Torpedo needle

Abstract

The invention discloses a torpedo needle, which comprises a slug umbrella head, a slug rod and a fixed cover; center of one end of the fixed cover is provided with a rubber port; center of the other end of the fixed cover is provided with a fixed cover inner cavity; the inner cavity of the fixed cover is communicated with a rubber port by an inner cavity hole; the slug umbrella head is provided with a charging chamber; the slug rod is equipped in the center part of the slug umbrella head; one end of the slug rod is a flat end and the other end is a tip end; the slug rod penetrates into the inner cavity of the fixed cover; the flat end is located in the inner cavity of the fixed cover; the flat end is matched with the inner cavity hole, thereby an appropriate flow of melt materials can enter the rubber port; the tip end penetrates the slug umbrella head and protrudes from the slug umbrella head; one side of the slug umbrella head tightly contacts the circumferential part of one side of the fixed cover inner cavity. The flat end structure of the slug rod can effectively limit flow of melt material, thereby reducing melted materials at the rubber port and cooling fully, and preventing salivating and wire drawing.

Description

technical field [0001] The invention relates to a torpedo needle used on a hot nozzle, which can effectively limit the flow of molten material and prevent wire drawing. Background technique [0002] The hot runner system is an important part of the injection mold production equipment. It uses the principle of heating and temperature control to keep the runner part of the mold in a molten state. With the development of the mold industry, the hot runner system is also increasingly developed. At present, the torpedo needle used on the hot nozzle in the hot runner system, such as figure 1 As shown, it includes a core umbrella head 1, a core rod 2 and a fixed cover 4; one end of the fixed cover 4 is provided with a glue mouth 5 at the center, and the glue mouth 5 is a tapered outward expansion shape; The center of the other end of the cover 4 is provided with a fixed cover cavity 6; the fixed cover cavity 6 communicates with the glue port 5 through the cavity hole 7; the core um...

AI Technical Summary

Problems solved by technology

The end of the core rod 2 close to the inner cavity hole is a pointed conical shape. This pointed structure cannot effectively limit the flow rate of the molten material at the inner cavity hole, resulting in more material at the glue mouth, which cannot be fully melted. Cooling high-temperature molten materials, causing salivation and drawing, affecting product quality

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