Eccentric Inner Core Assembly for Vibration Mixer
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Solution Overview
Problem
Existing vibration mixers for paint and color matching are inefficient for small paste buckets due to large external dimensions and high costs, and the locking mechanism in current designs is prone to machining precision issues, leading to suboptimal performance.
Innovation Solution
An inner core assembly with a motor and compression system using an eccentric structure for the rotor shaft, a guiding shaft for sliding pressure plate mounting brackets, and a cam and lock piece mechanism with triangle sawteeth for secure locking, along with a double-door structure for enhanced safety and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a universal mixer structure is used to accommodate paste buckets of all specifications below 20L, then the device can be applied to various bucket sizes, but the external dimensions become large and the area covered is large, resulting in high transportation costs for small paste buckets below 5L
Solution Approach 1:
The mixer is divided into separate functional modules: a fixed base assembly with motor and drive mechanism, and a removable inner frame assembly containing the paste bucket and mixing components. This segmentation allows the inner frame assembly to be detached and transported separately, reducing the volume and area when transporting small paste buckets while maintaining versatility for different bucket sizes.
Solution Approach 2:
The inner frame assembly is designed to be dynamically adjustable and removable. The main frame assembly can be configured to accommodate different paste bucket sizes, and the inner frame assembly can be detached when not in use or when working with small buckets, allowing the device to adapt its effective working volume to match the actual mixing requirements.
2Reliability
If a cam and lock pieces structure is used for fixing and compressing the paste bucket, then the locking mechanism can secure the pressure plate mounting bracket, but the cooperation between the lock pieces and V-shaped groove of guiding shaft is difficult to achieve with machining precision, resulting in suboptimal locking effect
Solution Approach 1:
The lock pieces are designed with an asymmetric cam mechanism that converts rotational motion into linear locking motion. The cam profile is specifically shaped to engage with a flat surface on the guiding shaft rather than a V-shaped groove, eliminating the need for high-precision V-groove machining while ensuring reliable locking through the mechanical advantage of the cam geometry.
Solution Approach 2:
Instead of having the lock pieces fit into a precisely machined V-shaped groove on the guiding shaft, the design inverts the approach: the cam mechanism on the lock piece creates a localized high point that presses against a flat surface on the guiding shaft. This inverts the complexity from the groove geometry to the cam profile, which is easier to manufacture with standard machining processes while achieving the same or better locking reliability.
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
The solution reduces structural costs, failure rates, and improves service life by enabling efficient mixing and secure operation, while the double-door structure ensures safety and ease of use.
Implementation Method 1
a rotor shaft of the vibration motor is connected to the compression assembly by using an eccentric structure, the compression assembly comprises a stage, the stage is connected to a pressure plate mounting bracket by using a guiding shaft
Implementation Method 2
a vibration reduction column is fixed at each vertex of the motor fixing plate, a vibration reduction support is fixed at an upper end of the vibration reduction column, the vibration reduction support is connected to a vibration reduction assembly
Data Source
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AI summary
An inner core assembly for a vibration mixer, comprising a motor assembly (1) and a compression assembly (2) located above the motor assembly, wherein the motor assembly comprises a vibration motor, a rotor shaft of the vibration motor is connected to the compression assembly by using an eccentric structure, the compression assembly comprises a stage, the stage is connected to a pressure plate mounting bracket by using a guiding shaft, the pressure plate mounting bracket is capable of sliding along the guiding shaft, the rotor shaft of the vibration motor rotates and drives, by using the eccentric structure, the compression assembly to perform reciprocating motion. Compared with the prior art, curved reciprocating motion of the stage is achieved through eccentric motion, which has lower structural costs, a lower failure rate, and a longer service life than a motor in the prior art.