High-efficiency radiating double-pipe water-cooling pouring gate sleeve with temperature detection function

Abstract

The invention discloses a high-efficiency radiating double-pipe water-cooling pouring gate sleeve with a temperature detection function. An outer pipe (3) is arranged outside a pouring gate sleeve (1); a cavity of which the two ends are sealed is formed between the pipe wall of the outer pipe (3) and the pipe wall of the pouring gate sleeve (1); a water outlet baffle (6) is arranged at a water outlet (5); the water outlet baffle (6) is arranged in the cavity between the outer pipe (3) and the pouring gate sleeve (1); a distance is reserved between the bottom surface of the water outlet baffle (6) and the bottom surface of the outer pipe (3); a valve (9) is arranged at a water inlet (4); flaky radiating fins (10) are arranged on the lower part of the pouring gate sleeve (1); a temperature sensor (11) is arranged at the lower end of the outer pipe (3). The radiating efficiency is improved by the radiating fins; the temperature sensor detects the temperature of cooling water at the lower end of the pouring gate sleeve (1) in real time; a valve at the water outlet is adjusted, the flow speed of the cooling water is adjusted to a best value; the radiating efficiency is improved; the circulation volume of the cooling water is saved.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a high-efficiency heat dissipation double-pipe water-cooled sprue sleeve with temperature detection. Background technique [0002] The sprue sleeve injects the molten plastic material from the nozzle of the injection molding machine into the mold, and is used to connect the molding mold and the metal fittings of the injection molding machine. Since the molten plastic material flows through the sprue sleeve, heat is transferred to the sprue sleeve, and the pouring The sprue sleeve is continuously heated, and the sprue sleeve is prone to overheating and cracking, which affects the service life of the sprue sleeve; in the prior art, cooling grooves are arranged on the outer surface of the sprue sleeve to prevent sprue sleeve from overheating and cracking. [0003] For example, patent 203449552 discloses a mold sprue bushing. By setting a number of cooling grooves on the outer surface...

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Problems solved by technology

[0003] For example, patent 203449552 discloses a mold sprue bushing. By setting a number of cooling grooves on the outer surface of the sprue bushing, the heat dissipation effect of the sprue bushing is increased and the service life of the sprue bushing is prolonged. However, only through the sprue bushing The surface itself dissipates heat, the heat dissipation speed is slow, and the heat dissipation effect is poor

[0004] Patent 203495175 discloses a new type of sprue bushing structure for high-pressure casting molds. In the present invention, a plurality of bosses arranged from top to bottom are arranged on the outer wall of the sprue bushing, so that a cooling system for cooling water circulation is formed between the bosses. The water channel, by injecting cooling water into the water-separating jacket, ensures that the cooling water circulates in the same direction, and reduces the temperature of the sprue bushing through the cooling water. However, the cooling water of this structure is arranged in a spiral shape around the sprue bushing In the water-separating jacket of the pipe wall, the contact area between the sprue sleeve and the cooling water is limited, and the radius of the water-separating jacket is small, which is easy to block the water-separating jacket and requires high cooling water

[0005] In the prior art, when the sprue sleeve is cooled by water, if the water temperature is too cold, when the sprue sleeve encounters supercooled cooling water, the sprue sleeve is prone to cracking due to sudden cold, if the cooling water temperature is too high , the effect of cooling cannot be achieved. In the prior art, there is no sprue sleeve with cooling water temperature detection. If the cooling water temperature is detected and the cooling water flow is adjusted accordingly, the cooling water temperature is then adjusted. It can not only protect the sprue sleeve, but also save cooling water circulation

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