Upper Feed Device Electrical Control Integration
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Solution Overview
Problem
Existing upper feed devices for sewing machines lack control integration with the sewing machine, leading to inefficient operation and limited functionality in feeding work cloths.
Innovation Solution
An upper feed device is designed with a mounting portion, feed mechanism, drive portion, and connecting portion that allows electrical connection to the sewing machine's control system, enabling coordinated operation with the sewing machine's feed dog to control the feeding of work cloths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an upper feed device is mechanically connected to the sewing machine without electrical control integration, then the structure is simple and easy to manufacture, but the operational efficiency and control precision are poor
Solution Approach 1:
The patent replaces pure mechanical connection with an electromechanical control system. The control portion electrically connects to the drive portion, enabling electronic control of the feed mechanism rather than relying solely on mechanical linkages. This substitution improves operational efficiency while maintaining manageable complexity through modular design.
Solution Approach 2:
The upper feed device is designed with multi-functionality, serving both as a mechanical feed mechanism and as a controllable component integrated with the sewing machine's control system. The device can adapt to different work cloth types and feeding requirements, improving productivity without proportionally increasing complexity.
2Adaptability or versatility
If the upper feed device is designed with basic mechanical components only, then the manufacturing process is simple, but the ability to handle various types of work cloths is limited
Solution Approach 1:
The feed mechanism is designed with adjustable and dynamic components that can adapt to different work cloth types. The control portion can modify operating parameters electrically, allowing the same device to handle various materials without requiring multiple specialized mechanisms, thus improving versatility without excessive manufacturing complexity.
Solution Approach 2:
The device utilizes electrical control to change operating parameters such as feed speed, feed amount, and timing based on the type of work cloth being processed. This allows a single device structure to achieve high adaptability by dynamically adjusting parameters rather than requiring multiple fixed-configuration mechanisms.
3Ease of operation
If the upper feed device operates independently without control integration, then the mounting process is simple, but the coordinated operation with the feed dog is poor
Solution Approach 1:
The control portion receives feedback from the sewing machine's operation state and adjusts the drive portion accordingly to achieve coordinated feeding with the feed dog. This feedback mechanism ensures synchronized operation between the upper feed device and the main feeding system, improving ease of operation while managing complexity through intelligent control.
Solution Approach 2:
The upper feed device is merged with the sewing machine's control system through electrical connection. The control portion, drive portion, and feed mechanism are integrated as a unified system that operates in coordination with the feed dog, achieving seamless coordinated operation without requiring complex mechanical linkages.
Data Source
AI summary
An upper feed device includes a mounting portion, a feed mechanism, a drive portion, and a connecting portion. The mounting portion is configured to mount the upper feed device to a presser bar of a sewing machine. The feed mechanism is configured to feed a work cloth. The drive portion is configured to drive the feed mechanism. The connecting portion is configured to electrically connect the drive portion to a control portion of the sewing machine.