An automatic bag opening mechanism

Abstract

The invention discloses an automatic bag feeding and opening mechanism which comprises a bag warehouse assembly, a bag fetching assembly, a bag pulling assembly, a bag opening assembly and an opening supporting assembly. The bag fetching assembly is arranged on the upper portion of the bag warehouse assembly, the bag pulling assembly is arranged on the upper portion of the bag fetching assembly, the bag opening assembly is arranged on the upper portion of the bag pulling assembly, and the opening supporting assembly is arranged at the front of the bag opening assembly; the bag warehouse assembly comprises bag bin supports and bag bins; the bag fetching assembly comprises a turnover swing arm, a bag fetching cylinder, a turnover cylinder, a bag fetching swing arm, a turnover block, a connecting rod and bag fetching suckers, and the turnover block is arranged at the front end of the bag fetching swing arm; the bag pulling assembly comprises a bag pulling bottom plate, a lifting cylinder, a clip cylinder, an upper clip and a lower clip, the lifting cylinder is arranged at the front end of the bag pulling bottom plate, and the upper clip and the lower clip are movably connected with the lifting cylinder; the bag opening assembly comprises a bag opening bottom plate, an upright column, a bag opening swing arm, an upper sucker, a bag opening cylinder and a lower sucker, and the upright column is arranged on the upper portion of the bag opening bottom plate; the opening supporting assembly comprises an opening supporting bottom plate and a guide plate, an upper clamp plate and a lower clamp plate are arranged at the front of the guide plate, the guide plate is connected with a first cylinder, and the upper clamp plate is connected with a second cylinder.

Description

technical field [0001] The invention relates to a packaging machine, in particular to an automatic bag-loading and bag-opening mechanism. Background technique [0002] In the automatic production of sanitary roll paper and soft tissue paper bag packaging machines, the bags are taken out automatically. The working principle of the current technology is to use a suction cup to suck the bag from the bag store to the conveyor belt with vacuum adsorption function, and the conveyor belt sends the sucked bag to the designated position of the bag opening mechanism, and the bag opening mechanism opens the bag for use. Bagging. [0003] There is following defective in above-mentioned technology: [0004] 1. Because the conveyor belt and the bag opening mechanism must be cross-assembled at 90 degrees horizontally, the equipment is bulky and the manufacturing cost is high. [0005] 2. There must be many small holes on the conveyor belt with vacuum adsorption function to absorb bags, ...

AI Technical Summary

Problems solved by technology

[0004] 1. Because the conveyor belt and the bag opening mechanism must be assembled horizontally at 90 degrees, resulting in large equipment volume and high manufacturing costs

[0005] 2. There must be many small holes on the conveyor belt with vacuum adsorption function to absorb bags, which determines the need for a high-power vacuum fan, and high energy consumption in the production process

[0006] 3. In the process of conveying the bag, it is easy to be misplaced by the instability of the suction force, which makes the bag opening mechanism fail to open the bag and affects the production stability; after the suction cup sucks the bag mouth, the suction cup does not turn over and tear the bag. There will be adhesion between them, causing the suction bag to not only absorb one bag, but also bring the lower bag to the conveyor belt, which will also affect the instability of production

[0007] 4. The speed of bag feeding is slow, because after the bag is sent to the working position of the bag opening mechanism, the plane of the conveyor belt is the working surface for bagging, and the bag must be loaded and pushed away from the conveyor belt before the next bag can be sent

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