Automotive rubber bearings injection mold design

1. Automotive rubber bearings of the key parts of the product and technical requirements

Rubber products, automotive bearings, the product requirements of the correct location of the skeleton, the compact nature of the product is good, solid frame with rubber adhesive. The appearance of good quality products, while less plastic.

Size 6mm gap in the product to install and use a certain section of the Tight quantifiers, product installation and use of better performance. On the skeleton so that the hole in wall when vulcanized rubber filled with full, dense and good.

2. Die Structural Analysis

The product of mold in the the top institutions on the production of injection machine, mold covered the template, in Moban were fixed through article linked in the press, on the next bracket; core fixed mold plate in the press under the heating plate On. Die die in the state through the injection machine into the plastic injection pressure, so that the production of plastic products, while small, dense product, quality and appearance of dimensional accuracy have been fully guaranteed.

3. Mold process

Die, Die to open first half, mold covered the template in the template were to fly in the press, on the next bracket; core module and the board at the end of a fixed template with the press under the heating plate to the press together with the introduction of the top-right Out of position. Placed skeleton, the skeleton A gap through its core and bumped die on the site location; skeleton B, C, D and through its outer mold cavity position at the end of the model. Core module will be fixed by the end of the template with the board and press together under the heating plate into the press, with a pressure-mode sulfide.

Open mode, with the press die under the heat of the board declined to build a template in the template were flying open and the press in the upper and lower bracket, the core module and the board at the end of a fixed template with the press together under the decline in heating plate in place After the introduction of the right to press a top position. Top start-up device, at the end of templates mandrel to the top, so that the core products and extrusion die, remove the product. Remove mold residue on the plastic side, a top-tenths of a device, a top-board devices under pressure for a grand finale to force back at the end of the template, then work to complete a cycle.

4. Gating system design

The larger size, the need for more rubber. To this end, the gating system design is reasonable or not the product of the compact, the quality of the appearance of a greater influence. Gating system design covered in the design template, a short distance runner, 8-hole plastic injection products in the Notes client directly on the surface, the resistance of small plastic injection, rubber easily filled cavity.

Experience has shown that the hole diameter plastic injection products in the choice of ∮ 2 - ∮ 3mm more appropriate. Plastic injection hole is too small, slow into the plastic, rubber can not be filled cavity. Plastic injection hole is too large, plastic injection products in the hole more tear marks.

The compact die, reasonable, simple, crisp, safe and reliable operation, convenient and quick. Working in small labor intensity, the rate of qualified products, curing time is short. To overcome the flat-curing presses operation cumbersome, unwieldy, workers labor-intensive, low productivity shortcomings. Production efficiency and greatly increased the rate of qualified products.