Manufacturing Technology Of Fixing Device For Inflatable Shaft

Most of the existing printing equipment or packaging equipment is equipped with a roll paper winding device at its rear end. The winding device is designed with a winding frame, and the winding frame is equipped with a winding shaft; large rolls of paper are printed After rewinding on the reel.

In order to closely integrate the rotation center of the roll paper with the winding shaft and ensure that the roll paper rotates evenly around the shaft during the winding process, the winding shaft usually adopts an inflatable shaft. The inflatable shaft is pressurized by high-pressure gas to make the air The tension head on the expansion shaft extends outwards to tighten the central roll of the roll paper to ensure that the roll paper and the inflatable shaft rotate on the same axis, so as to avoid unnecessary roll paper during the winding process. Shake.

There are shaft heads at both ends of the inflatable shaft, and the shaft head is installed on the rewinding frame of the rewinding device after passing through the inflatable shaft shaft head fixing device. The inflatable shaft shaft head fixing device is composed of a mounting shaft and a chuck. The chuck is composed of a chuck seat and a movable cover. The chuck seat is a semi-cylindrical shaft sleeve with a pivot pin fixed on its upper end and a movable cover. The movable semi-circular bushing has one end installed on the pivot pin, and the other end is covered on the chuck seat. The chuck is covered with a sliding sleeve, and the sliding sleeve is equipped with a locking screw. The locking screw fixes the sliding sleeve on the clamp. On the head, between the chuck seat and the movable cover, there is a shaft head mounting hole of the inflatable shaft. The shaft head of the inflatable shaft is installed on the bearing bush in the mounting hole.

The above-mentioned structure of the inflatable shaft shaft head fixing device, due to the use of bearing bushes to contact the inflatable shaft head, the friction force between each other during use is relatively large, the bearing bushes are susceptible to wear, and the gap between the inflatable shaft and the bearing bush is too large , The inflatable shaft is prone to jump when it rotates, causing the winding tension of the roll paper to be unstable, and affecting the subsequent processing quality of the product.

The content of the utility model is to solve the problem that the winding device of printing and packaging equipment in the prior art affects the quality of the winding due to the wear of the bearing bush. The utility model provides an inflatable shaft shaft head fixing device, and its implementation is as follows: inflatable shaft The shaft head fixing device consists of a mounting shaft and a chuck.

The chuck is located at one end of the mounting shaft. The chuck is composed of a chuck seat and a movable cover. The chuck seat is a semi-cylindrical shaft sleeve with a pivot pin fixed on one side of the upper end. The movable cover is a movable semicircular shaft sleeve One end is movably installed on the pivot pin, and the other end is covered on the chuck seat. A shaft head mounting hole for the inflatable shaft is formed between the chuck seat and the movable cover. The chuck is covered with a sliding sleeve, and the sliding sleeve is equipped with Sliding groove screw, the front end of the sliding groove screw is stuck in the sliding groove of the chuck, the sliding sleeve is also provided with an upper locking hole, and the movable cover is provided with a locking lower hole, and the locking screw on the sliding sleeve passes through to lock The upper hole is tightened in the lower locking hole, and in the shaft head installation hole of the inflatable shaft between the movable cover and the chuck seat, there is a groove-shaped bearing installation cavity.

The above-mentioned structure of the inflatable shaft shaft head fixing device, when in use, the rolling bearing can be fitted into the bearing installation cavity, and then the inflatable shaft shaft head can be fitted into the inner ring of the rolling bearing to reduce the shaft head and shaft head of the inflatable shaft The friction between the fixing devices. In this way, during the long-term use of the inflatable shaft, due to the small friction of the rolling bearing, the wear between the inflatable shaft head and its fixed parts is small, and the rotation stability of the inflatable shaft is improved. In the prior art, the problem of bounce that is likely to occur in the inflatable shaft is solved, and the quality of subsequent processing of the product is improved.