Mold with heating-steering lifter mechanism for forming SMC (sheet molding compound) product

Abstract

The invention discloses a mold with a heating-steering lifter mechanism for forming an SMC (sheet molding compound) product. The mold comprises an upper mold, a lower mold and the lifter mechanism. The lifter mechanism comprises a lifter head part, a lifter rod part and a guiding assembly, wherein the lifter head part is arranged in a mold core and is in vertical sliding fit with a lower mold core, a revolving mechanism is arranged at the tail end of the lifter rod part, and the guiding assembly is used for driving a lifter to rotate when the lifter moves upwards. After the product is formed, the lifter mechanism is driven to move upwards by a lifting plate, and the lifter head part is in vertical sliding fit with the inner wall of the mold core, so that the friction force is smaller than that generated when the lifter head part is in contact with an oblique plane in the prior art, and the lifter cannot be easily clamped in a movement process and can smoothly slide; by virtue of the revolving mechanism, the lifter can be smoothly separated from the product; by combing the vertical sliding with the rotating of the lifter, the separation between the lifter and the product is realized, and the problem that the lifter is difficultly separated from the product at a high temperature in the prior art is overcome. The mold belongs to the technical field of mold devices.

Description

technical field [0001] The invention belongs to the technical field of mold equipment, and in particular relates to a mold with a heating and turning tilting mechanism for forming SMC material products. Background technique [0002] Existing SUV rear tailgates are all made of sheet metal parts, but due to the high manufacturing cost of sheet metal parts, the manufacturer uses a SMC material with the characteristics of high strength, low density, light weight, and not easy to age to replace the current one. Some sheet metal parts make the tailgate. The cavities at the left and right corners of the lower edge of the rear tailgate of the car are inclined and have undercuts. Therefore, the existing mold needs to slide obliquely to separate from the product when the core is pulled out after molding the product here. Such as figure 1 and figure 2 As shown, the inclined top is located in the core, and the surface of the inclined top and the surface of the core are sliding frict...

AI Technical Summary

Problems solved by technology

When forming smc materials, it is necessary to heat the corresponding mold, generally to about 150 degrees Celsius. The existing mold is made of steel. When the temperature reaches 150 degrees Celsius, the nature of the mold material will change to a certain extent and become soft. , the frictional force during the relative sliding between the inclined top and the core is greatly increased, and the formation of the inclined top core pulls 35mm, the inclined angle of the inclined top is 10 degrees, and the ejector plate needs to be ejected 200mm. Under such a large stroke, the inclined top The normal sliding of the device is affected, and it is very prone to slippery or stuck phenomenon

Therefore, when the existing mold is made of smc material, it cannot guarantee that the inclined roof can be separated from the product smoothly, and there is a defect of core pulling

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