Handheld Strapping Weld Control for Variable Strap Thickness

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Solution Overview

Problem

Existing strapping devices struggle to adjust mechanical aspects and welding parameters automatically for components of varying thicknesses, leading to improper welding due to either insufficient or excessive friction, without requiring manual modifications.

Innovation Solution

A strapping device equipped with actuators, sensors, and a data processing system that detects electrical characteristics to determine component thickness and adjusts positions and welding cycles accordingly, ensuring proper friction welding without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If manual adjustments are made for components of varying thicknesses, then welding parameters can be customized, but the device requires manual intervention and is less efficient

Engineering Contradiction:
Improveautomatic adjustment of welding parametersVSAvoidcomplexity of sensing and control systems
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The sensor detects component thickness in advance before the welding cycle begins, allowing the data processing system to pre-determine and pre-configure the appropriate welding parameters. This preliminary detection and configuration eliminates the need for manual adjustments during the welding process, automating what was previously a manual task while maintaining simplicity.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If friction is increased for thicker components, then proper welding can be achieved, but excessive friction causes excessive wear on the device

Engineering Contradiction:
Improvewelding qualityVSAvoidwear on device components
Core Design Contradiction:
Manufacturing precisionVSLoss of substance

Solution Approach 1:

The system dynamically adjusts welding parameters including friction level and welding cycle duration based on the detected component thickness. For thicker components, the system increases friction and extends the welding cycle, while for thinner components, it reduces friction and shortens the cycle. This dynamic adaptation ensures optimal welding quality for each component while preventing excessive wear by avoiding unnecessarily high friction levels.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The data processing system changes multiple welding parameters simultaneously based on component thickness detection, including friction level, welding cycle time, and actuator speed. By coordinating these parameter changes, the system achieves proper welding for thicker components without applying excessive friction that would cause premature wear, thus optimizing both welding quality and device longevity.

Inventive Principle:
Principle #35Parameter changes

3Loss of substance

If friction is decreased for thinner components, then excessive wear is prevented, but insufficient friction results in under-welding

Engineering Contradiction:
Improvewear on device componentsVSAvoidwelding quality
Core Design Contradiction:
Loss of substanceVSManufacturing precision

Solution Approach 1:

The system dynamically reduces friction levels and welding cycle duration for thinner components detected by the sensor. This dynamic adjustment ensures that sufficient friction is applied to achieve proper welding of thin components without excessive friction that would cause unnecessary wear. The real-time adaptation of parameters based on detected thickness prevents both under-welding and excessive wear.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The data processing system coordinates changes in multiple parameters including friction level, welding cycle time, and actuator positioning based on the detected component thickness. For thinner components, the system decreases friction and adjusts the welding cycle to be shorter, ensuring adequate welding quality while preventing excessive wear on device components through optimized parameter selection.

Inventive Principle:
Principle #35Parameter changes

4Device complexity

If a fixed welding cycle is used for all components, then the device operation is simpler, but welding quality varies with component thickness

Engineering Contradiction:
Improvesimplicity of welding cycle controlVSAvoidconsistency of welding quality
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The sensor performs preliminary detection of component thickness before the welding cycle begins, allowing the data processing system to pre-determine the appropriate welding parameters and cycle duration. This preliminary action enables the system to automatically select the correct welding profile without requiring complex real-time adjustments during welding, thus maintaining operational simplicity while ensuring consistent welding quality across components of varying thicknesses.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from the sensor that detects component thickness to automatically adjust welding parameters. The detected thickness information feeds into the data processing system, which then selects the appropriate welding cycle and parameters. This feedback mechanism ensures consistent welding quality across different component thicknesses while keeping the control system relatively simple, as the feedback automatically drives the parameter selection without requiring complex manual intervention.

Inventive Principle:
Principle #23Feedback

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 system enables customized welding cycles for components of different thicknesses, preventing under-welding or excessive friction, thereby improving welding quality and reducing wear on the device.

Implementation Method 1

a sensor to detect an electrical characteristic of the first actuator and transmit a signal indicative of the electrical characteristic

Methodology Applied
Scientific EffectElectrical characteristic detection: Electrical Resistance

Implementation Method 2

initiate a welding cycle to friction weld the welding component

Methodology Applied
Scientific EffectFriction welding: Friction Welding

Implementation Method 3

a welding cycle to weld the welding component such that the welding cycle initiates with the grip member at the second position

Methodology Applied
Scientific EffectFriction heating: Friction

Data Source

PatentUS20250353627A1Handheld strapping device
Publication Date: 2025.11.20 SAMUEL SON & CO USA INC
  • US20250353627A1 patent drawing
  • US20250353627A1 patent drawing
  • US20250353627A1 patent drawing

AI summary

Strapping devices and methods are provided. The strapping device can include a member. The strapping device can include a first actuator coupled with the member to move the member between a first position and a second position. The strapping device can include a sensor to detect an electrical characteristic of the first actuator and to transmit a signal indicative of the electrical characteristic. The strapping device can include a data processing system. The data processing system can receive the signal and determine the member is in contact with a welding component based on the electrical characteristic. The data processing system can determine the second position of the member based on the member being in contact with the welding component. The data processing system can transmit a control signal to the first actuator and a second actuator to initiate a welding cycle with the member at the second position.