Small Gate Sprue Bushing

Small Gate Sprue Bushings

Sprue bushings with a small gate

Sprue bushings and intermediate tubes insulate the stalk tube both thermally and mechanically during low-pressure casting to ensure that the metal stays liquid.

DGMF Mold Clamps Co., Ltd is the mold clamps Manufacturer in China, also provide injection mold componentsdie press componentsmachine tools, fasteners for your best choice. Contact us for more details.

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Small Gate Sprue Bushing

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Description

What Is Small Gate Sprue Bushing?

Sprue bushings are hardened-steel mold components that accept an extrusion nozzle and provide the opening used to transfer molten plastic to the mold cavity.

In plastic injection molding, The sprue bushing is a metal part that links the mold with the injection machine.

A sprue bushing is made of hot working die steel SKD61 features the properties of heat/wear resistance.

To prevent leakage of plastic materials, the feed throat is usually designed into a chamfer R. The SR (spherical radius) of the mold sprue bushing should be 1 – 2mm larger than the sr of the injection nozzle.

The sprue bushing hole diameter (D) should be 0.5mm larger than the diameter (d) of the injection machine nozzle.

Three measures to shorten the main sprue bushing

  1. The sprue bushing of a 2-plate mold has to be submerged in the A plate (unless otherwise required by the client);
  2. The main sprue bushing of a 3-plate mold has to be longer than 25 (including 25). Large sprue bushing must be used.
  3. Employ a hot sprue bushing (hot runner) to manufacture products that have high requirements on appearance or other special requirements.

The small gate sprue bushing drawing

Small Water Sprue Bushing Small Gate Sprue Bushing drawing
Small Water Sprue Bushing Small Gate Sprue Bushing drawing

Φ120 Small Gate Sprue Bushing Features

  1. Applicable molding machine specifications: 450T-1000T, nozzle mechanical hole Φ120
  2. Applicable to small gate sprue bushing standard mold series
  3. The positioning ring and the filling small gate sprue bushing are guaranteed to be concentric, and the injection nozzle will never leak.
  4. Effectively reduce the length of the material head, reduce the cost of waste materials, and facilitate molding
  5. Adopt standardized design and manufacture, fast delivery, economical and practical
  6. The material used: chrome steel
  7. Can be customized according to the actual specifications of the mold and special requirements

Φ100 Small Gate Sprue Bushing Features

  1. Applicable molding machine specifications: 90T-450T, nozzle mechanical hole Φ100
  2. Applicable to standard mold base series of two-plate mold
  3. The positioning ring and the filling small gate sprue bushing are guaranteed to be concentric, and the injection nozzle will never leak.
  4. Effectively reduce the length of the material head, reduce the cost of waste materials, and facilitate molding
  5. Adopt standardized design and manufacture, fast delivery, economical and practical
  6. The material used: chrome steel
  7. Can be customized according to the actual specifications of the mold and special

 

DGMF Mold Clamps Co., Ltd supplies the ejector pins, straight ejector pins, ejector sleeve pins, ejector blades, shoulder ejector pinsguide pinscore pins, angle pins, dowel pins, guide bushing, A-type sprue bushingB-type sprue bushingC-type sprue bushing,  small gate sprue bushingbig gate sprue bushing, etc.

Contact the DGMF team for the injection mold components specification, inventory, pricing.

 

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