Tufting Tool Guide Jaws Orientation Mechanism
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Solution Overview
Problem
Existing tufting tools for brush making often damage the brush body due to the guide jaws striking against it during the tufting process, and require complex NC systems and separate actuators for orienting guide jaws to match the brush body's oblique surface.
Innovation Solution
A tufting tool with a reversing lever and deflecting guide that allows the guide jaws to be oriented without contact with the brush body, using a reversing lever coupled to the tool head and a deflecting guide adjustable relative to the tufting axis, enabling the guide jaws to be positioned accurately to match the brush body's inclination without a separate actuator or complex NC system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guide jaws are used to tuft brush bodies with oblique surfaces, then tufting function is achieved, but damage to the brush body occurs due to striking contact
Solution Approach 1:
The guide jaws are pre-positioned and pre-oriented to match the oblique surface angle of the brush body before contact occurs. The deflecting guide allows the guide jaws to be angled relative to the tufting axis, so that when the tool head advances, the guide jaws are already aligned with the bristle holes' orientation, preventing erratic striking and damage.
Solution Approach 2:
The guide jaws are made movable relative to each other through the reversing lever mechanism. During the advance of the tool head, one guide jaw moves forward while the other retracts, allowing dynamic adaptation to the oblique surface and ensuring both jaws maintain proper alignment without causing damage.
2Manufacturing precision
If NC systems and separate actuators are used to orient guide jaws, then precise alignment with oblique surfaces is achieved, but device complexity increases
Solution Approach 1:
The function of orienting and positioning the guide jaws is merged into the tool head structure itself through the reversing lever and deflecting guide. Instead of using separate actuators and NC systems, the orientation mechanism is integrated directly into the tufting tool, reducing overall system complexity while maintaining alignment precision.
Solution Approach 2:
The reversing lever mechanism serves multiple functions: it orients the guide jaws to match the oblique surface angle, positions the guide jaws relative to each other, and enables adaptation to different brush body geometries. This multi-functionality eliminates the need for separate NC-controlled actuators for each adjustment.
3Manufacturing precision
If guide jaws are positioned to match brush body inclination, then tufting accuracy is improved, but mechanism complexity increases without this invention
Solution Approach 1:
The guide jaw positioning mechanism is segmented into independent components: the deflecting guide for angular orientation, the reversing lever for relative positioning, and the guide jaws themselves. This segmentation allows each component to perform a specific function simply, achieving high tufting accuracy without requiring a complex integrated system.
Data Source
AI summary
A tufting tool for tufting and fastening clusters of bristles in bristle holes in a contoured surface of or oblique holes in a brush body. The tufting tool has a tool head displaceable along the tufting axis between a receiving and a tufting position. The tool head has two guide jaws which are displaceable relative to each other during displacement of the tool head. To relatively displace the guide jaws, the tool has a reversing lever connected to the tool head and a deflecting guide for the reversing lever, arranged at an angle of deflection with respect to the tufting axis. The guide jaws are coupled together via the reversing lever in such a manner and the reversing lever is guided such that an adjustment of the tool head into the tufting position advances one guide jaw in the tufting direction and retracts the other guide jaw counter to the tufting direction.