1) Put two white papers, between which a carbon paper is sandwiched, onto the mid-sealing wheel and turn it one revolution, open the two white papers, the printed marks on the two white papers should be clear,; itf not, adjust the meshing position between the two wheels, check the printed marks again, until the printed marks are clear on the papers.
2) If the meshing is correct and the temperature is proper, but sealing quality is still undesirable, it needs to adjust the set screws to limit the meshing pressure of the sealing wheel, till the sealing becomes desirable.
The mid-sealing parts have been adjusted properly in the factory, so it is generally does not need to be adjusted.
4.5. End sealing mechanism (Rotary type)
1) End sealing knife seat and cutter adjustment. The cutter seat haves been adjusted, tested and inspected in a strict way and generally it does not need makeny further adjustment. In case adjustment is needed, use two white papers, between which a carbon paper is sandwiched, to test and check if the pressed marks on the paper are even and clear,. iIf they are clear, the cutter seat position is correct and no adjustment is required,; if not, adjustment to the cutter seat is required,. tTo adjust, loosen the screw M10 (do not completely take off), then adjust the crossing adjusting screw to correct the position of the cutter seat, until proper result is reached. At last, tighten the screw M10. Adjustment of the cutter seat can be carried out without heating.
The adjustment of the cutter is generally made by pacing copper sheets. The proper adjustment is that it adjust cuts off the film without making much nose. If the cutter is unable to be adjusted well, is must be replaced. Adjustment of the cutter must be carried out under heating (about 120°C).
2) Adjusting the height of the end dealing knife holder
The height of the end dealing knife holder should be adjusted according to ethe height of the packed product, so as to make the meshing center of the sealing knife aligned with the height of the center of the packed articles, as shown in diagram 4 and 5. To adjust, loosen the four screws of the side board of the cutter holder, then adjust the up-and-down adjusting screw of the end sealing (the middle screw), making the distance between the meshing position of the upper and lower sealing knives and the working plane is about a half of the height of the packed product. After adjustment, don’t forget to tight the four loosened screws before restarting the machine again.