Meat Grinder Cutter Pin Retaining Ring for Reverse Rotation
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Solution Overview
Problem
Existing meat grinders face challenges with difficult or impossible detachment of the cutter pin due to screw connections, which can lead to damage and limited reverse rotation capabilities, affecting the mixing and operation efficiency, especially with frozen meat.
Innovation Solution
A detachable connection between the cutter pin and auger using a retaining ring with a stop surface and matching cross-sectional shapes, allowing easy assembly and disassembly while ensuring torque transmission, and enabling reverse rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a screw connection is used to attach the cutter pin to the auger, then the cutting elements and cutter pin can be replaced, but the connection becomes difficult or impossible to loosen after prolonged use and can lead to component damage
Solution Approach 1:
The connection system is segmented into distinct functional parts: the threaded bushing in the auger, the threaded section on the cutter pin, and the retaining ring with opening. This segmentation allows the cutter pin to be easily detached by removing the retaining ring, avoiding the problem of permanently tightened screw connections while maintaining replaceability of cutting elements.
Solution Approach 2:
The retaining ring acts as an intermediary element between the threaded connection and the cutter pin. It provides a simple removal mechanism by allowing the cutter pin to be pulled out through its opening, enabling easy disassembly without applying high torques that could damage components.
2Ease of repair
If a screw connection is used to attach the cutter pin to the auger, then the cutting elements can be replaced, but reverse rotation of the screw is not possible or only possible to a limited extent
Solution Approach 1:
The connection system is divided into a threaded fixation part and a retaining ring part. The retaining ring with its opening allows the cutter pin to be freely inserted and removed, enabling reverse rotation of the auger without constraint, while the threaded parts maintain secure fixation during normal operation.
Solution Approach 2:
The connection transitions from a static threaded fastening to a dynamic system where the retaining ring can be easily positioned to allow or prevent rotation. This enables the system to adapt between fixed operation mode and reverse rotation mode as needed.
3Ease of operation
If a keyway connection or press fit is used to attach the cutter pin to the auger, then the cutter pin can be easily assembled, but the connection cannot be disassembled after prolonged use
Solution Approach 1:
The connection system separates the torque transmission function (handled by the keyed or press-fit interface between auger and cutter pin) from the retention function (handled by the retaining ring). This allows easy assembly by simply inserting the cutter pin and securing with the retaining ring, and easy disassembly by removing the retaining ring, even after prolonged use.
Solution Approach 2:
The retaining ring serves as an intermediary that provides simple retention without preventing disassembly. It allows the cutter pin to be easily inserted and removed at any time, maintaining both ease of assembly and disassembly capability throughout the service life of the connection.
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
Facilitates easy connection and disconnection of the cutter pin without damage, ensures efficient torque transfer, and allows reverse rotation, improving mixing and operation efficiency, particularly with frozen meat.
Implementation Method 1
During operation of the meat grinder, it should be ensured that the torque of the auger is transmitted to the blade shaft and thus to the blades
Implementation Method 2
A detachable connection between the cutter pin and auger using a retaining ring with a stop surface and matching cross-sectional shapes, allowing easy assembly and disassembly while ensuring torque transmission
Implementation Method 3
This allows the material from the auger to be fed into the hopper during the mixing process in the meat grinder; without this feature, the material would remain unmixed in the auger
Data Source
Figure 1
AI summary
The invention relates to a mincing machine with cutting elements and a screw conveyor (10) which is rotatably mounted in a housing and is connected to a blade pin (20). The blade pin (20) is advantageously connectable and can be easily disconnected again (Fig.1).