Box Making Machinery Carrying Misalignment Adjustment

Solution Overview

Problem

Existing box making machinery struggles with maintaining high-speed corrugated board carrying due to wear on feeding rolls, leading to misalignment and decreased productivity, requiring costly high-precision detectors and control equipment.

Innovation Solution

A box making machinery system that calculates and adjusts the carrying misalignment of corrugated boards using a control device with a carrying misalignment amount calculation unit and a control unit, eliminating the need for high-precision detectors by utilizing actual arrival pulses and times to adjust processing positions ahead of time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If high-precision detectors and control equipment are used to adjust processing position based on carrying position detection, then manufacturing precision is improved, but device complexity and equipment costs increase

Engineering Contradiction:

Improveprocessing position accuracyVSAvoidequipment complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-calculating the carrying misalignment amount using actual arrival pulses from the feeding rolls, and using this pre-calculated data to adjust the processing position in advance. This eliminates the need for high-precision detectors during processing, as the correction is prepared beforehand based on feeding roll characteristics and wear data.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses a simplified copying approach by replacing complex high-precision position detection systems with a calculation-based model that copies the misalignment characteristics from feeding roll data. The processing position is adjusted based on a calculated model of carrying misalignment rather than direct real-time measurement, reducing equipment complexity while maintaining precision.

Inventive Principle:

Principle #26Copying

2Manufacturing precision

If control is constantly carried out of drive motors for processing rolls to match rotational positions with processing positions, then manufacturing precision is improved, but productivity decreases due to inability to use high carrying speeds

Engineering Contradiction:

Improveprocessing position alignmentVSAvoidcarrying speed

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent applies preliminary action by pre-calculating the carrying misalignment amount using actual arrival pulses from the feeding rolls, and using this pre-calculated data to adjust the processing position in advance. This eliminates the need for high-precision detectors during processing, as the correction is prepared beforehand based on feeding roll characteristics and wear data.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses feedback from the actual arrival pulses of the feeding rolls to continuously update the carrying misalignment amount calculation. This feedback mechanism allows the system to adapt to wear and changes in feeding roll performance, maintaining processing precision without requiring constant real-time control of processing roll drive motors during high-speed operation.

Inventive Principle:

Principle #23Feedback

3Ease of operation

If feeding rolls are used to carry corrugated boards, then ease of operation is improved, but manufacturing precision deteriorates due to wear causing carrying speed reduction and misalignment

Engineering Contradiction:

Improvefeeding mechanism simplicityVSAvoidcarrying position accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent uses feedback from the actual arrival pulses of the feeding rolls to continuously update the carrying misalignment amount calculation. This feedback mechanism allows the system to adapt to wear and changes in feeding roll performance, maintaining processing precision without requiring constant real-time control of processing roll drive motors during high-speed operation.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies parameter changes by using the actual arrival pulses from feeding rolls to dynamically calculate and update the carrying misalignment amount. This allows the system to compensate for wear and changes in feeding roll characteristics by adjusting the processing position based on measured pulse data, maintaining precision while keeping the feeding mechanism simple.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11203173B2Box making machinery and method for adjusting processing position of corrugated boards

Publication Date: 2021.12.21 MITSUBISHI HEAVY IND MACHINERY SYST LTD

AI summary

A box making machinery and a corrugated board running register method, include a feeding unit, a processing apparatus which carries out processing on a corrugated board, a running register device which adjusts the processing position of the processing device in a carrying direction of the corrugated board, and a control device which controls the running register device, wherein the control device includes a carrying misalignment amount calculation unit which calculates the carrying misalignment amount of the corrugated board from the feeding unit to a preset predetermined carrying position, and a control unit which adjusts the processing position of the corrugated board to be processed next using the running register device on the basis of the carrying misalignment amount after processing of the corrugated board has finished.