Chain gripper mechanism

Abstract

The invention relates to a chain clamping mechanism comprising two parallelly arranged double pitch gearing chains and a plurality of clamping arms, wherein, the clamping arm comprises an arm rod and two support plates connected with the arm rod, the two support plates of every clamping arm are respectively hinged to the pin spindle of one chain joint of one gearing chain, a roller provided on the support plate is positioned between two rollers on the chain joint, the clamping arms on the two gearing chains are symmetrically arranged in pairs, and the clamping devices provided on each pair of the arm rods are opposed to each other, a spring is arranged between each pair of the arm rods. In the operation that gearing chains are transmitted by chain wheels, each pair of the clamping arms has the changes of closing up and opening, through the changes, packing bags clamped by each pair of the clamping arms are able to be filled with materials, or be vacuum-pumping, be filled with nitrogen, and be sealed. The chain clamping mechanism provided by the invention has simple structure, and accurate and reliable actions, the chain clamping mechanism is arranged on a packing machine and has variety of running orbits under the transmission of the chain wheels, thereby being able to achieve the arrangement of every process that the packing machine accomplishes the operation similar to the assembly line.

Description

technical field [0001] The invention relates to a device for clamping and conveying packaging bags in a bag packaging machine, in particular to a chain clamping mechanism. Background technique [0002] At present, there is no chain clamping mechanism in bag packaging machinery. The main structure of a clamping mechanism for clamping packaging bags in existing bag packaging machines is that several clamping devices are arranged on a circular rotating disk or the outer edge of the rotating mechanism. Since the running track of the clamping mechanism can only be a circular arc, and in order to realize each working step in a packaging machine with a high degree of automation, it is often required that the clamping mechanism of the packaging bag has a variety of running tracks, such as a combination of circular arcs, straight lines and curves. Therefore, the above-mentioned existing clamping mechanism cannot meet the requirements of a packaging machine with a high degree of auto...

AI Technical Summary

Problems solved by technology

Since the running track of the clamping mechanism can only be a circular arc, and in order to realize each working step in a packaging machine with a high degree of automation, it is often required that the clamping mechanism of the packaging bag has a variety of running tracks, such as a combination of circular arcs, straight lines and curves. Therefore, the above-mentioned existing clamping mechanism cannot meet the requirements of packaging machinery with a high degree of automation and complex processes.

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