A pneumatic injection molding machine
An injection molding machine and air pressure technology, which is applied in the field of injection molding of semiconductor workpieces, can solve problems such as deepening, affecting the sealing effect, and crack expansion, and achieves the effects of ensuring stability, preventing damage to the sealing film, and preventing excessive deformation due to force
Active Publication Date: 2022-08-02
大同机械科技(江苏)有限公司
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Problems solved by technology
[0004] However, the air pressure of the pneumatic injection molding machine is generated by the air flow. When the pre-cured sheet cracks, the air flow will enter the crack, making the crack expand and deepen, thus affecting the final sealing effect.
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[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0035] The purpose of the pneumatic injection molding machine of the present invention is to overcome the problems of poor injection sealing effect, complex structure and high cost in the prior art.
[0036] figure 1 It is a sectional view of the pneumatic injection molding machine provided by the present invention. like figure 1 As shown, the main structure of the pneumatic injection molding machine is a separable structure of the ...
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The present invention provides a pneumatic injection molding machine, which includes an upper casing and a lower casing that can be tightly sealed, wherein the lower casing is provided with a sealing film. The design of the upper and lower shells can facilitate the loading of the components to be packaged and the semi-cured resin, and the upper and lower shells are snap-sealed to form a sealed cavity to ensure a dust-free environment for injection molding and sealing, thereby ensuring the reliability of the seal; the sealing film is used to carry the semi-cured The resin sheet can realize the pre-alignment of the components to be packaged, and the elastic material of the sealing film can ensure the stability of the airflow when the prepreg resin sheet is pressed onto the components to be packaged, and prevent the airflow from directly contacting the prepreg resin sheet. Parts of the resin sheet are overstressed, resulting in cracks, which in turn create sealing voids.
Description
technical field [0001] The invention relates to the field of injection molding and packaging of semiconductor workpieces, in particular to a pneumatic injection molding machine. Background technique [0002] The injection molding process is a common technical means to seal and protect the packaged components by using sealing materials such as resin and plastic. reliability. [0003] The existing injection molding process is often realized by an injection molding machine, and the injection molding machine can include a hot-press injection molding machine and a pneumatic injection molding machine. Among them, the hot-press injection molding machine uses the pressure head to apply pressure to the sealing material and heat and cure it to realize the injection molding of the components to be packaged, while the air pressure injection molding machine first places the pre-cured sheet in the position to be packaged, and uses air pressure to pre-process the components. The pressing...
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IPC IPC(8): B29C43/18B29C43/10B29C43/34
CPCB29C43/18B29C43/10B29C43/34B29C2043/181
Inventor 吴依贫邓朝群
Owner 大同机械科技(江苏)有限公司