the relatively cool sprue bushing.

Thixomolding benefits parts makers; design tips for tooling makers

If the RTO is opposite the sprue bushing, the hex also functions as the all-important cold well to catch and retain any semi-solidified material residing in the machine nozzle tip.

PART 2: Tricks of the Trade on RTOs, RSOs

When switching from one injection unit to the other, the carriage is unlocked and manually moved to the side, aligning the desired injection unit with the sprue bushing. The first machines of this design were built for a rubber molder using the same mold to produce parts from two different rubber compounds.

Suppliers Showcase EQUIPMENT

"For example, in the back of a zinc die casting die is a bushing called the sprue bushing with a female radius on it.

Company reinvents itself with technology, innovation

RTOs are often located opposite a sprue bushing, but they are also commonly located at the intersection of a runner branch.

PART 1 OF 2: Tricks of the Trade on RTOs, RSOs

The assembly permits perfect radius alignment between the sprue bushing and nozzle tip while compensating for misalignment up to .040" overall travel in all directions.

EQUIPMENT

PCS was working with NXCMFG on mold components that utilize 3D printing, and one of the first developments to come from that partnership was a sprue bushing featuring a conformai cooling channel.

Conformal Cooling Helps Get Heat Out And Cycle Time Down: Conformally cooled sprue bushings help automotive molder reduce cycle times and injection pressures for a high-volume component

For example, does the nozzle tip mate properly with the sprue bushing? Is a temperature zone overriding?

Safety First: Know the Compatibility of Different Resins

There are pressure drops as the material passes through the restrictive machine nozzle tip, the sprue bushing, the runner, and the gates.

Clamp Pressure and Cavity Land Area: What you need to know to prevent flashing and mold damage

Checking the match between nozzle-tip radius and orifice to those of the mold's sprue bushing;

Nozzle Heaters & Thermocouples: A Case of Wiring Done Wrong: Incorrect placement of wires for these Components frustrates molders and costs them money to boot

This solidification is a result of heat being sucked out of the nozzle tip due to surface contact with the cold sprue bushing.

PART 2: How Sprue Pullers Help Prevent Molding Issues: A vital secondary function of sprue pullers is to act as a cold well to trap solidified material left in the machine-nozzle tip

* The condition of the sprue bushing and the machine nozzle tip;

Know the Basics of Sprue-Puller Design: PART 1

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