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Hot runner water conveying sleeve used for making PET

A technology of hot runner and water jacket, applied in the field of hot runner, can solve the problems of insufficient cooling of hot runner valve needle and valve needle damage.

Inactive Publication Date: 2019-10-25
中山市富晟特热流道科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, it often occurs that the cooling of the hot runner valve needle is not timely enough, resulting in damage to the valve needle.

Method used

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  • Hot runner water conveying sleeve used for making PET

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Embodiment Construction

[0016] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] like figure 1 As shown, the present invention provides a hot runner water jacket for making PET, which is characterized in that it includes a peripheral portion 1 and a conical portion 2 extending from one end of the peripheral portion 1, and the inner cavity 3 is composed of the peripheral portion 1 and the conical portion. Part 2 is jointly defined and formed. The circumferential part 1 is provided with at least two water tanks 6 for cooling water to flow th...

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Abstract

The invention discloses a hot runner water conveying sleeve used for making PET. The hot runner water conveying sleeve comprises a circumference part and a conical part formed through extending from one end of the circumference part, an inner cavity is formed through joint limiting of the circumference part and the conical part, the circumferential part is provided with at least two water groovesused for allowing cooling water to flow through in the direction of the conical part, a sealing glue part is arranged on the circumference face of the side, away from the conical part, of the circumference part, and the length of the sealing glue part is 1.5 to 2 times of the diameter of the circumference part. Through the sleeve, due to the long sealing glue part, the heat conduction effective area is improved, the valve needle cooling efficiency is high, and a valve needle can be prevented from being damaged by high temperature.

Description

technical field [0001] The invention relates to the technical field of hot runners, in particular to a hot runner water delivery jacket, in particular to a hot runner water delivery jacket for making PET. Background technique [0002] Hot runner systems are used in injection molds to inject molten plastic particles into the cavity of the mold. The hot runner mold is a new structure that heats the runners and runners of the traditional mold or the three-plate mold, and does not need to take out the runners and runners during each forming. The hot runner is to keep the plastic in the runner and gate in a molten state by heating. Since there are heating rods and heating rings near or in the center of the runner, the entire runner from the nozzle outlet of the injection molding machine to the gate is in a high temperature state, so that the plastic in the runner keeps melting. Generally, it is not necessary to open the runner to take out the condensation When starting the mach...

Claims

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Application Information

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IPC IPC(8): B29C45/27
CPCB29C45/2737
Inventor 汪凤奎
Owner 中山市富晟特热流道科技有限公司