Multi-needle Sewing Machine Needle Bar Case Position Control
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Solution Overview
Problem
Existing multi-needle sewing machines face difficulties in easily performing operations related to the embroidery frame due to obstruction by the needle bar case, even when moving the mounting portion to a retracted position, especially considering the size and shape of the embroidery frame.
Innovation Solution
The multi-needle sewing machine incorporates a processor and memory to control mechanisms that identify the needle bar case position, set a retracted position based on this identification, and move the mounting portion accordingly, ensuring the needle bar case does not obstruct the embroidery frame operation by aligning critical components with the needle hole and adjusting the retracted position to accommodate the embroidery frame's dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mounting portion is moved to a retracted position, then the embroidery frame operation should be easier, but the needle bar case may still obstruct the operation depending on the embroidery frame size and shape
Solution Approach 1:
The needle bar case is made movable in the arrangement direction through a needle bar case movement mechanism. The control unit dynamically adjusts the needle bar case position based on the embroidery frame size and shape, allowing the system to adapt to different operating conditions and eliminate obstructions effectively.
Solution Approach 2:
The control unit receives information about the embroidery frame size and shape, then uses this feedback to determine the appropriate needle bar case position. This closed-loop control ensures the needle bar case is positioned optimally to avoid obstructing the embroidery frame operation.
2Ease of operation
If the needle bar case is moved to accommodate different embroidery frame sizes, then ease of operation improves, but the system complexity increases
Solution Approach 1:
The needle bar case movement mechanism serves multiple functions: it positions the needle bar case to accommodate different embroidery frame sizes and shapes, and also ensures proper alignment with the needle hole during sewing operations. This multi-functionality reduces the need for separate mechanisms.
Solution Approach 2:
The control unit automatically determines the appropriate needle bar case position based on the embroidery frame characteristics without requiring manual intervention. The system self-adjusts to optimize the operating conditions, reducing complexity in user interaction.
Data Source
AI summary
A multi-needle sewing machine includes a plurality of needle bars, a needle plate, a needle bar case, a needle bar drive mechanism, a needle bar case movement mechanism, a mounting portion, a frame movement mechanism, a processor, and a memory. The memory is configured to store computer-readable instructions that, when executed by the processor, instruct the processor to perform processes. The processes include identification processing of identifying a position of the needle bar case in the arrangement direction, in accordance with detection of a retraction command causing the mounting portion to be moved to a retracted position, setting processing of setting the retracted position of the mounting portion on the basis of the identified position of the needle bar case in the arrangement direction, and movement processing of controlling the frame movement mechanism to move the mounting portion to the set retracted position.