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Advantages and disadvantages of different types of sprue in injection mold
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Advantages and disadvantages of different types of sprue in injection mold

Views: 1     Author: Site Editor     Publish Time: 2022-11-07      Origin: Site

Advantages and disadvantages of different types of sprue in injection mold

There are many types of injection mold gates, which need to be selected according to the different shapes, appearance, cavity number and quality of injection products. In short, the gate has a great influence on the quality of injection products. The following will be based on our many years of injection mold experience to explain to you, let you understand how to choose different types of injection mold gate.


1. Straight gate (non-restricted gate)


Advantages: Good fluidity, simple structure, can be used for all kinds of resins, for large molding products, deep hole molding products injection mold


Disadvantages: single cavity; Gate separation difficulty; Long cycle time; High residual stress


2. Side gate


Advantages: Low residual stress, easy to determine gate width, depth, easy to achieve gate balance, the most simple structure.


Disadvantages: flow resistance, gate separation marks conspicuous.

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3. Overlapping sprue


Advantages: not easy to see gate marks, easy to suppress jet marks, suitable for the appearance of the parts of the injection mold


Disadvantages: Difficulty in gate separation


4. Sheet sprue


Advantages: small residual stress, easy to suppress jet marks, to prevent flow marks near the gate has a certain effect.


Disadvantages: Must be processed after cutting


5. Fan gate


Advantages: wide flow, small alignment, good fluidity, suitable for large flat molding products injection mold


Disadvantages: Must be processed after cutting


6. Film gate


Advantages: wide flow, small alignment, good fluidity, suitable for large flat molding products injection mold


Disadvantages: Must be processed after cutting

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7. Disk sprue


Advantages: Good for disc shape, suitable for disc shape, cylindrical molding products injection mold


Disadvantages: after cutting must be processed, cut off the required number of hours is higher


8. Point gate


Advantages: Good plasticity, the gate can be separated by itself, the gate trace is small, suitable for one mold multi cavity or 3 plate injection mold


Disadvantages: the flow resistance is large, the mold structure is complex, the flow channel loss is large


9. Tunnel gate


Advantages: Good plasticity, gate self-separation, gate traces are small, can reduce the cost of gate cutting


Disadvantages: large flow resistance, uneven gate separation quality


The injection mold gate is the entrance of the resin injection cavity, which specifically refers to a short short flow channel connecting the shunt and the cavity. The mission of Fansstar is to master the core technology of injection molding production, communicate and analyze the technology before mold production with customers from the production needs of finished products, so that the mold delivery time is short, the service life is long, the rapid mass production and the finished product quality is excellent! Have the need of injection mold welcome to contact us!


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