Bag feeding mechanism

Abstract

The invention provides a bag feeding mechanism comprising a rack, a main drive mechanism installed on the rack, two rotary arms, a bag expanding part and a fine tuning mechanism. The two rotary arms turn up and down around a supporting base under the drive of the main drive mechanism; the tail ends of the two rotary arms are provided with clamping parts used for clamping bag openings of packaging bags; the bag expanding part turns up and down along with the rotary arms and is inserted in the bag openings and is used for expanding the bag openings of the packaging bags when the clamping parts clamp the packaging bags and turn upwards; the fine tuning mechanism is disposed between the rotary arms and used for driving the rotary arms to transversely move when the clamping parts clamp the bag openings of the packaging bags so as to tension the bag openings of the packaging bags; the fine tuning mechanism moves in a telescopic mode after the bag expanding part is inserted into the bag openings, the rotary arms are driven to transversely move, the two sides of the bag opening of each packaging bag are tensioned under the common action of the clamping parts and a conical blade, so that each bag opening becomes a regular rectangular opening, materials can be sleeved with the packaging bags conveniently, and accordingly bag sleeving efficiency is improved; meanwhile, a motor and a speed reducer are used for taking the place of a servo motor, and accordingly manufacturing cost of the bag feeding mechanism is lowered.

Description

technical field [0001] The invention relates to the field of material packaging equipment, in particular to a bag loading mechanism in a fully automatic packaging bagging machine. Background technique [0002] In the prior art, when the pocket opening of the packaging bag (such as a woven bag) is stretched during the bag clamping process, the packaging bag is in a natural state after the palm of the supporting bag is inserted, and the pocket opening of the packaging bag is in a natural state. The opening similar to a rectangle cannot be formed, which leads to poor bagging effect of items being placed into the packaging bag, which affects the running speed and packaging effect of the entire automatic packaging sleeve machine. On the other hand, the bag-loading mechanism in the prior art has poor adaptability to packaging bags of different sizes in the bag-stretching process; and, the 90-degree rotation movement in the current bag-loading mechanism is realized by a servo motor...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when the pocket opening of the packaging bag (such as a woven bag) is stretched during the bag clamping process, the packaging bag is in a natural state after the palm of the supporting bag is inserted, and the pocket opening of the packaging bag is in a natural state. Unable to form a rectangular opening, which leads to poor bagging effect when items are put into the packaging bag, which affects the running speed and packaging effect of the entire automatic packaging machine

On the other hand, the bag-loading mechanism in the prior art has poor adaptability to packaging bags of different sizes in the bag-stretching process; and, the 90-degree rotation movement in the current bag-loading mechanism is realized by a servo motor. Therefore cause the manufacturing cost of whole bagging mechanism to be higher

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