Traverse Guide Origin Detection With Endless-Belt Drop Prevention
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Solution Overview
Problem
Existing traverse devices face issues with unintentional detachment of the traverse guide from the driving belt during origin position determination, leading to complex mechanisms and increased inertial mass, which complicates maintenance and operation.
Innovation Solution
A traverse device design that includes a drop prevention portion and an origin indicating member positioned opposite to the attachment-and-detachment point, using a servo motor for precise position detection and a guide rail for stable movement, allowing easy detachment without complex mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock mechanism is provided in the traverse guide to prevent detachment, then the traverse guide can be prevented from dropping off the driving belt, but the mechanism becomes complex and the inertial mass increases
Solution Approach 1:
The function of preventing detachment is segmented from the traverse guide itself and transferred to a separate drop prevention portion on the driving belt. This segmentation allows the traverse guide to remain simple while the driving belt incorporates the protective feature, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
A drop prevention portion acts as an intermediary element between the driving belt and the traverse guide. This intermediary structure prevents direct contact between the traverse guide and potential detachment points, providing reliable prevention without modifying the traverse guide's internal mechanism, thus maintaining simplicity while ensuring reliability.
2Ease of operation
If the origin indicating member is positioned near the attachment-and-detachment position, then origin position determination is simplified, but the traverse guide may be unintentionally detached from the driving belt
Solution Approach 1:
The drop prevention portion serves as an intermediary protective element that allows the origin indicating member to be positioned conveniently near the attachment-and-detachment position for easy operation, while simultaneously preventing the harmful effect of unintentional detachment. This resolves the contradiction by adding a protective intermediary rather than compromising operational ease.
3Ease of repair
If the traverse guide is made detachable at the attachment-and-detachment position for maintenance, then ease of maintenance is improved, but the risk of accidental detachment during operation increases
Solution Approach 1:
The drop prevention portion is implemented locally at specific critical positions on the driving belt where detachment risk exists, rather than making the entire system complex. This localized approach maintains ease of maintenance by not preventing detachment entirely, while still providing protection against accidental detachment during normal operation, thus resolving the contradiction between ease of repair and reliability.
Data Source
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Figure 3(a)~3(b)
AI summary
An object of the present invention is (i) to make it possible to determine an origin position of the traverse guide and (ii) to prevent the traverse guide from dropping off from a driving belt, with a simple structure. A traverse device 30 includes a traverse guide 22, an endless belt 35, a traverse motor 32, a first regulating member 37a, and a drop prevention portion 53. The traverse motor 32 is able to change a reciprocal area where the traverse guide 22 reciprocates as long as the reciprocal area is within a movable area TRm, and to move the traverse guide 22 to an attachment-and-detachment position where the traverse guide 22 is attachable to and detachable from the endless belt 35. The first regulating member 37a is arranged to be opposite to the attachment-and-detachment position over a production area TRn in a traverse direction. The drop prevention portion 53 is configured to prevent the traverse guide 22 in contact with the first regulating member 37a from dropping off from the endless belt 35.