Bag Opening Device Motor-Driven Synchronization High-Speed
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Solution Overview
Problem
Conventional bag opening devices in form-fill-seal machines are limited by pneumatic drive controls, which cause vibrations and shaking, restricting high-speed operation and reducing the reliability and maximum working speed of the opening process.
Innovation Solution
The bag opening device employs motor-driven coupling modules with synchronizing connecting rods and cranks, along with driving levers and swinging arms, to precisely control the movement of suction cups, minimizing vibrations and enabling higher speeds by ensuring smooth transitions between open and closed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pneumatic drive controls are used to operate the suction cups, then the device structure is simple, but vibrations and shaking occur that limit maximum working speed and reduce reliability
Solution Approach 1:
The patent replaces the pneumatic drive control system with a motor-driven system. Specifically, a motor (26) drives a synchronizing mechanism (connecting rod 18 and cranks 15, 17) that controls the movement of both suction cups (5, 6) simultaneously. This mechanical substitution eliminates the vibrations and shaking inherent in pneumatic systems, enabling reliable high-speed operation at 2,400-2,750 cycles per hour.
2Ease of operation
If pneumatic cylinders or actuators are used to move the suction cups, then the device complexity is low, but precise control of driving speed in intermediate positions is limited
Solution Approach 1:
The patent introduces a synchronizing mechanism consisting of a connecting rod (18) and cranks (15, 17) as an intermediary between the motor (26) and the suction cups (5, 6). This mechanism translates rotational motor movement into synchronized reciprocating motion of both suction cups, enabling precise speed control at intermediate positions while maintaining relatively simple device architecture.
3Speed
If the suction cups move quickly to open the bag mouth, then the working speed increases, but vibrations occur that reduce process reliability
Solution Approach 1:
The motor-driven synchronizing mechanism enables periodic reciprocating motion of the suction cups with controlled acceleration and deceleration phases. The cranks and connecting rod system naturally provides smooth speed transitions during each cycle, allowing fast movement when needed while minimizing vibrations through controlled periodic action rather than sudden starts and stops.
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
This configuration allows for reliable high-speed operation of form-fill-seal machines at speeds between 2,400 and 2,750 cycles per hour, overcoming the limitations of pneumatic drive controls and enhancing the reliability and efficiency of the bag opening process.
Implementation Method 1
applying a vacuum to hold them
Data Source
AI summary
A bag opening device for a form-fill-seal machine includes two coupling modules for being coupled to each side of a bag for opening the bag. The coupling modules are movable with respect to one another between an open position and a closed position by a driving component. The driving component of the coupling modules includes a motor driving the movement of one of the coupling modules and a synchronizing connecting rod synchronizing the movement of the coupling module driven by the motor with the other coupling module. The bag opening device allows a higher form-fill-seal speed than with conventional form-fill-seal machines.