Fixed Ramp Guide Channel Prevents Cable Tie Bounce Back
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Solution Overview
Problem
High-speed cable tie installation tools often experience 'bounce back' issues due to the limitations in reaction speed of existing guide channel mechanisms, leading to jams and reliability problems at high delivery rates.
Innovation Solution
A fixed cable tie guide channel mechanism with a biased pivotal guide surface and a fixed ramp surface, including a retaining wall, is introduced to prevent rearward movement of the cable tie head, providing a redundant guide structure that resists 'bounce back' and ensures reliable operation at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high delivery speed rates are used, then productivity is improved, but cable tie jams occur due to bounce back
Solution Approach 1:
The fixed ramp surface with retaining wall is positioned upstream in the guide channel to preemptively counteract the bounce back force before it can cause the cable tie to jam. The retaining wall engages the cable tie head early in its travel, preventing rearward movement that would lead to jams, thus resolving the contradiction between high speed productivity and feed reliability
Solution Approach 2:
The guide channel is segmented into distinct functional zones: the fixed ramp surface with retaining wall for preventing bounce back, and the biased pivotal guide surface for assisting cable tie travel. This segmentation allows each component to specialize in one function, enabling the system to maintain reliability at high speeds while preserving productivity
2Ease of operation
If biased guide members are used to assist cable tie travel, then ease of operation is improved, but reaction speed is insufficient at high dispense speeds
Solution Approach 1:
Instead of relying solely on a movable biased guide member to respond to cable tie passage, the invention inverts the approach by providing a fixed ramp surface with retaining wall that proactively engages the cable tie head before bounce back occurs. This fixed structure responds instantaneously without the reaction time delays inherent in movable biased members, resolving the contradiction between operational assistance and reaction speed
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
The improved guide channel mechanism effectively prevents cable tie jams and ensures reliable installation by engaging both top and bottom rear surfaces of the cable tie head, maintaining proper alignment and feeding efficiency even at high delivery speeds.
Implementation Method 1
the biased pivotal guide surface is biased upward to restrict the guide channel size and engage a retaining wall of the pivotal guide surface with a rear of the cable tie head
Implementation Method 2
the application of pressurized air to convey the individual cable ties from the dispenser to a hand manipulated application tool at very high rates of speed, propelling cable ties to a cable tie tool head at up to 50-80 MPH
Data Source
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AI summary
An improved cable tie installation tool (12) includes a fixed cable tie guide channel mechanism (60) that assists in retention of cable tie heads in a cable bundling position and prevents "bounce back" of the cable tie head back into the guide channel (30). The fixed guide channel mechanism is located near the distal end of the guide channel (30) and includes a ramped surface (62) and a retention wall (64) oriented substantially perpendicular to the guide channel (30). The fixed guide channel mechanism (60) is located on a side opposite a jaw assembly and may be combined with a biased retractable retainer assembly (40) located on a wall opposite the guide channel mechanism (60). The fixed guide channel mechanism (60) can serve as a primary system, a back-up to the retractable retainer assembly (40), or used in combination with the retractable retainer assembly (40). In embodiments, the guide channel mechanism (60) may form an integral part of the guide channel (30) or may be a separate insert affixed to the channel.