Extrusion Mold Plate Structure for Horizontal Demolding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional extrusion molding methods face issues such as product breakage during demolding, powder jam leading to stuck punch heads and ejector pins, and prolonged operation times due to the need for sequential removal of the punch head and product.
Innovation Solution
The mold structure incorporates slopes on support plates and a mold plate, allowing for smooth demolding by horizontal movement and use of a discharge orifice, along with a push sheet to facilitate efficient product delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ejection is performed from bottom to top after extrusion, then the finished product can be removed from the mold, but the finished product is easily broken during ejection and the punch head and ejection pin become stuck due to powder jam
Solution Approach 1:
The patent inverts the conventional demolding direction from bottom-to-top ejection to horizontal demolding. The mold plate moves horizontally to eject the finished product from the discharge orifice, avoiding vertical ejection that causes product breakage and powder jamming. This inversion of the demolding direction resolves both the product integrity issue and the continuous operation capability issue.
Solution Approach 2:
The patent changes the demolding motion from vertical (one-dimensional) to horizontal movement of the mold plate. By introducing horizontal motion as the primary demolding direction, the system achieves smoother ejection without the sticking and breaking problems associated with vertical ejection, thereby improving both reliability and productivity.
2Ease of operation
If the punch head is removed first before ejection, then the finished product can be demolded, but the operating time is extended and processing costs increase
Solution Approach 1:
The patent combines the demolding function into a single horizontal movement of the mold plate, which simultaneously performs what were previously separate operations. The mold plate's horizontal motion accomplishes both the product ejection and the release of the punch head in one coordinated action, eliminating the need for sequential operations and reducing operating time.
Solution Approach 2:
The mold plate is designed with multi-functionality, serving both as the ejection mechanism and the release mechanism for the punch head. By making the mold plate perform multiple functions through its horizontal movement, the system eliminates the need for separate removal steps, thereby simplifying the demolding process and reducing operating time.
3Ease of operation
If slopes are formed on support plates and mold plate, then demolding power is decreased and operation becomes smoother, but the structural complexity increases
Solution Approach 1:
The patent applies curved surfaces in the form of slopes on the support plates and mold plate. These sloped surfaces guide the finished product smoothly during horizontal demolding, reducing friction and preventing sticking. The curvature principle is applied to create smooth transition surfaces that facilitate easy ejection without requiring complex additional mechanisms.
Data Source
AI summary
A mold structure for extrusion molding contains: a first mold assembly, a second mold assembly, a mold plate, a first guide plate set, a second guide plate set, a first support plate set, and a second support plate set. The first mold assembly includes a punch head and a cylinder connector. The second mold assembly includes a receiving chamber configured to accommodate the punch head. The mold plate includes a discharge orifice and a contact face. The first guide plate set and a second guide plate set are fixed on the mold plate and are configured to lock with the second mold assembly. The first support plate set and the second support plate set are mounted on the mold plate, and tops of the first support plate set and the second support plate set are locked with the first guide plate set and the second guide plate set.