The “Mysterious Code” in the Injection Molding Industry: The Magical Power of the Thimble’s Size and Shape
In the hidden corners of injection molding production, there lies a set of “mysterious codes” – the size and shape of the thimble. Like invisible batons, they quietly control the success or failure of injection molding.
Size: The “Password Lock” for Precise Control
Diameter: Subtle Changes Trigger Great Upheavals
Although the diameter of the thimble is small, it can set off an “injection molding storm”. If the diameter is too small, it’s like using a toothpick to lift a huge stone. When ejecting the product, the local stress of the product is concentrated, and it is prone to deformation and cracking. For precision electronic components, the slightest deviation can turn them into waste products. If the diameter is too large, it’s like using a sledgehammer to knock fine porcelain. It not only leaves marks and damages the appearance but also disrupts the flow of the plastic melt, causing the pressure to rise, and the energy consumption and mold wear to increase dramatically.
Length: Only the Right Length Can Unlock the Process
If the length is insufficient, the product will be trapped in the mold, making demolding difficult, and both the mold and the product will be damaged. If it is too long, it’s like a clumsy person walking in a narrow alley, and it is easy to interfere with other components. At high speeds, its stability is poor, affecting the ejection effect.
Shape: The “Magic Paintbrush” for Product Molding
Round Thimble: A Conventional Choice with Limitations
The common round thimble can handle simple products with ease. However, when facing large – scale thin – walled products or products with complex structures, due to the small contact area, the ejection force is uneven, and the products are prone to deformation.
Special – shaped Thimbles: Winning by Surprise and Shaping Perfection
The flat thimble, with its large contact area, exerts force evenly and saves complex products. The thimble with an exhaust groove can discharge air, avoiding surface defects of the product and creating high – end products.
