Wedge-type gap adjustment mechanism of plastic sheet calender

Abstract

The invention provides a wedge-type gap adjustment mechanism of a plastic sheet calender. A group of wedges are arranged between bearing blocks of two adjacent calender rollers; one of the group of wedges is fixed at the side face of one bearing block, can not move and serves as a fixed wedge, and a T-type guide track is processed at the bottom of the other one of the group of wedges, is arranged in a T-type guide track groove on the side face of the other bearing, can move transversely and serves as a movable wedge; when the gap between the two calender rollers is needed to be adjusted, only a screw rod supported on the T-type guide track at the bottom of the movable wedge is needed to be rotated, so that the two wedges perform transverse relative movement and the purpose of adjusting the gap between the rollers is achieved; the wedges are provided with inclined planes with smaller angels, therefore the axial movement of the screw rod ensures that the wedges generate a small amount of up-and-down movement, so that the adjustment precision of the gab between the rollers is improved, the time of the sheet thickness adjustment process is greatly shortened, the reject rate of plastic sheets during the production process is reduced, and the waste of manpower is reduced.

Description

Technical field [0001] The invention relates to a roller gap adjustment mechanism used on a plastic sheet calender, in particular, it adopts a wedge mechanism to make the adjustment work convenient and quick, saves time and effort, and can control the gap between the rollers very accurately adjustment mechanism. Background technique [0002] At present, the gap adjustment mechanism of the known plastic sheet calender is to install an adjusting screw between the bearing housings of two adjacent calender rollers, and to control the distance between the rollers by adjusting the length of the protruding part of the screw. In the process of producing sheets by plastic sheet calenders, since the distance between the hanger mold installed on the plastic extruder head and the calender rollers is very close, the distance between the calender rollers is adjusted During the gap, the operator can only stand on the side of the calender and reach between the two bearing seats to turn the...

AI Technical Summary

Problems solved by technology

[0002] At present, the gap adjustment mechanism of the known plastic sheet calender is to install an adjusting screw between the bearing housings of two adjacent calender rollers, and to control the distance between the rollers by adjusting the length of the protruding part of the screw. In the process of producing sheets by plastic sheet calenders, since the distance between the hanger mold installed on the plastic extruder head and the calender rollers is very close, the distance between the calender rollers is adjusted During the gap, the operator can only stand on the side of the calender and reach between the two bearing seats to turn the screw, which is very inconvenient to operate; in addition, because most of the plastic sheets are very small in thickness, the roller The deviation value of the barrel clearance is very small, generally only about 0.2mm, and the pitch of the adjusting screw is generally greater than 3mm, so it is difficult to control the deviation with this simple screw adjustment mechanism, either large or small, and it takes many times Adjustment, resulting in too many scraps

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