Hydroforming Piercing Device Segmented Punch Block
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Solution Overview
Problem
The existing piercing devices in hydroforming molds require significant time and effort to replace the pierce punch due to the need to disassemble the pierce cylinder from the lower steel, leading to increased man-hours and inefficiency.
Innovation Solution
A piercing device with a pierce block that includes an upper and lower block, allowing for easier assembly and disassembly of the pierce punch, where the length between the rod and the pierce punch is greater than the pierce punch itself, enabling replacement without disassembling the pierce cylinder, utilizing grooves for secure fitting and bolts for fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pierce cylinder is firmly coupled to the lower steel to ensure stable punching operation, then the stability and reliability of the punching operation is improved, but the complexity of replacing the pierce punch increases and more time is required for replacement
Solution Approach 1:
The pierce connector is divided into an upper block and a lower block that can be separated from each other. The lower block remains coupled to the rod and lower steel, while the upper block with the pierce punch can be removed independently. This segmentation allows the pierce punch to be replaced without removing the entire pierce cylinder, thus maintaining operational stability while simplifying replacement procedures.
Solution Approach 2:
The upper block containing the pierce punch is extracted as a separate removable component from the lower block. This allows the pierce punch to be taken out and replaced independently while the lower block remains firmly coupled to the lower steel, maintaining the stable connection needed for punching operations while enabling easy punch replacement.
2Ease of repair
If the pierce cylinder is disassembled to replace the pierce punch, then the replacement can be performed, but significant time and man-hours are required leading to reduced productivity
Solution Approach 1:
The pierce connector is segmented into removable upper and lower blocks, allowing the upper block with the pierce punch to be quickly separated and replaced without disassembling the entire pierce cylinder from the lower steel. This significantly reduces the time and man-hours required for punch replacement while maintaining full replaceability.
Solution Approach 2:
The upper and lower blocks are designed with pre-formed coupling surfaces and coupling holes that align automatically during assembly. This preliminary design of the coupling mechanism allows for rapid assembly and disassembly operations, reducing the time required for punch replacement while ensuring proper alignment and secure connection.
3Reliability
If the pierce connector is tightly adhered to the lower steel to prevent unstable movement, then the reliability of punching operation is improved, but the ease of replacing the pierce punch deteriorates
Solution Approach 1:
The pierce connector is divided into upper and lower blocks where only the lower block remains tightly adhered to the lower steel through the rod coupling. The upper block with the pierce punch can be independently removed without disturbing the stable connection of the lower block, thus maintaining reliability while enabling easy replacement.
Solution Approach 2:
The upper block containing the pierce punch is extracted as a separate component while the lower block remains firmly coupled to the lower steel. This extraction allows the pierce punch to be replaced without affecting the stable connection established by the lower block, combining reliability with ease of replacement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient replacement of the pierce punch by allowing disassembly of the pierce block alone, reducing the time and effort required for punch replacement and maintaining operational efficiency.
Implementation Method 1
a pierce cylinder 3 for receiving a hydraulic pressure from hydraulic piping 2
Data Source
AI summary
Disclosed is a piercing device of a hydroforming mold with a lower steel having a cavity therein, which can make the replacement of the pierce punch easier. The piercing device comprises: a pierce punch, the front edge portion of which is inserted into the cavity, for punching a hole through a molding material; a pierce cylinder for providing hydraulic pressure; a rod connected to the pierce cylinder, which is to be operated by the hydraulic pressure; and a pierce block connecting the rod and the pierce punch, wherein the length between the front edge portion of the rod and the pierce punch is greater than the length of the pierce punch.