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US 7,413,427 B1Granted
Ejection mechanism
AssigneeCheng Uei Precision Industry Co., Ltd.
InventorsChih-Yu Chen, Jian-Guang Huang, Yun-Qing He, Chun-Yan Wu
Life of this patent
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Abstract
The injection die has a mold plate that has a main arm, a compressed board serve to lock down the mold insert within the mold plate and an ejection mechanism. The ejection mechanism has a columned ejector pin with a stopping protruded from one end of the ejector pin, an elastic module installed in the main arm to abut against the ejector pin to provide an elastic force, and a fixed board received in the main arm to withstand one end of the elastic module.
Claims3
An ejection mechanism for ejecting a mold insert, comprising:
- a mold plate having a main arm with a holding passage which is defined in the front of the main arm, and with a holding groove which is defined at the back of the main arm, the mold insert loaded in the mold plate;
- a compressed board for positioning the mold insert in the mold plate;
- a columned ejector pin with a stopping protruded from one end of the ejector pin;
- an elastic module installed in the holding passage to abut against the ejector pin to provide an elastic force;
- and
- a fixed board received in the holding groove to withstand one end of the elastic module,
- wherein the mold plate has two branch arms extending from opposite sides of the main arm, and has a cavity which receives the mold insert that is formed between the main arm and the branch arms,
- wherein the fixed board has a partition and two traveling holes defined on the partition therethrough, the fixed board is secured to the holding groove with a plurality of screws through the traveling holes,
- wherein ejector pin is installed in the holding passage and passes through the holding passage to abut against the mold insert loaded in the mold plate.
6 more elements
Dependencies are inferred from the claim text.