M-shaped packaging bag opening mechanism

Abstract

The invention discloses an M-shaped packaging bag opening mechanism, which comprises a rotary master disc, wherein the front end of the rotary master disc is rotatably provided with two corresponding swing arm spindles; the upper ends of the swing arm spindles are respectively provided with a swing arm; the front ends of the swing arms are respectively provided with a sucking disc seat; the lower ends of the swing arms are respectively provided with a gear; a rack respectively meshed with the two gears is arranged between the gears; a guide hole is arranged in the front end of the gear; a spring is installed in the guide hole; a connecting plate is arranged between the gear and the sucking disc seat; one end of the connecting plate is rotatably installed on the outer edge of the gear; the other end of the connecting plate is rotatably installed on a fixed support plate on the sucking disc seat; an idler wheel is rotatably installed in the rear end of the rack; and the idler wheel is in rolling cooperation with a swinging cam behind the idler wheel. The M-shaped packaging bag opening mechanism disclosed by the invention has the advantages of reasonable layout, small part amount, reliability in acting, stability in operation, high bag opening efficiency, pure mechanical mechanism, small travel, high operation speed, small inertial impact, convenience in regulation, high interchangeability, good adaptation on the packaging bag material and long service life.

Description

technical field [0001] The invention relates to an auxiliary mechanism on a bag-feeding packaging machine, in particular to a bag-opening mechanism for an M-shaped packaging bag. Background technique [0002] On the bag-feeding packaging machine, the bag-opening mechanism mostly uses the relative movement of the suction cup to open the bag. In the prior art, the suction cups are driven by their separate cylinders, which has a complex structure, takes up a lot of space, and has a large number of parts. The manufacturing cost is high, the bag opening efficiency is low, and the adjustment is troublesome, and its operation is not stable, especially when the M-shaped packaging bag is opened, the opening requirement of the M-shaped packaging bag cannot be guaranteed. Contents of the invention [0003] The purpose of the present invention is to make up for the deficiencies in the prior art, and provides a bag opening mechanism for M-shaped packaging bags. The cam controls the mo...

AI Technical Summary

Problems solved by technology

[0002] On the bag-feeding packaging machine, the bag-opening mechanism mostly uses the relative movement of the suction cup to open the bag. In the prior art, the suction cups are driven by their separate cylinders, which has a complex structure, takes up a lot of space, and has a large number of parts. The manufacturing cost is high, the bag opening efficiency is low, and the adjustment is troublesome, and its operation is not stable, especially when opening the M-shaped packaging bag, the opening requirements of the M-shaped packaging bag cannot be guaranteed.

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