Telescopic Arm Insert Sheet Pick-Up Device
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Solution Overview
Problem
The existing devices for grasping insert sheets in a receiving station struggle with precise positioning as the height of the stack decreases, leading to increased offset and imprecision in inserting sheets between blanks, which affects the stability and accuracy of the stacking process.
Innovation Solution
A device with a pivoting axle and telescopic arms that lengthen and shorten to maintain a consistent grasping region, allowing the suction element to move vertically between upper and lower positions, ensuring accurate positioning of the insert sheet regardless of the stack height, thus reducing bulk and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a bar of suction cups is used to grasp insert sheets, then the device is compact, but the grasping region moves away from the sheet edge as the stack height decreases, leading to positioning imprecision
Solution Approach 1:
The patent applies the dynamics principle by making the arm telescopic, allowing it to extend and retract dynamically. When the stack height decreases, the arm extends to maintain the grasping region at a consistent distance from the sheet edge, thereby preserving positioning precision while keeping the device compact when retracted.
2Adaptability or versatility
If the bar of suction cups is lowered to grasp sheets in deeper trays, then deeper stacks can be accessed, but the offset from the sheet edge increases, reducing positioning accuracy
Solution Approach 1:
The telescopic arm dynamically adjusts its length based on the tray depth and stack height. When accessing deeper trays, the arm extends to reach the sheets while maintaining the correct grasping position relative to the sheet edge, thus achieving both tray depth adaptability and positioning precision.
Solution Approach 2:
The patent changes the parameter of arm length dynamically. By adjusting the arm length according to the tray depth and stack height, the system maintains optimal grasping conditions regardless of the tray configuration, ensuring consistent positioning precision across different scenarios.
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 solution ensures correct positioning of the insert sheet, maintaining precision and stability during the insertion process without requiring significant changes in the device's bulk or vertical movement of trays, allowing continuous production without stopping.
Implementation Method 1
The grasping device comprises a suction element (20) configured to grasp an insert sheet
Data Source
AI summary
The invention relates to an insert-sheet pick-up device (13) for an insert-sheet loading device (10) of a station for receiving copy (500). The pick-up device (13) includes a suction element (20) configured to pick up an insert sheet. The pick-up device (13) includes a pivoting axis (30) and at least one telescopic arm (33) including a proximal arm (33a), one end of which is fixed to the pivoting axis (30), and a distal arm (33b), able to move with respect to the proximal arm (33a), and one end of which is pivot-articulated to the suction element (20) to move the suction element (20) between a raised position and a lowered position according to a vertical movement of the suction element (20). Also, the invention also relates to an insert-sheet loading device, a copy-receiving station and a machine for processing elements in sheet form including the insert-sheet pick-up device.