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A method and device for adjusting flow channel balance of one-mold multi-cavity mold

A multi-cavity and multi-cavity technology for one mold, applied in the field of adjusting the flow path balance of a multi-cavity mold, can solve the problems of reducing the service life of the mold, poor accuracy, mold deformation, etc., and achieve high accuracy and abstract problems The effect of embodiment

Active Publication Date: 2017-04-19
合兴集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the runners are unbalanced, the following problems may occur: the holding time is prolonged, the product molding cycle is increased, and the production efficiency is reduced; some cavities are not filled, and other cavities have been overfilled (over-holding pressure), causing the product to appear Flashing; over-holding pressure leads to uneven internal stress of the product, resulting in easy deformation of the product and unstable appearance dimensions; uneven cavity pressure increases the clamping force, deforms the mold, and reduces the service life of the mold
specifically, figure 1 It shows a one-mold eight-cavity mold for manufacturing circuit breaker housings, the mold cavities are numbered F1-F8, and the shapes of the eight mold cavities are not exactly the same, specifically, four of the mold cavities (F1, F2, F7, F8) is used to make the lower half of the shell, and the other 4 cavities (F3, F4, F5, F6) are used to make the upper half of the shell, firstly use the above mold to make 8 short shots when making a judgment After the product is finished, the difference in the volume of each short-shot product is artificially observed, and the flow channel balance difference is judged based on experience and the flow rate is adjusted. six chambers, thirty-two chambers), such methods are not supported by factual data, and the judgment results may be one-sided and controversial, resulting in unobjective analysis results. It can be seen that this kind of judgment method consumes a lot of manpower. Less efficient and less accurate

Method used

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  • A method and device for adjusting flow channel balance of one-mold multi-cavity mold
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  • A method and device for adjusting flow channel balance of one-mold multi-cavity mold

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Embodiment Construction

[0030] This embodiment provides a method for adjusting the runner balance of a multi-cavity mold. Before executing this method, first use the same parameters (including flow rate, throttle valve opening, etc.) figure 1 Inject the raw material into the 8 cavities of the mold shown to form 8 short shots, and then start to carry out the method, such as figure 2 As shown, this method includes:

[0031] S1. Obtain the quality of each short shot formed by pouring fluid raw materials into multiple cavities of the mold, that is, obtain the quality of the short shots manufactured by using the above mold cavities F1-F8, where the short shot refers to the material The product produced when the mold is not filled (0<fill rate<98%). In order to make the calculation results of the subsequent steps more accurate, the filling rate of the short shot is preferably 75%-95%.

[0032] S2. Calculate the mass ratio of each short-shot product to its corresponding complete product, wherein the comp...

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Abstract

The invention provides a method and a device for adjusting the runner balance of a multi-cavity mold. The method comprises the following steps: acquiring the mass of each short shot product formed by the fluid raw material injected into each cavity of the mold; calculating the mass ratio between each short shot product and the corresponding finished product; calculating the difference between the maximal mass ratio and the minimal mass ratio; judging whether the difference is greater than a preset value; when the difference is greater than the preset value, calculating the average value of all the mass ratios except the maximal and the minimal mass ratios; adjusting the flow speed of the fluid raw material flowing into the cavities according to the average value. The existing method of judging the balance state through manual observation is avoided; an abstract problem is achieved by converting picture modes into data analysis.

Description

technical field [0001] The invention relates to the field of injection molding manufacturing, in particular to a method and a device for adjusting the flow channel balance of a single-mode multi-cavity mold. Background technique [0002] In the field of injection molding manufacturing, in order to improve production efficiency, a multi-cavity mold is usually used to produce medium and small plastic parts. In order to ensure that the quality indicators such as weight and performance of each mold cavity are uniform, the gating system must be balanced and analyzed to keep the flow path of the gating system balanced, that is, when the injection speed of each cavity is the same, as much as possible The cavities are filled simultaneously. If the flow path is unbalanced, the following problems may occur: the holding time is prolonged, the product molding cycle is increased, and the production efficiency is reduced; some cavities are not filled, and other cavities have been overfil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/77
Inventor 王维袁修军邹朋金可贺
Owner 合兴集团有限公司
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