Injection mold for bumper and method for controlling warpage rate of the mold
A technology for injection molds and bumpers, applied in the field of warpage control and bumper injection molds, can solve problems such as damage to automobile bumpers, inability to eject automobile bumpers at the same time, unbalanced ejection of automobile bumpers, etc. The effect of warpage rate, deformation reduction and yield improvement
Active Publication Date: 2021-09-03
CHANGZHOU INST OF MECHATRONIC TECH
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Problems solved by technology
[0010] In order to solve the problem in the prior art that the bumper cannot be pushed out at the same time because the undercut part of the bumper is bonded to the inclined roof during ejection, resulting in unbalanced bumper ejection and damage to the bumper , the present invention provides a bumper injection mold and a product warpage control method to solve the above problems
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[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "top", "bottom" etc. The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore c...
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The invention discloses a bumper injection mold and a method for controlling the warpage rate of the mold. There is a product cavity in between; the middle part of the product cavity protrudes toward the direction of the fixed mold, and an undercut part is formed on both sides, the ejector rod is suitable for lifting the product toward the direction of the fixed mold, and the inclined top is arranged symmetrically At the undercut positions on both sides of the movable mold; one end of the inclined roof is fixedly connected with the movable formwork, and the other end is suitable for reciprocating movement along the direction of the inclination angle of the edge of the undercut position. The invention can avoid the phenomenon of interference between the inclined top and the undercut when the bumper is pushed out, and effectively reduces the deformation of the product. And it can effectively solve the problem that the preset parameters of the mold flow analysis software are inconsistent with the actual injection molding parameters, improve the accuracy of the analysis, and greatly reduce the warpage rate of the product.
Description
technical field [0001] The invention relates to the technical field of mold design, in particular to a bumper injection mold and a method for controlling the warpage rate of the mold. Background technique [0002] Bumper molds have high precision and high total price. In the early stage of mold design, mold flow analysis is mostly carried out, but in the implementation process, mold design and manufacture are often not carried out according to the preset conditions of mold flow analysis (some conditions cannot be accurately transmitted) , forming the mold flow analysis only stays at the theoretical level. In order to break this situation, the mold flow analysis software preset parameters and the idea of whole-process feedback are proposed. This mold is designed to monitor the mold injection parameters throughout the process, record the original values, and compare the product size changes. In order to obtain qualified products, provide effective guarantee. In the mold tr...
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IPC IPC(8): B29C45/26B29C45/40B29C45/73B29C45/27B29C45/76B29L31/30
CPCB29C45/26B29C45/27B29C45/40B29C45/401B29C45/7312B29C45/766B29C45/7693B29C2045/7318B29C2945/76973B29C2945/76976B29L2031/3044
Inventor 黄可刘江卜凡
Owner CHANGZHOU INST OF MECHATRONIC TECH