Process for machining annular water paths at elbow-row position of plastic die

Abstract

The invention discloses a process for machining annular water paths at an elbow-row position of a plastic die. The machining process comprises the following steps of: A, machining the upper body and the lower body of the elbow-row position by using a conventional process, wherein the upper body refers to a part above the section of the vertical middle position of the elbow-row position, and the lower body refers to a remained part after removing the upper body; and the faces of the upper face and the lower body at a cutting position are welding faces; B, respectively machining the annular water paths at corresponding positions of the welding faces of the upper body and the lower body by using the conventional process; C, aligning the upper body and the lower body of the elbow-row position, adhering the welding faces together, and machining a positioning thread hole on the elbow-row position by using the conventional process; D, respectively machining a water inlet and a water outlet on the elbow-row position by using the conventional process; E, cleaning, removing dust and removing an oxidation film; F, aligning the upper body and the lower body; G, welding the upper body and the lower body; and H, machining after forming. The annular water path machined by the process can control the temperature of the plastic die within a reasonable range, so that the temperature of the plastic die is not too high; and the forming period is shortened.

Description

【Technical field】 [0001] The invention relates to a processing technology of an elbow row position waterway, in particular to a processing technology of an elbow row position annular waterway of a plastic mold. 【Background technique】 [0002] With the rapid development and application of plastic industry and material technology, more and more parts in automobiles are replaced by plastic materials, such as: automobile oil pipe elbow, because its size is relatively small, the plastic material is PA6+30%GF, The required mold temperature is about 90 degrees, and the cooling water channel is small, so it is required to have a reasonable cooling water channel in the mold. According to the cooling water design of the conventional mold, the row position of this small elbow adopts a straight line water channel, such as figure 1 As shown: Elbow 1 is matched with elbow position 2, and there is a straight line waterway 3 in elbow position 2, so that there is no cooling water channel at ...

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Problems solved by technology

[0002] With the rapid development and application of plastic industry and material technology, more and more parts in automobiles are replaced by plastic materials, such as: automobile oil pipe elbow, because its size is relatively small, the plastic material is PA6+30%GF, The required mold temperature is about 90 degrees, and the cooling water channel is small, so it is required to have a reasonable cooling water channel in the mold. According to the cooling water design of the conventional mold, the row position of this small elbow adopts a straight line water channel, such as figure 1 As shown: Elbow 1 is matched with elbow position 2, and there is a straight line waterway 3 in elbow position 2, so that there is no cooling water channel at the front end of elbow position 2, which will cause the temperature of elbow position 2 to be too high. It cannot be cooled sufficiently, the plastic mold molding cycle is long (up to 45 seconds), and the injection molding production cost of the product is high; therefore, people have been trying to design and process a curved circulating waterway in the elbow position to make the elbow position There is a uniform and sufficient cooling effect, so as to improve the production efficiency of the mold

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