Reasons for and solutions to the fracture of Corinthian columns


We all know that during engineering use, Gorlin columns are more prone to breakage than fully hydraulic tie rods. So why are Gorlin columns prone to breakage? In the design of Gorlin columns, because of the need to consider system rigidity, the tie rod diameter is usually relatively large. But surprisingly, such tie rods are more prone to breakage, especially in industries that produce materials with high fluidity and large forming areas, such as videotape boxes, plastic cutlery, etc. Because of their production speed requirements, frequent breakage of Gorlin columns can occur, even causing damage to the molds.

We all know that during engineering use,Collet columnsare more prone to breakage than full-hydraulic tie rods. So whyCollet columnsare they prone to breakage? In the design of collet columns, the system's rigidity must be considered, so the tie rod diameter is usually larger. But strangely, such tie rods are more prone to breakage, especially in industries producing videotapes, plastic cutlery, and other materials with high fluidity and large molding areas. Because of their high production speed requirements, this can lead to frequent breakage of the collet columns, even damaging the mold. The main causes of collet column breakage include: sudden temperature changes, instantaneous impact damage, fatigue damage, overload damage, and damage caused by compound strain.
Now that we know the causes, let's look at how to solve collet column breakage.

1. In the design, avoid abrupt changes in shaft diameter. At steps or undercuts, try using larger fillet radii transitions, select materials with better overall performance, and special treatment must be applied to address the thread surface hardness (wear resistance) issue, attempting to reduce surface stress concentration, improve surface finish, and minimize stress damage.
2. Analyze the causes of flickering in the product; do not unilaterally increase clamping force. If the mold is found to be uneven, it should be flattened. If the connecting rod length is uneven, it should be corrected, including copper pads, paper, etc., or by correcting the mold adjusting nut.
3. To ensure processing accuracy, especially the length of the connecting rod, the height of the bearing seat, the accuracy of the crosshead, and the positioning accuracy of the bearing seat on the template.
4. During assembly or after removing the mold adjusting nut, pay special attention to the length of the four tie rods, and the distance between the mold adjusting nut and the back template must be adjusted.

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