Online overload clearance fine adjustment device for ultra-wide PC sheet forming machine

Abstract

The invention discloses an online overload clearance fine adjustment device for an ultra-wide PC sheet forming machine. The online overload clearance fine adjustment device comprises a lifting machineand a motor. One end of a shaft of the lifting machine is connected with a shaft of the motor through a worm and gear mechanism, and the other end of the shaft of the lifting machine is connected with a screw rod through a reduction gear mechanism. The stretching end of the screw rod is matched with a lifting arm in a threaded manner, a nut is arranged at the lower end of the lifting arm, and theupper end of the lifting arm is fixedly connected with a wedge block. The screw rod stretches in a guide groove extending in the axial direction in the lifting arm, and the top end of the screw rod is movably connected with a rectangular guide block. The rectangular guide block is circumferentially limited in the guide groove in a clearance fit manner, and a dovetail-shaped guide rail is arrangedon the straight face of the wedge block. The dovetail-shaped guide rail is matched with a dovetail groove formed in the linear sliding block in a sliding manner, and the linear sliding block is usedfor being fixedly installed on a bearing seat of a fixed roller of the PC sheet forming machine. The slope of the wedge block is matched with the slope of a slope sliding block in a sliding manner, the slope sliding block is used for being fixedly installed on a bearing seat of a movable roller of the PC sheet forming machine, and the lifting arm conducts lifting motion so that the distance between the linear sliding block and the slope sliding block can be adjusted.

Description

technical field [0001] The invention relates to the field of PC sheet molding, in particular to an online heavy-duty gap fine-tuning device for an ultra-wide PC sheet molding machine. Background technique [0002] As one of the five major engineering plastics, polycarbonate (referred to as PC) has developed rapidly because of its excellent comprehensive properties and outstanding physical, mechanical and thermal properties. At present, the width of the PC sheet production line is relatively small. The width of PC sheet products is usually about 1.5m. The gap adjustment of the sheet forming machine is relatively easy. Usually, the ordinary worm lift can meet the gap of the forming machine. Regulatory requirements. However, with the development, society’s demand for ultra-wide PC sheets is increasing, and the weight of the forming machine for producing ultra-wide PC sheets is greatly increased. It needs not only enough jacking force to adjust the gap size, but also a large K...

AI Technical Summary

Problems solved by technology

However, with the development, society’s demand for ultra-wide PC sheets is increasing, and the weight of the forming machine for producing ultra-wide PC sheets is greatly increased. It needs not only enough jacking force to adjust the gap size, but also a large Keep the gap unchanged under the pressure. Ordinary worm gear elevators only rely on the jacking force of the worm gear to limit the gap of the molding machine. This structure cannot bear a lot of pressure, and its volume is large, so it cannot meet the requirements of ultra-wide PC sheets. Clearance adjustment requirements

If a larger lift and motor are used to adjust the gap of the ultra-wide PC sheet forming machine, in order to meet the installation requirements of the larger lift, the gap of the forming machine must be large enough, and increasing the gap of the forming machine requires the use of a larger diameter forming machine, which will lead to a substantial increase in the manufacturing cost of ultra-wide PC sheets, and when adjusting the gap, it is usually necessary to stop the operation of the forming machine and then adjust the gap, which will not only affect the production efficiency of the factory, but also increase the cost of the forming machine. initial setup time, resulting in waste of raw materials during the initial run

In addition, if the elevator is used under high pressure for a long time, the turbine and worm of the elevator will wear out, which will affect the accuracy of the gap adjustment of the ultra-wide PC sheet forming machine

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