Cover grabbing and screwing device

Abstract

The invention relates to a cover grabbing and screwing device. A connecting shaft used for lifting and moving and an ejector rod screw sleeved with an ejector rod are arranged in a cover head screwing assembly. Motion is transmitted by the connecting shaft and the ejector rod screw through a connecting screw. Holes are formed in the top face and the bottom face of the connecting screw respectively and the holes are connected with the connecting shaft and the ejector rod screw respectively. The outer wall of the connecting screw is tightly attached to the inner wall of a mandrel of a cover head screwing shell. The outer wall of the ejector rod screw is further provided with two nuts abutting against each other. A reset spring is arranged between the nut located at the lower end and a cover grabbing body. According to the cover grabbing and screwing device, the connecting strength is high, the centering accuracy is good, the production efficiency and the product quality can be improved, the production efficiency and the product quality are further improved due to the arrangement of the double nuts outside the ejector rod screw, and the grabbing force of cover grabbing fingers is made adjustable.

Description

technical field [0001] The invention relates to packaging machinery, in particular to a cap gripping and cap screwing device for packaging bottle caps. Background technique [0002] The gripping and capping device is provided with a grabbing device for grabbing the bottle cap, and a capping device that drives the grabbing device to rotate and screw the cap into the mouth of the packaging bottle. Such as figure 1 , 2 Shown in , 3 is the structural schematic diagram of existing capping and capping device, comprises capping arm assembly, the cam 101 that drives capping arm assembly lifting motion, the capping head assembly that moves with capping arm assembly and capping head assembly, The capping arm assembly includes a rotatable capping arm 102, which is driven by a cam 101 to move up and down. The capping arm 102 is equipped with an intermediate shaft 103; the capping head assembly includes a capping head housing 104 connected below the capping arm 102 , the upper end is...

AI Technical Summary

Problems solved by technology

However, during this process, the cam transmission motion needs to pass through multiple workpieces such as the intermediate shaft, connecting shaft, bolts and connecting rods before it can be finally transmitted to the ejector rod, and there is no limit or guide structure in the capping head housing to ensure its transmission process. Multi-stage transmission is easy to reduce the accuracy due to the accumulation of errors, resulting in inaccurate alignment of the capping machine, and the bottle cap cannot be screwed into the packaging bottle accurately, which affects production work and product quality; moreover, the capping machine works at a high frequency , there is no limit or guide structure in the multi-stage transmission process, resulting in low connection strength between parts, the working speed of the equipment must be reduced to ensure production safety, and this greatly affects production efficiency

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