Workstation at a packaging machine
AssigneeKlockner Hansel GmbH
InventorHorst E. Kaplan
Life of this patent
Estimating the term…
Abstract
A workstation at a packaging machine with a tool having an upper part (2) and a lower part (3) whereby at least one of said parts (3) is driven with a stroke-type movement and a compressive force is exerted via said tool onto a workpiece (4) in the working position, and said tool has a spring arrangement (26), the prestress and deflection path of which can be adjusted. A device (25) for measuring the compressive force on the workpiece (4) in the working position is provided and so located in the area of the upper and/or lower part (2 and/or 3) of the tool that it is loaded by the compressive force in the working position.
Claims22
A workstation of a packaging machine, in particular a thermoforming station, in which a workpiece is sealed, comprising, a tool having an upper part and lower part disposed along a common axis, drive means for moving at least one of said parts with a stroke type movement toward and away from the other of said parts for driving at least one of said parts into working and open positions along said axis and for exerting a compressive force by said tool onto the workpiece, spring means disposed upon said tool for providing said compressive force, means for adjusting the prestress and deflection path of said spring means, and means for measuring the compressive force on the workpiece and the prestress of said spring means when said lower part is in its open position.
In a thermoforming packaging machine workstation having a frame with a tool having first and second parts disposed along a common axis, and drive means for reciprocating said second part toward and away from said first part into working and open positions with respect to said first part, and between which a workpiece is compressively sealed, the improvement comprising:
- spring means for limiting the sealing force applied by said second piece against said first piece and the workpiece;
- measuring means for determining the prestress of said spring means in both the working and open position of said tool;
- and
- adjusting means for changing the resistance applied by said spring means;
- whereby said measuring means measures the resistance of said spring mean when said second part is in the working position during each work cycle, and said measuring means and said adjusting means are usable together to measure and set the prestress of said spring means.
Dependencies are inferred from the claim text.