Molding Machine Symmetric Mold Coupling via Linkage
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Solution Overview
Problem
Conventional molding machines with stationary and movable molds face precision issues due to the movable mold pushing the stationary mold out of its normal position during coupling, leading to imprecise container molding.
Innovation Solution
A molding machine design featuring a base unit with left and right molds, holding arms, a power supply, threaded shaft, adjusting seat, pivot plate, swing arm, and linkage units, allowing precise movement between mold-closing and mold-open states through controlled rotation of the threaded shaft and pivot mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a movable mold is used to couple with a stationary mold, then the molding machine can perform molding operations, but the stationary mold is pushed out of position by the momentum of the movable mold, reducing molding precision
Solution Approach 1:
Instead of having one stationary mold and one movable mold where the movable mold pushes the stationary mold, the invention inverts the approach by making both molds movable through holding arms. This eliminates the momentum transfer problem where one mold pushes another out of position, as both molds move symmetrically toward each other under controlled forces.
Solution Approach 2:
The invention introduces holding arms as intermediary components between the drive mechanism and the molds. These holding arms controlledly transfer the closing force, preventing direct momentum transfer that would push the stationary mold out of position. The linkage units and swing arms act as mediators to synchronize and balance the forces applied to both molds.
2Ease of operation
If the movable mold is moved to couple with the stationary mold, then molding operations can be performed, but the stationary mold cannot remain stationary relative to the movable mold, reducing positioning accuracy
Solution Approach 1:
The invention inverts the traditional stationary-movable mold configuration by making both molds movable through symmetric holding arms. This allows both molds to move equally toward each other, maintaining precise relative positioning without the stationary mold being pushed out of position by momentum forces.
Solution Approach 2:
The invention changes the operational parameters by controlling both molds to move with equal and opposite forces through the linkage mechanism. The swing arm and linkage units synchronize the movement parameters of both molds, ensuring they close symmetrically and maintain accurate relative positioning throughout the closing process.
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 precise coupling and decoupling of molds, ensuring accurate molding operations by synchronizing the movement of left and right molds with balanced forces, thus improving the precision of container molding.
Implementation Method 1
a threaded shaft rotated by the power supply, an adjusting seat mounted on the base unit, connected drivenly to the threaded shaft to move in a left-right direction relative to the threaded shaft
Implementation Method 2
The swing arm is swingable through the movement of the adjusting seat so as to swing the left and right holding arms by virtue of the left and right linkage units
Implementation Method 3
The swing arm has a first pivot portion that is connected pivotally to the second end portion of the pivot plate, and a second pivot portion that is opposite to the first pivot portion
Data Source
AI summary
A molding machine includes two holding arms mounted on a base unit, connected respectively to two molds, and operable to move the molds between a mold closing state and a mold opened state. The molding machine further includes an adjusting seat mounted on the base unit and movable relative to a threaded shaft that is rotated by a power supply, a swing arm connected pivotally to the adjusting seat, a linkage unit having opposite end parts that are connected pivotally and respectively to a pivot portion of the swing arm and one of the holding arms, and another linkage unit having opposite end parts that are connected pivotally and respectively to another pivot portion of the swing arm and the other one of the holding arms. The swing arm is swingable through the movement of the adjusting seat so as to swing the holding arms by virtue of the linkage units.