Packaging Apparatus Film Jam Prevention via Intermittent Clamping
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Solution Overview
Problem
Conventional packaging apparatuses experience film jam issues due to adhesive films adhering to feeder portions, leading to delays and load application on drive units.
Innovation Solution
A packaging apparatus with a controller that clamps and conveys film using first and second clamp units, while the second clamp unit intermittently clamps and moves away from the first, preventing film adherence until a predetermined position, thereby preventing jam formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second clamp unit continuously clamps the film during conveyance, then the film is securely held and conveyed, but the adhesive film adheres to the feeder portion causing jam and bundle formation
Solution Approach 1:
The second clamp unit operates intermittently rather than continuously, clamping the film only at specific moments (when the second conveying unit is at specific positions) and remaining open at other times. This periodic clamping action prevents the adhesive film from continuously contacting and adhering to the feeder portion, thereby eliminating bundle formation while maintaining secure conveyance when needed
Solution Approach 2:
The clamping state of the second clamp unit is dynamically changed based on the position of the second conveying unit. The clamp unit transitions between clamped and open states according to the conveyance cycle, adapting its behavior to prevent adherence during portions of the cycle when adherence risk is high, while maintaining secure holding when conveyance precision is required
2Object-generated harmful factors
If the second conveying unit moves in the film-width direction, then the relative position between clamp units is adjusted to prevent adherence, but the conveyance timing and position precision must be controlled
Solution Approach 1:
The control system monitors the position of the second conveying unit in the film-width direction and uses this position information to determine the appropriate timing for clamping and conveyance actions. This feedback mechanism ensures that the second clamp unit operates at the correct moments to prevent adherence while maintaining precise conveyance control
Solution Approach 2:
The second conveying unit is moved in the film-width direction in advance to a predetermined position before the clamping action is executed. This preliminary positioning ensures that when the second clamp unit clamps the film, the conveying unit is already at the optimal position, preventing adherence before it can occur
Data Source
AI summary
A packaging apparatus includes a controller configured to control operation of a first conveying unit, a second conveying unit, a first moving unit, and a second moving unit. When a film is loaded onto the first conveying unit and the second conveying unit, the controller causes a first clamp unit to clamp the film delivered from a delivering unit and causes a first feeder portion to convey the film. Simultaneously, while causing a second clamp unit to be released or the second clamp unit to intermittently clamp the film delivered from the delivering unit, the controller causes a second feeder portion to convey the film and also causes the second conveying unit to move in a direction separating from the first conveying unit and, when the second conveying unit reaches a predetermined position, causes the second clamp unit to clamp the film.